发明名称 TRANSMISSION CONTROL DEVICE FOR WORKING MACHINE
摘要 The present invention provides a work machine gear shifting control device that is capable of readily identifying the cause of failure in learning the clutch hydraulic pressure for operating a transmission clutch. A transmission gear shifting control section 46 is provided for each of clutches 61-65, has a plurality of handling processes (which correspond to similar steps included in steps S300 to S344 and step S360), which each include a plurality of subprocesses (steps 1 to 3), and performs a learning process in which each of the plurality of handling processes learns the clutch hydraulic pressure for each of the clutches 61-65 and determines clutch hydraulic pressure characteristic values for operating the individual clutches. Further, the transmission gear shifting control section 46 performs a learning monitoring process (steps S400 to S442) in each of the plurality of handling processes to formulate an error judgment, which indicates whether learning has failed in each of the plurality of subprocesses, and display the result of the judgment.
申请公布号 EP1967769(A1) 申请公布日期 2008.09.10
申请号 EP20060823242 申请日期 2006.11.09
申请人 HITACHI CONSTRUCTION MACHINERY CO., LTD. 发明人 TSUKADA, HIDENOBU;KOWATARI, YOUICHI;NAKAMURA, KAZUNORI;YOSHIKAWA, MASAKI
分类号 F16H61/06;F16H59/46;F16H59/68;F16H59/72;F16H61/04;F16H61/12 主分类号 F16H61/06
代理机构 代理人
主权项
地址