CN109501850A - A kind of vibration damping steering wheel and its method for reducing shake - Google Patents
A kind of vibration damping steering wheel and its method for reducing shake Download PDFInfo
- Publication number
- CN109501850A CN109501850A CN201811196547.8A CN201811196547A CN109501850A CN 109501850 A CN109501850 A CN 109501850A CN 201811196547 A CN201811196547 A CN 201811196547A CN 109501850 A CN109501850 A CN 109501850A
- Authority
- CN
- China
- Prior art keywords
- steering wheel
- damping
- control unit
- electronic control
- pressure sensor
- 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
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/04—Hand wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/037—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for occupant comfort, e.g. for automatic adjustment of appliances according to personal settings, e.g. seats, mirrors, steering wheel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/04—Hand wheels
- B62D1/11—Hand wheels incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
Abstract
The present invention provides a kind of vibration damping steering wheel and its method for reducing shake, it is hollow structure inside the steering wheel, is connect inside the steering wheel with pumping system, for filling damping fluid.Several damping spaces interconnected are divided equally by reinforcing rib inside the steering wheel, the steering wheel support rod is hollow structure, and the hollow structure is connected to any damping space.The flowing indention of damping fluid in the adjacent damping space, the damping fluid in a damping space are upper entering and lower leaving, and the damping fluid in the adjacent damping space is bottom in and top out.The pumping system includes water tank, water pump and drainage duct；Closed loop is formed inside the water tank, water pump and steering wheel；Inside at the drainage duct connection water tank and steering wheel grip.The present invention can be effectively reduced the occurrence probability of steering wheel shake, this not only improves the driving comfort of vehicle, while also build comfortable driving environment for driver.
Description
Technical field
The present invention relates to automotive field or vehicle vibration damping field, in particular to a kind of vibration damping steering wheel and its reduction shake
Method.
Background technique
With the fast development of automobile industry, China's car ownership increases year by year, and client is for vehicle NVH
The requirement of (noise, vibration, harshness-vibration, noise, sound vibration roughness) performance is higher and higher.And current vapour
Braking shake, which is complained, in garage's industry has become main automobile problem after sale, by consulting related literatures, it is known that
By braking shake, bring negative effect includes brake pedal vibration, steering wheel vibration, body platform and seat vibration etc..
Currently, being mainly to pass through to improve the dependency structure size of components of brake and right for the solution for braking jitter problem
The parameters such as the rigidity of transmission mechanism of shake are braked to optimize.However, due to for brake structural optimization design and
Cause the research and development cost of vehicle significantly to increase the relevant parameter optimization design of vibration transmission mechanism, is brought to automaker
Huge loss.Meanwhile by consulting lot of documents it is found that steering wheel is shaken in the braking shake many negative effects of bring
It is maximum on being influenced brought by vehicle operating comfort, while being also easier to substantially increase so that driver feels fatigue
The risk of driver's maloperation has severely impacted the driving safety of vehicle.But at present for steering wheel Jitter Attenuation side
The research in face is even insufficient.
Summary of the invention
For the deficiencies in the prior art, the present invention provides a kind of vibration damping steering wheel and its side shaken is reduced
Method can be effectively reduced the occurrence probability of steering wheel shake, this not only improves the driving comfort of vehicle, while also be driving
Person has built comfortable driving environment, reduces driver since vehicle is shaken and the risk of bring maloperation, improves vehicle
Driving safety.
The present invention achieves the above technical objects by the following technical means.
A kind of vibration damping steering wheel, the steering wheel inside is hollow structure, is connect inside the steering wheel with pumping system,
For filling damping fluid.
Further, several damping spaces interconnected, the steering wheel are divided equally by reinforcing rib inside the steering wheel
Support rod is hollow structure, and the hollow structure is connected to any damping space.
Further, in the adjacent damping space damping fluid flowing indention, in a damping space
Damping fluid is upper entering and lower leaving, and the damping fluid in the adjacent damping space is bottom in and top out.
Further, the pumping system includes water tank, water pump and drainage duct；Inside the water tank, water pump and steering wheel
Form closed loop；Inside at the drainage duct connection water tank and steering wheel grip, automatic valve is installed on the drainage duct
Door installs injection control valve door between the water pump and steering wheel.
