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Antarctic Ship Expedition
Icon Research are delighted to be supplying a “Doctor” analyser to monitor the engine performance of Britain’s new polar research vessel RRS Sir David Attenborough. The engine analyser will ensure the engineers will know the four main Bergen B33:45 engines are running correctly, efficiently and safely in the harsh environments the vessel will be deployed....
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As per previous case studies, a weakness in a particular cylinder compared to others can be identified as a leak. This note discusses how to identify what the source of the leak may be. In cases of slight leaks, it is often possible to diagnose what type of leak is present. A valve leak will...
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The Diesel Doctor can identify a number of different problems including cylinder leaks, incorrect timing, injector/pump issues, valve leaks, blow-by, poor power balance, restricted inlets and more. In the following example, high cylinder pressure variation was observed mainly due to cylinder 5; which exhibits low compression. Reasons for this could be valve leaks, tappet setting,...
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Compression starts once the air inlet phase finishes. Dependent on the type of engine, this happens differently. In 2-stroke engines, compression occurs when the inlet ports in the cylinder liner are closed by the piston. In a 4-stroke engine, compression occurs after the inlet valves have closed. Once compression starts, pressure and temperature both increase...
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The Diesel Doctor is used to ensure engines are performing efficiently, correctly and safely. By regularly carrying out engine tests changes in the engine’s operation can be identified and remedial action taken. It is also very useful to verify the results of any maintenance work made. In this example, the engine was due a service....
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At Icon we are privileged to view the engine test results our customers send us on a daily basis. Recently, we have received many messages from chief engineers who are puzzled by the shape of the pressure curves they are seeing. They look back to front! The reason for this is the engine timing has...
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IB Ymer is one a number of Icebreakers owned by the Swedish Maritime Administration under operational and technical management of Viking Supply Ships. She can generate a total power of around 19,000kW supplied by 5 Wartsila Pielstick 12PC2-2 V12 main engines. These engines have a common rail injection system on which the engineers can easily...
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ICON RESEARCH LTD Introduction Kistler combustion pressure sensors are precision measurement devices designed to cope with the high temperatures and thermal shock experienced in the hostile environment of diesel and gas engine cylinder monitoring. This application note discusses how to help protect the investment you have made in your sensors by taking steps to minimise possible damage...
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Why Monitor Four-Stroke Generator Engines?
The Benefits of Monitoring Large Engines All types of machinery require some form of maintenance schedule. Traditionally, routine maintenance has consisted of component replacement or a service after a set number of operating hours. This method is being replaced by analysing changes in a machine’s behaviour by monitoring physical parameters, to identify when maintenance is...
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Icon Research
My name is James (or Jim) Fraser – Product Manager at Icon Research. LinkedIn recently reminded me of my seven-year “work anniversary” … With that in mind, I thought now would be a good time to reflect on my last few years at Icon.   Joining Icon Previously, I’ve worked for huge companies consisting of...
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