JPS6047715A - Car height adjusting device - Google Patents

Car height adjusting device

Info

Publication number
JPS6047715A
JPS6047715A JP15680283A JP15680283A JPS6047715A JP S6047715 A JPS6047715 A JP S6047715A JP 15680283 A JP15680283 A JP 15680283A JP 15680283 A JP15680283 A JP 15680283A JP S6047715 A JPS6047715 A JP S6047715A
Authority
JP
Japan
Prior art keywords
vehicle height
compressor
height adjustment
pressure
vehicle
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.)
Granted
Application number
JP15680283A
Other languages
Japanese (ja)
Other versions
JPS6256803B2 (en
Inventor
Shozo Takizawa
滝沢　省三
Hiroyuki Takada
弘之 高田
Mitsuhiko Harayoshi
原良　光彦
Shunichi Wada
俊一 和田
Setsuhiro Shimomura
下村　節宏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Mitsubishi Motors Corp
Original Assignee
Mitsubishi Electric Corp
Mitsubishi Motors Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp, Mitsubishi Motors Corp filed Critical Mitsubishi Electric Corp
Priority to JP15680283A priority Critical patent/JPS6047715A/en
Publication of JPS6047715A publication Critical patent/JPS6047715A/en
Publication of JPS6256803B2 publication Critical patent/JPS6256803B2/ja
Granted legal-status Critical Current

Links

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
    • B60G2400/00—Indexing codes relating to detected, measured or calculated conditions or factors
    • B60G2400/50—Pressure
    • B60G2400/51—Pressure in suspension unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2500/00—Indexing codes relating to the regulated action or device
    • B60G2500/30—Height or ground clearance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2600/00—Indexing codes relating to particular elements, systems or processes used on suspension systems or suspension control systems
    • B60G2600/02—Retarders, delaying means, dead zones, threshold values, cut-off frequency, timer interruption

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

PURPOSE:To enable the car height lift control at an overloaded condition by activating a compressor if a pressure detector indicates a high-pressure state even after a fixed time elapses since the lift control start of car height adjustment in an automatic adjustment type car height adjusting device. CONSTITUTION:When the car height is lowered due to overloading, etc. and the air pressure in suspensions 10a, 10b becomes a preset pressure, the signal of a pressure detector 51 indicates a high pressure, a compressor 28 is stopped, and the car height lift control is started. At this time, if a car height-unadjustable condition continues for the first preset time, e.g., 10sec, or more with the compressor 28 being stopped, a control unit 22 forcibly drives the compressor 28 to increase the pressure, and the car height lift control is restarted. In addition, if the car height lift control is not completed even after the second longer preset time elapses, the compressor 28 is stopped, then an alarm is issued. Thereby, the car height lift adjustment can be safely performed even at an overloaded condition.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は車高調整装置に関するものであり、特に荷重及
び車速やその他の入力情報により車高を自動的に調整す
る装置において過積時の車高上げ制御の改良に係るもの
である。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a vehicle height adjustment device, and particularly to a device that automatically adjusts the vehicle height based on load, vehicle speed, and other input information. This relates to improvement of height raising control.

〔従来技術〕[Prior art]

従来、車高の変化を検出出来るセンサを用いて、車高を
目標位置に調整させる様にした車高調整装置は例えば特
開昭５６−６０７１１号に提案されている。Conventionally, a vehicle height adjustment device that uses a sensor capable of detecting changes in vehicle height to adjust the vehicle height to a target position has been proposed, for example, in Japanese Patent Laid-Open No. 56-60711.

