公开(公告)号：US20150052889A1

公开(公告)日：2015-02-26

申请号：US14451747

申请日：2014-08-05

申请人： Linde Hydraulics GmbH & Co. KG

发明人： Lukas Krittian ,  Thomas Loeffler ,  Alfred Langen ,  Rolf Lassaar

IPC分类号： F02N9/04 ,  F04B13/00 ,  F03C1/26 ,  F04B49/12 ,  F03C1/00 ,  F02B73/00 ,  F04B17/05

CPC分类号： F02N7/08 ,  B60K6/12 ,  B60K2006/126 ,  F02B73/00 ,  F02N7/00 ,  F02N9/04 ,  F02N11/0814 ,  F03C1/005 ,  F03C1/26 ,  F04B13/00 ,  F04B17/05 ,  F04B49/12 ,  F16H61/42 ,  Y02T10/6208

摘要： A hydrostatic power unit (2) comprises a variable displacement machine with a continuously variable displacement volume and is operated as a pump and motor and is in a drive connection with an internal combustion engine (3). When operated as a pump, the power unit sucks hydraulic fluid out of a tank (9) and delivers into a delivery side (P), and, when operated as a motor, functions as a hydraulic starter to start the internal combustion engine (3). When operated as a motor, the power unit is supplied with hydraulic fluid from a hydraulic accumulator (30). The displacement volume of the power unit (2) is set by a displacement volume control device (60) actuated by a positioning piston device (61) supplied with hydraulic fluid from a charging pressure circuit (23). The power unit (2) includes a supplemental positioning piston device (80) in an operative connection with the displacement volume control device (60) and which is actuated directly by the pressure present in the hydraulic accumulator (30). By means of a connection of the supplemental positioning piston device (80) with the hydraulic accumulator, the power unit (2) can be adjusted to increase the displacement volume to start the internal combustion engine (3).

摘要翻译： 液压动力单元（2）包括具有连续可变位移容积的可变排量机器，并且作为泵和电动机操作并与内燃机（3）的驱动连接。 当作为泵操作时，动力单元将液压流体从罐（9）中吸出并输送到输送侧（P），并且当作为电动机操作时用作液压起动器以启动内燃机（3 ）。 当作为电动机操作时，动力单元从液压蓄能器（30）供应液压流体。 动力单元（2）的排量由通过从充电压力回路（23）供给液压流体的定位活塞装置（61）致动的排量体积控制装置（60）来设定。 动力单元（2）包括与排量体积控制装置（60）可操作连接的补充定位活塞装置（80），并且由液压蓄能器（30）中存在的压力直接致动。 通过辅助定位活塞装置（80）与液压蓄能器的连接，可以调节动力单元（2）以增大起动内燃机（3）的排量。