JPS5953217A - Hydropneumatic suspension - Google Patents
Hydropneumatic suspensionInfo
- Publication number
- JPS5953217A JPS5953217A JP16368882A JP16368882A JPS5953217A JP S5953217 A JPS5953217 A JP S5953217A JP 16368882 A JP16368882 A JP 16368882A JP 16368882 A JP16368882 A JP 16368882A JP S5953217 A JPS5953217 A JP S5953217A
- Authority
- JP
- Japan
- Prior art keywords
- vehicle height
- valve
- solenoid
- level
- fluid chamber
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は良路走行では車高を低くかつ空気ばねのばね定
数を大きくする一方、悪路走行では車高を高くかつ空気
ばねのばね定数を小さくするようにしたハイドロニュー
マチック懸架装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a hydrostatic system that lowers the vehicle height and increases the spring constant of the air spring when driving on a good road, while increasing the vehicle height and decreasing the spring constant of the air spring when driving on a rough road. This relates to a pneumatic suspension system.
車高が車両の走行性能に大きな影響を及ぼすことは周知
のことである。したがって、車高を道路条件や走行条件
などに最も適した状態に保つことが車両の走行性能を向
上させることになる。It is well known that vehicle height has a large effect on the driving performance of a vehicle. Therefore, maintaining the vehicle height in a state most suitable for road conditions, driving conditions, etc. improves the driving performance of the vehicle.
そこで、従来はハイドロニューマチック懸架装置に配設
された車高選択装置を運転者が車両から降りて切換操作
するようにしたものや、懸架装置の上下方向可動部材の
車体への接近頻度とその振幅から道路状態を検出して、
悪路走行では自動的に車高を高く、良路走行では自動的
に車高を低くするようにしたものが提案されている。Conventionally, the vehicle height selection device installed in a hydropneumatic suspension system was operated by the driver after getting out of the vehicle, and the frequency of approach of the vertically movable member of the suspension system to the vehicle body was Detect the road condition from the amplitude,
A vehicle has been proposed that automatically raises the vehicle height when driving on rough roads, and automatically lowers the vehicle height when driving on good roads.
しかしながら、車高が走行性能に大きく影響を及ぼすの
と同様に、車高が高い時と低い時とでは空気ばねのばね
定数が乗り心地に影響する。一般に、車高を高くする場
合は悪路走行時であるためばね定数を下げて乗り心地を
良くし、また車高を低くする場合は高速走行時であるた
め、ばね定数を大きくして操縦性を良くすることが望ま
しい。However, just as vehicle height has a large effect on driving performance, the spring constant of the air springs has an effect on ride comfort depending on whether the vehicle height is high or low. Generally, when raising the vehicle height, you are driving on rough roads, so lower the spring constant to improve ride comfort, and when lowering the vehicle height, you are driving at high speed, so increase the spring constant to improve maneuverability. It is desirable to improve the
本発明の目的は上述の課題を達成するために、車高の切
換えと同時に空気ばねのばね定数が自動的に調整される
Ｊ：うにしたハイドロニューマチック懸架装置を提供す
ることにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a hydropneumatic suspension system in which the spring constant of an air spring is automatically adjusted at the same time as the vehicle height is changed.
このため、本発明の構成は車高を指定する車高選択スイ
ッチと、液圧シリンダユニツＩ−のシリンダの液量を制
御する電磁方向切換弁と、前記シリンダの作動液の出入
りを制限する絞りとを備えており、悪路走行時車高を高
くし、良路走行時車高を低くするようになっているハイ
ドロニューマチック懸架装置において、各車輪の前記液
圧シリンダユニットのシリンダに選択的に連通ずる複数
個の空気ばねと、前記車高選択スイッチにより前記空気
ばねの作動個数を選択する電磁開閉弁と、前記車高選択
スイッチからの信号により前記電磁開閉弁および前記電
磁方向切換弁を作動する制御装置とを具備することを特
徴とするものである。Therefore, the configuration of the present invention includes a vehicle height selection switch that specifies the vehicle height, an electromagnetic directional control valve that controls the amount of fluid in the cylinder of the hydraulic cylinder unit I-, and a throttle that restricts the flow of hydraulic fluid into and out of the cylinder. In a hydropneumatic suspension system that increases the vehicle height when driving on rough roads and lowers the vehicle height when driving on good roads, a cylinder of the hydraulic cylinder unit of each wheel is selectively a plurality of air springs that communicate with each other, an electromagnetic on-off valve that selects the number of actuated air springs using the vehicle height selection switch, and a signal from the vehicle height selection switch that operates the electromagnetic on-off valve and the electromagnetic directional control valve. The invention is characterized by comprising a control device that operates.
