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. 07, 2012
Filed:
Sep. 06, 2006
Anders Eriksson, Torslanda, SE;
Sixten Berglund, Torslanda, SE;
Anders Eriksson, Torslanda, SE;
Sixten Berglund, Torslanda, SE;
Volvo Lastvagnar AB, Göteborg, SE;
Abstract
A method for operating a semi-automatic or automatic manual transmission of a heavy truck when driving at idle speed. The method includes supplying fuel to the engine of the heavy truck at a rate that facilitates engine-idle operation. In another step, the method engages the automatic or semi-automatic transmission in a gear higher than the starting gear of the transmission and permits the truck to operate at a first substantially uniform driving velocity under engine-idle power. Depending upon traffic and environmental requirements which require a slower or higher speed, the driver downshifts or upshifts the semi-automatic or automatic transmission by depressing a control pedal of the truck and then drives the truck at a second substantially uniform driving velocity under engine-idle power. For a downshift, the second substantially uniform driving velocity is less than the first substantially uniform driving velocity. For an upshift, the second substantially uniform driving velocity is greater than the first substantially uniform driving velocity.