| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively prevent a temperature rise of stored oil in a first and second pump spaces storing a first and second hydraulic pumps, while reducing a cost through reduction of the number of parts. <P>SOLUTION: A single relief valve setting hydraulic pressures of both of charge oil passages for the first and second hydraulic pumps, is provided in a port block positioned between the first and second hydraulic pumps in the axial direction. Relief oil from the relief valve is guided into both of the first and second pump spaces, and a first and second pump side drain ports for opening outside the first and second pump spaces, respectively, are provided. <P>COPYRIGHT: (C)2012,JPO&INPIT |
