CN100371623C - Magnetorheological suspensions damping device for automobile suspension system - Google Patents
Magnetorheological suspensions damping device for automobile suspension system Download PDFInfo
- Publication number
- CN100371623C CN100371623C CNB2004100792492A CN200410079249A CN100371623C CN 100371623 C CN100371623 C CN 100371623C CN B2004100792492 A CNB2004100792492 A CN B2004100792492A CN 200410079249 A CN200410079249 A CN 200410079249A CN 100371623 C CN100371623 C CN 100371623C
- Authority
- CN
- China
- Prior art keywords
- damping
- slave cylinder
- clutch release
- piston
- release slave
- 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 - Fee Related
Links
Images
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
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
Abstract
The invention involving a magnetorheological fluid damping device for automobile suspension system.The magnetic field generator of this damping device consists of permanent magnet and electromagnetic coil.On the top of the damping device,there are guide apparatus and damping regulator,the function of which is that to ensure the damping channel is uniform annular duct and to meet the high-damp requirement in the restoration process and low-damp requirement in the compression process of damper seperately.The current in the electromagnetic coil designs of bi-directional and this controls the magnetic field intersity of the damping channel,decreases the excitation current of the electromagnetic coil,reduces energy consumption and decreases damper fever.On the non-controlling conditions,this damping device has the equivalent characteristics of the traditional shock absorber and can instead the passive shock absorber,after equiping corresponding current controller,this device can regulate the damping characteristics of suspension system,which improves the automobile driving safety and ride comfort.
Description
Technical field
The invention belongs to the automotive suspension new technical field, be specifically related to a kind of automobile suspension system magnetorheological fluid damp device.
Background technique
The main effect of automotive suspension is the Security (control stability) of raising automobile and component and the cargo damage that smoothness (riding comfort), minimizing dynamic load cause.At present, generally adopt the conventional suspension systems of forming by elastic element and damping member on the automobile, this suspension system is to design at specific pavement behavior and automobile operating state, the vibration that produces by the road surface when its essence is by elasticity and damping member consumption and mitigation vehicle driving, and the quiet dynamic characteristic of system immobilizes.Can only guarantee the effectiveness in vibration suppression under design condition, even adopt Optimization Design, improve mechanical structure, its damping property also is limited.Along with the development of freeway net, the speed of automobile has significant improvement, and this suspension system to Hyundai Motor is had higher requirement, and traditional passive suspension system is difficult to solve the contradiction between Security and the travelling comfort.The magnetorheological damping device is the controlled special damping member of a kind of damping, may change damping characteristic according to road and automobile running situation, realizes Security and travelling comfort balance.Under under externally-applied magnetic field, acting on, the viscosity of magnetic flow liquid can present the variation of the order of magnitude at moment (Millisecond), change semisolid even solid into from free-pouring liquid, present controlled yield strength, this variation is reversible, after externally-applied magnetic field disappeared, all physical propertys of magnetorheological materials restored to the original state again naturally, the reversible phase change process of the apparent appearance of viscosity similar " liquid-solid-liquid ".Utilize this controlled flow characteristic, magnetic flow liquid can be with multi-form, constitute good couplant between controller and the final controlling element, become the magnetorheological intelligent damping components and parts of various different structures, utilize controlled MR damper, advanced sensed system and the intelligent controller of DSP are in conjunction with the mechanical structure of automobile suspension system, damping to automotive suspension automatically adjusts, thereby realizes intelligentized semi-active suspension.This is one of effective way of injecting new vitality concerning the automotive industry of China, and the technology content and the market competitiveness that improves automobile product all had crucial meaning.
Compare with electrorheological fluid material, the magnetic flow liquid bill of material reveals following advantage: the operating voltage of magnetic flow liquid device lower (being generally 0～20 volt), and the electrorheological fluid device then requires strong electrical field (to be generally 0～4000KV/mm); Under the action of a magnetic field, the big order of magnitude of shear yield strength that the shear yield strength that the magnetic rheology effect of magnetic flow liquid produces produces under identical power consumption condition than electrorheological fluid; Magnetic flow liquid is looser to the requirement of Environmental Conditions, to producing the insensitive of impurity in the using process.Though the magnetic flow liquid device is widely used in numerous key areas such as civil works structure, mechanical system, automobile, track traffic transportation, aircraft, armament systems, household electric appliance, but because the particularity of automobile suspension system, require low in energy consumption, compression is different with recovery damping force, device volume is confined to the suspension space, the piston rod range must satisfy the requirement of suspension dynamic deflection, therefore, the MR damper of general structure can not meet the demands, and more can not use in suspension system.
