Method and arrangement for controlling a drive unit including an internal combustion engine
AssigneeRobert Bosch GmbH
InventorVolkmar Foelsche
Life of this patent
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Abstract
The invention relates to a method and an arrangement for controlling a drive unit (1) including an internal combustion engine (5). The method and arrangement function to provide a switchoff of the engine (5) with less vibration. In the internal combustion engine (5), the air or a mixture of air and fuel is compressed in a combustion chamber (10) while utilizing a compressing device (15) and especially a piston. A supply of fuel is reduced with a switchoff of the engine (5). When switching off the engine (5), a relief of load of the compressing device (15) is initiated in addition to the reduction of the metering of fuel.
Claims11
A method of controlling a drive unit including an internal combustion engine, the method comprising the steps of:
- compressing air or a mixture of air and fuel in a combustion chamber of said engine utilizing compressor means;
- and,
- when switching off said engine, reducing the metering of fuel and initiating relieving load of said compressor means, wherein relieving of said load is initiated in advance of or during the activation of the reduction of the metering of the fuel.
A method of controlling a drive unit including an internal combustion engine, the method comprising the steps of:
- compressing air or a mixture of air and fuel in a combustion chamber of said engine utilizing compressor means;
- and,
- when switching off said engine, reducing the metering of fuel and initiating relieving load of said compressor means, wherein relieving load of said compressor is brought about by opening a throttle flap for the air supply in a non-fired state of the combustion chamber.
An arrangement for controlling a drive unit including an internal combustion engine, the arrangement comprising:
- compressor means for compressing air or a mixture of air and fuel in a combustion chamber of said engine;
- means for reducing a metering of fuel to said engine when switching off said engine;
- and,
- means for initiating a relieving of said compressor means of load when switching off said engine in addition to reducing said metering of fuel, wherein said relieving of said compressor means is initiated in advance of or during the activation of a reduction of the metering of the fuel.
Dependencies are inferred from the claim text.