Engine control system

Details Engine control system Engine control system

1988-02-02

1990-07-24

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

123417, 123494, 606052, F02M 2506

Patent

active

049428608

ABSTRACT:
An engine control system having an oxygen density sensor arranged in an intake system at a position downstream of a throttle valve for detecting the amount of air newly introduced into the engine. The sensor is a limit electric current detection type capable of detecting a continuously changing density of the oxygen. An amount of fuel to be injected is calculated in accordance with the output level of the sensor by using mapped data of the output level of the sensor signal. A precise detection of new air is made possible while maintaining the advantages of the known D-J system. An ignition timing also may be calculated by the signal from the oxygen sensor.

REFERENCES:
patent: 4005689 (1977-02-01), Barnard
patent: 4108122 (1978-08-01), Barnard
patent: 4191144 (1980-03-01), Nohira et al.
patent: 4300516 (1981-11-01), Hayakawa
patent: 4399791 (1983-08-01), Kobayashi et al.
patent: 4426986 (1984-01-01), Muller et al.
patent: 4471745 (1984-09-01), Yoshioka et al.
patent: 4614175 (1986-09-01), Asayama
patent: 4705009 (1987-11-01), Asayama
patent: 4727849 (1988-03-01), Nishida et al.

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