Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1978-05-25
1979-12-25
Burns, Wendell E.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
F02M 2506
Patent
active
041800346
ABSTRACT:
A transducer creates an operating pressure that positions a control valve to provide exhaust gas recirculation at rates which maintain the control pressure in the recirculation passage between the valve and an orifice equal to a reference pressure; exhaust gas recirculation thus varies with engine exhaust backpressure and accordingly is substantially proportional to induction air flow. The transducer also varies the reference pressure inversely with exhaust backpressure, thereby causing a reduction in the control pressure and a corresponding increase in the proportion of exhaust gas recirculation to induction air flow upon an increase in induction air flow.
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Burns Wendell E.
General Motors Corporation
Veenstra C. K.
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