Engine intake system for controlling internal exhaust gas recirc

Details Engine intake system for controlling internal exhaust gas recirc Engine intake system for controlling internal exhaust gas recirc

1997-10-07

1999-11-16

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

12318453, F02M 2507, F02M 4708

Patent

active

059838728

ABSTRACT:
An intake system for an engine is disclosed. The intake system is arranged to selectively provide exhaust gas recirculation for improving emission quality. The engine has at least one combustion chamber and an exhaust valve controlled exhaust passage leading from the combustion chamber for routing exhaust therefrom. The intake system includes an intake passage leading to the combustion chamber, an intake valve arranged to control the flow of air into the combustion chamber and a throttle valve positioned in the intake passage upstream of the intake valve. A mechanism is provided for changing the volume of the intake passage between the throttle valve and intake valve for selectively inducing exhaust gas recirculation during an opening overlap of the exhaust and intake valves.

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