For anyone wondering, 9068 HP at 81 RPM is roughly 587,974 ft*lb of torque. That big number is not a typo. Thanks Chief!
@evanleo76332 жыл бұрын
That’s actually not a lot of HP is ship term, some ships have over 200k horsepower
@InsanePacoTaco2 жыл бұрын
@@evanleo7633 yeah, but I think that since this ship is a direct drive, the torque is more important than horsepower?
@chrismarek78642 жыл бұрын
And so far the most powerful TSDICE I’ve ever heard of used in freighters is the Wartsila Sultzer RTA96-4C. The 14 cylinder variant makes about 109,000 HP and 5.6 million lb ft of torque at just 102 RPM. That engine is bigger than the three story house I grew up in!
@annaplojharova14002 жыл бұрын
@@InsanePacoTaco Not that much. For the same power you may have lower rpm and higher torque engine, but that would then require for the same speed steeper propeller blade pitch angle, so (assume the losses as the same) the resulting thrust force would be exactly the same. Actually co paring the torque is irrelevant, even for a car dynamics, unless you have other parameters (rpm range, inertia of the flywheel,...) aligned as well (well when speaking only about gas car engines, the physics around gas combustion is what leads to the other design parameters to be alike so comparing torque figures does make sense there; but comparing torque figures between gas vs electric makes no sense at all). Otherwise what matters is the power as function of where you are in the rpm range, plus how much inertia energy is in the moving engine mass. For different torque and rpm you will compensate by just a different gearing.
@InsanePacoTaco2 жыл бұрын
@@annaplojharova1400 interesting! Thanks for the reply
@k20nutz2 жыл бұрын
I love that you show your guys in full safety gear being deliberate and cautious. Workers acting cool and nonchalant without safety gear sets a bad precedent.
@dansgamepogchamp13542 жыл бұрын
It's required to be in full PPE while working onboard. No PPE no insurance for you when some accidents happens to you.
@TheEvertw2 жыл бұрын
I wondered why a face shield would be required until he opened up that test valve...
@Wolfhound_81 Жыл бұрын
@@TheEvertw My guess would be the high pressure that comes out of that piston tube, you saw it in the calcs how high it was, if that blows into your eye, you might be blind.
@charliepearce87672 жыл бұрын
There's a lot more going on in everyday life than a lot of people realise and give credit for. Many go throughout their lives without understanding or giving a 2nd thought what makes the wheels turn thusly making their lives easier. Just the simple nut and bolt that holds our lives together is a magical thing.
@cheif10thumbs2 жыл бұрын
As someone that has had to repair such instruments I appreciate the care the engine room tech is taking with the cable connectors. Those things are NOT cheap and unless you have spares? Not something you want broken while underway!
@geddon4362 жыл бұрын
how often are the engine check calibrations done?
@azlanbinismail2 жыл бұрын
Once a month.
@kilianortmann99792 жыл бұрын
It boggles my mind that you guys just have, like a 3/8 in?, valve directly into the combustion chamber. That puts the scale of these engines even more into perspective. I'm always looking forward to your more in depth technical videos, AFAIK no one else makes this sort of video. Also maybe cylinder five needs a bit of a hug and some encouraging talk.
@steve1978ger2 жыл бұрын
Surprising to me, too. Isn't there, like, an explosion in there?! I guess these huge engines work at much lower pressures than, say, a car engine?
@stevenmiller28372 жыл бұрын
Thanks Chief! As a Deck officer, I have participated in many, many performance tests and never really knew what was going on below.
@jp-um2fr2 жыл бұрын
I never thought I would see one again or a planometer - thanks Chief.
@jp-um2fr2 жыл бұрын
Dobson and Mcguinness indicator if I remember correctly from over 50 years ago. There was one on a single cylinder diesel engine at Guildford College of Technology. Bits of sting and paper allover the place but it worked. Probably before you were born chief. We tied a bit of string around the govenor, apprentices will be apprentices. It was on the second floor. Thank God we managed to cut the string in time or it would have been on the first floor.
@charliepearce87672 жыл бұрын
Can you tell me Do these motors run with a dry sump ?
