Autor: Sendyka, B. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Simulation of the fuel stream injection in wall guided in spark ignition engine
Autorzy:: Sendyka, B.
Kudzia, S.
Wachulec, W.
Powiązania:: https://bibliotekanauki.pl/articles/245362.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
road transport
simulation
combustion engines
direct injection
Opis:: Wall guided direct injection system is one of the most frequently met in modern car gasoline direct injection engines. In technical solutions where gravitational fuel charge movement occurs, concave piston head needs to be extended with specially shaped ascent. This additional surface guide's injected fuel stream in area of spark plug and forms centrally stratified fuel charge. Injector to cylinder axis inclination angle in wall guided direct injection engines is one of critical parameters which decide of combustion process flow. It determines density of injected fuel stream and air-fuel ratio which has to be less than l in spark plug area. 3D Studio MAX offers advanced module - Particle System - Super Spray which enables to simulate behaviour of injectedfuel spray. These simulation runs resulted in fmding optimal range of injector to cylinder axis inclination angle for the modelled direct injection engine. Results obtained from the simulation confirmed importance of injector to cylinder axis inclination angle as a construction parameter. However injection pressure doesn 't impact fuel stream movement direction, it impacts time after which injected fuel stream reaches spark plug's electrodes. Undesired effect of increasing pressure value is higher fuel stream dissipation what dominates advantageous effect of shortening the time. This can be achieved by decreasing distance between injector and spark plug like in spray guided direct injection engines.
Źródło:: Journal of KONES; 2009, 16, 4; 401-405
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Optical method of registration of process of the injection and the burning in the chamber of the cylinder of the engine GDI
Autorzy:: Sendyka, B.
Noga, M.
Cygnar, M.
Budzik, G.
Powiązania:: https://bibliotekanauki.pl/articles/244831.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engines
injection process
combustion chambers
optical method
Opis:: In this article method of a visualization of a process of injection and burning of the air-fuel mixture was presented in cylinder of engine GDI. Intention of the visualization is a possibility of a determining and a selection how the most profitable parameters of injection for the work of engine during burning of the various load. Apparatus of the firm AVL - VideoScope 513 D was used to performance of positional tests, having on purpose registration of a dislocation of the stream of the fuel from the moment of injection, one by one a reflection of fuel from of the bottom of the piston until for the connection under the spark plug, and next an expansion of the flame from moment of the ignition until to the end of process of burning. Results of carried out visualization are in form files of the type of avi. These files are intended to a presentation of a record of respective frames as a moving image. From editorial reasons in this article, results of visualization are presented in a form of single cinematographic frames following in turn after themselves what the certain degree of the angle of the rotation of the crankshaft. Values of angles for which next frames were presented are placed in a bottom left corner of a single frame. All executed registrations archive images in the function of angle of rotation of crankshaft no from one, but from many of the cycles of the work of engine
Źródło:: Journal of KONES; 2008, 15, 4; 495-500
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Turbocharging of naturally aspirated spark ignition engine without modification of a compression ratio
Autorzy:: Sendyka, B.
Filipczyk, J.
Noga, M.
Kula, M.
Powiązania:: https://bibliotekanauki.pl/articles/246348.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
combustion engines
turbocharging
Opis:: The objective of research was to determine total efficiency and performance of turbocharged small displacement SI engine without modifying engine control unit. The engine used during the investigation was Toyota yaris 1296 cm3 displacement SI engine with modified intake manifold. There was variable and fixed geometry turbocharger mounted in the exhaust system. Inlet air pressure was controlled by introducing a waste gate valve. Specific values of maximum boost pressure were obtained thanks to implementation of different valve springs. The outcome of investigation shows that there is a possibility of introducing turbocharger without modification of intake system and engine's control unit. Implementation of turbocharger with variable turbine geometry and waste gate valve controlling maximum boost pressure permits significant improvement in torque characteristic without exceeding permissible harmful exhaust gases emissions. Change of waste gate valve spring's characteristic allowed reaching higher torque and making its value constant in wide range of engine's rotational speed. Change of waste gate characteristic permitted to achieve advantageous torque characteristic, maximum torque rise and its constant value in wide range of engine's speed.
Źródło:: Journal of KONES; 2007, 14, 3; 557-561
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Comparative study of charging system of spark ignition engine
Autorzy:: Sendyka, B.
Filipczyk, J.
Noga, M.
Rodak, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/246350.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
combustion engines
charging system
Opis:: The purpose of investigation was comparison of engine's output while equipped with different types of turbocharging systems. Engine used during research was Toyota's SI engine with displacement of 1296 cm3. Intake and exhaust manifold were modified by introducing fixed and variable geometry turbocharger. The third system was electrically driven charger ensuring both constant and variable boost pressure. Regulatory parameters of fuel injection and ignition system weren't changed. On the basis of carried out research , it was affirmed that there is a possibility of introducing charging system into the engine without changes of mentioned regulatory parameters. Proper choice concerning charging systems allows improving torque characteristic in wide range of engine's rotational speed. Electrically driven charger giving maximum boost pressure provides significant improvement in low engine's speed range, whereas in higher range it is not showing so much advantage. In medium engine's speed range the best result is given by variable geometry turbocharging system. In this application boost pressure had to be reduced to 0.25105 [Pa] in order to provide stable engine's run in all conditions including variable engine's speed and whole range of throttle opening angle.
Źródło:: Journal of KONES; 2007, 14, 3; 551-555
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Total efficiency of adjustable compression ratio SI engine
Autorzy:: Sendyka, B.
Kula, K.
Kudzia, S.
Soczowka, J.
Powiązania:: https://bibliotekanauki.pl/articles/242772.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: SI engine
compression ratio
combustion engines
total efficiency
Opis:: The following paper includes adjustable ratio spark ignition engine's total efficiency analysis. Main modification of the engine is mounting of crankshaft on eccentric mechanism. Paper presents schemes of eccentric mechanism implemented in developed engine as well as adjustable compression ratio control system's block diagram. Propulsion from stepper motor is transmitted through self-locking worm gear. Value of compression ratio varies from 9.5 to 14. The main input signal for electronic control system is coming from knock-sensor mounted on the engine. If control system doesn't receive that signal it levels up compression ratio. As soon as signal appears ratio mentioned above is reduced by a value 0.05. During the investigation rotational speed of the engine was limited to nterval 1800-4000 [rpm] and throttle was partially closed. Relative increase of Suzuki engine's total efficiency presented in this paper surpasses 30 per cent. The outcome of investigation presents engine with variable compression ratio as a good prospect for the future. Constant adjustment of compression ratio with use of electronical control system allows significant improvement of total efficiency and consequently reducing fuel consumption.
Źródło:: Journal of KONES; 2007, 14, 4; 401-407
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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