CA2385717A1 - Speed-difference-dependent hydraulic clutch with control valves - Google Patents

Speed-difference-dependent hydraulic clutch with control valves Download PDF

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Publication number
CA2385717A1
CA2385717A1 CA002385717A CA2385717A CA2385717A1 CA 2385717 A1 CA2385717 A1 CA 2385717A1 CA 002385717 A CA002385717 A CA 002385717A CA 2385717 A CA2385717 A CA 2385717A CA 2385717 A1 CA2385717 A1 CA 2385717A1
Authority
CA
Canada
Prior art keywords
speed
difference
hydraulic clutch
control valve
clutch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002385717A
Other languages
French (fr)
Other versions
CA2385717C (en
Inventor
Franz Gratzer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Steyr Daimler Puch Spezialfahrzeug AG and Co KG
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2385717A1 publication Critical patent/CA2385717A1/en
Application granted granted Critical
Publication of CA2385717C publication Critical patent/CA2385717C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/06—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch
    • F16D25/062—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces
    • F16D25/063—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially
    • F16D25/0635—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs
    • F16D25/0638—Fluid-actuated clutches in which the fluid actuates a piston incorporated in, i.e. rotating with the clutch the clutch having friction surfaces with clutch members exclusively moving axially with flat friction surfaces, e.g. discs with more than two discs, e.g. multiple lamellae
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00—Automatic clutches
    • F16D43/28—Automatic clutches actuated by fluid pressure
    • F16D43/284—Automatic clutches actuated by fluid pressure controlled by angular speed

Abstract

A speed-difference-dependent hydraulic clutch comprises a drive housing (27), which rotates in a housing (25) that is fixed in space and forms a reservoir, a hydrostatic displacement machine (35), an output shaft (30), a friction clutch (36) and a piston (5) for acting on the friction clutch (36), a pressure being produced in a pressure chamber (4) when a difference occurs between the speed of the drive housing (27) and that of the output shaft (30), this pressure giving rise to action upon the friction clutch (36).
To achieve rapid control and adaptation of the characteristic, the first and the second opening (9, 10) are each connected to the reservoir (8), via a first and second rotary input (13, 14) and a first and second controllable control valve (15, 16) respectively, said valves being fixed to the housing, the first and second control valve (15, 16) being designed as controllable throttles, with the result that a control action takes place both at the respective supply side and at the discharge side of the displacement machine, irrespective of the direction of the differential speed.

Claims (9)

