• Title/Summary/Keyword: 연료 펌프

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Experimental Study on the Fuel Pump of a Small Engine (소형엔진용 연료펌프의 성능에 대한 실험적 연구)

  • Lee, Jun-Sun;Park, Sung-Young
    • Proceedings of the KAIS Fall Conference
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    • 2009.12a
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    • pp.515-519
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    • 2009
  • 본 연구는 엔진 연료펌프의 회전수를 측정하는 방법중 하나인 전류측정법의 타당성에 관한 연구이다. 연료펌프를 제어하기 위해서는 펌프의 회전수 정보를 획득할 필요성이 대두된다. 연료 펌프의 회 전수를 측정하는데 있어서 여러 가지 방법이 있으나 그 중 두 가지 방법으로 실험을 진행하였다. 하나는 가속도 센서를 이용하여 연료 펌프의 진동수을 측정하고 회전수로 환산하는 방법과, 전류 센서를 이용하여 회전수를 계산하는 방법이 있다. 가속도 센서를 사용하는 방법은 신뢰성이 우수하고 정확한 값을 얻을 수 있으나 고가이며 모든 진동을 측정하기 때문에 실제 엔진에서는 사용하기 어렵다. 따라서 전류센서와 가속도 센서를 동시에 적용하여 연료펌프의 성능실험을 수행한 결과, 정밀한 측정을 위한 측정조건을 획득하였다. 정밀한 측정을 위하여 가속도 센서의 경우 0.1Hz이하의 데이터 획득을 필요로 한다. 또한 전류센서로 펌프의 정밀한 회전수 측정이 가능함을 확인하였다.

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Axial Thrust Measurement of Fuel Pump for 75-ton Class Rocket Engine (75톤급 로켓엔진용 연료펌프의 축추력 측정)

  • Kim, Dae-Jin;Hong, Soon-Sam;Choi, Chang-Ho;Kim, Jin-Han
    • Aerospace Engineering and Technology
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    • v.9 no.2
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    • pp.8-13
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    • 2010
  • An effective control of the axial thrust of a turbopump is one of the critical issues for obtaining its operational stability. Axial thrusts of the fuel pump for the 75-ton class rocket engine under development were measured with water as a test propellant at a room temperature. According to the test results, the axial thrust of the fuel pump seemed to satisfy the axial force condition of its bearing. Also, the thrust was increased as a whole when the flowrate of the pump was decreased. Furthermore it was found that the thrust and the leakage flowate were modified when the gaps between the floating ring seals and the impeller were changed.

Performance of Blowoff Flow for a LPG Fuel Pump with Various Fuel Filters (LPG 펌프에서 필터 종류에 따른 펌프 토출성능에 대한 연구)

  • Lee, Seok-Hwan;Park, Cheol-Woong;Kim, Chang-Up
    • Journal of the Korean Institute of Gas
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    • v.13 no.4
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    • pp.1-7
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    • 2009
  • In recent years, the needs for more fuel-efficient and lower-emission vehicles have driven to use the alternative fuel of LPG(Liquefied Petroleum Gas) which is able to meet the more stringent legislations without many modifications to current engine. LPLi (Liquid Phase LPG Injection) system (the 3rd generation LPG injection system) is the core technology to produce power equivalent to a gasoline engine with less emissions. The LPG fuel pump can supply the compressed LP gas in the liquid phase to engine. The fuel filter is attached in the fuel pump to eliminate the remnants in the liquid phased LP gas and the performance of blowoff flow for a pump can be varied with various filters. In this study, experiments were conducted to investigate the performance and efficiency of the impeller type LPG fuel pump under various filter types of microfiber, double mesh and external filter. And blowoff flow for a LPG fuel pump was measured according to the temperature of the fuel.

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로켓엔진용 연료펌프의 성능 시험

  • Kim, Dae-Jin;Hong, Soon-Sam;Choi, Chang-Ho;Kim, Jin-Han
    • Aerospace Engineering and Technology
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    • v.4 no.1
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    • pp.143-149
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    • 2005
  • To evaluate the hydraulic and cavitation performance of a fuel pump for a liquid rocket engine, performance tests of the pump, which consist of hydraulic tests and cavitation tests, were conducted in water environment with various condition. In the hydraulic tests, the head, efficiency and volute pressure distribution of the pump are found to follow the conventional similarity rule, whereas the secondary flow pressure shows a small deviation from the similarity rule. As the floating gap is constricted, the efficiency of the pump improves and the secondary flow pressure decreases. However, the inner diameter of bypass line orifice does not show clear relationship with the pump efficiency. In the cavitation tests, measurements of the head and the NPSH indicate that the pump shows better cavitation performance as the rotational speed of the pump increases.

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Development of Fuel Pump Lower Housing for Ethanol Engine (에탄올엔진용 연료펌프 하우징 개발)

  • Lee, Byeong-Hoon;Kim, Chang-Su;Sin, Kyeong-Sick;Park, Sung-Young
    • Proceedings of the KAIS Fall Conference
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    • 2011.12b
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    • pp.521-524
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    • 2011
  • 본 논문에서는 냉간단조된 연료펌프와 다이캐스팅된 연료펌프에 대한 성능 실험을 수행하였다. 수행결과 냉간단조와 다이캐스팅으로 가공된 하부하우징으로 제작된 연료펌프는 회전수마다 미미한 차이를 보이지만, 전체적으로 동등한 성능을 보이고 있다.

