JPS624242B2 - - Google Patents
Info
- Publication number
- JPS624242B2 JPS624242B2 JP56128433A JP12843381A JPS624242B2 JP S624242 B2 JPS624242 B2 JP S624242B2 JP 56128433 A JP56128433 A JP 56128433A JP 12843381 A JP12843381 A JP 12843381A JP S624242 B2 JPS624242 B2 JP S624242B2
- Authority
- JP
- Japan
- Prior art keywords
- vehicle
- air
- vehicle height
- signal
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000001133 acceleration Effects 0.000 claims description 17
- 239000000725 suspension Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/015—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load the regulating means comprising electric or electronic elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/40—Type of actuator
- B60G2202/41—Fluid actuator
- B60G2202/412—Pneumatic actuator
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/10—Acceleration; Deceleration
- B60G2400/102—Acceleration; Deceleration vertical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/20—Speed
- B60G2400/204—Vehicle speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/30—Propulsion unit conditions
- B60G2400/302—Selected gear ratio; Transmission function
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
- B60G2400/80—Exterior conditions
- B60G2400/82—Ground surface
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Description
【発明の詳細な説明】
本発明は自動車の車高制御方法に関するもの
で、砂利路や凹凸が多い悪路走行時は自動的に車
高を上げて走行中の車体の接地を回避し、良路走
行時には自動的に車高を下げて走行安定性の向上
をはかるようにすることを目的とするものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle height control method for an automobile, and when driving on a gravel road or a rough road with many uneven surfaces, the vehicle height is automatically raised to avoid the vehicle body from touching the ground while driving. The purpose of this is to automatically lower the vehicle height when driving on the road to improve driving stability.
一般に自動車の車高は、走行安定性の面からは
低くするのが望ましいが、車高が低いと悪路走行
時車体の上、下振動により車体が地面に当り車体
を傷めてしまう。従つて普通は良路と悪路のいず
れにもある程度適応できる平均的な車高に設定し
ているのが現状である。 Generally, it is desirable to lower the vehicle height of an automobile from the viewpoint of driving stability, but if the vehicle height is low, the vehicle body will hit the ground due to vibrations from above and below when driving on rough roads, causing damage to the vehicle body. Therefore, the current situation is that vehicles are usually set at an average vehicle height that can be adapted to some extent on both good and bad roads.
又上記のように良路と悪路のいずれにもある程
度適応できる平均的な車高に設定しておき、車高
が変化したときサスペンシヨンシリンダに油やエ
アを給排して車高を上記設定車高を保つべく制御
するようにしたものが従来より開発され、特開昭
55−164515号公報として公開されている。 Also, as mentioned above, set the vehicle height to an average that can be adapted to some extent on both good and bad roads, and when the vehicle height changes, supply and discharge oil and air to the suspension cylinder to raise the vehicle height to the above level. A control system that maintains the set vehicle height has been previously developed, and
It is published as Publication No. 55-164515.
本発明は、車輪懸架装置としてエアサスペンシ
ヨンを用いた自動車において、種々の走行条件を
センシングして電気的信号を発するセンサの各信
号に基づき、演算回路によつて良路走行時である
か悪路走行時であるかを判断し、該演算回路から
の出力信号によりエアサスペンシヨンへのエア供
給及びエア排出を行い、良路では車高を低くし悪
路では車高を高くするよう自動的に制御するよう
にするもので、以下本発明を附図実施例を参照し
て説明する。 The present invention provides a vehicle that uses an air suspension as a wheel suspension system, and uses an arithmetic circuit to determine whether the vehicle is traveling on a good road or not, based on each signal from a sensor that senses various driving conditions and issues an electrical signal. It determines whether the vehicle is traveling on a road and supplies and discharges air to the air suspension based on the output signal from the calculation circuit, automatically lowering the vehicle height on good roads and raising it on bad roads. The present invention will be described below with reference to embodiments shown in the accompanying drawings.
第１図は本発明の概要を説明する説明図で、１
はエアサスペンシヨンに装備されるエア封入部で
あり、該エア封入部１内に封入されたエアの容積
弾性にて車輪の上、下振動を吸収軽減すると共
に、該エア封入部１内にエアを供給すると車高が
高くなり、エア封入部１内のエアを外部に排出す
れば車高が下るようになつている。又該エア封入
部１には車高センサＡが設けられている。 FIG. 1 is an explanatory diagram for explaining the outline of the present invention.
is an air-sealed part installed in the air suspension.The volumetric elasticity of the air sealed in the air-sealed part 1 absorbs and reduces the vibrations of the wheels above and below. When air is supplied, the vehicle height increases, and when the air in the air sealing section 1 is discharged to the outside, the vehicle height is lowered. A vehicle height sensor A is also provided in the air sealing portion 1.
