Abstract
A two-stroke Schnurle-type gasoline engine was modified to enable compression-ignition in both the port fuel injection and the in-cylinder direct injection. Using the engine, examinations of compression-ignition operation and engine performance tests were carried out. The amount of the residual gas and the in-cylinder mixture conditions were controlled by varying the valve angle rate of the exhaust valve (VAR) and the injection timing for direct injection conditions. It was found that the direct injection system is superior to the port injection system in terms of exhaust gas emissions and thermal efficiency, and that almost the same operational region of compression-ignition at medium speeds and loads was attained. Some interesting combustion characteristics, such as a shorter combustion period in higher engine speed conditions, and factors for the onset of compression-ignition were also examined.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Agrawal, D. D., Sharma, S. P., Gupta, C. P., 1975, “The Calculation of Temperature and Pressure of Flame Gases Following Constant Volume Combustion,”Journal of the institute of fuel, No. 104, pp. 104–111.
Iida, N., 1999, “A Study of Autoignition and Combustion in Two-Stroke ATAC Engine-Compression Ignition Characteristics of Low Carbon Alternative Fuels,”SAE Paper 1999-01-3274.
Ishibashi, Y., 2000, “Basic Understanding of Activated Radical Combustion and its Two-Stroke Engine Application and Benefits,”SAE Paper 2000-01-1836.
Ishibashi, Y., Asai, M., 1998, “A Low Pressure Pneumatic Direct Injection Two-Stroke Engine by Activated Radical Combustion Concept,”SAE Paper 980757.
Kaneko, M., Morikawa, K., Itoh, J., Saishu, Y., 2001, “Study on Homogeneous Charge Compression Ignition Gasoline Engine — Second Report,” (in Japanese)JSAE Annual Congress 20015191.
Moriyoshi, Y., Mori, K., Morikawa, K., 1999, “Numerical Analysis of Gas Exchange Process in a Small Two-Stroke Gasoline Engine,”SAE Paper 1999-01-3330.
Onishi, S., Jo, S. H., Shoda, K., Jo, P. D., Kato, S., 1979, “Active Thermo-Atmosphere Combustion (ATAC) — A New Combustion Process for Internal Combustion Engines,”SAE Paper 790501.
Tomituka, K., 1985,Two-Stroke Engine (in Japanese), Yokendo, Tokyo, pp. 86.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kim, S.W., Moriyoshi, Y. Analysis of compression ignition combustion in a schnurle-type gasoline engine comparison of performance between direct injection and port injection systems-. KSME International Journal 18, 1451–1460 (2004). https://doi.org/10.1007/BF02984258
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02984258