Title:
HST DRIVE CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2005/015062
Kind Code:
A1
Abstract:
An HST drive circuit containing an HST pump and an HST motor individually in a pump case and a motor case, wherein the HST drive circuit can be cooled efficiently. A cooling line is formed to discharge relief oil from a charging circuit (9) for replenishing an HST closed circuit (5) with pressure oil into the pump case (3) and to feed the discharged oil to an oil tank (7) through the pump case (3), communicating piping (14), the motor case (4), and an oil cooler (16), and working oil circulating through the HST pump (1), the HST motor (2), and the HST closed circuit (5) is cooled by the oil flowing through the cooling line.
Inventors:
UMEMURA TETSUO (JP)
KONISHI ISAO (JP)
SHIMAZAKI HIDEO (JP)
KONISHI ISAO (JP)
SHIMAZAKI HIDEO (JP)
Application Number:
PCT/JP2004/006109
Publication Date:
February 17, 2005
Filing Date:
April 27, 2004
Export Citation:
Assignee:
CATERPILLAR MITSUBISHI LTD (JP)
UMEMURA TETSUO (JP)
KONISHI ISAO (JP)
SHIMAZAKI HIDEO (JP)
UMEMURA TETSUO (JP)
KONISHI ISAO (JP)
SHIMAZAKI HIDEO (JP)
International Classes:
B60K17/10; F15B21/04; F16H61/40; F16H61/4104; F16H61/4139; F16H61/4165; (IPC1-7): F16H61/40
Foreign References:
| JPH1130304A | 1999-02-02 | |||
| JP2001146951A | 2001-05-29 | |||
| JP2002227998A | 2002-08-14 | |||
| JP2003014112A | 2003-01-15 |
Other References:
See also references of EP 1653127A4
Attorney, Agent or Firm:
Hirose, Tetsuo (2-5-6 Nishikanda, Chiyoda-k, Tokyo 65, JP)
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