２は車載のエアタンクで、ポンプ３の駆動によ
りドライヤ４を介してエアタンク２内にエアを圧
入し、エアタンク２内は常に所定圧のエアが貯え
られており、給気弁IVが開くとエアタンク２内
のエアが配管６を通つてエア封入部１内に供給さ
れ、排気弁EVが開くと配管７からエア封入部１
内のエアが逆止弁CVを介して外部に排出される
ようになつている。 Reference numeral 2 denotes an air tank mounted on the vehicle. Air is pressurized into the air tank 2 through a dryer 4 when the pump 3 is driven. Air at a predetermined pressure is always stored in the air tank 2. When the air supply valve IV is opened, air is pumped into the air tank 2. The air inside is supplied into the air sealing part 1 through the pipe 6, and when the exhaust valve EV is opened, the air is supplied from the pipe 7 into the air sealing part 1.
The air inside is discharged to the outside via the check valve CV.
尚図示では後輪の左、右のエア封入部のみを示
しているが、前輪の左、右のエア封入部にも配管
６′によつて同様にエアの供給及びエアの排出が
行われる。 Although only the left and right air enclosures of the rear wheels are shown in the figure, air is similarly supplied to and discharged from the left and right air enclosures of the front wheels through the piping 6'.
５は車高制御回路で、該車高制御回路５は、車
体の上下加速度を検知して作動する上下加速度セ
ンサＢ、車速を検知して作動する車速センサＣ、
変速装置のギヤ位置を検知して作動するギヤ位置
センサＤ及び２輪駆動され４輪駆動への切換を行
い得るようにした自動車（以下4WD車を称す）
においては４輪駆動となつているとき作動する
4WDセンサＥ等の各センサの電気的信号に基づ
いて良路走行状態であるか悪路走行状態であるか
を判断し、亜路走行状態で車高が低い場合（車高
センサＡの信号による）はアツプ信号を発して給
気弁IVのソレノイドISに電流を流して給気弁IV
を開作動させ、悪路走行状態から良路走行に移行
すると車高制御回路がダウン信号を発して排気弁
EVのソレノイドESに電流を流して排気弁EVを
開作動させ、これにより車高を悪路では行く、良
路では低くなるよう自動的に制御する。 Reference numeral 5 denotes a vehicle height control circuit, and the vehicle height control circuit 5 includes a vertical acceleration sensor B that operates by detecting the vertical acceleration of the vehicle body, a vehicle speed sensor C that operates by detecting the vehicle speed,
A gear position sensor D that detects the gear position of a transmission and operates, and a two-wheel drive vehicle that can switch to four-wheel drive (hereinafter referred to as a 4WD vehicle)
operates when the vehicle is in four-wheel drive.
It determines whether the vehicle is driving on a good road or a rough road based on the electrical signals of each sensor such as 4WD sensor E. ) issues an UP signal and sends current to the solenoid IS of the air intake valve IV.
When the car is opened and the vehicle changes from driving on a rough road to driving on a good road, the vehicle height control circuit issues a down signal and closes the exhaust valve.
A current is applied to the EV's solenoid ES to open the exhaust valve EV, which automatically controls the vehicle height to be higher on rough roads and lower on good roads.
上記車高制御回路の具体例を第２図を参照して
説明する。 A specific example of the vehicle height control circuit will be described with reference to FIG. 2.
第２図において、車速センサＣは設定車速以下
でオンとなり、又ギヤ位置センサＤはトツプ以外
の3rd、2nd及びローの低速段においてオンとな
るスイツチを用いている。 In FIG. 2, the vehicle speed sensor C is turned on when the vehicle speed is below the set speed, and the gear position sensor D uses a switch that is turned on at low gears such as 3rd, 2nd and low gears other than top.
上下加速度センサＢの上下加速度信号はＤ−Ａ
変換器Ｆにより電圧に変換され、該電圧は比較器
COMPにて基準電圧発生回路Ｇの基準電圧と比較
され、上下加速度センサＢ側の電圧が基準電圧よ
り大なるときは比較器COMPより信号が発せられ
る。 The vertical acceleration signal of vertical acceleration sensor B is D-A
is converted into a voltage by a converter F, and the voltage is converted to a voltage by a comparator
COMP compares it with the reference voltage of the reference voltage generation circuit G, and when the voltage on the vertical acceleration sensor B side is greater than the reference voltage, a signal is generated from the comparator COMP.
