This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Comparative Studies on the Idling Performance of a Three Cylinder Passenger Car Engine Fitted with a Carburettor and a Single Point Electronic Gasoline Fuel Injection System
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 01, 1997 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Experimental investigations relating to the performance and emission characteristics under idling conditions of a three cylinder passenger car spark ignition engine operating on a conventional carburettor and a developed single point gasoline fuel injection system are described in this paper.
The idling performance at different engine speeds was studied by carrying out comprehensive engine testing on a test bed in two phases. In the first phase, experiments were conducted on an engine fitted with a conventional carburettor whilst they were extended to the engine provided with a developed electronic single point fuel injection (SPI) system, whose fuel spray was directed against the direction of air flow. The injection timing of the SPI system was varied from 82 deg. before inlet valve opening (or 98 deg. before top dead center) to 42 deg. after inlet valve opening (or 26 deg. after top dead center). An injection timing of 42 deg. before inlet valve opening (or 58 deg. before top dead center) was observed to be optimum.
As compared to the carburettor version, SPI system operation under idling conditions resulted in :-
- 1Lower cylinder to cylinder variation in mixture strength.
- 2Less cyclic variations.
- 3Stable operation under a leaner air fuel ratio.
- 4Improved fuel consumption.
- 5Lower level of carbon monoxide and hydrocarbon emissions.
CitationKhatri, D., Ramesh, A., and Babu, M., "Comparative Studies on the Idling Performance of a Three Cylinder Passenger Car Engine Fitted with a Carburettor and a Single Point Electronic Gasoline Fuel Injection System," SAE Technical Paper 971615, 1997, https://doi.org/10.4271/971615.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
- Nogi, Toshiharu. et all, “Effect of Fuel Supply Method on Fluctuation in Gasoline Engine Idling Speed”, Transaction of Society of Automotive Engineers of Japan, 1987, pp-5-10.
- Nogi, Yoshiharu, “Engine speed Fluctuation During Idling Operation”, 6 th joint symposium on I.C. Engine January 1987, Tokyo Japan.
- Washino et al, “Effect of Manifold Wall Wetting on Idling Stability”, Symposium of SAE Japan, 1987, pp 261-266.
- Sarveti, H. and Yuen W.W., “Deposition of Fuel Droplets in Intake Manifolds and the Behaviour of the Fuel Film Flow on it Walls. SAE paper 840299.
- Kay, I.W., “Manifold Fuel Film Effects in S.I.Engine,” SAE Paper 780944.
- Ishizuka, T., “Improving Operation With Regard to the Warm up Process for SPI Spark Ignition Engine,” Symposium of the Society of Automotive Engineers of Japan.
- Nagaishi, Hatsuo, “Method of Evaluating Wall Wetting in a Real Engine. Symposium of Automotive Engines of Japan, 1987, pp 551-557.
- Daniels, C.H., “The Influence of Mixture Preparation on a Warm 1.9L Ford Engine”, SAE 940444.
- Boyle, R. et.al, “Cold Start Performance of an Automotive Engine Using Prevaporised Gasoline”, SAE Paper 93710.
- Arocomanis, C., Bai, C.S. et al, “Flow and Combustion in a Four Valve S.I. Optical Engine,” SAE 940475.
- Young, M.B., “Cyclic Dispersion Some Quantitative Cause and Effect Relationships,” SAE Paper 800459.
- Kalghatgi Gautam T., “Spark Ignition, Early Flame Development and Cyclic variation in I.C. Engine”, SAE Paper 870163.
- Belmont, M.R., et al, “Statistical Aspects of Cyclic Variability”, SAE Paper 860324.
- Hill, P.G, “Cyclic Variation and turbulence Structure in Spark Ignition Engines”, Combustion and Flame, 72, pp73-89, 1989.
- Ozdor Nir, et al, “Cyclic Variability in S.I.Engine A Literature Survey”, SAE Paper 940987.