すなわち、本発明では第１図に示すように、運転席に配
置した車高選択スイッチ３１によって悪路では車高を高
く、良路では車高を低く設定するようにする。車高セン
サ１８の信号を積分回路３５で所定の時間だけ積分して
平均的な車高を求め、平均車高信号と前記車高選択スイ
ッチ３１からの指定車高信号とを制御ｌＩＩ装置３６に
おいて比較する。That is, in the present invention, as shown in FIG. 1, a vehicle height selection switch 31 disposed on the driver's seat is used to set the vehicle height high on rough roads and low on good roads. The signal from the vehicle height sensor 18 is integrated by an integrating circuit 35 for a predetermined period of time to obtain an average vehicle height, and the average vehicle height signal and the specified vehicle height signal from the vehicle height selection switch 31 are combined in a control device 36. compare.
そして、制ａｌｌ装置３６の出力により電磁方向切換弁
１２を作動して所定の車高を得るとともに、車高選択ス
イッチ３１の指定車高信号に基づいて制御装置３６によ
り電磁切換弁１０を作動し、空気ばねのばね定数を変更
するものである。Then, the electromagnetic directional switching valve 12 is operated by the output of the control device 36 to obtain a predetermined vehicle height, and the electromagnetic directional switching valve 10 is operated by the control device 36 based on the designated vehicle height signal of the vehicle height selection switch 31. , which changes the spring constant of the air spring.
次に、本発明の構成を実施例に基づいて説明すると、第
２図に示すように、ハイドロニューマチック懸架装置は
シリンダ１とこれに嵌装されるピストン１ｂとからなる
液圧シリンダユニットを備えている。シリンダ１はこの
上端部を車体に適当な手段によって支持される一方、ピ
ストン１ｂにはロッド３が結合され、この下端がコント
ロールアーム４に球継手をもって連結される。コントロ
ールアーム４は基端が前後方向に延びるビンをもって車
体２に支持される一方、先端側が公知のナックルを介し
て車輪５を支持している。Next, the structure of the present invention will be explained based on an embodiment. As shown in FIG. ing. The cylinder 1 has its upper end supported by a suitable means on the vehicle body, while a rod 3 is connected to the piston 1b, and its lower end is connected to a control arm 4 through a ball joint. The control arm 4 has a base end supported by the vehicle body 2 with a pin extending in the longitudinal direction, and a distal end side supports the wheel 5 via a known knuckle.
゛ピストン１ｂを車体に対して弾性支持するための空気
ばね６は、箱体の内部をダイアフラム６Ｃによって液室
６ｂと空気室６ａとに仕切られている。シリンダ１の液
室１ａが空気ばね６の液室６ｂに絞り９を有する通路を
もって接続される。The air spring 6 for elastically supporting the piston 1b with respect to the vehicle body has a box whose inside is partitioned into a liquid chamber 6b and an air chamber 6a by a diaphragm 6C. A liquid chamber 1a of the cylinder 1 is connected to a liquid chamber 6b of the air spring 6 through a passage having a throttle 9.
本発明によれば、空気ばね６の液室６ｂと空気ばね６Ａ
、６Ｂの液室６ｂとを結ぶ通路に電磁切換弁１０が挿入
接続され、通常は空気ばね６と６八が互いに接続される
。そして、ソレノイド１０ａが励磁されると空気ばね６
から空気ばね６Ａ。According to the present invention, the liquid chamber 6b of the air spring 6 and the air spring 6A
, 6B and the liquid chamber 6b are inserted and connected, and the air springs 6 and 68 are normally connected to each other. When the solenoid 10a is energized, the air spring 6
From air spring 6A.
６Ｂが遮断され、逆にソレノイド１０ｂが励磁されると
空気ばね６に空気ばね６Ａ、６Ｂが接続される。When the solenoid 6B is cut off and the solenoid 10b is energized, the air springs 6A and 6B are connected to the air spring 6.
