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:
Jul. 19, 2016
Filed:
Dec. 10, 2013
Applicants:
Robert Stack, Grand Blanc, MI (US);
Jonathan D Stoffer, Rochester Hills, MI (US);
Inventors:
Robert Stack, Grand Blanc, MI (US);
Jonathan D Stoffer, Rochester Hills, MI (US);
Assignee:
FCA US LLC, Auburn Hills, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D 41/22 (2006.01); F02M 65/00 (2006.01); F02D 41/12 (2006.01);
U.S. Cl.
CPC ...
F02D 41/222 (2013.01); F02D 41/123 (2013.01); F02M 65/003 (2013.01); F02D 2041/223 (2013.01); F02D 2041/228 (2013.01); F02D 2200/0602 (2013.01);
Abstract
A first computer-implemented diagnostic method can run in response to an imminent deceleration fuel cutoff (DFCO) event. A second computer-implemented diagnostic method can run on engine shutdown. Both diagnostic methods involve controlling fuel injectors and a fuel pump to make the fuel rail pressure change from a desired minimum to a desired maximum. Measurements from the fuel rail pressure sensor at these endpoints can then be used to detect a fault of the fuel rail pressure sensor. One or both diagnostic methods can be implemented.