Knock mitigation and cylinder balancing in an internal combustion engine

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United States of America Patent

PATENT NO 11131265
SERIAL NO

16432641

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Abstract

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An engine control system comprises a balancing arrangement together with a knock mitigation controller configured to implement a knock mitigation procedure wherein an offset input value (VI) is applied to the balancing algorithm. The offset input value (VI) may cause the balancing algorithm to adjust the control output (O1) for the respective one of the combustion chambers to progressively vary the fuel supply or ignition timing for the affected cylinder to mitigate the knock condition. Alternatively, the controller may generate an offset output value (VO) to more rapidly vary the fuel supply or ignition timing, with the offset input value (VI) being selected for example to compensate for the resulting change in the control input (I1) from the cylinder to the balancing algorithm, or to provide additional, more gradual adjustment to further mitigate the knock condition.

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Patent Owner(s)

Patent OwnerAddress
CATERPILLAR MOTOREN GMBH & CO KG24159 KIEL

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chakrabarty, Aradhita Peterborough, GB 1 1
Fiveland, Scott Peoria, US 8 108
Marscheider, Hannes Kiel, DE 5 7
Schmidt, Andre Kiel, DE 22 57
Sixel, Eike Kiel, DE 6 10
Wester, Daniel Kiel, DE 9 34

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