This paper provides a detailed analysis of the tests performed with spark ignition engine zonal cooling. Zonal cooling principle assumes two circuits, one for cylinder head and block continuous adjustment temperature in accordance working principle. In order to test proposed solution, it was necessary create functional model thermal regime, an aspect that led redesign some subassemblies parts r...

Due to special working conditions, diesel engines often need run stably for a long time at high power operating conditions. As the core of engine moving parts, piston needs be exposed temperature time. Based on problem excessive maximum point certain type engine, this paper discussed protective effect using different thicknesses Mullite thermal barrier coating top surface piston, by method hard...

The study of the possibility using silicate abrasive paste to increase durability car parts is considered on example "valve-seat" connection gas distribution mechanism internal combustion engine. service life mainly determined by wear its links, therefore, durability, it necessary ensure high resistance (valve and seat). As a result tear parts, technical economic indicators engine deteriorate. ...

The aim of this work is to highlight theoretically and experimentally the effect of cyclic speed fluctuations on the temporal and angular deterministic parts of signals recorded on rotating machines operating in steady state conditions. The deterministic parts of such cyclostationary signals are defined by their periodic components, or their CS1 part (order 1 of cyclostationarity). It can be as...