The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 2006
Filed:
Jul. 12, 2004
Zhengbai Liu, Naperville, IL (US);
Puning Wei, Naperville, IL (US);
Zhengbai Liu, Naperville, IL (US);
Puning Wei, Naperville, IL (US);
International Engine Intellectual Property Company, LLC, Warrenville, IL (US);
Abstract
A compression ignition engine () for a motor vehicle has a control system () for processing data, one or more combustion chambers (), and fuel injectors () for injecting fuel into the chambers. The control system controls lean-rich modulation of fueling using independent maps. One set of maps is a set of lean fueling maps, and another set is a set of rich fueling maps. The strategy is represented by a flow diagram () and is useful in regenerating a NOadsorber catalyst () in the engine exhaust system () in a manner that controls torque so that the regeneration process is transparent to the operator of the vehicle.