CN113916547A - Automobile acceleration performance test method - Google Patents
Automobile acceleration performance test method Download PDFInfo
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- CN113916547A CN113916547A CN202111125430.2A CN202111125430A CN113916547A CN 113916547 A CN113916547 A CN 113916547A CN 202111125430 A CN202111125430 A CN 202111125430A CN 113916547 A CN113916547 A CN 113916547A
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Abstract
A method for testing acceleration performance of an automobile includes the steps of accelerating a tested vehicle at a full accelerator under the condition that wheel slip is minimum to complete acceleration test, recording positions of an accelerator pedal and speed data at different moments in the test process, determining data segments of full accelerator acceleration of each gear based on the recorded data, performing linear fitting on the data segments of full accelerator acceleration of each gear respectively, and obtaining tangent slope through fitting, namely acceleration of the corresponding gear. The acceleration capacity of each gear is represented by the acceleration under each gear in the design, the acceleration capacity of the vehicle in each gear can be accurately represented, the reasonability of speed ratio distribution of each gear can be analyzed, and the test process is simple, convenient and quick.
Description
Technical Field
The invention belongs to the technical field of automobile tests, and particularly relates to a method for testing automobile dynamic property.
Background
The dynamic performance index of the automobile is mainly represented by the maximum speed, the acceleration capability and the maximum climbing gradient, and is the most basic and important performance in the service performance of the automobile.
In China, the acceleration capability in the dynamic index is obtained by an automobile manufacturer through a sample automobile test according to the test standard GB/T12543 specified by the state. According to the existing method, the main test contents are a full-throttle starting acceleration performance test and a full-throttle overrunning acceleration performance test, and the test result is acceleration time. Because only the acceleration time can be obtained, the intermediate process cannot be represented, and whether the gear ratio design of each gear is scientific and reasonable cannot be known, which is not beneficial to deeply analyzing the dynamic condition; secondly, the acceleration time is related to the proficiency of the driver's operation, and varies from person to person; in addition, the commercial vehicle with more gears (especially without a synchronizer) occupies longer time for gear shifting during acceleration test, so that the test error is large, and the vehicle dynamic performance cannot be accurately evaluated only through the acceleration time.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provide a test method for the dynamic property of an automobile, which can accurately represent the acceleration capability of the automobile in each gear.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
a test method for automobile acceleration performance sequentially comprises the following steps:
step one, at least one of a manual mode test and an automatic mode test is carried out on the tested vehicle, and the position of an accelerator pedal and the speed data at different moments in the test process are recorded, wherein,
the manual mode test is as follows: the manual transmission is placed in a 1-gear state when the detected vehicle is static, then full accelerator acceleration is performed under the condition that the wheel slip is minimum, the speed is increased to a 2-gear state after the engine reaches a rated rotating speed, full accelerator acceleration is continued, the speed is increased to a 3-gear state after the engine reaches the rated rotating speed, and the like until the acceleration of the highest gear is completed;
the automatic mode test is as follows: the automatic transmission is placed in a D gear under the condition that the detected vehicle is static, and then the vehicle is quickly started and the full accelerator is kept to be accelerated under the condition that the wheel slip is minimum until the detected vehicle reaches the highest speed;
and secondly, determining a data segment of the full-accelerator acceleration of each gear based on the recorded data, and then respectively performing linear fitting on the data segment of the full-accelerator acceleration of each gear, wherein the tangential slope obtained by fitting is the acceleration of the corresponding gear.
In the first step, if the tested vehicle adopts a manual transmission, a manual mode test is carried out;
if the vehicle under test employs an automatic transmission other than the CVT transmission, an automatic mode test is performed.
In the first step, all electrical appliances and windows on the tested vehicle are closed in the processes of manual mode testing and automatic mode testing.
In the first step, the accelerator pedal position data is acquired by an OBD interface, and the accelerator pedal position and the vehicle speed data at different moments are recorded by V-BOX equipment connected with the OBD interface.
