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. 10, 2012
Filed:
Aug. 19, 2010
Applicants:
John A. J. Griffiths, Vancouver, CA;
Olivier P. M. Lebastard, Burnaby, CA;
Inventors:
John A. J. Griffiths, Vancouver, CA;
Olivier P. M. Lebastard, Burnaby, CA;
Assignee:
Westport Power Inc., Vancouver, BC, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T 7/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus determine the fuel injection on-time to accurately meter fuel injected directly into the combustion chamber of a gaseous fuelled internal combustion engine. The fuel injection on-time is determined by interpolating between values retrieved from two of a plurality of predetermined look-up tables, which each define fuel injection on-time as a function of gaseous fuel rail pressure and fuelling amount. Each table corresponds to a fixed value of a third parameter that correlates to in-cylinder pressure.