一般に砂利道や凹凸が続く悪路を走行する場合
は、ギヤはトツプ以外の低速段に切換えなくては
ならず、又高速で走行することはなく、更に
4WD車の場合はスリツプを防止する為に４輪駆
動側に切換えるのが普通である。 Generally, when driving on a gravel road or a rough road with many uneven surfaces, the gear must be changed to a lower gear other than top, and the vehicle must not be driven at high speed.
In the case of a 4WD vehicle, it is normal to switch to 4WD to prevent slipping.
そこで上下加速度センサＢ側の電圧が基準電圧
より高く比較器COMPから信号ａが発せられると
共に、車速が設定値以下で且つギヤが低速段であ
り車速センサＣ及びギヤ位置センサＤが共にオン
となりアンド回路AND2の出力信号ｂが発せら
れ、更に４輪駆動側に切換えて4WDセンサＥの
信号ｃが発せられると、悪路走行状態であると判
断し、これらの信号ａ，ｂ，ｃがインプツトされ
るアンド回路AND1が信号ｄを発し、オア回路
OR1、ホールド回路H1を介してアンド回路AND3
に該信号ｄがインプツトされ、そのとき車高が低
いと、アンド回路AND3よりアツプ信号ｅが発せ
られ、前記のように給気弁IVを開き車高を上げ
る。 Therefore, the voltage on the vertical acceleration sensor B side is higher than the reference voltage and the signal a is emitted from the comparator COMP, and since the vehicle speed is below the set value and the gear is in the low gear, both the vehicle speed sensor C and the gear position sensor D are turned on. When the output signal b of the circuit AND 2 is generated, and the 4WD sensor E outputs the signal c after switching to the 4-wheel drive side, it is determined that the vehicle is driving on a rough road, and these signals a, b, and c are input. The AND circuit AND 1 emits the signal d, and the OR circuit
OR 1 , AND circuit AND 3 through hold circuit H 1
When the signal d is input to the vehicle and the vehicle height is low at that time, an up signal e is generated from the AND circuit AND3 , and the air intake valve IV is opened as described above to raise the vehicle height.
車高が設定された高さまで上ると車高センサＡ
より上限信号ｆがホールド解除回路I1にインプツ
トされ、前記ホールド回路H1のホールドは解除
されアツプ信号は停止して給気弁IVが閉じ、車
高は高い位置に保持される。 When the vehicle height reaches the set height, vehicle height sensor A
Then, the upper limit signal f is input to the hold release circuit I1 , the hold of the hold circuit H1 is released, the up signal is stopped, the air intake valve IV is closed, and the vehicle height is maintained at a high position.
悪路走行状態から良路に入ると、車速及びギヤ
位置は前記悪路のときのままで上下加速度のみが
低くなり比較器COMPからの信号ａが停止する。
するとノツトNOTで反転して上下加速度信号
a′がアンド回路AND4にインプツトされ、前記車
速センサＣの車速信号b1とギヤ位置センサＤのギ
ヤ位置信号b2とによりアンド回路AND4からの信
号ｇが発せられ、オア回路OR2、ホールド回路H2
を介してアンド回路AND5に至り、車高センサＡ
の信号とのアンドによりダウン信号ｈが発せら
れ、第１図の排気弁EVを開き、車高を下げる。 When the vehicle enters a good road from a rough road state, the vehicle speed and gear position remain the same as when on the bad road, only the vertical acceleration decreases, and the signal a from the comparator COMP stops.
Then, it is reversed at NOT and the vertical acceleration signal is
a' is input to the AND circuit AND 4 , and a signal g is generated from the AND circuit AND 4 based on the vehicle speed signal b 1 from the vehicle speed sensor C and the gear position signal b 2 from the gear position sensor D, and the OR circuit OR 2 , Hold circuit H2
leads to the AND circuit AND 5 , and the vehicle height sensor A
A down signal h is generated by AND with the signal h, which opens the exhaust valve EV shown in Figure 1 and lowers the vehicle height.
車高が設定された高さまで下がると車高センサ
Ａの下限信号f′がホールド解除回路I2に入り、ホ
ールド回路H2のホールドは解除され、ダウン信
号ｈは停止して排気弁EVを閉じ、車高は低いノ
ーマルな高さに保持される。 When the vehicle height drops to the set height, the lower limit signal f' of the vehicle height sensor A enters the hold release circuit I2 , the hold of the hold circuit H2 is released, and the down signal h stops and the exhaust valve EV is closed. , the vehicle height is maintained at a low normal height.
上記のようにして車高制御回路５によつて良路
及び悪路にそれぞれ適した車高となるよう的確に
自動制御される。 As described above, the vehicle height control circuit 5 automatically and accurately controls the vehicle height so that the vehicle height is suitable for both good roads and bad roads.
