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. 20, 2004
Filed:
May. 16, 2002
Applicant:
Inventors:
William R. Robertson, Irondequoit, NY (US);
Sergio Eduardo Garcia, Webster, NY (US);
Craig A. Carlson, Honeoye Falls, NY (US);
Darrell W. Burleigh, Henrietta, NY (US);
Assignee:
Delphi Technologies, Inc., Troy, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 4/106 ;
U.S. Cl.
CPC ...
F02D 4/106 ;
Abstract
The present invention provides an improvement over conventional engine controls by adjusting engine air/fuel [AF] ratio, as a function of fuel volatility, during engine start and initial operation. It is comprised of three detection tests to determine the volatility of the fuel and provide compensation to the AF ratio in proportion to that volatility during engine crank and initial operation. The method includes compensating for incomplete fuel vaporization as a function of predicted intake valve temperature.