• Title/Summary/Keyword: 자동차용튜브

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미국 자동차용 튜브 수급 전망

  • Korea Tire Manufacturers Association
    • The tire
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    • s.99
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    • pp.48-48
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    • 1982
  • 미국의 자동차용 튜브 수요동향을 보면 ,트럭ㆍ버스용 및 승용차용 튜브는 감소현상을 나타내고 있으나 농경용 및 산업용 튜브의 수요는 점차 증가되고 있는 현상이다. 이와같은 경향은 Tubeless 타이어의 영향이 큰 것으로 해석된다. 최근 미국의 튜브수입 각국 점유율은 한국산 튜브의 점유율이 급증하고 있다고 한다. 앞으로는 농경용 및 산업용 튜브 수요가 더욱 증가될 것으로 예상되므로 농경용ㆍ산업용 튜브 수출에 한층 더 노력함으로써 좋은 결과를 얻을 수 있을 것으로 기대된다.

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모로코의 자동차용 튜브시장동향

  • Korea Tire Manufacturers Association
    • The tire
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    • s.152
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    • pp.40-46
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    • 1991
  • 이 자료는 ‘90년 6월 KOTRA(대한무역진흥공사) 카사블랑카 무역관에서 조사한 ’모로코의 최근 자동차용 타이어 튜브시장동향과 우리나라의 대응전략‘이라는 보고서를 기초로 하여 작성한 것이다.

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Developing the Performance Analysis Model of the Heat-Shrink-Tube Manufacturing Process using a Simulation Method (시뮬레이션 기법을 통한 자동차용 열 수축 튜브 생산공정모델 개발)

  • Cho, Gyu-Sung;Lee, Seung-Hoon
    • Journal of the Korea Society for Simulation
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    • v.19 no.4
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    • pp.21-29
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    • 2010
  • This research suggests a simulation model regarding the performance analysis of the Heat-Shrink-Tube manufacturing process using a simulation method. To analyze this study, firstly, we have collected the operating data from 'A' automobile parts company. Secondly, we have analyzed the collected data to apply a simulation model. Thirdly, we have developed a simulation model to experiment the process analysis and the line balancing methodology. The proposed simulation model can be executed by various input data without changing the simulation model and the performance of the Heat-Shrink-Tube Manufacturing system can be calculated by this model.

Performance Analysis of Automobile Type Air Conditioner Tube Connector (자동차용 에어컨 튜브 커넥터의 성능 해석)

  • Jang, Sung-Cheol;Kim, Nam-Kyung
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.6 no.2
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    • pp.52-58
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    • 2007
  • This study shows a numerical method to predict automobile type air conditioner tube connector in the forming process. The simulation approach with 3-D FEM program(ABAQUS) for forming process, forming process simulation is in good agrement with it in tendency. Finally, we compared the forming result with simulation. The result of research showed thai forming process technology is promising to produce automobile type air conditioner tube connector.

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85년도 일본타이어 수출실적

  • Korea Tire Manufacturers Association
    • The tire
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    • s.125
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    • pp.29-36
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    • 1986
  • 본자료는 일본 통상산업성 화학공업 통계조사실에서 발표된 고무제품 통계속보에서 발췌한 것으로, '85년도 일본 타이어 수출실적을 각국별ㆍ차종별로 조사분석한 것이다.<편집자주>

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일본타이어산업의 수급전망

  • Korea Tire Manufacturers Association
    • The tire
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    • s.102
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    • pp.36-40
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    • 1982
  • 본고는 1981년 일본 EXXON CHEMICAL 에서 일본 타이어 산업의 장기 전망(1982~1990)을 조사ㆍ추정한 것이다. 특히 본조사에서는 타이어 산업에 직접 연관되는 각종 요인(자동차생산ㆍ보유대수, 인구, GNP, 소비자물가지수 등)들을 세밀히 조사분석하여 자동차용 및 자전차용 타이어 튜브의 수급실적과 장기수급전망을 예측ㆍ추정하였다.

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A study on the design of a trumpet horn for automobiles based on acoustic reactance at the horn throat (혼 입구에서의 음향 리액턴스에 근거한 자동차용 트럼펫 혼의 설계 연구)

  • Junsu Lee;Woongji Kim;Daehyun Kim;Dongwook Yoo;Wonkyu Moon
    • The Journal of the Acoustical Society of Korea
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    • v.43 no.1
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    • pp.39-48
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    • 2024
  • A car horn serves a crucial safety role as a means of communication between drivers and a part that alerts pedestrians in advance. While previous studies have utilized finite element method and electric circuit model to simulate and analyze characteristics of the car horns, there remains a lack of research on design methods of a trumpet horn. This paper presents a design approach that predicts the operating frequency based on the acoustic reactance at the throat of the horn, once the vibrating part is determined. We deal with a horn combining both an exponential horn and a waveguide in the acoustic section, and confirm that the acoustic reactance at the horn throat measured by impedance tube experiment agrees well compared with the numerical result obtained using the finite element method. The resonance frequency of the car horn is predicted using the COMSOL Multiphysics finite element numerical analysis model, and the proposed design method is validated by measuring the operating frequency of the designed horn in a sound pressure experiment. As a result, the resonance measured in a semi-anechoic chamber environment by applying a DC voltage of 12 [V] excluding the holder occurs accurately within a few [Hz] of the design operating frequency. This paper discuss the design method of a trumpet horn from the perspective of the horn's acoustic reactance, and is expected to be useful for designing horn systems.