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Wyszukujesz frazę "Beroun, S." wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Spark plug with the increased energy for creating of initial combustion centre
Autorzy:
Blażek, J.
Beroun, S.
Powiązania:
https://bibliotekanauki.pl/articles/248137.pdf
Data publikacji:
2008
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
Ignition of mixture
Variability of working cycles
spark plug
Ignition chamber
Opis:
Variability of the working cycle of the internal combustion engines with the combustion of homogenous mixture is a long-term problem of SI engines. The paper shows a decrease of cycle variability and an increase of the engine efficiency by using a spark plug, whose design allows the ignition of the mixture in the same way as using a classical spark plug by the high-voltage discharge between electrodes of the spark plug and at the same time increases the energy for the development of mixture combustion in the initial phase by a flame jet from a very small ignition chamber. Energy of flame jet for the mixture ignition into compression volume at engine cylinder is fully 100 times higher to energy of high-voltage discharge on the spark plug. The laboratory results of experimental works on vehicle SI engine (the visual inspection of initial phase of burning, course of cylinder pressure, engine power data) are showed. On basis performed tests has been projected the new design of the spark plug with the integrated combustion chamber. According to our engineering design was made the new spark plug with the ignition chamber like functional samples in company BRISK. Proving test with this new spark plug was performed on two different test engines at Department research laboratory on Technical University of Liberec. The experiments confirm the await results: the engine characteristics has been significantly improved. New design of spark plug with integrated chamber it was registered at Bureau of industrial ownership at Prague.
Źródło:
Journal of KONES; 2008, 15, 3; 29-35
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement of mechanical losses in the combustion engines
Autorzy:
Drab, O.
Voženilek, R.
Beroun, S.
Powiązania:
https://bibliotekanauki.pl/articles/243939.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engine
measurement of mechanical losses
Opis:
The development of a new combustion engines is connected with endeavour for escalation of the total efficiency. Escalation of the total efficiency can be: minimization of the mechanical losses in the combustion engines or minimization of the unsuitable equipment capacity of accessories. Now research and development programs of a manufacturer of the combustion engines search effectual equipment and method for this escalation of the total efficiency. The escalation of the total efficiency is important for a minimization fuel consumption and consequently for lower emissions. Turn of the combustion engines is used method for measurement of mechanical losses very often. The paper will show choice of the measurement results on the testing bench. The Technical University of Liberec, Department of Vehicles and Engines, has developed a design of a testing bench which would enable the measuring mechanical losses of the combustion engines for different temperatures of cooling water and engine lubrication oil. Each medium (lubrication oil and cooling water) have own circle with automatic temperature regulation. The testing bench has automatic system for change revolution and automatic system for measurement: torque, revolution, temperatures and pressures. The asynchronous motor (company SIEI, type MA 133 K - 62 with power 28 kWI 6000 l/min) is used for drive of combustion engine in the testing bench.
Źródło:
Journal of KONES; 2010, 17, 3; 63-67
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automotive SI engine with injection of the liquid LPG into the inlet manifold
Autorzy:
Mareš, J.
Beroun, S.
Blažek, J.
Holubec, R.
Powiązania:
https://bibliotekanauki.pl/articles/246436.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
gas fuel
mixture forming
power reducing
injection of liquid LPG
fuel vaporization
exhaust emission
Opis:
Non supercharged SI engine on LPG with mixture forming by evaporated LPG has lower power by about 8% compared to original petrol engine. This disadvantage can be eliminated by mixture forming by injection of liquid LPG. Report shows the results of the laboratory experimental research on an engine with injection of liquid LPG with the detailed analyses of the energy, power and emission engine parameters in 2 variations of the engine set-up. The thermodynamic analysis of the indicator diagram has shown that the characteristic parameters of the cycle (incl. Parameters of the combustion course) stand practically identical for operation on petrol and on LPG. The measurements on the engine were also oriented on study of conditions in the inlet manifold after injection of the liquid LPG (injection visualization with fuel vaporization, temperature in the intake port) for an explanation of any abnormality on course of the unburned hydrocarbon concentration before catalyst. The experimental results show that automotive engine with injection of liquid LPG like high-quality variation of the car drive with favorable operating economy and positive ecological effects for environment.
Źródło:
Journal of KONES; 2007, 14, 3; 385-394
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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