Engine synchronization

Details Engine synchronization Engine synchronization

1994-12-12

1996-11-26

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

F02P 500

Patent

active

055774750

ABSTRACT:
Synchronization of relative engine angular position information is provided in the absence of an absolute engine position input signal by inducing misfires in a known engine cylinder and then monitoring misfire behavior over a test period. If significant misfire activity does not occur in an engine cylinder assumed, in accord with an assumed engine absolute position, to correspond to the known engine cylinder, then the assumed engine absolute position was not correct and is corrected through application of a position offset to the assumed position. Misfires are induced and the absolute position corrected when the engine is operating at a level assumed to be insensitive to the misfires and the correction.

REFERENCES:
patent: 5331934 (1994-07-01), Asama et al.
patent: 5335744 (1994-08-01), Takasuka et al.
patent: 5343843 (1994-09-01), Hamren
patent: 5404853 (1995-04-01), Ishigami et al.
patent: 5467752 (1995-11-01), Murao et al.

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