ところで、圧縮ポンプやコンプレッサーの起動、停止制
御は圧縮された流体の圧力を検出する検出器を設け、そ
の検出器（例えば圧力ＳＷ）の出力により制御するよう
にしたものが普通で、車高調整の開始、停止制御とは独
立している。タンク（リザーブタンク）内に設けられた
圧力ＳＷにより空気圧は所定の圧力の幅の中におさまる
様に制御されている。車高上げ制御が行なわれていない
時にタンク内の圧力が例えば９　ｋｇ／ｃａｒで、車高
上げ制御が開始して、タンク内の圧縮空気が車高調整機
構へ流れ出して圧力が下がり例えば６　ｋｇ／ａＡを下
まわると圧力ＳＷがＯＮして、コンプレッサが起動し、
圧力低下した分の空気圧を高め、もう１度圧力が９　ｋ
ｇ／ｃｄ以上となるとコンプレッサは停止する。By the way, the starting and stopping control of compression pumps and compressors is usually done by installing a detector that detects the pressure of the compressed fluid and controlling it based on the output of that detector (for example, a pressure switch). It is independent from the start and stop control. The air pressure is controlled to be within a predetermined pressure range by a pressure switch provided in the tank (reserve tank). If the pressure in the tank is, for example, 9 kg/car when vehicle height raising control is not being performed, vehicle height raising control is started, the compressed air in the tank flows to the vehicle height adjustment mechanism, and the pressure decreases to, for example, 6 kg/car. /aA, the pressure switch is turned on and the compressor is started.
Increase the air pressure to compensate for the pressure drop and increase the pressure once again to 9 k.
When it exceeds g/cd, the compressor stops.

通常の車高制御装置のコンプレッサの制御は上記の様に
構成されているので、例えば荷重が非常に重くて、サス
ペンションの車高調整機構の中の空気ばね室の空気圧の
ほうが、１０ｋｇ／ｃｄとリザーブタンク内の空気圧よ
りも高い状態に遭遇した場合には、車高上げ制御を開始
しても車高は上がらず、場合によっては少し沈んだまま
で、圧力が高いのでコンプレッサも回らず、車高調整不
能の状態におち入ると云う欠点があった。The compressor control of a normal vehicle height control device is configured as described above, so for example, if the load is very heavy, the air pressure in the air spring chamber in the suspension vehicle height adjustment mechanism may be 10 kg/cd. If you encounter a situation where the air pressure is higher than the air pressure in the reserve tank, the vehicle height will not rise even if you start the vehicle height raising control, and in some cases the vehicle will remain slightly sunken, and the compressor will not rotate due to the high pressure, causing the vehicle height to rise. The drawback was that it could fall into a state where it could not be adjusted.

〔発明の概要〕[Summary of the invention]

本発明は上記欠点を除去する為のもので車高調整の上げ
制御が開始されてから第１の所定時間経過しても圧力検
出器の信号が高圧力の状態を示している場合には、強制
的にコンプレッサを起動させ、過積時においても車高調
整を可能と出来るようにしたものである。The present invention is intended to eliminate the above-mentioned drawbacks, and if the signal of the pressure detector indicates a high pressure state even after a first predetermined period of time has elapsed after the start of vehicle height adjustment raising control, This system forcibly starts the compressor, making it possible to adjust the vehicle height even when the vehicle is overloaded.

〔発明の実施例〕[Embodiments of the invention]

第１図は本発明の一実施例の車高センサの基本構成図で
、図において（１）は車体、（３）は車体（１）に取り
付けられた車高センサ、（９）は車輪又は車軸（２）に
取り付けられたロッド、（８）はロッド（９）と連結さ
れた車高センサ（３）のアームで、スリット（７）と連
結されている。（４）　、　（５）　、　（６）はフォ
トインクラブタで、スリット（７）の回転角度に応じて
、スリット（７）に加工された光の０Ｎ−ＯＦＦのパタ
ーンにもとづく電気信号のＯＮ、　ＯＦＦのパターンを
出力する。上記の様に構成された車高センサ（３）は車
体（１）と車輪又（よ車軸（２）との間の車高が変化す
るとロッド（９）及びアーム（８）が動き、スリット（
７）が回転し、インクラブタ（４）　、　（５）　、　
（６）より車高に応じたコードが検出信号として出力さ
れる。この実施例では最大２−８つの領域を検出する事
が出来る。FIG. 1 is a basic configuration diagram of a vehicle height sensor according to an embodiment of the present invention. In the figure, (1) is a vehicle body, (3) is a vehicle height sensor attached to the vehicle body (1), and (9) is a wheel or The rod (8) attached to the axle (2) is the arm of the vehicle height sensor (3) connected to the rod (9), which is connected to the slit (7). (4), (5), and (6) are photo ink acters that turn on and off electrical signals based on the ON-OFF pattern of light processed into the slit (7) according to the rotation angle of the slit (7). , Outputs an OFF pattern. In the vehicle height sensor (3) configured as described above, when the vehicle height between the vehicle body (1) and the wheel or axle (2) changes, the rod (9) and arm (8) move, and the slit (
7) rotates, and the incretors (4), (5),
(6) A code corresponding to the vehicle height is output as a detection signal. In this embodiment, a maximum of 2 to 8 areas can be detected.

