Optimising Piston Ring Contact Face Chamfer for High Performance Engines

Dickinson, Matthew

doi:10.4271/2013-01-0965

Cited by 6 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 1 shows the current and targeted heat balance of an IC engine according to which the goal of tribologists is to reduce friction by 3.1%.The losses due to friction in the internal combustion (I.C) engine can be controlled by surface modification, 1,2 lubrication chemistry, 3,4 new material development 5,6 or by changing design. 7,8 However, nowadays, surface modification is the main avenue to minimise the frictional losses in IC engines.…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect of surface texturing and coating on the friction between piston ring and cylinder liner contact

Mishra

Ramkumar

2020

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

It is well-established that the piston ring/cylinder liner (PRCL) contact is the major contributor to friction losses in the internal combustion engine. While numerous studies have evaluated the individual effect of surface engineering techniques like surface texturing, coating, on the PRCL system, however, its combined effect has not been thoroughly explored. In this work, the combined effect of surface coating and texturing on the frictional properties of piston ring/cylinder liner (PRCL) contact in different lubrication regimes has been simulated using a reciprocating tribometer rig. A cylinder liner of cast iron material and three different types of piston ring coatings, namely Diamond-like-carbon (DLC), chrome, and moly-chrome-ceramic (MCC) were used as samples. Under all lubrication regimes, the coated samples with texturing had better frictional performance compared to non-textured coated samples. The maximum friction reduction was observed for textured DLC coated samples under boundary lubrication regime. This behaviour was proposed to be a result of the synergistic effect of graphitisation and texturing.

show abstract

Section: Introductionmentioning

confidence: 99%

Synergistic effect of surface texturing and coating on the friction between piston ring and cylinder liner contact

Mishra

Ramkumar

2020

Proceedings of the Institution of Mechanical Engineers, Part J:

View full text Add to dashboard Cite

show abstract

“…As the rotational momentum builds during operation, the highest levels of rotation are recorded in the first 20 radians of the crank rotation. Studies have been noted [1,3,4,14,15] that pistons rings might exhibit a continuous motion. However other work has been presented where little or no rotation has been observed [16,17].…”

Section: Discussionmentioning

confidence: 99%

“…Figure 2 shows the SimMechanics model used. The methodology used has been previously described [2,3,4].…”

Section: Systemmentioning

confidence: 99%

See 1 more Smart Citation

A Study into Compression Ring Dynamics using Response Surface Methodology

Dickinson¹,

Renevier²,

Calderbank³

2015

SAE Int. J. Passeng. Cars - Mech. Syst.

Self Cite

View full text Add to dashboard Cite

For decades the operational dynamics of the compression ring during operation, have been subject to debate [1,2,3,4,5,6,7]. A complex computer simulation, using Design Of Experiments (DOE) methodology, was developed to study the effect of the compression ring rotation during running-in stages. Response Surface (RS) has been used to optimize ring displacement, as function of ring mass, width and radius. The optimised surface response has been compared to used compression rings and has shown a 2% variation between calculated and measured values.

show abstract

Effects of surface texturing on the tribological behavior of piston rings under lubricated conditions

Zhang

et al. 2016

Industrial Lubrication and Tribology

View full text Add to dashboard Cite

Purpose – The piston ring-cylinder liner pair is one of the most important tribological systems of an internal combustion engine. The friction loss of the piston ring-cylinder liner pair accounts for the largest portion of total efficiency losses. Therefore, improving the tribological system design of the piston ring-cylinder liner pair can reduce friction losses and bring tremendous economic benefits to society. This paper aims use surface texturing, which is proving to be an effective method, for improving the tribological performance of sliding surfaces. Design/methodology/approach – In this paper, an experimental study using a pin-on-disk tribometer was carried out to evaluate the effects of surface texturing on friction reduction of piston rings under various loads and sliding velocities. Rectangular- and circular-shaped textures with different depths and area densities were produced by a Femtosecond laser. Comparison experiments were conducted with un-textured rings. Findings – The results indicate that the friction performance of the ring surface was significantly improved by surface texturing, and the running-in stage was also shortened. More specifically, it was found that the rectangular-shaped texture had a better effect on friction reduction than the circular-shaped texture. Results also indicate that an optimum texture density existed for the rectangular-shaped texture. Additionally, it was observed that the average friction coefficient reduction of the textured ring decreased with increasing load and increased with increasing sliding velocity. Originality/value – Consequently, these findings provide a more in-depth understanding of the relationship between micro-textures and tribological properties of piston rings in lubricating sliding.

show abstract

Optimising Piston Ring Contact Face Chamfer for High Performance Engines

Cited by 6 publications

References 9 publications

Synergistic effect of surface texturing and coating on the friction between piston ring and cylinder liner contact

Synergistic effect of surface texturing and coating on the friction between piston ring and cylinder liner contact

A Study into Compression Ring Dynamics using Response Surface Methodology

Effects of surface texturing on the tribological behavior of piston rings under lubricated conditions

Contact Info

Product

Resources

About