Method for operating a hybrid vehicle and hybrid vehicle with a multi-cylinder internal combustion engine coupled to an electric motor
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02B-003/00
F02B-003/04
출원번호
US-0326838
(2006-01-06)
등록번호
US-7278392
(2007-10-09)
우선권정보
DE-10 2005 001 046(2005-01-07)
발명자
/ 주소
Zillmer,Michael
Pott,Ekkehard
Holz,Matthias
출원인 / 주소
Volkswagen AG
대리인 / 주소
Baker Botts L.L.P.
인용정보
피인용 횟수 :
58인용 특허 :
4
초록▼
In a method for operating a hybrid vehicle with a combustion engine coupled to an electric motor having at least one inlet and one outlet valve per cylinder, a variable valve control, and a fuel injection device, with a first partial power, from the overall drive power provided to the vehicle, it is
In a method for operating a hybrid vehicle with a combustion engine coupled to an electric motor having at least one inlet and one outlet valve per cylinder, a variable valve control, and a fuel injection device, with a first partial power, from the overall drive power provided to the vehicle, it is provided that upon request a cylinder that can be switched off is deactivated and filled with fresh gas, and upon request for activating the cylinder in the temporally next suction and/or compression phase of the cylinder a predetermined amount of fuel and an ignition of the mixture occurs by no later than the end of the compression phase and/or that in order to adjust the momentum during the activation of a cylinder that had been switched off a multiple injection of fuel occurs, preferably a dual injection, in a homogenous split mode of operation.
대표청구항▼
What is claimed is: 1. A method for operating a hybrid vehicle with a multi-cylinder internal combustion engine coupled to an electric motor comprising at least one inlet and at least one outlet valve per cylinder, a variable valve control, and a fuel injection device for directly injecting fuel in
What is claimed is: 1. A method for operating a hybrid vehicle with a multi-cylinder internal combustion engine coupled to an electric motor comprising at least one inlet and at least one outlet valve per cylinder, a variable valve control, and a fuel injection device for directly injecting fuel into the cylinders, with the overall driving power provided to the vehicle being provided in a first partial power by the internal combustion engine and a second partial power by an electric motor, the method comprising the steps of: upon the request for deactivating a cylinder that can be switched off, filling said cylinder with fresh gas and, upon request, to activate the cylinder, injecting a predetermined amount of fuel and igniting a mixture of said fuel and fresh gas in the temporally next suction or compression phase of the cylinder by no later than the end of the compression phase wherein for adjusting the momentum at the activation of a cylinder that was switched off, injecting of fuel multiple times in a homogenous split mode of operation. 2. A method according to claim 1, wherein the step of injecting multiple times comprises a dual injection. 3. A method according to claim 1, wherein at least one cylinder of the internal combustion engine can be switched off at a predetermined partial load. 4. A method according to claim 1, wherein all cylinders of the internal combustion engine can be switched off at a predetermined partial load. 5. A method according to claim 1, wherein the internal combustion engine is deactivated below a predetermined rotation of the internal combustion engine. 6. A method according to claim 1, wherein the internal combustion engine is deactivated below an idling rotation of the internal combustion engine. 7. A method according to claim 1, wherein subsequent to an interval, in which one or several cylinders are switched off, an activation of one or several cylinders occurs, if an overall drive power or load requested of the internal combustion engine and/or a rotation of the internal combustion engine is higher than the respectively predetermined levels. 8. A method according to claim 1, wherein the internal combustion engine is switched off in a stop-and-go operation. 9. A method according to claim 1, wherein in order to activate and/or deactivate one or several cylinders a deactivation and/or activation of at least one selected gas exchange valve occurs. 10. A method according to claim 9, wherein after a prior deactivation of a cylinder a temporally delayed activation of a selected gas exchange valve occurs when said cylinder is activated. 11. A method according to claim 1, wherein prior to the end of an expansion phase following a compression phase, a previously deactivated outlet valve is activated and, after the activation of the outlet valve a previously deactivated inlet valve is activated. 12. A method according to claim 1, wherein prior to the end of an expansion phase following a compression phase, a previously deactivated outlet valve is activated and, after the activation of the outlet valve and no later than the beginning of the subsequent suction phase a previously deactivated inlet valve is activated. 13. A method according to claim 1, wherein a determination of the amount of fresh air and/or mixture parameters present in a deactivated cylinder occurs in the switched off operational state and wherein the determined amount of fresh air and/or said mixture parameters is used for determining the fuel amount to be injected into said cylinder. 14. A method according to claim 1, wherein the first part of the fuel injection into said cylinder occurs by no later than the end of the suction phase and the latest fuel injection occurs during the compression phase. 15. A method according to claim 1, wherein for adjusting the momentum at the activation of a cylinder that had been switched off an advance angle shift occurs late for one or more combustion cycles of the cylinder. 16. A hybrid vehicle comprising: a multi-cylinder internal combustion engine coupled to an electric motor having at least one partial power, from an overall drive power provided to the vehicle, provided by the internal combustion engine and a second partial power provided by the electric motor, a device for activating and deactivating a cylinder operable, upon the request for deactivating a cylinder that can be switched off, to cause said cylinder to be filled with fresh gas and, upon request of activating said cylinder, to cause an injection of a predetermined amount of fuel and to cause the ignition of the mixture in the temporal next suction and/or compression phase of the cylinder by no later than the end of the compression phase, and a device for adjusting the momentum operable to cause a multiple injection in a homogenous split mode of operation at the activation of a cylinder that was switched off. 17. A hybrid vehicle according to claim 16, wherein the electric motor and the multi-cylinder internal combustion engine are coupled to one another in a fixed manner. 18. A hybrid vehicle according to claim 16, wherein the electric motor and the multi-cylinder integral combustion engine are coupled to one another in a variable manner. 19. A method for operating a hybrid vehicle with a multi-cylinder internal combustion engine coupled to an electric motor comprising at least one inlet and at least one outlet valve per cylinder, a variable valve control, and a fuel injection device for directly injecting fuel into the cylinders, with the overall driving power provided to the vehicle being provided in a first partial power by the internal combustion engine and a second partial power by an electric motor, the method comprising the steps of: upon the request for deactivating a cylinder that can be switched off, filling said cylinder with fresh gas and, upon request, to activate the cylinder, injecting of fuel multiple times in a homogenous split mode of operation and igniting a mixture of said fuel and fresh gas in the temporally next suction or compression phase of the cylinder by no later than the end of the compression phase.
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