Hybrid vehicle propulsion system utilizing knock suppression
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G06F-019/00
F02B-007/04
F02M-043/00
B60W-010/06
출원번호
UP-0837396
(2007-08-10)
등록번호
US-7676321
(2010-04-21)
발명자
/ 주소
Andri, Michael
출원인 / 주소
Ford Global Technologies, LLC
대리인 / 주소
Lippa, Allan J.
인용정보
피인용 횟수 :
24인용 특허 :
88
초록▼
A hybrid propulsion system for a vehicle and method of operation are provided. As one example, the system comprises an engine including at least one combustion chamber, a motor configured to selectively propel the vehicle via the drive wheel, a fuel system configured to deliver a first substance and
A hybrid propulsion system for a vehicle and method of operation are provided. As one example, the system comprises an engine including at least one combustion chamber, a motor configured to selectively propel the vehicle via the drive wheel, a fuel system configured to deliver a first substance and a second substance to the combustion chamber in varying relative amounts, wherein the first substance includes a fuel and the second substance includes a greater concentration of a knock suppressing substance than the first substance; and a control system configured to operate the fuel system to vary the relative amounts of the first substance and the second substance delivered to the combustion chamber in response to an operating condition while operating the motor to propel the vehicle.
대표청구항▼
The invention claimed is: 1. A hybrid electric vehicle propulsion system, comprising: an internal combustion engine including at least a combustion chamber configured to propel the vehicle; an electric motor configured to propel the vehicle; a first injector configured to deliver at least gasoline
The invention claimed is: 1. A hybrid electric vehicle propulsion system, comprising: an internal combustion engine including at least a combustion chamber configured to propel the vehicle; an electric motor configured to propel the vehicle; a first injector configured to deliver at least gasoline to the combustion chamber; a second injector configured to deliver at least ethanol to the combustion chamber; a boosting device communicating with the combustion chamber via an air intake passage; and a control system configured operate the first and second injector to deliver the gasoline and ethanol to the combustion chamber in varying relative amounts responsive to a level of boost provided to the combustion chamber by the boosting device, and to vary a level of torque provided by the motor to a drive wheel responsive to the relative amounts of the gasoline and the ethanol delivered to the combustion chamber. 2. A method of operating a hybrid vehicle propulsion system including an engine and a motor coupled to at least a drive wheel of the vehicle, the method comprising: delivering gasoline and alcohol to the engine in varying relative amounts responsive to an operating condition; and varying an amount of energy stored in an energy storage device operatively coupled to the motor responsive to a condition of a fuel system. 3. The method of claim 2, wherein the condition of the fuel system includes an amount of the alcohol stored on-board the vehicle. 4. The method of claim 2, where the condition of the fuel system includes a rate at which the alcohol is delivered to the engine. 5. The method of claim 2, wherein the condition of the fuel system includes the relative amounts of gasoline and alcohol that are delivered to the engine. 6. The method of claim 2, further comprising separating the gasoline and the alcohol from a fuel mixture via a fuel separator coupled to the engine, wherein the condition of the fuel system includes a condition of the fuel separator. 7. The method of claim 2 further comprising, varying a level of boost provided to the engine by a boosting device responsive to the relative amounts of the gasoline and alcohol provided to the engine, wherein the boosting device includes one of a turbocharger and a supercharger. 8. The method of claim 2, wherein the operating condition includes engine load, and wherein the amount of alcohol provided to the engine is increased relative to the amount of gasoline that is provided to the engine with increasing engine load. 9. The method of claim 2, wherein the operating condition includes a level of torque produced by the engine, and wherein the amount of alcohol provided to the engine is increased relative to the amount of gasoline that is provided to the engine with an increasing level of torque produced by the engine. 10. A hybrid propulsion system for a vehicle including at least one drive wheel, the system comprising: an engine including at least one combustion chamber; a motor configured to selectively propel the vehicle via the drive wheel; a fuel system configured to deliver a first substance and a second substance to the combustion chamber in varying relative amounts, wherein the first substance includes a fuel and the second substance includes a greater concentration of a knock suppressing substance than the first substance; and a control system configured to operate the fuel system to vary the relative amounts of the first substance and the second substance delivered to the combustion chamber in response to an operating condition while operating the motor to propel the vehicle. 11. The system of claim 10, wherein the fuel system further includes a first injector configured to deliver the first substance to an intake passage communicating with the combustion chamber and a second injector configured to deliver the second substance directly to the combustion chamber. 12. The system of claim 10, wherein the fuel system further includes a first injector configured to deliver the first substance directly to the combustion chamber and a second injector configured to deliver the second substance directly to the combustion chamber. 13. The system of claim 10, further comprising an energy storage device configured to provide electrical energy to the motor to propel the vehicle via the drive wheel, wherein the motor is an electric motor. 14. The system of claim 10, wherein the operating condition includes at least one of engine load and a level of torque produced by the engine. 15. The system of claim 10, wherein the knock suppressing substance includes an alcohol and wherein the fuel includes gasoline. 16. The system of claim 10, wherein the first substance does not include the knock suppressing substance. 17. The system of claim 10, further comprising a boosting device coupled to an intake passage communicating with the combustion chamber, wherein the control system is configured to vary a level of boost provided to the combustion chamber by the boosting device responsive to the operating condition. 18. The system of claim 17, wherein the control system is further configured to increase the relative amount of the second substance delivered to the combustion chamber relative to the first substance with an increasing level of boost provided by the boosting device. 19. The system of claim 10, wherein the control system is further configured to vary a motor output responsive to a condition of the fuel system. 20. The system of claim 19, wherein the condition of the fuel system includes the relative amounts of the first substance and second substance delivered to the combustion chamber. 21. The system of claim 19, wherein the condition of the fuel system includes an amount of the knock suppressing substance stored on-board the vehicle. 22. The system of claim 19, further comprising a fuel separator configured to separate the first and second substance from a fuel mixture, wherein the condition of the fuel system includes a condition of the fuel separator.
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이 특허에 인용된 특허 (88)
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