РАЗРАБОТКА МОБИЛЬНОГО КОНТРОЛЬНО-ДИАГНОСТИЧЕСКОГО УСТРОЙСТВА

Abstract

Service and repair of operating and servicing organizations are largely equipped with outdated, low-power, highly specialized bench equipment from former specialized enterprises and do not always meet the technical requirements of the manufacturer, especially for conducting quality control programs for the repair of powerful and modern tractors. These circumstances together reduce the reliability of the obtained diagnostic parameters and may lead to the risk of errors in determining the technical readiness of the repaired equipment, in particular, internal combustion engines, transmission units and chassis, hydraulic drive. (Research purpose) The research purpose is in developing a mobile control and diagnostic device for monitoring the power and fuel consumption of the internal combustion engine, as well as the quality of repair of hydrostatic transmission and hydraulic drive units. (Materials and methods) The article presents an analysis of scientific works on improving methods for diagnosing energy indicators of mobile agricultural machinery, as well as conducted extensive research on the use of axial plunger pumps and throttling the flow of liquid injected by them with a constant and variable cross-section throttle for engine braking. (Results and discussion) Authors developed an experimental model of a mobile control and diagnostic device and experimentally tested the methods for determining its parameters and control and diagnostic operations. (Conclusions) The use of the proposed mobile control and diagnostic device will eliminate excessive fuel consumption by tractors when reducing the effective power of their internal combustion engines below the permissible limits, and will also allow the diagnosis of hydrostatic transmission units in the conditions of agricultural and service enterprises and exclude the sending of serviceable units with unused resources for repair.