Existing disclosed magnetorheological damping apparatus structure is had nothing in common with each other, as U.S. Pat 6311810 " MAGNETORHEOLOGICAL FLUID DAMPER " (magnetic rheological liquid damper), U.S. Pat 6260675 " MAGNETORHEOLOGICAL FLUID DAMPER " (magnetic rheological liquid damper), U.S. Pat 6497309 " MAGNETORHEOLOGICAL DAMPER WITH AN EXTERNAL COIL " (MR damper with external coil).Their employed magnetic field generators are field coil, and are the unidirectional electric current that applies, and are requiring under the situation of medium damping force, need medium electric current [strength, and the time that automotive suspension is worked are more under medium damping condition, so power consumption is bigger; In addition, U.S. Pat 5277281 " MAGNETORHEOLOGICAL FLUID DAMPERS " (magnetic rheological liquid damper) has adopted the floating piston compensator, this compensator is in the piston rod compression process, because the compensation space volume reduces, the damping force of damper increases with the increase of compression stroke.In addition, in compression process, the piston action area is big, and in the recuperation, the piston action area is little, causes compression damping power big and recovery damping force is little, and this damping force with the automobile suspension system requirement is opposite.The latter adopts two extension bar structures, and only the temperature to magnetic flow liquid compensates.The damper of these structures will be used in automobile suspension system, also has improved necessity.
Summary of the invention
The present invention is directed to the deficiency that prior art exists, purpose is to provide a kind of automobile suspension system magnetorheological fluid damp control gear, this device is with the controllable damping medium of magnetic flow liquid as damping control apparatus, under the acting in conjunction of controllable magnetic field generator, when magnetic flow liquid flows in annular damp channel, its flow characteristic (apparent viscosity and shear yield stress) changes rapidly, change the pressure difference between the damper upper and lower cavity, and then realize the damping characteristic of this device is controlled in real time; When the electromagnetic coil of the magnetic field generator of this damping device led to field current, the magnetic flow liquid in the damp channel was in medium magnetized state by permanent magnet magnetization, and the desired damping value of the passive suspension of automobile is satisfied in the damping of damper, is equivalent to the passive damping device; Electric current in the electromagnetic coil is by bi-directional design, and the magnetic field that electromagnetic coil produces increases or reduce the magnetic intensity of permanent magnet respectively, realizes the control to magnetic intensity in the damp channel; By design guider and damper regulator are arranged, guarantee that damp channel is a uniform annular pass and satisfies the big and little requirement of compression process damping of damper recuperation damping; By being provided with compensator, the Volume Changes of compensation damper rod and the magnetic flow liquid volume that the damper operating temperature causes change.
Technological scheme of the present invention is as follows:
Automobile suspension system magnetorheological damping control gear, comprise clutch release slave cylinder, piston assembly, compensator and seal arrangement, be full of magnetic flow liquid in the clutch release slave cylinder, and be divided into up and down two chambeies by piston assembly, leave damp channel between piston assembly and the work casing wall, compensator is positioned at the clutch release slave cylinder bottom, and the end of clutch release slave cylinder is sealed by seal arrangement, and this is similar to existing magnetorheological damping control gear.The piston assembly of this device comprises box type piston bar, guider and piston magnetic field generator, piston rod and guider and magnetic field generator are combined, guider is connected with piston magnetic field generator and piston rod are coaxial, the coaxality requirement is arranged between them, can guarantee that like this size and the Magnetic field distribution of the annular pass of damper is uniform.The lighting outlet of electromagnetic coil passes by the center of piston rod, is provided with the damping hole that is communicated with damp channel and clutch release slave cylinder epicoele in the guider body.