@benjurqunov2 жыл бұрын
@@charliepearce8767 Yes. Dry sump motors.
@hastuart96394 ай бұрын
@@charliepearce8767No, the sump is part of the ships structure and underneath the engine. Oil pumps are large motor driven affairs located at the after end of the engine as ships tend to trim by tbe stern, so the oil is deepest there. Its still possible to loose suction on the oil pump if rolling badly, which will start to shut the engine down, but you roll the other way and oil pressure is restored. This can be reduced by adding more oil to the sump. You have suction filters to protect the pumps and much finer discharge filters to protect the engine, much the same as a car engine. You also continuously centrifuge the oil through a purifier to remove water and solids, but usually water, due to condensation, leaks from water cooled pistons if still fitted. Any liner leaks usualy appear through the scavenge drains on two strokes. To have a dry sump means the sump has to be higher than the engine and this has an effect on stability and more pumps. The bottom of the crankcase is dry as you have to stand in it to carry out certain inspections and overhauls, but below the steel you are standing on will be the ME Lube oil sump. There are a couple of mesh covered drains into the sump from the bottom of the crankcase, one forward and one aft usualy.
@charliepearce87674 ай бұрын
@@hastuart9639 Thanks for the info.
@markfeagans96792 жыл бұрын
And yet another great video! I never thought about how engine power output is measured on a cargo vessel. Thanks for the great class session, Chief.
@Joakri82 жыл бұрын
Your videos are very informative, I really like watching them. Best regards from a Norwegian Marine Engineer 😊
@jameslanning84052 жыл бұрын
Very good Chief. I enjoyed the details of the 'how to.' Being far out to sea, is reason enough to know that your power plant will get you safely to the next port.
@sohailnomani2 жыл бұрын
I remember, we used the old device. The device was kept secret by Chief and 2nd Engineer and test were carried out by Chief engineer or 2nd engineer along with Diesel Mechanic when the juniors were out of Engine room. However, when I became 2nd Engineer, I allowed all my engineers especially the Junior Engineers and 5th/4th Engineer to take measurements when ever the weather was calm. Those black sheep Chief and 2nd Engineers and Diesel Mechanics are now in grave or death beds.
@rherman90852 жыл бұрын
Neat info. Why did they keep it secret? Were they afraid for their jobs?
@sohailnomani2 жыл бұрын
@@rherman9085 They don't want that the juniors learn the use of the device/ trick of the trade. The owners should call them for their ships regularly. No other person are employed on that vessel
@rherman90852 жыл бұрын
@@sohailnomani I kind of figured that. Hey thanks for the reply & the info. Though I am learning (for the fun of it), kind of cool things to hear about. Thank you!
@benjurqunov2 жыл бұрын
Every trade has those type of guys. ”I know something you don’t know”... Makes me more valuable.
@sohailnomani2 жыл бұрын
@@benjurqunov yes. We called them Commodore 3rd Engineer ( they were in every rank ) who used to hide every tool from juniors. Who used to send juniors to search for tools when they were making some adjustment ( tools were in their own pockets) so that the juniors don't learn any technique.
@marksaunders25002 жыл бұрын
Hi from uk Chief MAKOiand crews👋👍 thanks for these on board activity and maintenance schedule routines 👌 really appreciate you taking time for us on board and thanks to for crews patience when they surely just want to get job done👍 it amazes me how times change but the technology stays the same its just advance thru computers instead of manual input👍 thanks for your time and be safe see you soon👍👋
@tomrogers94672 жыл бұрын
Fascinating. I was surprised at the apparently small difference between the compression pressure max. and the combustion pressure max. I would have expected a much higher differential. Then again the intake air is supercharged, so it’s already under more pressure than ambient. (I was a small engine mechanic, so this is the other side of the universe for me!)
@sstoharczyk41632 жыл бұрын
I wonder what max pressure is at 120% power, since that graph showed it at 80% or 90% power.
@Airman..2 жыл бұрын
That's a Diesel thing
@ikocheratcr2 жыл бұрын
The diff between min and max you see is normal for ICE, no matter the fuel. Also note that the peak pressure occurs at around 20~25 degrees, that is around 30cm from TDC, while the pressure before combustion is at TDC.
