公开(公告)号：US20180051803A1

公开(公告)日：2018-02-22

申请号：US15680805

申请日：2017-08-18

申请人： Eaton Corporation

发明人： QingHui Yuan ,  Matthew E. Creswick

IPC分类号： F16H61/438 ,  F16H61/00 ,  F16H39/10 ,  F16H47/04 ,  F16H47/07

CPC分类号： F16H61/438 ,  F16H39/10 ,  F16H39/12 ,  F16H47/02 ,  F16H47/04 ,  F16H47/07 ,  F16H61/0009 ,  F16H61/0025 ,  F16H2037/0866 ,  F16H2039/105 ,  F16H2047/045

摘要： A hydraulic mechanical transmission includes a first hydraulic unit having a first shaft and a second hydraulic unit having a second shaft. The second hydraulic unit is connected in hydraulic fluid communication with the first hydraulic unit by high and low pressure lines. A mechanical torque transfer arrangement transfers torque between the first shaft of the first hydraulic unit and a rotatable housing of the second hydraulic unit. One of the first and second hydraulic units operates as a hydraulic pump and the other operates as a hydraulic motor, and both of the first and second hydraulic units have variable displacement.