Fuel system and method for operating a fuel system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02M-063/00
F02M-025/08
B60K-015/035
B60K-015/03
출원번호
US-0328307
(2011-12-16)
등록번호
US-9239032
(2016-01-19)
우선권정보
DE-10 2010 055 310 (2010-12-21)
발명자
/ 주소
Hagen, Harald
출원인 / 주소
AUDI AG
대리인 / 주소
Henry M. Feiereisen LLC
인용정보
피인용 횟수 :
4인용 특허 :
17
초록▼
A fuel system, in particular of a motor vehicle, with a fuel tank and a ventilation device for ventilating the fuel tank, wherein the ventilation device has at least one separation device which has a temporary accumulator for liquid fuel. The separation device has a fill level determination device f
A fuel system, in particular of a motor vehicle, with a fuel tank and a ventilation device for ventilating the fuel tank, wherein the ventilation device has at least one separation device which has a temporary accumulator for liquid fuel. The separation device has a fill level determination device for determining the fill level of in the temporary accumulator. The invention further relates to a method for operating a fuel system.
대표청구항▼
1. A fuel system comprising a fuel tank;a ventilation device for ventilating the fuel tank, said ventilation device including at least one separation device which includes a temporary accumulator and a fill level determination device for determining a fill level of liquid fuel in the temporary accum
1. A fuel system comprising a fuel tank;a ventilation device for ventilating the fuel tank, said ventilation device including at least one separation device which includes a temporary accumulator and a fill level determination device for determining a fill level of liquid fuel in the temporary accumulator; anda ventilation valve, said fill level determination device operatively connected to the ventilation valve and operating the ventilation valve in a first mode when the fill level of liquid fuel in the temporary accumulator is below a defined threshold fill level and operating the ventilation valve in a second mode when the fill level of liquid fuel in the temporary accumulator is above a defined threshold fill level. 2. The fuel system of claim 1 for use in a motor vehicle. 3. The fuel system of claim 1, wherein the fill level determination device comprises a fill level sensor said fill level sensor operating mechanically and/or electrically. 4. The fuel system of claim 3, wherein the fill level sensor is a member selected from the group consisting of a capacitive sensor, an inductive sensor, a resistive sensor, a radar sensor, a microwave sensor, an optical sensor and a fluid sensor. 5. The fuel system of claim 1, wherein the ventilation valve is fluidly arranged upstream of the separation device, for ventilating the fuel tank through the separation device. 6. The fuel system of claim 5, further comprising a control device which is assigned to the fill level determination device, a fuel delivery device and an overflow valve, wherein at least one of the fill level determination device and the control device are configured to operate at least one member selected from the group consisting of the ventilation valve, the overflow valve, and the fuel delivery device, in dependence on the fill level in the temporary accumulator through open-looped and/or closed-looped control. 7. The fuel system of claim 6, wherein the fuel delivery device is constructed as an ejector pump. 8. The fuel system of claim 1, further comprising at least one member selected from the group consisting of an aeration valve which switches in dependence on a fill level of the fuel tank and a safety valve which is assigned to the fuel tank, said member being fluidly arranged upstream of the separation device. 9. The fuel system of claim 1, wherein in the first mode a volume flow which flows through the ventilation valve is smaller in the second operating mode than in the first operating mode. 10. The fuel system of claim 9, wherein in the second operating mode the ventilation valve opens slower than in the first operating mode. 11. A method for operating a fuel system, comprising: determining a fill level in a temporary accumulator for liquid fuel by using a fill level determination device for determining a fill level of liquid fuel in the temporary accumulator, wherein the fuel system comprises a fuel tank and a ventilation device for ventilating the fuel tank, said ventilation device including at least one separation device, said separation device including the temporary accumulator, wherein said fill level determination device is assigned to the at least one separation device; andwith the fill level determination device operating a ventilation valve of the fuel system in a first mode when the fill level of liquid fuel in the temporary accumulator is below a defined threshold fill level, and operating the ventilation valve in a second mode when the fill level of liquid fuel in the temporary accumulator is above a defined threshold fill level. 12. The method of claim 11, wherein the fill level determination device comprises a fill level sensor said fill level sensor operating mechanically and/or electrically. 13. The method of claim 12, wherein the fill level sensor is a member selected from the group consisting of a capacitive sensor, an inductive sensor, a resistive sensor, a radar sensor, a microwave sensor, an optical sensor and a fluid sensor. 14. The method of claim 11, wherein the ventilation valve is fluidly arranged upstream of the separation device, for ventilating the fuel tank through the separation device. 15. The method of claim 11, wherein the fuel system further comprises at least one member selected from the group consisting of a ventilation valve, an overflow valve and a fuel delivery device, wherein the member is operated in dependence on the fill level in the temporary accumulator through open-looped and/or closed-looped control. 16. The method of claim 15, wherein the fuel delivery device is constructed as an ejector pump. 17. The method of claim 11, further comprising operating the ventilation valve in a first operating mode when the fill level in the temporary accumulator is below a defined threshold fill level or in a second operating mode when the fill level is above the threshold fill level, wherein a volume flow which flows through the ventilation valve is selected smaller in the first operating mode than in the first operating mode and/or the ventilation valve is opened more slowly in the second operating mode than in the first operating mode.
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이 특허에 인용된 특허 (17)
Reddy Sam R. (West Bloomfield MI) Gokhale Kalyan P. (New Berlin WI), Conductive foam vapor sensing.
Sung Shiang (New York NY) Steger John J. (Pittstown NJ) Dettling Joseph C. (Howell NJ) Burk Patrick L. (Freehold NJ), Fuel modification method and apparatus for reduction of pollutants emitted from internal combustion engines.
Wouters, Paul; Leonard, Stephane; Van Schaftingen, Jules-Joseph; Op De Beeck, Joel; Dougnier, Fran.cedilla.ois; Gerard, Yannick, Fuel system for a vehicle.
Mezger Manfred (Tamm DEX) Blumenstock Andreas (Ludwigsburg DEX) Frank Rainer (Sachsenheim DEX), Tank-venting system and motor vehicle having the system as well as a method and an arrangement for checking the operabil.
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