Temat: seals - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Investigation of blade piston compressor
Autorzy:: Kalina, P.
Wodyński, P.
Irzycki, A.
Snopkiewicz, K.
Powiązania:: https://bibliotekanauki.pl/articles/245549.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: mechanics
compressor
seals
Opis:: The paper presents the results of scientific research of the blade-type piston compressor which were conducted on the test rig built especially for this purpose. The construction concept of the compressor, design calculation of its main elements and tests of contact- and contactless sealing types were discussed in papers published at subsequent KONES-symposia 2009 and 2010. The results shown in present document are focused on studies of compressor having the piston equipped with labyrinth or contact seals. When testing on test bench, the intake air flow to the compressor as well as temperature and pressure of air compressed in the tank of 0.1 m3 were measured. Quick-changing pressure in the compression chamber and air temperature at the compressor's outlet were recorded and analyzed, also. The research was carried out for contact-type seals made of various materials which do not require lubrication and for contactless-type seals (labyrinth). In the course of studies the proper backlash between the piston and the cylinder wall was matched to ensure trouble-free operation of installation. The results of compressor power demand were presented in this article, too. This research work is performed under the framework program "Inicjatywa Technologiczna I" No 12218.
Źródło:: Journal of KONES; 2011, 18, 3; 143-148
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Blade-type piston compressor investigation of seals
Autorzy:: Kalina, P.
Chomczyk, W.
Irzycki, A.
Snopkiewicz, K.
Powiązania:: https://bibliotekanauki.pl/articles/246203.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: piston machines
piston compressor
seals testing
Opis:: The paper presents the test results of selected seals applied in the blade-type piston compressor designed and realized in Propulsion Department of Institute of Aviation according to Patent No 6822 specification. Principle of operation of the compressor and the construction of test stand utilized to the seals testing were presented in the paper published in the Journal of KONES 2009. The special blade-type piston realizes a pendulous movement in the circular cylinder divided into two bulkheads. Each of bulkheads, fitted out with a set of bidirectional operating valves, creates by sequential opening and closing of them two compression chambers for one blade. Comprehensive tests of different kinds of seals were carried out on a single-compression machine driven by pneumatic actuator. The pressure rise vs. blade movement and drop of pressure when the piston was stayed at top dead centre were measured. The results of leak tightness of other structures of blade-type piston were analyzed as well and are subject to the following paper. The new design of piston relied on fitting-out of piston with side disc was prepared with intention of eliminating the loss of usable pressure in compression chamber, especially in area of top dead centre. The proposed design eliminated the leaks on the drive shaft and lateral seals, but not on the cylindrical surface of disco.
Źródło:: Journal of KONES; 2010, 17, 1; 199-204
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Trajectory of the apex seals of the wankel rotary engine
Autorzy:: Drogosz, P.
Powiązania:: https://bibliotekanauki.pl/articles/242183.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: internal combustion engines
Wankel rotary engines
trochoid
seals
equidistant
Opis:: This article describes the basic principles for determining the trajectory of the apex seals of Wankel rotary engines. An attempt is made as the Wankel engine seems to be the convenient as the burning hydrogen fuel engine. The main advantage is particularly intensive cooling. The main disadvantage is high pollution of combustion gases. Analyzing the working constructions it is possible to find the main sources of pollution. After all it seems that specific work of rotating piston seals are the main reason of usage big volume of lubrication oil. But part of lubrication oil is burnt together with the fuel increasing the pollution. Even using hydrogen as fuel it remains difficult to meet EURO V regulations of combustion gases pollution made by transport vehicles. Every possibility of volume reduction of lubrication oil is important. In the article the trajectories of apex seals are discussed. As the mathematical model of trajectory a special formula of trochoid was chosen. The main advantages of the chosen form of mathematical equation are applications of two main parameters: curve size parameter and dimensionless curve parameter. These two parameters decided about convenience in changing volume of internal combustion engines and comparisons of performance characteristic of different Wankel engines. In other publications connected with Wankel motors more complicated mathematic formulas are still used.
Źródło:: Journal of KONES; 2011, 18, 2; 117-122
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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