Internal-combustion engines – Combustion chamber means combined with air-fuel mixture...
Patent
1988-09-16
1990-01-23
Wolfe, Willis R.
Internal-combustion engines
Combustion chamber means combined with air-fuel mixture...
73 35, F02P 514
Patent
active
048951218
ABSTRACT:
A method and apparatus is provided for measuring detonation in an internal combustion engine. Vibration sensors located on the engine send signals through a filter which is turned to the cavity resonance of the engine's cylinders. The peaks and valleys of the filtered signals are detected and ratiometrically compared one with another to determine the magnitude of detonation. The detonation information may be used by an engine control to retard timing in response to a predetemined level of detonation.
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Carr Douglas E.
King Kevin D.
McCoy Steven R.
Stevenson Thomas T.
Caterpillar Inc.
Muir Robert E.
Wolfe Willis R.
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