A method for measuring automobile resistance
A measurement method and resistance technology, applied in the direction of instrument, geometric CAD, calculation, etc., can solve the problem of inability to accurately evaluate rolling resistance, internal resistance and wind resistance.
Inactive Publication Date: 2019-11-05
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Problems solved by technology
[0005] The invention provides a method for measuring automobile resistance to solve the problem in the prior art that the rolling resistance, internal resistance and wind resistance of the model to be developed cannot be accurately evaluated. The method for measuring automobile resistance of the invention can measure the rolling resistance, The fitting analysis and calculation of internal resistance and wind resistance provide a reliable basis for the evaluation of the power level and economic level of the model to be developed
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[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0024] Embodiments of the present invention provide a method for measuring automobile resistance, such as figure 1 shown, including the following steps:
[0025] Step S10: Determine the first comparison model and the second comparison model.
[0026] In the embodiment of the present invention, preferably, the first comparison model and the second comparison model are selected according to the tire structure of the model to be developed and the outer contour of the cab.
[0027] The sum of rolling resistance and internal resistance is related to the total mass of the vehicle and the structure of the tire. The size of the wind resistance depends on the shape and width of the cab. The outer contour of the cab is used to sel...
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The invention provides a vehicle resistance measuring method. The method includes the following steps of determining a first comparison vehicle type and a second comparison vehicle type, and obtaining first total resistance of the first comparison vehicle type; obtaining second wind resistance of the second comparison vehicle type, calculating the resistance sum of the rolling resistance and internal resistance of the first comparison vehicle type according to the first total resistance and the second wind resistance, and calculating second total resistance of a vehicle type to be developed according to the second wind resistance and the resistance sum of the internal resistance and the rolling resistance. According to the vehicle resistance measuring method, when the power assembly system modeling and cab modeling of the vehicle type to be developed are changed compared with basic vehicle types, measurement and fitting analysis and calculation can still be conducted on the rolling resistance, internal resistance and wind resistance of the vehicle type to be developed, and reliable bases are provided for evaluation of the power-performance level and economical-performance level of the vehicle type to be developed.
Description
technical field [0001] The invention relates to the technical field of automobile simulation calculation, in particular to a method for measuring automobile resistance. Background technique [0002] In order to accurately define the resistance of the vehicle to be developed, it is necessary to analyze and fit the resistance of the vehicle to be developed, so as to evaluate the resistance of the vehicle in the development stage as accurately as possible, and guide the development of vehicle power and economy in the vehicle design stage. [0003] When the powertrain system of the model to be developed changes, the resistance of the model to be developed will often change. For example, when the tire changes, the rolling resistance and internal resistance will change; when the shape of the cab of the model to be developed changes , the wind resistance of the model to be developed will also change accordingly, so it is often impossible to accurately evaluate the rolling resistanc...
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IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20G06F2119/06
Inventor 何井龙陶世波陈瑶
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD