Proceedings of the 2015 Asia-Pacific Energy Equipment Engineering Research Conference

VNT and EGR Technologies for a Turbocharged Diesel Engine

Authors
Junhua Wu, Fushan Zuo, Yonghui Zhang
Corresponding Author
Junhua Wu
Available Online June 2015.
DOI
10.2991/ap3er-15.2015.4How to use a DOI?
Keywords
Variable nozzle turbine; Turbocharger; Emissions, EGR
Abstract

In this study an experimental investigation was carried out on a turbocharger with variable nozzle turbine (VNT) and exhaust gas recirculation (EGR) system reducing emissions of a direct injection diesel engine. In the EGR system, the exhaust gas was tapped off before the turbine, cooled, and mixed with the intake air after the compressor. A positive pressure difference across the EGR circuit was set up by using a VNT turbocharger, a venturi pipe positioned in the intake manifold such as to provide extra suction power to the EGR gases. The emissions behavior and efficiency with the EGR system were tested in a number of engine working points. The results indicated that the engine could achieve a perfect performance in all speed range with applying of the turbocharger with VNT. The torque was improved greatly at any speed, especially at low speeds; The fuel consumption was improved too; The nitric oxides (NOX) emissions was reduced by large scale by EGR system. With using VNT and venturi pipe, the EGR area and the maximum EGR rate could be enlarged, the NOX emissions was reduced to lower level.

Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

Volume Title
Proceedings of the 2015 Asia-Pacific Energy Equipment Engineering Research Conference
Series
Advances in Engineering Research
Publication Date
June 2015
ISBN
10.2991/ap3er-15.2015.4
ISSN
2352-5401
DOI
10.2991/ap3er-15.2015.4How to use a DOI?
Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Junhua Wu
AU  - Fushan Zuo
AU  - Yonghui Zhang
PY  - 2015/06
DA  - 2015/06
TI  - VNT and EGR Technologies for a Turbocharged Diesel Engine
BT  - Proceedings of the 2015 Asia-Pacific Energy Equipment Engineering Research Conference
PB  - Atlantis Press
SP  - 13
EP  - 18
SN  - 2352-5401
UR  - https://doi.org/10.2991/ap3er-15.2015.4
DO  - 10.2991/ap3er-15.2015.4
ID  - Wu2015/06
ER  -