Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1976-08-04
1978-01-31
Burns, Wendell E.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
F02M 2506
Patent
active
040710033
ABSTRACT:
A control system comprising a flow control valve provided in an exhaust gas recirculation passage, an electromechanical valve-actuator for actuating the flow control valve and a control circuit including function generators and an adder, optionally combined with a multiplier, for producing a control signal to operate the valve-actuator. Each function generator receives a signal representing one of several variables related to the operational condition of the engine, e.g. the opening degree of the throttle valve and engine temperature, and produces an output signal indicating and corresponding to a desirable opening degree of the flow control valve based on the assigned variable. The output signals of the function generators are respectively modulated in amplitude according to the respective importance of the variables to the exhaust recirculation control and then combined together by the adder.
REFERENCES:
patent: 3872846 (1975-03-01), Taplin et al.
patent: 3925989 (1975-12-01), Pustelnik
patent: 3941105 (1976-03-01), Yagi et al.
patent: 3963011 (1976-06-01), Saito et al.
Adams Bruce L.
Burns Robert E.
Burns Wendell E.
Lobato Emmanuel J.
Nissan Motor Co,. Ltd.
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