| 摘要 |
A stroke control valve (20) is used for controlling the communication of fluid to the stroke control chamber (32) of a main radial piston pump (12) which is supplied by a charge pump (14). The output of both pumps is connected to separate inlets (26, 28) of the valve which also has an outlet (30) to the chamber (32). …<??>At high output pressure of the main pump (12) the valve (10) moves to connect this output to the outlet (30) for destroking whilst at the same time blocking the inlet (26) from the charge pump (14) by a check valve (44,46). At low pressure the valve (10) moves back and the charge pump outlet is connected to the chamber (32). |