@rexmyers9912 жыл бұрын
Gosh, Chief, this brought back memories of when I taught engine theory at an aircraft mechanics school. We used PLANK as our formula. This was for radial aircraft engines as used during WWII. I’m 80 years old now so,that was a long time ago. Great explanation! Thanks, Chief
@barrygoffe2 жыл бұрын
Love your more technical videos like this one. Thanks for making such fantastic content!
@jonathanhernandez43048 ай бұрын
Chief, Makoi, I'm a Machinist who loves my career even though as a child I wanted to be a Chief Engineer on a cargo ship. Well, life happens and I have no regrets. Thank you for your channel and your commitment to quality and training. I support all working young men in trades. They are all under-appreciated in my view. Tell them for this viewer that I thank them for their hard work. Maybe there's a little pizza money for them in this gift. Thanks again Chief and crew!!!
@ChiefMAKOi8 ай бұрын
Thank you so much Jonathan! Merry Christmas!
@jonathanhernandez43048 ай бұрын
@@ChiefMAKOi Merry Christmas Chief!
@Richardincancale2 жыл бұрын
That was very interesting! Especially liked the old ‘analogue’ tools using recording paper and the planimeter - never seen one before - I was wondering if you’d have to count little squares on the paper to get the area!
@petermaddison41362 жыл бұрын
Yes you do and average all the halves and quarters
@beeble20032 жыл бұрын
@@petermaddison4136 No, you use the planimeter -- it's a device for calculating areas.
@AAAyyyGGG2 жыл бұрын
Very nice, I enjoyed watching this, thank you! I've always been fascinated by marine engines, the bigger the better, and when I was in my teens I had a cross-section of a MAN marine engine poster on my wall, while my classmates had photos of girls in various states of undress!! 😅
@ANONIE472 жыл бұрын
Haha 😀 !
@bostedtap83992 жыл бұрын
Very very interesting, excellent explanation on measuring engine performance, great to see the analogue instrument as well, brilliant. Thanks for sharing.
@congt9288 Жыл бұрын
Having been a marine engineer for many years - it is great to see all the wonderful equipment you have these days to do a professional job. I remember the old indicator very well. Nice to see it used. Bought back some memories.
@larryoloane75792 жыл бұрын
Excellent video Chief! It's worth mentioning that when coordinating with the bridge for the test, request that they turn off the fire detection loop in the ER. Failure to do so will insure that after a couple of shots out of the open indicator cocks the fire alarm will sound and that anybody trying to sleep will be scrambling out of their rack and heading for their muster station 🤣
@McTroyd2 жыл бұрын
Voice of experience? 🤔😉
@larryoloane75792 жыл бұрын
@@McTroyd Yup 😁
@richardhanson86472 жыл бұрын
Missing your updates. I check this site several times a week. Hope to hear from you soon. USN--MM3 Qualified 1200 # steam and auxiliaries and carry a MN steam engineer's license. It so cool to see the advances in engineering since I steamed the open seas, years ago.
@edwardanderson15622 жыл бұрын
As all the comments I read say, " another great video". The tech yes, but the calm, and precision add to the overall impact. Everything I know about your work comes from this channel. Thank you. I am a retired engineer in a completely different field. So now my minutiae. When coiling test cables, or any cables, using the over/ under method results in no loops or kinks. This is often remembered by saying " over worked / under paid." Lastly, when working with large heavy cables, making a figure 8 on the deck, then picking up the ends, folding together, gives the same results. Thank you again Chief!
@anttiroppola44142 жыл бұрын
That was a fascinating video. Ships and physics.
@intellectualiconoclasm32642 жыл бұрын
I'm a radio and satcome opperator and maintainer and I saw a phase diagram in the graph. Then I thought about it and it really is, just a mechanical phased array. I love how interchangeable these conscripts are, and I GREATLY appreciate how your videos are helping me learn. Thanks Chief.
@Benson_aka_devils_advocate_882 жыл бұрын
Good day, Chief! May fair weather and calm seas bless your journeys!