1. A speed-difference-dependent hydraulic clutch, comprising a drive housing (27), which rotates in a housing (25) that is fixed in space and forms a reservoir for a working fluid, a hydrostatic displacement machine (35), which is accommodated in said drive housing, an output shaft (30), a friction clutch (36) for connecting the output shaft (30) to the drive housing (27) and a piston (5) for acting on the friction clutch (36), a pressure being produced in a pressure chamber (4) when a difference occurs between the speed of the drive housing (27) and that of the output shaft (30), this pressure giving rise to action upon the friction clutch (36), and the hydrostatic displacement machine (35) having a first (9) and a second (10) opening (9, 10) for the supply and discharge of working medium and a third (11) and fourth (12) opening (11, 12) for connection to the pressure chamber (4), wherein the first and the second opening (9, 10) are each connected in terms of flow to the reservoir (8), via a first and second rotary input (13, 14) and a first and second control valve (15, 16) respectively, said valves being fixed to the housing, the first and second control valve (15, 16) being designed as controllable throttle valves, with the result that a control action takes place both at the respective supply side and at the discharge side of the displacement machine, irrespective of the direction of the differential speed.
2. The speed-difference-dependent hydraulic clutch as claimed in claim 1, wherein the first and the second control valve (15, 16) form a common control valve (20).
3. The speed-difference-dependent hydraulic clutch as claimed in claim 1, wherein the first and the second control valve (15, 16) are proportional valves.
4. The speed-difference-dependent hydraulic clutch as claimed in claim 1, wherein the first and second control valve (15, 16; 20) are activated by a stepping motor (21).
5. The speed-difference-dependent hydraulic clutch as claimed in claim 1, wherein a double-acting nonreturn valve (22) is provided between the third and fourth opening (11,12) and the pressure chamber (4).
6. The speed-difference-dependent hydraulic clutch as claimed in claim 5, wherein a cooling passage (48) leads into the clutch space (61) from the displacement machine (35) via a throttle valve (7).
7. The speed-difference-dependent hydraulic clutch as claimed in claim 2, wherein the common control valve (20) is formed by an actuating piston (53) that can be displaced in a blushing (51), the bushing having inlet openings (56, 57) to the reservoir (8) at both ends and having a first (59) and a second (58) lateral control opening (58, 59), one (59) of which is connected to the displacement machine (35) by the second inlet opening (57) and the other (58) is connected to the displacement machine (35) by the first inlet opening (56) (delivery side and intake side respectively), and the actuating piston (53) closing the first (58) and the second (59) control opening, respectively, in its two end positions (53, 53") and closing the two control openings (58, 59) reciprocally to a greater or lesser extent in the intermediate positions (53').
8. The speed-difference-dependent hydraulic clutch as claimed in claim 7, wherein the bushing (51) of the control valve (20) is arranged in a plane transverse to the axis of rotation of the clutch, in the region of the rotary inputs (13,14).
9. The speed-difference-dependent hydraulic clutch as claimed in claim 5, wherein the double-acting nonreturn valve (22) between the displacement machine (35) and the pressure chamber (4) comprises a tangential hole (65) in a plane transverse to the axis of rotation of the clutch and a closing body (71) guided in said hole, the two ends of the tangential hole (65) being connected to the third and fourth opening (11, 12) of the displacement machine (35) and their center being connected to the pressure chamber (4).
CA002385717A 1999-10-12 2000-10-12 Speed-difference-dependent hydraulic clutch with control valves Expired - Fee Related CA2385717C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0070399U AT3832U1 (en) 1999-10-12 1999-10-12 SPEED DIFFERENTIAL-RELATED HYDRAULIC CLUTCH WITH CONTROL VALVES
ATGM703/99 1999-10-12
PCT/AT2000/000264 WO2001027487A1 (en) 1999-10-12 2000-10-12 Rotational speed differential hydraulic clutch having control valves

Publications (2)

Publication Number Publication Date
CA2385717A1 true CA2385717A1 (en) 2001-04-19
CA2385717C CA2385717C (en) 2009-11-24

Family

ID=3497594

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002385717A Expired - Fee Related CA2385717C (en) 1999-10-12 2000-10-12 Speed-difference-dependent hydraulic clutch with control valves

Country Status (6)

Country Link
US (2) US6684991B1 (en)
EP (1) EP1224405B1 (en)
AT (2) AT3832U1 (en)
CA (1) CA2385717C (en)
DE (1) DE50009376D1 (en)
WO (1) WO2001027487A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT3832U1 (en) * 1999-10-12 2000-08-25 Steyr Daimler Puch Ag SPEED DIFFERENTIAL-RELATED HYDRAULIC CLUTCH WITH CONTROL VALVES
AT4837U1 (en) 2000-09-27 2001-12-27 Steyr Powertrain Ag & Co Kg DRIVE SYSTEM FOR AN ALL-WHEEL DRIVE MOTOR VEHICLE
US6938221B2 (en) * 2001-11-30 2005-08-30 Microsoft Corporation User interface for stylus-based user input
US20040097323A1 (en) * 2002-11-15 2004-05-20 Duan Xiaohong N. Torque biasing assembly and method
AT6574U1 (en) 2002-11-29 2003-12-29 Magna Steyr Powertrain Ag & Co SPEED DIFFERENTIAL COUPLING WITH MAGNETORHEOLOGICAL WORKING FLUID
WO2004097241A2 (en) 2003-04-28 2004-11-11 Magna Steyr Powertrain Ag & Co Kg Rotation speed dependent hydraulic clutch provided with a control valve
DE102004048085A1 (en) * 2004-09-30 2006-04-06 Zf Friedrichshafen Ag Switchable stabilizer for a motor vehicle
DE102006037991A1 (en) * 2006-08-14 2008-02-21 Magna Powertrain Ag & Co Kg Clutch unit for drive train of motor vehicle, has outlet channel and drainage borehole with progression aligned radially outwards or parallel to rotational axis in central area with respect to flow direction of fluid
JP6410854B2 (en) 2017-01-24 2018-10-24 本田技研工業株式会社 Hydraulic clutch device
DE112018000754A5 (en) * 2017-02-10 2019-11-07 Schaeffler Technologies AG & Co. KG Actuator for a clutch and manufacturing process

