发明名称 |
Work vehicle |
摘要 |
A hydraulic oil supply circuit of a work vehicle is configured to supply hydraulic oil to a transmission. A hydraulic oil warming circuit is configured to warm up the hydraulic oil. A control unit is configured to control the transmission, the hydraulic oil supply circuit, and the hydraulic oil warming circuit. The transmission includes a hydraulic clutch and a clutch control valve. The clutch control valve is configured to control the pressure of the hydraulic oil supplied to the hydraulic clutch according to a command from the control unit. When the control unit determines that the temperature of the hydraulic oil is low, it is configured to output a warming up command for operation of a warming up function. The hydraulic oil warming circuit is configured to warm up the hydraulic oil by causing a pressure loss in a flow path for the hydraulic oil. |
申请公布号 |
US9625033(B2) |
申请公布日期 |
2017.04.18 |
申请号 |
US201414903316 |
申请日期 |
2014.06.18 |
申请人 |
KOMATSU LTD. |
发明人 |
Naito Makoto;Naito Shinichi |
分类号 |
F16H61/00;F16H61/16;F16H59/64;F16H61/02;F16H61/686;E02F9/22;E02F9/20;F16H3/46 |
主分类号 |
F16H61/00 |
代理机构 |
Global IP Counselors, LLP |
代理人 |
Global IP Counselors, LLP |
主权项 |
1. A work vehicle, comprising:
an engine; a transmission configured to convert a driving force from the engine; a hydraulic oil supply circuit configured to supply hydraulic oil to the transmission; a hydraulic oil warming circuit configured to warm up the hydraulic oil; and a control unit configured to control the transmission, the hydraulic oil supply circuit, and the hydraulic oil warming circuit, the transmission including
a hydraulic clutch; anda clutch control valve configured to control a pressure of the hydraulic oil supplied to the hydraulic clutch according to a command from the control unit, the control unit being configured to output a warming up command to cause the warming up function to be performed when the control unit determines that the temperature of the hydraulic oil is low; and the hydraulic oil warming circuit being configured to warm up the hydraulic oil by causing a pressure loss in a flow path for the hydraulic oil. |
地址 |
Tokyo JP |