US20090107580A1 - Electronic Refueling and Vent Control System with Integrated Control - Google Patents
Electronic Refueling and Vent Control System with Integrated Control Download PDFInfo
- Publication number
- US20090107580A1 US20090107580A1 US11/923,803 US92380307A US2009107580A1 US 20090107580 A1 US20090107580 A1 US 20090107580A1 US 92380307 A US92380307 A US 92380307A US 2009107580 A1 US2009107580 A1 US 2009107580A1
- Authority
- US
- United States
- Prior art keywords
- vent
- tank
- fuel
- detecting
- control system
- 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.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/035—Fuel tanks characterised by venting means
- B60K2015/03561—Venting means working at specific times
- B60K2015/03576—Venting during filling the reservoir
Definitions
- the invention relates to a vent control system used in connection with fluid tanks, and more particularly, to an electronically controlled vent control system used in connection with a fuel tank.
- the vent control system disclosed is operable to automatically sense the beginning of a fueling event and to open a venting valve allowing fuel to enter the tank. Subsequently, as the fuel reaches a predetermined fill level, the vent control system is operable to automatically close the venting valve, halting the flow of fuel into the tank.
- the present invention relates to filling of fluid tanks, and more particularly to the venting of gasses or vapors in those tanks during the filling process.
- these systems are known as Onboard Refueling Vapor Recovery (ORVR) systems.
- ORVR Onboard Refueling Vapor Recovery
- a fluid As a fluid enters a tank, it must displace the gas or vapor already in the tank.
- gas or vapor may be a benign substance such as air.
- the release of this vapor must be controlled so as to prevent the release of harmful substances.
- the venting of this vapor is trivial as the gas is allowed to escape through the fill point, or the tank may include a manually operated vent.
- venting be controlled so that environmentally harmful fuel vapor is not released into the atmosphere.
- fuel filler nozzles and fuel tank filler tubes have been designed to create a liquid or vapor seal between the nozzle and tube preventing the release of vapor through that outlet.
- a separate vent must be created that will allow the venting of vapor while retaining hydrocarbons, usually in a carbon charged filter canister.
- filler nozzles which are operable to automatically shut off when a certain level of back pressure within the tank being filled is reached. This design allows for the automatic filling of a tank while lessening the risk of an undesirable over-fill and spill. It is also known to utilize the vapor vent in connection with this automatic shut-off technology. Specifically, by closing the vapor vent it is possible to increase the pressure within the tank, causing the filler nozzle to shut off.
- the tank is a fuel tank in a vehicle
- advanced refueling and venting systems capable of automatically controlling the opening and closing of one or more vapor vents.
- the present invention provides a self-contained system that operates free from other electrical systems that may be present depending on the application.
- the fluid tank were a fuel tank installed on a passenger vehicle, there may be an engine control or powertrain control module associated with that vehicle.
- Existing systems tie into these controls, occupying physical space and using processing power.
- the present invention is able to operate independently of these controls, freeing space and processing power on the engine or powertrain control modules.
- the present invention is drawn to a new and improved electronically controlled vent control system. While the present invention may find greatest application in connection with the fuel tanks of vehicles, and the various examples herein are described in relation to vehicles, it is applicable to other fluid tanks which have a need for controlled venting of vapors from the tank.
- the apparatus of the present invention includes a sensor operable to detect the beginning of a refueling event, a sensor operable to detect when a predetermined fill level within the tank has been reached, an electronic control apparatus operable to send a signal once a refueling event has been detected and when the predetermined fill level has been reached, and a vent valve operable to open and close in response to signals received from the electronic control apparatus.
- the apparatus When in operation, the apparatus first detects the beginning of a refueling event by detecting the presence of a fill nozzle being inserted into a filler tube. When a fill nozzle is detected, a signal is sent to the vent valve causing it to open. With the vent valve open, pressure is released from the tank, allowing fuel to be introduced. As the fuel is introduced, a passive fill level sensor monitors the level of fuel in the tank. Once a predetermined level of fuel within the tank has been reached, the level sensor sends a signal to the vent valve causing it to close. By closing the vent valve, the system causes pressure in the tank to rise. The increased pressure causes the fill nozzle to automatically shut off, completing the fueling cycle.
