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)
Patent
CA 1208997
EGR Control Systems for Diesel Engines Abstract An automotive vehicle having a diesel engine, a throttle system actuable to control the engine speed, a vacuum pump driven by the engine and forming, at least in part, a vacuum pressure source, and an EGR system. The EGR system comprises an EGR valve and a valve con- troller for governing the level of vacuum pressure com- municated to the EGR valve from the vacuum pressure source. The valve controller has a housing defining an output port for supplying operating pressure to the EGR valve, an input port communicating with the vacuum pres- sure source, and an input port communicating with ambi- ent atmospheric pressure. Regulator valving means in the housing includes a control member movable to control communication between the output port and the input ports to govern the valve operating vacuum pressure level. Throttle position responsive means exerts actu- ating force on the control member to alter the output pressure. The throttle position responsive means com- prises a lever connected to the throttle system, a cam supported by the housing and driven by the lever and a resiliently deflectable force transmitting element be- tween the cam and the control member for applying force to the control member depending on the position of the lever.
411803
Macrae & Co.
Piesche Gunter
LandOfFree
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