Difference between revisions of "T12 & T13 Ball On Cylinder Lubricity Evaluator (BOCLE) & Scuffing Load - Ball On Cylinder Lubricity Evaluator (SL-BOCLE)"

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Both the Ball On Cylinder Lybricity Evaluator (BOCLE) and the Scuffing Load - Ball On Cylinder
+
[[File:IMG 4455.JPG|400px|Right|thumb|BOCLE(Left) & SL-BOCLE(Right)]] 
−
Lubricity Evaluator work on the principle of testing the lubricity of a fuel/lubricant. A non-rotating
+
 
 +
Both the Ball On Cylinder Lubricity Evaluator (BOCLE) and the Scuffing Load - Ball On Cylinder
 +
Lubricity Evaluator (SL-BOCLE) work on the principle of testing the lubricity of a fuel/lubricant. A non-rotating
 
ball is forced against a rotating cylinder. The cylinder is partially immersed in a bath of the fuel to   
 
ball is forced against a rotating cylinder. The cylinder is partially immersed in a bath of the fuel to   
 
allow the fuel to be constantly carried to the area of contact.   
 
allow the fuel to be constantly carried to the area of contact.   
−
 
−
[[File:IMG 4455.JPG|400px|Right|thumb|BOCLE(Left) & SL-BOCLE(Right)]]  [[File:IMG 4440.JPG|400px|right|thumb|Ball,Ring & Bath]]
 
  
 
The BOCLE & SL-BOCLE machines operate on much the same principals. They are nearly identically
 
The BOCLE & SL-BOCLE machines operate on much the same principals. They are nearly identically
Line 11: Line 11:
 
2) The qualifying parameters and test methods (See ASTM link below).<br/>
 
2) The qualifying parameters and test methods (See ASTM link below).<br/>
 
3) The maximum load they can carry.<br/>
 
3) The maximum load they can carry.<br/>
−
 
−
In this Table some basic differences are presented:
 
−
 
−
[[File:BOCLE table 2.jpg]]
 
 
<br/>
 
<br/>
−
The BOCLE is a wear test. A microscope and camera is used to quatify the size and record the appearance.  
+
 
 +
The BOCLE is a wear test. A microscope and camera is used to quantify the size of the wear scar and record the appearance.  
  
 
The SL-BOCLE is a load carrying capacity test. A series of loads are applied until a sudden
 
The SL-BOCLE is a load carrying capacity test. A series of loads are applied until a sudden
−
change in the friction coefficient is observed (higher than 0.175). This load then represents
+
change in the friction coefficient is observed (higher than 0.175). This load is used to characterize
−
some of the lubricity behaviour.<br/>
+
the lubricity behaviour of the fluid.<br/>
−
Note the suggested loading sequence in the operating manual.
+
Note:the suggested loading sequence is in the operating manual.
 +
 
 +
[[File:IMG 4440.JPG|400px|right|thumb|Ball,Ring & Bath]]
 +
 
 +
 
 +
In this Table some basic differences are presented:
 +
 
 +
 
 +
[[File:BOCLE table 2.jpg]]
  
 
Both units are operated via a simulink interfaces found on the PC next to the units (Univ PC nr: 766118).  
 
Both units are operated via a simulink interfaces found on the PC next to the units (Univ PC nr: 766118).  
 +
 +
 +
  
 
== Documentation ==
 
== Documentation ==
Line 51: Line 59:
 
[ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/MSDS%20Ref%20fuels.doc click here]
 
[ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/MSDS%20Ref%20fuels.doc click here]
  
−
=== Wiring diagrams ===
+
=== Wiring, Flow & Instrumentation diagrams ===
−
Overall wiring diagram [[Media:Example.ogg]]<br/>
+
Overall wiring diagram <br/>
−
Detailed Opto wiring diagram [[Media:Example.ogg]]<br/>
+
BOCLE<br/>
 +
[ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/BOCLE%20overall2012.pdf PDF]
 +
[ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/BOCLE%20overall22012.vsd VISIO]<br/>
 +
SL-BOCLE<br/>
 +
[ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/SLBOCLE%20overall2012.pdf PDF]
 +
[ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/SLBOCLE%20overall22012.vsd VISIO]
 +
 
 +
 
 +
 
 +
Detailed Opto wiring diagram <br/>
 +
BOCLE<br/>
 +
[ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/BOCLE%20wiring2012.pdf PDF]
 +
[ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/BOCLE%20wiring22012.vsd VISIO]<br/>
 +
SL-BOCLE<br/>
 +
[ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/SLBOCLE%20wiring2012.pdf PDF]
 +
[ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/SLBOCLE%20wiring22012.vsd VISIO]<br/>
 +
 
 +
 
 
Piping diagram (Air flow)  
 
Piping diagram (Air flow)  
 +
Identical for both
 
[ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/BOCLE%20piping%20diagram.pdf click here]
 
[ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/BOCLE%20piping%20diagram.pdf click here]
  
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The equipment was conntected to the OPTO 22 network in 2012 by Jacques Langenhoven to allow data
 
The equipment was conntected to the OPTO 22 network in 2012 by Jacques Langenhoven to allow data
 
logging and control through the lab network and OPTO system.
 
logging and control through the lab network and OPTO system.
 +
 +
However after series of renovations in the Tribology lab over a space of 5 years (2012-2017), the instruments fell out of use.
 +
They became redundant and several parts and wiring were lost or no longer functional.
 +
In 2017 much work was done by Andrew Sakyi to reinstate both machines into good working conditions and communication to the OPTO system was established.
  
