CHSARANT
Marine/Ocean
- Feb 13, 2008
- 5
Dear all,
Recently we received a notice re future environmental legislation on fuel sulphur contents. Major engine maker suggests use of distillate fuels (MDO and or MGO).
Naturally this raises the question regarding viscosity control and lubricity of distillate fuels, since most engine makers place a lower viscosity limit of 2 cSt at engine inlet.
An MGO (DMA grade) with min. viscosity of 1.5 cSt at 40 C as per ISO8217:2005 will need cooling to abt. 22 C in order to get the min 2 cSt that maker is requiring and if for safety margin you choose to have 3 cSt at engine inlet, then fuel should be cooled at abt 2 C.
These temps can only be archived with a cooler and or refer plant, according to my understanding, which will complicate the engine fuel supply system.
Has anyone relevant experience and can offer some guidelines on above? Any ways to bypass the problem without modification of fuel supply system?
Also same fuel will have to be used of Aux. engines and Boilers. Any special considerations for these systems?
Thanks and best regards,
Never disagree with an idiot. He will bring you to his level and will beat you by experiance
Recently we received a notice re future environmental legislation on fuel sulphur contents. Major engine maker suggests use of distillate fuels (MDO and or MGO).
Naturally this raises the question regarding viscosity control and lubricity of distillate fuels, since most engine makers place a lower viscosity limit of 2 cSt at engine inlet.
An MGO (DMA grade) with min. viscosity of 1.5 cSt at 40 C as per ISO8217:2005 will need cooling to abt. 22 C in order to get the min 2 cSt that maker is requiring and if for safety margin you choose to have 3 cSt at engine inlet, then fuel should be cooled at abt 2 C.
These temps can only be archived with a cooler and or refer plant, according to my understanding, which will complicate the engine fuel supply system.
Has anyone relevant experience and can offer some guidelines on above? Any ways to bypass the problem without modification of fuel supply system?
Also same fuel will have to be used of Aux. engines and Boilers. Any special considerations for these systems?
Thanks and best regards,
Never disagree with an idiot. He will bring you to his level and will beat you by experiance