Electric exhaust gas recirculation valve

Details Electric exhaust gas recirculation valve Electric exhaust gas recirculation valve

1985-09-25

1987-06-23

Wolfe, Jr., Willis R.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

F02M 2506

Patent

active

046744649

ABSTRACT:
An electrically actuated EGR valve controls the recirculation of exhaust gases in an internal combustion engine. The EGR valve includes a step motor having a linearly moving motor shaft engaging a rod of a poppet valve for communicating an exhaust gas inlet port with an exhaust gas outlet port. An insulator and a cooling atmosphere chamber separate the step motor from the heat of the exhaust gases.

REFERENCES:
patent: 3774583 (1973-11-01), King
patent: 3925989 (1975-12-01), Pustelnik
patent: 4064851 (1977-12-01), Wessel
patent: 4412517 (1983-11-01), Kobashi et al.
patent: 4432331 (1984-02-01), Yasuhara
patent: 4561408 (1985-12-01), Jenkins

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