CN104697792A - Fatigue endurance test measuring method for automobile automatic gearbox P-gear parking mechanism - Google Patents
Fatigue endurance test measuring method for automobile automatic gearbox P-gear parking mechanism Download PDFInfo
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- CN104697792A CN104697792A CN201510158055.XA CN201510158055A CN104697792A CN 104697792 A CN104697792 A CN 104697792A CN 201510158055 A CN201510158055 A CN 201510158055A CN 104697792 A CN104697792 A CN 104697792A
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Abstract
The invention discloses a fatigue endurance test measuring method for an automobile automatic gearbox P-gear parking mechanism. According to the method, a computer starts a driving motor through a motor controller so as to control the parking mechanism to park at the P gear; the computer collects torque signals output by a torque sensor through a data collector in real time, and whether P-gear parking is successful or not is judged according to collected torque of an axle shaft of the automatic gearbox to be measured; the computer automatically accumulates the number of recording tests until a stipulated number of tests are completed or the P-gear parking mechanism is ineffective, and the computer automatically ends testing. Test measuring is performed on the fatigue life of the P-gear parking mechanism through simulating test working conditions, on an ascending road and a descending road, of the automatic gearbox, so that the reliability and accuracy of the fatigue endurance tests performed on the automobile gearbox P-gear parking mechanism are improved.
Description
Technical field
The present invention relates to car test techniqes field, particularly relate to automatic transmission P in automobile dynamic system and keep off parking performance test measuring method, specifically, relate to a kind of automatic gearbox P and keep off halting mechanism fatigue endurance test measuring method.
Background technology
Along with the development of vehicle transmission technology, automatic transmission, due to features such as its processing ease, driving comfort, smooth gear shifting, has become an important development direction of automotive transmission.P keeps off the important component part of halting mechanism as automatic transmission, P keeps off parking and is made up of spreadet spreadet wheel, lock pin ratchet and a set of control device, spreadet spreadet wheel and transmission output shaft are rigidly connected under normal circumstances, and lock pin ratchet and control device are fixed on case of transmission.When automatic transmission is not linked into P gear, control device controls lock pin ratchet and spreadet spreadet wheel is in released state, and spreadet spreadet wheel can rotate arbitrarily with transmission output shaft; When automatic transmission is linked into P gear, control device makes lock pin ratchet be combined with spreadet spreadet wheel, thus make together with transmission output shaft is locked at case of transmission rigidity, realizes long-time stable with the automobile guaranteeing to carry automatic transmission and park, avoid slipping car phenomenon.But keeping off halting mechanism in order to ensure P can reliably working in automatic transmission Life cycle, often need that halting mechanism is kept off to automatic transmission P newly developed and carry out fatigue durability testing, to verify its fatigue reliability.
Therefore, how carrying out fatigue durability engine bench test according to keeping off halting mechanism to its P under automatic transmission real vehicle installment state, also there is no the report of correlation test measuring method at present both at home and abroad.Therefore, need a kind of automatic gearbox P of design badly and keep off halting mechanism fatigue endurance test measuring method, under can simulating automatic transmission real vehicle installment state completely, P keeps off the test of halting mechanism fatigue durability, and this is significant for the shortening automatic transmission construction cycle.
