Difference between revisions of "T02 Optimol SRV Machine"

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(Created page with 'The BICERI Universal Wear-testing Machine in the Tribology Lab Dr Terry Eyre from Brunel University in the UK developed a multi-function...')
 
(Test Procedure)
 
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[[File:BICERI_UWM.JPG|500px|right|thumb|The BICERI Universal Wear-testing Machine in the Tribology Lab]]
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[[File:SRV1.JPG|500px|right|thumb|The SRV Machine in the Tribology Lab]]
Dr Terry Eyre from Brunel University in the UK developed a multi-functional wear-testing machine and the British Internal Combustion Engine Research Institute (BICERI) distributed it. It was called the “BICERI Universal Wear-testing Machine”. The machine is multi-functional in that it incorporates three different wear contact regimes, mentioned below:
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The SRV apparatus (German acronym for oscillation, friction and wear) is a 1986 model that was donated to the University of Pretoria in 1987. The machine traditionally tests the lubricating properties of oils and greases, but at the University of Pretoria it is used to test diesel lubricity together with the HFRR. The machine measures the load carrying capacity (LCC) of a certain fluid by measuring when film break though occurs. The machine utilizes a ball-on-disk configuration and can be operated in one of two conditions:
 
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* A constant load test (like the HFRR); and  
* Pin-on-reciprocating plate module;
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* An increasing load test where the load increases @ 50N/min.
* Rotating pin-on-disk module; and  
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* Block-on-ring module.
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Each of these wear contact regimes could be studied by a configuration of the hardware provided.
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More than 10 years ago Sasol purchased a Universal Wear Machine from BICERI, wanting to utilize its diversity. Unfortunately this was right around the time that BICERI went bankrupt. Sasol received the machine, but it could never be fully commissioned due to faulty software. The machine was donated to the University of Pretoria a few years ago and was commissioned in 2009 as a CML project.
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There is no ASTM or ISO standard for testing diesel fuel with the SRV but the "in-house" test developed for testing diesel utilizes conditions that are closer to that of modern engines, when compared to the HFRR.
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== Current/Previous projects ==
 
== Current/Previous projects ==
  
=== 2009 (Current) ===
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=== 2007  ===
Gerhard Marais, '''Commissioning of the BICERI Universal Wear Machine'''<br/>
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Petri Labuschagne, '''Upgrade of the SRV test equipment'''<br/>
[http://ragnarok.up.ac.za/Tribology/BICERI_UWM/BICERI%20UWM-files%20(2009)/CML732%20Report%20(BICERI).pdf Report] | [http://ragnarok.up.ac.za/Tribology/BICERI_UWM/BICERI%20UWM-files%20(2009)/ Project files]
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[ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/SRV/2007/CLBReport.pdf Report] | [ftp://ragnarok.up.ac.za/publicftp/lab/Tribology/SRV/2007/ Project files]
  
 
== Documentation ==
 
== Documentation ==
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=== User Manuals ===
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The SRV Operation Manual can be found [ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/SRV/SRV%20Operating%20Manual.pdf here]
  
 
=== Wiring diagrams ===
 
=== Wiring diagrams ===
The machine's wiring diagram is included in the BICERI UWM-file. It was drawn by hand due to the unavailability of wiring diagram from BICERI. The file contains the wiring diagram of the junction box.
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A scan of the SRV wiring diagram can be found [ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/SRV/SRV_Bedradingsdiagram.pdf here]
[http://ragnarok.up.ac.za/Rigs/02_pH/02pH_WiringDiagram_2009.vsd .VSD (Visio)] | [http://ragnarok.up.ac.za/Rigs/02_pH/02pH_WiringDiagram_2009.pdf .PDF]
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== Test Procedure ==
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=== The SRV Open Gear Lubricants Procedure ===
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Download the [ftp://anonymous@ragnarok.up.ac.za/publicftp/lab/Tribology/SRV/34_Testing_wear_on_the_Optimol_SRV_Test_System_pdf_%20SRV%20DIESEL%20LUBRICITY%20TEST%20DESCRIPTION_pdf_%20SRVbalgprent_doc_%20D5706_SRV%20EP__PDF_%20D5707_SRV%20Friction%20Folder/BE%40UP%20Tribology%20lab%20Test%20Descriptions%28SRV%20OGP%29.pdf SRV OGP Test Description]
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The SRV test procedure for open gear lubricants (SRV OGP Procedure) is intended as a screening test for the performance of open gear lubricants. A load test as well as a friction and wear test is performed at three temperatures, namely 25, 55 and 80°C. A ring is fitted around the top specimen and filled with grease, prior to the onset of the test, so as to ensure that the surfaces in contact are always replenished with lubricant and no starvation occurs, as might be the case when higher- consistency greases are tested without a ring.
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=== SRV Diesel Test Procedure ===

Latest revision as of 15:35, 26 July 2010

The SRV Machine in the Tribology Lab

The SRV apparatus (German acronym for oscillation, friction and wear) is a 1986 model that was donated to the University of Pretoria in 1987. The machine traditionally tests the lubricating properties of oils and greases, but at the University of Pretoria it is used to test diesel lubricity together with the HFRR. The machine measures the load carrying capacity (LCC) of a certain fluid by measuring when film break though occurs. The machine utilizes a ball-on-disk configuration and can be operated in one of two conditions:

  • A constant load test (like the HFRR); and
  • An increasing load test where the load increases @ 50N/min.

There is no ASTM or ISO standard for testing diesel fuel with the SRV but the "in-house" test developed for testing diesel utilizes conditions that are closer to that of modern engines, when compared to the HFRR.

Current/Previous projects

2007

Petri Labuschagne, Upgrade of the SRV test equipment
Report | Project files

Documentation

User Manuals

The SRV Operation Manual can be found here

Wiring diagrams

A scan of the SRV wiring diagram can be found here

Test Procedure

The SRV Open Gear Lubricants Procedure

Download the SRV OGP Test Description

The SRV test procedure for open gear lubricants (SRV OGP Procedure) is intended as a screening test for the performance of open gear lubricants. A load test as well as a friction and wear test is performed at three temperatures, namely 25, 55 and 80°C. A ring is fitted around the top specimen and filled with grease, prior to the onset of the test, so as to ensure that the surfaces in contact are always replenished with lubricant and no starvation occurs, as might be the case when higher- consistency greases are tested without a ring.

SRV Diesel Test Procedure