Diesel and Biodiesel Lubricity - Revision history

Gerhard Marais: /* 2010 */

2010-12-13T13:20:59Z

‎2010

Gerhard Marais: /* Current/Previous projects */

2010-12-13T13:16:14Z

‎Current/Previous projects

Gerhard Marais: /* Current/Previous projects */

2010-12-13T13:09:38Z

‎Current/Previous projects

137.215.6.53: /* Current/Previous projects */

2010-12-13T12:16:44Z

‎Current/Previous projects

Alchemyst: Hip model is not part of diesel lubricity!

2010-05-26T08:22:59Z

Hip model is not part of diesel lubricity!

Gerhard Marais at 14:55, 24 May 2010

2010-05-24T14:55:56Z

Gerhard Marais at 14:50, 24 May 2010

2010-05-24T14:50:46Z

Gerhard Marais: Created page with 'http://ragnarok.up.ac.za/images/b/b5/Einspritzduese.jpg'

2010-05-24T14:49:00Z

Created page with 'http://ragnarok.up.ac.za/images/b/b5/Einspritzduese.jpg'

New page

http://ragnarok.up.ac.za/images/b/b5/Einspritzduese.jpg

@@ Line 10: / Line 10: @@
 === 2010 ===
-Dean Riley, '''Effect'''<br/>
+Dean Riley, '''Characterisation of components in diesel with good lubricity with special reference to chemical and physical surface interactions'''<br/>
 [ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Diesel%20and%20Biodiesel%20Lubricity/2010/20100528_Report%28marked%29%28RileyD%29.pdf Final Year Project Report]
-Noko Meso, '''Effect'''<br/>
+Noko Meso, '''Characterisation of components in diesel with good lubricity with special reference to electrical contact resistance (ECR) measurement'''<br/>
 [ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Diesel%20and%20Biodiesel%20Lubricity/2010/20100528_Report%28marked%29%28MesoN%29.pdf Final Year Project Report]
-Ryan Schultz, '''Effect'''<br/>
+Ryan Schultz, '''Viscosity of n-hexadecane as a function of shear rate, temperature, pressure and composition'''<br/>
 [ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Diesel%20and%20Biodiesel%20Lubricity/2010/20100528_Report%28marked%29%28SchultzR%29.pdf Final Year Project Report]

← Older revision		Revision as of 13:16, 13 December 2010
Line 8:		Line 8:
	Leenesh Moodliyar, '''Effect of Biodiesel Addition to Lubricity of Coal-Based Diesel'''<br/>		Leenesh Moodliyar, '''Effect of Biodiesel Addition to Lubricity of Coal-Based Diesel'''<br/>
	[ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Diesel%20and%20Biodiesel%20Lubricity/2008/Leenesh%20Moodiyar%20-%20CSC410.pdf Final Year Project Report]		[ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Diesel%20and%20Biodiesel%20Lubricity/2008/Leenesh%20Moodiyar%20-%20CSC410.pdf Final Year Project Report]
		+
		+	=== 2010 ===
		+	Dean Riley, '''Effect'''<br/>
		+	[ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Diesel%20and%20Biodiesel%20Lubricity/2010/20100528_Report%28marked%29%28RileyD%29.pdf Final Year Project Report]
		+
		+	Noko Meso, '''Effect'''<br/>
		+	[ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Diesel%20and%20Biodiesel%20Lubricity/2010/20100528_Report%28marked%29%28MesoN%29.pdf Final Year Project Report]
		+
		+	Ryan Schultz, '''Effect'''<br/>
		+	[ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Diesel%20and%20Biodiesel%20Lubricity/2010/20100528_Report%28marked%29%28SchultzR%29.pdf Final Year Project Report]

@@ Line 6: / Line 6: @@
 == Current/Previous projects ==
 === 2008 ===
-Leenesh Moodliyar, '''    '''<br/>
+Leenesh Moodliyar, '''Effect of Biodiesel Addition to Lubricity of Coal-Based Diesel'''<br/>
-[ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Hip%20Tribology/MaraisG%282008%29/Synovial%20Joints%20-%20Report%28Final%29.pdf Final Year Project Report] | [ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Hip%20Tribology/MaraisG%282008%29/ Project Files]
+[ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Diesel%20and%20Biodiesel%20Lubricity/2008/Leenesh%20Moodiyar%20-%20CSC410.pdf Final Year Project Report]

← Older revision		Revision as of 12:16, 13 December 2010
Line 5:		Line 5:

	== Current/Previous projects ==		== Current/Previous projects ==
		+	=== 2008 ===
		+	Leenesh Moodliyar, ''' '''<br/>
		+	[ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Hip%20Tribology/MaraisG%282008%29/Synovial%20Joints%20-%20Report%28Final%29.pdf Final Year Project Report] \| [ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Hip%20Tribology/MaraisG%282008%29/ Project Files]

