CN103628943B - The multi-functional continuous variable valve drive system of a kind of intensive style for 4 cylinder IC engines - Google Patents
The multi-functional continuous variable valve drive system of a kind of intensive style for 4 cylinder IC engines Download PDFInfo
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- CN103628943B CN103628943B CN201310448281.2A CN201310448281A CN103628943B CN 103628943 B CN103628943 B CN 103628943B CN 201310448281 A CN201310448281 A CN 201310448281A CN 103628943 B CN103628943 B CN 103628943B
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Abstract
The multi-functional continuous variable valve drive system of intensive style for 4 cylinder IC engines, belongs to internal-combustion engine variable valve actuation system field.It mainly comprises oil feeder, rotary selector, mode converter, 2/2-way valve, valve actuation device etc.The rotary selector of the present invention's design reaches only needs two oil feeders and two 2/2-way valves and can realize the changeable air valve event required by internal combustion engine drive pattern and braking mode, achieves powerful function with extremely low cost; Valve-closing process is not by the restriction of oil feeder operation phase, and the valve met required by idling for internal combustion engine and middle-low load shifts to an earlier date close event, fully reduces the oil consumption in internal-combustion engine practical application and discharge; Only need the connection object of on switch mode transducer two hydraulic fluid ports namely to may be used on naturally aspirated and turbocharged internal combustion engine, type adaptability is good, applied range; Be connected by oil pipe between various parts, be convenient to the layout of system in actual vehicle.
Description
Technical field
The present invention relates to the multi-functional continuous variable valve drive system of a kind of intensive style for 4 cylinder IC engines, belong to and can realize internal-combustion engine variable valve actuation system.
Background technique
Along with the development of World Economics, the problem of energy and environment has become the major issue affecting sustainable economic development.Internal-combustion engine is as the dynamic power machine be most widely used in the world at present, and consume a large amount of fuel oils every year, and discharge a large amount of harmful gases and particulate, combustion engine energy-saving emission reduction work is very urgent.In addition, along with the sharply increase of internal-combustion engine recoverable amount, the people's life caused because of traffic accident every year and property loss increase year by year, and vehicle safety is more and more subject to people's attention, and auxiliary braking system is classified as one of indispensable annex of vehicle by increasing country.But at present auxiliary braking system mostly to exist in running brake member easily overheated, retardation efficiency reduce too fast, stopping power controllable degree is low, braking time vehicle easy sideslip, braking system take the problems such as limited vehicle space.Changeable air valve technology, because it is improving engine performance and the potentiality in internal-combustion engine auxiliary braking, receives the extensive concern of internal-combustion engine research institution and enterprise.But there is contradiction in the current automobile-used Variabale valve actuation system changed, and these systems are generally used for internal combustion engine drive field, seldom for auxiliary braking field mostly in valve adjustments flexibility ratio and system architecture complexity, cost etc.
Consider, electrolyte type Variabale valve actuation system is the system of current most potentiality.Tradition electrolyte type system adopts common rail fuel system, and along with the increase of internal combustion (IC) engine cylinder number, single cylinder valve number and rotating speed, this system exists following two problems to be had to be solved: 1) have that common rail pipe is bulky, the problem of difficulty in arrangement; 2) quantity due to the high-speed large-flow solenoid valve used in system is too much, and the solenoid valve cost determined by current solenoid valve material and processing technology is higher, and therefore, the holistic cost of this system is higher.These problems cause the practical comparatively difficulty of traditional electrolyte type system.
For the problem of traditional electrolyte type system space difficult arrangement, occurred a kind of cam oil feeding type electricity liquid valve actuation system, this system adopts the mode of cam-plunger fuel feeding, and because it cancels common rail pipe, system space is arranged easily.But this system still exists following two problems to be had to be solved: 1) the same with traditional electrolyte type system, still there is the problem that quantity is too much, system cost is higher of solenoid valve needed for system in this system; 2) this system valve actuation adjustable extent is subject to the restriction of cam-plunger oil feeder fuel supply rate curve, exhaust valve secondary opening event cannot be realized, cannot realize by 720 degree/circulation internal-combustion engine become 360 degree/circulation gas compressor braking mode required by changeable air valve event etc., these limit the functions expanding of this system.
For the problem existing for cam oil feeding type electricity liquid valve actuation system, there is a kind of double mode whole-variable valve actuating system in recent years, this system is by using driving-braking cycle device and mode converter, decrease solenoid valve quantity, and achieve the changeable air valve event simultaneously met required by internal combustion engine drive and braking mode.But, this system still exists following two problems to be had to be solved: two five-way valves 1) used due to system need to switch when the different pressure reduction of each hydraulic fluid port, and the pressure reduction situation of change of each hydraulic fluid port is very complicated, and, along with the increase of rotating speed, require that the response time of two five-way valves is shorter, circulating rate is larger, these requirements cause two five-way valve structure complexity, and processing cost is high; 2) under internal combustion engine drive pattern, this system cannot realize closing the changeable air valve event of valve in advance in the fuel feeding stage, this by limit this system idling for internal combustion engine and in the performance improvement degree of low operating mode, and these operating modes exactly city vehicle commonly use operating mode, the oil consumption when runnability of internal-combustion engine determines vehicle actual motion to a great extent under these operating modes and emission behaviour.