第２図は本発明の一実施例の車高調整機構を構成する車
高調整機能付きのサスペンションαＱで、図においてα
υはコイルばね、（２）は空気ばねの空気室、０は空気
の通路、σ→はショックアブソーｚｆ、Ｑｆ９は車軸と
の連結部テアル。Figure 2 shows a suspension αQ with a vehicle height adjustment function that constitutes a vehicle height adjustment mechanism according to an embodiment of the present invention.
υ is the coil spring, (2) is the air chamber of the air spring, 0 is the air passage, σ→ is the shock absorber zf, and Qf9 is the connection part with the axle.

上記の様に構成されたサスペンションα０は、空％通路
（至）を通して空気を送り込むことにより、空気室（６
）の圧力があがり車体（１）と、車軸との連結部α時と
の間の高さつまり車高を上げる事が出来るし、逆に空気
を排出すれば、車高を下げる事が出来る。The suspension α0 configured as described above is constructed by sending air through the empty passageway (6) to the air chamber (6).
) increases, and the height between the vehicle body (1) and the connection part α to the axle, that is, the vehicle height, can be raised.On the other hand, if the air is discharged, the vehicle height can be lowered.

この空気を送り込むあるいは放出する為をこ、コンプレ
ッサ、圧力検出器、リザーブタンク、エアクリーナエア
ドライア等が必要であり、車高調整手段はこれらより構
成される。第８図は本発明の一実施例の基本構成図で、
図中３１）は車輪、■は制御装置、勾、（ハ）は空気弁
、に）は排気弁、（ハ）は給気弁、に）はタンク、に）
はコンプレッサ、（２）は車速センサ、に）は空気配管
、（ｌｉυは圧力検出器、伸４はリリーフ弁である。In order to send or release this air, a compressor, a pressure detector, a reserve tank, an air cleaner, an air dryer, etc. are required, and the vehicle height adjustment means is composed of these. FIG. 8 is a basic configuration diagram of an embodiment of the present invention.
In the figure, 31) is the wheel, ■ is the control device, (c) is the air valve, (c) is the exhaust valve, (c) is the air supply valve, (c) is the tank, and (c) is the air valve.
is a compressor, (2) is a vehicle speed sensor, (2) is an air pipe, (liυ is a pressure detector, and (4) is a relief valve.

第８図の様に構成された車高調整装置においては、制御
装置に）は車高センサ（８ａ）、（８ｂ）及び車速セン
サ四等の情報を読み取り車高調整の開始、停止を判断す
る。車高上げ制御を行なう場合にはコンプレッサ又はポ
ンプ（ト）を圧力検出潰しυの信号をもとに必要に応じ
て運転し、給気弁（イ）を開け、排気弁（２）を閉じ、
空気弁（イ）、（ハ）を必要に応じて開閉し、車高調整
機構付きサスペンション（１０ａ）、（１０ｂ）を介し
て車体（１）の車高を上げる。車高下げ制御を行なう場
合には、給気弁（イ）を閉じ、排気弁（ホ）を開け、空
気弁脅、（ハ）を必要に応じて開閉する事で、サスペン
ション（１０ａ）、（１０ｂ）を介して車体の高さを下
げる。In the vehicle height adjustment device configured as shown in Fig. 8, the control device reads information from vehicle height sensors (8a), (8b), vehicle speed sensor, etc. and determines whether to start or stop vehicle height adjustment. . When performing vehicle height raising control, operate the compressor or pump (G) as necessary based on the pressure detection signal υ, open the air supply valve (A), close the exhaust valve (2),
The air valves (a) and (c) are opened and closed as necessary to raise the vehicle height of the vehicle body (1) via the suspension with vehicle height adjustment mechanism (10a) and (10b). When performing vehicle height lowering control, close the air intake valve (a), open the exhaust valve (e), and open and close the air valves (c) as necessary to lower the suspension (10a), ( 10b) to lower the height of the vehicle body.