It further, further include control system, including ECU electronic control unit, first pressure sensor and second pressure pass
Sensor, the first pressure sensor is for detecting the brake pressure that brake is born；The second pressure sensor is used for
Detect pressure at brake pedal lower link；The ECU electronic control unit acquisition first pressure sensor and second pressure sensing
The signal of device judges whether that braking shake occurs by the braking force fluctuation threshold value comparison with setting；When braking shake occurs,
ECU electronic control unit fills damping fluid inside the steering wheel by controlling the pumping system.
A kind of method that vibration damping steering wheel reduces shake, includes the following steps:
The signal of the acquisition of ECU the electronic control unit first pressure sensor and second pressure sensor, first pressure
The pressure value of sensor acquisition is denoted as P1, second pressure sensor acquisition pressure value be denoted as P2；
The lowest threshold K that braking shake occurs is preset in the ECU electronic control unit；
Work as P2When > 0, the ECU electronic control unit control automatic valve is opened；
Work as P2> 0 and P1When > K, the ECU electronic control unit controls the pumping system work, for steering wheel
Interior filling damping fluid；
Work as P2=0 and P1When > K, the ECU electronic control unit controls the pumping system and stops working, and the ECU
Electronic control unit controls automatic valve and closes, for making the damping fluid hold mode in steering wheel；
Work as P2=0 and P1When < K, the ECU electronic control unit control automatic valve is opened, in discharge direction disk
Damping fluid.
Further, the lowest threshold K specifically: K=s × A × p0,
Wherein: s is brake disc thin thickness difference DTV；
A is the piston face product of checking cylinder；
p0For the hydraulic of brake fluid.
Further, the brake disc thin thickness difference DTV takes 15 μm.
The beneficial effects of the present invention are:
1. vibration damping steering wheel of the present invention and its method for reducing shake, can be effectively reduced the hair of steering wheel shake
Raw probability, this not only improves the driving comfort of vehicle, while also having built comfortable driving environment for driver, reduces
Driver improves the driving safety of vehicle since vehicle is shaken and the risk of bring maloperation.
2. vibration damping steering wheel of the present invention and its method for reducing shake, are examined based on exploitation and maintenance cost angle
Consider, structure optimization is carried out compared to for brake system optimizing research for steering wheel, research and development cost has obtained substantially
The reduction of degree, while maintenance cost has also obtained significantly reducing, this will bring biggish warp to automobile manufacturers
Ji benefit.
3. vibration damping steering wheel of the present invention and its method for reducing shake give the meter of ECU setting lowest threshold
Calculation method.
Detailed description of the invention
Fig. 1 is vibration damping steering wheel internal structure chart of the present invention.
Fig. 2 is pumping system of the present invention and control system schematic diagram.
Fig. 3 is the method flow diagram that vibration damping steering wheel of the present invention reduces shake.
Fig. 4 is steering wheel vibration system simplified model schematic diagram of the present invention.
Fig. 5 is the time domain response figure of caused steering wheel shake when braking shake occurs.
In figure:
1- wheel；2- first pressure sensor；3- steering wheel；4- second pressure sensor；5- injection control valve door；6- water
Case；7- water pump；8- field switch；9- drainage duct；10- automatic valve；11-ECU electronic control unit；A- signal transmits road
Diameter；Liquid discharge path in b- steering wheel；Liquid injects path in c- steering wheel.
Specific embodiment
Present invention will be further explained with reference to the attached drawings and specific examples, but protection scope of the present invention is simultaneously
It is without being limited thereto.
It is hollow structure, the steering wheel inside the steering wheel 3 as shown in Figure 1, vibration damping steering wheel of the present invention
3 inside are connect with pumping system, for filling damping fluid.Several interconnect is divided equally by reinforcing rib inside the steering wheel 3
Damping space, 3 support rod of steering wheel is hollow structure, and the hollow structure is connected to any damping space.As shown in figure 1
It is shown, 36 reinforcing ribs are added inside 3 knop of steering wheel, it is adjacent for guaranteeing the intensity requirement of steering wheel
The flowing indention of damping fluid in the damping space, the damping fluid in a damping space are upper entering and lower leaving, phase
Damping fluid in the adjacent damping space is bottom in and top out.
