Knock suppression apparatus for an internal combustion engine

Details Knock suppression apparatus for an internal combustion engine Knock suppression apparatus for an internal combustion engine

1993-06-11

1994-03-22

Wolfe, Willis R.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

F02P 515

Patent

active

052954668

ABSTRACT:
A knock suppressing apparatus for an internal combustion engine includes knock sensing means for sensing knocking of an engine and lag angle calculating means responsive to the knock sensing means for calculating a lag angle when knocking is sensed. A basic ignition timing for the engine is calculated by a basic ignition timing calculating means based on an operating condition of the engine, and a load sensing means senses a transition of a load of the engine between a light load region and a heavy load region. A weighting means responsive to the load sensing means produces a weighting factor multiplies the lag angle by the weighting factor to obtain a corrected lag angle and changes the weighting factor, when the load sensing means senses a transition of the load, from its value prior to the transition to a new value in a plurality of steps. A final ignition timing calculating means calculates a final ignition timing for the engine based on the basic ignition timing and the corrected lag angle.

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