第４図は第８図中の制御回路（２）の内部構成図で、入
力回路に）、０の、（６）、ＣＰ　Ｕ　（＋４　、メモ
リ（財）、出力回路■より構成されている。Figure 4 is an internal configuration diagram of the control circuit (2) in Figure 8, which consists of an input circuit), 0, (6), CPU (+4), memory (goods), and an output circuit. .

次に上記実施例の動作を説明する。Next, the operation of the above embodiment will be explained.

車高センサ（３ａ）　、　（ａｂ）は第１図に示した構
造のもので、車高の変化に対応して、第５図に示したコ
ードを出力するものとする。車高センサ（８ａ）、（８
ｂ）のコード出力は入力回路θ１，０乃を経てＣＰＵ−
に入力される。ＣＰ　Ｌｌ’　Ｈは車体のばね下共振周
波数約１２Ｈｚで規定される車高センサのコードの遷移
速度以上の第１のサンプリング時ＩＮで、車高センサの
コードを読み取る。サンプリング時間はａ　ｍ　ｓない
し９ｍＳが望ましい。ＣＰＵ−は同時に車速センサ（２
）その他の入力゛清報を入力回路■を経て取り込み、車
高の目邸値を判定する。車高センサのコードは、車高の
目標値に応じて、第５図に示す数字Ｎ１〜Ｎ５に変換さ
れ、第１のサンプリング時間毎にＣＰＵｑに取り込まれ
、加算される。この加算された車高センサの数の総和は
、車体のばね上共振周波数の周期よりも長い時間、つま
り第２のサンプリング時間毎に平均化され、平均化され
た結果は順番にメモリ（財）に記憶されてゆく。最新の
平均値の値が記憶された時は、最も古い平均値の内容は
クリアーされる。この第２のサンプリング時間は、車体
のばね上共振周波数約１．４Ｈ２での振動を平均化出来
れば良いので、１秒〜２秒が望ましい。今、車高の目標
値は領域■で、車高が大きくあるいは小さく振動してい
る時の車高の平均値について考える。車高が目操値より
高いと５、目標値で４、低いと−８の数字を取り込み平
均するので、平均値の値は３〜５のイ１ｈとなる。しか
も、平均車高が高ければ、平均値ば５に近づき、低けれ
ば平均値は８に近づく。この平均値の過去Ｎ回までの値
をそれぞれ４捨６人した値と、目標値の４との大小を比
較し、車高調整の囲始、停止を判定する。The vehicle height sensors (3a) and (ab) have the structure shown in FIG. 1, and output the code shown in FIG. 5 in response to changes in vehicle height. Vehicle height sensor (8a), (8
The code output in b) is sent to the CPU- through the input circuit θ1, 0.
is input. CP Ll' H reads the vehicle height sensor code at the first sampling time IN, which is equal to or higher than the vehicle height sensor code transition speed defined by the unsprung resonance frequency of the vehicle body of about 12 Hz. It is preferable that the sampling time is from a mS to 9 mS. The CPU- simultaneously controls the vehicle speed sensor (2
) Other input information is taken in through the input circuit (■) and the target value of the vehicle height is determined. The code of the vehicle height sensor is converted into numbers N1 to N5 shown in FIG. 5 in accordance with the target value of the vehicle height, and is taken into the CPUq and added at every first sampling time. The sum of the added vehicle height sensors is averaged over a period longer than the period of the car body's sprung resonance frequency, that is, every second sampling time, and the averaged results are sequentially stored in memory. will be remembered. When the latest average value is stored, the contents of the oldest average value are cleared. This second sampling time is desirably 1 second to 2 seconds because it is sufficient to average the vibrations at the sprung resonance frequency of about 1.4H2 of the vehicle body. Now, the target value of the vehicle height is in area 2, and we will consider the average value of the vehicle height when the vehicle height is vibrating large or small. If the vehicle height is higher than the visual value, the numbers are 5, 4 is the target value, and -8 is lower than the target value, and the numbers are averaged, so the average value is 1h from 3 to 5. Furthermore, if the average vehicle height is high, the average value approaches 5, and if it is low, the average value approaches 8. This average value of the past N times is compared with the target value of 4 to determine whether to start or stop the vehicle height adjustment.