As shown in Fig. 2, the pumping system includes water tank 6, water pump 7 and drainage duct；The water tank 6, water pump 7 and direction
Closed loop is formed inside disk 3；Inside at the drainage duct connection water tank 6 and 3 handle of steering wheel, pacify on the drainage duct
Automatic valve 10 is filled, injection control valve door 5 is installed between the water pump 7 and steering wheel 3.It is stored by one water tank 6 of arrangement
Liquid for being injected into inside the steering wheel 3, and realize by water pump 7 injection of liquid, pass through a field switch 8
To control the working condition of water pump.In view of in steering wheel 3 there are air, in order to facilitate liquid injection and discharge direction disk 3,
A drainage duct 9 is drawn at the knop of steering wheel 3 and is passed into water tank 6, meanwhile, when the shake of steering wheel 3 is existing
When as disappearing, the liquid in steering wheel 3 can be discharged by drainage duct 9.And guarantee that the conduit for being introduced into 6 part of water tank is higher than
Liquid surface in water tank is not filled with before liquid in steering wheel 3, while guaranteeing that water tank 6 is connected to outside air, to guarantee
Its internal air can timely be discharged when injecting liquid into steering wheel 3.Likewise, being arranged by the liquid in steering wheel 3
When out into water tank 6, since water tank 6 is connected to outside air, the air in water tank 6 can be discharged in time at this time.Figure
In give signaling path a, liquid injection path c in liquid discharge path b and steering wheel in steering wheel.
Control system includes ECU electronic control unit 11, first pressure sensor 2 and second pressure sensor 4, and described
One pressure sensor 2 is mounted on the brake caliper of the disk brake on wheel 1, the braking born for detecting brake
Pressure；The second pressure sensor 4 is installed at the lower link of brake pedal, for detecting pressure at brake pedal lower link；
The ECU electronic control unit 11 acquires the signal of first pressure sensor 2 and second pressure sensor 4, by with setting
Braking force fluctuation threshold value comparison judges whether that braking shake occurs；When braking shake occurs, ECU electronic control unit 11 passes through
Controlling the pumping system fills damping fluid inside the steering wheel 3.
As shown in figure 3, the method that vibration damping steering wheel of the present invention reduces shake, includes the following steps:
The signal of the acquisition of ECU electronic control unit 11 first pressure sensor 2 and second pressure sensor 4, first
The pressure value that pressure sensor 2 acquires is denoted as P1, second pressure sensor 4 acquire pressure value be denoted as P2；
The lowest threshold K that braking shake occurs is preset in the ECU electronic control unit 11；
Work as P2When > 0, the ECU electronic control unit 11 controls automatic valve 10 and opens, to inject liquid into steering wheel 3
Body is prepared；
After driver takes braking maneuver, ECU electronic control unit 11 receives being acquired for second pressure sensor 4
The Pressure Fluctuation Signal arrived, by making comparisons with the lowest threshold K for presetting braking shake generation in ECU electronic control unit 11,
Work as P2> 0 and P1When > K, ECU electronic control unit 11 judges that vehicle will occur to brake jitter conditions, the ECU electronics at this time
Control unit 11 controls field switch 8 and is closed, i.e. pumping system work, for filling damping fluid in steering wheel 3；Work as water
When water in case 6 reaches the height at the end of preset liquid injection, it is single that the signal is transmitted to ECU electronic control at this time
In member 11, ECU electronic control unit 11 controls field switch 8 and opens, and water pump 7 stops working, and injection control valve door 5 closes
It closes；
When the driver releases the brake pedal, 4 pressure value of second pressure sensor on brake pedal is the control of 0, ECU electronics
Vehicle terminates braking process at this time for the judgement of unit 11 processed, however within a period of time that brake pedal force has just disappeared, brake Reeb
Dynamic decaying needs certain time, therefore shakes in this graduated application it is also possible to exist, therefore also need to vehicle
Whether there is a situation where braking shakes to be judged.Work as P2=0 and P1When > K, the ECU electronic control unit 11 controls described
Pumping system stops working, and the ECU electronic control unit 11 control automatic valve 10 is closed, for making in steering wheel 3
Damping fluid hold mode；
Work as P2=0 and P1When < K, the ECU electronic control unit 11 judges that vehicle will not occur to brake jitter problem, institute
It states ECU electronic control unit 11 and controls automatic valve 10 and the opening of injection control valve door 5, for the vibration damping in discharge direction disk 3
Liquid.It, can be by the position on steering wheel knop of drainage duct in order to which effectively by steering wheel liquid is discharged in time
It sets and is arranged at steering wheel return timing knop lowermost position, it in this case can be more quickly by the liquid in brake disc
Discharge.
