Method for eliminating detonation in an engine

Details Method for eliminating detonation in an engine Method for eliminating detonation in an engine

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.

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