Time delay apparatus for an exhaust gas recirculation controller

Details Time delay apparatus for an exhaust gas recirculation controller Time delay apparatus for an exhaust gas recirculation controller

1977-11-03

1979-02-06

Vrablik, John J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02M 2506

Patent

active

041378806

ABSTRACT:
Time delay valve means are provided in a conduit through which an actuating vacuum signal is supplied to a valve for controlling the recirculation of exhaust gases in an internal combustion engine. The time delay valve means include a pressure responsive vacuum relay valve for opening and closing the conduit in response to an increase in engine intake manifold vacuum to a predetermined level and an orifice for increasing the time required after engine starting for the predetermined level of intake manifold vacuum to be applied to the vacuum relay valve.

REFERENCES:
patent: 3739797 (1973-06-01), Caldwell
patent: 3818880 (1974-06-01), Dawson et al.
patent: 3977381 (1976-08-01), Fujikawa et al.
patent: 3996905 (1976-12-01), Dawson

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