 
== Current/Previous projects ==
 
== Current/Previous projects ==
 +
In reverse chronological order
 +
 +
===2018===
 +
Trinity Thobejane, '''Automation of the humidifier for the BOCLE and SL-BOCLE'''<br/r>
 +
[http://chemeng.up.ac.za/wiki/images/f/f2/CML_Report_T_Thobejane-min.pdf Final report document]
 +
 +
=== 2017 ===
 +
Andrew Sakyi, '''Reconditioning of the SL-BOCLE and BOCLE Instrument.'''<br/>
 +
[http://chemeng.up.ac.za/wiki/index.php/Special:ListFiles Final Report document] <br/>
 +
[http://chemeng.up.ac.za/wiki/index.php/Special:ListFiles Laboratory Report document]
  
 
=== 2012 ===
 
=== 2012 ===
 
Jacques Langenhoven, '''The commissioning of the BOCLE & SL-BOCLE in the Tribology lab'''<br/>
 
Jacques Langenhoven, '''The commissioning of the BOCLE & SL-BOCLE in the Tribology lab'''<br/>
−
[[Media:Example.ogg]]
+
[ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/BOCLE%20report2012.pdf PDF]<br/>
 +
[ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/New%20Folder/BOCLE%20report22012.doc MS WORD]

Latest revision as of 15:05, 9 December 2018

BOCLE(Left) & SL-BOCLE(Right)

Both the Ball On Cylinder Lubricity Evaluator (BOCLE) and the Scuffing Load - Ball On Cylinder Lubricity Evaluator (SL-BOCLE) work on the principle of testing the lubricity of a fuel/lubricant. A non-rotating ball is forced against a rotating cylinder. The cylinder is partially immersed in a bath of the fuel to allow the fuel to be constantly carried to the area of contact.

The BOCLE & SL-BOCLE machines operate on much the same principals. They are nearly identically constructed. They differ in:
1) The types of fuels they typically test.
2) The qualifying parameters and test methods (See ASTM link below).
3) The maximum load they can carry.

The BOCLE is a wear test. A microscope and camera is used to quantify the size of the wear scar and record the appearance.

The SL-BOCLE is a load carrying capacity test. A series of loads are applied until a sudden change in the friction coefficient is observed (higher than 0.175). This load is used to characterize the lubricity behaviour of the fluid.
Note:the suggested loading sequence is in the operating manual.

Ball,Ring & Bath


In this Table some basic differences are presented:


BOCLE table 2.jpg

Both units are operated via a simulink interfaces found on the PC next to the units (Univ PC nr: 766118).



Documentation

User Manual

A single user manual exists for both machines. click here

ASTM Standards

BOCLE (ASTM D5001) click here
SL-BOCLE (ASTM D6078) click here

MSDS of relevant Chemicals

Acetone click here
Isooctane click here
Isopropyl alcohol click here
Reference fuels (A&B) click here

Wiring, Flow & Instrumentation diagrams

Overall wiring diagram
BOCLE
PDF VISIO
SL-BOCLE
PDF VISIO


Detailed Opto wiring diagram
BOCLE
PDF VISIO
SL-BOCLE
PDF VISIO


Piping diagram (Air flow) Identical for both click here

History of this Equipment

The equipment was recieved from Sasol in 2012 after being used there for a period of time. The equipment was conntected to the OPTO 22 network in 2012 by Jacques Langenhoven to allow data logging and control through the lab network and OPTO system.

However after series of renovations in the Tribology lab over a space of 5 years (2012-2017), the instruments fell out of use. They became redundant and several parts and wiring were lost or no longer functional. In 2017 much work was done by Andrew Sakyi to reinstate both machines into good working conditions and communication to the OPTO system was established.

Current/Previous projects

In reverse chronological order

2018

Trinity Thobejane, Automation of the humidifier for the BOCLE and SL-BOCLE
Final report document

2017

Andrew Sakyi, Reconditioning of the SL-BOCLE and BOCLE Instrument.
Final Report document
Laboratory Report document

2012

Jacques Langenhoven, The commissioning of the BOCLE & SL-BOCLE in the Tribology lab
PDF
MS WORD

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