And step three, representing the acceleration capacity of each gear according to the acceleration magnitude of each gear, wherein if the acceleration of a certain gear is larger, the acceleration capacity of the gear is stronger.
In the first step, the manual mode test and the automatic mode test adopt a mode of at least testing back and forth three times;
and in the second step, the acceleration of each gear is the average value of the test results of three times of round trip.
In the second step, the data section of the full accelerator acceleration is the data section of the accelerator pedal position of 100%.
In the second step, if the automatic mode test is adopted, determining the data section of the full accelerator acceleration of each gear according to the principle that an obvious turning point exists on a vehicle speed curve when the gearbox automatically upshifts.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to a method for testing the acceleration performance of an automobile, which comprises the steps of accelerating the full accelerator of a tested vehicle under the condition of minimum wheel slip to finish the acceleration test, and records the position of the accelerator pedal and the speed data at different moments in the test process, determines the data section of the full accelerator acceleration of each gear based on the recorded data, then linear fitting is carried out on the data segments of all-throttle acceleration of each gear, the tangential slope obtained by fitting is the acceleration of the corresponding gear, the method uses the acceleration of each gear to represent the acceleration capacity of each gear, thereby not only effectively avoiding the influence of the gear shifting time on the result in the test process, but also accurately representing the acceleration capacity of the vehicle in each gear, and the method is convenient to check the theoretical calculation result of the dynamic property, is beneficial to analyzing the reasonability of the speed ratio distribution of each gear, and is convenient and quick to operate and simple in data processing process. Therefore, the method can accurately represent the acceleration capacity of the vehicle in each gear, is beneficial to analyzing the reasonability of the speed ratio distribution of each gear, and is simple, convenient and quick in test process.
Drawings
Fig. 1 is a velocity profile derived from a V-BOX apparatus in example 1.
Fig. 2 is a full throttle acceleration data segment for each gear determined in example 1.
FIG. 3 shows the results of the linear fitting of example 1.
Fig. 4 is a velocity profile derived from the V-BOX apparatus in example 2.
FIG. 5 shows the results of the linear fitting of example 2.
Detailed Description
The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.
A test method for automobile acceleration performance sequentially comprises the following steps:
step one, at least one of a manual mode test and an automatic mode test is carried out on the tested vehicle, and the position of an accelerator pedal and the speed data at different moments in the test process are recorded, wherein,
the manual mode test is as follows: the manual transmission is placed in a 1-gear state when the detected vehicle is static, then full accelerator acceleration is performed under the condition that the wheel slip is minimum, the speed is increased to a 2-gear state after the engine reaches a rated rotating speed, full accelerator acceleration is continued, the speed is increased to a 3-gear state after the engine reaches the rated rotating speed, and the like until the acceleration of the highest gear is completed;
the automatic mode test is as follows: the automatic transmission is placed in a D gear under the condition that the detected vehicle is static, and then the vehicle is quickly started and the full accelerator is kept to be accelerated under the condition that the wheel slip is minimum until the detected vehicle reaches the highest speed;
and secondly, determining a data segment of the full-accelerator acceleration of each gear based on the recorded data, and then respectively performing linear fitting on the data segment of the full-accelerator acceleration of each gear, wherein the tangential slope obtained by fitting is the acceleration of the corresponding gear.
In the first step, if the tested vehicle adopts a manual transmission, a manual mode test is carried out;
if the vehicle under test employs an automatic transmission other than the CVT transmission, an automatic mode test is performed.
In the first step, all electrical appliances and windows on the tested vehicle are closed in the processes of manual mode testing and automatic mode testing.
In the first step, the accelerator pedal position data is acquired by an OBD interface, and the accelerator pedal position and the vehicle speed data at different moments are recorded by V-BOX equipment connected with the OBD interface.
And step three, representing the acceleration capacity of each gear according to the acceleration magnitude of each gear, wherein if the acceleration of a certain gear is larger, the acceleration capacity of the gear is stronger.
