Main Engine Crankshaft Deflection Reading | Chief MAKOi
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- Опубликовано: 2 окт 2024
- Here's another technical video. This time, we send the cadet inside the Main Engine's Crankcase to take deflection readings.
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Chief MAKOi
Seaman Vlog
Keep up the good work!
Thanks Hon!
Mommy Jenny, can't wait for another video!
@@ChiefMAKOi what is the air compression ratio?
@@xianshi8896 Given it's a 2-stroke, be somewhere between 15.0 to 1 and 19.0 to 1, given its turbo charged i suspect its on the lower end of 15
@@AnIdiotAboard_ thanks.same as locomotive engine has 16:1 ratio. love Diesel engine too much.
Chief, as a retired Marine Engineer I just want to hand out an "atta boy" for your efforts. Excellent content, very well presented. Wish I had this type of instruction, freely available, when I began learning the trade 40+ years ago. Great experience for the Cadet. He's lucky to get such tutelage!
I'm an aircraft maintenance engineer and I love these insights into other spectrums of the engineering world. Thank you
FASCINATING! I LEARN SO MUCH FROM YOUR VIDEOS. ONE OF MY WORK ACTIVITIES IS WORKING WITH CNC MACHINES SO I'M AMAZED WE WORK IN SIMILAR SCALES OF MEASUREMENT.
Hail to the chief! I am a veteran mechanic. Throughout my career, I have worked professionally on everything from cars, to locomotives. But I have never seen anything like this. Thank you chief Makoi. That was one seriously interesting video.
I remember taking and doing the readings when as a young sailor, and validating the measurement as a senior member of the propulsion division. Great video!!
I was a marine engineer in the 1960's with the Nedlloyd lines from Holland.
On our main engine ,a 12 cylinder Sulzer we had main bearing failure of three main bearings , between the last three cylinders.
Oh horror, after arriving in port , Papua new Guinea, and when opening the inspection covers, shining the inspection light and seeing all those flakes of babbit underneath the crankshaft.
We had spare main bearing shells, but they still had to be hand fitted to the crank journals, we sure learned how to scrape the bearing material, apply prussian blue, turn the shell under the crank, take it out again, check the bearing pattern and again and again until perfect, I believe it took us a week, 12 hours on, 12 hours off to get the engine operational again, and of course we also took crankshaft deflections like chief Makoi so well explained here. What a job, I will never forget!
Thank you chief
Great job your, my brother
Hi Chief, thanks for the look inside the engine. Someplace most people will never get a chance to see. Cheers
Take note that this is a medium size 2 stroke cross head engine. The big ones are 50% larger bore and 12 cylinders.
They are seriously big.
I remember climbing around inside these wonders, hammering on everything to check if anything's come loose...in 70C temperature that is...phew...
Thanks for the great vids Chief ! -its nice that all the "land-crabs" can see how their necessities are moved around the world. Keep up the good work !
Land Crabs😂👍
@@A.C.00 I think Allan means Austin Maxis!
My initial thought was that the movement with cross head resembled large steam engine practice - no doubt for the same reasons.
@@peteacher52 Well, partly. The cross head takes the sideways pressure of course. It makes it possible to have pressurized scavenge air from the turbo chargers under the piston, and also the benefit of very clean oil, free of combustion particles, in the crankcase. Unlike the Detroit 2 stroke diesel truck engine, which has very long pistons and dirty oil....
@@AllanKorup I was just noticing how strangely clean the oil looks in this engine and was wondering if it was because they just changed it. Does what you're saying mean it's always clean like that? Is there no blowthrough in the cylinders at all? I would figure at that size there must be loads!
As a diesel mechanic, ships and ship engines have always amazed me. Such an amazing machine, the size blows me away
Great video. Thank you, Chief, for both your engineering skill and attitude to teach everyone about naval engines; what you showed in this video is truly impressive...
Jus sayin' Chief! You do a good job showing what it takes to make the world go round!