尚Ｊは手動の車高調整スイツチで、該スイツチ
Ｊによりマニアルにてアツプ信号ｅ又はダウン信
号ｈを発し、自由に車高を変えることができるよ
うになつている。 Note that J is a manual vehicle height adjustment switch, and the switch J manually issues an up signal e or a down signal h, allowing the vehicle height to be freely changed.
上下加速度センサＢによる上下加速度信号ａ
は、例えば良路にたまたま存在する部分的な凹凸
によつて発せられることがないよう、ある一定時
間基準電圧より大なる電圧が続いた場合に信号ａ
が発せられるよう構成しておくことが望ましい。 Vertical acceleration signal a from vertical acceleration sensor B
For example, in order to prevent the signal from being generated due to local irregularities that happen to exist on a good road, the signal a is generated when a voltage higher than the reference voltage continues for a certain period of time.
It is desirable to configure the system so that it is emitted.
尚上記実施例における4WDセンサＥを省略
し、上下加速度センサの上下加速度信号ａと車速
センサＣ及びギヤ位置センサＤの信号ｂのアンド
により悪路走行状態を判断するようにしても良
く、このようにすれば4WD車以外の自動車にも
本発明を適用することができる。又上記におい
て、車速センサＣがオンとなるべき車速の設定値
が実質的にトツプギヤでは走行できない例えば30
Km／ｈ程度以下に設定されている場合は、該車速
センサＣがオン信号を発したときは変速装置のギ
ヤ位置は当然トツプギヤ以外の低速段にシフトさ
れていることになり、このような場合はギヤ位置
センサＤを省略しても充分初期の機能を果たし得
る。 Note that the 4WD sensor E in the above embodiment may be omitted, and the rough road driving condition may be determined by ANDing the vertical acceleration signal a of the vertical acceleration sensor and the signal b of the vehicle speed sensor C and gear position sensor D. If this is done, the present invention can be applied to vehicles other than 4WD vehicles. In addition, in the above, the set value of the vehicle speed at which the vehicle speed sensor C should be turned on is set to 30,000,000 when the vehicle cannot actually run in top gear.
If the speed is set to about Km/h or less, when the vehicle speed sensor C issues an on signal, the gear position of the transmission will naturally be shifted to a lower speed gear other than top gear. can sufficiently perform its initial function even if the gear position sensor D is omitted.
以上のように本発明によれば、自動車走行時、
良路から悪路に移行した場合はすぐに自動的に車
高を高くして車体或は床下に取付けられた諸器機
の接地、損傷等の不具合を防止し、良路に移行す
ると即座に自動的に車高を低くして走行安定性の
向上をはかり得るものであり、これらの車高制御
がドライバーの手をわずらわせることなくすべて
自動的に行われることによりドライバーは運転の
みに専念でき疲労軽減をはかることができるもの
で、実用上多大の効果をもたらし得るものであ
る。 As described above, according to the present invention, when a car is running,
When the road changes from good to bad, it automatically raises the vehicle height to prevent problems such as grounding and damage to various equipment installed on the vehicle body or under the floor. It is possible to improve driving stability by lowering the vehicle height, and since all of these vehicle height controls are performed automatically without the driver's intervention, the driver can concentrate solely on driving. It can reduce fatigue and can have great practical effects.
第１図は本発明の一実施例を示す車高制御系統
説明図、第２図は第１図の車高制御回路の一具体
例を示す回路図である。
１……エア封入部、２……エアタンク、３……
ポンプ、５……車高制御回路、IV給気弁、EV…
…排気弁、Ａ……車高センサ、Ｂ……上下加速度
センサ、Ｃ……車速センサ、Ｄ……ギヤ位置セン
サ、Ｅ……4WDセンサ。
FIG. 1 is an explanatory diagram of a vehicle height control system showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a specific example of the vehicle height control circuit of FIG. 1... Air sealing section, 2... Air tank, 3...
Pump, 5...Vehicle height control circuit, IV air supply valve, EV...
...Exhaust valve, A...Vehicle height sensor, B...Vertical acceleration sensor, C...Vehicle speed sensor, D...Gear position sensor, E...4WD sensor.