Summary of the invention
For prior art above shortcomings, a kind of automatic gearbox P is the object of the present invention is to provide to keep off halting mechanism fatigue endurance test measuring method, under the operating condition of test such as up gradient, gug, halting mechanism can be kept off to its P in simulation automatic transmission and carry out test measurement fatigue lifetime, thus improve reliability and accuracy that automatic transmission P keeps off the fatigue endurance test of halting mechanism.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is such: a kind of automatic gearbox P keeps off halting mechanism fatigue endurance test measuring method, it is characterized in that:
1) automatic transmission to be measured being installed locator meams according to real vehicle is fixed on test measurement mechanism;
2) according to the spatial relation of the relative automatic transmission of selector on real vehicle, selector is mounted on test measurement mechanism, and gear-shifting inhaul cable is kept off halting mechanism with selector with the P of automatic transmission to be measured according to real vehicle connected mode is connected;
3) input shaft of automatic transmission to be measured is connected with drive motor, torque sensor connects automatic transmission semiaxis to be measured and loader side output shaft, utilize torque sensor directly to measure torque on automatic transmission semiaxis to be measured, and loader opposite side output shaft is connected with the brake disc axle of detent;
4) computing machine starts drive motor by electric machine controller, drag automatic transmission P to be measured by drive motor and keep off the rotation of halting mechanism spreadet spreadet wheel, simultaneously, computing machine starts timing automatically, after reaching setting-up time when Computer, computing machine controls electric machine controller and stops drive motor work, and the work tooth realizing spreadet spreadet wheel in process of the test selects randomness;
5) computing machine controls gear shifting manipulator and utilizes gear shifting manipulator manipulation selector, and the halting mechanism income P that selector controls automatic transmission to be measured by gear-shifting inhaul cable keeps off; Then computing machine applies torsional load by the semiaxis that loading control start-up loading device be automatic transmission to be measured gradually, to simulate under car load P gear parking operating mode moment of torsion on automatic transmission semiaxis to be measured; Meanwhile, the dtc signal that computing machine is exported by data acquisition unit Real-time Collection torque sensor, and carry out multilevel iudge, record and display, according to automatic transmission to be measured half shaft torque collected, computing machine judges that P keeps off income success or not;
6) if computer acquisition to torque sensor torque value much smaller than setting load, then represent P keep off income failure, computing machine automatically terminate test; If computer acquisition reaches setting load to the torque value of torque sensor, then computing machine starts timing automatically, until the torsional load load time of automatic transmission semiaxis to be measured reaches setting-up time, computing machine is by brake monitor control brake clamping brake disc;
7) computing machine controls gear shifting manipulator, handles selector and stays out P gear by gear-shifting inhaul cable, and when P gear is stayed out successfully, computing machine stops loading by loading control controlled loading device; Then computing machine is again by brake monitor control brake release brake disc;
8) computing machine repeats above-mentioned 4 automatically) ~ 7) process of the test, and automatic bulk registration test number (TN), until complete regulation test number (TN) or the inefficacy of P gear halting mechanism, computing machine terminates test automatically.
Compared with prior art, tool of the present invention has the following advantages:
1. the present invention tests measuring method realization simply, and principle of work is reliable, can realize process of the test Computer whole-process automatic control.
2. the present invention test measuring method utilize drive motor to realize work tooth that P keeps off parking lock gear selects randomness, make P keep off each tooth working strength of parking lock gear more close to real vehicle operating mode, ensure that P keeps off accuracy and the reliability of halting mechanism fatigue endurance test result.
3. the present invention tests measuring method and utilizes loader to simulate half load on axle when real vehicle P keeps off parking, simulation precision is high, highly versatile, and the torsional load that only need adjust loader when keeping off the P gear fatigue endurance test of fatigue endurance test and different model automatic transmission for real vehicle P under the operating condition of test such as upward slope, descending can realize corresponding test.
4. the present invention tests measuring method and can record automatic transmission P continuously and keep off half shaft torque in parking fatigue endurance test process, thus provides more how available test figure for the reliability design of automatic transmission P gear halting mechanism.
Accompanying drawing explanation
Fig. 1 is that automatic transmission P keeps off halting mechanism fatigue endurance test control flow chart.
Fig. 2 is that automatic transmission P keeps off halting mechanism fatigue endurance test Survey control schematic diagram.
Fig. 3 is that automatic transmission P keeps off halting mechanism fatigue endurance test measurement mechanism sketch.