- FIG. 1 is a schematic showing the relationship of the elements of the present invention
- FIG. 1 depicts a fuel tank 10 made of a material such as plastic or metal.
- Filler tube 12 is shown in fluid communication with tank 10 .
- Filler nozzle 14 is shown inserted into filler tube 12 .
- Filler nozzle sensor 16 is shown in proximity to filler nozzle 14 .
- Filler nozzle sensor 16 can be one of any number of known technologies for detecting the presence of filler nozzle 16 , which is typically made of a ferrous metal.
- filler nozzle sensor 16 can be one of any number of known types of sensors such as infrared, magnetic, a thermistor or resistor array, or a proximity sensor.
- filler nozzle sensor 16 can also be an electrical switch that is completed when the flap is opened.
- fuel 18 Within fuel tank 10 is fuel 18 and fuel vapor/air mix 20 . As additional fuel 18 is introduced into tank 10 , vapor/air mix 20 is forced from tank 10 through vent valve 22 . After exiting vent valve 22 , vapor/air mix 20 travels through conduit 24 which is in fluid communication with vent valve 22 and a hydrocarbon recovery system (not shown). Also fully within tank 10 is fuel level sensor 26 . In a preferred embodiment, fuel level sensor 26 is a passive system such as a thermistor or other device which is able to detect the level of fuel in tank 10 , however, active fuel level sensors such as a float arm or other known systems may be used without deviating from the scope of this invention. Fuel level sensor 26 is operable to send a signal to vent valve 22 when the level of liquid fuel 18 within tank 10 reaches a predetermined level.
- Fuel level sensor 26 and filler nozzle sensor 16 are both electrically connected to vent valve 22 by electrical connections 28 and 30 respectively. Vent valve 22 is also supplied power from battery 32 via electrical connection 34 .
- Vent valve 22 is any one of a number of known valves in which the unpowered state is normally closed.
- vent valve will include an electromechanical solenoid which is employed to open the valve in response to an electrical signal received from filler nozzle sensor 16 via electrical connection 30 , and to automatically close once the signal from filler nozzle sensor 16 is lost.
- vent valve 22 will also close in response to a signal received from fuel level sensor 26 via electrical connection 28 .
- Control for vent valve 22 is provided by one or more logic circuits 36 located within housing 38 of vent valve 22 .
- Logic circuits 36 allow the vent valve 22 to operate in a more controlled fashion. For example, due to sloshing of liquid fuel 18 , fuel level sensor 26 may prematurely signal a full condition. In an uncontrolled system, such a signal would cause vent valve 22 to prematurely close. By adding logic circuit 36 a premature signal may be ignored, allowing proper operation of the system.
- such circuitry is physically located within housing 38 of vent valve 22 although it may be associated with alternative elements of the system without deviating from the scope of the invention.
Abstract
Description
- The invention relates to a vent control system used in connection with fluid tanks, and more particularly, to an electronically controlled vent control system used in connection with a fuel tank. The vent control system disclosed is operable to automatically sense the beginning of a fueling event and to open a venting valve allowing fuel to enter the tank. Subsequently, as the fuel reaches a predetermined fill level, the vent control system is operable to automatically close the venting valve, halting the flow of fuel into the tank.
- The present invention relates to filling of fluid tanks, and more particularly to the venting of gasses or vapors in those tanks during the filling process. In general, these systems are known as Onboard Refueling Vapor Recovery (ORVR) systems. Typically, as a fluid enters a tank, it must displace the gas or vapor already in the tank. Depending on the fluid in the tank, such gas or vapor may be a benign substance such as air. However, in the case of volatile fluids such as gasoline which give off vapor, the release of this vapor must be controlled so as to prevent the release of harmful substances. In some systems, the venting of this vapor is trivial as the gas is allowed to escape through the fill point, or the tank may include a manually operated vent. However, in certain applications, such as the filling of a fuel tank, it is desirable that venting be controlled so that environmentally harmful fuel vapor is not released into the atmosphere. In these applications, fuel filler nozzles and fuel tank filler tubes have been designed to create a liquid or vapor seal between the nozzle and tube preventing the release of vapor through that outlet. As a result, a separate vent must be created that will allow the venting of vapor while retaining hydrocarbons, usually in a carbon charged filter canister.
