MATHEMATICAL MODEL OF COMBINED PARAMETRICAL ANALYSIS OF IN INDICATOR PROCESS AND THERMAL LOADING ON THE DIESEL ENGINE PISTON

Sergejus Lebedevas,Galina Lebedeva

doi:10.3846/16484142.2004.9637962

Abstract

In the publication the methodical aspects of a mathematical model of the combined parametrical analysis of an indicator process and thermal loading on the diesel engine piston have been considered. A thermodynamic model of a diesel engine cycle is developed. The executed development is intended for use during researches and on the initial stages of design work. Its realization for high revolution diesel engines of perspective type CHN15/15 allowed to choose rational variants for the organization of an indicator process and to prove power ranges of application for not cooled and created cooled oil welded pistons.

Highlights

The advanced manufacturers of pistons from easy silicon-aluminium alloys (Kolbenschmidt, Mahle etc.) make efforts on the expansion of power ranges of piston application («GalleriKS@», «.ibreKS@» models and etc.)
The firms realize selective constructive registration and technological consolidation of pistons depending on the level of power, the purpose of diesel engines, and necessary financial and material investments in the organization of their serial manufacture [1, 2]. .or practical realization of such approach it is essentially important to provide the nominate power ranges of application of pistons of various design schemes
It is realized by the development of the combined parametrical analysis of an indicator process, thermal loadings perceived by the piston and limited criteria of thermal stress of the piston

Summary

Introduction

The advanced manufacturers of pistons from easy silicon-aluminium alloys (Kolbenschmidt, Mahle etc.) make efforts on the expansion of power ranges of piston application («GalleriKS@», «.ibreKS@» models and etc.). It is characteristic that the recommended power ranges of application of pistons of the similar design schemes are widely used. Their range is rather essentially blocked for various types of pistons. This circumstance is treated as a result of the influence of features of an indicator process of a diesel engine. In the executed work such methodical approach is accepted as a basis It is realized by the development of the combined parametrical analysis of an indicator process, thermal loadings perceived by the piston and limited criteria of thermal stress of the piston. The application of development is focused on the stages of design work and outline designing and on the perfection of parameters of maintained park of diesel engines

Methodical aspects of a model of the combined parametrical analysis

Thermodynamic model of a cycle of high revolution diesel engine

Parameters of an indicator process and thermal loading on the piston

Findings

Conclusions