This paper presents experimental results of motored engine tests on the wear and profile development of a twin-land oil-control ring. It is shown that the roughness height of the plateau honed liner decreases during running-in, indicating that the deeper grooves remain unaffected. The piston lands are much smoother, and do not show a significant overall change in surface roughness. The profile development results are compared with computer predictions in order to verify the theoretical modeling. It is indicated that the worn land profiles remain tapered, with an inclination resembling the twist angle of the ring. However, there remains a difference in the experimental and the numerically predicted land inclinations. This is probably due to the piston tilt, which was not included in the theoretical model.

1.
Barber
G. C.
, and
Ludema
K.
,
1987
, “
The Break-in Stage of Cylinder-Ring Wear: A Correlation between Fired Engines and a Laboratory Simulator
,”
Wear
, Vol.
118
, pp.
57
75
.
2.
Edwards, S. P., 1992, “The Contribution of Piston Ring Packs and Cylinder Bore Distortion to Engine Friction,” Ph.D. thesis, The University of Leeds, UK.
3.
Furuhama, S., and Hiruma, M., 1975, “The Relation between Piston Ring Scuffing and the Formation of Surface Profile,” Piston Ring Scuffing, Proc. IMechE Conf., paper C67/75, pp. 35–43.
4.
Greenwood, J. A., 1992, “Problems with Surface Roughness,” Fundamentals of Friction: Macroscopic and Microscopic Processes, Proc. NATO Adv. Study Inst. on Fundamentals of Friction, NATO ASI Series E: Applied Sciences, Vol. 220, pp. 57–76.
5.
Greenwood
J. A.
, and
Tripp
J. H.
,
1971
, “
The Contact of Two Nominally Flat Rough Surfaces
,”
Proc. IMechE
, Vol.
185
, pp.
625
633
.
6.
Hegemier, T., and Stewart, M., 1993, “Some Effects of Liner finish on Diesel Engine Operating Characteristics,” SAE-paper 930716.
7.
McCallion, H., Lloyd, T., and Large, J., 1972, “The Formation of Piston Ring Profiles,” Proc. IMechE Trib. Conv., paper C93/72, pp. 55–61.
8.
Nayak
P. R.
,
1971
, “
Random Process Model of Rough Surfaces
,”
ASME JOURNAL OF LUBRICATION TECHNOLOGY
, Vol.
93
, No.
3
, pp.
398
407
.
9.
Patir
N.
, and
Cheng
H. S.
,
1978
, “
An Average Flow Model for Determining Effects of Three-Dimensional Roughness on Partial Hydrodynamic Lubrication
,”
ASME JOURNAL OF LUBRICATION TECHNOLOGY
, Vol.
100
, No.
1
, pp.
12
17
.
10.
Patir
N.
, and
Cheng
H. S.
,
1979
, “
Application of Average Flow Model to Lubrication between Rough Sliding Surfaces
,”
ASME JOURNAL OF LUBRICATION TECHNOLOGY
, Vol.
101
, pp.
220
230
.
11.
Pawlus
P.
,
1996
, “
A Study of the Dependence of the Functional Properties of the Cylinder Liner Surface Layer on the Operating Conditions
,”
J. Eng. Trib., Proc. IMechE Part J
, Vol.
210
, pp.
17
27
.
12.
Priest, M., 1996, “The Wear and Lubrication of Piston Rings,” Ph.D. thesis, The University of Leeds, UK.
13.
Rohde, S. M., 1981, “A Mixed Friction Model for Dynamically Loaded Contacts with Application to Piston Ring Lubrication,” Friction and Traction, Proc. 7th. Leeds-Lyon Symp. Trib., pp. 262–278.
14.
Ruddy
B. L.
,
Dowson
D.
, and
Economou
P. N.
,
1981
, “
A Theoretical Analysis of the Twin-Land Type of Oil-Control Piston Ring
,”
J. Mech. Eng. Sc.
, IMechE, Vol.
23
, pp.
51
62
.
15.
Thomas
T. R.
, and
Sayles
R. S.
,
1978
, “
Some Problems in the Tribology of Rough Surfaces
,”
Trib. Int.
, Vol.
11
, No.
3
, pp.
163
168
.
16.
Thomas
T. R.
,
1982
, “
Defining the Micro-topography of Surfaces in Thermal Contact
,”
Wear
, Vol.
79
, pp.
73
82
.
17.
Visscher, M., Dowson, D., and Taylor, C. M., 1996, “Surface Roughness Modelling for Piston Ring Lubrication: Solving the Problems,” The Third Body Concept: Interpretation of Tribological Phenomena, Proc. 22nd Leeds-Lyon Symp. on Tribology.
This content is only available via PDF.
You do not currently have access to this content.