公开(公告)号：EP1541901A2

公开(公告)日：2005-06-15

申请号：EP05100820.9

申请日：2002-09-26

申请人： DEERE & COMPANY

发明人： Meyer, Duane Frederick ,  Eisele, Edwin Lee ,  Rodeghiero, Reno Antonio

IPC分类号： F16H61/12

CPC分类号： F15B19/005 ,  F16H57/0446 ,  F16H61/0021 ,  F16H61/12 ,  F16H2061/0037 ,  F16H2061/1264

摘要： A system and method are provided for monitoring a vehicle hydraulic system having a plurality of hydraulic function elements (50, 52, 54, 60, 62, 70). The hydraulic system includes a hydraulic pump (12) for supplying pressurized hydraulic fluid to the plurality of hydraulic function elements (50, 52, 54, 60, 62, 70) via a corresponding plurality of hydraulic element control valves (16, 20), an electronic control unit (40) for controlling the element control valves (16, 20). The pump (12) also supplies lube fluid to a lubrication circuit if requirements of the hydraulic function elements (50, 52, 54, 60, 62, 70) are met. The method includes sensing a hydraulic pressure, and comparing the sensed pressure to a threshold pressure. If the sensed pressure is less than threshold pressure, then actively engaged hydraulic elements (50, 52, 54, 60, 62, 70) are tested by disengaging the elements (50, 52, 54, 60, 62, 70) in a predetermined manner, checking to see if the sensed low pressure condition is eliminated. If the sensed low pressure condition is eliminated after disengaging an element, then the leaking hydraulic function element is deactivated.

摘要翻译： 提供一种用于监测具有多个液压功能元件（50,52,54,60,62,70）的车辆液压系统的系统和方法。 液压系统包括用于通过相应的多个液压元件控制阀（16,20）向多个液压功能元件（50,52,54,60,62,70）供应加压液压流体的液压泵（12） 用于控制元件控制阀（16,20）的电子控制单元（40）。 如果满足液压功能元件（50,52,54,60,62,70）的要求，泵（12）还将润滑油供应到润滑回路。 该方法包括感测液压，并将感测到的压力与阈值压力进行比较。 如果感测到的压力小于阈值压力，则通过使元件（50,52,54,60,62,70）以预定的方式脱开来测试主动接合的液压元件（50,52,54,60,62,70） 检查检测到的低压条件是否被消除。 如果在分离元件之后消除感测到的低压条件，则泄漏的液压功能元件被去激活。

公开(公告)号：EP1541901B1

公开(公告)日：2007-01-24

申请号：EP05100820.9

申请日：2002-09-26

申请人： DEERE & COMPANY

发明人： Meyer, Duane Frederick ,  Eisele, Edwin Lee ,  Rodeghiero, Reno Antonio

IPC分类号： F16H61/12

CPC分类号： F15B19/005 ,  F16H57/0446 ,  F16H61/0021 ,  F16H61/12 ,  F16H2061/0037 ,  F16H2061/1264

公开(公告)号：EP1541901A3

公开(公告)日：2005-11-16

申请号：EP05100820.9

申请日：2002-09-26

申请人： DEERE & COMPANY

发明人： Meyer, Duane Frederick ,  Eisele, Edwin Lee ,  Rodeghiero, Reno Antonio

IPC分类号： F16H61/12

CPC分类号： F15B19/005 ,  F16H57/0446 ,  F16H61/0021 ,  F16H61/12 ,  F16H2061/0037 ,  F16H2061/1264

摘要： A system and method are provided for monitoring a vehicle hydraulic system having a plurality of hydraulic function elements (50, 52, 54, 60, 62, 70). The hydraulic system includes a hydraulic pump (12) for supplying pressurized hydraulic fluid to the plurality of hydraulic function elements (50, 52, 54, 60, 62, 70) via a corresponding plurality of hydraulic element control valves (16, 20), an electronic control unit (40) for controlling the element control valves (16, 20). The pump (12) also supplies lube fluid to a lubrication circuit if requirements of the hydraulic function elements (50, 52, 54, 60, 62, 70) are met. The method includes sensing a hydraulic pressure, and comparing the sensed pressure to a threshold pressure. If the sensed pressure is less than threshold pressure, then actively engaged hydraulic elements (50, 52, 54, 60, 62, 70) are tested by disengaging the elements (50, 52, 54, 60, 62, 70) in a predetermined manner, checking to see if the sensed low pressure condition is eliminated. If the sensed low pressure condition is eliminated after disengaging an element, then the leaking hydraulic function element is deactivated.