This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Mixture Preparation Optimization by CFD of a Flex-Vehicle (Gasoline/Ethanol) Intake System Layout
ISSN: 0148-7191, e-ISSN: 2688-3627
Published November 16, 2004 by SAE International in United States
Annotation ability available
The paper describes the optimization to match the Brazilian market requirements for a Flex-Vehicle of the intake system and in particular the fuel injectors of a small displacement (1.6 l) 8 valves passenger car engine. The imposed target was to find a compromise for the hardware components related to the mixture preparation process, which optimize their performance with respect to a gasoline with a random content (from 0 to 100 %) of ethanol.
The analytical optimization process is performed by use of a 3-D numerical virtual engine in which can be studied the physical phenomena of spray atomization, vaporization and momentum fluctuations from different injector atomizer layouts.
The different atomizer layouts as well as several vaporization enhancement approaches are rated with respect to a baseline configuration on the virtual engine. The paper presents the results obtained by highest rated solutions, which were manufactured as prototypes and tested on the real engine.
CitationPontoppidan, M., Bonfiglioli, S., Damasceno, F., and Montanari, G., "Mixture Preparation Optimization by CFD of a Flex-Vehicle (Gasoline/Ethanol) Intake System Layout," SAE Technical Paper 2004-01-3313, 2004, https://doi.org/10.4271/2004-01-3313.
- The European Requirement.” Proceedings from Engine and Environment Graz September 1997
- Grebe U. Gebhard P. Lôhnert T Opacak I Theis H. G. 539 34 59 2003
- Pontoppidan M. Bella G. Rocco V. “Mixture formation in SI-Engine intake Systems - A simplified theoretical Model with Experimental Verification.” ASME 1996 Spring Congress
- Pontoppidan M Gaviani G. Bella G. Rocco V. “Direct Fuel Injection - A Study of Injector Requirements for Different Mixture Preparation Concepts” SAE Paper 970628
- Pontoppidan M Gaviani G. Bella G. Rocco V. “Improvements of GDI-Injector Optimization Tools for Enhanced SI-Engine Combustion Chamber Layout.” SAE Paper 980494
- Pontoppidan M Gaviani G. Bella G. Rocco V. “Experimental and Numerical Approach to Injection and Ignition Optimization of Lean GDI-Combustion Behavior.” SAE Paper 1999-01-0173
- Pontoppidan Pontoppidan M Di Maio A. Bella G. Rocco V. “Enhanced use of 3-D CFD and Combustion Simulation to Optimize the Development of ECU-Control Algorithms for GDI Spark Ignited Engines.” ICE 99 - Proceedings
- Pontoppidan M. Gaviani G. Bella G. Rocco V. “Enhanced Mixture Preparation Approach for Lean Stratified SI-Combustion by a Combined Use of GDI and Electronically Controlled Valve-Timing.” SAE Paper 2000-01-0532
- Pontoppidan M Gaviani G. Bella G. Demaio A. “Study of the Benefits and Inconveniences of a Substantial Increase of the Available Rail-Pressure in GDI-Injector Assemblies” SAE paper 2002-01-1132
- Pontoppidan M. “Combined use of 3D-CFD Simulation and direct Visualization Techniques to decrease the Optimization Procedure Complexity of Combustion chamber Layout and Engine Control Pre-mapping operation necessary for Online Engine Test rig Optimization.” 2002 137 147
- Pontoppidan M. Gaviani G. Bella G. Demaio A. “Direct Injection for Future SI-Engines - Stand Alone Combustion Layout or Integrated Part of Multi-Function Fuel/Air Management Approach?” SAE paper 2003-01-0540
- Pontoppidan M. Gaviani G. Bella G. Demaio A. “Optimization by CFD simulation of Spray formation Parameters to adapt Direct Injection high-pressure Fuel injectors to high-speed SI-engines.” SAE paper 2004-01-0539