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:
Feb. 01, 2005
Filed:
Nov. 17, 2003
Songping Yu, Troy, MI (US);
Michael J. Cullen, Northville, MI (US);
Gary Lee Danhoff, Redford, MI (US);
Robert R. Jentz, Westland, MI (US);
Songping Yu, Troy, MI (US);
Michael J. Cullen, Northville, MI (US);
Gary Lee Danhoff, Redford, MI (US);
Robert R. Jentz, Westland, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
A method for determining EGR flow in an internal combustion engine, such flow being from an exhaust manifold of the engine to an intake manifold of the engine through an EGR valve. The method includes using information provided by a mass air flow sensor disposed upstream of an exhaust gas inlet to the intake manifold and information provided by an manifold absolute pressure sensor disposed downstream of such exhaust gas inlet to provide an indication of the flow of exhaust gas into the intake manifold through such inlet. The method compares such estimated exhaust gas flow into the intake manifold with a commanded exhaust gas flow to the EGR valve. With such method, a determination may be made as to whether the EGR valve is operating properly.