Patent ID: 9482202
Filing Date: 2016-11-01
CPC Classification: F02D,F02P,Y02T

Claim Text:
1. A method for mitigating detonation and managing torque in a spark ignition internal combustion engine operated in a skip fire manner, the engine having a plurality of working chambers, the method comprising: operating the working chambers of the engine in a skip fire manner to deliver a desired torque based on a firing fraction; detecting one or more detonations in a working chamber of the engine; in response to the detection of the one or more detonations, retarding spark timing for one or more of the working chambers; automatically increasing the firing fraction used to operate the engine such that the increased firing fraction helps compensate for torque lost due to the retarding of the spark timing; and operating the working chambers of the engine in a skip fire manner based on the increased firing fraction to deliver the desired torque.