Method for determination of numbers of gear steps

US8706365B2 · kind B2 · utility

Assignee

• Scania CV AB · SE

Inventors

• Fredrik Swartling · Malung, SE
• Anders Kjell · Ekerö, SE
• Tom Nyström · Malung, SE

Key dates

• Filing date: Sep 13, 2010
• Grant date: Apr 22, 2014
• Expiry date: Nov 14, 2030

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2061/0218
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A method for determination of numbers of gear steps for a gearbox in a motor vehicle which comprises an engine connected to drive a gearbox is disclosed. The numbers of gear steps are the number of downshifts or the number of upshifts which the gearbox respectively effects at an upshift point or a downshift point, a downshift point representing a first engine speed at which the gearbox effects a downshift, an upshift point representing a second engine speed at which the gearbox effects an upshift, and the numbers of gear steps being determined based on a predicted time period which the engine takes to change from a first engine speed to a second engine speed. A system, a motor vehicle, a computer program and a computer program product thereof for the method are also disclosed.