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A method and device for evaluating the influence of drag torque on vehicle energy consumption

A technology for dragging torque and automobiles, which is applied in the field of evaluating the impact of dragging torque on automobile energy consumption, which can solve the problems of low accuracy and achieve the effect of improving accuracy and avoiding errors

Active Publication Date: 2020-11-24
BEIJING ELECTRIC VEHICLE
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a method and device for evaluating the influence of drag torque on automobile energy consumption, which solves the problem of low accuracy in existing methods for evaluating the influence of drag torque on automobile energy consumption

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  • A method and device for evaluating the influence of drag torque on vehicle energy consumption
  • A method and device for evaluating the influence of drag torque on vehicle energy consumption

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Embodiment Construction

[0028] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0029] Such as figure 1 As shown, the embodiment of the present invention provides a method for evaluating the impact of drag torque on vehicle energy consumption, including:

[0030] Step 101, measure the internal resistance of the test car with the brake caliper installed by the chassis dynamometer, and obtain the first internal resistance corresponding to the drag torque.

[0031] Wherein, the chassis dynamometer may be a single-drum chassis dynamometer, or a double-drum chassis dynamometer; and the vehicle may be an electric vehicle, specifically a pure electric vehicle, or a hybrid vehicle. Cars, etc., are not restricted. Preferably, the running-in mileage of the test vehicle is greater than or equal to 1000km, which helps to improve the accuracy ...

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Abstract

The invention provides a method and device for evaluating the influence of a drag torque on vehicle energy consumption. The method comprises a step of measuring a test vehicle equipped with a brake caliper through a chassis dynamometer to obtain first internal resistance, a step of performing an energy consumption test on the test vehicle equipped with the brake caliper to obtain first energy consumption, wherein the motor brake of the test vehicle equipped with a brake caliper can be carried out through an accelerator pedal, a step of carrying out internal resistance measurement on a test vehicle which is not equipped with the brake caliper to obtain second internal resistance through the chassis dynamometer, a step of performing an energy consumption test on the test vehicle which is notequipped with the brake caliper to obtain second energy consumption by using a single pedal gear, wherein the motor brake of the test vehicle which is not equipped with the brake caliper can be carried out through the accelerator pedal, and a step of evaluating the influence of the drag torque on the vehicle energy consumption according to the first internal resistance, the second internal resistance, the first energy consumption and the second energy consumption. In this way, the accuracy of evaluation can be improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a method and a device for evaluating the influence of drag torque on energy consumption of automobiles. Background technique [0002] With the rapid development of the automobile industry, automobile technology is also advancing rapidly. However, limited by the energy density of the battery and the layout of the charging infrastructure, the cruising range of the car cannot fully meet people's daily needs. How to effectively reduce the energy consumption of the car is an important research direction in the current industry. Among them, because the drag torque is too large, the resistance of the vehicle will increase, which affects the energy consumption of the vehicle to a large extent. Therefore, it is extremely important to evaluate the impact of the drag torque on the energy consumption of the vehicle. Existing methods for evaluating the impact of drag torque on vehicle en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/007
CPCG01M17/007
Inventor 张立军岳凤来靳进鹏杨永涛
Owner BEIJING ELECTRIC VEHICLE
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