JPS6353328A - Controller for behavior of flow of fluid - Google Patents
Controller for behavior of flow of fluidInfo
- Publication number
- JPS6353328A JPS6353328A JP12852887A JP12852887A JPS6353328A JP S6353328 A JPS6353328 A JP S6353328A JP 12852887 A JP12852887 A JP 12852887A JP 12852887 A JP12852887 A JP 12852887A JP S6353328 A JPS6353328 A JP S6353328A
- Authority
- JP
- Japan
- Prior art keywords
- fluid
- section
- flow cross
- piston
- flow
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 title claims description 22
- 239000000725 suspension Substances 0.000 claims description 2
- 238000013016 damping Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 3
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
- F16F9/46—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
- F16F9/466—Throttling control, i.e. regulation of flow passage geometry
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2401/00—Indexing codes relating to the type of sensors based on the principle of their operation
- B60G2401/10—Piezoelectric elements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Fluid-Damping Devices (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、速度場に位置する流過横断面内の流体の流れ
のふるまいを制御する装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for controlling the behavior of a fluid flow in a flow cross section located in a velocity field.
である前述の形式の装置においては、流動体が使用され
ており、さらに、ピストンを通る負通部内に、あるいは
ピストンとダンパーのシリンダ壁との間の環状室内に、
あるいはダンパーの外側に、流動体の流れのふるまいを
制御する電気的な装置が設けられている。このことによ
って、ダンパーの減衰特性が変化されるようになってい
る。In a device of the above-mentioned type, a fluid is used and furthermore, in the negative passage through the piston or in the annular chamber between the piston and the cylinder wall of the damper.
Alternatively, an electrical device is provided outside the damper to control the behavior of the fluid flow. This allows the damping characteristics of the damper to be changed.
発明が解決しようとする問題点
公知の装置には、はとんどの使用例において電気−流動
効果が少なく、かつ熱的に安定した流動体があまり存在
しないという欠点がある。PROBLEM TO BE SOLVED BY THE INVENTION The known devices have the disadvantage that in most applications they have low electro-rheological effects and the presence of very few thermally stable fluids.
たとえばダンパー内で機械的なエネルギを分裂させよう
とすると、流動体が加熱されかつ機械的に弱くなる。外
部温度の変動も流動体を変化させる。電気的な出力損失
は温度によって指数的に増大し、かつこのことによって
さらに温度が上昇される。このことによって、電気的な
制御出力が著しく必要となる。For example, attempting to split mechanical energy within a damper heats up the fluid and weakens it mechanically. Fluctuations in external temperature also change the fluid. Electrical power losses increase exponentially with temperature, and this further increases the temperature. This requires a significant electrical control output.
問題点を解決するだめの手段
前述の問題点を解決するために講じた本発明の手段は、
流過横断面において、規定された振幅の速度勾配として
流体の速度場に重ねられるような振動を生ぜしめる手段
を有していることである。Means for solving the problems The means of the present invention taken to solve the above-mentioned problems are as follows:
In the flow cross-section, means are provided for generating vibrations which are superimposed on the velocity field of the fluid as a velocity gradient of defined amplitude.
発明の効果
本発明によって得られる利点は、温度変動が流動体の安
定性に影響を及ぼさず、かつ充分な効果を有する膨張す
る流動体が使用されうろことである。Advantages of the Invention The advantage obtained by the invention is that temperature fluctuations do not affect the stability of the fluid and that an expanding fluid may be used with sufficient effectiveness.
実施例
詳しく示さない車両ばね懸架装置のダンパー１は、ダン
パーシリンダ２と、該シリンダ内に取付けられたピスト
ン３とを有している。ピストン３にはピストンロッド４
が固定されており、このピストンロッドの自由端部５は
ダンパーシリンダ２から突出している。ピストンロッド
自由端部５及びダンパーシリンダ２は、車両振動の際に
相対運動する車両部分に取付けられている。DESCRIPTION OF THE PREFERRED EMBODIMENTS A damper 1 of a vehicle spring suspension, not shown in detail, has a damper cylinder 2 and a piston 3 mounted in the cylinder. Piston 3 has piston rod 4
is fixed, and the free end 5 of this piston rod projects from the damper cylinder 2. The free end of the piston rod 5 and the damper cylinder 2 are mounted on vehicle parts that move relative to each other during vehicle vibrations.
