发明名称 |
Control apparatus of working vehicle and control method thereof |
摘要 |
A control apparatus of a working vehicle including a hydraulic pump driven by an engine and two hydraulic motors connected in parallel to the hydraulic pump, a clutch being released or engaged so that a power is transmitted to one of the hydraulic motors via the clutch, includes: a load detection unit determining a load of the working vehicle from a throttle output amount and an engine speed of the engine; and a control unit reducing a pump injection amount of the hydraulic pump under an upper limit injection amount of the hydraulic pump predetermined based on the load at a time of release shift control of the clutch and increasing a pump injection amount of the hydraulic pump under a lower limit injection amount of the hydraulic pump predetermined based on the load at a time of engagement shift control of the clutch. |
申请公布号 |
US8888657(B2) |
申请公布日期 |
2014.11.18 |
申请号 |
US201213814782 |
申请日期 |
2012.04.17 |
申请人 |
Komatsu Ltd. |
发明人 |
Kitao Shinichi;Shirao Atsushi |
分类号 |
F16H61/00;F16H61/44;E02F9/22;E02F9/20;F16H61/431;F16H61/4035;F16H61/444 |
主分类号 |
F16H61/00 |
代理机构 |
Edwards Wildman Palmer LLP |
代理人 |
Edwards Wildman Palmer LLP |
主权项 |
1. A control apparatus of a working vehicle comprising a hydraulic circuit which is a closed circuit having a hydraulic pump driven by an engine and two hydraulic motors and in which the two hydraulic motors are connected in parallel to the hydraulic pump, a clutch being released or engaged so that a power is transmitted to an output shaft of one of the hydraulic motors via the clutch in the working vehicle, the working vehicle traveling by a drive force of the one or two hydraulic motors, the control apparatus comprising:
a load detection unit configured to determine a working vehicle load of the working vehicle from a throttle output amount and an engine speed of the engine; and a control unit configured to execute control for reducing a pump injection amount of the hydraulic pump under a restriction of an upper limit injection amount of the hydraulic pump predetermined based on the working vehicle load determined by the load detection unit at a time of release shift control of the clutch and execute control for increasing a pump injection amount of the hydraulic pump under a restriction of a lower limit injection amount of the hydraulic pump predetermined based on the working vehicle load determined by the load detection unit at a time of engagement shift control of the clutch. |
地址 |
Tokyo JP |