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:
May. 11, 2004
Filed:
Feb. 20, 2002
Applicant:
Inventors:
Abdolreza Fallahi, Pinner, GB;
Martin A P Sykes, Gillingham, GB;
Assignee:
Delphi Technologies, Inc., Troy, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 4/140 ; G01M 1/500 ;
U.S. Cl.
CPC ...
F02D 4/140 ; G01M 1/500 ;
Abstract
A control method for controlling the timing of fuel injection in a fuelling system for an engine comprising a fuel injector supplied with fuel from a source of fuel at high pressure, comprises varying a drive current which is supplied to the fuel injector at a first time so as to initiate or terminate a primary injection of fuel and monitoring the pressure of fuel within the source so as to detect when a variation in fuel pressure occurs. A time delay is measured, which represents the difference in time between the first time and a second, later time at which a variation in fuel pressure within the source is detected.