CN106768543A - The test device and its method of a kind of tire drag - Google Patents
The test device and its method of a kind of tire drag Download PDFInfo
- Publication number
- CN106768543A CN106768543A CN201611010744.7A CN201611010744A CN106768543A CN 106768543 A CN106768543 A CN 106768543A CN 201611010744 A CN201611010744 A CN 201611010744A CN 106768543 A CN106768543 A CN 106768543A
- Authority
- CN
- China
- Prior art keywords
- tire
- test
- experiment
- rotary drum
- drag
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
Landscapes
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Automation & Control Theory (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Tires In General (AREA)
Abstract
A kind of test device of tire drag, it includes：Experiment tire and test surfaces, also include：Tire loading mechanism, it has：The axle journal being connected with experiment tyre rotation, there is dynamometer thereon；The vertical test surfaces direction of load loading section moves up and down；Detection and control device are automatically controlled to the speed of the tire loading mechanism, load and stabilization；And the test surfaces are the drum surface of rotary drum, while providing a kind of method using the test device, rolling friction, raising test efficiency, rapid Optimum tire design that it can accurately detect tire.
Description
Technical field
Test device and its method on a kind of tire drag of the invention.
Background technology
Tire and wheel make motor racing in vehicle bridge (axle) power transmission and ground between.Therefore, tire and wheel arrangement should
Meet following basic demands：Enough load-bearing capacities and speed ability are good with less rolling resistance and running noise
Attachment characteristic and mass balance, wear-resistant, resistance to puncture, ageing-resistant and good air-tightness, quality is small, price is low, convenient disassembly,
Interchangeability is good.
The rolling resistance of tire directly affects exercise performance and the oil consumption of tire, and the world today reduces all in energy-saving and emission-reduction
The rolling resistance of tire seems more and more important.
Wherein rolling resistance influence of the tyre tread on tire is very big, and highway tread pattern tire drag is small, noise is small, fits
For being used on paved road, wherein annular ribs tire is applied to good road surface, and rolling resistance is small, and transverse pattern tire is suitable
For soil-stone soil-stone, rolling resistance is big；Cross-country tread pattern tire is applied to bad road surface or is used without road area, and rolling resistance is bigger；
Dual purpose tread pattern tire is suitable for use with the Protean occasion of pavement conditions.
Even if same design decorative pattern, the difference such as the width of decorative pattern, length and depth, rolling resistance also differs greatly, must
Must be analyzed by experimental test, therefore the test device and method of testing of rolling resistance seem more and more important.
Now in order to analyze influence of the tire drag to vehicle, one group of multiple identical tire is first mounted in real vehicle
On, then on one section of smooth road, vehicle is accelerated into certain speed, close engine, the coasting distance of measuring vehicle,
Equally, another group of coasting distance of tire is measured, the size of the rolling resistance of tire is then judged according to coasting distance.
The shortcoming of prior art is：Coasting distance is not only and the vehicle interior depending on tire drag
Mechanical friction influence is also very big, and institute can only in this way do simple contrast；The real rolling resistance of tire can not be tested out；No
The rolling resistance in the case of tire different load can be tested out.
Therefore need to provide the test device and its method of a kind of tire drag, to overcome existing technical characterstic.
The content of the invention
The present invention provides a kind of test device of tire drag, and it includes：Experiment tire and with the experiment tire
Outer surface contact test surfaces, it also includes：Tire loading mechanism, the tire loading mechanism has：Axle journal, the experiment
Tire is rotated with the axle journal and is connected, and dynamometer is additionally provided with the axle journal；Load loading section, the load loading section
Moved up and down in the vertical test surfaces direction；With detection and control device, the detection and control device inside are with default
Program, the detection and control device are connected with the tire loading mechanism, and speed to the tire loading mechanism, negative
Lotus and stabilization are automatically controlled；And the test surfaces are the drum surface of rotary drum.