ｗ４２図には左側前輪５の懸架装置だけが示されている
が、右側前輪についても同様の構成となっており、両者
のシリンダ１の液室１ａは導管２７および絞り１１をも
って互いに連通され、左右の高さの均衡を保つとともに
旋回走行時の車体のロールの増加を抑えるようになって
いる。Although only the suspension system for the left front wheel 5 is shown in Figure W42, the right front wheel has a similar configuration, and the liquid chambers 1a of both cylinders 1 are communicated with each other through a conduit 27 and a throttle 11, and the left and right front wheels are connected to each other. This system maintains a balanced height and suppresses the increase in body roll when turning.
５−
前記導管２７はまた電磁方向切換弁１２を介して蓄圧器
１７または液槽１３へ選択的に接続されるようになって
いる。電磁方向切換弁１２は中立位置ボートブロック型
のものであり、通常戻しばねによって中立位置とされ、
ソレノイド１２ｂが励磁されると導管２７が蓄圧器１７
に、ソレノイド１２ａが励磁されると導管２７が液槽１
３にそれぞれ接続される。5- Said conduit 27 is also adapted to be selectively connected via an electromagnetic directional valve 12 to a pressure accumulator 17 or to a liquid tank 13; The electromagnetic directional control valve 12 is a boat block type with a neutral position, and is normally set in the neutral position by a return spring.
When the solenoid 12b is energized, the conduit 27 is connected to the pressure accumulator 17.
When the solenoid 12a is energized, the conduit 27 connects to the liquid tank 1.
3, respectively.
蓄圧器１７へは液圧ポンプ１４から圧液が逆止弁１６を
経て充填される。蓄圧器１７の圧力が所定の値を超える
と、レリーフ弁１５によって液圧ポンプ１４から吐出さ
れる圧液は液槽１３へ直接戻されるようになっている。Pressure fluid is filled into the pressure accumulator 17 from the hydraulic pump 14 via the check valve 16 . When the pressure in the pressure accumulator 17 exceeds a predetermined value, the pressure liquid discharged from the hydraulic pump 14 is directly returned to the liquid tank 13 by the relief valve 15.
図示してないが、左右の後輪についても蓄圧器１７に連
なる導管２８および液槽１３に連なる導管２９が電磁方
向切換弁１２と同様の電磁方向切換弁を介して液圧シリ
ンダユニットのシリンダの液室へ選択的に接続されるよ
うになっている。Although not shown, for the left and right rear wheels, a conduit 28 connected to the pressure accumulator 17 and a conduit 29 connected to the liquid tank 13 are connected to the cylinders of the hydraulic cylinder unit via electromagnetic directional control valves similar to the electromagnetic directional control valve 12. It is designed to be selectively connected to the liquid chamber.
左右のコントロールアーム４に連結部材２２およびビン
を介してＵ字形に折り曲げられたロツド６−
からなるスタどライザ２１が連結され、この中央部分が
ラバーブツシュなどをもって車体に支持される。このス
タビライザ２１は左右の車輪５の上下振動を平衡する働
きをするとともに車高の変化に伴って回動する。スタビ
ライザ２１に結合したＮ２０の先端にロッド１９がａｍ
され、スタビライザ２１の回動に伴うロッド１９の上下
方向の変位がポテンショメータなどからなる車高センサ
１８によって検出される。A star riser 21 consisting of a rod 6- bent into a U-shape is connected to the left and right control arms 4 via a connecting member 22 and a pin, and the center portion of the riser 21 is supported by a rubber bush or the like on the vehicle body. The stabilizer 21 functions to balance the vertical vibrations of the left and right wheels 5, and rotates as the vehicle height changes. A rod 19 is attached to the tip of N20 connected to the stabilizer 21.
The vertical displacement of the rod 19 due to the rotation of the stabilizer 21 is detected by a vehicle height sensor 18 comprising a potentiometer or the like.
次に、本発明装置の作動を説明する。第１図において、
車高選択スイッチ３１はつまみ３１ａを回転することに
より車高をＨ（高）、Ｎ（中）。Next, the operation of the device of the present invention will be explained. In Figure 1,
The vehicle height selection switch 31 changes the vehicle height between H (high) and N (medium) by rotating the knob 31a.
