A new device is offered for the analysis of motor oil contamination of the internal combustion engine with dispersed particles. Optical and ultrasonic methods for analyzing contamination of motor oils are used to obtain more informative data to estimate the concentration of pollutants in the device.  

Keywords: tribomonitoring, electrooptical device, the internal combustion engine, motor oils, methods for analyzing contamination

The device for uninterrupted measurement of shaft wearing out by stuffing tightening is offered. The device for investigating sealing tightenings is worked out. Opticoelectronic systems are used for increasing the accuracy of measuring and for the purpose of uninterrupted monitoring in the construction of both devices.

Keywords: tribomonitoring, machines and mechanisms, optoelectronics, wear, seals

A design of the actuator, consisting of a thin layers of silicon dioxide and aluminum is proposed. There are calculations made of the response speed and heat dissipation of the actuator. By making the best selection of layer thicknesses and optimization stages of technological process, in particular the deep selective etching of silicon, the best performance on the angle of inclination of the actuator and the speed of the device could be achived. The greater the difference between the initial temperature and the heating temperature, the stronger the beam of the actuator is lowered to the plane of the silicon plate, and, therefore, less angle of elevation above the surface of the silicon plate. It is thus possible to control the angle of the beam by selecting the appropriate heater and voltage, providing the desired temperature. The design of the micromirror device based on the proposed actuator is provided. The developed design is based on the actuator and allows for controling the tilt of the mirror in a wide range.

Keywords: silicon, termoactuator, micromechanical systems, bimorph structure, micromirrors

Information about authors of issue №1 (2007)

Keywords: authors