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:
Jul. 30, 2013
Applicant:
Delphi International Operations Luxembourg S.a.r.l., Bascharage, LU;
Inventor:
Martin A. P. Sykes, Rainham, GB;
Assignee:
Delphi International Operations Luxembourg SARL, Luxembourg, LU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/00 (2006.01); G01R 31/02 (2006.01); F02D 41/22 (2006.01); H01F 7/18 (2006.01); F01N 3/20 (2006.01); F01N 11/00 (2006.01); F02D 41/20 (2006.01);
U.S. Cl.
CPC ...
G01R 31/006 (2013.01); F01N 3/2066 (2013.01); F01N 11/00 (2013.01); F02D 41/20 (2013.01); F02D 41/221 (2013.01); G01R 31/025 (2013.01); H01F 7/1844 (2013.01); F01N 2550/05 (2013.01); F01N 2900/0422 (2013.01); F01N 2900/1821 (2013.01); F02D 2041/2034 (2013.01); F02D 2041/2041 (2013.01); F02D 2041/2051 (2013.01); F02D 2041/2058 (2013.01); F02D 2041/2068 (2013.01); F02D 2041/2089 (2013.01); Y02T 10/24 (2013.01); Y02T 10/40 (2013.01); Y02T 10/47 (2013.01);
Abstract
A diagnostic circuit arranged to measure an electrical characteristic in a drive circuit of a coil of a fluid injector and compare the measured electrical characteristic with another electrical characteristic to determine whether a PN junction is working to discharge electrical energy in the coil of the fluid injector, in particular a selective catalytic reduction dosing injector.