Described piston magnetic field generator is made up of permanent magnet, electromagnetic coil, end magnetic core, inner magnetic core and outer magnetic core.Permanent magnet is placed electromagnetic coil, make both magnetic intensity carry out vector addition and control magnetic intensity in the damper passage.This set can effectively reduce the power consumption of magnetorheological damping control gear.When electromagnetic coil was not switched on, because the effect of permanent magnet, the magnetic intensity in the annular damp channel was in moderate magnetic field intensity; When the magnetic direction of magnetic field that electric current in the coil produces and permanent magnet is identical, the magnetic intensity increase in the annular damp channel; Otherwise the magnetic intensity in the annular damp channel reduces.Realize the flow characteristic control of magnetic rheological body in the annular damp channel like this, and then the damping characteristic of control damping device.The purpose that permanent magnet is set in magnetic field generator is, the damping characteristic that does not add the damping characteristic of control damper during electric current and traditional automobile absorber is suitable, can reduce the energy consumption of damper effectively, the damping characteristic of the damping characteristic of while damper when control system breaks down and traditional automobile absorber is suitable, and automobile also can safety traffic.The inner magnetic core of magnetic field generator and outer magnetic core are respectively by piston rod with clutch release slave cylinder is double does, and clutch release slave cylinder can guarantee the structural strength of clutch release slave cylinder and the manufacture cost of reduction damper as the constituent element of magnetic circuit.Damp channel the end magnetic core and outside between the magnetic core, help reducing the magnetic resistance and the hysteresis loss of magnetic circuit like this, reduce the magnetic circuit heating that eddy current causes.Current design in the electromagnetic coil is two-way, less power consumption and the heating that helps reducing damper of electric current like this.
Described guider is made up of guider body and piston ring, and piston ring will guarantee that damp channel is a uniform annular pass.The double again damper regulator of doing of guider body.Guider body upper-end surface is provided with damping force and regulates valve block and Regulation spring, damping force is regulated valve block and is sheltered from the intrinsic a part of damping hole of guider, its effect is by the damping force in adjusting recovery of damping adjusting valve block and the compression process, satisfies the big and little requirement of compression process damping of damper recuperation damping.When piston rod moved upward (recuperation), valve block was closed a part of damping hole under the effect of spring, and it is big to realize that magnetic flow liquid flows into the cavity of resorption resistance from the damper epicoele; When piston rod moves downward (compression process), valve block overcomes the active force of spring under the effect of following cavity pressure, pent damping hole is opened, and it is little to realize that magnetic flow liquid flows into the epicoele resistance from the damper cavity of resorption, satisfies the requirement of automotive suspension to damper characteristics.The damping force of magnetorheological damping control gear is the damping force that damping hole produced of guider body and the stack of the controllable damping force that annular damp channel produces.
Described compensator comprises recuperation valve, compensator housing, compensation air bag.Recuperation valve is fixed on the top of compensator housing, and it is two to mobile damping characteristic difference.Be provided with opening in the recuperation valve, be communicated with compensator housing inner chamber and clutch release slave cylinder cavity of resorption.The recuperation valve upper-end surface is provided with damping and regulates valve block and holddown spring, covers in a part of opening.Be provided with the compensation air bag in the compensator housing, fill industrial nitrogen in the compensation capsule, surround by magnetic flow liquid outside it.The effect of compensator is that the Volume Changes of compensation damper rod and magnetic flow liquid volume that the damper operating temperature causes change.When piston rod moved upward, cavity pressure reduced under the clutch release slave cylinder, because the impetus of compensation air bag, the check valve sheet of recuperation valve is opened, and by flowing to the clutch release slave cylinder cavity of resorption in the compensator shell, this moment, flow resistance was little by recuperation valve for magnetic rheological body; When piston rod moves downward, cavity pressure increases under the clutch release slave cylinder, overcome the impetus of air bag, the check valve sheet of recuperation valve is closed, magnetic rheological body is flowed in the compensator shell by the clutch release slave cylinder cavity of resorption by special-purpose recuperation valve inner aperture, this moment, flow resistance was big, made magnetic rheological body fully fill the clutch release slave cylinder epicoele.The impetus of air bag to a certain extent, can prevent the sedimentation of magnetic rheological body to the secondary floating effect of magnetic rheological body.
Described seal arrangement is installed in the upper end of clutch release slave cylinder, has guide function, and it is made up of guide sleeve, rubber sealing boot, seal retainer ring, and guide sleeve adopts seal retainer ring to fix, and makes it coaxial with the clutch release slave cylinder endoporus.Seal retainer ring is embedded on the inner convex platform of clutch release slave cylinder, and the outward flange of seal retainer ring is provided with opening, its role is to magnetic rheological body and by aperture seal ring is produced radial pressure, improves sealability.The peripheral edge portion of the inside annular flange pressed sealing device of clutch release slave cylinder.
