• Title/Summary/Keyword: Piston inertia force

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A Study on the Swash Plate Behavior of Variable Displacement Compressor for Automotive Air Conditioning System (차량용 가변용량 압축기의 사판 거동에 관한 연구)

  • Lee, Tae-Jin;Lee, Geon-Ho
    • Proceedings of the KSME Conference
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    • 2004.11a
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    • pp.1335-1340
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    • 2004
  • Due to the distinct advantages of comfort, drive ability and fuel economy standard, the variable displacement swash plate type compressor which can control the compressor displacement by increasing or reducing the swash plate angle has been developed for automotive air-conditioning system. That can be obtained constant temperature of car room on the variation cooling capacities or engine speeds. This paper was carried out the analysis of swash plate behavior to obtain the forces and moments applied to the swash plate and to get the variable controlability on the variation of compressor speeds and swash plate chamber pressures. The results of simuation agree very well with the experimental data.

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Control of Torsional Vibration using Uneven Crank Angels on the Shafting for Diesel Power Plant (부등간격 크랭크 배치각에 의한 디젤 발전소 축계의 비틀림진동 제어)

  • 이돈출;유정대;김정렬
    • Journal of KSNVE
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    • v.10 no.4
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    • pp.655-661
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    • 2000
  • Diesel power plant can be used as a power supplier for the isolated place where consumption of electric power is variable. The reason is that mobility and durability of diesel engine is superior to those of other thermal engines. However, there are some disadvantages for using these diesel engines such as bigger vibratory excitation force comparing to the others, which result from high combustion pressure of cylinders and inertia force of piston reciprocating masses. In this paper, control and optimization of torsional vibration of 12K90MC-S engine for diesel power plant using uneven crank angles is identified by theoretical analysis and vibration measurement.

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A Study on Reducing Vibration of Oil-Free Reciprocating Air Compressors (오일프리 왕복동식 공기압축기 진동저감을 위한 방안 연구)

  • Song, Min-Su;Park, Eun-Suk;Hwang, Sung-Wook;Oh, Seok-Jin;Ko, Hyung-Keun
    • Proceedings of the KSR Conference
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    • 2011.10a
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    • pp.656-662
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    • 2011
  • Recently, rolling stock technology has rapidly developed. Nevertheless, ride quality and vibration vibration on vehicle still need more study. EMU to be operated on SMRT Line 7(SR001) extension section is applied to oil-free reciprocating air compressor considering maintainability and convenience of inspection. But reciprocating air compressor compresses the air by back-and-forth motion of piston, and spreads the vibration to surrounding structures by its force of inertia. Optimum design of mounting bracket is able to reduce the vibration. As a result, we analyzed the frequency spectrum on vibration upon value by measuring vibration during operation of air compressor. On this study, we comprehend the vibration transmission process of reciprocating air compressor and consider the measure for reducing vibration by minimizing propagation of vibration.

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