In the first step, the manual mode test and the automatic mode test adopt a mode of at least testing back and forth three times;
and in the second step, the acceleration of each gear is the average value of the test results of three times of round trip.
In the second step, the data section of the full accelerator acceleration is the data section of the accelerator pedal position of 100%.
In the second step, if the automatic mode test is adopted, determining the data section of the full accelerator acceleration of each gear according to the principle that an obvious turning point exists on a vehicle speed curve when the gearbox automatically upshifts.
The principle of the invention is illustrated as follows:
the invention provides an automobile acceleration performance test method, which represents the acceleration capacity of each gear by testing the acceleration of each gear of a vehicle and has the following characteristics:
1. the V-box and the OBD are adopted, so that the equipment is simple and universal;
2. the installation is convenient, the test time is short, and the working efficiency is high;
3. the data processing is simple and convenient, and the result expression is clear;
4. the calculation result of the dynamic theory is checked, and the reasonability of the speed ratio distribution of each gear is analyzed;
5. the influence of time errors generated in the gear shifting process in the acceleration performance test on the result can be avoided.
Example 1:
a test method for the acceleration performance of an automobile is characterized in that a tested vehicle adopts a manual transmission and sequentially comprises the following steps:
1. the method comprises the following steps of carrying out manual mode test on a tested vehicle, acquiring accelerator pedal position data through an OBD interface, and recording the accelerator pedal position and vehicle speed data at different moments in the test process through V-BOX equipment connected with the OBD interface, wherein the manual mode test specifically comprises the following steps:
closing all electric appliances and windows on the tested vehicle, placing the manual transmission in a 1-gear state when the tested vehicle is static, then accelerating the full accelerator under the condition of minimum wheel slip to ensure that the vehicle achieves the maximum acceleration performance, increasing the speed to 2-gear after the engine achieves the rated speed, continuing accelerating the full accelerator, increasing the speed to 3-gear after the engine achieves the rated speed, and so on until the acceleration of the highest gear is completed, and performing a reciprocating test for three times;
2. test data is derived from the V-BOX device, as shown in fig. 1:
3. as can be seen from fig. 1, every time the vehicle under test shifts, the vehicle speed curve shows a horizontal line or a sloping line data segment with a downward trend, and the sloping line data segments with the downward trend are removed, and the rising curve data of each segment are respectively used as a full accelerator acceleration data segment of each gear, i.e. a data segment with an accelerator pedal position of 100%, as shown in fig. 2 as 1-5;
4. respectively performing linear fitting on the data segments of all-throttle acceleration of each gear to obtain a fitting straight line shown in figure 3, wherein the slope of the straight line is the acceleration of the corresponding gear;
5. and taking the average value of the accelerations of the three times of round trip as the final acceleration of the corresponding gear, wherein the magnitude of the average value can represent the acceleration capability of the gear, and if the acceleration of a certain gear is larger, the acceleration capability of the gear is stronger.
Example 2:
the test method for the acceleration performance of the automobile comprises the following steps that an AT automatic transmission is adopted by a vehicle to be tested:
1. the method comprises the following steps of carrying out automatic mode test on a tested vehicle, acquiring accelerator pedal position data through an OBD interface, and recording the accelerator pedal position and vehicle speed data at different moments in the test process through V-BOX equipment connected with the OBD interface, wherein the automatic mode test specifically comprises the following steps:
closing all electric appliances and windows on the tested vehicle, placing the automatic transmission in a D gear (selecting a motion mode if the detected vehicle is in a static state), then quickly starting the vehicle and keeping the full accelerator to accelerate under the condition of minimum wheel slip until the tested vehicle reaches the highest speed, and carrying out a round-trip test for three times;
2. test data is derived from the V-BOX device as shown in fig. 4:
3. as can be seen from fig. 4, the vehicle speed curve of each gear is basically a line segment, the vehicle speed curve has a more obvious turning point when the transmission is automatically shifted up, the vehicle speed curve shows a downward sloping line, the data segments of the descending sloping line are removed, and the data of each ascending curve is respectively used as the full accelerator acceleration data segment of each gear, namely the data segment with the position of the accelerator pedal at 100%;
4. respectively performing linear fitting on the data segments of all-throttle acceleration of each gear to obtain a fitting straight line shown in figure 5, wherein the slope of the straight line is the acceleration of the corresponding gear;
5. and taking the average value of the accelerations of the three times of round trip as the final acceleration of the corresponding gear, wherein the magnitude of the average value can represent the acceleration capability of the gear, and if the acceleration of a certain gear is larger, the acceleration capability of the gear is stronger.