- Furthermore, it is known to use filler nozzles which are operable to automatically shut off when a certain level of back pressure within the tank being filled is reached. This design allows for the automatic filling of a tank while lessening the risk of an undesirable over-fill and spill. It is also known to utilize the vapor vent in connection with this automatic shut-off technology. Specifically, by closing the vapor vent it is possible to increase the pressure within the tank, causing the filler nozzle to shut off.
- Finally, in applications in which the tank is a fuel tank in a vehicle, it is desirable to include additional safeguards to prevent the release of fuel in the event of a vehicle roll-over. Thus, for each of the reasons, it is desirable to have advanced refueling and venting systems capable of automatically controlling the opening and closing of one or more vapor vents.
- Prior to the present invention, various refueling systems have been disclosed to control the flow of fuel into a fuel tank and the associated release of vapor out of the tank. U.S. Pat. No. 6,601,617, issued Aug. 5, 2003, to Enge, and U.S. Pat. No. 5,687,762 issued Nov. 18, 1997 to Teets, et al, are illustrative. While these patents disclose certain elements of automatic venting systems, the present invention provides an improvement in that it provides integrated electronic control of the opening and closing of the vent valve. This electronic control provides more precise opening and closing of the valve, reducing the amount of vapor allowed to escape from the tank. Furthermore, with the exception of an electrical connection to the vehicle battery to supply power, the present invention provides a self-contained system that operates free from other electrical systems that may be present depending on the application. For example, if the fluid tank were a fuel tank installed on a passenger vehicle, there may be an engine control or powertrain control module associated with that vehicle. Existing systems tie into these controls, occupying physical space and using processing power. The present invention is able to operate independently of these controls, freeing space and processing power on the engine or powertrain control modules.
- Thus, it is an object of the present invention to provide a vent control system capable of automatically opening a vapor vent in response to a refueling event.
- It is a further object of the present invention to provide an electronically controlled vent control system operable for use in connection with a fuel tank of a vehicle which, with the exception of a power connection, is self contained.
- The present invention is drawn to a new and improved electronically controlled vent control system. While the present invention may find greatest application in connection with the fuel tanks of vehicles, and the various examples herein are described in relation to vehicles, it is applicable to other fluid tanks which have a need for controlled venting of vapors from the tank. The apparatus of the present invention includes a sensor operable to detect the beginning of a refueling event, a sensor operable to detect when a predetermined fill level within the tank has been reached, an electronic control apparatus operable to send a signal once a refueling event has been detected and when the predetermined fill level has been reached, and a vent valve operable to open and close in response to signals received from the electronic control apparatus.
- When in operation, the apparatus first detects the beginning of a refueling event by detecting the presence of a fill nozzle being inserted into a filler tube. When a fill nozzle is detected, a signal is sent to the vent valve causing it to open. With the vent valve open, pressure is released from the tank, allowing fuel to be introduced. As the fuel is introduced, a passive fill level sensor monitors the level of fuel in the tank. Once a predetermined level of fuel within the tank has been reached, the level sensor sends a signal to the vent valve causing it to close. By closing the vent valve, the system causes pressure in the tank to rise. The increased pressure causes the fill nozzle to automatically shut off, completing the fueling cycle.