The lowest threshold K specifically: K=s × A × p0, in which: s is brake disc thin thickness difference DTV, takes 15 μm here；A
For the piston face product of checking cylinder；p0For the hydraulic of brake fluid.
The present invention realizes the principle for reducing steering wheel shake: when vehicle is braked, since there are thin for brake disc surface
Thickness difference DTV (Disc Thickness Variations), the overproof SRO of end face run-out (Surface run-out) and heat engine coupling
Closing effect causes brake disc to generate the reasons such as warpage, cause brake pressure change (BPV) change with braking moment
(BTV), it so as to cause the generation of braking shake, and is acted on by the amplification and transmitting of suspension system and vehicle body, to the row of vehicle
It sails comfort and brings many negative effects, wherein the influence of the vibration of steering wheel is particularly acute.By the present invention in that steering wheel
Inner hollow injects liquid such as water into steering wheel when vehicle is in braking dither state, since liquid has compressibility
And viscosity, vibrational energy can be absorbed and be consumed, thus achieve the purpose that decaying vibration.
Case verification process of the invention is as follows:
1: theoretical validation
Assuming that vibrational system when steering wheel 2 is shaken is reduced to the free vibration of single quality system, such as 4 institute of attached drawing
Show, is displaced q using the actual thickness difference of brake disc surface as excitation, steering wheel is reduced to a mass block m, while the braking
Steering wheel has rigidity k and damping C in system.In order to simulate the vibration characteristics of steering wheel designed by the present invention, by institute
Water filling is emptied among the steering wheel of design, therefore the rigidity of designed steering wheel should be reduced, and k is denoted as1, simultaneously because
Liquid has viscosity and compressibility, therefore damped coefficient of the designed steering wheel in water filling is increased,
It is denoted as C1, steering wheel designed by the present invention needs to guarantee the total quality m of steering wheel when filling water1It will be close to before improving
Solid steering wheel quality m.
The origin for taking steering wheel displacement coordinate x is that standing balance position obtains shown in Fig. 4 according to Newton's second law
The differential equation of system are as follows:
The solution of equation (2) is made of the sum of the solution of free vibration homogeneous equation and the particular solution of nonhomogeneous equation.
It enablesThe then corresponding homogeneous equation of equation 2 are as follows:
In formula (3), ω0For the inherent circular frequency of system, and n and ω0Ratio become damping ratio, be denoted as ξ.
Since the vibrational system of steering wheel belongs to small damping system, the solution of system differential equation (1) at this time are as follows:
By observation equation (1) solve the characteristics of it is found that the vibrational system amplitude withDecaying, by institute of the present invention
The steering wheel damped coefficient C of design1> C, and m1≈ m, thereforeIt is known that direction designed by the present invention
Disk and steering wheel Jitter Attenuation method can make vehicle that braking shake occur and be transmitted to the amplitude vibrated on steering wheel and obtain
To reduction.
2: simulating, verifying
The differential equation (1) of dynamics model of vibration system and the system shown in 4 is in Matlab/ with reference to the accompanying drawings
The kinetic model that vibrational system is constructed in Simulink, then with the relative dimensions of steering wheel corresponding in certain model vehicle
Basic parameter of the parameter as this model finds parameter involved in system, quality m, rigidity by consulting related data
K and damped coefficient C.And quality m of designed steering wheel in the case where water filling1It is easy to get, passes through point in step 1
Analysis is it is found that k1< k, C1> C, therefore can be on the basis of known k and C to k1And C1Value is carried out, verification step 1 is come with this
In theoretical validation correctness.By being emulated under Matlab/Simulink module, steering wheel is obtained and has improved front and back
Vibration time-domain diagram, as shown in Fig. 5.By the vibration amplitude maximum values of two change curves in comparison diagram 5 it is found thatSteering wheel and steering wheel Jitter Attenuation method i.e. designed by the present invention can the sides of making
Reduce 16.8% to the vibration amplitude of disk, this illustrates that steering wheel Jitter Attenuation method according to the present invention can satisfy reduction
The purpose of steering wheel shake.
