Vehicle test method employing chassis dynamometer and drum adhering force adjusting method

A technology of a chassis dynamometer and an adjustment method, which is applied in vehicle testing, wheel testing, machine/structural component testing, etc., can solve the problem of inaccurate vehicle performance test results, inability to truly reflect vehicle performance, and inability to replace drums Drum surface and other problems to avoid the wheel slipping on the drum

Inactive Publication Date: 2015-08-19
BEIQI FOTON MOTOR CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] Since the drum surface of the chassis dynamometer cannot be replaced, that is, the adhesion coefficient of the drum cannot be adjusted at will.
However, in the high torque test of the whole vehicle with different design total mass, such as traction performance test and heat balance test, because the surface adhesion coefficient of the drum cannot be adjusted, the adhesion provided by the drum may not be able to meet the requirements of the normal driving of the car. Necessary, it is easy to cause the wheels to slip and affect the normal test, and it will also lead to inaccurate test results of vehicle performance, which cannot truly reflect the performance of the vehicle.

Method used

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  • Vehicle test method employing chassis dynamometer and drum adhering force adjusting method

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Embodiment Construction

[0020] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0021] In the present invention, unless otherwise stated, the orientation words used should be understood in combination with the description in this specification and the direction in actual application.

[0022] The invention provides a method for adjusting drum adhesion of a chassis dynamometer of a vehicle, wherein the adjusting method includes adding counterweight to the tested vehicle.

[0023] During the test process using the chassis dynamometer, the adhesion provided by the drum may not be able to meet the needs of the normal driving of the vehicle, and it is easy to cause the wheels to slip on the drum and affect the normal test, especially in the car....

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Abstract

The invention discloses a drum adhering force adjusting method for a chassis dynamometer for a vehicle. The adjusting method includes adding weight on the vehicle to be tested. The invention also provides a vehicle test method employing the chassis dynamometer. According to the invention, the drum adhering force can be adjusted in a condition that the drum surface adhering indexes of the drum remains unchanged. By adopting the technical scheme of adding weight on the to-be-tested vehicle, namely, by adding the normal reaction on a driving wheel of the vehicle for guaranteeing the adhering force on the surface of the drum, slippage of the wheel on the drum during a test process is avoided.

Description

technical field [0001] The invention relates to the field of vehicle testing, in particular to a method for adjusting drum adhesion of a chassis dynamometer for a vehicle, and a method for testing a vehicle with the chassis dynamometer. Background technique [0002] The chassis dynamometer is a special measuring device used to measure the output power, torque (or driving force) and rotational speed (or speed) of the driving wheel of the car. [0003] The chassis dynamometer includes a rotating drum, on which the driving wheel of the vehicle is placed during the test, and the dynamometer applies a resistance torque to the rotating drum to simulate the resistance of the vehicle when driving on the road, so that the vehicle is driven on the chassis dynamometer. Simulate road driving, so as to conduct vehicle performance tests on the chassis dynamometer, such as acceleration performance, maximum speed, fuel consumption, working condition emissions and other test items. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007G01M17/013
Inventor 安娜胡小莺王雄爽连俊峰李兆庆张宪
Owner BEIQI FOTON MOTOR CO LTD
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