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A simulation study on the effect of inlet valve opening on performance of high speed engines

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conference contribution
posted on 20.08.2014 by Dimitar Nouhov, Rui Chen
Variable camshaft phasing (VCP) system is a potential valvetrain technology for high speed engine applications since it does not increase the effective valve dynamic mass, which is essential to high speed operation. In addition, it is a relatively simple and low cost system. Inlet Valve Opening (IVO) is the start of valve overlap. It has significant effect on engine breathing. As part of a general assessment on the VCP system, such an effect was calculated and analysed using a zero- and one- dimensional based commercial engine simulation package, Lotus Engineering Simulation (LES) and reported in this paper. The simulation was based on a 0.6l, 4-cylinder, 4-stroke, high speed (up to 13500rpm), production spark ignition engine. It was found that IVO can either improve the utilisation of inlet charging effect or reduce backflow during the valve overlap period caused by speed related wave effects from the exhaust manifold.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

Proceedings of the 17th Internal Combustion Engine Symposium Proceedings of the 17th Internal Combustion Engine Symposium

Pages

149 - 152

Citation

NOUHOV, D. and CHEN, R., 2002. A simulation study on the effect of inlet valve opening on performance of high speed engines. In: Proceedings of 2002 17th JSAE Internal Combustion Engine Symposium, Tokyo, Japan, pp. 149-152.

Publisher

© Society of Automotive Engineers of Japan

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2002

Book series

JSAE Paper;20026076

Language

en

Location

Tokyo, Japan

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