- These and other features, objects, and advantages of this invention will become apparent from the following detailed description and drawing in which:
-
FIG. 1 is a schematic showing the relationship of the elements of the present invention; -
FIG. 1 depicts afuel tank 10 made of a material such as plastic or metal.Filler tube 12 is shown in fluid communication withtank 10.Filler nozzle 14 is shown inserted intofiller tube 12.Filler nozzle sensor 16 is shown in proximity tofiller nozzle 14.Filler nozzle sensor 16 can be one of any number of known technologies for detecting the presence offiller nozzle 16, which is typically made of a ferrous metal. Thus,filler nozzle sensor 16 can be one of any number of known types of sensors such as infrared, magnetic, a thermistor or resistor array, or a proximity sensor. Alternatively, as there is typically a flap-type vent in the opening offiller tube 12 which is opened byfiller nozzle 14 when it is inserted intofiller tube 12,filler nozzle sensor 16 can also be an electrical switch that is completed when the flap is opened. - Within
fuel tank 10 isfuel 18 and fuel vapor/air mix 20. Asadditional fuel 18 is introduced intotank 10, vapor/air mix 20 is forced fromtank 10 throughvent valve 22. After exitingvent valve 22, vapor/air mix 20 travels throughconduit 24 which is in fluid communication withvent valve 22 and a hydrocarbon recovery system (not shown). Also fully withintank 10 isfuel level sensor 26. In a preferred embodiment,fuel level sensor 26 is a passive system such as a thermistor or other device which is able to detect the level of fuel intank 10, however, active fuel level sensors such as a float arm or other known systems may be used without deviating from the scope of this invention.Fuel level sensor 26 is operable to send a signal to ventvalve 22 when the level ofliquid fuel 18 withintank 10 reaches a predetermined level. -
Fuel level sensor 26 andfiller nozzle sensor 16 are both electrically connected tovent valve 22 byelectrical connections Vent valve 22 is also supplied power frombattery 32 viaelectrical connection 34. -
Vent valve 22 is any one of a number of known valves in which the unpowered state is normally closed. Typically, vent valve will include an electromechanical solenoid which is employed to open the valve in response to an electrical signal received fromfiller nozzle sensor 16 viaelectrical connection 30, and to automatically close once the signal fromfiller nozzle sensor 16 is lost. Similarly,vent valve 22 will also close in response to a signal received fromfuel level sensor 26 viaelectrical connection 28. - Control for
vent valve 22 is provided by one ormore logic circuits 36 located withinhousing 38 ofvent valve 22.Logic circuits 36 allow thevent valve 22 to operate in a more controlled fashion. For example, due to sloshing ofliquid fuel 18,fuel level sensor 26 may prematurely signal a full condition. In an uncontrolled system, such a signal would causevent valve 22 to prematurely close. By adding logic circuit 36 a premature signal may be ignored, allowing proper operation of the system. In a preferred embodiment, such circuitry is physically located withinhousing 38 ofvent valve 22 although it may be associated with alternative elements of the system without deviating from the scope of the invention. - While a preferred embodiment of the invention has been shown and described, other embodiments will now become apparent to those skilled in the art. Accordingly, this invention is not to be limited to that which is shown and described but by the following claims.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/923,803 US20090107580A1 (en) | 2007-10-25 | 2007-10-25 | Electronic Refueling and Vent Control System with Integrated Control |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US11/923,803 US20090107580A1 (en) | 2007-10-25 | 2007-10-25 | Electronic Refueling and Vent Control System with Integrated Control |
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US20090107580A1 true US20090107580A1 (en) | 2009-04-30 |
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US11/923,803 Abandoned US20090107580A1 (en) | 2007-10-25 | 2007-10-25 | Electronic Refueling and Vent Control System with Integrated Control |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011123521A1 (en) * | 2010-03-30 | 2011-10-06 | Scully Signal Company | Dynamic self-checking interlock monitoring system |
