MEASUREMENT OF OIL FILM BETWEEN SWASH PLATE AND SHOE FOR SWASH PLATE TYPE COMPRESSOR

摘要

The understanding of lubrication state on sliding parts of swash plate type compressors is of paramount importance for their reliability. The authors attempted to quantify the thickness of oil film forming in the contact zone between the swash plate and the shoe. The thickness of oil film between the swash plate and the shoe was determined by the oil film thickness distribution and the absolute value of the average oil film thickness. Specifically, the distribution of the oil film thickness was determined by observing interference fringes of the reflected light. The absolute value of the average oil film thickness was determined by measuring the electric resistance between the shoe and the swash plate. Obtained results showed that the oil film breakage did not occur from normal operation conditions to low oil rate conditions and the state of lubrication was good.