| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid supplying device for a vehicle capable of securing certainly the supply pressure of a liquid (pressure oil or fuel) properly even at the time of starting an engine when the rise of the discharge pressure of an engine-driven pump is likely to delay. SOLUTION: The liquid supplying device is for a vehicle equipped with an air tank 8 to store the air pressure to a brake system and an air compressor 9 controlled so that its internal pressure is maintained within the specified range, wherein a pressurizing means compensates a shortage of the supply pressure fed to the system controlled with the oil pressure from the engine-driven pump 3 on the basis of the air pressure in the air tank 8. The pressurizing means is equipped with a piston element 14 reciprocating in the direction restricted by a cylinder 13, an oil chamber 15 partitioned by one pressure receiving surface of the piston element, an air chamber 16 partitioned by the other pressure receiving surface of the piston element, piping 18 to connect the air chamber 16 with the air tank 8 through a solenoid valve 19, a check valve 22 to restrict the supply circuit 10 for the oil pressure flowing to the pump 3 side from the connection part with the oil chamber, a means 21 to sense the discharge pressure of the pump 3, and a means 20 to control the solenoid valve 19 on the basis of the obtained sensing signal. COPYRIGHT: (C)2004,JPO
|