The present invention provides a kind of method of testing of tire drag simultaneously, and it uses a kind of described tire drag
Test device, and it includes：
1) sets the detection and control device, to automatically control test speed and the experiment of the tire loading mechanism
Load (Lm)；
2) tire loading mechanism described in increases to the experiment and bears in the drum surface vertical direction to the experiment tire
Lotus (Lm), the rotating speed of the rotary drum brings up to the test speed, and carries out break-in；
3) keeps the test speed and the test load (Lm) constant, the dynamometer is measured at the axle journal
First round axle power (Ft), and record the shaft centre line of the experiment tire to the first distance (r of the drum surfaceL)；
4) keeps the test speed constant, is reduced to enable the experiment tire by the experiment speed by test load
Without sliding, the dynamometer measures the second wheel axle power (F at the axle journal to degree travelingtp), and record the experiment tire
Second distance (r of the shaft centre line to the drum surfaceLp)；
5) is according to the described second wheel axle power (Ftp), the second distance (rLp) and the radius (R) of the rotary drum calculate
Supplementary loss (Fpl), and formula is：
6) is according to the first round axle power (Ft), it is described first distance (rL), the radius (R) of the rotary drum and described additional
Loss (Fpl) calculate rolling resistance (Fr), and formula is：
7) is according to the rolling resistance (Fr) and the test load (Lm) calculate coefficient of rolling resistance (Cr), and formula
For：
The apparatus and method can accurately detect the rolling friction of tire, improve test efficiency, rapid Optimum tire design.
Brief description of the drawings
Fig. 1 is apparatus of the present invention structural representation.
Reference：1 rotary drum；2 motors；3 dynamometers；4 experiment tires；5 tire loading mechanisms；6 detections and control device；
FtWheel axle power；FrRolling resistance.
Specific embodiment
As shown in figure 1, the present invention provides a kind of test device of tire drag, it includes：Experiment tire 4 and with institute
The test surfaces of the outer surface contact of experiment tire 4 are stated, it also includes：Tire loading mechanism 5, the tire loading mechanism 5 has：
Axle journal, the experiment tire 4 is rotated with the axle journal and is connected, and dynamometer 3 is additionally provided with the axle journal；Load loading section,
The load loading section is moved up and down in the vertical test surfaces direction；With detection and control device 6, the detection and control
The inside of device 6 has pre-set programs, and the detection and control device 6 are connected with the tire loading mechanism 5, and to the wheel
Tire loading fills 5 speed put, load and stabilization and is automatically controlled；And the test surfaces are the drum surface of rotary drum 1.
The device can accurately detect the rolling friction of tire, improve test efficiency, rapid Optimum tire design.
As a further improvement, the rotary drum 1 and the drive connection of motor 2, and the rotating speed of the rotary drum 1 and the experiment
The rotating speed of tire 4 is opposite.
As a further improvement, the axial direction and footpath on a diameter of 2 meters of faces of cylinder of the drum surface of the rotary drum 1, and the face of cylinder
It is not more than 0.5mm to total run-out, the rotary drum width is 800mm.
As a further improvement, the drum surface of the rotary drum 1 is that smooth steel plate is formed.
As a further improvement, also there is wheel rim between the experiment tire 4 and the axle journal.
As a further improvement, the axially and radially total run-out of the wheel rim is not more than 0.5mm, the plane of the wheel rim
The vertical drum surface, and error is no more than 2mrad.
As shown in figure 1, the feature of each critical piece is as follows：
The drum surface of the rotary drum 1 is a diameter of 2 meters of faces of cylinder that smooth steel plate is formed, the face of cylinder it is axially and radially complete
Bounce is not more than 0.5mm, and rotary drum width is 800mm.
The motor 2 makes rotary drum 1 be rotated according to certain test speed.
The dynamometer 3 is arranged on the axle journal of tire loading mechanism 5, for load and the detection of rolling friction.
The experiment tire 4 is flawless, the qualified tire without deformation, loads onto wheel rim, and inflation reaches tire standards air pressure,
Then it is bolted on the axle journal of tire loading mechanism 5.
Tire loading mechanism 5 be used for tire is installed, by rotatable axle journal with can the surface of vertical rotary drum 2 direction move
Dynamic loading device composition, loading device is moved up and down by oil pressure cntrol, and according to GB/T 290404 the 6th article loaded.
Described detection and control device 6 are carried out according to pre-set programs to the speed of tire loading mechanism 5, load and stabilization
Automatically control, after break-in, measure parameter value required when calculating rolling resistance.
