Method and Apparatus for Controlling the Starting of a Forced Induction Internal Combustion Engine
AssigneePerkins Engines Company Limited
InventorParesh Rameshchandra Desai
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Abstract
Starting an internal combustion engine may be difficult as a consequence of the operating conditions of the engine. Even after the engine has started, it may take a long period of time for the engine to reach operating temperatures. In the present disclosure, when engine start difficulty is expected, before starting the engine a forced induction compressor arranged with the engine may be turned on to increase the engine intake air pressure before the engine is started.
Claims20
A method for starting a forced induction internal combustion engine which has a compressor assist device, the method comprising the steps of:
- when engine start is demanded, determining from at least one measured parameter whether engine start difficulty is expected;
- if engine start difficulty is expected, turning on the compressor assist device to drive a forced induction compressor, thereby increasing the engine intake air pressure before starting the engine;
- starting the engine;
- and
- returning the compressor assist device to normal operation when the engine exceeds a first performance threshold, or when the compressor assist device has been on for a period of time exceeding a first period of time, wherein the first period of time is determined from the at least one measured parameter.
A controller to control the starting of a forced induction internal combustion engine which has a compressor assist device, the controller being configured to:
- when engine start is demanded, determine from at least one measured parameter whether engine start difficulty is expected;
- if engine start difficulty is expected, turn on the compressor assist device to drive a forced induction compressor, thereby increasing the engine intake air pressure before starting the engine;
- start the engine;
- and
- return the compressor assist device to normal operation when the engine exceeds a first performance threshold, or when the compressor assist device has been on for a period of time exceeding a first period of time, wherein the first period of time is determined from the at least one measured parameter.
Dependencies are inferred from the claim text.