This damping device is a monotubular formula structure, do not adding under the condition of control, it is the suitable damper of a kind of and traditional vibration-damper characterist, can replace passive vibration damper to use fully, mix corresponding current controller, damping characteristic that can the real-time regulated suspension system, to improve ride safety of automobile and smoothness, its concrete advantage performance is as follows:
(1) the permanent magnet magnetic field generator is placed the coil magnetic field generator, make both magnetic intensity carry out vector addition and control magnetic intensity in the damper passage, electric current in the field coil is two-way, and electric current is less, has reduced the power consumption of magnetorheological damping device.
(2) this damping device is a monotubular formula structure, the work cylinder barrel of damper is as the constituent element of magnetic circuit, employing has the low carbon steel of higher magnetic saturation intensity and broad magnetic history and makes, so both guaranteed mechanism's intensity of damper, reduce the magnetic resistance and the hysteresis loss of magnetic circuit, reduce the magnetic circuit heating that eddy current causes, can increase the regulation range of damper simultaneously.
(3) the guider inside of piston upper end is provided with damper regulator, its effect is by the damping force in adjusting recovery of damping adjusting valve block and the compression process, can reach the big and little purpose of compression process damping of damper recuperation damping, satisfy the requirement of automotive suspension damper characteristics.
(4) compensator shell top is equipped with two to the mobile different recuperation valve of damping characteristic, the Volume Changes of compensation damper rod and the magnetic flow liquid volume that the damper operating temperature causes change, also reach the big and little purpose of compression process damping of damper recuperation damping, satisfy the requirement of automotive suspension damper characteristics.
(5) be provided with guide sleeve in the seal arrangement, the outward flange of positioning ring is provided with equally distributed aperture, makes magnetic rheological body produce radial pressure by aperture to seal ring, improves sealability.
(6) piston and compensator structure are simple, have lowered the damper manufacture cost.
Description of drawings
Fig. 1 is the overall construction drawing of magnetorheological damping device of the present invention
Fig. 2 is the guider of magnetorheological damping device and the schematic diagram of magnetic field generator
Fig. 3 is the compensator principle and the installation diagram of magnetorheological damping device
Fig. 4 is the sealing principle and the guiding figure of magnetorheological damping device
Embodiment
Further describe this present invention below with reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4:
With reference to Fig. 1, automobile suspension system magnetorheological damping control gear involved in the present invention is a monotubular formula damper, the lower end of clutch release slave cylinder 9 is welded with bottom 31, rubber sealing boot 3, the guide sleeve 4 with guide function installed in the upper end of clutch release slave cylinder 9, dress piston assembly 19 in the clutch release slave cylinder 9, piston assembly 19 is divided into two chambeies up and down with clutch release slave cylinder 9, leaves damp channel 18 between piston assembly and work casing wall.Compensator is established in clutch release slave cylinder 9 bottoms.
Referring to Fig. 1 and Fig. 2, piston assembly 19 comprises box type piston bar 2, guider and piston magnetic field generator, guider and piston magnetic field generator are by 2 coaxial connections of piston rod, the lighting outlet 1 of the electromagnetic coil of piston magnetic field generator passes by the center hole 17 of piston rod 2, is provided with the damping hole 11,14 that is communicated with damp channel 18 and clutch release slave cylinder epicoele in the guider.When piston rod 2 moves up and down, flow in the damp channel 18 of magnetic flow liquid in the clutch release slave cylinder 9 between piston and clutch release slave cylinder, under the acting in conjunction of electromagnetic field that electromagnetic coil 21 produces and permanent magnet 46, the flowing state of magnetic field control magnetic flow liquid in damp channel that magnetic field generator produces, thereby controlled the pressure difference between the damper clutch release slave cylinder upper and lower cavity, the damping force of magnetorheological damping device has been controlled.
Wherein, guider is made up of guider body 16, piston ring 15, also double as damper regulator body.Guider body 16 is fixed on the box type piston bar 2.Can regulate damping hole 14,11 is arranged on the guider body 16, the upper-end surface also is provided with damping force and regulates valve block 13 and Regulation spring 12, when restoring, piston rod 2 regulates valve block 13 under the effect of Regulation spring 12, damping hole 14 is closed, magnetic flow liquid can only flow into controllable damping passage 18, flow direction 48 by damping hole 11; Regulate under the effect of valve block 13 at magnetic flow liquid when piston rod 2 compressions, damping hole 14 is opened, and magnetic flow liquid can only flow into clutch release slave cylinder epicoele, flow direction 49 by opening 11 and opening 14; The effect of She Zhiing is to improve the damping force of damper in recuperation like this, reduces the damping force of damper in compression process, satisfies the requirement of automotive suspension to damping force.
