Control system for ignition timing of engine

Details Control system for ignition timing of engine Control system for ignition timing of engine

1975-08-06

1978-01-17

Lazarus, Ronald H.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02P 504

Patent

active

040686345

ABSTRACT:
Timing control mechanism for an internal combustion engine employs a vacuum chamber connected to a solenoid valve operated by a thermal switch responsive to engine temperature. The solenoid valve connects the vacuum chamber to one of two vacuum outlets connected to the engine intake passage. The first of the outlets is positioned adjacent and upstream from the throttle valve and the second of the outlets is positioned downstream from the throttle valve. The passage from the first outlet to the solenoid valve contains orifice means to restrict flow and also contains a check valve in parallel with the orifice means to permit flow toward the solenoid valve. The passage from the second vacuum outlet contains a check valve preventing flow toward the solenoid valve.

REFERENCES:
patent: 2702028 (1955-02-01), Gintling
patent: 3301242 (1967-01-01), Candelise
patent: 3400698 (1968-09-01), Kelly
patent: 3638626 (1972-02-01), Marshall
patent: 3727596 (1973-04-01), Panhard
patent: 3800758 (1974-04-01), Sutherland
patent: 3812832 (1974-05-01), Scott

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