Method for internal combustion engine with exhaust...

Details Method for internal combustion engine with exhaust... Method for internal combustion engine with exhaust...

2005-09-15

2011-12-06

Tran, Binh Q (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

Material from exhaust structure fed to engine intake

C060S274000, C060S280000, C060S285000, C060S605200, C060S605100

Reexamination Certificate

active

08069650

ABSTRACT:
A method is provided for maintaining the heat in an exhaust after treatment system connected to the exhaust pipe of an internal combustion engine. The engine is used to propel a vehicle and is equipped with a valve-controlled EGR duct for the adjustable recirculation of exhaust gases from the exhaust side of the engine to its induction side. According to the invention, it is detected that neither the braking system nor the throttle control mechanism of the vehicle is activated and that the vehicle is being driven at a speed in excess of a predetermined value. After this, the gas flow through the EGR duct is regulated so that the gas flow to the exhaust aftertreatment system is reduced to a level which is less than about 50% of the gas flow to the exhaust aftertreatment system with shut-off EGR valve.

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International Search Report for corresponding International Application PCT/SE2005/001339.

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