Exhaust gas control apparatus for internal combustion engine

Details Exhaust gas control apparatus for internal combustion engine Exhaust gas control apparatus for internal combustion engine

2005-07-07

2008-11-04

Tran, Binh Q (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S278000, C060S280000, C060S295000

Reexamination Certificate

active

07444804

ABSTRACT:
In an exhaust gas control apparatus for an internal combustion engine, in a case where an internal combustion engine is in a high load operating state while a PM trapping ability forcible recovery process for a particulate filter is being performed, EGR gas is caused to flow back from a portion downstream of the particulate filter in an exhaust passage to a portion upstream of a compressor housing in an intake passage, whereby the EGR gas is cooled by an intercooler. In a case where the internal combustion engine is in a low load operating state while the PM trapping ability forcible recovery process is being performed, the EGR gas is caused to flow back from the portion downstream of the particulate filter in the exhaust passage to a portion downstream of the intercooler in the intake passage, whereby the EGR gas is prevented from being unnecessarily cooled.

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