@JoeyPinter2 жыл бұрын
watching this tells me that you can probably know all the equations and calculations off the top of your head. very impressive indeed.
@hastuart96394 ай бұрын
In old money, it was P.L.A.N/ 33,000 but with metrication and the right units the 33,000 was removed from the equation. 33,000 was foot pounds in a Horse Power. Note this is Indicated Horse power IHP, the actual raw power produced in each cylinder. At the propellor shaft you have shaft horse power which takes into consideration all the frictional losses by the time it gets there. You can also work out the Brake Thermal Efficiency which starts with Calorific Value of the fuel burnt, IHP then you have all the losses, friction, heat lost to cooling water, exhaust gas, lube oil etc. Some of these losses are recouped via the turbo charger providing scavenge air pressure, waste heat boilers to produce steam for domestic and fuel heating but even on large ships they produce enough exhaust gas to produce steam to drive a turbo alternator for electrical power supplies. Cylinder Cooling water is used in a vacuum evaporator to boil sea water at approximately 60°C to produce distilled water for domestic use and ER use. Apart from a small vacuum pump and freshwater discharge pump very little power is used to,produce the fresh water.
@KOJAY2 жыл бұрын
I learn a lot with yours videos. Thanks for all of this. When i finish my studies and will be 3 officer engenier i will send you a big donation.
@alainaarrhodge59002 жыл бұрын
I'll keep my med math thanks. Thank you for keeping the world moving Chief!
@mgv002 жыл бұрын
Great explanation. I loved seeing the old school and modern way of figuring this out.
@FreddieExPath2 жыл бұрын
I wish my dad was still alive 😢. As merchant sailor & engineer during the late 1940s and early 1950s I think he would have found this interesting to watch. Still have one of his textbooks from his days at the ship engineers school/course. It's thicker than a bible 🙂.
@robertwilliams26232 жыл бұрын
Been watching your videos for awhile now and love them. Wish when i was young i got in to your kind of work thanks
@md.arifuzzamansourav5041 Жыл бұрын
Thanks a lot, Chief. This content is very helpful. Need more discussion of purpose of the angle encoder connection, Frequency divider box & junction box.
@kerravon41592 жыл бұрын
Great informative video, its amazing how much quicker and more accurate the computer makes the measurement.
@robertbinkley21702 жыл бұрын
Chief, I really enjoy your videos. Being a diesel mechanic since the early '70s I especially enjoy the engine videos. Since I worked mostly on heavy equipment and trucks I always learn something from your content. Today I learned that Pi r squared (sorry I don't have a fancy scientific keyboard ) can be represented as Pi (D) squared/4. I remember the needle and paper days. I always kept learning the new technology and am still a viable commodity today. I watched your video about how you went back to the academy to learn electronic engines. That was a great move. I have spent a lot of time in school over my career and never regretted it. I tell the young'uns keep up or get left on the side of the road. Or left in port in your case. Keep up the good work, I dig it. Thanks, Robert
@user-dw5lg7ns8s Жыл бұрын
Спасибо, многое подчеркнул для себя как 3й механик!
@gdawgpwnsall2 жыл бұрын
I really appreciate you doing the dimensional analysis on it first so that the units are clear!
@mattc.3102 жыл бұрын
Pretty cool Chief. There's a lot to keep track of on board.
@senpaimeow24502 жыл бұрын
Thanks chief MAKOI I've been watching all your videos and its really a big help for my future I'm currently a second year marine engineering student thanks for sharing your amazing experience and teachings i hope someday i will be like you so i can also share my knowledge to others thanks chief you're my inspiration.
@SeanBZA2 жыл бұрын
Yes engine power and efficiency directly impact the biggest cost of running the ship, fuel use. You definitely want your engine to be running at the absolute best efficiency while at sea, so as to keep that fuel consumption down to the minimum.
@tomrogers94672 жыл бұрын
Just imagine how much more critical that is in today’s insane world!
@lawoftheuniverse80892 жыл бұрын
You Always Have The Coolest Videos Chief...I always look forward to them...!!!