Magnetic field generator is that piston rod 2 and outer magnetic core are that clutch release slave cylinder 9 etc. is formed by permanent magnet 46, electromagnetic coil 21, end magnetic core 19, inner magnetic core.End magnetic core 19 and outer magnetic core are the damp channel 18 that the gap between the clutch release slave cylinder 9 constitutes two identical annulars of physical dimension, and the end of end magnetic core 19 is designed to fillet 47, are beneficial to the magnetic flow liquid circulation.By the magnetic line of force that closes magnetic field 22 that permanent magnet 46 and electromagnetic coil 21 produce, can satisfy the design criterion of magnetorheological device: the flow direction of magnetic flow liquid in damp channel is vertical with the magnetic line of force direction of externally-applied magnetic field.The lighting outlet 1 of electromagnetic coil 21 is drawn by the center hole in fairlead 23 and the piston rod 17, adopts epoxy sealing in piston base, adopts end cap 24 simultaneously and compresses nut 44 protection lighting outlet and epoxy sealings.The outside of electromagnetic coil 21 adopts protecting jacket 20 to prevent that magnetic flow liquid to the washing away of coil, making magnetic field pass through damp channel 18.It is on the inner magnetic core that permanent magnet 46 and end magnetic core 19 are fixed on piston rod 2, compresses the back and adopts annular solder 45 to guarantee the relative position of piston.Guider body 16 should be coaxial after installing with end magnetic core 19, otherwise will cause damp channel 18 inhomogeneous.
Referring to Fig. 1 and Fig. 3, the compensator of magnetorheological damping device involved in the present invention is made up of recuperation valve 38, compensator housing 28, compensation air bag 27, recuperation valve support circle 26 and recuperation valve retainer ring 25 etc.Be provided with two circle openings 39 and 40 in the recuperation valve 38, by pivot pin fixedly damping regulate valve block 41, valve block 41 is regulated in damping holddown spring 42, by recuperation valve support circle 26 and recuperation valve retainer ring 25, recuperation valve 38 is fixed on the top of compensator housing 28, adopts the riveted joint mode to fix 43.Be provided with compensation air bag 27 in the compensator housing 28, compensation air bag 27 is fixed on the clutch release slave cylinder bottom 31 by nut 32, be provided with seal ring 30 between attaching nut 33 and the bottom 31 and prevent that magnetic flow liquid from leaking, attaching nut 33 inside is provided with unidirectional gas charging valve 36, fill industrial nitrogen in the compensation air bag 27, fill up epoxy resin 34 in bottom 31 rear ends, further improve sealability.When piston rod 2 moved downward (compression process), magnetic flow liquid entered in the compensator housing 28, and under magnetic flow liquid and spring 42 effects, opening 40 is closed, and its flow resistance is big; When piston rod 2 moved upward (recuperation), under the promotion of compensation air bag, magnetic flow liquid was by the inner clutch release slave cylinder cavity of resorption that flows into of compensator shell, and opening 40 is opened, and its flow resistance is little.Its effect is by the damping force in damping compensation valve regulation recovery and the compression process, satisfies the big and little requirement of compression process damping of damper recuperation damping.
Referring to Fig. 1 and Fig. 4, the sealing guiding device of magnetorheological damping device involved in the present invention is made up of guide sleeve 4, rubber sealing boot 3, seal retainer ring 7 etc.Guide sleeve 4 is located by seal retainer ring 7, and is enclosed within on the piston rod 2, and guide sleeve internal surface 6 scribbles teflon, and its purpose is in the friction that reduces between guide sleeve and the piston rod.The outer rim of seal retainer ring 7 is embedded on the inner convex platform of clutch release slave cylinder 9, and the outward flange of seal retainer ring 7 is provided with opening 8.The top of guide sleeve 4 is provided with the sealing inclined-plane, cooperates with rubber sealing boot 3.Between guide sleeve 4 and the clutch release slave cylinder 9 and and rubber sealing boot 3 outer rims between leave the space 50 and 51 that holds magnetic flow liquid, be communicated with the clutch release slave cylinder epicoele by the opening on opening on the guide sleeve 5 and the seal retainer ring 8.Clutch release slave cylinder 9 designs a crimping 52 when sealing at the top, makes and realizes sealing between clutch release slave cylinder 9 and the rubber sealing boot.When piston rod 2 moved upward (recuperation), magnetic flow liquid process opening 8, opening 5 entered the outer rim space 51 of rubber sealing boot, and seal ring is produced radial pressure, and sealing effect is increased.