The present invention provides a kind of method of testing of tire drag simultaneously, and it uses a kind of described tire drag
Test device, and it includes：
1) sets the detection and control device 6, to automatically control test speed and the examination of the tire loading mechanism 5
Test load (Lm)；
2) tire loading mechanism 5 described in increases to the experiment in the drum surface vertical direction to the experiment tire 4
Load (Lm), the rotating speed of the rotary drum brings up to the test speed, and carries out break-in；
3) keeps the test speed and the test load (Lm) constant, the dynamometer 3 is measured at the axle journal
First round axle power Ft, and record the shaft centre line of the experiment tire 4 to the first distance (r of the drum surfaceL)；
4) keeps the test speed constant, is reduced to enable the experiment tire 4 by the experiment speed by test load
Without sliding, the dynamometer measures the second wheel axle power (F at the axle journal to degree travelingtp), and record the experiment tire 4
Second distance (r of the shaft centre line to the drum surfaceLp)；
5) is according to the described second wheel axle power (Ftp), the second distance (rLp) and the radius (R) of the rotary drum calculate
Supplementary loss (Fpl), and formula is：
6) is according to the first round axle power Ft, the first distance (rL), the radius (R) of the rotary drum and described additional
Loss (Fpl) calculate rolling resistance Fr, and formula is：
7) is according to the rolling resistance Fr and test load (Lm) calculate coefficient of rolling resistance (Cr), and formula
For：
The method can accurately detect the rolling friction of tire, improve test efficiency, rapid Optimum tire design.
As a further improvement, also there is step before the setting detection and control device 6：By the survey
Examination tire 4 is attached on wheel rim；The test tire 4 is inflated；It is put into and experiment with the experiment tire 4 after by inflation
Stood in the thermostatic chamber of place same stable.
As a further improvement, the inner gas pressure is closed, and when the test tire is passenger vehicle tyre,
More than 3 hours are stood, when the test tire is lorry or passenger tyre, more than 6 hours is stood.
As a further improvement, after the standing, also include：The test tire fixture is fixed to described
On axle journal；Air pressure is adjusted to test air pressure；With ten minutes after confirm again.
Preferred rolling resistance method of testing in the present invention includes：
The preparation of step one, experiment tire
Test tire 4 is attached on wheel rim, and for passenger vehicle tyre, wheel rim will meet wheel rim is measured specified in GB/T298
Requirement；For commercial car tire, wheel rim will meet the requirement that wheel rim is measured specified in GB/T29, and wheel rim is axially and radially
Total run-out is not more than 0.5mm, and the vertical drum surface of plane of wheel rim, error is no more than 2mrad.
Test tire 4 is inflated according to the 6.4th article of requirement of table 2 of GB/T 290404, the blowing pressure is closed
, and meet the precision C.4 specified in the standard.
Experiment tire 4 after inflation is put into the thermostatic chamber with test site same stable, passenger vehicle tyre is put 3 hours
More than, lorry and passenger tyre are put more than 6 hours.
The setting of step 2, experimental condition
Before on-test, according to the 6th article of regulation of GB/T 290404, detection is set and control device 6 automatically controls necessity
The parameter such as speed, load.
The installation of step 3, experiment tire
The test fixture of tire 4 after constant temperature after inflation is placed is fixed on the axle journal of tire loading mechanism 5, by air pressure
It is adjusted to test air pressure, confirms again after 10 minutes.
