JPH0221109U

JPH0221109U -

Info

Publication number: JPH0221109U
Application number: JP10070188U
Authority: JP
Priority date: 1988-07-29
Filing date: 1988-07-29
Publication date: 1990-02-13
Anticipated expiration: 2003-07-29
Also published as: JPH0737931Y2

Description

[Brief explanation of drawings]

図面はこの考案の一実施例を示すもので、第１
図は車高調整装置全体の概略構成図、第２図はレ
ベリングバルブの作動状態およびコントローラに
よる制御状態を示す特性図である。１ａ，１ｂ，１ｃ，１ｄ……空気ばね（流体ば
ね）、２……エアタンク（流体供給源）、３ａ，
３ｂ……フロントレベリングバルブ、４……リヤ
レベリングバルブ、１１……フロントバイパス通
路、１２……リヤバイパス通路、１３……フロン
ト供給制御弁、１４……リヤ供給制御弁、１７…
…コントローラ、１８……フロント車速センサ、
１９……リヤ車速センサ。 The drawing shows one embodiment of this invention.
The figure is a schematic configuration diagram of the entire vehicle height adjustment device, and FIG. 2 is a characteristic diagram showing the operating state of the leveling valve and the control state by the controller. 1a, 1b, 1c, 1d...air spring (fluid spring), 2...air tank (fluid supply source), 3a,
3b...Front leveling valve, 4...Rear leveling valve, 11...Front bypass passage, 12...Rear bypass passage, 13...Front supply control valve, 14...Rear supply control valve, 17...
...Controller, 18...Front vehicle speed sensor,
19...Rear vehicle speed sensor.

Claims

[Scope of utility model registration request]

a fluid spring chamber for vehicle height adjustment interposed between the vehicle body and the axle; and a fluid spring chamber interposed between the vehicle body and the axle;
Mechanically linked to changes in vehicle height, fluid is discharged from the fluid spring chamber when the vehicle height is higher than the set neutral range, and fluid is discharged from the fluid supply source when the vehicle height is lower than the set neutral range. In a vehicle height adjustment device comprising a leveling valve that supplies fluid to a spring chamber and stops supplying and discharging fluid from the fluid spring chamber when the vehicle height is within the same set neutral range, the fluid spring chamber and the fluid supply a fluid supply device comprising: a bypass passage connected to a source with the leveling valve bypassed; and a supply control valve that supplies fluid from the fluid supply source to the fluid spring chamber via the bypass passage; When the vehicle height sensor detects the displacement between the vehicle body and the axle, and the vehicle height detected by the vehicle height sensor is lower than the set vehicle height, which is set closer to the lower vehicle height than the neutral range set by the leveling valve. A vehicle height adjustment device comprising: a controller for opening the supply control valve; and a vehicle height adjustment device, wherein the fluid supply amount per unit time of the fluid supply device is set to be larger than the fluid supply amount per unit time of the leveling valve.