Claims (4)
1. magnetorheological suspensions damping device for automobile suspension system, comprise clutch release slave cylinder, piston assembly, compensator and seal arrangement, clutch release slave cylinder is divided into two chambeies up and down by piston, be full of magnetic flow liquid in it, leave damp channel between piston assembly and work casing wall, connect two chambeies up and down of clutch release slave cylinder, compensator is arranged at the bottom of clutch release slave cylinder, and the end is sealed by seal arrangement; Piston assembly comprises box type piston bar, guider and piston magnetic field generator, guider is connected by piston rod is coaxial with the piston magnetic field generator, the lighting outlet of the electromagnetic coil of piston magnetic field generator passes by the center of piston rod, is provided with the damping hole that is communicated with damp channel and clutch release slave cylinder epicoele in the guider; It is characterized in that: described piston magnetic field generator is made up of permanent magnet, electromagnetic coil, end magnetic core, inner magnetic core and outer magnetic core, permanent magnet places electromagnetic coil, by the double inner magnetic core of doing of piston rod, clutch release slave cylinder is made outer magnetic core, damp channel the end magnetic core and outside between the magnetic core; Current design in the described electromagnetic coil is two-way.
2. magnetorheological suspensions damping device for automobile suspension system according to claim 1, it is characterized in that: guider is made up of guider body and piston ring, the double again damper regulator of doing of guider body, guider body upper-end surface is provided with damping force and regulates valve block and Regulation spring, and damping force is regulated valve block and sheltered from the intrinsic a part of damping hole of guider.
3. magnetorheological suspensions damping device for automobile suspension system according to claim 1 is characterized in that: compensator comprises recuperation valve, compensator housing, compensation air bag; Recuperation valve is fixed on the top of compensator housing, is provided with opening in the recuperation valve, is communicated with compensator housing inner chamber and clutch release slave cylinder cavity of resorption, and the recuperation valve upper-end surface is provided with damping and regulates valve block and holddown spring, covers in a part of opening; Be provided with the compensation air bag in the compensator housing, fill industrial nitrogen in the compensation air bag, surround by magnetic flow liquid outside it.
4. magnetorheological suspensions damping device for automobile suspension system according to claim 1, it is characterized in that: the seal arrangement with guide function is installed in the upper end of clutch release slave cylinder, comprise guide sleeve, rubber sealing boot, seal retainer ring, seal retainer ring is embedded on the inner convex platform of clutch release slave cylinder, the seal retainer ring outward flange is provided with opening, guide sleeve is fixed by seal retainer ring, is enclosed within on the piston rod peripheral edge portion of the inside annular flange pressed sealing device of clutch release slave cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100792492A CN100371623C (en) | 2004-05-28 | 2004-09-16 | Magnetorheological suspensions damping device for automobile suspension system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200410022656.X | 2004-05-28 | ||
| CN200410022656 | 2004-05-28 | ||
| CNB2004100792492A CN100371623C (en) | 2004-05-28 | 2004-09-16 | Magnetorheological suspensions damping device for automobile suspension system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1603651A CN1603651A (en) | 2005-04-06 |
| CN100371623C true CN100371623C (en) | 2008-02-27 |
Family
ID=34679741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100792492A Expired - Fee Related CN100371623C (en) | 2004-05-28 | 2004-09-16 | Magnetorheological suspensions damping device for automobile suspension system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100371623C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278412A (en) * | 2011-07-08 | 2011-12-14 | 华侨大学 | Shear type magnetorheological buffer compensator |