@136991112 жыл бұрын
Thank you for posting videos Chief Makoi I've enjoyed every interesting informative video.
@paullandreville5394 Жыл бұрын
Always enjoy your videos Chief. Thank you.
@Pamudder2 жыл бұрын
As an engine room volunteer aboard the museum ship Liberty-ship class SS JOHN W BROWN, powered by a 2500 ihp triple-expansion reciprocating steam engine, I am amazed at the number of things that have carried over from reciprocating steam engines to diesel engines. The manual method you show for measuring cylinder pressure and converting that measurement to horsepower is almost exactly the same as that used on steam engines. Similarly, the crosshead guides, connecting rods and crank webs you showed in your video a few days ago are also almost identical to those on a reciprocating steam engine-- except that in most steam engines all this machinery was out in the open and you checked the temperature and degree of lubrication of the connecting rod bearings by touching them, while keeping your hands as far away as possible from the rotating crank webs.
@awolslaboratory13882 жыл бұрын
Hello everyone! So I've never been on a ship or ever worked on an engine of this scale. However, I know Diesel through and through. Both the analog and digital techniques make entirely too much sense to me. This is amazing. Thank you for another great video Chief. Kudos. Keep doing what you do. Stay away from the hamburger pump when taking measurements. Be safe. Be well. Good day!
@skun4062 жыл бұрын
The measurement guy was calm and focused, I liked that.
@timothyball31442 жыл бұрын
Another fascinating (to me) video about something that I will never deal with. Thank you.
@jerremm2 жыл бұрын
Excellent! Perfect with the units and everything. Such a breath of fresh air to see a video not use pounds, feet, bananas per football field, etc.
@icare7151 Жыл бұрын
Thank you for the awesome education and incredible video!
@ke6gwf2 жыл бұрын
I have gotten to run some smaller scale ancient ship diesel engines in a museum setting, and though many years have passed, and the scale is far different, they really are very similar! I would rather use the digital gauge, but I love the fiddly old gauge! Lol
@lardo6662 жыл бұрын
But the analog gauge is mechanics you can mend at sea. If a digital pressure sensor fails, that's it, and some sealed cables are close to non-repairable. Have the old backup, and someone young who knows how to use it, and you can measure when you have a problem (which will be when the superior digital stuff decides to misbehave!)
@nmccw32452 жыл бұрын
Chief just popped his ship up on the Dyno - figuratively. 😎👍🏻
@BilgeDweller2 жыл бұрын
When we were having other problems, we had a consulting engineer out to ride with us. Rob used strain gauges on each shaft and found that we were actually generating 4,200 hp (3132 kw) per shaft, instead of our rated output of 4,000 hp (2983 kw). Interesting approach here, we used Kiene indicators to measure MEP in each cylinder.
@memetemplates3822 жыл бұрын
You are brilliant Sir. Hope I will get a job under you/ like you sir!💓
@Shade_Tree_Mechanic2 жыл бұрын
I work on cars and it was extremely interesting to learn about this. Thanks for the awesome informative video Chief!
@SteveMikre442 жыл бұрын
Thank you for all you hard work in creating great episodes. I throughly enjoy each one...
@ChiefMAKOi2 жыл бұрын
Thanks Steve!
@toddfraisure17472 жыл бұрын
Greetings Chief, It makes my morning to sit down with a cup of Jo and see that you put up another video. Put four wheels under those bad boys and you've got one hell of a scooter
@andyharman30224 ай бұрын
This is cool stuff. Measuring cylinder pressure and calculating power from the data gives Indicated Power, not Brake Power. To measure Brake Power, there would need to be a torquemeter on the prop shaft and a measurement of engine speed.
@pamelaclayton75352 жыл бұрын
I am a 70 year old granny and I love watching your videos. You make them so interesting. One question do you have a dishwasher machine on board or does the steward have to wash all those dishes by hand!
@ChiefMAKOi2 жыл бұрын
Most ships don't have dishwashing machines.
@rherman90852 жыл бұрын
Hey thanks Cheif. Really cool showing both ways, old school & modern.