Ｌ（低）の３段階に切換えることができる。It can be switched to three levels: L (low).
制御装置３６は例えばマイクロコンピュータをもって構
成され、車高選択スイッチ３１から指定車高値ＨＨ、Ｈ
Ｎ ＊ ＨＬに相当するデジタル信号を受けて、電磁切
換弁１０に空気ばね６．６Ａ。The control device 36 is configured with a microcomputer, for example, and selects specified vehicle height values HH, H from the vehicle height selection switch 31.
In response to the digital signal corresponding to N*HL, an air spring of 6.6A is applied to the electromagnetic switching valve 10.
６Ｂの切換制御信号を送る。6B switching control signal is sent.
積分回路３５は車高センサ１８からの車高検出信号をマ
イクロコンピュータの指令により所定の時間ごとに積分
してその平均車高ａｈを求める。The integration circuit 35 integrates the vehicle height detection signal from the vehicle height sensor 18 at predetermined time intervals according to instructions from the microcomputer to determine the average vehicle height ah.
マイクロコンピュータは車高選択スイッチ３１がらの指
定車高値と平均車高値りとを比較してＮ磁方向切換弁１
２に制御信号を送り、平均車高値りを指定車高値に近づ
ける。The microcomputer compares the specified vehicle height value of the vehicle height selection switch 31 with the average vehicle height value, and selects the N magnetic direction switching valve 1.
2 to bring the average vehicle height closer to the designated vehicle height.
第３図は上述の制御プログラムの流れ図である。FIG. 3 is a flowchart of the control program described above.
同図において１）１１〜ｐ２３は流れ図の各ステップを
示す。まず、普通の道路を走行する場合は、ｐ１２で運
転者が車高選択スイッチ３１のっまみ３１ａをＮの位置
とし、ｐ１５で車高選択スイッチ３１がらの信号に基づ
いて電磁切換弁１０のソレノイド１０ａ、１０ｂを消磁
したままとし、空気ばね６゜６Ａを作動状態とする。ま
た車高選択スイッチ３１の指定車高値ＨＮをマイクロコ
ンピユー多のメモリに記憶させる。次いで、ＩＪ１７で
車高センサ１８からの車高検出信号を読み取り、これを
ｐ１８で所定の時間だけ積分して平均車高値りを求める
。In the figure, 1)11 to p23 indicate each step of the flowchart. First, when driving on a normal road, the driver sets the knob 31a of the vehicle height selection switch 31 to the N position in p12, and in p15 the solenoid of the electromagnetic switching valve 10 is activated based on the signal from the vehicle height selection switch 31. 10a and 10b remain demagnetized, and the air spring 6°6A is activated. Further, the vehicle height value HN designated by the vehicle height selection switch 31 is stored in the memory of the microcomputer. Next, the vehicle height detection signal from the vehicle height sensor 18 is read at IJ17, and this is integrated for a predetermined time at step 18 to obtain the average vehicle height.
ｐ１９で平均車高値りと先のメモリに記憶した指定車高
値ＨＮとを比較する。平均車高値りが指定車高値ＨＮよ
りも高い場合には、ｐ２０で電磁方向切換弁１２のソレ
ノイド１２ａを励磁し、シリンダ１から作動液を液槽１
３へ戻して車高を低くする。そして、ｐ１９へ戻り、繰
り返しプログラムを実行し、車高を指定車高値ＨＮに近
づける。ｐ１９で平均車高値りが指定車高値ＨＮよりも
低い場合には、ｐ２２で電磁方向切換弁１２のソレノイ
ド１２ｂを励磁し、シリンダ１へ圧液を供給して車高を
高くする。そして、ｐ１９へ戻り、繰り返しプログラム
を実行し、車高を指定車高値ＨＮに近づける。ｐ１９で
平均車高値りが指定車高値ＨＮとほぼ等しくなった場合
には、ｐ２１で電磁方向切換弁１２のソレノイド１２ａ
、１２ｂを消磁した状態としてその車高を維持する。そ
して、ｐ２３でソレノイド１２ａ、１２ｂの消磁状態が
所定の時間経過したか否かを判別する。所定の時間経過
していない場合は時間の経過を持ち、所定の時間経過し
たところでρ１７へ戻り、前述したプログラムを繰り返
し実行する。At p19, the average vehicle height value is compared with the designated vehicle height value HN previously stored in the memory. If the average vehicle height value is higher than the designated vehicle height value HN, the solenoid 12a of the electromagnetic directional control valve 12 is energized in p20, and the hydraulic fluid is transferred from the cylinder 1 to the liquid tank 1.
