Operation of exhaust systems of turbocharged diesel engines identified by means of exergy analysis

被引：8

作者：

Fijalkowski, S ^{[1
]}

Nakonieczny, K ^{[1
]}

机构：

[1] Tech Univ Lublin, Dept Tech Thermodynam, PL-20618 Lublin, Poland

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING | 1997年 / 211卷 / 05期

关键词：

turbocharged engine; exhaust system; exergy analysis;

D O I：

10.1243/0954407971526524

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A method and results of the analysis of exergy losses that occur in the exhaust system of a turbocharged diesel engine are presented. The aim of the work was to distinguish nodes in the system where exergy losses arise and make precise assessment of losses generated there. Losses were found to be attributable to three main sources: high velocity flow of viscous gas through variable geometry ducts; irreversibility of thermodynamic processes; and heat exchange through the walls of the exhaust system. The adopted model of generating exergy losses has made it possible to carry out a computer simulation for an exemplary turbocharged engine. The results are illustrated in diagrams and discussed.

引用

页码：391 / 406

页数：16

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