４よりも過去Ｎ回の平均値がすべて大きければ、車高の
下げ制御を行ない、４よりもＮ回すべての平均値が小さ
ければ車高の上げ制御を行なう。If the average values of all N times in the past are larger than 4, the vehicle height is controlled to be lowered, and if the average values of all N times are smaller than 4, the vehicle height is controlled to be raised.

車高の上げ制御を行なって、最新の車高の平均値が４に
等しいか、４よりも大きくなれば車高制御は停止する。Vehicle height control is performed, and when the latest average value of vehicle heights becomes equal to or greater than 4, vehicle height control is stopped.

また、車高下げ制御を行なって、最新の車高の平均値が
４に等しいか、４以下になれば車高制御は停止する。こ
の様にして、車高を目標４の領域に制御する事が出来る
。Further, when the vehicle height lowering control is performed and the latest average value of the vehicle heights becomes equal to or less than 4, the vehicle height control is stopped. In this way, the vehicle height can be controlled within the target 4 range.

通常の場合、コンプレッサに）の起動は、タンク（イ）
内に設けられた圧力検出器−の信号をもとに制御される
のが普通で、まず車高調整停止中であればタンクに）内
の圧力の値、又、車高上げ制御中であれば、空気弁（ハ
）、■、（２４により連結された空気配管系の圧力の値
が、゛例え゛ば６　ｋｇ／ｃｉ以上９１ｇ／ａｊ以下の
圧力幅に保たれる様に、圧力検出器−の信号そのもので
制御される。Normally, when starting the compressor), the tank (a)
Normally, it is controlled based on the signal from a pressure sensor installed inside the vehicle, first of all, if the vehicle height adjustment is stopped, the pressure inside the tank), and if the vehicle height is being controlled, it is controlled based on the pressure inside the tank. For example, the pressure is detected so that the pressure value of the air piping system connected by the air valve (c), It is controlled by the signal itself from the device.

と゛ころで荷物の積過ぎや乗員の乗り過ぎ等で車高が下
がり、サスペンション（１０ａ）、（１０ｂ）内の空気
ばね室（２）内の空気が圧縮され、空気圧が１０　ｋｇ
／ｃｌｒとなった状態で、車高上げ制御が囲始され、空
気弗化（ハ）、（ハ）が開き、排気弁に）が閉じられて
いる場合を考えると、車高上げ制御以前にコンプレッサ
に）が動いていたか、いなかったかにかかわらず、車高
上げ制御を行なう為には空気ばねの圧力は１ａｋｇ／ｃ
Ａ以上でなければならないので圧力検出器のυの信号は
高圧を示し、コンプレッサに）を停止する。この車高上
げ制御中で、かつ、圧力検出器−の信号が高圧で、コン
プレッサ（財）が回転しない状態、つまり車高調整中で
あるのに車高Ｆａ　Ｍ出来ない膠着状態が第１の規定時
間以上、例えば１０秒以上続いたかどうかは、制御装置
（イ）は容易に判１１ｉ１ｉ出来る。この状態が第１の
規定時間以上９５いたと制御装置（イ）が判断すると、
ただちに強制的にコンプレッサ（４）を起動し圧力をさ
らに上げて、車高上げ制御を再開する。コンプレッサ（
ハ）が回転すれば、圧力は１０に９以上に上げる事が出
来るので、車高が上がり、車高の目標値に到達すれば、
コンプレッサ（財）は停止し空気弁（イ）、（ハ）、に
）が閉じ、車高調整が終了する。これにより前述の肚着
状態を自ら脱出する事が出来て、いかなる荷重において
も、比較的すみやかに車高調整を終了しうる車高；Ｊ７
ｉ’Ｊ’ｌＬ　ｋＺ　ｇ＝が実現出来る。At this point, the vehicle height decreases due to overloading of luggage or overloading of passengers, and the air in the air spring chambers (2) in the suspension (10a) and (10b) is compressed, resulting in an air pressure of 10 kg.
/clr, the vehicle height increase control is started, the air fluoride (c) and (c) are opened, and the exhaust valve () is closed. Regardless of whether the compressor (in the compressor) is running or not, the air spring pressure must be 1 kg/c to control the vehicle height.
Since the pressure must be greater than or equal to A, the pressure detector's υ signal indicates high pressure and the compressor is stopped. The first situation is when the vehicle height is being controlled and the signal from the pressure detector is high and the compressor does not rotate, that is, the vehicle height is being adjusted but the vehicle height cannot be adjusted. The control device (a) can easily determine whether the elapsed time has continued for more than a specified time, for example, more than 10 seconds. When the control device (a) determines that this state has been in this state for more than 95 times,
Immediately, the compressor (4) is forcibly started to further increase the pressure, and the vehicle height raising control is restarted. compressor(
If c) rotates, the pressure can be increased to 10 to 9 or more, so the vehicle height increases and if the target value of vehicle height is reached,
The compressor stops, the air valves (a), (c), and ni) close, and the vehicle height adjustment is completed. This allows the vehicle to escape from the above-mentioned slumped state by itself, and can finish adjusting the vehicle height relatively quickly under any load; J7
i'J'lL kZ g= can be realized.