@TheEvertw2 жыл бұрын
Excellent video! Fascinating to see the care that goes into running such a beast properly. And, yes, I am an (EE) engineer, so I do understand what you are doing.
@paolocanali33612 жыл бұрын
You need to teach your cadet how to properly coil and store the cable to avoid the tangled mess and the struggle I see on the video. Search for the "over under" method. They never teach this at school, and it is one of the first thing I explain to them. If they coil the cable like a rope, as untrained people usually do, they impart a twist at every turn. Long and stiff digital cables have a internal structure that behaves like a spring. Tension is stored on the cable; it will then uncoil in a messy way at the next use. After a few mishandling, the cable looks like 4:21. Digital signal attenuation will rise due to the shifting and twisting of the complex internal cable structure, and after a while the cable may ultimately fail and/or become impossible to coil in a orderly fashion due to external sheating damage/deformation. That's a shame, because cables are expensive and should last a long time when properly handled. I work in a completely different industry, but I see that some practical issues are the same.
@slots14072 жыл бұрын
Guessing you work in the sound engineering field?
@henrylombard19652 жыл бұрын
I second this. I’m in the robotics and automation field and I’d venture a guess that 3/4 of the problems we see are cable related. Seriously, cables need to be treated very well.
@victorcarter57542 жыл бұрын
Always find your videos interesting and informative especially the 'how it's done' variety and particularly this one. Thank you
@peterlewis72922 жыл бұрын
Smashing and thank you very much. I was keeping up with you on PLAn until you started talking metric 😁🤣. So glad when you then gave us the answer as "Indicated Horsepower" Rgds. Peter
@codo72 жыл бұрын
Thank you, Chief.
@TechOne76712 жыл бұрын
Superb chief. Another fascinating video.
@CarmineTavernaPhotography2 жыл бұрын
Good morning CHIEF, A fire has erupted in the funnel of an occupied Carnival cruise ship while docked at Turks. This just occurred recently. What, in your opinion causes a raging funnel fire. I watched as the crew used on board fire lines, the water spray was at least 15 feet short of hitting the flaming funnel, no injuries reported at this time. Peace always.
@perksmaticschannel42922 жыл бұрын
thank you so much chief for this very informative video you shared.❤️
@guymcmullan92972 жыл бұрын
I welded at sparrows point MD,on a vost Alpine,ship, people don't often consider the ship bowe is constructed up side down,boiler shop,
@ccrider53982 жыл бұрын
nicely done. I hope that all your apprentice engineers watch your videos!!!
@toolbox-gua2 жыл бұрын
Hola Chief Makoi. My side is on land, but ships have always got my attention. This was a very interesting and educational video. Thank you and take care.
@nicholasvanorton78402 жыл бұрын
The Chief has been busy they got a new dishwasher on the ship. I just wish he'd post a video of it.
@dtiydr Жыл бұрын
Holy shit, 1MW for ONE cylinder!! That is insane, never thought it was that much.
@lrq79272 жыл бұрын
Thanks Chief! Big numbers, BIG horse power.
@gizmothewytchdoktor Жыл бұрын
ok. that is impressive! the method used is so straightforward. also impressive as the numbers don't lie. at tested rpm though i wonder of increases in engine speed will change the rated output in actuality due to the time decrease involved in completing each combustion cycle. twisted minds want to know :-). i find these vids very informative and they do tend to set my mind to wander in regards to the interactions of the equipment and personnel onboard.
@gardnep2 жыл бұрын
Great tutorial, Chief. Thanks
@jobkapal55642 жыл бұрын
Nice explanation and perfect narration chieff. 👍👍🙏🙏🙏
@benjurqunov2 жыл бұрын
Hej Chief ! Thanks for the lesson. I’ve seen that thing before, but didn’t realise a string advanced the paper. Thank goodness for electronics ! Btw, Your vessels are impressively clean and tidy.
@drlegendre2 жыл бұрын
MAN - Back when, they made a very nice line of u-boat engines as well. Top-notch German quality.
@mikemaccracken31122 жыл бұрын
Excellent video Chief!
