Patent · US Expired

Method and system for the reduction of the jerk caused by range shifting of a CVT transmission with power division

US7371204B2 · kind B2 · utility

5Cited by

6References

5Claims

0Family size

Assignee

LuK Lamellen und Kupplungsbau Beteiligungs KG · DE

Inventors

Michael Reuschel · Ottersweier, DE
Martin Vorhnehm · Bogen, DE
Christian Lauinger · Baden-Baden, DE
Bernhard Walter · Oberkirch, DE

Key dates

Filing date	Mar 21, 2005
Grant date	May 13, 2008
Priority date	—
Expiry date	Jun 29, 2025

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2037/088
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A method and a system for reducing a jerk produced by the range shift of a transmission with a power division arrangement. The transmission includes a variable speed drive in the form of a continuously variable transmission, and a pair of planetary gear sets and a pair of shift clutches to enable power to be divided between two branches within the transmission. During a range shift between two operating ranges the variable speed drive is acted upon by a short-term transmission ratio adjustment impulse in such a way that a cancellation jerk caused thereby the adjustment impulse weakens the jerk caused by the range shift.

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