ところで、荷重が極端に重い場合や、車高センサが故障
した場合や、空気弁（２）、　（Ｉ４．（ハ）の異常の
場合等で、いつまでたっても車高調整が終了しないと、
今度はコンプレッサ（ハ）を停止出来ないので、望気配
管に）の一部が破裂したり、異常な高圧によるシステム
の故障が２次的に発生する危険が考えられる。この槌な
場合には、第２の規定時間例えば数分間経過しても車重
、１上げ制御がイシ止していないかどうかを制御装置（
２）が判断し、そうであれば、コンプレッサに）を停止
し空気はねに）、（ハ）及び（ハ）を閉じて車ｉｈ　Ｎ
、１１整を停止し、例えば図示しない１］告灯やＬＥＤ
を点灯させて運転名にその異常を傍告すれば良い。これ
により異常な空気圧の上昇によるシステムの異常を防止
出来る効果がある。By the way, if the vehicle height adjustment is not completed even if the load is extremely heavy, the vehicle height sensor is broken, or the air valve (2) or (I4.(c)) is abnormal, etc.
Since the compressor (C) cannot be stopped this time, there is a risk that a part of the air supply pipe (C) may rupture or a secondary system failure due to abnormally high pressure may occur. In this case, the control device (
2) Determine, if yes, stop the compressor), close the air splash), (c) and (c) and start the car ih N
, stop the 11th alarm, for example 1] notification lights or LEDs (not shown)
All you have to do is turn on the light to warn you of the abnormality in the operating name. This has the effect of preventing system abnormalities due to abnormal increases in air pressure.

さらに第３図（５艷に示したリリーフ弁を追加し、その
リリーフ圧の設定値を例えば１５　ｋｇ／ｃａの様に許
容上限値に設定しておけば万が一空気圧力が上昇しても
、システムの異７１マは防止出来る効果がある。Furthermore, if you add the relief valve shown in Figure 3 (5) and set its relief pressure to the allowable upper limit, such as 15 kg/ca, even if the air pressure increases, the system It has the effect of preventing 71 problems.

又、リリーフ弁（５樽を追加するよりも、例えば排気弁
に）の梅漬を工夫してその締切り圧力の値を例えばリリ
ーフ圧に設定しておけば、余分なリリーフ−弁（□□□
を％’　Ｉ’＋６することも出来る。Also, if you devise a way to set the cut-off pressure of the relief valve (for example, to the exhaust valve rather than adding 5 barrels) and set the value of the cut-off pressure to the relief pressure, the extra relief valve (□□□
It is also possible to multiply %'I'+6.

