| 摘要 |
PROBLEM TO BE SOLVED: To extend service life by reducing a load of a liquid pressure supply device.SOLUTION: When an ignition switch is at an OFF position (NO in the determination in S12) and when a liquid pressure demand level in an oil pressure brake is a first level or lower (YES in the determination in S13), an accumulator is opened to reduce the liquid pressure to a first set pressure (S14, 15). When the ignition switch is at an OFF position and when the liquid pressure demand level is a first level or lower, the accumulator may be opened since a need for supplying oil pressure from the accumulator is extremely low. Thus, a differential pressure action force acting on a boosting linear control valve arranged between the accumulator and brake cylinder can be reduced to make a load smaller. As a result, the service life can be extended. |