Summary of the invention
The object of the invention is to: 1) reached the changeable air valve event only needing 2 2/2-way valves to realize required by internal combustion engine drive and braking mode by design cycle selector, thus realize while internal-combustion engine variable Valves Technology and auxiliary braking technology unite two into one, significantly simplied system structure, reduces system cost; 2) feature utilizing the oil outlet of the 2/2-way valve used to be connected with fuel tank, significantly reduces the complexity of the pressure reduction change of hydraulic fluid port during 2/2-way Vavle switching, simplifies the structure of 2/2-way valve, reduce processing cost; 3) more double mode whole-variable valve actuating system, native system can realize under internal combustion engine drive pattern, the changeable air valve event of valve is closed in advance within the fuel feeding stage of oil feeder, reach and improve idling for internal combustion engine and middle low-load performance further, oil consumption when namely improving vehicle actual motion and the object of emission behaviour, thus the application potential of extension system; The market acceptance level of final raising native system.
The technical solution adopted in the present invention is: the multi-functional continuous variable valve drive system of a kind of intensive style for 4 cylinder IC engines, and it mainly comprises the 1st oil feeder, the 2nd oil feeder, valve actuation device, the 1st 2/2-way valve, the 2nd 2/2-way valve, mode converter, fuel tank, oil transfer pump, oil transfer pump safety valve, the 1st one-way valve, the 2nd one-way valve and oil pipe, it also comprises rotary selector, described 1st oil feeder and the 2nd oil feeder are the cam-plunger type oil feeder of phase 180 degree of camshaft degrees, its period of rotation is 360 crank angle degrees, oil transfer pump filler opening is connected with fuel tank, oil transfer pump oil outlet is connected with fuel tank by oil transfer pump safety valve, oil transfer pump oil outlet is connected with the 1st oil feeder by the 1st one-way valve, oil transfer pump oil outlet is connected with the 2nd oil feeder by the 2nd one-way valve, 1st oil feeder, 1st 2/2-way valve filler opening is connected with rotary selector the 1st oil-feed port three, 1st 2/2-way valve oil outlet is connected with fuel tank 1, 2nd oil feeder, 2nd 2/2-way valve filler opening is connected with rotary selector the 2nd oil-feed port three, 2nd 2/2-way valve oil outlet is connected with fuel tank, rotary selector drain tap is connected with fuel tank, rotary selector the 1st drives mouth to drive oil-feed port to be connected with mode converter the 1st, rotary selector the 4th drives mouth to drive oil-feed port to be connected with mode converter the 4th, rotary selector the 2nd drives mouth to drive oil-feed port to be connected with mode converter the 2nd, rotary selector the 3rd drives mouth to drive oil-feed port to be connected with mode converter the 3rd, mode converter the 1st drives mouth, mode converter the 4th drives mouth, mode converter the 2nd drives mouth, mode converter the 3rd drive mouth respectively with 1 cylinder, 4 cylinders, 2 cylinders are connected with the valve actuation device of 3 cylinders, for to enter for row-to arrange is spontaneous intake type internal combustion engine into braking mode, rotary selector the 1st brake port is braked oil-feed port with mode converter the 1st and is connected, rotary selector the 2nd brake port is braked oil-feed port with mode converter the 2nd and is connected, or rotary selector the 1st brake port and rotary selector the 2nd brake port are not set, mode converter the 1st is braked oil-feed port and is connected with the 1st oil feeder, mode converter the 2nd is braked oil-feed port and is connected with the 2nd oil feeder, for entering for entering-to arrange turbocharging type for arranging braking mode or spontaneous intake type internal combustion engine, rotary selector the 1st brake port is braked oil-feed port with mode converter the 2nd and is connected, rotary selector the 2nd brake port is braked oil-feed port with mode converter the 1st and is connected, or rotary selector the 1st brake port and rotary selector the 2nd brake port are not set, mode converter the 1st is braked oil-feed port and is connected with the 2nd oil feeder, mode converter the 2nd is braked oil-feed port and is connected with the 1st oil feeder, it is the internal-combustion engine of the integral multiple of 4 for cylinder number, according to ignition order be separated by 180 crank angle degrees grouping, every one group, 4 cylinder is often organized and is adopted a set of above-mentioned Variabale valve actuation system.
Described rotary selector adopts three layers of nesting type structure, be followed successively by the rotary selector shell having hydraulic fluid port from outside to inside, axially grooved rotary selector axle core of slotting with rotary selector axle sleeve and the radial direction of perforate, wherein, rotary selector axle core is driven by I. C. engine crankshaft by gear or chain wheel driving mechanism, every 720 crank angle degrees rotate 1 week, rotary selector axle sleeve is fixedly nested in rotary selector enclosure, will according to internal-combustion engine firing order, along with the continuous rotation of rotary selector axle core, rotary selector the 1st drives mouth and rotary selector the 4th to drive mouth to be connected with rotary selector the 1st oil-feed port or rotary selector drain tap respectively all at intervals, rotary selector the 2nd drives mouth and rotary selector the 3rd to drive mouth, and oil-feed port reverse with rotary selector or rotary selector drain tap are connected respectively all at intervals, rotary selector the 1st brake port is connected with rotary selector the 1st oil-feed port all the time, rotary selector the 2nd brake port all the time oil-feed port reverse with rotary selector is connected, or rotary selector the 1st brake port and rotary selector the 2nd brake port are not set.
