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Device for testing pneumatic performance of automobile

A technology for aerodynamic performance and automobiles, which can be applied to measurement devices, vehicle testing, and machine/structural component testing. Effect

Active Publication Date: 2016-11-23
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, automotive wind tunnels have problems such as high manufacturing costs, complex structures, and large footprints.

Method used

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  • Device for testing pneumatic performance of automobile
  • Device for testing pneumatic performance of automobile
  • Device for testing pneumatic performance of automobile

Examples

Experimental program
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Embodiment Construction

[0024] Such as figure 1 and figure 2 As shown, the device for testing the aerodynamic performance of automobiles in the present invention includes a carrier device 1, a pallet 3, a wheel fixing assembly 4, a support rod 10, a force-measuring balance 11, a force-measuring balance mounting frame 12, an ultrasonic anemometer 13, and a controller 15 The carrying device 1 can run on the road or on the track, and the carrying device 1 of the present embodiment is used for driving on the road; There are four through holes for accommodating the tray 3 corresponding to the wheel of the test vehicle 1 on the top; several parallel T-shaped slots are opened on the tray 3, and the bottom of each tray 3 is fixedly connected to the support rod 10; Each of the pallets 3 is provided with a wheel fixing assembly 4; as Figure 3-5 As shown, the wheel fixing assembly 4 includes two right-angle fixing plates 5, two square blocks 6, screws 7, studs 8 and nuts 9; hole, the square block 6 is also...

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Abstract

The invention discloses a device for testing the pneumatic performance of an automobile. The device is used for testing the pneumatic performance of the automobile. According to the technical scheme of the invention, each tray of the device is provided with a wheel fixing assembly and the lower surface of each tray is fixedly connected with a supporting rod. The lower end of the supporting rod is fixedly connected with a force measuring balance and the force measuring balance is arranged on a force measuring balance installation frame. The force measuring balance installation frame is fixedly installed in a carrying device. An ultrasonic anemometer is installed on the roof of a testing automobile, and is used for measuring the wind speed. The ultrasonic anemometer and the force measuring balance are both connected with a controller. An automobile speed detection device on the carrying device is connected with the controller. According to the technical scheme of the invention, the device can be used for testing the pneumatic performance of the automobile directly on the road and can simulate an acting force and an acting torque basically similar to the acting force and the acting torque of the automobile when the automobile runs normally on the road. Therefore, compared with an automobile air tunnel, measured experimental data are closer to the aerodynamic force and the aerodynamic torque of the automobile during the actual running process.

Description

technical field [0001] The invention relates to the technical field of automobile aerodynamic performance testing, in particular to a device for testing the aerodynamic performance of automobiles. Background technique [0002] As we all know, the faster the vehicle speed, the greater the resistance, and the air resistance is proportional to the square of the vehicle speed. If the air resistance accounts for a large ratio of the driving resistance of the car, it will increase the fuel consumption of the car or seriously affect the power performance of the car. According to tests, for a car running at a speed of 100 kilometers per hour, 80% of the engine output power will be used to overcome air resistance and reduce air resistance, which can effectively improve the driving economy of the car. [0003] Because, the study of the aerodynamic characteristics of the car is very meaningful. At present, the data on the aerodynamic performance of automobiles are mainly provided by ...

Claims

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Application Information

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IPC IPC(8): G01M17/007
CPCG01M17/007
Inventor 何文华周超宋洪健应智超郑宜坤孙亚博
Owner ZHEJIANG UNIV
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