〔発明の効果〕〔Effect of the invention〕

以上説明した通り、本発明によガば、車高上げ制御中に
もかかわらず、圧力検出器ｊ５１）の信号が第１の規定
時間以上ＯＮしたままであれば強制的にコンプレッサ（
イ）を回し、圧力を高め車高上げ制御を再開すると云う
簡単な構成で、過積時においても車高調整が可能な車高
調整装置を提供出来る効果がある。さらに、上記車高制
御の再開後に第２の現定時間が経過した場合には無条件
に車高調整が停止し、運転者に警告するか、もしくはリ
リーフ弁もしくはリリーフ弁を兼ねた排気弁を備えると
云う簡単な構成で、異常な圧力上昇を抑え、システムの
安全性を保証する車高調整装置ｔを提供出来る効果があ
る。As explained above, according to the present invention, even though the vehicle height is being controlled, if the signal of the pressure detector j51) remains ON for more than the first specified time, the compressor (j51) is forcibly turned on.
A simple configuration in which the pressure is increased and the vehicle height raising control is resumed by turning (a) is effective in providing a vehicle height adjustment device that can adjust the vehicle height even when the vehicle is overloaded. Furthermore, if the second predetermined time period elapses after the vehicle height control is resumed, the vehicle height adjustment will be stopped unconditionally and the driver will be warned or the relief valve or exhaust valve that also serves as a relief valve will be closed. This simple configuration has the effect of providing a vehicle height adjustment device t that suppresses abnormal pressure rise and guarantees the safety of the system.

なお、上記実施例では車高調整を空気圧を利用して実施
するものについて述べたが、油圧その他の流体であって
も同様の効果が期待出来ることは云うまでもない。In the above embodiment, the vehicle height is adjusted using pneumatic pressure, but it goes without saying that similar effects can be expected using hydraulic pressure or other fluids.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例の車高センサの構成を示す図
、第２図は本発明の一実施例の車高調整機構を構成する
サスペンションの構成を示す図、第３図は本発明の一実
施例の基本構成図、第４図は第３図中の制御回路に）の
内部構成図、第５図は本発明の一実施例の車高センサの
出力と、変換数値を示した図である。 なお、図中（３）は車高センサ、（【Ｑはサスペンショ
ン、ｔ２→は制御装置、（ハ）〜（ハ）は弁、轍はタン
ク、（財）はコンプレッサ、（ホ）は車速センサ、（Ｉ
はメモリ、（ロ）はＣＰＵ１４ｉ１Ｊは圧力検出器であ
る。 代理人　大　岩　増　雄 第１図 Ｊ 第２図 第５図 ｆｉｂ　＝　５　Ｊ Ｎ４−迭　Ｊ Ｎ３＝　３　１ Ｎ２＝　ｌ　２ Ｎ＋＝　３　１FIG. 1 is a diagram showing the configuration of a vehicle height sensor according to an embodiment of the present invention, FIG. 2 is a diagram showing the configuration of a suspension that constitutes a vehicle height adjustment mechanism according to an embodiment of the present invention, and FIG. 3 is a diagram showing the configuration of a vehicle height sensor according to an embodiment of the present invention. FIG. 4 is a basic configuration diagram of an embodiment of the invention, FIG. 4 is an internal configuration diagram of the control circuit in FIG. 3, and FIG. This is a diagram. In the figure, (3) is the vehicle height sensor, ([Q is the suspension, t2→ is the control device, (C) to (C) are the valves, the rut is the tank, (Foundation) is the compressor, and (E) is the vehicle speed sensor. , (I
(b) is a memory, and (b) is a CPU 14i1J is a pressure detector. Agent Masuo Oiwa Figure 1 J Figure 2 Figure 5 fib = 5 J N4-Ten J N3= 3 1 N2= l 2 N+= 3 1

Claims (1)

