Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Reexamination Certificate
2007-04-09
2011-11-15
Denion, Thomas (Department: 3748)
Power plants
Internal combustion engine with treatment or handling of...
By means producing a chemical reaction of a component of the...
C060S274000, C060S286000, C060S295000, C060S299000
Reexamination Certificate
active
08056321
ABSTRACT:
An exhaust gas purification system provided with an exhaust gas purification device, such as a NOx occlusion-reduction catalyst, in an exhaust passage of an internal combustion engine for purifying exhaust gas when the air-fuel ratio of the exhaust gas is in a lean state, and recovering purification ability when in a rich state. The system prevents highly dense, uncombusted fuel from acting as a binder that causes soot, together with the uncombusted fuel, to clog an EGR cooler in an EGR passage. An uncombusted fuel adsorption device for adsorbing uncombusted fuel is provided upstream of the EGR cooler for adsorbing uncombusted fuel passing through the EGR passage during a rich control.
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Gabe Masashi
Nagaoka Daiji
Bogue Jesse
Denion Thomas
Isuzu Motors Limited
Staas & Halsey , LLP
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