Engine control apparatus and related engine control method

Details Engine control apparatus and related engine control method Engine control apparatus and related engine control method

2007-04-20

2009-12-08

Cronin, Stephen K (Department: 3747)

Internal-combustion engines

Spark ignition timing control

Electronic control

C123S179300

Reexamination Certificate

active

07628138

ABSTRACT:
An engine control apparatus and related control method for an engine are disclosed wherein cylinder discrimination is executed based on a crank signal and a cam signal under a normal signal mode. If a failure occurs in either the crank signal or the cam signal, the cylinder discrimination is executed based on a normal one of the crank signal and the cam signal. A starter device is driven to crank up the engine until judgment is made that the engine enters a running state. A duration time for the starter device to be driven is measured and if the duration time reaches a limit time, the driving state of the starter device is interrupted. When either the crank signal or the cam signal encounters the failure, the limit time is set to a longer time than a preset time for the normal signal mode.

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