Feedback control system for gas flow in internal combustion engi

Details Feedback control system for gas flow in internal combustion engi Feedback control system for gas flow in internal combustion engi

1978-03-15

1980-01-29

Burns, Wendell E.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

60307, F02M 2506, F01N 310

Patent

active

041856040

ABSTRACT:
A feedback control system for controlling the flow rate of a gas which is either drawn from or introduced into an exhaust passage of an internal combustion engine for the purpose of lessening pollutants in the exhaust gas. The control system is embodied either as an exhaust gas recirculation control system or a secondary air injection control system and in either case comprises an electrically operated flow control valve, a control circuit to provide a control signal to the control valve based on input signals representing the engine operating condition so as to establish an optimum flow rate, and an electrostatic type flow rate detector which has the ability of forming ions in the gas to provide a feedback signal on an electrical principle.

REFERENCES:
patent: 3712065 (1973-01-01), Hurst
patent: 3779222 (1973-12-01), Lorenz
patent: 3863615 (1975-02-01), Pagdin
patent: 3885540 (1975-05-01), Stadler
patent: 3948236 (1976-04-01), Nartowski et al.
patent: 4060065 (1977-11-01), Hata et al.
patent: 4071003 (1978-01-01), Aono
patent: 4085586 (1978-04-01), Shibata
patent: 4130098 (1978-12-01), Linder et al.
patent: 4147143 (1979-04-01), Harada

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