Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1977-12-23
1979-05-22
Myhre, Charles J.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123 32EA, 60276, F02B 3300, F01N 300
Patent
active
041553357
ABSTRACT:
The variation range defined between the maximum and the minimum output voltages of a gas sensor in the exhaust passage is detected and compared with a reference signal which can have hysterisis characteristics. Engine operational parameters are utilized to disable and/or reactivate the system as well as the sensed sensor response, while the air-fuel ratio can be arbitrarily varied to test if the sensor is below an effective working temperature and reactivate the system.
REFERENCES:
patent: 3895611 (1975-07-01), Endo et al.
patent: 3939654 (1976-02-01), Creps
patent: 3986352 (1976-10-01), Casey
patent: 4026257 (1977-05-01), Fenn
patent: 4027637 (1977-06-01), Aono
patent: 4029061 (1977-06-01), Asano
patent: 4057042 (1977-11-01), Aono
patent: 4075982 (1978-02-01), Asano et al.
patent: 4088095 (1978-05-01), Aono
patent: 4089313 (1978-05-01), Asano et al.
patent: 4112880 (1978-09-01), Asano et al.
Asano Masaharu
Hosaka Akio
Adams Bruce L.
Burns Robert E.
Lobato Emmanuel J.
Myhre Charles J.
Nelli R. A.
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