Intake Flow Predictions of a Transparent DI Diesel Engine

Paper #:
  • 981020

Published:
  • 1998-02-23
Citation:
Chen, A., Veshagh, A., and Wallace, S., "Intake Flow Predictions of a Transparent DI Diesel Engine," SAE Technical Paper 981020, 1998, https://doi.org/10.4271/981020.
Pages:
14
Abstract:
This work was carried out as part of the European project IDEA EFFECT. The aim of this research was application of a commercial computational fluid dynamic (CFD) package STAR-CD to real engine flow. The Volkswagen (VW) two-valve transparent 1.9 l direct injection (DI) diesel engine was used to simulate flow field in the inlet port and combustion chamber under engine speeds of 1000 rpm and 2000 rpm. The CFD predictions were verified by Laser-Doppler anemometer (LDA) measurements under motored condition during three periods: valve opening, valve closure and the maximum valve lift.This paper discusses the predicted flow structure and its main features under different engine speeds, and examines the validity and accuracy of the CFD predictions in comparison with measured data.
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