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Wyszukujesz frazę "hypocycloid" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Idea of use of hydraulic booster in high-pressure fuel pump with hypocycloid drive
Autorzy:
Bor, M.
Borowczyk, T.
Idzior, M.
Karpiuk, W.
Smolec, R.
Powiązania:
https://bibliotekanauki.pl/articles/246849.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
high-pressure fuel pump
hypocycloid drive
hydraulic booster
common rail
simulation
combustion engines
Opis:
Common rail (CR) injection systems have been universally applied in passenger car engines for twenty years. Moreover, they are applied on a wide scale in trucks, machinery and stationary engines. They have many advantages such as very good fuel spraying due to high injection pressure, injection dose distribution to several smaller, or less heat generation compared to traditional systems. At the same time, the use of this type of system involves a number of problems. They are characterized, among other things, by the high cost of manufacturing and the high sensitivity to changes in the quality of the used fuel. The most important component of the common rail injection system is the high-pressure injection pump. The authors propose a new, alternative pump design with the hypocycloid drive – the article presents the issue of using this type of pump. Further sections describe the design of a pump utilizing a hypocycloid mechanism; demonstrate beneficial functional features and present selected results of the assembly's dynamic simulation. The pump is also characterized by the possibility of multiplying the piston's pitch while maintaining its diameter. It makes it possible to obtain much greater discharge per operating cycle. Taking into account the considerable quantity of fuel transferring by the pump, was also possible to propose an idea of use of hydraulic booster in such pump. In this field, the authors have presented schematic diagram of a pressure booster with a description of its operation.
Źródło:
Journal of KONES; 2017, 24, 3; 22-28
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Volumetric losses of the compression process in a hypocycloidal pump in the light of the gas desorption effect
Autorzy:
Bajerlein, Maciej
Idzior, Marek
Karpiuk, Wojciech
Smolec, Rafał
Powiązania:
https://bibliotekanauki.pl/articles/2097563.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
gas desorption effect
hypocycloid
pump
injection system
volumetric losses
efekt desorpcji gazu
hipocykloida
pompa
układ wtryskowy
straty objętościowe
Opis:
The effect of gas desorption from the solution with nucleation of gas bubbles is a process that allows to improve fuel atomization in diesel engines. The advantage of such a process, which has been experimentally proven, is a significant reduction in harmful emissions. The conducted research highlighted one of the fundamental problems. This problem concerned the injection pump - it was necessary to design a new construction that would be adapted to the desorption effect. The authors of the work proposed a construction based on a hypocycloidal drive. Due to the nature of the process, i.e. the use of exhaust gases dissolved in diesel fuel, it was very important to analyze the volumetric losses of the compression process - this is the main goal of this article. The authors proved that for the adopted design assumptions, the power of volumetric losses resulting from compressibility is 0.25% of the power consumed by the pump.
Źródło:
Combustion Engines; 2021, 60, 3; 72--79
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cavitating Fuel Flows in Hypocycloid Pump from the Perspective of Applying the Effect of Gas Desorption from The Solution with Nucleation of Gas Bubbles
Autorzy:
Karpiuk, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/102953.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
cavitation
hypocycloid pump
injection systems
compression ignition engine
gas desorption
CFD
kawitacja
pompa hipocykloidalna
układy wtryskowe
silnik o zapłonie samoczynnym
desorpcja gazu
Opis:
This article focuses on the cavitation mechanism from the perspective of utilizing the effect of gas desorption from the solution with nucleation of gas bubbles. This effect is an innovative approach to improving the operating parameters, including emissions parameters, in the compression-ignition engines. The article presents the concept of applying this process in practice and draws attention to the problems associated with its practical implementation. With regard to this issue, an original pump design with a hypocycloid power transmission, enabling application of the desorption effect, was presented. The second part of the article focuses on evaluating the possibility of cavitation occurring in the pump. This task was realized by simulating the cavitating flows in the pump’s return valve – the site at the greatest risk of formation of the first nuclei of this unfavorable phenomenon.
Źródło:
Advances in Science and Technology. Research Journal; 2020, 14, 2; 56-66
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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