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

Format:

Conference/Event

Author/Creator:

Law, Law, author.

Contributor:

Kirk, Geoff

Macmillan, David

Pegg, Ian

Shayler, Paul J.

Stark, Roland

Conference Name:

SAE 2012 World Congress & Exhibition (2012-04-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

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

Notes:

Vendor supplied data

Publisher Number:

2012-01-1328

Access Restriction:

Restricted for use by site license