| 摘要 |
PROBLEM TO BE SOLVED: To introduce negative pressure to an oil pressure circuit without mixing air into the oil pressure circuit for supplying oil pressure to a brake. SOLUTION: A brake fluid is filled in the oil pressure circuit 600 comprising a master cylinder 400 and a brake actuator 500. The brake fluid is released to atmosphere pressure in a reservoir tank 402. A vacuum pump 800 is connected to the upper part of the reservoir tank 402. The vacuum pump 800 is connected to the oil pressure circuit 600 so as to introduce the negative pressure to the oil pressure circuit 600. COPYRIGHT: (C)2011,JPO&INPIT
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