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U.S. Department of Energy
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Spark ignition timing control system for an internal combustion engine with retarding means responsive to transmission gear shifting

Patent ·
OSTI ID:6777985
A spark ignition timing control system is described for an internal combustion engine of a vehicle having a transmission comprising: an ignition device for causing spark ignition of the engine at a controlled timing; a first sensor for detecting engine speed and producing a first sensor signal which has a value proportional to the detected engine speed; a second sensor for detecting a knocking condition of the engine and producing a second sensor signal having a value proportional to the magnitude of engine knocking; a third sensor for detecting the first sensor signal value indicative of the engine speed at which a shifting-up of a gear position of the transmission occurs and producing a third sensor signal when the transmission gear upshifting first sensor signal value is detected; and control means for controlling a spark advance angle of the spark ignition based on the first sensor signal value and second sensor signal value, which control means is responsive to the third sensor signal to retard the spark advance angle.
Assignee:
Nissan Motor Co., Ltd., Yokohama City
Patent Number(s):
US 4630583
OSTI ID:
6777985
Country of Publication:
United States
Language:
English