Power interaction carroll care full steering with boiler drum

Abstract

Analyzing the current trends in the development of automotive, you can see that each year increases the number of all-wheel drive vehicles. Among them there are high-end SUVs, universal SUVs, as well as large representative sedans. Structures vary considerably. However, such unlike cars are common in common tendencies - transmissions are becoming more and more difficult. Sophisticated mechanical devices are assisted by modern electronics.
In order to improve the accuracy of diagnosing all-wheel drive cars on the stand, it is necessary:
- application of a modular full-back inertial boom with running drums, as well as a computerized diagnostic complex with the subsequent processing of data obtained in the process of diagnosing computer data using the system method and special software;
- reproduction of real diagnostic modes, for which it is necessary to take into account the features of power interaction of the car with the stand.
The development of technical diagnostics of cars should be considered in direct connection with the development of the entire system of their technical operation. Currently, various diagnostic tools have been developed, which are used in many industries and transport. Diagnosis of the technical condition of many units and systems of cars should be considered as a special kind of physical modeling, combining physical models with full-scale devices. Diagnostic stands should provide modeling of physical processes occurring in real road conditions. It is important to realistically model the processes of interaction of vehicle elements with diagnostic equipment taking into account actual operating forces, which will improve the accuracy of vehicle diagnostics at the stand.
The article deals with modeling conditions for obtaining diagnostic information about complex objects. As an example, inspection of traction qualities of all-wheel drive cars on an inertial stand with running drums is considered. A power model of the system of interaction of a car with a stand is developed, taking into account the structural features of the stand and the features of the vehicle transmission design. The power model of the system under consideration contains the equations of equilibrium of the body and two bridges and the equations of motion of the drums and wheels of the vehicle under test. Based on the results of the analysis of operating forces, the load-sharing factor q in the vehicle-stand system was determined for the traction tests of a 4x4 vehicle.
The conclusions substantiate the possibility of using an inertial stand with running drums to test the traction qualities of all-wheel drive cars.