Marine Diesel Engine Cooling System
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- Опубликовано: 8 сен 2024
- Part two of a four part series about the marine diesel engine taken from the Corfu Sea School E-Learning centre. This video explains how the cooling system works. To learn more about all of the RYA courses we provide go to: www.corfuseaschool.com. Corfu Sea School is a RYA yacht training centre based in Corfu, Greece. We are the longest established school in the region and teach all of the RYA sail cruising, motor cruising and powerboat practical and theory courses, including Competent Crew, Day Skipper, Coastal Skipper and Yachtmaster. We provide practical courses from our marina base from April to October.
Learned a few things from these videos. Thank you for posting.
Wow the fuel and water system videos are great explanations!! Thank you!
Excellent series, thank you!
This is a good playlist and the first couple of videos are very clear and helpful, thanks. This video could be improved by explaining that some (mostly older) engines are raw water cooled, and that the heat exchanger and boiler systems vary in different boats. (Many boats use a separate diesel water heater which heats domestic water without engine use.) Cheers for sharing.
Really Helpful Thank you
These are great training videos!
Thank you so much.
Excellent overview, thanks 👍
Many thanks. Simple, concise and extremely well delivered. 😊🍀
The water boiler is heated using the distilled cooling water -- not the raw water and it is NOT dumped into the exhaust (it is circulated back into the distilled water cooling system which is a closed loop (there is no exit).
Surely the calorífer is using the hot coolant water from the fresh water system and not the raw water?
Good video
Understand that normally the calorifier / water heater is on the same circuit as the closed fresh water engine coolant rather than the, now warm raw seawater? The engine coolant being hotter / more effective and less prone to corrosion.
Lots of 💕
Very clear video! Thanks! Would you do ones with petrol engines? What about outboard engines?
Excellent video. Why to cool the exhaust gases that are thrown overboard? Will this not clog some condensable gases in tail /exhaust pipe?
I always thought tiny short circuits heat the boiler. Now it seams it was salt water all along... I will have to READ THE MANUAL again.
Please can somebody extend the raw water strainer, to micro-filter plastic from the oceans, 10% should be micro-strained, on each and every new marine engine, and eventually we can clean up. I can think of no other way, and it will work....eventually. The plastic is now so small, and ingested by all sea life. This is an idea I had, so take it on somebody, and make a fortune if you want, if the by-product is an earth fit for my descendants. pax and gratis.
Why don’t they use the same cooling System like cars’. In stead of the fan that blows away the heat from the radiator, just put the radiator down the seawater. The whole system can use coolant to avoid rubbish or dust.
Hi, good thought. However, the radiator in the water would cause drag and would not last long in salt water which is highly corrosive. It would also cause problems with maintenance as it would become hard to get at.
What is this !? Are you sure the raw water goes through the boiler and then to the wet exhaust !? I don't think its good. If RYA teaches this I will think twice if I would do it or not :)
This is how my system works. Hot water is available out of my faucets after approx 30 mins of engine usage. The water can also be heated via AC shore power.
Why dont they locate the Radiator deep in the sea so the coolant will be always cool.
Hi Nam Le, the reason radiators beneath the boat are not used is that they would create drag as the boat moves through the water and therefore create higher fuel consumption.
NOW NOW NOW ! Your video may be completely misleading. In the Yanmar motor you are using for your demonstration which appears indistuinguishable from mine you appear to have removed the starter motor so access to the Impeller is made to appear far easier than it actually is and removing the starter motor is not something I would like to undertake.
I would warn anyone against casually believing that they can easily change the impeller . On my Yanmar it is fiendishly difficult to get at .
I agree Bill, they are difficult to get at on Yanmars! The aim here, however, is to give an overview of what's involved. Every engine will have its own foibles. Thanks for taking the time to comment.