ダンパーシリンダ２内には２つの作業室６゜７が形成さ
れておシ、これらの作業室は、膨張する減衰流体を充て
んされていて、かつピストン３によって仕切られている
。膨張する減衰流体は、ピストン３の外壁と、シリンダ
２の内壁との間の流過横断面８によって変化される粘性
を有している。Two working chambers 6 and 7 are formed in the damper cylinder 2 and are filled with an expanding damping fluid and separated by a piston 3. The expanding damping fluid has a viscosity that is varied by the flow cross section 8 between the outer wall of the piston 3 and the inner wall of the cylinder 2.
流過横断面８は、ピストン３がその中央部分において圧
電の面振動子１３として構成されていることによって変
化可能である。このために、２つのぎストン一端部プレ
ート９．１０が電極として構成されており、これらの電
極は、ピストンロッド４内に延びている導線１１．１２
を介して、外側に位置する交流−エネルヤ発生装置１４
に接続されている。The flow cross section 8 can be varied in that the piston 3 is configured as a piezoelectric surface oscillator 13 in its central part. For this purpose, two end plates 9 .
via an externally located alternating current-energetic generator 14
It is connected to the.
下方のピストン作業室７がガス−補償室１５によって制
限されており、さらに、ピストン作業室７とガス−補償
室１５との闇の仕切り個所に仕切りピストン１６が設け
られている。The lower piston working chamber 7 is bounded by a gas compensation chamber 15, and a partition piston 16 is also provided at the dark partition between the piston working chamber 7 and the gas compensation chamber 15.
業室了又は６内に流れる。この場合、流過横断面８が流
体力学的な抵抗を形成する。この抵抗は、面振動子１３
によってピストン直径が変化し、かつこのことによって
小さな振幅のせん断勾配が生ぜしめられるので、変化さ
れる。さらに抵抗は、ピストン３がダンパーシリンダ２
内を運動することによって流過横断面８を流過する流体
、特にこの流体の速度に加えられ又は重ねられる。The work room ends or flows within 6. In this case, the flow cross section 8 forms a hydrodynamic resistance. This resistance is the surface oscillator 13
is changed because the piston diameter changes and this creates a shear gradient of small amplitude. Furthermore, the resistance is that the piston 3 is in the damper cylinder 2
The velocity of the fluid, in particular of this fluid, flowing past the flow cross-section 8 is added to or superimposed by the movement within.
面振動子１３によって変化される流過横断面８及びこの
ことによって生ぜしめられるせん断勾配を、音場又は超
音場によって制御することもできる。別の実施例におい
て、せん断勾配が、厚み振動子によってもトランスバー
ス振動（すなわち軸方向）として与えられることができ
る。The flow cross section 8 changed by the surface transducer 13 and the shear gradient produced thereby can also be controlled by an acoustic field or an ultrasonic field. In another example, the shear gradient can be applied as a transverse vibration (ie, axially) by a thickness oscillator as well.
本発明によれば、流体の強い粘性変化の範囲で振幅、全
一せん断勾配に応じて生せしめられ、かつこのことによ
ってダンパー１の減衰特性が変化されることが重要であ
る。According to the invention, it is important that the amplitude and total shear gradient be generated in the range of strong viscosity changes of the fluid, and that the damping characteristics of the damper 1 are thereby changed.