The embodiment is a preferred embodiment of the present invention, but present invention is not limited to the embodiments described above, not
In the case where substantive content of the invention, any conspicuous improvement that those skilled in the art can make, replacement
Or modification all belongs to the scope of protection of the present invention.
Claims (8)
1. a kind of vibration damping steering wheel, which is characterized in that be hollow structure inside the steering wheel (3), the steering wheel (3) is internal
It is connect with pumping system, for filling damping fluid.
2. vibration damping steering wheel according to claim 1, which is characterized in that equal by reinforcing rib inside the steering wheel (3)
Divide several damping spaces interconnected, steering wheel (3) support rod is hollow structure, the hollow structure and any vibration damping
Space connection.
3. vibration damping steering wheel according to claim 2, which is characterized in that the stream of damping fluid in the adjacent damping space
Indention is moved, the damping fluid in a damping space is upper entering and lower leaving, the vibration damping in the adjacent damping space
Liquid is bottom in and top out.
4. vibration damping steering wheel according to claim 1, which is characterized in that the pumping system includes water tank (6), water pump
(7) and drainage duct (9)；The water tank (6), water pump (7) and steering wheel (3) internal formation closed loop；The drainage duct
(9) it connects inside at water tank (6) and steering wheel (3) handle, automatic valve (10) is installed on the drainage duct (9), the water
It pumps and injection control valve door (5) is installed between (7) and steering wheel (3).
5. vibration damping steering wheel according to claim 1-4, which is characterized in that it further include control system, the control
System processed includes ECU electronic control unit (11), first pressure sensor (2) and second pressure sensor (4), first pressure
Force snesor (2) is for detecting the brake pressure that brake is born；The second pressure sensor (4) is stepped on for detecting braking
Pressure at plate lower link；ECU electronic control unit (11) acquisition first pressure sensor (2) and second pressure sensor
(4) signal judges whether that braking shake occurs by the braking force fluctuation threshold value comparison with setting；It is shaken when braking occurs
When, ECU electronic control unit (11) makes damping fluid fill steering wheel (3) inside by controlling the pumping system.
6. a kind of method of the reduction shake of vibration damping steering wheel described in claim 5, which comprises the steps of:
The signal of ECU electronic control unit (11) acquisition first pressure sensor (2) and second pressure sensor (4), the
The pressure value of one pressure sensor (2) acquisition is denoted as P1, second pressure sensor (4) acquisition pressure value be denoted as P2；
The lowest threshold K that braking shake occurs is preset in the ECU electronic control unit (11)；
Work as P2When > 0, ECU electronic control unit (11) control automatic valve (10) is opened；
Work as P2> 0 and P1When > K, the ECU electronic control unit (11) controls the pumping system work, for steering wheel
(3) damping fluid is filled in；
Work as P2=0 and P1When > K, the ECU electronic control unit (11) controls the pumping system and stops working, and the ECU
Electronic control unit (11) controls automatic valve (10) and closes, for making the damping fluid hold mode in steering wheel (3)；
Work as P2=0 and P1When < K, ECU electronic control unit (11) control automatic valve (10) is opened, and is used for discharge direction
Damping fluid in disk (3).
7. the method that vibration damping steering wheel according to claim 6 reduces shake, which is characterized in that the lowest threshold K tool
Body are as follows: K=s × A × p0,
Wherein: s is brake disc thin thickness difference DTV；
A is the piston face product of checking cylinder；
p0For the hydraulic of brake fluid.
