Method and device for improving the starting response of an internal combustion engine
AssigneeRobert Bosch GmbH
InventorsUdo Sieber, Jochen Laubender, Andre-Francisco Casal Kulzer
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Abstract
The present invention relates to methods for charging at least one combustion chamber (12) of a spark-ignition combustion engine (10) with fuel and air. At least one combustion chamber charge is produced during a shutoff phase of the internal-combustion engine (10) and is ignited when the internal-combustion engine (10) is subsequently started. The methods are characterized in that, during the shutoff phase, at least one measure is taken to produce a high percentage of fuel vapor in the combustion chamber charge. The present invention also relates to a control unit for controlling the methods.
Claims9
A method for charging at least one combustion chamber (12) of a spark-ignition combustion engine (10) with fuel and air, at least one combustion chamber charge being produced during a shutoff phase of the internal-combustion engine (10) and being ignited when the internal-combustion engine (10) is subsequently started,
- wherein, during the shutoff phase, at least one measure is taken to produce a high percentage of fuel vapor in the combustion chamber charge, and
- wherein, the at least one measure taken to produce a high percentage of fuel vapor is to open a canister-purge valve (30) when the internal-combustion engine (10) is shut off.
A control unit (24) for controlling a method for charging at least one combustion chamber (12) of a spark-ignition combustion engine (10) with fuel and air, at least one combustion chamber charge being produced during a shutoff phase of the internal-combustion engine (10) and being ignited when the internal-combustion engine (10) is subsequently started,
- wherein in said method, during the shutoff phase, at least one measure is taken to produce a high percentage of fuel vapor in the combustion chamber charge, and
- wherein, the at least one measure taken to produce a high percentage of fuel vapor is to open a canister-purge valve (30) when the internal-combustion engine (10) is shut off.
Dependencies are inferred from the claim text.