Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1978-04-19
1979-12-04
Burns, Wendell E.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
F02M 2506
Patent
active
041766350
ABSTRACT:
An exhaust gas recirculation system for an internal combustion engine of the back pressure control type wherein a back pressure chamber formed in a recirculation passage for recirculating exhaust gases is controlled to be substantially at atmospheric pressure by co-operation of a vacuum-operated diaphragm type exhaust gas recirculation control valve and a vacuum control valve which modifies the vacuum supplied to the exhaust gas recirculation control valve, wherein the system further includes a vacuum switching valve which selectively supplies intake manifold vacuum to a second diaphragm chamber of the exhaust gas recirculation control valve so as to close the control valve temporarily when the engine is decelerated.
REFERENCES:
patent: 3931813 (1976-01-01), Horie et al.
patent: 4031871 (1977-06-01), Hamanishi
patent: 4041917 (1977-08-01), Suzuki
patent: 4056084 (1977-11-01), Baumgartner
patent: 4069797 (1978-01-01), Nohira et al.
patent: 4092960 (1978-06-01), Nohira et al.
patent: 4128089 (1978-12-01), Tarimoto et al.
patent: 4137874 (1979-02-01), Otsubo et al.
Baika Toyokazu
Nakamura Norihiko
Toyama Noboru
Burns Wendell E.
Toyota Jidosha Kogyo Kabushiki Kaisha
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