Step 4, implementation experiment
With tire loading mechanism 5, test load is increased to experiment tire 4 in the vertical direction of rotary drum 1, motor 2 makes rotary drum 1
Rotating speed bring up to test speed, break-in is carried out in required time；
After break-in, keep speed and load constant, measure first round axle power Ft, and record the shaft centre line of experiment tire 4
To the first distance (r of the drum surface of rotary drum 1L) and test load (Lm)；
Keep speed constant, according to the .6.2 articles partition method of GB/T 290404, the load for testing tire 4 is reduced to make
Tire can measure the second wheel axle power (F by test speed traveling without slidingtp), and record experiment tire 4 shaft centre line to turn
Second distance (the r of the drum surface of drum 1Lp)。
The summary of step 5, result of the test
Obtain average value：Calculate respectively and measure the second wheel axle power (F within a period of timetp), second distance (rLp), first
Wheel axle power Ft, first distance (rL) and test load (Lm) average value；
According to the described second wheel axle power (Ftp), the second distance (rLp) and the rotary drum radius (R) calculate it is additional
Loss (Fpl), and formula is：
Wherein, Ftp：Second wheel axle power
rLp：Second distance
R：The radius of rotary drum 1
According to the first round axle power Ft, it is described first distance (rL), the radius (R) and the supplementary loss of the rotary drum
(Fpl) calculate rolling resistance Fr, and formula is：
Wherein, Ft：First round axle power；
rL：First distance；
R：The radius of rotary drum 1；
Fpl：Supplementary loss.
According to the rolling resistance FrWith the test load (Lm) calculate coefficient of rolling resistance (Cr), and formula is：
Wherein, Fr：Wheel axle power；Lm：Test load.
The apparatus and method can accurately detect the rolling friction of tire, improve test efficiency, rapid Optimum tire design.
Should be appreciated that invention which is intended to be protected is not limited to non-limiting embodiments, it should be understood that non-limiting embodiment party
Case is illustrated as just example.The desired substantive protection domain of the application is more embodied in independent claims offer
Scope, and its dependent claims.
Claims (10)
1. a kind of test device of tire drag, it includes：Test tire and contacted with the outer surface of the experiment tire
Test surfaces, it is characterised in that：
It also includes：
Tire loading mechanism, the tire loading mechanism has：Axle journal, the experiment tire is rotated with the axle journal and is connected, institute
State and dynamometer is additionally provided with axle journal；Load loading section, the load loading section is upper and lower in the vertical test surfaces direction
It is mobile；With
Detection and control device, the detection and control device inside have pre-set programs, the detection and control device and institute
Tire loading mechanism is stated to be connected, and speed to the tire loading mechanism, load and stabilization are automatically controlled；And
The test surfaces are the drum surface of rotary drum.
2. a kind of test device of tire drag as claimed in claim 1, it is characterised in that：The rotary drum drives with motor
Dynamic connection, and the rotating speed of the rotary drum is opposite with the rotating speed of the experiment tire.
3. a kind of test device of tire drag as claimed in claim 2, it is characterised in that：The drum surface of the rotary drum
A diameter of 2 meters of faces of cylinder, and the axially and radially total run-out on the face of cylinder is not more than 0.5mm, the rotary drum width is 800mm.
4. a kind of test device of tire drag as claimed in claim 3, it is characterised in that：The drum surface of the rotary drum is
Smooth steel plate is formed.
5. a kind of test device of tire drag as claimed in claim 2, it is characterised in that：Experiment tire and the institute
Stating also has wheel rim between axle journal.
6. a kind of test device of tire drag as claimed in claim 5, it is characterised in that：The axial direction of the wheel rim and
Radial direction total run-out is not more than 0.5mm, the vertical drum surface of plane of the wheel rim, and error is no more than 2mrad.
7. a kind of method of testing of tire drag, it uses a kind of survey of tire drag as claimed in claim 1
Trial assembly is put, and it includes：
1) sets the detection and control device, to automatically control the test speed and test load of the tire loading mechanism
(Lm)；
2) tire loading mechanism described in increases to the test load in the drum surface vertical direction to the experiment tire
(Lm), the rotating speed of the rotary drum brings up to the test speed, and carries out break-in；
3) keeps the test speed and the test load (Lm) constant, the dynamometer measures the first round at the axle journal
Axle power (Ft), and record the shaft centre line of the experiment tire to the first distance (r of the drum surfaceL)；
4) keeps the test speed constant, is reduced to enable the experiment tire by the test speed row by test load
Sail without sliding, the dynamometer measures the second wheel axle power (F at the axle journaltp), and record it is described experiment tire axle in
Second distance (r of the heart line to the drum surfaceLp)；
5) is according to the described second wheel axle power (Ftp), the second distance (rLp) and the radius (R) of the rotary drum calculate additional damage
Lose (Fpl), and formula is：
6) is according to the first round axle power (Ft), it is described first distance (rL), the radius (R) and the supplementary loss of the rotary drum
(Fpl) calculate rolling resistance (Fr), and formula is：
7) is according to the rolling resistance (Fr) and the test load (Lm) calculate coefficient of rolling resistance (Cr), and formula is：
8. a kind of method of testing of tire drag as claimed in claim 7, it is characterised in that：Described, the inspection is set
Survey and also there is step before control device：
The test tire is attached on wheel rim；
The test tire is inflated；With
The experiment tire after by inflation is put into the thermostatic chamber with test site same stable and stands.
