Title:
油圧-機械式変速装置の制御装置
Document Type and Number:
Japanese Patent JP4570418
Kind Code:
B2
Abstract:
A variable relief valve is inserted in a hydraulic piping for connecting a first pump/motor to a second pump/motor. The variable relief valve is controlled such that when shifting the transmission from forward to reverse or vice versa, a relief set pressure of the variable relief valve is reduced in response to switching of a forward/reverse shifting clutch mechanism and after completion of the switching of the forward/reverse shifting clutch mechanism, the relief set value is increased.
Inventors:
Masato Funato
Shunichi Okada
Shigeru Yamamoto
Tomohiro Nakagawa
Shunichi Okada
Shigeru Yamamoto
Tomohiro Nakagawa
Application Number:
JP2004236295A
Publication Date:
October 27, 2010
Filing Date:
August 16, 2004
Export Citation:
Assignee:
KOMATSU LTD.
International Classes:
F16H47/04; F16H61/40; F16H61/42; F16H61/66
Domestic Patent References:
| JP49003060A | ||||
| JP2003130213A | ||||
| JP2002098217A | ||||
| JP5248511A |
Attorney, Agent or Firm:
Tsutomu Inoue