I used to sail Chief Electrician on APL C10's. I held a 3rd's Steam License at the time.
I always asked my Chief Engineer if I could 'play' Engineer when we were LA where we replaced 2 cylinders of the Sultzer 12 cylinder engine. They were also doing an alteration on the cam lifters. I did a video of one time, but part got erased with a video of a Dutch guy in Kobe, explaining the history of Santa Claus through the different cultures!
What can ya say?
I worked for 5 (8+ total) years in the US Navy, mainly 38a Shop stuff. Fixed em, built em, and sailed em for another 40 years.
Most people don't understand how massive and powerful these engines are, and the precision that is required for them to operate at the power levels they do for prolong periods.
That said..
I still prefer the hum of turbines over the thumping of a diesel!
Keep it up!
What You Haven’t Seen - RUclips channel just posted:
Engine Fire Aboard Containership “President Eisenhower”.
Great reminder of why you perform maintenance and practice emergency procedures.
The fact that you do these regularly is just amazing, like in a car this wouldn’t really be done as it’s easier to measure the main bearings and the crankshaft diameter directly
Very cool to know these things !!
I want one of these engines to put in my 3/4 ton Chevy pickup!! Seriously, anytime you can walk around inside the bowels of an engine, you know it's freaking massive! Great video, though, learned little bit about these massive engines.
Thanks Chief your videos are educational and just fascinating. You must have been one hell of a instructor at the academy.
Thank you! I like to think I was and made an impact on my students. A few of them are Chief Engineers now.
@@ChiefMAKOi I sure you have because I have learned more about marine engineering from you and the videos you have made the I did ever in college or in the Navy.
What an absolute beautiful piece of machining and engineering.
Awesome video with crystal clear narration. Thank you Chief... 👍🙂
Great vlog as always! Looking forward to the next one. Happy sailing my friend!
Dear chief Makio love to watch your upload all the time. I wish you and your you tube were around back in early 1970 when I was sailing and working in shipyard as a young man. You are a good teacher all these youngster are very luck to have you around. They could and should benefit not only from your knowledge. If they don't then they are just KNUCKLE HEADS tell them I say so. Your willingness to teach in the manner your teaching just excellent. May God bless you.
Very informative. I'm an auto mechanic so this quite interesting to me. Great footage!
It truly is amazing seeing how big these ships engine's are. Its engineering bit on a whole new level to your average car engine. Just amazing. Another great vlog on a ship life and mane the most important part, maintenance.
Big plus side... no freaking way you're gonna drop and lose parts this size lol
Great video, and really cool to see. Thanks for sharing!
Awesome l! Thank you for the education and great quality videos!
Thanks! Always learn something new watching your videos! Cheers, to the Team!
Thanks for your continued support!
Thanks for this. It's something us land-locked mortals have never thought of.
Look around your room right now. I bet the majority of things we own or eat came from somewhere else on a cargo ship!
Just think of the size of the CNC machine that machined that crank WOW ✌️🇬🇧
great video! kudos to the camera guy. got right down to the nuts and bolts. love this channel.
It's so crazy that you can walk around inside the crankcase around the crank and big ends.
Keep up the good work mate watching from Australia 👍👍👍👍👍👍
Cheers from the Pacific West Coast of Canada.
Hello Mako i igood to listen you excellent video. Thanks for sharing.highly. professional job. Never seen befor .thanks.
Chief.. the amount of stroke on those pistons is very impressive.. Much love from Michigan here in the US.. Keep up the great content. Love when you guys get to BBQ and have some relaxing times on the deck..
Those engines are an incredible piece of engineering.
I so enjoyed this one.. reminds me of learning to work on my own lil sail boat engine a Perkins..it's amazing the size an work to keep everything tickety-boo... ✌🏼💗😊❣️
Chief As an automotive mechanic I wondered where they hid the wrist pin. Now I know, which leads to the question, how is the pin "torque plate" wear adjusted and how is it lubricated? Your next video?😁
Does the engine oil get regularly replaced or is it continuously cleaned ?
