Title:
変速装置
Document Type and Number:
Japanese Patent JP2006508308
Kind Code:
A
Abstract:
A gearshifting unit for a vehicle transmission (6) comprising a main transmission part (10) manually shifted by the vehicle driver using a gearshift lever (16) and one range change group transmission (14) shifted by valves (44, 46). The gearshifts are manually preselectable by the vehicle driver using a gearshift lever (16), the same as a power assistance device (74) for shifting the gear steps in the main transmission part (10) and one electronic control device (20) which actuates the valves (44, 46). In a method for reducing the power assistance, a neutral position is detected in the manually shifting main transmission part (10) and once the neutral position is determined, the gearshift begins in the range change group transmission part (14) and the power assistance is engaged with a delay.
Inventors:
Dieter, Fisher
Claus, Speet
Claus, Speet
Application Number:
JP2004554428A
Publication Date:
March 09, 2006
Filing Date:
November 22, 2003
Export Citation:
Assignee:
ZF FRIEDRICHSHAFEN AG
International Classes:
F16H61/04; F16H61/08; F16H61/28; F16H61/70; F16H59/04; F16H59/40; F16H59/68; F16H59/72; F16H61/682
Domestic Patent References:
| JP2002227980A | 2002-08-14 | |||
| JP2739121B2 | 1998-04-08 |
Foreign References:
| WO2001096764A1 | 2001-12-20 |
Attorney, Agent or Firm:
Kenji Yoshitake
Hiroyuki Nagai
Junpei Okada
Hirohito Katsunuma
Kensuke Miyakoshi
Hiroyuki Nagai
Junpei Okada
Hirohito Katsunuma
Kensuke Miyakoshi