本発明の装置の別の使用例は以下の通りでおる：
１、 たとえば、比例弁又はサーボ弁をパイロット制御
する際に、液圧機構内の流体流を調量する装置
２、制御可能な流体クラッチ
３、 制御可能なアクチュエータFurther examples of the use of the device of the invention are as follows: 1. Device for metering fluid flow in a hydraulic mechanism, for example when pilot controlling a proportional or servo valve 2. Controllable fluid Clutch 3, controllable actuator
図面は本発明による装置の概略図である。
１・・・ダンパー、２・・・ダンパーシリンダ、３・・
・ピストン、４・・・ピストンロンド、５・・・自由端
部、６．７・・・作業室、８・・・流過横断面、９，１
０・・・ピストン一端部プレート、１１．１２・・・導
線、１３・・・面振動子、１４・・・交流−エネルギ発
生装置、１５・・・ガス−補償室、１６・・・仕切りピ
ストンThe drawing is a schematic illustration of a device according to the invention. 1...damper, 2...damper cylinder, 3...
・Piston, 4... Piston rond, 5... Free end, 6.7... Working chamber, 8... Flow cross section, 9, 1
0...Piston one end plate, 11.12...Conducting wire, 13...Plane vibrator, 14...AC-energy generator, 15...Gas-compensation chamber, 16...Partition piston
Claims (1)
まいを制御する装置において、流過横断面（８）におい
て、規定された振幅の速度勾配として流体の速度場に重
ねられるような振動を生ぜしめる手段を有していること
を特徴とする、流体の流れのふるまいを制御する装置。 ２、流過横断面（８）内の振動が、音場もしくは超音場
によつて生ぜしめられるようになつている特許請求の範
囲第１項記載の装置。 ３、流過横断面（８）内の振動が、圧電部材（１３）に
よつて生ぜしめられるようになつている特許請求の範囲
第１項又は第２項記載の装置。 ４、流体として、せん断勾配によつて増大する粘性を有
する膨張する流体が使用されている特許請求の範囲第１
項から第３項までのいずれか１項記載の装置。 ５、ピストン（３）と、該ピストン（３）を受容するシ
リンダ（２）との間のリング状の流過横断面内に使用さ
れており、しかもこの流過横断面（８）内で半径方向又
は軸方向の振動が生ぜしめられるようになつている特許
請求の範囲第１項から第４項までのいずれか１項記載の
装置。 ６、車両ばね懸架装置のダンパー（１）に使用される特
許請求の範囲第１項から第５項までのいずれか１項記載
の装置。[Claims] 1. In a device for controlling the behavior of a fluid flow in a flow cross section located in a velocity field, the fluid velocity is determined as a velocity gradient of a defined amplitude in a flow cross section (8). A device for controlling the behavior of a fluid flow, characterized in that it has means for producing vibrations that are superimposed on the field. 2. Device according to claim 1, characterized in that the vibrations in the flow cross section (8) are caused by a sound field or an ultrasonic field. 3. Device according to claim 1, characterized in that the vibrations in the flow cross section (8) are generated by piezoelectric elements (13). 4. Claim 1 in which the fluid is an expanding fluid whose viscosity increases with a shear gradient.
The device according to any one of paragraphs 3 to 3. 5. It is used in a ring-shaped flow cross section between the piston (3) and the cylinder (2) that receives the piston (3), and within this flow cross section (8), a radius 5. Device according to claim 1, characterized in that directional or axial vibrations are generated. 6. The device according to any one of claims 1 to 5, which is used for a damper (1) of a vehicle spring suspension system.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3627831.9 | 1986-08-16 | ||
| DE19863627831 DE3627831C2 (en) | 1986-08-16 | 1986-08-16 | Device for influencing the flow behavior of fluids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6353328A true JPS6353328A (en) | 1988-03-07 |
Family
ID=6307539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12852887A Pending JPS6353328A (en) | 1986-08-16 | 1987-05-27 | Controller for behavior of flow of fluid |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS6353328A (en) |
| DE (1) | DE3627831C2 (en) |
| FR (1) | FR2602837B1 (en) |
| GB (1) | GB2193785B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19820569A1 (en) * | 1998-05-08 | 1999-11-11 | Schenck Ag Carl | Valve based on electrorheological or magnetorheological liquids |
