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:
Apr. 11, 2017
Filed:
Sep. 20, 2012
Applicant:
Delphi Automotive Systems Luxembourg SA, Bascharage, LU;
Inventor:
Francois Ravenda, Longwy, FR;
Assignee:
Delphi Automotive Systems Luxembourg SA, Luxembourg, LU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/20 (2006.01);
U.S. Cl.
CPC ...
F02D 41/20 (2013.01); F02D 2041/2027 (2013.01); F02D 2041/2037 (2013.01); F02D 2041/2058 (2013.01); F02D 2041/2062 (2013.01);
Abstract
A method is provided for determining the velocity of a pintle assembly in a solenoid fuel injector during a closing stroke of the pintle assembly, such that a braking step is performed during the closing stroke, which includes operating an injector driver with a current regulator to establish a braking current in the solenoid coil. The velocity of the pintle assembly is derived from the duty-cycle of the current regulator during the braking step. A method of operating a solenoid fuel injector, in particular for gaseous fuel, using the so-determined pintle velocity is also provided.