Vehicle wind tunnel mud throwing testing device and method

Abstract

The invention discloses a vehicle wind tunnel mud throwing testing device which comprises a testbed, a plurality of supporting rods arranged at the four corners inside the region formed by the wheel,a mud water channel which is arranged below the testbed and corresponds to the wheels, and a wind tunnel system arranged right ahead of a to-be-tested vehicle model, wherein the height of the supporting rods is adjustable, the supporting rods are used for fixedly supporting the to-be-tested vehicle model, and mud water spraying openings are formed at the vertex angle, in front of the wheels, in the axial direction of the testbed. According to the vehicle wind tunnel mud throwing testing device, the various-condition wheel mud throwing testing condition can be covered, and the device is simplein structure and convenient to operate. The invention further provides a vehicle wind tunnel mud throwing testing method, the relative motion between air and the running vehicle can be simulated, thevarious-condition wheel mud throwing testing condition is covered, the size of a fender is adjusted, and the powerful basis is provided for vehicle shape fine adjustment.

Description

technical field [0001] The invention relates to the technical field of vehicle wind tunnel mud rejection test, and more specifically, the invention relates to a vehicle wind tunnel mud rejection test device and a test method thereof. Background technique [0002] When the vehicle is driving in rainy days, after the front and rear wheels are splashed with water, due to design defects in tires, fenders, aerodynamics, etc., it is easy to cause the thrown sand to adhere to the side surface of the vehicle body, the rear of the vehicle, etc., causing surface pollution of the vehicle body. As market users are becoming more and more demanding on vehicles, automobile manufacturers must not only meet their quality and functional requirements, but also pay more and more attention to the cleanliness of the body surface in order to improve market competitiveness. At present, when carrying out related tests in China, rainy day road tests are often used to directly observe the pollution of...

AI Technical Summary

Problems solved by technology

At present, when carrying out related tests in China, rainy day road tests are often used to directly observe the pollution of the side surface of the car body by the mud dumped by the wheels. Additional R&D costs

[0003] Chinese invention patent CN 104865076 provides a vehicle-mounted mud throwing device, which sprays mud directly to the tires during the driving process of the car. Although it overcomes the limitations of weather conditions, it still has certain defects: (1) the additional device takes up a large space, and the layout It is inconvenient and will cause certain road pollution, which has great limitations; (2) The influence of the airflow generated during the driving process of the vehicle is ignored, and the measurement error is relatively large; (3) The vehicle speed, wind speed, muddy water density, The comprehensive influence of factors such as the amount of mud and water on mud rejection, less covering conditions

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