The invention has the beneficial effects as follows: (a) this intensive style for 4 cylinder IC engines multi-functional continuous variable valve drive system realize only adopting 2 oil feeders be internal-combustion engine all enter while the valve actuating mechanism of (row) valve provides hydraulic oil, realize only needing 2 2/2-way valves come controlling combustion engine all enter the valve actuating mechanism of (row) valve, more double mode whole-variable valve actuating system, the feature that native system utilizes the oil outlet of the 2/2-way valve used to be connected with fuel tank, significantly reduce the complexity of the pressure reduction change of hydraulic fluid port during 2/2-way Vavle switching, simplify the structure of solenoid valve needed for system, reduce the cost of system, improve the acceptance level in market, (b) more double mode whole-variable valve actuating system, native system can realize under internal combustion engine drive pattern, the changeable air valve event of valve is closed in advance within the fuel feeding stage of oil feeder, reach and improve idling for internal combustion engine and middle low-load performance further, oil consumption when namely improving vehicle actual motion and the object of emission behaviour, thus the application potential of extension system, c rotary selector and the mode converter of () foundation internal combustion (IC) engine cylinder number and firing order design match, the changeable air valve event required by internal combustion engine drive and braking mode can be met simultaneously, by the driving and the braking effect that regulate 2/2-way valve can change internal-combustion engine, thus realize internal-combustion engine variable Valves Technology and auxiliary braking technology to unite two into one, decrease car accessories, significantly reduce cost, d () rotary selector adopts axle core-three layers, axle sleeve-shell nested structure, and axle core-shaft room is for being rotatably assorted, be static cooperation between axle sleeve-shell, hydraulic fluid port position can need to regulate according to as installed, good manufacturability, keep in repair and change simple and convenient, cost is low, e adopt oil pipe to connect between () various parts, this arranges very favourable to system in application vehicle, f (), for different modes of braking, only need change the connecting object that 2 hydraulic fluid ports on mode converter are corresponding, the type adaptability of system to practical application is good, applied range.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the intensive multi-functional continuous variable valve drive system schematic diagram of 4 cylinder IC engines of single valve.
Fig. 2 is the intensive multi-functional continuous variable valve drive system rotary selector plan views of 4 cylinder IC engines.
Fig. 3 is the intensive multi-functional continuous variable valve drive system rotary selector left views of 4 cylinder IC engines.
Fig. 4 is the intensive multi-functional continuous variable valve drive system rotary selector plan views of 4 cylinder IC engines.
To be the intensive multi-functional continuous variable valve drive system rotary selector drain tap 10c of 4 cylinder IC engines with rotary selector the 1st drive Fig. 5 that mouth 10d's is communicated with schematic cross-section.
To be intensive multi-functional continuous variable valve drive system rotary selector the 1st oil-feed port 10b of 4 cylinder IC engines with rotary selector the 1st drive Fig. 6 that mouth 10d's is communicated with schematic cross-section.
Fig. 7 be intensive multi-functional continuous variable valve drive system rotary selector the 1st oil-feed port 10b of 4 cylinder IC engines with rotary selector the 1st brake port 10e be communicated with schematic cross-section.
To be intensive multi-functional continuous variable valve drive system rotary selector the 1st oil-feed port 10b of 4 cylinder IC engines with rotary selector the 4th drive Fig. 8 that mouth 10f's is communicated with schematic cross-section.
To be the intensive multi-functional continuous variable valve drive system rotary selector drain tap 10c of 4 cylinder IC engines with rotary selector the 4th drive Fig. 9 that mouth 10f's is communicated with schematic cross-section.
To be the intensive multi-functional continuous variable valve drive system rotary selector drain tap 10c of 4 cylinder IC engines with rotary selector the 2nd drive Figure 10 that mouth 10g's is communicated with schematic cross-section.
To be intensive multi-functional continuous variable valve drive system rotary selector the 2nd oil-feed port 10a of 4 cylinder IC engines with rotary selector the 2nd drive Figure 11 that mouth 10g's is communicated with schematic cross-section.
Figure 12 be intensive multi-functional continuous variable valve drive system rotary selector the 2nd oil-feed port 10a of 4 cylinder IC engines with rotary selector the 2nd brake port 10h be communicated with schematic cross-section.
To be intensive multi-functional continuous variable valve drive system rotary selector the 2nd oil-feed port 10a of 4 cylinder IC engines with rotary selector the 3rd drive Figure 13 that mouth 10i's is communicated with schematic cross-section.
To be the intensive multi-functional continuous variable valve drive system rotary selector drain tap 10c of 4 cylinder IC engines with rotary selector the 3rd drive Figure 14 that mouth 10i's is communicated with schematic cross-section.
Figure 15 is the intensive multi-functional continuous variable valve drive system mode converter plan views of 4 cylinder IC engines.
Figure 16 is the intensive multi-functional continuous variable valve drive system mode converter left views of 4 cylinder IC engines.
Figure 17 is the intensive multi-functional continuous variable valve drive system mode converter plan views of 4 cylinder IC engines.
Figure 18 is the intensive multi-functional continuous variable valve drive system overall schematic of 4 cylinder IC engines.
