Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1978-02-21
1979-08-21
Burns, Wendell E.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
F02M 2506
Patent
active
041649184
ABSTRACT:
A transducer regulates an operating pressure which positions an exhaust gas recirculation control valve pintle to provide exhaust gas recirculation at rates which maintain the pressure in the recirculation passage upstream of the valve pintle 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 has a pair of current carrying coils which create a bias affecting the reference pressure; the current is adjusted for selected operating conditions to change the reference pressure and thereby change the proportion of exhaust gas recirculation to induction air flow.
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Burns Wendell E.
General Motors Corporation
Veenstra C. K.
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