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. 14, 2009
Filed:
Mar. 22, 2005
Applicant:
Johan Remmelgas, Torslanda, SE;
Inventor:
Johan Remmelgas, Torslanda, SE;
Assignee:
Volvo Lastvagna AB, Gothenburg, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 37/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method in an internal combustion engine for controlling a fuel injector of the unit injector type which includes a plunger that is driven by a rotating camshaft and during a working stroke generates a hydraulic pressure increase in the fuel. Pressure build-up is regulated by a spill valve the injection sequence is regulated by a needle control valve. The spill valve and the needle control valve are regulated in such a way that additional plunger retardation force is produced in a part of a working stroke in addition to the normal retardation force that is produced by the plunger return spring and the flow resistance in the injector.