Engine control system and method

Details Engine control system and method Engine control system and method

1997-09-11

2000-03-07

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Fuel injection system

F02M 5100

Patent

active

060326530

ABSTRACT:
An improved fuel injection control system for an engine, wherein the fuel injectors are controlled during normal engine running by sensing engine running conditions. The engine is controlled in the lower ranges and under abnormal conditions by disabling one or more cylinders. On initial starting an enriched amount of fuel is supplied from the fuel injectors. This amount of enriched fuel is held for a predetermined time and then is gradually reduced to return to normal control even when there is cylinder disabling. The spark timing is also advanced well beyond the maximum normal spark advance during starting and is retarded to the normal spark timing after a predetermined time period.

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