In figure: 1, fuel tank, 2, 2nd 2/2-way valve, 2a, 2nd 2/2-way valve oil outlet, 2b, 2nd 2/2-way valve filler opening, 3, 1st 2/2-way valve, 3a, 1st 2/2-way valve oil outlet, 3b, 1st 2/2-way valve filler opening, 4, oil transfer pump, 5, oil transfer pump safety valve, 6, 1st oil feeder, 7, 2nd oil feeder, 8, 1st one-way valve, 9, 2nd one-way valve, 10, rotary selector, 10a, rotary selector the 2nd oil-feed port, 10b, rotary selector the 1st oil-feed port, 10c, rotary selector drain tap, 10d, rotary selector the 1st drives mouth, 10e, rotary selector the 1st brake port, 10f, rotary selector the 4th drives mouth, 10g, rotary selector the 2nd drives mouth, 10h, rotary selector the 2nd brake port, 10i, rotary selector the 3rd drives mouth, 10j, rotary selector shell, 10k, rotary selector axle sleeve, 10s, rotary selector axle core, 11, mode converter, 11a, mode converter the 1st drives oil-feed port, 11b, mode converter the 1st brakes oil-feed port, 11c, mode converter the 4th drives oil-feed port, 11d, mode converter the 2nd drives oil-feed port, 11e, mode converter the 2nd brakes oil-feed port, 11f, mode converter the 3rd drives oil-feed port, 11g, mode converter the 1st drives mouth, 11h, mode converter the 4th drives mouth, 11i, mode converter the 2nd drives mouth, 11j, mode converter the 3rd drives mouth, 11k, mode converter shell, 11s, mode converter axle sleeve, 11m, mode converter axle core, 12, valve actuation device.
Embodiment
The present invention adopts to enter for row-to arrange is that Variabale valve actuation system into 1-2-4-3 formula naturally aspirated 4 cylinder IC engine of braking mode is illustrated, for 2/2-way valve for normally close valve is illustrated to be applied to.
Fig. 1 shows the intensive multi-functional continuous variable valve drive system schematic diagram of 4 cylinder IC engines of single valve.Due to the design feature of native system, valve actuation device 12 works and jointly to be determined by the 1st oil feeder 6 and the characteristics of motion of rotary selector 10 and the working state of mode converter 11 and the 1st 2/2-way valve 3.According to the working state of mode converter 11, valve actuation device 12 working procedure can be divided into drive pattern and braking mode, its working procedure is:
(1) drive pattern
When internal-combustion engine is in the drive pattern as power source, not drive pattern transducer 11, Holdover mode transducer the 1st drives oil-feed port 11a and mode converter the 1st to drive mouth 11g to be communicated with, mode converter the 1st brakes oil-feed port 11b and mode converter the 1st drives mouth 11g to disconnect, now, the operated within range that valve actuation device 12 can only limit in the characteristics of motion by the 1st oil feeder 6 and rotary selector 10, and regulate concrete valve Operational Limits by the working state of the 1st 2/2-way valve 3 within the scope of this, its working procedure is:
(1) valve can by the driving stage
In this stage, rotary selector the 1st oil-feed port 10b drives mouth 10d to be communicated with rotary selector the 1st by rotary selector 10, and drives mouth 10d and rotary selector drain tap 10c to disconnect rotary selector the 1st.Valve actuation oil circuit under drive pattern, namely rotary selector the 1st oil-feed port 10b, rotary selector the 1st drive mouth 10d, mode converter the 1st to drive oil-feed port 11a, mode converter the 1st to drive mouth 11g to be communicated with completely.This stage is the operation period of the fuel feeding+oil suction of the 1st oil feeder 6 from fuel feeding starting point simultaneously.Within this stage, following valve running can be realized:
(a) valve opening process: when the 1st oil feeder 6 enters the fuel feeding stage, when valve actuation unlatching timing signal does not reach, 1st 2/2-way valve 3 is energized, namely the 1st 2/2-way valve filler opening 3b is connected with the 1st 2/2-way valve oil outlet 3a, and the hydraulic oil in the 1st oil feeder 6 is got back in fuel tank 1 by the 1st 2/2-way valve 3; Under the effect of valve actuation device 12 spring, valve keeps closed condition.When valve actuation opens timing signal arrival, 1st 2/2-way valve 3 is not energized, namely the 1st 2/2-way valve filler opening 3b and the 1st 2/2-way valve oil outlet 3a disconnects, hydraulic oil in 1st oil feeder 6 enters in valve actuation device 12 by the valve actuation oil circuit under drive pattern, overcome the active force of valve actuation device 12 spring, drive valve opening.
B the oil suction of () valve is closed and is taken a seat process: when the 1st oil feeder 6 enters the oil suction stage, descending along with feeding plunger, under the effect of the 1st oil feeder 6 oil suction gentle gate driver 12 spring, hydraulic oil gets back to the 1st oil feeder 6 from valve actuation device 12 by the valve actuation oil circuit drive pattern, and the oil suction realizing valve is closed.When valve goes upward to the position of the throttle device designed in advance, up along with valve, throttle increases fast, thus limits the Extraction rate of valve actuation device 12, achieves the object of air valve drop buffering.Follow-up air valve drop process no longer repeats.
C () valve draining is closed and is taken a seat process: no matter be in fuel feeding stage or oil suction stage at the 1st oil feeder 6, when valve actuation closes timing signal arrival, 1st 2/2-way valve 3 is energized, and namely the 1st 2/2-way valve filler opening 3b is connected with the 1st 2/2-way valve oil outlet 3a.When the 1st oil feeder 6 is in the fuel feeding stage, under the effect of valve actuation device 12 spring and the 1st oil feeder 6 fuel feeding, hydraulic oil in valve actuation device 12, by being got back in fuel tank 1 by the 1st 2/2-way valve 3 together with the hydraulic oil in the 1st oil feeder 6 after the valve actuation oil circuit under drive pattern, achieves the draining closing process of valve.When the 1st oil feeder 6 is in the oil suction stage, under the effect of valve actuation device 12 spring and the 1st oil feeder 6 oil suction, hydraulic oil in valve actuation device 12 is by the valve actuation oil circuit under drive pattern, a part enters the 1st oil feeder 6, another part is got back in fuel tank 1 by the 1st 2/2-way valve 3, achieves the draining closing process of valve.
