Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1977-12-05
1979-03-06
Burns, Wendell E.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
F02B 2506
Patent
active
041424956
ABSTRACT:
A motor vehicle combustion engine has an exhaust gas recirculation system in which the flow of recirculated exhaust gas is controlled through an orifice having exhaust back pressure on one side and a control pressure on the other, determined by an EGR valve. Apparatus is provided for sensing the control pressure and controlling the EGR valve in response to the sensed control pressure, a predetermined desired control pressure and a reference. At selected occurrences of engine idle, the EGR valve is closed and the sensed control pressure, which at such times is substantially the same as the exhaust back pressure at idle, is stored for use as the reference between said occurrences.
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patent: 3834366 (1974-09-01), Kingsbury
patent: 4018198 (1977-04-01), Williams
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: 4069798 (1978-01-01), Thornburgh
patent: 4071003 (1978-01-01), Aono
patent: 4090482 (1978-05-01), Yoshida
patent: 4092960 (1978-06-01), Nohira et al.
patent: 4094287 (1978-06-01), Nohira
Burns Wendell E.
General Motors Corporation
Sigler Robert M.
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