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:
Jun. 22, 2010
Filed:
Nov. 17, 2004
Krister Fredriksson, Kyrkesund, SE;
Fredrik Wattwil, Landvetter, SE;
Sven-ake Hurtig Ahlinder, Sävedalen, SE;
Krister Fredriksson, Kyrkesund, SE;
Fredrik Wattwil, Landvetter, SE;
Sven-Ake Hurtig Ahlinder, Sävedalen, SE;
Volvo Lastvagnar AB, Göteborg, SE;
Abstract
A method for producing a value T being representative of the mean engine torque generated on a crankshaft of an internal combustion engine includes the steps of producing a speed vector including values being representative of instantaneous speeds of the engine during a sampling period, determining a mean engine speed n during said sampling period from the speed vector, determining a value Px, being representative of the frequency contribution of the speed vector at the frequency x*n, where x is a pre-selected order, and producing a value T being representative of the mean engine torque on the crankshaft during said sampling period, wherein T is derived from a mathematical expression including a polynomial having at least a term k*n*Px, where k is a polynomial constant. A device for producing a value T is also disclosed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile