Patent · US Active

Method for determination of numbers of gear steps

US8880304B2 · kind B2 · utility

0Cited by

5References

15Claims

0Family size

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	Nov 4, 2014
Priority date	—
Expiry date	Feb 20, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2061/0218
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A method for determining numbers of gear steps N for a gearbox in a motor vehicle. The vehicle has an engine connected to drive the gearbox. The numbers of gear steps N is the number of downshifts or the number of upshifts which the gearbox effects at an upshift point or a downshift point. A downshift point represents a first engine speed at which the gearbox effects a downshift. An upshift point represents a second engine speed at which the gearbox effects an upshift. The numbers of gear steps N are determined on the basis of a predicted acceleration a for the motor vehicle during a time period T. The invention relates also to a system, a motor vehicle, a computer program and a computer program product thereof for performing the method.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.