In accompanying drawing: 1-iron ground; 2-variator installing base frame; 3-automatic transmission to be measured; 4-semiaxis; 5-torque sensor; 6-sensor base; 7-loader; 8-loader base; 9-detent; 10-brake monitor; 11-loading control; 12-computing machine; 13-data acquisition unit; 14-electric machine controller; 15-selector base; 16-motor base; 17-drive motor; 18-selector; 19-gear-shifting inhaul cable; 20-gear shifting manipulator.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.To inventive concept of the present invention, technical scheme, there is more complete, deep and accurate understanding to help those skilled in the art.
Embodiment: see Fig. 3, it is keep off halting mechanism fatigue endurance test measurement mechanism based on a kind of automatic transmission P that automatic transmission P disclosed by the invention keeps off halting mechanism fatigue endurance test measuring method; Described test measurement mechanism comprises iron ground 1, variator installing base frame 2, automatic transmission to be measured 3, semiaxis 4, torque sensor 5, sensor base 6, loader 7, loader base 8, detent 9, brake monitor 10, loading control 11, computing machine 12, data acquisition unit 13, electric machine controller 14, selector base 15, motor base 16, drive motor 17, selector 18, gear-shifting inhaul cable 19 and gear shifting manipulator 20.Wherein, torque sensor 5, loader 7 and data acquisition unit 13 are selected according to automatic transmission 3 running parameter to be measured.
See Fig. 1, Fig. 2, a kind of automatic gearbox P keeps off halting mechanism fatigue endurance test measuring method, and its measuring process is as follows:
1) automatic transmission 3 to be measured being installed locator meams according to real vehicle is fixed on test measurement mechanism; According to the corresponding torque sensor 5 of automatic transmission optimization of working parameters, loader 7, loading control 11 and data acquisition unit 13.
2) according to the space position relation of selector on real vehicle 18, gear-shifting inhaul cable 19 automatic transmission 3 relatively to be measured, selector 18 is mounted on test measurement mechanism, and gear-shifting inhaul cable 19 is kept off halting mechanism with selector 18 with the P of automatic transmission 3 to be measured according to real vehicle connected mode be connected, adjustment position is fixing after reaching testing requirements.
3) between loader 7 output shaft and semiaxis 4, torque sensor 5 is installed, for directly measuring the torque of automatic transmission 3 semiaxis to be measured; The brake disc axle of loader 7 other end output shaft connecting brake 9 simultaneously, semiaxis 4 other end is rigidly connected by half axis hole of spline tooth and automatic transmission to be measured 3, thus the torsional load realizing loader 7 applying is directly passed to the halting mechanism of automatic transmission 3 to be measured by semiaxis 4.
4) dtc signal of data acquisition unit 13 to automatic transmission 3 semiaxis to be measured in whole process of the test is utilized to carry out continuous Real-time Collection, and import computing machine 12 in real time into and preserve in real time, process and show, thus guarantee that computing machine 12 can obtain torque on automatic transmission 3 semiaxis to be measured in real time, test Survey control principle is as shown in Figure 2.
5) computing machine 12 starts drive motor 17 by electric machine controller 14, the P that drive motor 17 drags automatic transmission 3 to be measured keeps off the rotation of halting mechanism spreadet spreadet wheel, computing machine 12 starts the cumulative time automatically, after computing machine 12 timing reaches setting-up time, computing machine 12 controls electric machine controller 14 and stops drive motor 17, and the work tooth realizing spreadet spreadet wheel in process of the test selects randomness.
6) computing machine 12 controls the shift handle that gear shifting manipulator 20 handles selector 18, and the halting mechanism income P that selector 18 controls automatic transmission 3 to be measured by gear-shifting inhaul cable 19 keeps off; And computing machine 12 applies torsional load by semiaxis 4 for automatic transmission 3 to be measured gradually by loading control 11 start-up loading device 7, keep off torque under parking operating mode on automatic transmission semiaxis to simulate car load P; Meanwhile, the dtc signal that computing machine 12 is collected by data acquisition unit 13 Real-Time Monitoring torque sensor 5, according to the level of torque collected, computing machine 12 judges that P keeps off income success or not.
