Internal-combustion engines – Combustion chamber means combined with air-fuel mixture...
Patent
1989-03-28
1990-10-30
Nelli, Raymond A.
Internal-combustion engines
Combustion chamber means combined with air-fuel mixture...
F02P 2300, F02P 500
Patent
active
049661175
ABSTRACT:
A system and method for controlling an ignition timing for a vehicular internal combustion engine are disclosed in which a feedback correction quantity for the ignition timing value is calculated on the basis of a result of detection of at least one of an occurrence of engine knocking and a position at which a combustion pressure becomes maximum and the feedback correction quantity is added to a basic ignition timing angle value based on engine operating conditions to determine a final ignition timing angle value. The feedback correction quantity is limited by a limit value set so as to be varied with the increase of a vehicle speed when the feedback correction quantity is advanced toward an advance angle value. The limit value is retarded when the vehicle speed is low, thus suppressing a combustion noise. On the other hand, the limit value is advanced when the vehicle speed is high, thus achieving the engine output torque and fuel economy.
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Nelli Raymond A.
Nissan Motor Company Limited
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