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Direct Injection Application on a Four-Stroke Motorcycle Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published December 01, 2001 by SAE International in United States
Annotation ability available
The potential of direct injection in spark-ignition engines regarding the significant reduction of fuel consumption and pollutant emission as well as advantages in the field of torque characteristic and acceleration behavior induced a remarkable development of GDI engines for automobile applications. The mentioned advantages are of special interest for motorcycle four-stroke engines as well. However, in compact cylinder units, respectively in a wide speed range as for motorcycle engines, the adaptation of direct injection gains on complexity.
The paper presents the development results of a GDI four-stroke four-valve single cylinder motorcycle engine with 125 cc. The pressure pulse direct injection system developed for this application is presented from the fluid-dynamic behavior up to the obtained injection spray characteristics.
The mixture formation process is analyzed for different load and speed values, respectively for favorable combinations of parameters such as the injector location, the opening pressure and the injection start, using a numerical simulation method.
The results of the engine tests confirm the adaptability of this concept for motorcycle engine applications.
- C. Stan - West Saxon University of Zwickau, Germany
- A. Stanciu - West Saxon University of Zwickau, Germany
- S. Guenther - West Saxon University of Zwickau, Germany
- L. Martorano - Universitä degli Studi di Pisa, Italy
- C. Tarantino - Universitä degli Studi di Pisa, Italy
- M. Antonelli - Universitä degli Studi di Pisa, Italy
CitationStan, C., Stanciu, A., Guenther, S., Martorano, L. et al., "Direct Injection Application on a Four-Stroke Motorcycle Engine," SAE Technical Paper 2001-01-1818, 2001, https://doi.org/10.4271/2001-01-1818.
- Stan, C. Direct Injection Systems for Spark Ignition and Compression Ignition Engines SAE 2000 0-7680-0610-4
- Stan, C. Experimental Analysis of the Fuel Spray Characteristics for DI High Speed Engines Using a Ram Tuned Injection System SAE Paper 972742
- Kampmann, S. Moser, W. “Gasoline Direct Injection - a Challenge for Advanced Engine Control Systems MTZ 58 1997 Germany
- Stan, C. Personnaz; J. Car Hybrid Propulsion Strategy Using an Ultra Light GDI Two-Stroke Engine SAE Paper 1999-01-2940
- Stan, C. Lefebvre, J.L. Development of a Direct Injection Concept for Two Wheelers Equipped with Two Stroke Engines SAE Paper 1999-01-1248
- Stan, C. Lebrun, M. Concept of interactive development of a GDI system with high-pressure modulation SAE Paper 2000-01-1042
- Stan, C. Guenther, S. Martorano, L. Tarantino, C. Aspects of Mixture Formation and Combustion in GDI Engines SAE Paper 2000-01-0648
- Grimaldi, C. N. Postrioti, L. Stan, C. Tröger, R. Analysis Method for the Spray Characteristics of a GDI System with High Pressure Modulation SAE Paper 2000-01-1043
- Lebrun, M. Richards, C.W. How to create good models without writing a single line of code International Fluid Power Congress SICFP97 28-29 May 1997 Linköping, Sweden
- AMESim manual, Société IMAGINE 5 rue Brison, 42300 Roanne, France
- Stan, C. Troeger, R. Guenther, S. Stanciu, A. Martorano, L. Tarantino, C. Lensi, R. Internal Mixture Formation and Combustion - from Gasoline to Ethanol SAE Paper 2001-01-1207
- Stan, C. Troeger, R. Grimaldi, C.N. Postrioti, L. Direct Injection of Variable Gasoline/Methanol Mixtures: Injection and Spray Characteristics SAE Paper 2001-01-0966