9. a kind of method of testing of tire drag as claimed in claim 8, it is characterised in that：The inner gas pressure is envelope
Enclosed, and
When the test tire is passenger vehicle tyre, more than 3 hours are stood,
When the test tire is lorry or passenger tyre, more than 6 hours are stood.
10. a kind of method of testing of tire drag as claimed in claim 9, it is characterised in that：After the standing,
Also include：
The test tire fixture is fixed on the axle journal；
Air pressure is adjusted to test air pressure；With
Confirm again after ten minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611010744.7A CN106768543A (en) | 2016-11-17 | 2016-11-17 | The test device and its method of a kind of tire drag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611010744.7A CN106768543A (en) | 2016-11-17 | 2016-11-17 | The test device and its method of a kind of tire drag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106768543A true CN106768543A (en) | 2017-05-31 |
Family
ID=58969420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611010744.7A Pending CN106768543A (en) | 2016-11-17 | 2016-11-17 | The test device and its method of a kind of tire drag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106768543A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238748A (en) * | 2018-08-28 | 2019-01-18 | 安徽佳通乘用子午线轮胎有限公司 | A kind of indoor evaluation method of all-steel radial tyre shoulder sky failure |
| CN110146306A (en) * | 2019-06-18 | 2019-08-20 | 上海钧正网络科技有限公司 | A kind of rolling resistance test device and rolling resistance test method |
| CN110160810A (en) * | 2019-06-14 | 2019-08-23 | 青岛科技大学 | Tire rolling resistance test method under indoor various working |
| CN110987484A (en) * | 2019-12-26 | 2020-04-10 | 安徽佳通乘用子午线轮胎有限公司 | Indoor evaluation method for endurance performance of belt ply of tire |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3041849A1 (en) * | 1980-11-06 | 1982-06-09 | Gebr. Hofmann Gmbh & Co Kg Maschinenfabrik, 6100 Darmstadt | Measuring tyre rolling resistance with radial force suppression - by differencing results obtd. in opposite directions using computer |
| GB2104010A (en) * | 1981-08-20 | 1983-03-02 | Froude Eng Ltd | >Tyre testing apparatus |
| CN103153726A (en) * | 2010-09-30 | 2013-06-12 | 倍耐力轮胎股份公司 | Method and system for determining the potential friction between a tyre for vehicles and a rolling surface |
| CN103471862A (en) * | 2013-09-20 | 2013-12-25 | 华东交通大学 | Single-roller tire rolling resistance measuring method in finished-automobile mode |
| CN204064689U (en) * | 2014-09-16 | 2014-12-31 | 华东交通大学 | Single cylinder measures the device of tire drag under whole vehicle state |
| CN105899930A (en) * | 2014-01-24 | 2016-08-24 | 住友橡胶工业株式会社 | Tire rolling-resistance testing method and testing device |
-
2016
- 2016-11-17 CN CN201611010744.7A patent/CN106768543A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3041849A1 (en) * | 1980-11-06 | 1982-06-09 | Gebr. Hofmann Gmbh & Co Kg Maschinenfabrik, 6100 Darmstadt | Measuring tyre rolling resistance with radial force suppression - by differencing results obtd. in opposite directions using computer |
| GB2104010A (en) * | 1981-08-20 | 1983-03-02 | Froude Eng Ltd | >Tyre testing apparatus |
| CN103153726A (en) * | 2010-09-30 | 2013-06-12 | 倍耐力轮胎股份公司 | Method and system for determining the potential friction between a tyre for vehicles and a rolling surface |
| CN103471862A (en) * | 2013-09-20 | 2013-12-25 | 华东交通大学 | Single-roller tire rolling resistance measuring method in finished-automobile mode |
| CN105899930A (en) * | 2014-01-24 | 2016-08-24 | 住友橡胶工业株式会社 | Tire rolling-resistance testing method and testing device |
| CN204064689U (en) * | 2014-09-16 | 2014-12-31 | 华东交通大学 | Single cylinder measures the device of tire drag under whole vehicle state |