| DE10223216B4 (en) * | 2002-05-24 | 2005-10-27 | Siemens Ag | Device for shock absorption by means of a piezoelectric actuator |
| DE102006019307B4 (en) * | 2006-04-26 | 2016-06-09 | Robert Bosch Gmbh | damper |
| DE102007026378A1 (en) | 2007-05-21 | 2008-11-27 | Fludicon Gmbh | vibration |
| DE102008050084B3 (en) * | 2008-10-06 | 2009-11-26 | Benteler Automobiltechnik Gmbh | High frequency excitation compensating method for telescopic vibration damper of motor vehicle, involves deforming upper piezoelectric actuator against lower piezoelectric actuator, when mechanical force acts on lower actuator |
| DE102013003841B4 (en) | 2012-12-21 | 2016-11-24 | Fludicon Gmbh | vibration |
| CN105546020A (en) * | 2016-01-07 | 2016-05-04 | 南京航空航天大学 | Magnetorheological damper with piezoelectric energy recovery function |
| CN106168265A (en) * | 2016-08-11 | 2016-11-30 | 张广 | A kind of energy based on piezoelectric effect is from supplying magneto-rheological vibration damper |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59131049A (en) * | 1983-01-18 | 1984-07-27 | Toyota Motor Corp | Shock absorber |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3442501A (en) * | 1966-02-25 | 1969-05-06 | Martin Marietta Corp | Non-mechanical variable orifice shock absorber |
| FR1515242A (en) * | 1967-01-20 | 1968-03-01 | Vide Soc Gen Du | Improvements to transducers, in particular to pneumatic electric transducers |
| CA983962A (en) * | 1972-01-19 | 1976-02-17 | A/S Raufoss Ammunisjonsfabrikker | Energy absorber |
| NL7301617A (en) * | 1973-02-06 | 1974-08-08 | ||
| FR2281602A1 (en) * | 1974-08-08 | 1976-03-05 | Ucc | NEW METHOD AND SYSTEM FOR ADJUSTING THE FLOW OF A LIQUID IN A TANK |
| DE3024601A1 (en) * | 1980-06-28 | 1982-01-21 | H. Kuhnke GmbH, 2427 Malente | Piezoelectric transducer with signal actuated function - uses electric control signal to switch fluidic pressure flow from one output to another one |
| DE3037078C2 (en) * | 1980-10-01 | 1982-08-12 | Daimler-Benz Ag, 7000 Stuttgart | Electrically controlled actuator |
| JPS57136859U (en) * | 1981-02-18 | 1982-08-26 | ||
| GB2111171B (en) * | 1981-12-09 | 1985-07-31 | Secr Defence | Linear dampers with variable viscosity |
| JPS608540A (en) * | 1983-06-27 | 1985-01-17 | Nissan Motor Co Ltd | Vibration isolating device |
| US4491207A (en) * | 1983-07-15 | 1985-01-01 | Lord Corporation | Fluid control means for vehicle suspension system |
| DE3330205C2 (en) * | 1983-08-20 | 1986-10-23 | Günther 6940 Weinheim Obstfelder | Self-regulating shock absorbers, in particular for motor vehicles |
| DE3433797A1 (en) * | 1984-09-14 | 1986-03-27 | Uni-Cardan Ag, 5200 Siegburg | Elastic bearing with hydraulic damping |
-
1986
- 1986-08-16 DE DE19863627831 patent/DE3627831C2/en not_active Expired - Fee Related
-
1987
- 1987-05-27 JP JP12852887A patent/JPS6353328A/en active Pending
- 1987-08-14 GB GB8719303A patent/GB2193785B/en not_active Expired - Lifetime
- 1987-08-14 FR FR8711610A patent/FR2602837B1/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59131049A (en) * | 1983-01-18 | 1984-07-27 | Toyota Motor Corp | Shock absorber |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2193785B (en) | 1990-03-21 |
| DE3627831A1 (en) | 1988-02-18 |
| GB8719303D0 (en) | 1987-09-23 |
| FR2602837A1 (en) | 1988-02-19 |
| FR2602837B1 (en) | 1990-08-10 |
| DE3627831C2 (en) | 1997-04-03 |
| GB2193785A (en) | 1988-02-17 |
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