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800930A (en) * 1972-09-22 1974-04-02 Sommer Co Variable speed drive
US3894446A (en) * 1974-06-03 1975-07-15 Twin Disc Inc Power transmission having friction clutch bias differential with automatic clutch release
US4719998A (en) * 1984-05-29 1988-01-19 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Power transmission system for vehicle
US4727966A (en) * 1984-05-30 1988-03-01 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Differential with differential motion limiting mechanism
US4581895A (en) * 1984-06-18 1986-04-15 Deere & Company Hydrostatic transaxle assembly
FR2623581B1 (en) * 1987-11-25 1991-09-27 Valeo SYSTEM FOR AUTOMATICALLY CONTROLLING A COUPLING CLUTCH OF TWO ROTATING SHAFTS
JPH04151029A (en) * 1990-10-11 1992-05-25 Toyoda Mach Works Ltd Driving power transmission device
US5536215A (en) * 1993-02-10 1996-07-16 Asha Corporation Hydraulic coupling for vehicle drivetrain
US5611746A (en) * 1995-06-28 1997-03-18 Asha Corporation Vehicle drivetrain coupling
US5827145A (en) * 1997-03-17 1998-10-27 Asha Corporation Hydraulic coupling having supplemental actuation
US6041903A (en) * 1997-12-17 2000-03-28 New Venture Gear, Inc. Hydraulic coupling for vehicular power transfer systems
AT405967B (en) * 1997-12-23 2000-01-25 Steyr Daimler Puch Ag SPEED DIFFERENTIAL-RELATED HYDRAULIC CLUTCH
US5964126A (en) * 1998-09-02 1999-10-12 Mclaren Automotive Group, Inc. Hydraulic coupling for auxiliary drive axle of a vehicle drivetrain
AT2964U1 (en) * 1998-09-25 1999-07-26 Steyr Daimler Puch Ag POWER TRANSMISSION UNIT WITH SPEED-RELATED HYDRAULIC CLUTCH
AT3020U1 (en) * 1998-10-29 1999-08-25 Steyr Daimler Puch Ag SPEED DIFFERENTIAL-RELATED HYDRAULIC CLUTCH WITH TORQUE LIMIT
US6120408A (en) * 1999-03-08 2000-09-19 Mclaren Automotive Group, Inc. Limited slip differential with temperature compensating valve
AT3832U1 (en) * 1999-10-12 2000-08-25 Steyr Daimler Puch Ag SPEED DIFFERENTIAL-RELATED HYDRAULIC CLUTCH WITH CONTROL VALVES

Also Published As

Publication number Publication date
ATE288037T1 (en) 2005-02-15
US6684991B1 (en) 2004-02-03
WO2001027487A1 (en) 2001-04-19
US6484856B1 (en) 2002-11-26
CA2385717C (en) 2009-11-24
EP1224405B1 (en) 2005-01-26
DE50009376D1 (en) 2005-03-03
AT3832U1 (en) 2000-08-25
EP1224405A1 (en) 2002-07-24

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