Engine system

Details Engine system Engine system

F - Mech Eng,Light,Heat,Weapons

02

M

123/98.02

F02M 25/06 (2006.01) F02D 21/08 (2006.01) F02M 25/07 (2006.01)

Patent

CA 1077357

ABSTRACT OF THE DISCLOSURE Disclosed herein is an engine system which comprises an internal combustion engine, an air admission system to admit scavenging air, under pressure, into engine cylinder through an additional intake valve and an EGR system. The air admission system includes an air pump and an EGR conduit of the EGR system having an inlet end connected to the engine exhaust conduit and an outlet end connected to the air admission system upstream of the air pump to effect admission of re- circulated exhaust gas through additional intake valve together with scavenging air. With this EGR system and the replacement of residual gas with scavenging air, the rate of exhaust gas in engine cylinder upon ignition is kept substantially constant over varying partial loads. - 1 -

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