@loscheninmotion99202 жыл бұрын
Seeing the manual measurement tool in action blew my mind
@stevengill17362 жыл бұрын
What I'm amazed at how relatively quiet those big engines are! Much quieter than the old marine diesels. Those old analog indicators are amazing also.... I suppose you could extend those calculations into how much energy is theoretically available per unit of fuel, how much of that goes away as heat, and how much as work in gallons/mile or however you want to express it.....neat. (and no doubt the variables include grade of fuel in use, temperature of the water, etc...)
@karimlazar37132 жыл бұрын
Thanks for doing and uploading an interesting and informativ video. Fun to see that tools for measuring has evolved a bit since I was at sea last time. Greetings from Sweden //Karim (worked as motorman when I was at sea)
@jimsvideos72012 жыл бұрын
Neat! I figured fluid temperatures and pressures would be monitored, but this is news to me.
@chrispeoples46062 жыл бұрын
Cool video Chief, I hope to use it in my physics classes when I teach cyclic engine process for thermodynamics to show how the area of the pc diagram is computed.
@jaycal19202 жыл бұрын
Hey Boss..ahh..Cheif...I was telling a channel from "dangerous catch" Alaskan sea crab...yeah you know the one.... they can put heating elements in the rails and under the deck and one guy says "that would take too much power" as though he was going to run it off his 4 cyclinder car... the video was of how a $3Million boat accumulated ice and started listing into the side of the wind and when they turned into the wind to head to land and that little bit the wind was holding them upright stopped and it capsized.... it makes sence that the side the wind was on accumulated the ice, and the wind pushed it upright...
@annaplojharova14002 жыл бұрын
I'm surprised, a modern, digitally controlled engine does not have this kind of instrumentation (the cylinder pressure transducers, even direct torque sensors on the shaft,...) already installed permanently on them with all this monitoring happening continuously, so you still have to manually connect a separate meter on each cylinder to do this. I would expect such instrumentation should be way cheaper than letting a fault to cause more extensive damage because it gets undetected for up to a month. Plus there could be a fault presenting itself as an abnormality only under certain special condition (like the engine warming up or so), so here may slip undetected altogether...
@kiwiguy47062 жыл бұрын
Surprised me too, it's got less sensors on it than a 20yr old japanese car, in fact even my 1982 motorbike has a self diagnostic computer 🤔
@tardusmerula61022 жыл бұрын
At a large wastewater treatment plant we have several on line instruments, but we still perform a lot of manual tests on the rotating machinery,. This makes operators evaluate machinery performance by actually standing next to the machine, inspecting the installations, by listening and feeling...and keeps operators writing PAPER logs! At walk-around I very often assess the pumps or piping vibration by placing a coin to an appropriate location. It should stay there for a long time. We have a competition going on that one.
@redmarbos2 жыл бұрын
It is clear that you do not understand the operating conditions on these engines: - sensors in the combustion chamber foul, and need periodical calibration leading to an extra job to be done when the engine is out of operation while this manual job is just a 1 hour job during running of the engine while in transit. - these sensors are not cheap, i know of man b&w, who quoted such a permanently installed system, at approx 300000€ per engine for an 8 cyl marine diesel. - most of the times, these engines run at a continuous load, meaning it is not really important if a fault is present at low power outputs, as long as the 'normal' operating parameters are OK. Thats how it works in practice. I know in theory its like 'yeh you have a misfire at 10% load on a cylinder because of a bad injector or fuel rack mismatch' but really i dont care as long as when the engine is at nominal load, the cylinder does its thing. Greets, A marine engineer.
@annaplojharova14002 жыл бұрын
@@redmarbos Indeed, I do not know about the details of these big commercial marine engines, that is why I asked. I was just making some extrapolations from my experience with way smaller machines, in order to trigger a bit more detailed response. With the "defect presenting only at certain conditions" I did not actually mean a defect that is stable and affecting just those conditions, but a defect/fault which uses to end up in quite expensive carnage (e.g. when a valve breaks into pieces and these falls into cylinder, getting jammed between the piston and the head), but which in their initial stages cause shifts observable only in those abnormal conditions (e.g. a crack started in the valve, causing initially just a small leak, visible only during low rpm when there is plenty of time to lose enough pressure to show on the meter; then just replacing the valve will prevent the collision carnage from happening). But as I said, I do not know any details about real world operation, so e.g. how frequent are such defects, or so.
