International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The article assesses the possibility of using plain bearings (using the example of radial bearings) in high-speed microturbines (up to 60,000 rpm). The results of mathematical modeling of the thermal state of bearings and the oil layer between the shaft and the bearing surface are presented. A detailed description of the stand, designed to analyze the effectiveness of radial and thrust composite plain bearings, is given. The test bench allows testing of radial, thrust and rolling bearings, taking into account the deformation of the shaft from the weight of the turbine and compressor wheels of the microturbine. The results of an experimental study demonstrate high accuracy of calculations.

The new requirements of modern automotives become more stringent corresponding to power, torque, fuel economy and ecology legislations [2]. The main factor in this area is the automotive engine fuel system, which is controlled by the electronic control unit (ECU). The electronic control of the Spark Ignition Engines (SI engines), as well as the Direct Ignition Engines (DI engines) is based on the certain sensors signals, program maps and management algorithms. The advanced automotive scientific research centres and automotive manufacturers design and develop a specialized laboratory, stationary and movable test benches and train complex for researching and testing of automotive sensors and actuators, automotive prototypes and series, and automotive units. The test benches for internal combustion engine (ICE) management are the equipment, which are used for ICE development, specification and testing. These test benches allow the engine to work at different work modes and states and ensured measurement of the engine physical work parameters. The design of the engine management test benches enable easy access to the ICE certain systems, units and details. This paper includes results of the generating a control program using the Flowcode 7.0 software of test bench SKAD-1 for computer management of automotive gasoline injection engine, with ability to programming input parameters and measuring the output results.