In either process are samples drawn for analysis ?
The lube oil continuously circulates through the LO Purifier.
It gets continuously topped off, and samples regularly sent in. Typically your lube oil supplier such as BP will handle this. The entire charge of oil will never be replaced, unless some type of severe contamination occurs, such as accidentally mixed with sea water, but that is an extremely unlikely scenario. But lube oil heat exchangers have cracked in the past, but this is extremely rare.
Loving these technical videos, the functioning of a large ship is something most of us never see and is really fascinating.
I always knew a ships engine was large, but never expected that you have to go INSIDE it! Makes a small block 350 look microscopic!
I first experienced cross heads and their function on large stationary compressors when I worked for Cooper energy.
I don't want to come off as nitpicking an awesome video, I hope it's not taken that way!
There are more reasons that slow speed diesels have a separate crosshead and a straight piston rod.
In a two stroke with air inlet ports, there are three options to handle the scavenging air. 1) Pressurize the crankcase. This is what is done with small engines like weed eaters, chains saws, motocross bikes, etc... 2) Use a piston almost as long as the stroke. That way the piston skirt plugs the air ports when the piston is above bottom dead center. This is done with the famous Detroit Diesel / ElectroMotive Diesels, along with many modern marine medium speed diesels. The big disadvantage of this design is it makes the engine longer. 3) Use a cross head and piston rod with a seal.
There are several good reasons to want to not pressurize the crankcase. With big diesels like this, the inlet pressure is quite high due to a large turbocharger. The charge air is also quite hot, even after aftercooling. Plus having the scavenge air in the crankcase means the lubricating oil gets into the cylinder and makes soot.
Another advantage of the separate crosshead is the crosshead can get excellent lubrication compared to a piston, and the surfaces can be optimized for the job. A piston is only oiled on the down stroke, a cross head can be lubricated on both directions of travel.
Another huge advantage that you left out, is the fact that a stationary (meaning only moves up and down, no side-side motion) piston rod like this can be sealed off from the crankcase with a packing gland, keeping the filthy blowby gases out of the crankcase lubricating oil. People always ask me why we never had to change the oil in a big engine. This is why, it doesn't get blowby junk into the oil, so it's just like oil in a car gearbox, lasts forever if kept clean, not overheated etc. Another big advantage is you can use a special consumable low-ash type of cylinder lubricating consumable oil, so the piston and piston rings has their own oil, and the crankcase, and rod and main bearings use a separate oil supply.
@@brnmcc01 Yes, forgot to include that. I did mention no lube oil in the cylinder, but left out that it also means no blow by in the crank.
Super interesting connecting rod configuration.
Great video Chief. How do the engineers keep their footing walking on those slick oily surfaces inside the crank case?
Carefully. 😄 You'd actually get a feel for it if you're in there.
@@ChiefMAKOi Must be like walking on ice.
@@ChiefMAKOi 🤣🤣🤣 better than being down the chain locker stowing cable !! Lol changed days indeed.
Those booties they put on their shoes help, as well as helping keep the engine crankcase clean. No dirty shoes allowed in the engine. Yes the bearings are massive, but the clearances are precise in modern engines, and a tiny rock or piece of sand can cause expensive damage. I like how Chief Makoi keeps his engine and engine room so clean, cleanliness is important for long trouble-free life.
Thank you MS Selandia ( first diesel engine ship ),,,, and Denmark who made it,,,, and of Course Mr Rudolf Diesel.
Another great video. I am not really claustrophobic, but sharing a limited space with giant moving engine components does give me pause.
Mark, have you ever seen the Steve McQueen movie, "The Sand Pebbles"? If you have, you will know of the scene I am thinking about. If not, I am not going to give it away here!
Good movie, "my monkey wrench"
A great movie and a better book written by someone who actually served on ships of the "China Station" of that time period. (Author: Richard McKenna; a 1962 book that's still available from the usual places.)