@redmarbos2 жыл бұрын
@@annaplojharova1400 ah okay, now it is clear. These failures very rarely happen out of nowhere. Marine diesel engines are built on a different spec than consumer grade engines. When a cylinder head reaches a certain amount of running hours, it will be replaced, and sent to a service shop where they will inspect and restore it to its new-like state. This is not something that is regularly done on consumer grade engines as far as i know, which in turn leads to sometimes catastrophic failures in these engines.
@warrenjones7442 жыл бұрын
Excellent presentation Chief. The engine makes a bit of power eh? Compared to the construction machinery I work with that's a whole lot of power! For an old engine guy like me, it's great fun to get a glimpse of a world that I don't get to see. Thank you and Cheers.
@tissuepaper99622 жыл бұрын
9068 HP at 81 RPM is 587,972 lb.ft. of torque. That thing is an absolute beast.
@scottmarshall67662 жыл бұрын
Interesting stuff. I wonder if the newest ships are using full electronic engine management? If so you would have (the ability at least) of a real time display of all the data and calculations. You would also have the ability to tune for maximum effeciency based on condition and do automatic fuel change overs when required. (it could even hook to the GPS to indicate or automate the change as you are approaching a fuel change zone. Thanks for the tech look, These videos are great for those in land based industrial concerns, it's interesting to see how ship systems differ from land based ones. Calm seas,
@md.arifuzzamansourav5041 Жыл бұрын
need more contents such as maneuvering system ( with line diagram) of MAN B&W MC-C engine. thank u once again
@thedhl777guy2 жыл бұрын
Wow very cool information Chief your videos have just been top notch and so educational. Thanks Chief
@stephenhope73192 жыл бұрын
I try to get info on various cruise ships while aboard and usually the horsepower figures are higher. Was surprised you showed only 9000HP. Thanks for the video, very informative.
@nikhilbhale79 Жыл бұрын
Dry cargo ships like bulk carrier and tankers have low powered engines as compared to container and cruise ships. Usually the cargo vessels have max speed of 15-20 knots while container ships and cruise ships have max speed greater than 25 knots. As engine power is proportional to cube of ships speed higher speed requires more powerful engines. Doubling the speed requires eight times more powerful engine.
@nikhilbhale79 Жыл бұрын
Dry cargo ships like bulk carrier and tankers have low powered engines as compared to container and cruise ships. Usually the cargo vessels have max speed of 15-20 knots while container ships and cruise ships have max speed greater than 25 knots. As engine power is proportional to cube of ships speed higher speed requires more powerful engines. Doubling the speed requires eight times more powerful engine.
@phillrullzXBL2 жыл бұрын
Working in instrumentation myself, seeing the old analogue device was brilliant, new devices for high speed capture need faster processors and data acquisition / processing, old analogue is as you see, want a faster sample time pull the spool faster. Ha Love it.
@riptwan Жыл бұрын
In this episode - The Chief has a headcold
@rocylalanvlog64662 жыл бұрын
Thanks for sharing sir Chief Makoi
@Rsenior19812 жыл бұрын
I'm surprised cylinder pressure isn't monitored at all times. Looking at PV diagrams on a log-log scale can provide significant information of a cylinders health, at a glance.
@TheRedstar912 жыл бұрын
single cylinder exhaust gas temperature is sufficient for indicating general cylinder health. I could imagine that the pressure transducer isn't particularly heat resistant.
@matthewbeasley77652 жыл бұрын
I had the same thought. Given that this engine is fully computer controlled with both exhaust valve and injection under computer control, it could be used to tune the engine.
@briancasady662 жыл бұрын
Great and informative video. Really like your channel
@Mercmad2 жыл бұрын
As someone from the Old days I can only say that I wish we had a computer driven indicator!.
@MervynPartin Жыл бұрын
Such wonderful progress. Never had such equipment in my seagoing days. Had to use the mechanical indicator-awful.