F - Mech Eng,Light,Heat,Weapons – 02 – M
Patent
F - Mech Eng,Light,Heat,Weapons
02
M
123/98.05
F02M 25/06 (2006.01) F02M 25/07 (2006.01)
Patent
CA 1067362
ABSTRACT OF THE DISCLOSURE An EGR control valve operating diaphragm unit operated by the difference between an exhaust gas pressure in a chamber interposed between the EGR control valve and a restriction provided in the EGR passageway upstream of the EGR control valve and a venturi vacuum in the engine intake passageway or a combination of an EGR control valve operating diaphragm unit operated by the difference between the atmospheric pressure and an engine suction vacuum and a pressure regulating valve controlling the flow of atmospheric air admitted for diluting the suction vacuum which diaphragm unit or combination operates the EGR control valve to reduce and increase the exhaust gas pressure in the chamber in the EGR passageway in accordance with increases and decreases in the venturi vacuum, respectively.
276012
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