System and method for controlling the transient torque output of

Details System and method for controlling the transient torque output of System and method for controlling the transient torque output of

1994-08-31

1995-08-01

Wolfe, Willis R.

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

123419, 123481, F02D 1110, F02D 4304, F02D 1702, F02P 515

Patent

active

054372534

ABSTRACT:
A system for controlling the transient torque output of a multicylinder, variable displacement, spark-ignited, fuel injected automotive internal combustion engine during periods when the effective displacement of the engine is being changed includes a spark timing controller, a throttle controller for positioning an intake air throttle, an engine cylinder operator for deactivating and reactivating at least some of the engine's cylinders, and an engine controller having a processor for selecting the number of cylinders for operation and for operating the spark timing controller, the throttle controller, and the cylinder operator so that during any transition from operation with a first number of activated cylinders to operation with a second number of activated cylinders, the processor will alter the spark advance and control the amount of air entering the engine cylinders so that the torque output of the engine will remain relatively unchanged during the transition.

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