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Analysis of forces in an automobile ECV using in external variable displacement swash plate type compressor for air conditioning control system

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Abstract

To meet the demand of improved comfort for passengers, drive ability and standard in fuel economy; external variable displacement swash (wobble) plate type compressors are used in automobile air conditioning control system because of their low energy consumption and highly efficient characteristics. It controls the compressor displacement by increasing or reducing the swash plate angle. Solenoid operated electromagnetic control valve (ECV) in the compressor controls the air conditioning system by means of a pulse width modulation (PWM) input signal supplied from an external source (controller). The mechanism changes the swash plate angle by increasing or reducing the pressure of swash plate chamber using the ECV functions. The force (solenoid) for ECV operation is important as the force directly related to the movement of the internal feature i.e. mainly plunger of the ECV which is responsible for the amount of air/refrigerant flow that results the air conditioning control procedures with various pressure ports. The research paper highlights the improved theory and equation for calculating the working force (solenoid force) in ECV and experimental analysis of 3 (three) ECV samples followed by the comparison of theoretical and experimental force results.

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Author information

Authors and Affiliations

  1. Division of Mechanical and Automotive Engineering, Kongju National University (KNU), 275, Budae-dong, Cheonan-si, Chungcheongnam-do, 331-717, Korea

    Md. Iqbal Mahmud & Haeng Muk Cho

Authors
  1. Md. Iqbal Mahmud
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  2. Haeng Muk Cho
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Corresponding author

Correspondence to Haeng Muk Cho.

Additional information

Recommended by Associate Editor Ji Hwan Jeong

Md. Iqbal Mahmud received his B.Sc. (2002) and M.Sc. (2010) degrees in Mechanical Engineering from Islamic University of Technology (IUT), Bangladesh and Kongju National University (KNU), South Korea, respectively. At present he is a Ph.D. research student at KNU. He is an Associate Professor at Mawlana Bhashani Science and Technology University (MBSTU), Bangladesh and is currently on study leave.

Haeng Muk Cho is a Professor of Mechanical Engineering and System Design in the division of Mechanical and Automotive Engineering at Kongju National University (KNU), South Korea. His teaching and research activities have been focusing on Internal Combustion Engines, Car Alternative Fuel, Biodiesel, Car Emission Control, Hybrid Vehicles etc.

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Mahmud, M.I., Cho, H.M. Analysis of forces in an automobile ECV using in external variable displacement swash plate type compressor for air conditioning control system. J Mech Sci Technol 28, 1979–1984 (2014). https://doi.org/10.1007/s12206-014-0346-5

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  • DOI: https://doi.org/10.1007/s12206-014-0346-5

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