Pneumatic two-stroke engine as an alternative power source

• Autorzy: Mitianiec W. , Wiatrak W.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the possibility of use of the pneumatic piston engine with two-stroke cycle of the work as an alternative drive source or additional power for the battery regeneration in the electric vehicles. The energy for the engine work is taken from the energy of the air stored at high pressure (about 30 MPa) in the bottle. The pressure in the bottle is reduced to smaller value and the air is injected to the cylinder at short time when piston is in TDC position by the pneumatic injector. The engine has not the transfer ports and its torque depends on the air pressure, injection timing and engine speed. The two-stroke cycle work enables better efficiency and specific air consumption than that with a four-stroke cycle of the work. The pneumatic engine of small dimensions, however with high power fulfil the regulations of the environmental protection with zero emission. The paper presents the mathematical model of the engine based on thermodynamic processes (mass and energy balance). On such considerations the computer program was written by the author for the determination of the most important factors. The results of the calculations are included in the graphs showing the influence of the control parameters (air pressure, injection timing and flow area of the injector on the engine working parameters.

Słowa kluczowe

EN

transport; simulation; combustion engines; environmental protection

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2008
• Tom: Vol. 15, No. 3
• Strony: 357--366
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Mitianiec W.

autor

Wiatrak W.

• Cracow University of Technology Al. Jana Pawla II37, 31-864 Krakow, Poland tel: [phone]; Fax: [phone],

Bibliografia

• [1] Annand, W. J., Heat Transfer in the Cylinders of Reciprocating Internal Combustion Engines, Proc. I. Mech. E., Vol. 177, 1963.
• [2] Blair, G. P., Design and Simulation of Two-Stroke Engines, SAE 1996.
• [3] Chen, CH.,Veshagh A., A Comparison Between Alternative Methods for Gas Flow and Performance Prediction of Internal Combustion Engines, SAE Pap., 921734, 1992.
• [4] Franco, A., Stan C., Eichert H., Numerical Analysis of the Performances of a Small Two - Stroke Engine with Direct Injection, SAE Paper 960362, SAE International Congress & Exposition, Detroit 1996.
• [5] Heywood, J. B., Internal Combustion Engine Fundamentals, McGraw, Hill 1988.
• [6] Lavy, J., Angelberger, C., Towards a Better Understanding of Controlled Auto-Ignition (CAI0 Combustion Process From 2-Stroke Engine Results Analyses, SAE Paper 2001 01 1859/4276, 2001.
• [7] Look, D. C., Sauer, H. J., Engineering Thermodynamics, PWS Engineering, Boston 1986.
• [8] Mitianiec, W., Jaroszewski, A., Mathematical models of physical processes in combustion engines of small power, Ossolineum, Wroclaw, Warsaw, Cracow 1993.
• [9] Onishi, S., Hong, Jo S., Do Jo, S., Kato, S., Active Thermo-Atmosphere Combustion (A.T.A.C.) - A New combustion Process for Internal Combustion Engines, SAE Paper 790501, 1979.
• [10] Vargafeik, N. B., Tables on the Thermophysical Properties of Liquids and Gases, Halstead Press, New York 1975.