← Older revision		Revision as of 08:22, 26 May 2010
Line 5:		Line 5:

	== Current/Previous projects ==		== Current/Previous projects ==
−
−	~~=== 2006 ===~~
−	~~Neil Pieterse, '''Development of a dynamic hip joint simulation model'''<br/>~~
−	[ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Hip%20Tribology/PieterseN%282006%29/Dissertation%28PieterseN%29.pdf Masters Dissertation] \| [ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Hip%20Tribology/PieterseN%282006%29/ Project Files] \| [ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Hip%20Tribology/PieterseN%282006%29/Matlab%20Code/ Matlab Code]

@@ Line 1: / Line 1: @@
 [[File:Einspritzduese.jpg|500px|right]]
-The hip is a complex joint system which carries much of the weight of the body. It has sophisticated interactions between cartilage, bone, synovial ﬂuid and other connective tissue. Due to degeneration of the joint, the use of artiﬁcial hip joints has become necessary. With an increasing number of the ageing population requiring total hip replacements at a younger age (caused by both unhealthy and a more active lifestyles), it is necessary to try and improve the design and longevity of the implant. Due to the sophistication of the hip joint, and the ambition to improve the longevity, it is necessary to understand the principles of operation of the biological hip joint as well as its tribological behaviour. The purpose of the work at the University of Pretoria is focussed on:
+In modern diesel engines, the fuel also fulfils the role of lubricant in the fuel distribution system. Increasingly stringent environmental legislation forces engine manufacturers to decrease the combustion temperature to limit the amount of NOx’s and SOx’s that enter the environment. To achieve this better control of injection -and combustion processes are necessary, seeing that incomplete combustion at lower temperatures will cause soot and unburnt hydrocarbons to enter the atmosphere. The introduction of common rail diesel injection technology ensured that good control was possible, but at this stage the injection pressure is about 15 times higher than it was with conventional plunger injection. The clearances between the injection equipment have also been decreased to ensure that the pressure is not lost through the system. This has placed new demands on the lubrication properties of diesel.
-* Development of an understanding of synovial joints, in particular the hip joint and its components;
-* Development of an understanding of the fundamentals of tribology and learn how it is applied to artiﬁcial hip joints;
+South African environmental legislation limits the amount of sulphur in diesel to 500ppm. The sulphur is removed through a process of hydrotreating the crude oil fractions that are used to blend diesel. The problem is that this process also removes other naturally occurring lubricity enhancing components with the sulphur. As a result of this lubricity additives need to be added to the fuel. Biodiesel (fatty acid methyl esters) have very good lubricity, but have several other limitations.
-* Review current literature on the biotribology of hip joints, with focus on hip implants; and
-* Development of mathematical models describing the behaviour of synovial fluid.
 == Current/Previous projects ==

← Older revision		Revision as of 14:50, 24 May 2010
Line 1:		Line 1:
−	~~http~~://ragnarok.up.ac.za/~~images~~/b/b5/~~Einspritzduese~~.~~jpg~~	+	[[File:Einspritzduese.jpg\|500px\|right]]
		+	The hip is a complex joint system which carries much of the weight of the body. It has sophisticated interactions between cartilage, bone, synovial ﬂuid and other connective tissue. Due to degeneration of the joint, the use of artiﬁcial hip joints has become necessary. With an increasing number of the ageing population requiring total hip replacements at a younger age (caused by both unhealthy and a more active lifestyles), it is necessary to try and improve the design and longevity of the implant. Due to the sophistication of the hip joint, and the ambition to improve the longevity, it is necessary to understand the principles of operation of the biological hip joint as well as its tribological behaviour. The purpose of the work at the University of Pretoria is focussed on:
		+	* Development of an understanding of synovial joints, in particular the hip joint and its components;
		+	* Development of an understanding of the fundamentals of tribology and learn how it is applied to artiﬁcial hip joints;
		+	* Review current literature on the biotribology of hip joints, with focus on hip implants; and
		+	* Development of mathematical models describing the behaviour of synovial fluid.
		+
		+	== Current/Previous projects ==
		+
		+	=== 2006 ===
		+	Neil Pieterse, '''Development of a dynamic hip joint simulation model'''<br/>
		+	[ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Hip%20Tribology/PieterseN%282006%29/Dissertation%28PieterseN%29.pdf Masters Dissertation] \| [ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Hip%20Tribology/PieterseN%282006%29/ Project Files] \| [ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/Hip%20Tribology/PieterseN%282006%29/Matlab%20Code/ Matlab Code]