Return to 3 to lower the vehicle height. Then, return to page 19 and repeatedly execute the program to bring the vehicle height closer to the specified vehicle height value HN. If the average vehicle height value is lower than the specified vehicle height value HN in p19, the solenoid 12b of the electromagnetic directional control valve 12 is energized in p22 to supply pressurized fluid to the cylinder 1 to raise the vehicle height. Then, return to page 19 and repeatedly execute the program to bring the vehicle height closer to the specified vehicle height value HN. If the average vehicle height value becomes almost equal to the designated vehicle height value HN in p19, the solenoid 12a of the electromagnetic directional control valve 12 is activated in p21.
, 12b are demagnetized and the vehicle height is maintained. Then, in p23, it is determined whether or not the demagnetized state of the solenoids 12a and 12b has elapsed for a predetermined period of time. If the predetermined time has not elapsed, the time continues, and when the predetermined time elapses, the process returns to ρ17 and the above-described program is repeatedly executed.
悪路を走行する場合は、ｐＨで運転者が車高選択スイッ
チ３１をＨに切換える。ｐ１４で車高選択９−
スイッチ３１からの信号に基づいて電磁切換弁１０のソ
レノイド１０ｂを励磁し、空気ばね６，６Ａ、６Ｂの全
部を作動状態としてばね定数を小さくする。また車高選
択スイッチ３１の指定車高値ＨＨをメモリに記憶させる
。次いで、ｐ１７で車高センサ１８からの車高検出信号
を読み取り、これをｐ１８で所定の時間だけ積分して平
均車高値りを求める。When driving on a rough road, the driver switches the vehicle height selection switch 31 to H based on the pH. At p14, the solenoid 10b of the electromagnetic switching valve 10 is energized based on the signal from the vehicle height selection 9-switch 31, and all of the air springs 6, 6A, and 6B are activated to reduce the spring constant. Further, the vehicle height value HH specified by the vehicle height selection switch 31 is stored in the memory. Next, in p17, the vehicle height detection signal from the vehicle height sensor 18 is read, and in p18, this is integrated for a predetermined period of time to obtain the average vehicle height.
ｐ１９で平均車高値りと先にメモリに記憶させた指定車
高値ＨＨとを比較する。平均車高値りが指定車高ｆｉＩ
ＨＨよりも高い場合には、ｐ２０で電磁方向切換弁１２
のソレノイド１２ａを励磁し、シリンダ１から作動液を
液槽１３へ戻して車高を高くする。以下前述の場合と同
様にして車高を指定車高値ＨＨに近づける。At p19, the average vehicle height value is compared with the designated vehicle height value HH previously stored in the memory. The average vehicle height is the designated vehicle height fiI
If it is higher than HH, the electromagnetic directional control valve 12 is activated at p20.
The solenoid 12a is energized, and the hydraulic fluid is returned from the cylinder 1 to the fluid tank 13 to raise the vehicle height. Thereafter, the vehicle height is brought closer to the designated vehicle height value HH in the same manner as in the above case.
次に、高速走行に適した良路では、ｐ１３で運転者が車
高選択スイッチ３１をしに切換える。ｐ１６で電磁切換
弁１０のソレノイド１０ａを励磁し、空気ばね６だけを
作動状態としてばね定数を大きくする。また車高選択ス
イッチ３１の指定車高値１０−
１−Ｉ Ｌをメモリに記憶させる。次いで、ｐ１７で車
高センサ１８からの車高検出信号を読み取り、これをｐ
ｌＢで所定の時間だけ積分して平均車高値りを求める。Next, on a good road suitable for high-speed driving, the driver switches the vehicle height selection switch 31 to OFF at p13. At p16, the solenoid 10a of the electromagnetic switching valve 10 is energized, and only the air spring 6 is activated to increase the spring constant. Further, the designated vehicle height value 10-1-IL of the vehicle height selection switch 31 is stored in the memory. Next, at p17, the vehicle height detection signal from the vehicle height sensor 18 is read, and this is sent to p17.