【特許請求の範囲】 （１ン車輪もしくは車軸に対する車体の高さを複数の領
域に分類し、その分類されたいずれの領域に属するかを
検出する車高センサ、この車高セーンサの出力やその他
の自動車の運転状態を示す各種の人力情報をもとに車高
調整の開始や停止を判定する制御装置、車高調整機構付
きサスペンション、車高上げ制御の動力源となるコンプ
レッサ、車高調整の上げ、下げ停止を制御する為の弁、
及び流体圧力を検出しコンプレッサの起動、停止を判定
する為の圧力検出器を備え、車高調整の上げ制御が開始
されて第１の所定の時間が経過した後にも、圧力検出器
の信号が高圧力の状態を示している場合には圧力検出器
の出力に係わらず上記コンプレッサを起動させるように
したことを特徴とする車高調整装置。 （２）コンプレッサを起動してから第１の所定時間より
長い第２の所定時間経過しても車高センサの出力が車高
の目標値に到達せずに車高調整が停止されない場合には
車高調整を強制的に停止するようにした特許請求の範囲
第（１）項記載の車高調整装置。 （３）コンプレッサを起動してから第１の所定時間より
長い第２の所定時間経過しても、車高センサの出力が車
高の目標に到達せずに車高調整が停止されない場合には
、システムの異常と判断し運転者に警告するようにした
特許請求の範囲第（１）項又は第（２）項記載の車高調
整装置。[Claims] (1) A vehicle height sensor that classifies the height of the vehicle body relative to a wheel or axle into a plurality of regions and detects which of the classified regions it belongs to, the output of this vehicle height sensor, etc. A control device that determines whether to start or stop vehicle height adjustment based on various types of human power information that indicate the vehicle's driving status, a suspension with a vehicle height adjustment mechanism, a compressor that is the power source for vehicle height raising control, Valve for controlling raising and lowering stop,
and a pressure detector for detecting fluid pressure and determining whether to start or stop the compressor, and even after the first predetermined time has elapsed after the start of vehicle height adjustment raising control, the signal from the pressure detector is A vehicle height adjustment device characterized in that the compressor is activated regardless of the output of the pressure detector when a high pressure state is indicated. (2) If the output of the vehicle height sensor does not reach the target value of the vehicle height and the vehicle height adjustment is not stopped even after a second predetermined time period, which is longer than the first predetermined time period, has elapsed since the compressor was started, the vehicle height adjustment is not stopped. A vehicle height adjustment device according to claim 1, wherein vehicle height adjustment is forcibly stopped. (3) If the output of the vehicle height sensor does not reach the target vehicle height and the vehicle height adjustment is not stopped even after the second predetermined time period, which is longer than the first predetermined time period, has elapsed since the compressor was started, the vehicle height adjustment is not stopped. The vehicle height adjustment device according to claim 1 or 2, wherein the vehicle height adjustment device determines that there is an abnormality in the system and issues a warning to the driver.
JP15680283A 1983-08-25 1983-08-25 Car height adjusting device Granted JPS6047715A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15680283A JPS6047715A (en) 1983-08-25 1983-08-25 Car height adjusting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15680283A JPS6047715A (en) 1983-08-25 1983-08-25 Car height adjusting device

Publications (2)

Publication Number Publication Date
JPS6047715A true JPS6047715A (en) 1985-03-15
JPS6256803B2 JPS6256803B2 (en) 1987-11-27

Family

ID=15635637

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15680283A Granted JPS6047715A (en) 1983-08-25 1983-08-25 Car height adjusting device

Country Status (1)

Country Link
JP (1) JPS6047715A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6152508U (en) * 1984-09-11 1986-04-09
JPS61215105A (en) * 1985-03-20 1986-09-24 Tokico Ltd Suspension device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6060938B2 (en) * 2014-06-11 2017-01-18 トヨタ自動車株式会社 Engine control device
JP6060939B2 (en) * 2014-06-11 2017-01-18 トヨタ自動車株式会社 Engine control device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6152508U (en) * 1984-09-11 1986-04-09
JPH039447Y2 (en) * 1984-09-11 1991-03-08
JPS61215105A (en) * 1985-03-20 1986-09-24 Tokico Ltd Suspension device

Also Published As

Publication number Publication date
JPS6256803B2 (en) 1987-11-27

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