Subscribe Now Subscribe Today
Science Alert
 
Blue
   
Curve Top
Journal of Applied Sciences
  Year: 2010 | Volume: 10 | Issue: 6 | Page No.: 462-470
DOI: 10.3923/jas.2010.462.470
 
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Friction Reduction in Compressed Natural Gas Direct Injection Engine using Piston Rings with Diffusion Chromium Coating

S. Abdullah, E. Adril, A. Muchtar and A.K. Ariffin

Abstract:
In order to combat dry lubrication occurred in the combustion chamber of a compressed natural gas direct injection engine, the piston or piston rings have to be equipped with measures to address this boundary lubrication issue. Hence, the aim of the study is to address the issue which can minimize sliding friction in the combustion chamber between the piston ring and the cylinder liner. To solve this problem, the wear resistance level toward friction for piston ring during its interaction with the cylinder liner was enhanced using diffusion coating technique. The piston ring is made of ASSAB DF-3 steel and several substances such as 0.9% carbon (C), 0.85% chromium (Cr), 96.6% ferric (Fe), 1.2% manganese (Mn) and 0.55% titanium. The chemical substance which is used for the diffusion process are the mixture of three substances i.e., chromium, ammonium chloride (NH4Cl) and aluminum oxide (Al2O3). The piston ring together with the chromium mixtures were heated at different periods of time. In order to improve friction and wear, the piston ring which is coated with 99.5% chromium dust using a diffusion coating technique yields higher hardness compared to the original piston ring due to its resistance toward wear. The hardness depends on the time maintained during heating. Furthermore, it was also shown that the modified piston ring led to better reduction in coefficient of friction as well as less weight loss due to wear. These characteristics can result in better endurance during engine operation and prevent damage due to lubrication failure.
PDF Fulltext XML References Citation Report Citation
 RELATED ARTICLES:
  •    Structural and Properties Development of Expanded Austenite Layers on AISI 316L after Low Temperature Thermochemical Treatments
How to cite this article:

S. Abdullah, E. Adril, A. Muchtar and A.K. Ariffin, 2010. Friction Reduction in Compressed Natural Gas Direct Injection Engine using Piston Rings with Diffusion Chromium Coating. Journal of Applied Sciences, 10: 462-470.

DOI: 10.3923/jas.2010.462.470

URL: https://scialert.net/abstract/?doi=jas.2010.462.470

COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 

Curve Bottom