8. the method that vibration damping steering wheel according to claim 7 reduces shake, which is characterized in that the brake disc thin thickness difference
DTV takes 15 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811196547.8A CN109501850B (en) | 2018-10-15 | 2018-10-15 | Vibration reduction steering wheel and method for reducing vibration thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811196547.8A CN109501850B (en) | 2018-10-15 | 2018-10-15 | Vibration reduction steering wheel and method for reducing vibration thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109501850A true CN109501850A (en) | 2019-03-22 |
| CN109501850B CN109501850B (en) | 2021-02-12 |
Family
ID=65746579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811196547.8A Active CN109501850B (en) | 2018-10-15 | 2018-10-15 | Vibration reduction steering wheel and method for reducing vibration thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109501850B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03279074A (en) * | 1990-03-28 | 1991-12-10 | Toyoda Gosei Co Ltd | Switch built-in type steering wheel |
| JP2001080436A (en) * | 1999-09-13 | 2001-03-27 | Toyota Motor Corp | Vehicular warning device |
| JP2003026003A (en) * | 2001-07-10 | 2003-01-29 | Nippon Plast Co Ltd | Steering wheel |
| US20060108014A1 (en) * | 2004-11-23 | 2006-05-25 | Marsh Andrew D | Automotive power steering systems |
| CN104340258A (en) * | 2013-07-25 | 2015-02-11 | 现代自动车株式会社 | Steering wheel apparatus for adjusting stiffness and receiving pressure and method of controlling the same |
-
2018
- 2018-10-15 CN CN201811196547.8A patent/CN109501850B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03279074A (en) * | 1990-03-28 | 1991-12-10 | Toyoda Gosei Co Ltd | Switch built-in type steering wheel |
| JP2001080436A (en) * | 1999-09-13 | 2001-03-27 | Toyota Motor Corp | Vehicular warning device |
| JP2003026003A (en) * | 2001-07-10 | 2003-01-29 | Nippon Plast Co Ltd | Steering wheel |
| US20060108014A1 (en) * | 2004-11-23 | 2006-05-25 | Marsh Andrew D | Automotive power steering systems |
| CN104340258A (en) * | 2013-07-25 | 2015-02-11 | 现代自动车株式会社 | Steering wheel apparatus for adjusting stiffness and receiving pressure and method of controlling the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109501850B (en) | 2021-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4602279B2 (en) | Brake control device for motorcycle | |
| CN102300729B (en) | Method For Chassis Control Of Motor Vehicle, And Device For Carrying Out Said Method | |
| CN104010898B (en) | Pressure pulsation damper for motor vehicle braking system | |
| EP1781484B1 (en) | Methods and apparatus for reducing vehicle tire wear | |
| JP6485418B2 (en) | Brake control device | |
| CN101865237A (en) | Hydraulic electricity generation shock absorber of vehicle | |
| CN208010826U (en) | Damper and the suspension system using the damper, vehicle | |
| CN101269618A (en) | Control method for damping value of electronic control air spring damping apparatus with three-gear | |
| CN108839529B (en) | A kind of active variable volume air suspension and its control method | |
| EP3650250A1 (en) | Control device for suspension device and suspension system | |
| CN208221450U (en) | A kind of hydraulic shock-absorption piston and hydraulic damper with throttle valve plate | |
| CN109501850A (en) | A kind of vibration damping steering wheel and its method for reducing shake | |
| CN105443639B (en) | A kind of automobile active shock based on electro-hydraulic servo | |
| CN108608821B (en) | Vehicle suspension system comprising negative stiffness device and control method thereof | |
| JP2017096156A (en) | Brake negative pressure control device for vehicle | |
| Mo et al. | Performance prediction and flow characteristics of a hydraulic pump for ABS and ESC systems using FSI simulation | |
| EP3957527B1 (en) | Control system for controlling behaviour of a straddle-type vehicle and control method | |
| CN106218335B (en) | A kind of stiffness variable trailing link and the air suspension and its method for installing the trailing link | |
| KR102179663B1 (en) | Apparatus and method for adjusting height of vehicle | |
| CN111845241A (en) | Self-adaptive adjusting system and control method for ground clearance of automobile | |
| CN112431742A (en) | Noise reduction device for air compressor of electric motor coach | |
| CN206633989U (en) | Automobile brake pedal | |
| CN105692459B (en) | Vibration-proof structure and crane | |
| CN103486187A (en) | Automatic variable damping rear shock absorber of motorcycle capable of vibrating along with ups and downs of road surface | |
| Masliiev et al. | Study of an air spring with improved damping of vibrations |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |