BlockOnRing

WHY

Air conditioner compressor fluids have to prevent friction and wear under elevated gas pressure.  Standard Pin&Vee Block tests with gas 'bubbling' through the lubricant do not correlate with field behaviour, especially with CO2 as the cooling medium.  Another simulation with pressurized gas is needed.  We selected the Falex Block on Ring configuration, as it also recreates the line contacts and is able to work at higher speed than the Pin&Vee block machine.

HOW

Our Falex Block on Ring machine allows pressurizing the lubricant chamber with a gas, up to 10 bar.  Standard block-on-ring tests are done with and without pressure on the dissolved gas.  Tests with increasing contact loads (EP) and tests with constant load (Anti-wear) are done.

 b2ap3_small_BlockOnRing Applications | FACTLABS.ORG  b2ap3_small_BlockOnRingConfigs Applications | FACTLABS.ORG

 

RESULT

b2ap3_thumbnail_Divergence Applications | FACTLABS.ORG

 

b2ap3_thumbnail_Results Applications | FACTLABS.ORG A full text on the presentation, given at the TAE Esslingen Conference of 2014, can be found in our presentation download area or click here for direct access.