7) if computing machine 12 collects the dtc signal of torque sensor 5 much smaller than setting load, then represent that P keeps off income failure, computing machine 12 terminates test automatically; If torque value reaches setting load on the semiaxis that computing machine 12 collects, then computing machine 12 starts self-clocking simultaneously, until the torsional load load time of automatic transmission 3 semiaxis to be measured reaches the stipulated time, computing machine 12 clamps brake disc by brake monitor 10 control brake 9, to realize simulating the function stepping on foot brake before real vehicle stays out P gear.
8) computing machine 12 controls gear shifting manipulator 20 and handles selector 18 and stay out P gear by gear-shifting inhaul cable 19, and when P gear is stayed out successfully, computing machine 12 stops loading by loading control 11 controlled loading device 7; Then computing machine 12 discharges brake disc by brake monitor 10 control brake 9 again.
9) computing machine 12 automatically bulk registration test number (TN), and computing machine 12 is automatically more current has completed test number (TN) and regulation test number (TN), complete test number (TN) reach regulation test number (TN) when computing machine 12 monitors, then computing machine 12 stops testing automatically.
10) above-mentioned 5 are repeated) ~ 9) process of the test, until P keeps off parking failure, namely halting mechanism lost efficacy, and computing machine 12 terminates test automatically.
The automatic transmission P utilizing test measuring method of the present invention to obtain keeps off halting mechanism data of fatigue life accurately and reliably, and can keep off halting mechanism fatigue endurance test process torque Changing Pattern by omnidistance record automatic transmission P, measurement result of the present invention keeps off the great significance for design of halting mechanism to optimizing automatic transmission P.
Finally it should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention but not restriction technologies scheme, those of ordinary skill in the art is to be understood that, those are modified to technical scheme of the present invention or equivalent replacement, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of right of the present invention.
Claims (1)
1. automatic gearbox P keeps off a halting mechanism fatigue endurance test measuring method, it is characterized in that:
1) automatic transmission to be measured being installed locator meams according to real vehicle is fixed on test measurement mechanism;
2) according to the spatial relation of the relative automatic transmission of selector on real vehicle, selector is mounted on test measurement mechanism, and gear-shifting inhaul cable is kept off halting mechanism with selector with the P of automatic transmission to be measured according to real vehicle connected mode is connected;
3) input shaft of automatic transmission to be measured is connected with drive motor, torque sensor connects automatic transmission semiaxis to be measured and loader side output shaft, utilize torque sensor directly to measure torque on automatic transmission semiaxis to be measured, and loader opposite side output shaft is connected with the brake disc axle of detent;
4) computing machine starts drive motor by electric machine controller, drag automatic transmission P to be measured by drive motor and keep off the rotation of halting mechanism spreadet spreadet wheel, simultaneously, computing machine starts timing automatically, after reaching setting-up time when Computer, computing machine controls electric machine controller and stops drive motor work, and the work tooth realizing spreadet spreadet wheel in process of the test selects randomness;
5) computing machine controls gear shifting manipulator and utilizes gear shifting manipulator manipulation selector, and the halting mechanism income P that selector controls automatic transmission to be measured by gear-shifting inhaul cable keeps off; Then computing machine applies torsional load by the semiaxis that loading control start-up loading device be automatic transmission to be measured gradually, to simulate under car load P gear parking operating mode moment of torsion on automatic transmission semiaxis to be measured; Meanwhile, the dtc signal that computing machine is exported by data acquisition unit Real-time Collection torque sensor, and carry out multilevel iudge, record and display, according to automatic transmission to be measured half shaft torque collected, computing machine judges that P keeps off income success or not;
6) if computer acquisition to torque sensor torque value much smaller than setting load, then represent P keep off income failure, computing machine automatically terminate test; If computer acquisition reaches setting load to the torque value of torque sensor, then computing machine starts timing automatically, until the torsional load load time of automatic transmission semiaxis to be measured reaches setting-up time, computing machine is by brake monitor control brake clamping brake disc;
7) computing machine controls gear shifting manipulator, handles selector and stays out P gear by gear-shifting inhaul cable, and when P gear is stayed out successfully, computing machine stops loading by loading control controlled loading device; Then computing machine is again by brake monitor control brake release brake disc;
8) computing machine repeats above-mentioned 4 automatically) ~ 7) process of the test, and automatic bulk registration test number (TN), until complete regulation test number (TN) or the inefficacy of P gear halting mechanism, computing machine terminates test automatically.
