Internal-combustion engines – Spark ignition timing control – Electronic control
Reexamination Certificate
2005-09-20
2005-09-20
Wolfe, Jr., Willis R. (Department: 3747)
Internal-combustion engines
Spark ignition timing control
Electronic control
C123S406410
Reexamination Certificate
active
06945230
ABSTRACT:
A method eliminates detonation in an internal combustion engine (10) by identifying conditions that identify the imminence thereof. The method centers about the pressure inside the cylinder (16) of the internal combustion engine (10). The method tracks the pressure and when small rapid changes or fluctuations (38) in the pressure occur, the ignition timing is advanced for that particular cylinder (16). An alternative method utilizes a model of pressure based on an array of inputs and how the pressure should act based thereon. The method may also be used to maximize performance of the output of each cylinder (16) by retarding the ignition timing until the small fluctuations (38) appear. The ignition timing could immediately be advanced to prevent a detonation thus identifying a maximized output performance without reaching a detonation condition.
REFERENCES:
patent: 5063902 (1991-11-01), Inoue et al.
patent: 5682856 (1997-11-01), Tomisawa et al.
Meaney John D.
Ward Lance M.
Clark Hill PLC
TCI Automotive, LLC
Wolfe, Jr. Willis R.
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