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Performance Characteristics with Various Fuel Composition and Temperature for an External Type Fuel Pump in LPLi System (LPLi 시스템에서 외장형 펌프의 연료조성 및 온도에 따른 성능특성 연구)

  • Nam, Deok-Woo;Yoon, Jun-Kyu;Lim, Jong-Han
    • Journal of Advanced Marine Engineering and Technology
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    • v.35 no.5
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    • pp.566-575
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    • 2011
  • Since LPG (Liquefied petroleum gas) fuel supply system has an advantage of low emission characteristics, many studies have been conducted. In spite of the advantage of LPG supply system, a higher vapor pressure and lower viscosity than diesel or gasoline fuel may cause unstable running of fuel pump by the deterioration in lubrication performance and chemical reaction with rubber parts than that of diesel and gasoline fuel. Therefore its physical properties can cause the deterioration of durability. In this research, we developed an external type LPG pump which has the advantage of the price competitiveness and the convenient maintenance for LPLi system. The experiments were carried out in order to assess characteristics of the external type fuel pump at different fuel composition and temperature. As a result, there aren't any differences between internal and external type pump performance. It is observed that the same level of efficiency was maintained for both pumps as flow rate was increased with higher fuel temperature and more contents of propane in the fuel. And the pressure difference in LPLi system is maintained at constant with the various fuel compositions and temperatures due to their own characteristics of fuel supply system.

Preliminary Design on Jet Pump for Fuel Transfer and Analysis of Flow Distribution (연료 이송용 제트펌프 기본 설계 및 유동장 해석)

  • Kong Chang-Duk;Park Jong-Ha;Kim Young-Kwang;Han Dong-Joo
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • 2006.05a
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    • pp.125-129
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    • 2006
  • In the present study, preliminary design and analysis of flow distribution for a jet pump, which is able to transfer fuel from the tank to the engine, were performed as an aerospace component technology development project. The jet pump is a core part, which is normally installed in the fuel tank, to supply the fuel from the tank to the engine feed pump, or to transfer the feed between tanks. In order to design preliminarily installed in the jet pump, equations for design were modelled using SIMULINK, and the design was carried out based on the simulation model.

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Study o Preliminary Design on Jet Pump for Fuel Transfer Using SIMULINK (SIMULINK를 이용한 연료 이송용 제트펌프 기본 설계에 관한 연구)

  • Kong Chang-Duk;Park Jong-Ha;Omollo Owino George;Han Dong-Joo
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • 2005.11a
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    • pp.464-468
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    • 2005
  • In the present study, preliminary design and performance analysis for a jet pump, which is able to transfer fuel from the tank to the engine, were performed as an aerospace component technology development project. The jet pump is a core part, which is normally installed in the fuel tank, to supply the fuel from the tank to the engine feed pump, or to transfer the feed between tanks. In order to design preliminarily installed in the jet pump, equations for design were modelled using SIMULINK, and the design was carried out based on the simulation model.

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Design and Analysis of Voice Coil Actuator to Drive Fuel Pump in Automobile (자동차 연료펌프 구동용 보이스 코일 전자기 엑츄에이터의 설계 및 해석)

  • Park, Se-Myung;Kim, Jin-Ho;Bai, Cheol-Ho
    • Journal of the Korean Magnetics Society
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    • v.20 no.6
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    • pp.234-238
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    • 2010
  • Solenoid diaphragm fuel pump, which to replace mechanical fuel pump system by utilizing cam-shaft driving force, is in the spotlight for being a high efficient green car component. However, there is a drawback in power consumption as a solenoid diaphragm fuel pump only relies on solenoid for its flux needed in reciprocating motion. Therefore, this research proposes permanent magnet type VCM (Voice Coil Motor) fuel pump system to minimized power consumption. Furthermore, the study compares and analyzes power consumption and dynamic performance between the current and the former solenoid diaphragm pump by conducting finite element analysis with the commercial electromagnetic solver, MAXWELL.

Study on Preliminary Design of Fuel Transfer Jet Pump Using SIMULINK (SIMULINK를 이용한 연료 이송용 제트펌프 기본 설계에 관한 연구)

  • Kong Chang-Duk;Park Jong-Ha;Han Dong-Joo
    • Journal of the Korean Society of Propulsion Engineers
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    • v.10 no.1
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    • pp.38-43
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    • 2006
  • In the present study, preliminary design and analysis for a jet pump, which is able to transfer fuel from the tank to the engine, were performed as an aerospace component technology development project. The jet pump is a core part, which is normally installed in the fuel tank, to supply the fuel from the tank to the engine feed pump, or to transfer the feed between tanks. In order to design preliminarily installed in the jet pump, equations for design were modelled using SIMULINK, and the design was carried out based on the simulation model.