Thanks for the interesting videos, chief! I write technical documentation for marine engines, and some of your videos help me a lot in terms of practical aspects, like getting a better grasp of the space available in the crank case. May I ask you whether you generally follow the manufacturer’s instructions step by step, or do you know the procedures by heart? Also, do you prefer paper or digital documentation?
That explosion looked nasty. I still think I would take it over a 1200psi ruptured boiler. We had one of those just before I left my first ship. Fortunately we were in port and no one was hurt.
Chief please do make a seperate videos on Crank case explosion with some videos like you have shown here
Please keep a look out for my 10 mm socket in there
Yes, that engine is absolutely massive! Now, imagine the size of the machines that MADE those parts!
I worked at Ingersoll Milling Machine Co. we had a milling machine that required a new building almost a city block in length just to house that monster. The bed was 150’ long.
I would absolutely love to see one running from the crankshaft
very cool video thanks chief!
Simply fascinating how big these engines are! Thanks for sharing this.
Great video learning thanks for sharing
First, And love your content Sir!
idk why but the idea of being inside a crankcase just scares me. like this engine combusts fuel and you can just be inside of it. idk tho maybe i’m just weird lmao
Is the crankcase filled with lubricant or are the moving parts sprayed while in operation? These engines are an engineering marvel. Great vid Chief.
They are sprayed.
No crank case is ever filled. The oil is either flicked by a scoop or sprayed
How amazing.
I would think that crank case would be a "dry sump or dry crank case" system where the lubricating oil would be pump scavenged from the engine to a separate area (oil storage tank?) then returned under pump pressure to the engine bearings and the sprayers. Then the oil would drain down, after lubricating and cooling the engine parts, to the "dry" sump to be scavenged again in the lubrication cycle.
@@MegaGeorge1948 I believe you are correct. I understand the oil is also cooled, filtered and treated in the holding tanks before returning to the engine.
Reminds me of the movie"The Sand Pebbles" The safety lock on the jacking gear slipped. There's a worker down there by piston and shaft. You can figure out how it ended for him. It wasn't good.
“Herb, cleanup in crankcase three”
very cool views into the engine!
That's a beautiful piece of machinery.. Is there a way to be there and watch this procedure?
Thank you
Wonderful video creation
Also, Why did you want to become a Engineer instead of a Navigator?
As someone who has worked on car, truck, and larger diesel engines the idea of an engine large enough to crawl inside comfortably is insane. Thanks for sharing this unique perspective with us. Stay Safe.
Wow! Thats a big engine, dangerous parts and must be very precautioness, awesome, never imagine les then this, you have machinery so clean, congrats to all of your crew & hanks 💯👌👍
This is very interesting. I had the opportunity back in 1991 to visit the engine (room) of a large ship. Our port was the first port of call on the ship's life with cargo and we sway a couple of engineers come out the "opening". For us visitors seemed strange. The chief engineer explained they were checking tolerances. Thank you for sharing your knowledge.
I'm a bit surprised to see the engine team without safety glasses. If it were me I'd want a pair on, especially when looking up at the bottom of a crankshaft that can drip oil.
Chief, at any point (say during original engine installation in the ship) is the crankshaft deflection adjusted with shims between the crankcase and ship frame?
Thank you for these interesting reports of a for us living on land different yet very important world! Every report is tremendously informative!
Excellent.
Very interesting as always! I´m wondering what kind of oil is used, which weight and what are the changing intervals of it? Maybe you could do a little video of the lubricating systems on ships? Keep it up!