Claims (1)
ア封入部を備えたエアサスペンシヨンを用いた自
動車において、車両の上下加速度が所定値以上で
車速が設定値以下であるとき、車高制御回路にて
悪路走行状態であると判断し、上記エア封入部に
エアを供給して車高をアツプさせるアツプ信号を
車高制御回路が発すると共に、上下加速度が所定
値以下となつたとき良路走行状態に移行したと判
断し、上記車高制御回路がエア封入部よりエアを
排出して車高をダウンさせるダウン信号を発し、
車高を自動制御することを特徴とする自動車の車
高制御方法。 ２ 車輪懸架装置として内部にエアを封入したエ
ア封入部を備えたエアサスペンシヨンを用いた自
動車において、車両の上下加速度が所定値以上で
車速が設定値以下であり且つ変速装置のギヤ位置
が最高段以外の低速段であるとき、車高制御回路
にて悪路走行状態であると判断し、上記エア封入
部にエアを供給して車高をアツプさせるアツプ信
号を車高制御回路が発すると共に、上下加速度が
所定値以下となつたとき良路走行状態に移行した
と判断し、上記車高制御回路がエア封入部よりエ
アを排出して車高をダウンさせるダウン信号を発
し、車高を自動制御することを特徴とする自動車
の車高制御方法。[Scope of Claims] 1. In a vehicle using an air suspension equipped with an air-sealed portion that seals air inside as a wheel suspension device, when the vertical acceleration of the vehicle is greater than a predetermined value and the vehicle speed is less than a predetermined value, The vehicle height control circuit determines that the vehicle is traveling on a rough road, and issues an up signal to increase the vehicle height by supplying air to the air sealing section, and also when the vertical acceleration falls below a predetermined value. When this happens, the vehicle height control circuit determines that the vehicle is traveling on a good road and issues a down signal to discharge air from the air sealing section and lower the vehicle height.
A vehicle height control method for an automobile, characterized by automatically controlling the vehicle height. 2. In a vehicle that uses an air suspension equipped with an air-sealed part that seals air inside as a wheel suspension system, the vertical acceleration of the vehicle is above a predetermined value, the vehicle speed is below a set value, and the gear position of the transmission is at its highest. When the vehicle is in a low speed gear, the vehicle height control circuit determines that the vehicle is traveling on a rough road, and the vehicle height control circuit issues an up signal that increases the vehicle height by supplying air to the air filling section. When the vertical acceleration falls below a predetermined value, it is determined that the vehicle has entered a state of good road driving, and the vehicle height control circuit issues a down signal to lower the vehicle height by discharging air from the air sealing section, thereby lowering the vehicle height. A vehicle height control method for an automobile characterized by automatic control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12843381A JPS5830809A (en) | 1981-08-17 | 1981-08-17 | Car height control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12843381A JPS5830809A (en) | 1981-08-17 | 1981-08-17 | Car height control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5830809A JPS5830809A (en) | 1983-02-23 |
| JPS624242B2 true JPS624242B2 (en) | 1987-01-29 |
Family
ID=14984621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12843381A Granted JPS5830809A (en) | 1981-08-17 | 1981-08-17 | Car height control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5830809A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS609707U (en) * | 1983-06-30 | 1985-01-23 | 三菱自動車工業株式会社 | vehicle height adjustment device |
| JPH0616527B2 (en) * | 1983-07-29 | 1994-03-02 | 関西日本電気株式会社 | Adhesive sheet for semiconductor wafer dicing |
| JPS60223139A (en) * | 1984-04-18 | 1985-11-07 | Nitto Electric Ind Co Ltd | Bonding sheet for fixing semiconductor wafer |
| JPS61161178A (en) * | 1985-01-01 | 1986-07-21 | Fukubi Kagaku Kogyo Kk | Painting method of paint curable by ultraviolet ray |
| JPS6218244A (en) * | 1985-07-17 | 1987-01-27 | Washi Kosan Kk | Method and device for manufacturing transparent resin plate having thin film |
| JPH03118104U (en) * | 1990-03-19 | 1991-12-05 | ||
| JPH04128902U (en) * | 1991-05-17 | 1992-11-25 | 株式会社カンセイ | vehicle height control device |
| JP2545011B2 (en) * | 1992-03-31 | 1996-10-16 | 日東電工株式会社 | Method for manufacturing surface protector |
| JP2007045231A (en) * | 2005-08-08 | 2007-02-22 | Toyota Motor Corp | Vehicle height adjustment system for vehicle |
| EP2363309B1 (en) * | 2010-02-25 | 2013-02-06 | KNORR-BREMSE Systeme für Nutzfahrzeuge GmbH | Method for operating a level regulating device on a vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57172808A (en) * | 1981-04-14 | 1982-10-23 | Toyota Motor Corp | Vehicle height regulator |
-
1981
- 1981-08-17 JP JP12843381A patent/JPS5830809A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57172808A (en) * | 1981-04-14 | 1982-10-23 | Toyota Motor Corp | Vehicle height regulator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5830809A (en) | 1983-02-23 |
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