(2) valve-closing keeps the stage
In this stage, rotary selector the 1st oil-feed port 10b and rotary selector the 1st drive mouth 10d to disconnect by rotary selector 10, and drive mouth 10d to be communicated with rotary selector the 1st rotary selector drain tap 10c.Leakage passage under drive pattern, namely mode converter the 1st drives mouth 11g, mode converter the 1st to drive oil-feed port 11a, rotary selector the 1st to drive mouth 10d to be communicated with completely with rotary selector drain tap 10c.Valve actuation device 12 is connected with fuel tank 1 by the leakage passage under drive pattern, can realize the closedown of valve and close maintenance, can replace lash adjuster.
(2) braking mode
When internal-combustion engine is in the braking mode as the source of consumption, drive pattern transducer 11 moves, mode converter the 1st being braked oil-feed port 11b drives mouth 11g to be communicated with mode converter the 1st, and mode converter the 1st drives oil-feed port 11a and mode converter the 1st to drive mouth 11g to disconnect.Because rotary selector the 1st oil-feed port 10b is connected with rotary selector the 1st brake port 10e all the time, namely the valve actuation oil circuit under braking mode, namely rotary selector the 1st oil-feed port 10b, rotary selector the 1st brake port 10e, mode converter the 1st braking oil-feed port 11b, mode converter the 1st drive mouth 11g to be communicated with completely all the time, therefore, the operating range of valve actuation device 12 only limits by the characteristics of motion of the 1st oil feeder 6, and regulates concrete valve Operational Limits by the working state of the 1st 2/2-way valve 3 within the scope of this.Except driving oil circuit difference, its working procedure can be the same by the working procedure in the stage of driving with valve under drive pattern, no longer repeats herein.
Within a rotary selector operation period, drive pattern has 1 valve can by the driving stage, and braking mode has 2 valves and by the driving stage, therefore, can realize the changeable air valve event required by braking mode of 360 degree/circulation.
Fig. 2-4 is 4 cylinder IC engines intensive multi-functional continuous variable valve drive system rotary selector plan view, left view and plan views respectively, and Fig. 5-14 is cross-sectional views of each oil duct of the intensive multi-functional continuous variable valve drive system rotary selector plan view of 4 cylinder IC engines.According to the internal-combustion engine under driving and braking mode, valve is opened and closed to the requirement of event, the connected relation of the relative crank angle of the valve actuation device of the 1st oil feeder 6, the 2nd oil feeder 7, each cylinder, fuel tank 1 can be drawn, in table 1.It is worth noting that table 1 is not for considering the rough connected relation of concrete internal-combustion engine practical operation situation, in actual applications, should be revised according to data in the actual requirement his-and-hers watches of internal-combustion engine.
The connected relation of the relative crank angle of table 1 the 1st oil feeder 6, the 2nd oil feeder 7, valve actuation device, fuel tank 1
According to the connected relation of parts each in table 1, rotary selector 10 adopts three layers of nesting type structure, is followed successively by the rotary selector shell 10j having hydraulic fluid port, the axially grooved and rotary selector axle sleeve 10k of perforate and the rotary selector axle core 10s of radial fluting from outside to inside.Wherein, rotary selector axle core 10s is driven by I. C. engine crankshaft by gear or chain wheel driving mechanism, and every 720 crank angle degrees rotate 1 week; It is inner that rotary selector axle sleeve 10k is fixedly nested in rotary selector shell 10j; Will according to internal-combustion engine firing order, along with the continuous rotation of rotary selector axle core 10s, each hydraulic fluid port on rotary selector shell 10j carries out being communicated with or disconnecting according to the requirement of table 1 with hole with the groove that rotary selector axle sleeve 10k axially opens by the groove utilizing rotary selector axle core 10s radial direction to open.Each hydraulic fluid port on rotary selector 10 is as shown in table 2 relative to the connected relation of crank angle, and the connected relation of relative cycle selector corner is as shown in table 3.
The connected relation of the relative crank angle of each hydraulic fluid port on table 2 rotary selector 10
The connected relation relative cycle selector corner of each hydraulic fluid port on table 3 rotary selector 10
Because rotary selector the 1st brake port 10e is connected all the time with rotary selector the 1st oil-feed port 10b, rotary selector the 2nd brake port 10h is connected all the time with rotary selector the 2nd oil-feed port 10a, therefore, rotary selector the 1st brake port 10e and rotary selector the 2nd brake port 10h also can not be set.For to enter for row-to arrange is spontaneous intake type internal combustion engine into braking mode, rotary selector the 1st brake port 10e brakes oil-feed port 11b with mode converter the 1st and is connected, rotary selector the 2nd brake port 10h brakes oil-feed port 11e with mode converter the 2nd and is connected, or rotary selector the 1st brake port 10e and rotary selector the 2nd brake port 10h is not set, mode converter the 1st is braked oil-feed port 11b and is connected with the 1st oil feeder 6, and mode converter the 2nd is braked oil-feed port 11e and is connected with the 2nd oil feeder 7.For entering for entering-to arrange turbocharging type for arranging braking mode or spontaneous intake type internal combustion engine, rotary selector the 1st brake port 10e brakes oil-feed port 11e with mode converter the 2nd and is connected, rotary selector the 2nd brake port 10h brakes oil-feed port 11b with mode converter the 1st and is connected, or rotary selector the 1st brake port 10e and rotary selector the 2nd brake port 10h is not set, mode converter the 1st is braked oil-feed port 11b and is connected with the 2nd oil feeder 7, and mode converter the 2nd is braked oil-feed port 11e and is connected with the 1st oil feeder 6.Wherein, adopt with enter for row-with arrange be into the spontaneous intake type internal combustion engine of braking mode when needs are braked, valve actuation system opens intake valve near top dead center, is discharged by the pressurized gas in cylinder along intake duct, and during to reduce descent of piston, pressurized gas does work to piston; Open exhaust valve at lower, air is sucked cylinder from air outlet flue, the negative work of piston compression gas during to increase piston stroking upward.Adopt entering for entering-to arrange turbocharging type for arranging braking mode or spontaneous intake type internal combustion engine when needs are braked, valve actuation system opens exhaust valve near top dead center, discharged along air outlet flue by pressurized gas in cylinder, during to reduce descent of piston, pressurized gas does work to piston; Open intake valve at lower, air is sucked cylinder from intake duct, the negative work of piston compression gas during to increase piston stroking upward.
