Engine transient control system

Details Engine transient control system Engine transient control system

1996-01-18

1998-06-23

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Fuel injection system

123418, F02P 515

Patent

active

057690537

ABSTRACT:
A feedback control system for an internal combustion engine and in the illustrated embodiment an outboard motor. In order to maintain the desired air-fuel ratio, a air-fuel ratio sensor is employed and changes the air-fuel ratio to maintain the desired air-fuel ratio through a feedback control system. In order to minimize fluctuations in engine speed during changes in air-fuel ratio, the timing of the firing of the spark plugs of the engine is varied. The amount of adjustment in spark timing depends on one or more of a variety of parameters, such as engine speed, engine intake air flow, and exhaust system back pressure. In addition, at least one cylinder may be adjusted differently from the other cylinders to compensate for the different conditions existent in the cylinders.

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