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| CN201510158055.XA CN104697792B (en) | 2015-04-03 | 2015-04-03 | Fatigue endurance test measuring method for automobile automatic gearbox P-gear parking mechanism |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136455A (en) * | 2015-10-13 | 2015-12-09 | 哈尔滨东安汽车发动机制造有限公司 | Parking rolling bar spring reliability test device and test method |
| CN106769106A (en) * | 2017-03-14 | 2017-05-31 | 株洲欧格瑞传动股份有限公司 | The ramp parking simulating test device and method of testing of automobile P gear systems |
| CN107063714A (en) * | 2017-04-28 | 2017-08-18 | 重庆长安汽车股份有限公司 | A kind of pure electric automobile P keeps off halting mechanism endurance test method |
| CN111289246A (en) * | 2018-12-06 | 2020-06-16 | 广州汽车集团股份有限公司 | Durability test method for parking mechanism of double-clutch automatic transmission |
| CN111766078A (en) * | 2019-03-31 | 2020-10-13 | 上海华依科技集团股份有限公司 | Test system and test method for reliability test of electronic parking mechanism |
| CN112067284A (en) * | 2020-09-09 | 2020-12-11 | 广州汽车集团股份有限公司 | Off-line detection method and device for automobile parking mechanism |
| CN113759878A (en) * | 2021-09-26 | 2021-12-07 | 重庆美沣秦安汽车驱动系统有限公司 | Control system, method and terminal for combined action of P-gear actuator and motor |
| CN113820127A (en) * | 2021-09-22 | 2021-12-21 | 哈尔滨东安汽车发动机制造有限公司 | Method for testing reliability of parking mechanism of automatic transmission |
| CN114624021A (en) * | 2022-02-22 | 2022-06-14 | 东风汽车集团股份有限公司 | Test bed, transmission locking mechanism torsion fatigue test method and related equipment |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105136455A (en) * | 2015-10-13 | 2015-12-09 | 哈尔滨东安汽车发动机制造有限公司 | Parking rolling bar spring reliability test device and test method |
| CN106769106A (en) * | 2017-03-14 | 2017-05-31 | 株洲欧格瑞传动股份有限公司 | The ramp parking simulating test device and method of testing of automobile P gear systems |
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| CN111289246A (en) * | 2018-12-06 | 2020-06-16 | 广州汽车集团股份有限公司 | Durability test method for parking mechanism of double-clutch automatic transmission |
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| CN111766078B (en) * | 2019-03-31 | 2022-08-19 | 上海华依科技集团股份有限公司 | Test method for reliability test of electronic parking mechanism |
| CN112067284A (en) * | 2020-09-09 | 2020-12-11 | 广州汽车集团股份有限公司 | Off-line detection method and device for automobile parking mechanism |
| CN113820127A (en) * | 2021-09-22 | 2021-12-21 | 哈尔滨东安汽车发动机制造有限公司 | Method for testing reliability of parking mechanism of automatic transmission |
| CN113759878A (en) * | 2021-09-26 | 2021-12-07 | 重庆美沣秦安汽车驱动系统有限公司 | Control system, method and terminal for combined action of P-gear actuator and motor |
| CN113759878B (en) * | 2021-09-26 | 2023-08-29 | 重庆美沣秦安汽车驱动系统有限公司 | Control system, method and terminal for joint action of P-gear actuator and motor |
| CN114624021A (en) * | 2022-02-22 | 2022-06-14 | 东风汽车集团股份有限公司 | Test bed, transmission locking mechanism torsion fatigue test method and related equipment |
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