Figure 15-17 is 4 cylinder IC engines intensive multi-functional continuous variable valve drive system mode converter plan view, left view and plan views respectively.According to the requirement of table 1, can obtain in different modes, the connected relation of each hydraulic fluid port on mode converter 11, as shown in table 4.
The connected relation of the relative crank angle of each hydraulic fluid port on table 4 mode converter 11
And then consider the requirement of the aspect such as manufacturability, installation, mode converter 11 adopts three layers of nesting type structure, be followed successively by the mode converter axle core 11m of radial fluting from inside to outside, the axially grooved and mode converter axle sleeve 11s of perforate and the mode converter shell 11k with hydraulic fluid port.When internal-combustion engine is under drive pattern, not drive pattern transducer 11, mode converter 11 is in the state of Figure 15-17, now, mode converter the 1st drives mouth 11g, mode converter the 4th drives mouth 11h, mode converter the 2nd drives mouth 11i, mode converter the 3rd drives mouth 11j to drive oil-feed port 11a with mode converter the 1st respectively, mode converter the 4th drives oil-feed port 11c, mode converter the 2nd drives oil-feed port 11d, mode converter the 3rd drives oil-feed port 11f to be connected, mode converter the 1st brakes oil-feed port 11b and mode converter the 2nd braking oil-feed port 11e is all blocked, meet the requirement of internal combustion engine drive pattern, when internal-combustion engine is under braking mode, drive pattern transducer 11 makes mode converter axle core 11m turn over several angle, this example is for turn over 90 degree clockwise, now, mode converter the 1st driving mouth 11g and mode converter the 4th driving mouth 11h all brakes oil-feed port 11b with mode converter the 1st and is connected, mode converter the 2nd driving mouth 11i and mode converter the 3rd driving mouth 11j all brakes oil-feed port 11e with mode converter the 2nd and is connected, mode converter the 1st drives oil-feed port 11a, mode converter the 4th drives oil-feed port 11c, mode converter the 2nd drives oil-feed port 11d, mode converter the 3rd drives oil-feed port 11f all blocked, meet the requirement of internal-combustion engine braking mode.
It should be noted that in this example, rotary selector 10 and mode converter 11 all adopt three layers of nested structure to have obtained manufacturability, reduce the quantity of oil pipe, improve level of integrated system.Further, the concrete structure such as the two structure and hydraulic fluid port position all requires to carry out adjusting the layout of adaptive system in application vehicle according to as installed.
Figure 18 shows the intensive multi-functional continuous variable valve drive system overall schematic of 4 cylinder IC engines, and it mainly comprises the 1st oil feeder 6, the 2nd oil feeder 7, valve actuation device 12, the 1st 2/2-way valve 3, the 2nd 2/2-way valve 2, rotary selector 10, fuel tank 1, oil transfer pump 4, oil transfer pump safety valve 5, the 1st one-way valve 8, the 2nd one-way valve 9 and oil pipe, it also comprises mode converter 11, described 1st oil feeder 6 and the 2nd oil feeder 7 are the cam-plunger type oil feeder of phase 180 degree of camshaft degrees, its period of rotation is 360 crank angle degrees, oil transfer pump 4 filler opening is connected with fuel tank 1, oil transfer pump 4 oil outlet is connected with fuel tank 1 by oil transfer pump safety valve 5, oil transfer pump 4 oil outlet is connected with the 1st oil feeder 6 by the 1st one-way valve 8, oil transfer pump 4 oil outlet is connected with the 2nd oil feeder 7 by the 2nd one-way valve 9, 1st oil feeder 6, 1st 2/2-way valve filler opening 3b is connected with rotary selector the 1st oil-feed port 10b three, 1st 2/2-way valve oil outlet 3a is connected with fuel tank 1, 2nd oil feeder 7, 2nd 2/2-way valve filler opening 2b is connected with rotary selector the 2nd oil-feed port 10a three, 2nd 2/2-way valve oil outlet 2a is connected with fuel tank 1, rotary selector drain tap 10c is connected with fuel tank 1, rotary selector the 1st drives mouth 10d to drive oil-feed port 11a to be connected with mode converter the 1st, rotary selector the 4th drives mouth 10f to drive oil-feed port 11c to be connected with mode converter the 4th, rotary selector the 2nd drives mouth 10g to drive oil-feed port 11d to be connected with mode converter the 2nd, rotary selector the 3rd drives mouth 10i to drive oil-feed port 11f to be connected with mode converter the 3rd, mode converter the 1st drives mouth 11g, mode converter the 4th drives mouth 11h, mode converter the 2nd drives mouth 11i, mode converter the 3rd drive mouth 11j respectively with 1 cylinder, 4 cylinders, 2 cylinders are connected with the valve actuation device of 3 cylinders, for to enter for row-to arrange is spontaneous intake type internal combustion engine into braking mode, rotary selector the 1st brake port 10e brakes oil-feed port 11b with mode converter the 1st and is connected, rotary selector the 2nd brake port 10h brakes oil-feed port 11e with mode converter the 2nd and is connected, or rotary selector the 1st brake port 10e and rotary selector the 2nd brake port 10h is not set, mode converter the 1st is braked oil-feed port 11b and is directly connected with the 1st oil feeder 6, mode converter the 2nd is braked oil-feed port 11e and is connected with the 2nd oil feeder 7, for entering for entering-to arrange turbocharging type for arranging braking mode or spontaneous intake type internal combustion engine, rotary selector the 1st brake port 10e brakes oil-feed port 11e with mode converter the 2nd and is connected, rotary selector the 2nd brake port 10h brakes oil-feed port 11b with mode converter the 1st and is connected, or rotary selector the 1st brake port 10e and rotary selector the 2nd brake port 10h is not set, mode converter the 1st is braked oil-feed port 11b and is directly connected with the 2nd oil feeder 7, mode converter the 2nd is braked oil-feed port 11e and is connected with the 1st oil feeder 6.Be the internal-combustion engine of the integral multiple (X doubly) of 4 for cylinder number, to be separated by 180 crank angle degrees groupings according to ignition order, every one group, 4 cylinder, is divided into X group, and often group adopts a set of above-mentioned Variabale valve actuation system.