Claims (8)
1. A method for testing the acceleration performance of an automobile is characterized by comprising the following steps:
the test method sequentially comprises the following steps:
step one, at least one of a manual mode test and an automatic mode test is carried out on the tested vehicle, and the position of an accelerator pedal and the speed data at different moments in the test process are recorded, wherein,
the manual mode test is as follows: the manual transmission is placed in a 1-gear state when the detected vehicle is static, then full accelerator acceleration is performed under the condition that the wheel slip is minimum, the speed is increased to a 2-gear state after the engine reaches a rated rotating speed, full accelerator acceleration is continued, the speed is increased to a 3-gear state after the engine reaches the rated rotating speed, and the like until the acceleration of the highest gear is completed;
the automatic mode test is as follows: the automatic transmission is placed in a D gear under the condition that the detected vehicle is static, and then the vehicle is quickly started and the full accelerator is kept to be accelerated under the condition that the wheel slip is minimum until the detected vehicle reaches the highest speed;
and secondly, determining a data segment of the full-accelerator acceleration of each gear based on the recorded data, and then respectively performing linear fitting on the data segment of the full-accelerator acceleration of each gear, wherein the tangential slope obtained by fitting is the acceleration of the corresponding gear.
2. The method for testing the acceleration performance of an automobile according to claim 1, wherein:
in the first step, if the tested vehicle adopts a manual transmission, a manual mode test is carried out;
if the vehicle under test employs an automatic transmission other than the CVT transmission, an automatic mode test is performed.
3. The method for testing acceleration performance of an automobile according to claim 1 or 2, characterized in that: in the first step, all electrical appliances and windows on the tested vehicle are closed in the processes of manual mode testing and automatic mode testing.
4. The method for testing acceleration performance of an automobile according to claim 1 or 2, characterized in that: in the first step, the accelerator pedal position data is acquired by an OBD interface, and the accelerator pedal position and the vehicle speed data at different moments are recorded by V-BOX equipment connected with the OBD interface.
5. The method for testing acceleration performance of an automobile according to claim 1 or 2, characterized in that: and step three, representing the acceleration capacity of each gear according to the acceleration magnitude of each gear, wherein if the acceleration of a certain gear is larger, the acceleration capacity of the gear is stronger.
6. The method for testing acceleration performance of an automobile according to claim 1 or 2, characterized in that:
in the first step, the manual mode test and the automatic mode test adopt a mode of at least testing back and forth three times;
and in the second step, the acceleration of each gear is the average value of the test results of three times of round trip.
7. The method for testing acceleration performance of an automobile according to claim 1 or 2, characterized in that: in the second step, the data section of the full accelerator acceleration is the data section of the accelerator pedal position of 100%.
