Electromagnetic vacuum switching valve for use in an exhaust gas

Details Electromagnetic vacuum switching valve for use in an exhaust gas Electromagnetic vacuum switching valve for use in an exhaust gas

1977-09-26

1979-06-19

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Having means analyzing composition of exhaust gas

60290, F01N 315

Patent

active

041582896

ABSTRACT:
An electromagnetic type vacuum switching valve adapted for connecting a vacuum actuator of an exhaust gas cleaning apparatus to a vacuum signal port in an intake manifold of an internal combustion engine or to the atmosphere. The valve is provided therein with an orifice means for controlling the rate of introducing the vacuum signal or the rate of introducing the atmospheric air pressure signal, and with a filter means for preventing dust in the atmosphere from entering into the engine.

REFERENCES:
patent: 3919843 (1975-11-01), Arnaud
patent: 3962867 (1976-06-01), Ikeura

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