The average vehicle height value is determined by integrating for a predetermined time using lB.
ｐ１９で平均車高値りと先にメモリに記憶された指定車
高値ＨＬとを比較する。平均車高値りが指定車高値ＨＬ
よりも高い場合には、ｐ２０で電磁方向切換弁１２のソ
レノイド１２ａを励磁し、シリンダ１の作動液を液槽１
３へ戻して車高を低くする。以下前述の場合と同様にし
て車高を指定車高値１−ＩＬに近づける。At p19, the average vehicle height value is compared with the designated vehicle height value HL previously stored in the memory. Average vehicle height is designated vehicle height HL
If the temperature is higher than
Return to 3 to lower the vehicle height. Thereafter, the vehicle height is brought closer to the designated vehicle height value 1-IL in the same manner as in the above case.
本発明は上述のように構成したから、良路を高速で走行
する時は車高を低くし、ばね定数を大ぎくしで操縦性を
向上させることができるとともに、悪路走行では車高を
高くし、ばね定数を小さくし、ホイルストロークを有効
に使って乗り心地を向上させることができるという優れ
た効果が得られる。Since the present invention is configured as described above, when driving on a good road at high speed, the vehicle height can be lowered and the spring constant can be increased to improve maneuverability, and when driving on a rough road, the vehicle height can be lowered. The excellent effect of increasing the height, reducing the spring constant, and effectively using the wheel stroke to improve ride comfort can be obtained.
なお、上述の実施例で、液圧シリンダユニットがシリン
ダの両端部にビス１〜ンによって液室が仕切られている
形式の場合には、両端液室を結ぶ通路に絞り９を配設し
、シリンダの上端液室と空気ばね６の液室６ｂとを直接
接続するものとする。In the above-described embodiment, if the hydraulic cylinder unit is of a type in which the liquid chamber is partitioned by screws 1 to 1 at both ends of the cylinder, a throttle 9 is provided in the passage connecting the liquid chambers at both ends. The upper end liquid chamber of the cylinder and the liquid chamber 6b of the air spring 6 are directly connected.
また、上述の実施例では、空気ばねが各シリンダに３個
ずつ配置されているが、第４図に示すように、２個の空
気ばね６，６Ａを設け、普通の道路および高速道路で空
気ばね６だけを作動状態とし、悪路で電磁開閉弁１０Ａ
を開いて空気ばね６゜６八を作動状態とするようにして
もよい。In addition, in the above-mentioned embodiment, three air springs are arranged in each cylinder, but as shown in FIG. With only spring 6 in operation, the electromagnetic on-off valve 10A is operated on rough roads.
Alternatively, the air spring 6.68 may be activated by opening the air spring 6.
さらに、上述の実施例では、車高が３段に切換えられる
ようになっているが、良路と悪路との条件に対応して高
・低２段に切換えるようにし、第４図において良路で空
気ばね６だけを、ＰＡ２８で空ｆｉばね６，６Ａをそれ
ぞれ作動状態とするようにしてもよい。Furthermore, in the above-mentioned embodiment, the vehicle height can be switched to three stages, but it can be changed to two stages, high and low, depending on the conditions of good and bad roads. It is also possible to activate only the air spring 6 at the road and the air springs 6 and 6A at the PA 28, respectively.
