Internal combustion engine exhaust passage structure

Details Internal combustion engine exhaust passage structure Internal combustion engine exhaust passage structure

F - Mech Eng,Light,Heat,Weapons

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F02F 1/42 (2006.01) B01D 53/94 (2006.01) F01N 3/20 (2006.01) F02D 17/00 (2006.01) F02D 17/02 (2006.01) F02D 21/08 (2006.01) F02M 25/07 (2006.01) F01N 13/04 (2010.01) F02B 3/06 (2006.01)

Patent

CA 1140413

ABSTRACT OF THE DISCLOSURE An internal combustion engine is disclosed which comprises a plurality of cylinders split into first and second groups, means responsive to engine low load condi- tions for cutting off flow of fuel and fresh air to the second group of cylinders, an exhaust passage provided at its downstream end with a catalyzer, a partition extending through the exhaust passage to the vicinity of the catalyzer to divide the exhaust passage into two passages, one connecting with the first group of cylinders, the other connecting with the second group of cylinders, an EGR passage bypassing the second group of cylinders for exhaust gas recirculation, and an EGR valve provided in the EGR passage and adapted to open the same in response to engine low load conditions,

341092

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