Invention Grant
US07987941B2 Construction vehicle with controller for suppressing reduction of traction force under low speed traveling condition
有权
具有控制器的施工车辆，用于在低速行驶状态下抑制牵引力的降低
- Patent Title: Construction vehicle with controller for suppressing reduction of traction force under low speed traveling condition
- Patent Title (中): 具有控制器的施工车辆，用于在低速行驶状态下抑制牵引力的降低
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Application No.: US12439407Application Date: 2007-08-28
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Publication No.: US07987941B2Publication Date: 2011-08-02
- Inventor: Atsushi Shirao , Minoru Wada , Yuuya Kusumoto
- Applicant: Atsushi Shirao , Minoru Wada , Yuuya Kusumoto
- Applicant Address: JP Tokyo
- Assignee: Komatsu Ltd.
- Current Assignee: Komatsu Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Global IP Counselors
- Priority: JP2006-289668 20061025
- International Application: PCT/JP2007/066677 WO 20070828
- International Announcement: WO2008/050534 WO 20080502
- Main IPC: B60K17/356
- IPC: B60K17/356
Abstract:
A construction vehicle includes an engine, a hydraulic pump driven by the engine, a travel hydraulic motor driven by pressure oil discharged from the hydraulic pump, travel wheels driven by the drive force of the travel hydraulic motor, and a controller. The controller is configured to control an engine speed, displacement of the hydraulic pump, and displacement of the travel hydraulic motor in order to control a vehicle speed and traction force. The controller is further configured to increase a maximum displacement of the travel hydraulic motor as the vehicle speed decreases within a low speed range in which the vehicle speed is equal to or less than a predetermined threshold.
Public/Granted literature
- US20100009806A1 CONSTRUCTION VEHICLE Public/Granted day:2010-01-14
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