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Patent Searching and Data


Title:
A GEAR SHIFT METHOD FOR AN AUTOMATIC STEP GEARBOX OF A VEHICLE
Document Type and Number:
WIPO Patent Application WO/2010/006478
Kind Code:
A1
Abstract:
A gear shift method for an automatic step gearbox of a vehicle involves inputting an engine torque to a high-speed shift or a middle-speed shift directly. According to the vehicle speed and a burthen of an engine, the speed is changed in positive direction to enter to the high-speed shift or is changed in reverse direction to return to the low-speed shift through the gearbox. The automatic gearbox utilizes the method to cancel hydro-transmitter and hydraulic electric controlling system.

Inventors:
HUANG, Zhaohuan (24 Tiantao Road, Nanning, Guangxi 2, 530022, CN)
Application Number:
CN2008/071666
Publication Date:
January 21, 2010
Filing Date:
July 17, 2008
Export Citation:
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Assignee:
HUANG, Zhaohuan (24 Tiantao Road, Nanning, Guangxi 2, 530022, CN)
International Classes:
F16H61/00; F16H59/14
Foreign References:
CN101240844A2008-08-13
CN1393355A2003-01-29
CN1971088A2007-05-30
US5070747A1991-12-10
US5522779A1996-06-04
US5938712A1999-08-17
JPH04100740A1992-04-02
Other References:
See also references of EP 2309153A1
None
Attorney, Agent or Firm:
YIN INT'L IP FIRM (301 Daolong Business Center, 13 Huayuan Road Hiandian District, Beijing 8, 100088, CN)
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