Design for Improving the Performance of a Control Valve in a Variable Compressor

Lee, Yong-Joo; Lee, Geon-Ho; Lim, Byeong-Eun

doi:10.1007/978-3-642-24145-1_46

Cited by 4 publications

(3 citation statements)

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“…Typical pressure pulsation equation: (1) c is the acoustic velocity, p is the instantaneous pressure, t is time, x is the displacement.…”

Section: Governing Equationsmentioning

confidence: 99%

“…Since the fluid in the ECV is a continuous elastomeric, so that the fluid itself has natural frequency, when the excitation frequency and the fluid compressor itself movement close to the natural frequency when the resonance will occur, this time varying the amplitude very large, so the compressor is running, you should try to avoid the occurrence of fluid resonance [1].…”

Section: Introductionmentioning

confidence: 99%

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A Study on the Analysis vibration of fluid flow in ECV

Wangwenhai¹,

Cho²

2015

Journal of Energy Engineering

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Pipe vibration caused great threat to the safety in production. Strong pipeline vibration will line accessories, especially the joints and pipe fittings etc. pipe joints loosening and rupture, causing serious accidents. By the action of the compressor constant fluid flow within the pipe, this process produces pulsating fluid flow may cause vibration of the pipe, thereby reducing the efficiency of the pipeline, structural vibration induced fatigue, thereby resulting in even piping structural damage. This paper studies on the vibration problems caused by fluid, by analyzing the causes of pipeline vibration and factors affecting pipeline vibrations, FEM (Finite Element Method) analysis of modal and enforced vibration.

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“…Typical pressure pulsation equation: (1) c is the acoustic velocity, p is the instantaneous pressure, t is time, x is the displacement.…”

Section: Governing Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Study on the Analysis vibration of fluid flow in ECV

Wangwenhai¹,

Cho²

2015

Journal of Energy Engineering

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“…Compressors using for vehicle air conditioning system, consumes a lot of engine power as it is a high efficiency requiring component. At present, automotive industries prefer variable capacity compressors instead of fixed capacity compressors because of its low energy consumption and highly efficient characteristics [3]. Variable displacement compressors runs constantly when the air conditioning system is switched on and refrigerant flow is controlled by effectively changing the displacement of the compressor to suit the prevailing operating conditions [4].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Crankcase Flow of an Automobile ECV for Air Conditioning Control System

Mahmud

Cho

2013

AMM

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Electromagnetic control valve (ECV) controls an automobile vehicle air conditioning compressor based on a pulse width modulation (PWM) input signal that supplied from an external controller. For maintaining a suitable range of temperatures inside the vehicle, suction and crankcase port pressure controls the swash (wobble) plate at certain angle. Suction and crankcase port pressure controlled in ECV can be analyzed by experimental test by considering different technical assumptions. This research paper highlights the flow of air from crankcase port with correspondence with amount of variable supply of current to obtain the experimental test data which is important to maintain the vehicle temperature inside the compartment for passengers comfort.

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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

Mahmud

Cho

2014

J Mech Sci Technol

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Design for Improving the Performance of a Control Valve in a Variable Compressor

Cited by 4 publications

References 0 publications

A Study on the Analysis vibration of fluid flow in ECV

A Study on the Analysis vibration of fluid flow in ECV

Analysis of Crankcase Flow of an Automobile ECV for Air Conditioning Control System

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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