Internal-combustion engines – Spark ignition timing control – Electronic control
Reexamination Certificate
2005-02-01
2005-02-01
Kwon, John T. (Department: 3747)
Internal-combustion engines
Spark ignition timing control
Electronic control
C123S406280, C123S435000
Reexamination Certificate
active
06848421
ABSTRACT:
A method and control system that directly determines combustion quality by measuring an ionization signal of each combustion event during initial engine operation is shown. The determined combustion quality is used to optimize engine performance for emissions and driveability by compensating various engine control parameters during initial engine operation, including starting. Compensation of engine control parameters may include changes to fuel delivery, spark ignition timing, and engine load. Any compensation of the engine control acts to ensure that a sufficient quantity of vaporized fuel is delivered to the engine to effectively start and operate the engine at the load level demanded by the engine, engine loads, and the operator.
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Baker Michael Edward
Karau Philip Allen
Malaczynski Gerard Wladyslaw
Rahman Mahfuzur
Delphi Technologies Inc.
Funke Jimmy L.
Kwon John T.
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