The effect of dynamics of the swash plate–slippers–piston assembly on friction torques in bearings in compressor of cooling aggregate

Marek Woźniak,Krzysztof Siczek,Tomasz Szydłowski

doi:10.2478/mme-2020-0006

Marek Woźniak, Krzysztof Siczek + Show 1 more

Open Access

https://doi.org/10.2478/mme-2020-0006

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Abstract

Abstract The swash plate type compressor utilized in car air conditioning devices and cooling system was analyzed in this study. Proper dynamic behavior of the components in such a compressor affected the correct functioning of the whole system. The aim of the study was to identify the characteristics of the main motion components in the swash plate–slippers–piston assembly of the compressor and to estimate the friction torques in its bearings. Some models of this assembly are elaborated and presented in the paper. The main components of slipper complex motion were identified, such as reciprocal motion along the axis of piston, rotation around piston axis, and short-time rotation around its own axis. Friction torque in axial bearing was higher than in journal bearing and varied with the rotational angle. Friction torques in journal bearings varied with the rotational angle and had different courses for two bearings of the compressor.

Highlights

Air conditioning is a very important problem related to the comfort and safety during driving the cars, especially in conditions of elevated values of the ambient temperature and/or humidity
The swash plate type compressor utilized in car air conditioning devices and cooling system was analyzed in this study
The aim of the study was to identify the characteristics of the main motion components in the swash plate–slippers–piston assembly of the compressor and to estimate the friction torques in its bearings

Summary

Introduction

Air conditioning is a very important problem related to the comfort and safety during driving the cars, especially in conditions of elevated values of the ambient temperature and/or humidity. Many vehicles with cold storages possessing a cooling system with the aggregate driven. There are several types of compressors used in car air conditioning devices and cooling system. The swash plate type compressor is analyzed in this study. Compressor of such type is suitable for a wide range of vehicles. Proper dynamic behavior of components in such a compressor affects the correct functioning of the whole system. The aim of the study was to identify the characteristics of the main motion components in the swash plate–slippers–piston assembly of the compressor and to estimate the friction torques in its bearings

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