Internal-combustion engines – Spark ignition timing control – Electronic control
Patent
1986-06-02
1988-01-12
Cox, Ronald B.
Internal-combustion engines
Spark ignition timing control
Electronic control
123198R, 123415, F02P 504
Patent
active
047183810
ABSTRACT:
An apparatus for electrically controlling the spark advance of selected cylinders of a multicylinder engine so that the spark of the selected cylinders is advanced beyond others of the cylinders. For example, the selected cylinders may be advanced beyond normal operational advance to increase combustion chamber temperatures and pressures for a relatively short period so as to clean the surfaces of the combustion chamber. The cylinders which are advanced are changed in sequence or at random so that all of the cylinders are cleaned. The system may also be used to control the spark advance of the cylinders to provide differing advances for the respective cylinders to accommodate differences in operational conditions at the cylinders.
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Chevrolet's 1937 Shop Manual, Chevrolet Motor Division, Jan. 1937, p. 128, Operator's Manual for 1937 Chevrolet Passenger Cars, p. 7.
Lennington John W.
McDougal John A.
Cox Ronald B.
McDougal John A.
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