Ignition timing control system for internal combustion engines

Details Ignition timing control system for internal combustion engines Ignition timing control system for internal combustion engines

1978-03-28

1980-09-02

Myhre, Charles J.

Internal-combustion engines

Spark ignition timing control

Electronic control

123416, F02M 5200

Patent

active

042201250

ABSTRACT:
In normal load operating conditions of the engine, an ignition timing control unit produces an ignition timing signal in accordance with the rotation speed and intake negative pressure of the engine. In transitions, for example, from idling operation to normal load operation, and vice versa, an ignition timing delaying circuit in the ignition timing control unit produces a correction signal by detecting whether or not the throttle valve is fully closed. When the correction signal is produced, the ignition timing control unit produces corrected ignition timing signal so that, in the transient periods of operation, the ignition timing is gradually changed to a predetermined ignition timing.

REFERENCES:
patent: 3815500 (1974-06-01), Wahl et al.
patent: 3816717 (1974-06-01), Yoshida et al.
patent: 3835819 (1974-09-01), Anderson, Jr.
patent: 4003354 (1977-01-01), Canup
patent: 4073270 (1978-02-01), Endo

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