Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Reexamination Certificate
2006-11-22
2011-11-15
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...
C060S274000, C060S276000, C060S295000, C060S301000, C060S303000
Reexamination Certificate
active
08056323
ABSTRACT:
In an exhaust gas purification system provided with an exhaust gas purification device in an exhaust passage of an internal combustion engine, and at the same time, provided with a reductant supply means for supplying a reductant to the upstream side of this exhaust gas purification device, two or more of the oxygen concentration, the CO concentration, and the HC concentration of the exhaust gas detected by an exhaust gas component concentration detecting means are used as control parameters during the reductant supply control when the reductant is supplied into the exhaust gas flowing into the exhaust gas purification device. With this, the supply period and supply amount of the reductant can be optimized, and a decrease of fuel efficiency deterioration and suppression of deterioration of the quality of the components of the exhaust gas flowing into the atmosphere are attempted.
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Isuzu Motors Limited
Staas & Halsey , LLP
Tran Binh Q.
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