Non-Patent Citations (2)
| Title |
|---|
| 李红伟等: "浅析ISO28580:2009轮胎滚动阻力测试方法", 《轮胎工业》 * |
| 董秀玲摘译: "轿车、轻型载重车、载重车及大客车轮胎阻力测力方法", 《轮胎工业》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109238748A (en) * | 2018-08-28 | 2019-01-18 | 安徽佳通乘用子午线轮胎有限公司 | A kind of indoor evaluation method of all-steel radial tyre shoulder sky failure |
| CN110160810A (en) * | 2019-06-14 | 2019-08-23 | 青岛科技大学 | Tire rolling resistance test method under indoor various working |
| CN110146306A (en) * | 2019-06-18 | 2019-08-20 | 上海钧正网络科技有限公司 | A kind of rolling resistance test device and rolling resistance test method |
| CN110146306B (en) * | 2019-06-18 | 2024-02-27 | 上海钧正网络科技有限公司 | Rolling resistance testing device and rolling resistance testing method |
| CN110987484A (en) * | 2019-12-26 | 2020-04-10 | 安徽佳通乘用子午线轮胎有限公司 | Indoor evaluation method for endurance performance of belt ply of tire |
| CN110987484B (en) * | 2019-12-26 | 2021-08-06 | 安徽佳通乘用子午线轮胎有限公司 | Indoor testing method for endurance performance of belt ply of tire |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106768543A (en) | The test device and its method of a kind of tire drag | |
| CN104111176B (en) | Mobile shop service equipment with the device for determining tire drag coefficient | |
| CN109612929B (en) | Test device and method for researching friction characteristics between tire and actual road surface | |
| CN104729863A (en) | Multifunctional road detection device and test method for tires | |
| CN201993232U (en) | Bus hub bearing loading simulation testing device | |
| CN108007701B (en) | Device for testing abrasion resistance of tire and impact resistance of hub | |
| CN209485945U (en) | A kind of experimental rig of study of tire and practical pavement friction characteristic | |
| JP2015232545A (en) | Rolling resistance prediction method of tire and rolling resistance prediction apparatus of the same | |
| EP1615012A2 (en) | Method of testing tires for durability | |
| CN108613920B (en) | Simulation test device and method for researching friction process between tire and road surface | |
| CN108489740B (en) | Single-wheel wind tunnel test platform for vehicle and control method thereof | |
| CN106769837A (en) | Bitumen Pavement Anti-Skid Performance test platform and the method that pavement skid resistance condition is evaluated using the platform under a kind of icy conditions | |
| CN108132155A (en) | A kind of 4 wheel driven Chassis dynamometer detecting system for being applicable in different wheelbases | |
| CN104344957A (en) | Dynamic load simulation test method of airplane wheel bearing | |
| CN110160810B (en) | Method for testing rolling resistance of tire under indoor multiple working conditions | |
| CN207540795U (en) | A kind of 4 wheel driven Chassis dynamometer detection device for being applicable in different wheelbases | |
| CN211347794U (en) | Tram walking surface coating performance test equipment | |
| CN112763210A (en) | Double-station hub bearing unit working condition simulation testing machine | |
| CN105258958A (en) | Tyre test force bearing platform | |
| CN205120383U (en) | Tire test atress platform | |
| CN115144203A (en) | Testing device and testing method for hub motor | |
| CN206321432U (en) | A kind of experimental rig for being used to measure tire and road surface Interaction Force | |
| CN104344958A (en) | Simulation test method for working condition of airplane wheel bearing in launching/launching stopping process | |
| DE102017223208A1 (en) | Wheel and tire test bench and method for carrying out a wheel and tire test | |
| Ivković et al. | DYNAMIC FRICTION IN THE BRAKING, TIRE–ROAD CONTACT-Ivan |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |