A New Floating-Liner Test Rig Design to Investigate Factors Influencing Piston-Liner Friction

Paper #:
  • 2012-01-1328

Published:
  • 2012-04-16
Citation:
Law, T., MacMillan, D., Shayler, P., Kirk, G. et al., "A New Floating-Liner Test Rig Design to Investigate Factors Influencing Piston-Liner Friction," SAE Technical Paper 2012-01-1328, 2012, https://doi.org/10.4271/2012-01-1328.
Pages:
13
Abstract:
The largest contribution to engine rubbing friction is made by the piston and piston rings running in the cylinder liner. The magnitude and characteristics of the friction behaviour and the influence on these of factors such as surface roughness, piston design and lubricant properties are of keen interest. Investigating presents experimental challenges, including potential problems of uncontrolled build-to-build variability when component changes are made. These are addressed in the design of a new motored piston and floating liner rig. The design constrains transverse movement of a single liner using cantilevered mounts at the top and bottom. The mounts and two high stiffness strain gauged load cells constrain vertical movement. The outputs of the load cells are processed to extract the force contribution associated with friction. The liner, piston and crankshaft parts were taken from a EuroV-compliant, HPCR diesel engine with a swept capacity of 550cc per cylinder. Cooling, lubrication and an air injection system for cylinder pressure regulation are described. Example results are presented.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$28.00
Mail
$28.00
Members save up to 42% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Article
2017-07-26
Technical Paper / Journal Article
2011-04-12
Training / Education
2018-05-10
Technical Paper / Journal Article
2011-08-30
Event
2018-04-10
Book
2009-10-08