US20150251893A1 (en) * | 2012-09-25 | 2015-09-10 | Volvo Construction Equipment Ab | Arrangement, a method and a computer program for controlling filling of a tank |
CN106812632A (en) * | 2015-11-11 | 2017-06-09 | 三菱自动车工程株式会社 | Evaporated fuel treating apparatus |
WO2019083534A1 (en) * | 2017-10-26 | 2019-05-02 | Volvo Truck Corporation | Fueling system and method of fueling |
US20190183037A1 (en) * | 2017-12-14 | 2019-06-20 | Cnh Industrial America Llc | Bulk product tank for an agricultural implement |
US11148523B2 (en) * | 2017-02-10 | 2021-10-19 | Kautex Textron Gmbh & Co. Kg | Method for controlling a filling process of an operating fluid container, and operating fluid container system |
US20230035628A1 (en) * | 2019-12-19 | 2023-02-02 | Vega Grieshaber Kg | Measuring device for detecting a filling or limit level of a filling material in a container and method for filling or emptying a container with or of a filling material |
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US5687762A (en) * | 1995-09-21 | 1997-11-18 | Chrysler Corporation | Fuel fill and vapor venting value unit for fuel tanks |
US6167920B1 (en) * | 1999-05-28 | 2001-01-02 | Borgwarner Inc. | Electromechanical refueling control system |
US6253802B1 (en) * | 1999-05-28 | 2001-07-03 | Borgwarner Inc. | Electromechanically controlled refueling valve |
US6311675B2 (en) * | 1999-04-28 | 2001-11-06 | Walbro Corporation | Vent valve and fuel pump module |
US6488015B2 (en) * | 2001-04-24 | 2002-12-03 | Nissan Motor, Co., Ltd. | Refueling system |
US6877488B2 (en) * | 2002-05-29 | 2005-04-12 | Nartron Corporation | Vehicle fuel management system |
US6918405B2 (en) * | 2003-12-04 | 2005-07-19 | Alfmeier Corporation | Fill limit vent valve |
US20050279406A1 (en) * | 2004-06-22 | 2005-12-22 | Atwood Jeffrey M | Vehicle fuel system |
US7055557B1 (en) * | 2005-03-03 | 2006-06-06 | Eaton Corporation | Dual seal filler neck with air relief valve |
US20070131281A1 (en) * | 2005-12-13 | 2007-06-14 | Delaware Capital Formation, Inc. | Underground fuel tank vent valve |
US7497207B2 (en) * | 2005-01-21 | 2009-03-03 | Ti Automotive (Neuss) Gmbh | Fuel tank and associated controller |
-
2007
- 2007-10-25 US US11/923,803 patent/US20090107580A1/en not_active Abandoned
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US5183087A (en) * | 1991-06-10 | 1993-02-02 | Borg-Warner Automotive Electronic & Mechanical Systems Corporation | Refueling vapor recovery system |
US5687762A (en) * | 1995-09-21 | 1997-11-18 | Chrysler Corporation | Fuel fill and vapor venting value unit for fuel tanks |
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011123521A1 (en) * | 2010-03-30 | 2011-10-06 | Scully Signal Company | Dynamic self-checking interlock monitoring system |
US8763622B2 (en) | 2010-03-30 | 2014-07-01 | Scully Signal Company | Dynamic self-checking interlock monitoring system |
US20150251893A1 (en) * | 2012-09-25 | 2015-09-10 | Volvo Construction Equipment Ab | Arrangement, a method and a computer program for controlling filling of a tank |
CN106812632A (en) * | 2015-11-11 | 2017-06-09 | 三菱自动车工程株式会社 | Evaporated fuel treating apparatus |
US10369881B2 (en) * | 2015-11-11 | 2019-08-06 | Mitsubishi Jidosha Engineering Kabushiki Kaisha | Evaporative fuel treatment apparatus |
US11148523B2 (en) * | 2017-02-10 | 2021-10-19 | Kautex Textron Gmbh & Co. Kg | Method for controlling a filling process of an operating fluid container, and operating fluid container system |
WO2019083534A1 (en) * | 2017-10-26 | 2019-05-02 | Volvo Truck Corporation | Fueling system and method of fueling |
US11254202B2 (en) | 2017-10-26 | 2022-02-22 | Volvo Truck Corporation | Fueling system and method of fueling |
US20190183037A1 (en) * | 2017-12-14 | 2019-06-20 | Cnh Industrial America Llc | Bulk product tank for an agricultural implement |
US11013167B2 (en) * | 2017-12-14 | 2021-05-25 | Cnh Industrial America Llc | Bulk product tank for an agricultural implement |
US20230035628A1 (en) * | 2019-12-19 | 2023-02-02 | Vega Grieshaber Kg | Measuring device for detecting a filling or limit level of a filling material in a container and method for filling or emptying a container with or of a filling material |
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