Recirculated exhaust gas quantity control apparatus for internal

Details Recirculated exhaust gas quantity control apparatus for internal Recirculated exhaust gas quantity control apparatus for internal

1987-01-27

1989-01-03

Hart, Douglas

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

123479, F02M 2506

Patent

active

047949031

ABSTRACT:
The recirculated exhaust gas quantity control apparatus of the present invention is provided with an oxygen sensor at the down stream side of the opening of the exhaust gas recirculating passage to an air intake passage. By detecting the oxygen concentration of mixture gas containing fresh air and exhaust gas being fed to the internal combustion engine, the control apparatus of the present invention constantly checks whether the abnormal condition of the recirculated exhaust gas quantity, in other words, the control apparatus itself, occurs or not.

REFERENCES:
patent: 3925989 (1975-12-01), Pustelnik
patent: 4005689 (1977-02-01), Barnard
patent: 4168683 (1979-09-01), Hata et al.
patent: 4375800 (1983-03-01), Otsuka
patent: 4433666 (1984-02-01), Masaki
patent: 4541398 (1985-09-01), Kishi
patent: 4614175 (1986-09-01), Asayama

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