8. The method for testing acceleration performance of an automobile according to claim 1 or 2, characterized in that: in the second step, if the automatic mode test is adopted, determining the data section of the full accelerator acceleration of each gear according to the principle that an obvious turning point exists on a vehicle speed curve when the gearbox automatically upshifts.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264487A (en) * | 2022-01-19 | 2022-04-01 | 神龙汽车有限公司 | Manual-automatic integrated vehicle dynamic performance testing method and analysis optimization method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000338004A (en) * | 1999-05-31 | 2000-12-08 | Horiba Ltd | Travelling performance learning method for motor- vehicle drive system, motor-vehicle drive system, and recording medium to record travelling performance learning program |
| WO2017099689A1 (en) * | 2015-12-10 | 2017-06-15 | Tofas Turk Otomobil Fabrikasi Anonim Sirketi | A vehicle drivability evaluation system and method |
| KR20170101536A (en) * | 2016-02-29 | 2017-09-06 | 전광섭 | Apparatus for Car's Drive Performance Test using Electronic type Accelerator Pedal |
| US20180335369A1 (en) * | 2017-05-16 | 2018-11-22 | Dionysios Mylonas | Method for measuring automobile horsepower using an acceloremeter |
| US20190086926A1 (en) * | 2017-09-18 | 2019-03-21 | Baidu Online Network Technology (Beijing) Co., Ltd. | Method and apparatus for exporting driving property index of autonomous vehicle |
| JP6536726B1 (en) * | 2018-07-20 | 2019-07-03 | 株式会社明電舎 | Accelerator play measurement device, accelerator play measurement method, program, and medium |
| CN113029586A (en) * | 2021-02-19 | 2021-06-25 | 东风汽车集团股份有限公司 | Method and system for evaluating automobile starting and uniform speed driving dynamic property |
| CN113029593A (en) * | 2021-03-26 | 2021-06-25 | 奇瑞新能源汽车股份有限公司 | Method and device for evaluating drivability of automobile |
| CN113109056A (en) * | 2021-03-01 | 2021-07-13 | 东风汽车集团股份有限公司 | Method and device for evaluating acceleration performance of vehicle accelerator starting power |
| CN113281065A (en) * | 2021-07-23 | 2021-08-20 | 江铃汽车股份有限公司 | Dynamic test and evaluation method for working conditions of medium and small throttle of automatic transmission automobile |
-
2021
- 2021-09-26 CN CN202111125430.2A patent/CN113916547B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000338004A (en) * | 1999-05-31 | 2000-12-08 | Horiba Ltd | Travelling performance learning method for motor- vehicle drive system, motor-vehicle drive system, and recording medium to record travelling performance learning program |
| WO2017099689A1 (en) * | 2015-12-10 | 2017-06-15 | Tofas Turk Otomobil Fabrikasi Anonim Sirketi | A vehicle drivability evaluation system and method |
| KR20170101536A (en) * | 2016-02-29 | 2017-09-06 | 전광섭 | Apparatus for Car's Drive Performance Test using Electronic type Accelerator Pedal |
| US20180335369A1 (en) * | 2017-05-16 | 2018-11-22 | Dionysios Mylonas | Method for measuring automobile horsepower using an acceloremeter |
| US20190086926A1 (en) * | 2017-09-18 | 2019-03-21 | Baidu Online Network Technology (Beijing) Co., Ltd. | Method and apparatus for exporting driving property index of autonomous vehicle |
| JP6536726B1 (en) * | 2018-07-20 | 2019-07-03 | 株式会社明電舎 | Accelerator play measurement device, accelerator play measurement method, program, and medium |
| CN113029586A (en) * | 2021-02-19 | 2021-06-25 | 东风汽车集团股份有限公司 | Method and system for evaluating automobile starting and uniform speed driving dynamic property |
| CN113109056A (en) * | 2021-03-01 | 2021-07-13 | 东风汽车集团股份有限公司 | Method and device for evaluating acceleration performance of vehicle accelerator starting power |
| CN113029593A (en) * | 2021-03-26 | 2021-06-25 | 奇瑞新能源汽车股份有限公司 | Method and device for evaluating drivability of automobile |
| CN113281065A (en) * | 2021-07-23 | 2021-08-20 | 江铃汽车股份有限公司 | Dynamic test and evaluation method for working conditions of medium and small throttle of automatic transmission automobile |
Non-Patent Citations (1)
| Title |
|---|
| 彭思仑;李兴忠;张京旭;李永发;: "基于总线技术的自动变速器整车性能试验", no. 09, pages 33 - 37 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264487A (en) * | 2022-01-19 | 2022-04-01 | 神龙汽车有限公司 | Manual-automatic integrated vehicle dynamic performance testing method and analysis optimization method |
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