Title: Combustion simulation of a 1.9 L turbo-charged diesel engine with detailed chemical kinetics model

Authors: Jun Xin; Ning Ding; Ming Chen; Zheng Xu

Addresses: SAIC Motor Passenger Vehicle Co., No. 201 Anyan Rd. Jiading, Shanghai, China ' SAIC Motor Passenger Vehicle Co., No. 201 Anyan Rd. Jiading, Shanghai, China ' SAIC Motor Passenger Vehicle Co., No. 201 Anyan Rd. Jiading, Shanghai, China ' SAIC Motor Passenger Vehicle Co., No. 201 Anyan Rd. Jiading, Shanghai, China

Abstract: To meet stringent emission and fuel consumption requirements, many auto companies have been developing advanced diesel engines. As a key virtual design verification tool in the loop of engine development, CFD can provide a deep insight into the physical processes in the cylinders. In this paper, combustion simulation of a common rail injection diesel engine is presented. Here different combustion chambers are investigated. The SAGE detailed chemistry kinetics model with multi-zone algorithm is used for the combustion simulation. A bench test of the 1.9 L turbocharged diesel engine was performed to verify the calculation results. The swirl ratio, in-cylinder temperature and heat release rates for different combustion chamber shapes, different engine operation conditions are compared. The evolution of fuel injection, flames and emissions are also studied. The simulation results and test data show good correlation.

Keywords: combustion simulation; chemistry kinetic models; heat release; turbocharged diesel engines; kinetic modelling; vehicle emissions; fuel consumption; CFD; computational fluid dynamics; swirl ratio; in-cylinder temperature; heat release rates; fuel injection; flame evolution; simulation.

DOI: 10.1504/IJPT.2016.081800

International Journal of Powertrains, 2016 Vol.5 No.4, pp.412 - 428

Received: 04 Jun 2015
Accepted: 29 Oct 2015
Published online: 26 Jan 2017 *

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