To adopt entering for row-to arrange is 1-2-4-3 formula naturally aspirated 4 cylinder IC engine into braking mode, in the drive mode, rotary selector 10 makes the 1st oil feeder 6 be the valve actuation device fuel feeding of 1 cylinder and 4 cylinders at intervals, and the 1st 2/2-way valve 3 controls the concrete keying parameter of the valve actuation device of 1 cylinder and 4 cylinders at intervals; 2nd oil feeder 7 is the valve actuation device fuel feeding of 2 cylinders and 3 cylinders at intervals, and the 2nd 2/2-way valve 2 controls the concrete keying parameter of the valve actuation device of 2 cylinders and 3 cylinders at intervals.At 720 crank angle degrees, namely in rotary selector 10 operation period, open and close valve according to the order of 1 cylinder-2 cylinder-4 cylinder-3 cylinder, meet the requirement of drive pattern.In the braking mode, valve actuation device is divided into 2 groups: 1 cylinder and 4 cylinders by mode converter 11,2 cylinders and 3 cylinders.1st oil feeder 6 is the valve actuation device fuel feeding of 1 cylinder and 4 cylinders simultaneously, and the 1st 2/2-way valve 3 controls the concrete keying parameter of the valve actuation device of 1 cylinder and 4 cylinders simultaneously; 2nd oil feeder 7 is the valve actuation device fuel feeding of 2 cylinders and 3 cylinders simultaneously, and the 2nd 2/2-way valve 2 controls the concrete keying parameter of the valve actuation device of 2 cylinders and 3 cylinders simultaneously.At 720 crank angle degrees, namely in rotary selector 10 operation period, open and close valve according to the order of 1 cylinder+4 cylinder-2 cylinder+3 cylinder-1 cylinder+4 cylinder-2 cylinder+3 cylinder, meet the requirement of braking mode.
Claims (2)
1., for the multi-functional continuous variable valve drive system of intensive style of 4 cylinder IC engines, it mainly comprises the 1st oil feeder (6), the 2nd oil feeder (7), valve actuation device (12), the 1st 2/2-way valve (3), the 2nd 2/2-way valve (2), mode converter (11), fuel tank (1), oil transfer pump (4), oil transfer pump safety valve (5), the 1st one-way valve (8), the 2nd one-way valve (9) and oil pipe, it is characterized in that: further comprising rotary selector (10), cam-plunger type oil feeder that described 1st oil feeder (6) and the 2nd oil feeder (7) are phase 180 degree of camshaft degrees, its period of rotation is 360 crank angle degrees, oil transfer pump (4) filler opening is connected with fuel tank (1), oil transfer pump (4) oil outlet is connected with fuel tank (1) by oil transfer pump safety valve (5), oil transfer pump (4) oil outlet is connected with the 1st oil feeder (6) by the 1st one-way valve (8), oil transfer pump (4) oil outlet is connected with the 2nd oil feeder (7) by the 2nd one-way valve (9), 1st oil feeder (6), 1st 2/2-way valve filler opening (3b) is connected with rotary selector the 1st oil-feed port (10b) three, 1st 2/2-way valve oil outlet (3a) is connected with fuel tank (1), 2nd oil feeder (7), 2nd 2/2-way valve filler opening (2b) is connected with rotary selector the 2nd oil-feed port (10a) three, 2nd 2/2-way valve oil outlet (2a) is connected with fuel tank (1), rotary selector drain tap (10c) is connected with fuel tank (1), rotary selector the 1st drives mouth (10d) to drive oil-feed port (11a) to be connected with mode converter the 1st, rotary selector the 4th drives mouth (10f) to drive oil-feed port (11c) to be connected with mode converter the 4th, rotary selector the 2nd drives mouth (10g) to drive oil-feed port (11d) to be connected with mode converter the 2nd, rotary selector the 3rd drives mouth (10i) to drive oil-feed port (11f) to be connected with mode converter the 3rd, mode converter the 1st drives mouth (11g), mode converter the 4th drives mouth (11h), mode converter the 2nd drives mouth (11i), mode converter the 3rd drive mouth (11j) respectively with 1 cylinder, 4 cylinders, 2 cylinders are connected with the valve actuation device of 3 cylinders, for to enter for row-to arrange is spontaneous intake type internal combustion engine into braking mode, rotary selector the 1st brake port (10e) and mode converter the 1st are braked oil-feed port (11b) and are connected, rotary selector the 2nd brake port (10h) and mode converter the 2nd are braked oil-feed port (11e) and are connected, or rotary selector the 1st brake port (10e) and rotary selector the 2nd brake port (10h) are not set, mode converter the 1st is braked oil-feed port (11b) and is connected with the 1st oil feeder (6), mode converter the 2nd is braked oil-feed port (11e) and is connected with the 2nd oil feeder (7), for entering for entering-to arrange turbocharging type for arranging braking mode or spontaneous intake type internal combustion engine, rotary selector the 1st brake port (10e) and mode converter the 2nd are braked oil-feed port (11e) and are connected, rotary selector the 2nd brake port (10h) and mode converter the 1st are braked oil-feed port (11b) and are connected, or rotary selector the 1st brake port (10e) and rotary selector the 2nd brake port (10h) are not set, mode converter the 1st is braked oil-feed port (11b) and is connected with the 2nd oil feeder (7), mode converter the 2nd is braked oil-feed port (11e) and is connected with the 1st oil feeder (6).
