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:
Aug. 14, 2001
Filed:
Nov. 05, 1999
Per Nestvall, Molndal, SE;
AB Volvo Penta, Goteborg, SE;
Abstract
A method for calibrating the injection time (&agr;) of a first fuel (,′) in a diesel engine (,). The method comprises the steps of feeding adjustment fluid (,) under pressure to an injection adjuster (,) which comprises an adjuster plunger (,). The diesel engine (,) is made to run at a constant speed (r). The adjuster plunger (,), which is coupled to a roller-bearing ring (,) for adjusting the injection time (&agr;) is adjusted with the aid of the pressure of the adjustment fluid (,). The fuel consumption of the diesel engine (,) is measured and the injection time (&agr;), when the fuel consumption converts from varying to being constant and/or vice versa, is recorded. The recorded injection time (&agr;) is compared with a predetermined injection time (&agr;,) and the injection adjuster (,) is calibrated by regulating the pressure of the adjustment fluid (,) so that the adjuster plunger (,) is set in a position which corresponds to an injection time (&agr;) which accords with the predetermined injection time (&agr;,).