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The work is aimed at increasing the reliability, accuracy, information content and depth of the process of diagnosing the cylinder-piston engine group. For this, an automated diagnostic system has been developed, which includes a system unit with a monitor, special software for measuring and processing information, a measuring analog-to-digital module, adapters for connecting to the engine. The diagnostic system allows you to record the change in pressure of the cylinder for every degree of rotation of the crankshaft with an error that does not exceed 1.7%. Measurements are performed in test mode, when the crankshaft of the engine is scrolled with a starter, and strain gauges are screwed in place of spark plugs. The measurement results are presented in the form of diagrams, text and digital values. The system also allows you to save, reproduce and transmit diagnostic information in digital, graphic and text form.

This article describes experimental research results of the electropneumatic clutch control device for the mechanical transmission. The aim is to assess electropneumatic clutch control device characteristics to regulate both mechanical and robotic transmission. The feature of the clutch control system having the electropneumatic actuator on the basis of a power cylinder is the use of a control module that consists of an acceleration valve and two electropneumatic valves. A new structural relationship between the electropneumatic clutch control device elements on the basis of the new acceleration valve design is suggested. The assessment of mass and dimension parameters of well-known devices and this electropneumatic clutch control device is provided. A new approach to choose automated clutch control system parameters taking into account the relay electropneumatic control system operation features is suggested.