Method and device for testing resistance curve
A technology of resistance curve and test method, applied in the direction of measuring device, vehicle test, machine/structural component test, etc., can solve the problem of inaccurate test results, shorten the power of the whole vehicle, meet real-time requirements, and avoid repetition sexual effect
Active Publication Date: 2020-07-28
BEIJING ELECTRIC VEHICLE
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[0004] The invention provides a resistance curve testing method and device, which are used to solve the problem in the prior art that the test environment has an influence on the test results of the road sliding resistance curve, resulting in inaccurate final test results
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[0047] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0048] Such as figure 1 As shown, the embodiment of the present invention provides a test method of the resistance curve, the test method of the resistance curve comprises:
[0049] S11. Obtain the first road sliding resistance curve corresponding to the installed tires of the vehicle during the road sliding process of the vehicle;
[0050] It should be noted that a road sliding test is performed when the installed tire is installed on the vehic...
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The present invention provides a resistance curve test method and device. The method comprises the steps of: obtaining a first road slide resistance curve corresponding to an installation tire of a vehicle in a road slide process of the vehicle; obtaining a first rolling resistance coefficient, of the installation tire, corresponding to each linear speed in a plurality of linear speeds and a second rolling resistance coefficient, of a tire to be tested, corresponding to each linear speed in the linear speeds; and determining a second rod slide resistance curve corresponding to the tire to be tested in the road slide process of the tire to be tested installed on the vehicle according to the first road slide resistance curve, the first rolling resistance coefficient, the second rolling resistance coefficient and the weight of the vehicle. The test method provided by the embodiment of the invention, the road slide resistance curves corresponding to tires with the same series of vehicle models and different rolling resistance coefficients can be obtained, and the problems of repeatability of the road slide resistance curves of the same series of vehicle models and the errors caused bylarge environmental factors.
Description
technical field [0001] The invention relates to the field of vehicle testing, in particular to a resistance curve testing method and device. Background technique [0002] In the performance development process of pure electric vehicles, the economical mileage test is generally carried out through the chassis dynamometer. The principle is to measure the driving resistance of the test vehicle on the actual road and compare the measured road sliding resistance on the chassis dynamometer. Simulation is carried out to reproduce the working conditions of the vehicle when it is running on the actual road in the laboratory, and to carry out the economic driving mileage test. [0003] The road sliding resistance curve of electric vehicles plays an important role in the economic mileage test. The main factors affecting the road sliding resistance are rolling resistance, wind resistance and acceleration resistance. The different rolling resistance coefficients of different tires direct...
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IPC IPC(8): G01M17/007G01M17/02
CPCG01M17/007G01M17/02
Inventor 王义政岳凤来冯红晶
Owner BEIJING ELECTRIC VEHICLE