Improvement of the method of checking the channels for measuring the braking parameters of vehicles on the inertial roller stand

Abstract

In the conditions of a stable trend, the increase in the number of rolling stocks, primarily due to the passenger cars of individual owners, will require increased attention to the control of technical condition in the future. This applies to car systems that affect road safety. The key of such systems is the braking system. A qualitative check of the technical condition can be carried out with the help of tools (stands). In operational diagnostics, power stands for diagnosing braking systems are the most common. As various studies show, more reliable information about the condition of the braking system can be obtained with the help of inertial roller stands.

Also, such equipment can be used in conducting research. This is due to the fact that the inertial method of diagnosing the brake system allows simulating the actual temperature and speed regimes of the brake system. Therefore, the issue of creating high-quality diagnostic equipment is urgent.

Another argument for using the inertial method of checking braking systems on high-speed stands is the possibility of fully checking modern braking systems that are equipped with ABS.

The inertial roller stand has other principles of implementation and structure of the measuring system. An important principle for the measuring system is to ensure the necessary accuracy of registration of diagnostic parameters. It is also determined by the requirements of the relevant standards for such equipment. The metrological characteristics of the measuring system of the roller stand are determined by the type of the primary sensor. In addition, an important aspect is the issue of periodic metrological certification of measuring equipment.

The article examines the methods of checking the channels of the measuring system of the inertial roller stand, which was created at the KhNAНU at the department of technical operation and service of cars named after Govorushchenko M.Ya. and is part of a mobile car diagnostic station. The main parameters characterizing the condition of the braking system are permanent deceleration, activation time, braking distance, and the time of activation of the device for pressing the brake pedal.

The developed methods of metrological inspection of the channels of the measuring system allow for the development of a program of periodic inspection of measuring equipment by standardization bodies.

Keywords: roller stand, braking system, permanent deceleration, activation time, braking distance, metrological control.