Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1977-03-30
1979-11-27
Engle, Samuel W.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123119EC, 123 32EE, F01N 315, F02M 3700
Patent
active
041755219
ABSTRACT:
Additional air is supplied through an additional air passage having a bypass valve into the main air passage of an internal combustion engine downstream of the throttle valve, and the amount of the additional air is controlled in accordance with the opening of the bypass valve. The direction of rotation of a bypass valve driving pulse motor is controlled in accordance with the output signal of an air-fuel mixture ratio sensor mounted in the exhaust system of the engine. Also the rotational speed of the pulse motor is varied in accordance with the operating conditions of the engine during warm-up operation.
REFERENCES:
patent: 3817225 (1974-09-01), Priegel
patent: 3827237 (1974-08-01), Linder et al.
patent: 3921612 (1975-10-01), Aono
patent: 4023357 (1977-05-01), Masaki
patent: 4052968 (1977-10-01), Hattori et al.
patent: 4061118 (1977-12-01), Kiyota
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patent: 4075835 (1978-02-01), Hattori et al.
patent: 4077207 (1978-03-01), Hattori et al.
patent: 4084560 (1978-04-01), Hattori et al.
patent: 4084563 (1978-04-01), Hattori et al.
Fukuda Tamotsu
Hattori Tadashi
Nakase Takamichi
Takata Akira
Cangialosi S. A.
Engle Samuel W.
Nippon Soken Inc.
Toyota Jidosha Kogyo Kabushiki Kaisha
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