Engine with EGR system

Details Engine with EGR system Engine with EGR system

2007-10-25

2009-10-06

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

C123S568120

Reexamination Certificate

active

07597089

ABSTRACT:
A 4-stroke cycle engine has an EGR system equipped with a particulate filter, an external EGR system, and an exhaust valve sub-lift type internal EGR system. With the engine, reduction of NOx emission by EGR can be achieved without incurring a deterioration in engine durability by enabling operation of the engine with the proper EGR rate over all operating ranges of the engine by making it possible to compensate for reduction in EGR amounts due to a reduced DPF pressure difference which occurs when the recovering operation of the DPF is performed.

REFERENCES:
patent: 2005/0022519 (2005-02-01), Shirakawa
patent: 2005/0027431 (2005-02-01), Todoroki et al.
patent: 2006/0112679 (2006-06-01), Kojima et al.
patent: 07-133726 (1995-05-01), None
patent: 10-252512 (1998-09-01), None
patent: 2000-204984 (2000-07-01), None
patent: 2006-226205 (2006-08-01), None

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