| CN102297233A (en) * | 2011-08-31 | 2011-12-28 | 谢宁 | Single-ended magnetorheological damper |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101218450B (en) * | 2005-07-29 | 2010-12-15 | 香港中文大学 | Magnetorheological fluid device, method for minimizing cavitation of the magnetorheological fluid device and railway vehicle suspension system |
| CN100340794C (en) * | 2005-08-04 | 2007-10-03 | 浙江大学 | Magnetorheological intelligent vibration damper for minisize automobile |
| CN1952429B (en) * | 2005-10-17 | 2010-09-08 | 武汉理工大学 | Method for adjusting hysteresis effect of full-scale magnetorheological fluid (MR) damper |
| CN100482550C (en) * | 2006-11-03 | 2009-04-29 | 中国科学院电工研究所 | Shock reducing method for super conductive magnet |
| CN102235456B (en) * | 2010-04-26 | 2013-11-06 | 京西重工股份有限公司 | Double-seal rod guidance assembly with low-friction disc |
| CN102745038A (en) * | 2011-04-19 | 2012-10-24 | 赵文志 | Shock-absorbing device for vehicle |
| CN102588497B (en) * | 2011-12-12 | 2013-12-18 | 山东大学 | Electromagnetism and magnetorheological fluid mixed shock absorber |
| JP5852468B2 (en) * | 2012-02-24 | 2016-02-03 | Ｋｙｂ株式会社 | Magnetorheological fluid shock absorber and coil assembly manufacturing method used therefor |
| CN102678800B (en) * | 2012-05-23 | 2013-12-11 | 谭晓婧 | Plate-type damper of single-outlet rod magnetorheological elastomer |
| CN103062275B (en) * | 2013-01-16 | 2015-03-04 | 谢宁 | Gapped magneto-rheological damper with single piston rod out |
| CN103241095B (en) * | 2013-05-31 | 2015-05-13 | 山东理工大学 | Control algorithm of automotive magneto-rheological semi-active suspension system and real-time optimal current |
| CN103511546B (en) * | 2013-10-22 | 2015-06-10 | 袁显举 | Automobile magneto-rheological absorber based on multistage circumferential flow mode |
| CN103867630A (en) * | 2014-04-02 | 2014-06-18 | 合肥工业大学 | Magnetorheological energy absorber with failure-safety performance |
| CN104495567B (en) * | 2014-12-15 | 2017-05-31 | 重庆和航科技股份有限公司 | Self adaptation reduces the safe elevator system of damping force |
| CN105867210B (en) * | 2016-03-17 | 2018-11-13 | 武汉理工大学 | A kind of compensating control method of viscoelastic material temperature softening effect |
| CN107314077B (en) * | 2017-07-13 | 2023-01-24 | 盐城市步高汽配制造有限公司 | Double-cylinder magneto-rheological damper with inner and outer double coils |
| CN107387487B (en) * | 2017-08-18 | 2018-11-13 | 武汉华液传动制造有限公司 | Without external oil sources formula oil leakage self compensation oil cylinder and tight locking method and method of self compensation |
| CN108087481B (en) * | 2018-01-17 | 2023-06-16 | 湖北汽车工业学院 | Magnetorheological fluid shock absorber with independently and continuously regulated restoring damping force and compressing damping force |
| CN108194569B (en) * | 2018-02-06 | 2019-08-06 | 山东交通学院 | MR vibration damper |
| CN108612711B (en) * | 2018-03-23 | 2019-12-13 | 燕山大学 | Vibration damping device for hydraulic pipeline system |
| CN108571552B (en) * | 2018-07-25 | 2019-06-18 | 上海大学 | A kind of adjustable single-degree-of-freedom damper of rigidity |
| DE112019004782T5 (en) * | 2018-09-25 | 2021-09-09 | Hitachi Astemo, Ltd. | Suspension control device and electro-rheological damper |
| IT201800020989A1 (en) * | 2018-12-24 | 2020-06-24 | Sistemi Sospensioni Spa | Compensation for the thermal effect in a vehicle suspension system. |
| CN109602152A (en) * | 2018-12-29 | 2019-04-12 | 漳州卫生职业学院 | Flask brush |
| CN109991016B (en) * | 2019-03-07 | 2020-09-25 | 江苏大学 | Magnetorheological damping automobile roller test bed and control method thereof |
| CN110001342B (en) * | 2019-04-15 | 2020-08-07 | 合肥工业大学 | Magnetorheological balance suspension with controllable transmission torque and control method thereof |
| CN113586648A (en) * | 2021-08-06 | 2021-11-02 | 重庆大学 | Bidirectional independent valve magnetorheological damper |
| CN114607727B (en) * | 2022-03-09 | 2023-04-07 | 浙江师范大学 | Magnetorheological fluid automobile bumper |
| CN115992860B (en) * | 2023-03-20 | 2023-06-06 | 泰州市荣贵机械制造有限公司 | Adjustable damper |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5277281A (en) * | 1992-06-18 | 1994-01-11 | Lord Corporation | Magnetorheological fluid dampers |
