Internal-combustion engines – Spark ignition timing control – Electronic control
Patent
1981-05-21
1984-01-03
Myhre, Charles J.
Internal-combustion engines
Spark ignition timing control
Electronic control
123418, 123422, F02P 504
Patent
active
044237146
ABSTRACT:
An internal combustion engine for a vehicle has a first device for generating an ignition signal causing the engine spark plug to fire at a predetermined timing schedule and at retarded timings relative to the predetermined schedule. A second device is provided for detecting all three of (1) a high engine speed condition, (2) a high load operating condition and (3) a condition in which a transmission gear arrangement is in a low speed gear position. The second device produces a signal when all three conditions are satisfied. A third device causes the first device to generate the ignition signal at the retarded timings in response to the signal from the second device, thereby effectively decreasing combustion noise due to a greater combustion pressure rise at low vehicle speeds during high engine speed and load operations.
REFERENCES:
patent: 3626455 (1971-12-01), Toda et al.
patent: 3718126 (1973-02-01), Oishi et al.
patent: 3779219 (1973-12-01), Saita
patent: 4144860 (1979-03-01), Muranaka et al.
Dolinar Andrew M.
Myhre Charles J.
Nissan Motor Company Limited
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