Title:
ファン駆動システム
Document Type and Number:
Japanese Patent JP4588089
Kind Code:
B2
Abstract:
A fan drive system for driving an engine cooling fan mounted in a working machine is described. The fan drive system includes a variable displacement pump that supplies oil to an actuator and is also used as a hydraulic pump for the hydraulic motor that drives the cooling fan. A pump displacement of a variable displacement pump can be controlled in accordance with the load of the working machine, and when a load is not generated in the working machine, the pump displacement of the variable displacement pump can be controlled in accordance with a load pressure of a hydraulic motor which drives a cooling fan. Examples of such working machines include a forklift, a skid steer loader (SSL) and a crawler dump.
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Inventors:
Toyomi Kataoka
Fukushima Junichi
Kazuhiro Maruta
Naoki Ishizaki
Fukushima Junichi
Kazuhiro Maruta
Naoki Ishizaki
Application Number:
JP2008530833A
Publication Date:
November 24, 2010
Filing Date:
July 19, 2007
Export Citation:
Assignee:
KOMATSU LTD.
International Classes:
F01P5/04; F01P7/04; F15B11/00
Domestic Patent References:
| JP2004169878A | 2004-06-17 | |||
| JP2005344766A | 2005-12-15 | |||
| JPH05141402A | 1993-06-08 |
Attorney, Agent or Firm:
Takeo Noguchi
Katsutoshi Shiozawa
Katsutoshi Shiozawa