| US6311810B1 (en) * | 1999-10-21 | 2001-11-06 | Delphi Technologies, Inc. | Magnetorheological fluid damper |
| CN1381361A (en) * | 2001-04-13 | 2002-11-27 | 中国科学技术大学 | Linear magnetorheologic liquid damper for vehicle |
| US6497309B1 (en) * | 2001-08-13 | 2002-12-24 | Delphi Technologies, Inc. | Magneto-rheological damper with an external coil |
| CN2551806Y (en) * | 2002-06-26 | 2003-05-21 | 重庆大学 | Magnetic rheological liquid vibration-damper for automobile |
| CN1493798A (en) * | 2002-11-01 | 2004-05-05 | 玲 邱 | New type electro magnetic rheological fluid piston component part |
-
2004
- 2004-09-16 CN CNB2004100792492A patent/CN100371623C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5277281A (en) * | 1992-06-18 | 1994-01-11 | Lord Corporation | Magnetorheological fluid dampers |
| US6311810B1 (en) * | 1999-10-21 | 2001-11-06 | Delphi Technologies, Inc. | Magnetorheological fluid damper |
| CN1381361A (en) * | 2001-04-13 | 2002-11-27 | 中国科学技术大学 | Linear magnetorheologic liquid damper for vehicle |
| US6497309B1 (en) * | 2001-08-13 | 2002-12-24 | Delphi Technologies, Inc. | Magneto-rheological damper with an external coil |
| CN2551806Y (en) * | 2002-06-26 | 2003-05-21 | 重庆大学 | Magnetic rheological liquid vibration-damper for automobile |
| CN1493798A (en) * | 2002-11-01 | 2004-05-05 | 玲 邱 | New type electro magnetic rheological fluid piston component part |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278412A (en) * | 2011-07-08 | 2011-12-14 | 华侨大学 | Shear type magnetorheological buffer compensator |
| CN102278412B (en) * | 2011-07-08 | 2013-07-17 | 华侨大学 | Shear type magnetorheological buffer compensator |
| CN102297233A (en) * | 2011-08-31 | 2011-12-28 | 谢宁 | Single-ended magnetorheological damper |
| CN102297233B (en) * | 2011-08-31 | 2012-11-07 | 谢宁 | Single-ended magnetorheological damper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1603651A (en) | 2005-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100371623C (en) | Magnetorheological suspensions damping device for automobile suspension system | |
| CN104930112B (en) | One kind confession energy damping adjustable damping device | |
| CN102889332B (en) | A kind of magnetorheological damper for automotive suspension | |
| CN103032503B (en) | Semi-active suspension energy feedback device of hybrid electric vehicle | |
| CN202048132U (en) | Magnetic rheologic type intelligent vibration damper | |
| CN104373497A (en) | Parallel-connection liquid-electricity feed suspension system | |
| CN105003585B (en) | Variable cross-section piston magneto-rheological vibroshock | |
| CN202790297U (en) | Temperature-controllable magnetorheological fluid bumper | |
| CN108331878B (en) | Series energy feedback type hybrid active suspension actuator and control method thereof | |
| CN2551806Y (en) | Magnetic rheological liquid vibration-damper for automobile | |
| CN106523574B (en) | A kind of multi-state damping adaptive hydro-pneumatic spring and its control method | |
| CN201240242Y (en) | Load sensing variable damping or controllable load sensing variable damping shock mitigation system | |
| CN105156552B (en) | It is a kind of to reclaim the shock absorber of vibrational energy | |
| CN105889397A (en) | Single-piston-rod, double-cylinder and double-coil magneto-rheological absorber | |
| CN202833829U (en) | Magnetorheological fluid shock absorber | |
| CN205089891U (en) | A magnetorheological damper in wheel for electronic round | |
| CN103925324B (en) | The dual-tube shock absorber device of a kind of straight line motor and damped series | |
| CN205298386U (en) | Shock absorbing device | |
| CN104963983A (en) | Coil externally-wrapping magnetorheological fluid damper | |
| CN202790299U (en) | Novel magnetorheological fluid bumper | |
| CN204372028U (en) | Amplitude is correlated with damping characteristic vibration damper | |
| CN204755714U (en) | From adjustable vibration damper of energizing quantity damping | |
| CN104196947B (en) | Vibration damping device and method of stamping machine tool | |
| CN101871504A (en) | Electromagnetic variable force shock absorber | |
| CN201037520Y (en) | Magnetorheological fluids vibration damper for automobile engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 Termination date: 20110916 |