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:
Mar. 06, 2018
Filed:
Dec. 14, 2014
Westport Power Inc., Vancouver, CA;
GM Global Technology Operations Llc, Detroit, MI (US);
Raymond Bzymek, Northville, MI (US);
Mark E. Dunn, Vancouver, CA;
Ning Wu, Vancouver, CA;
Dehong Zhang, Vancouver, CA;
Craig D. Marriott, Pontiac, MI (US);
Joshua D. Cowgill, Milford, MI (US);
Ben W. Moscherosch, Waterford, MI (US);
WESTPORT POWER INC., Vancouver, CA (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A technique for fuel system protection for an internal combustion engine includes introducing a directly injected fuel into a combustion chamber through a direct fuel injector, introducing a fumigated fuel upstream of an intake valve, selectively operating the internal combustion engine with at least one of the directly injected fuel and the fumigated fuel, determining a temperature of the direct fuel injector as a first function of engine operating parameters, and performing a temperature mitigation technique when the temperature rises above a first predetermined value such that the temperature is maintained below a second predetermined value.