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GDI Compact Four Stroke Engine - an Advanced Concept for Vehicle Application
Technical Paper
2004-01-0039
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The development trends of advanced automobile engines towards high power-to-volume and power-to-mass ratios are partially in contradiction with the requirements regarding drastically reduced fuel consumption and pollutant emission. The development way of the engine between customer acceptance and limitations by law is mainly determined by the optimization of scavenging, mixture formation and combustion characteristics, as functional base for the engine design.
The paper presents a new direct injection concept and its optimization correlated with the scavenging process. The process simulation - as a base for the engine development - was carried out using concomitantly two CFD codes - FIRE and VECTIS. The main optimization parameters were the combustion chamber design, the injector location, the spray characteristics, the spark location, the injection timing and duration. This paper is polarized on the analysis of the results using the CFD code VECTIS and on the comparison of both methods.
A main part of the paper is dedicated to the compared engine and vehicle tests using different parameter combinations, as a concrete result of the simulation strategy.
The GDI configuration is compared with previous GDI concepts in base of experimental analysis at the engine test bench, at the vehicle test bench during ECE test cycles, as well as on road.
The results regarding the power-to-volume ratio, the specific fuel consumption, the pollutant emission as well as the acceleration behavior represent a reference for advanced compact engines.
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Authors
- C. Stan - West Saxon University of Zwickau
- A. Stanciu - West Saxon University of Zwickau
- R. Troeger - West Saxon University of Zwickau
- D. Mueller - West Saxon University of Zwickau
- L. Martorano - Università degli Studi di Pisa
- M. Antonelli - Università degli Studi di Pisa
- C. Tarantino - Università degli Studi di Pisa
- R. Lensi - Università degli Studi di Pisa
Topic
Citation
Stan, C., Stanciu, A., Troeger, R., Mueller, D. et al., "GDI Compact Four Stroke Engine - an Advanced Concept for Vehicle Application," SAE Technical Paper 2004-01-0039, 2004, https://doi.org/10.4271/2004-01-0039.Also In
References
- Stan, C. Direct Injection Systems, The Next Decade in Engine Technology SAE International 2003 0-7680-1070-5
- Stan, C Troeger, R. Stanciu. A. Correlation Concept between Mixture Formation and Ignition Applied to a GDI High Speed Engine SAE Paper 2002-01-0833
- Stan, C. Stanciu, A. Troeger. R Martorano, L. Tarantino, C. Antonelli, M. Lensi, R. Direct Injection Concept as a Support of Engine Down-Sizing SAE Paper 2003-01-0541
- Stan, C. Stanciu, A. Guenther, S. Martorano, L. Tarantino, C. Antonelli, M. Direct Injection Application on a Four-Stroke Motorcycle Engine SAE Paper 2001-01-1818/4238 , SETC - Small Engine Technology Conference & Exhibition 28/30 November 2001 Pisa, Italy
- Stan, C. Stanciu, A. Troeger, R. Martorano, L. Tarantino, C. Antonelli, M. Lensi, R. Influence of Mixture Formation on Injection and Combustion Characteristics in a Compact GDI Engine, Paper SAE 2002-01-0997
- VECTIS release 3.5 Ricardo Software Illinois, USA 2001
- FIRE release 8.2 AVL List GmbH Austria
- Patterson, M., A. Reitz, R., D. Modeling the Effects of Fuel Spray Characteristics on Diesel Engine Combustion and Emissions SAE Paper 980131 1998
- Stan, C. Stanciu, A. Troeger, R. Lanzafame, R. Testa, M. Polizzi, G. Theoretical and experimental analysis of the spray characteristics of a GDI system SAE Paper 04ANNUAL-658
- BOOST release 3.1 AVL List GmbH Austria
- AMESim release 4.1 Imagine SA Rouane, France
- Stan, C. Stanciu, A. Troeger, R. Martorano, L. Tarantino, C. Antonelli, M. GDI Four Stroke SI Engine for Two Wheelers and Small Vehicle Applications Small Engine Technology Conference and Exposition Kyoto, Japan October 29-31 2002