Internal-combustion engines – Spark ignition timing control – Electronic control
Patent
1982-12-16
1985-05-14
Cox, Ronald B.
Internal-combustion engines
Spark ignition timing control
Electronic control
123568, 123588, 123328, F02P 504
Patent
active
045165513
ABSTRACT:
A control system for ignition timing and exhaust gas recirculation which includes a vacuum controller operated by a power source of negative pressure to advance the ignition timing, an EGR valve operated by a power source of negative pressure to recirculate the exhaust gas, a temperature sensing valve sensing an engine temperature which introduces atmosphere to the vacuum controller as well as to the EGR valve when the engine temperature is low, a pressure control valve which introduces the atmosphere by a flow ratio substantially in inverse proportion to a pressure of the exhaust gas, and a negative pressure line which introduces a negative pressure at a portion in a carburetor at an upstream side from a throttle valve to the vacuum controller and the EGR valve, whereby the vacuum controller and the EGR valve are controlled in connection with each other.
REFERENCES:
patent: 4186697 (1980-02-01), Yasuda
patent: 4191143 (1980-03-01), Yuuki
patent: 4191147 (1980-03-01), Yuuki
patent: 4220126 (1980-09-01), Tomita
patent: 4248193 (1981-02-01), Choma
patent: 4267809 (1981-05-01), Mase
patent: 4334515 (1982-06-01), Otsuka
patent: 4335690 (1982-06-01), Hosokawa
patent: 4369752 (1983-01-01), Ito
Cox Ronald B.
Toyota Jidosha & Kabushiki Kaisha
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