第１図は本発明に係るハイドロニューマチック懸架装置
の全体構成を説明するブロック図、第２図は同装置の実
施例を示す構成図、第３図は同装置をマイクロコンピュ
ータによって制御するための流れ図、第４図は本発明の
部分変更実施例を示す構成図である。
１ニジリンダ １ａ：液室 ４：コントロールアーム
５：車輪 ６．６Ａ、６Ｂ：空気ばね １０．１０Ａ：
電磁切換弁 １０ａ、１０ｂ、１２ａ、１２ｂ：ソレノ
イド １２：電磁方向切換弁１３：液槽 １４：液圧ポ
ンプ １８：車高センサ ３１：車高選択スイッチ ３
５：積分回路３６：制御装置
特許出願人 いすり自動車株式会社
代理人 弁理士 山本俊夫
１３−FIG. 1 is a block diagram illustrating the overall configuration of a hydropneumatic suspension system according to the present invention, FIG. 2 is a configuration diagram showing an embodiment of the same device, and FIG. 3 is a block diagram illustrating an embodiment of the same device. Flow chart, FIG. 4 is a block diagram showing a partially modified embodiment of the present invention. 1 Niji cylinder 1a: Liquid chamber 4: Control arm
5: Wheel 6.6A, 6B: Air spring 10.10A:
Electromagnetic switching valve 10a, 10b, 12a, 12b: Solenoid 12: Electromagnetic directional switching valve 13: Liquid tank 14: Hydraulic pump 18: Vehicle height sensor 31: Vehicle height selection switch 3
5: Integral circuit 36: Control device patent applicant: Isuri Motor Co., Ltd. agent, patent attorney Toshio Yamamoto 13-
Claims (1)
ットのシリンダの液量をＭａｌｌする電磁方向切換弁と
、前記シリンダの作動液の出入りを制限する絞りとを備
えており、悪路走行時車高を高くし、良路走行時車高を
低くするようになっているハイドロニューマチック懸架
装置において、各車輪の前記液圧シリンダユニツ、トの
シリンダに選択的に連通する複数個の空気ばねと、前記
車高選択スイッチにより前記空気ばねの作動個数を選択
する電磁開閉弁と、前記車高選択スイッチからの信号に
より前記電磁開閉弁および前記電磁方向切換弁を作動す
る制御装置とを具備することを特徴とするハイドロニュ
ーマチック懸架装置。It is equipped with a vehicle height selection switch to specify the vehicle height, an electromagnetic directional control valve to set the fluid level in the cylinder of the hydraulic cylinder unit to Mall, and a throttle to restrict the flow of hydraulic fluid into and out of the cylinder. In a hydropneumatic suspension system that raises the vehicle height and lowers the vehicle height when driving on good roads, a plurality of air springs selectively communicate with the hydraulic cylinder units and cylinders of each wheel. and a control device that operates the electromagnetic on-off valve and the electromagnetic directional control valve in response to a signal from the vehicle height selection switch. A hydropneumatic suspension system characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16368882A JPS5953217A (en) | 1982-09-20 | 1982-09-20 | Hydropneumatic suspension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16368882A JPS5953217A (en) | 1982-09-20 | 1982-09-20 | Hydropneumatic suspension |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5953217A true JPS5953217A (en) | 1984-03-27 |
| JPH0462884B2 JPH0462884B2 (en) | 1992-10-08 |
Family
ID=15778703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16368882A Granted JPS5953217A (en) | 1982-09-20 | 1982-09-20 | Hydropneumatic suspension |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5953217A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60185613A (en) * | 1984-03-05 | 1985-09-21 | Mazda Motor Corp | Hydropneumatic suspension |
| JPS61129307A (en) * | 1984-11-27 | 1986-06-17 | Nhk Spring Co Ltd | Suspension system for vehicle |
| JPS6260405U (en) * | 1985-10-07 | 1987-04-15 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4898516A (en) * | 1972-03-27 | 1973-12-14 | ||
| JPS5326021A (en) * | 1976-08-19 | 1978-03-10 | Honda Motor Co Ltd | Adjustable suspension for vehicle |
| JPS5682616A (en) * | 1979-12-06 | 1981-07-06 | Honda Motor Co Ltd | Adjuster for car height |
-
1982
- 1982-09-20 JP JP16368882A patent/JPS5953217A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4898516A (en) * | 1972-03-27 | 1973-12-14 | ||
| JPS5326021A (en) * | 1976-08-19 | 1978-03-10 | Honda Motor Co Ltd | Adjustable suspension for vehicle |
| JPS5682616A (en) * | 1979-12-06 | 1981-07-06 | Honda Motor Co Ltd | Adjuster for car height |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60185613A (en) * | 1984-03-05 | 1985-09-21 | Mazda Motor Corp | Hydropneumatic suspension |
| JPH0585366B2 (en) * | 1984-03-05 | 1993-12-07 | Mazda Motor | |
| JPS61129307A (en) * | 1984-11-27 | 1986-06-17 | Nhk Spring Co Ltd | Suspension system for vehicle |
| JPS6260405U (en) * | 1985-10-07 | 1987-04-15 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0462884B2 (en) | 1992-10-08 |
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