2. the multi-functional continuous variable valve drive system of a kind of intensive style for 4 cylinder IC engines according to claim 1, it is characterized in that: described rotary selector (10) adopts three layers of nesting type structure, be followed successively by the rotary selector shell (10j) having hydraulic fluid port from outside to inside, axially grooved rotary selector axle core (10s) of slotting with rotary selector axle sleeve (10k) and the radial direction of perforate, wherein, rotary selector axle core (10s) is driven by I. C. engine crankshaft by gear or chain wheel driving mechanism, every 720 crank angle degrees rotate 1 week, it is inner that rotary selector axle sleeve (10k) is fixedly nested in rotary selector shell (10j), will according to internal-combustion engine firing order, along with the continuous rotation of rotary selector axle core (10s), rotary selector the 1st drives mouth (10d) and rotary selector the 4th to drive mouth (10f) to be connected with rotary selector the 1st oil-feed port (10b) or rotary selector drain tap (10c) respectively all at intervals, rotary selector the 2nd drives mouth (10g) and rotary selector the 3rd to drive mouth (10i) to be connected with rotary selector the 2nd oil-feed port (10a) or rotary selector drain tap (10c) respectively all at intervals, rotary selector the 1st brake port (10e) is connected with rotary selector the 1st oil-feed port (10b) all the time, rotary selector the 2nd brake port (10h) is connected with rotary selector the 2nd oil-feed port (10a) all the time, or rotary selector the 1st brake port (10e) and rotary selector the 2nd brake port (10h) are not set.
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| CN105386810A (en) * | 2015-12-31 | 2016-03-09 | 潍柴动力股份有限公司 | Motor brake system |
| CN106762012B (en) * | 2016-12-13 | 2019-04-09 | 大连理工大学 | A kind of compact locking-type multi-mode Variabale valve actuation system |
| CN106948895A (en) * | 2016-12-13 | 2017-07-14 | 大连理工大学 | A kind of locking-type multi-mode Variabale valve actuation system |
| CN107035459B (en) * | 2016-12-13 | 2019-04-09 | 大连理工大学 | A kind of locking-type multi-mode four-bar Variabale valve actuation system |
| CN109751100A (en) * | 2019-02-13 | 2019-05-14 | 大连理工大学 | A kind of full hydraulic variable continuous variable valve driving mechanism |
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| US5839453A (en) * | 1995-08-08 | 1998-11-24 | Diesel Engine Retarders, Inc. | Internal combustion engines with combined cam and electro-hydraulic engine valve control |
| CN201133265Y (en) * | 2007-12-26 | 2008-10-15 | 奇瑞汽车股份有限公司 | Engine air valve controlling mechanism |
| CN101936198A (en) * | 2010-08-06 | 2011-01-05 | 大连理工大学 | Cam oil-supply type electro-hydraulic valve driving system |
| CN102444440A (en) * | 2011-12-19 | 2012-05-09 | 宜兴大隆动力科技有限公司 | Double-mode type full-variable valve driving system for four-cylinder internal combustion engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7287497B2 (en) * | 2005-04-22 | 2007-10-30 | Gm Global Technology Operations, Inc. | Engine valve actuation system and method |
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|---|---|---|---|---|
| US5839453A (en) * | 1995-08-08 | 1998-11-24 | Diesel Engine Retarders, Inc. | Internal combustion engines with combined cam and electro-hydraulic engine valve control |
| CN201133265Y (en) * | 2007-12-26 | 2008-10-15 | 奇瑞汽车股份有限公司 | Engine air valve controlling mechanism |
| CN101936198A (en) * | 2010-08-06 | 2011-01-05 | 大连理工大学 | Cam oil-supply type electro-hydraulic valve driving system |
| CN102444440A (en) * | 2011-12-19 | 2012-05-09 | 宜兴大隆动力科技有限公司 | Double-mode type full-variable valve driving system for four-cylinder internal combustion engine |
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