Diesel Engine Fuel Injectors
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Posted by: matin ® 06/17/2006, 13:35:48 Author Profile eMail author Edit

We have in our facility Wartsila SW 18 V 38 series engine running on heavy fuel at 18cST 450 bar injection pressure and using 11 hole nozzle we are experiencing a very strange problem.The nozzle gets choked and get blocks after a period of some days of operation as a result we get valve to valve difference high indication at exhaust and as a consequence we have to change the injector.The fuel is processed as per standard and it passes through a long series of filters but still the problems keeps on popping up.What could be the reason??????????????

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Re: Diesel Engine Fuel Injectors
Re: Diesel Engine Fuel Injectors -- matin	Post Reply	Top of thread	Forum

Posted by: matin ® 06/18/2006, 03:22:29 Author Profile eMail author Edit

Well the fuel does get prcoessed through centrifugal filters and the water content after centrifugal filter is between in the range of 0.2-0.25 percent.I will inquire about the micron size and would let you know

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Re: Re: Diesel Engine Fuel Injectors
Re: Re: Diesel Engine Fuel Injectors -- matin	Post Reply	Top of thread	Forum

Posted by: randykimball ® 06/18/2006, 17:18:55 Author Profile eMail author Edit

No need to let me know, they are not my units. What you do need to do is be sure the filter micron size is smaller than the nozel holes!! The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them.

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Re: Diesel Engine Fuel Injectors
Re: Diesel Engine Fuel Injectors -- matin	Post Reply	Top of thread	Forum

Posted by: randykimball ® 06/17/2006, 23:52:31 Author Profile eMail author Edit

Your fuel is filtered to what micro? Your piping is made of what material? I think either your pipes are depositing materials into your fuel or your filters are not fine micro enough. Are you putting your fuel through a centrifuge to remove foreign matter and moisture? Moisture in fuel can cause all kinds of wierd things to happen. The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them.

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