Title

A Mean-Value Model Of Internal Combustion Engine Based On Variable Valve Phase Timing

Keywords

Gas exchange dynamics; Mean-value model; Variable valve phase angle; Volumetric efficiency

Abstract

A simplified Mean-Value Model (MVM) is developed to represent spark ignition engine functions. The model is based on variable valve phase angle over a wide range of operating conditions. Gas exchange dynamics is simulated to determine the mass air flow into the cylinder. This flow is altered by variable valve phase mechanism. In this paper, phasing the exhaust and intake valves is considered equally (dual equal) and is equipped with hydraulics Continuous Variable Valve Timing (CVVT) mechanism. The model developed reflects these modifications and uses gas exchange dynamics to capture valve phase, manifold pressure, and engine rotating speed. The values of flow rates from this simplified mathematical model is compared and validated with engine-dynamometer experimental data. The results show strong agreement in a wide range of operating points while the variation of phase angle is limited to nominal values. Copyright © 2012 by ASME.

Publication Date

12-1-2012

Publication Title

ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)

Volume

11

Number of Pages

55-60

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1115/IMECE2012-87716

Socpus ID

84887269155 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84887269155

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