referigerants used in linear compressor

[yashwant]

hi all,
I am yashwant,working as a trainee with Bosch and Siemens hause appliances,Germany.I have to find out problems in linear compressor.If anybody knows about linear compressor and referigerants used in linear compressor and oil free compressors and their problems..please do guide me.Thank you n waiting for your reply.

[Snowman123]

http://www.freepatentsonline.com/4179630.html

[Lc_shi]

http://www.ajmadison.com/cgi-bin/ajm...SC26960TT.html

[yashwant]

hello all,
thanks for ur reply but m not getting the problem of referigerant R600a and R134a in that compressor its oilfree compressor and referigerant itself works as lubricant ..but after some time this referigerant gets burned and there is blac slug on the cyliderwalls..due to this there occurs wear and tear of piston and cylinder.pls guide me thanks again.