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:
Aug. 24, 2004
Filed:
Sep. 20, 2002
Applicant:
Inventors:
Xiaoguo Tang, Canton, MI (US);
Joseph Robert Theis, Rockwood, MI (US);
Robert Jay Natkin, Canton, MI (US);
Siamak Hashemi, Farmington Hills, MI (US);
William F. Stockhausen, Northville, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 ;
U.S. Cl.
CPC ...
F01N 3/00 ;
Abstract
A hydrogen fueled reciprocating spark ignition engine includes a fuel system for providing gaseous hydrogen to the cylinders of the engine and a lean NOx trap coupled to the engine for treating the engine's exhaust. An EGR system provides recirculated exhaust gas to the engine, and a controller operates the fuel system and EGR system during periodic purging of the lean NOx trap such that the engine is operated fuel rich, with the mass of EGR approximating 40%-80% of the mass of air and fuel.