During a 10yr survey on a medium sized coaster GRT 1600 , B&W alpha V18 of around 2610 B.P.H. The chocks were to be renewed so ,old ones removed , holding down bolt holes blocked off whilst the resin set and after web deflections checked found out someone had used short lengths of broom handle to block holding down boltholes instead of cardboard or the like. Whole lot had to be redone....red faces as company supervisor hadn't noticed . oops. Used bunkers not heavy oil ,but still had all the pipework and heaters for heavy . Smooth as silk once past critical revs , air start ,mated to shaft genny and then cp prop. Took us safely through 87 hurricane in North Sea as only engine , no aux, 3 day trip took 6 due to massive seas ,can't remember LOA but were looking up at the wave tops from the bridge. M E never faltered once. Lost fair amount of deck cargo tho, all dressed timber ,wires and bottle screws just weren't enough for those extremes . Only Kent screen was working after waves took out bridge wipers..exciting stuff at times...
I was questioning why they were wearing bright white sneakers before jumping in to an oil-filled mess before I realized they were rags tied over boots.
Noticed the reading said 42°C. Pretty hot to work in that environment
Great Stuff !
Dammed impressive. To think that is a medium engine. I looks like a steel cathedral.
Another informative, interesting video! I knew how big these engines are but didn't know about the piston connection and that you could change the cylinder liner on-ship using ships crew.
I look forward to your documentaries when you retire. (One can hope, right?)
You do a stupendous job relating the arcane and interesting aspects of your profession as a seaman/mariner and chief engineer. Tangential question for you: is the most comm language aboard your ship English, Tagalog, or...?
Thanks, Chief!
Very interesting. Thanks chief!
I’ve always wanted to crawl around the crankshaft of an engine that big.
Recon u could sort it out for me chief 👍✌️🇬🇧
Damn chief u a short little dude lol. Safe travels friend.
How to say you've never been to The Philippines without saying "I've never been to The Philippines."
😄
What will you do if it measures out of tolerance? Does the engine have to be rebuild or do you have some special methods of mitigating the problem or will it just be noted and otherwise "ignored" for the time being?
I'd imagine it being a rather big and expensice overhaul to replace a crankshaft on an engine this size.
I've looked but my engine doesn't seem to have an access hatch.😉😉😉. The sizes of the parts are unbelievable.
you seem to love teaching.
You are a good teacher/instructor/explainer ... your continuing education and entertainment is appreciated. Thank You, Chief.
First time I did a crankshaft inspection I was severely hung over, first day in the engine room too. That was a tough job.
What kind of RMP does that crankshaft turn under normal cruising speed?
Thanks very much Boss
Great job and great video
Amazing.
i was working at MAN diesel frederikshavn denmark. i turn/milled cam shaft for the injection pumps for the 2 stroke engines, and camshafts for the 4 stroke engines valves and injection cam´s.
it was amazing to see a brand new engine being started up for the first time, and thinking about some of the parts i made will be somewhere on the oceans for several years .
very impressive machines, and imagine, even it is big, the tolerances and presicion is tight and precise as in a motorcycle engine. all workers there was very proud of our products.
No monotony there! Good job guys!
Hey chief great video!! What is the peak output power of the engine?
This engine is rated at 9600 kW.
@@ChiefMAKOi That's impressive for only 6 cylinders and such a slow running speed!
Hi from uk chief MAKOi 👋👍 great episode and well done to the engineers that keep these massive engines going👌💪 but I have a stupid quick question for you plz? I work on cars and am familiar with engines but on something this scale how is the timing kept in check is it chain driven or main gear cogs wheels running oil pumps and fuel on timing etc and have you ever had a main engine failure whilst at sea? Thanks for yours and crews time be safe and see you soon👍👋
For cam-driven engines, there are gears and chains. The engine shown in the video is cam-less so timing is controlled by a computer.
@@ChiefMAKOi that amazing I bet there is one or 2 electronic modules floating around too 👍 I am really impressed with this feature👌 maybe soon could you do a upload on on the working on these engines how timing is achieved maybe on a service interval obviously time depending on yourself and the crews plz ? How big are sumps on these sorts of engines? How much oil resting and what should be in system running ?
@@marksaunders2500 The engine on a fishing boat I worked on was much much smaller than this engine, and the main engine lubricating oil capacity was 5 metric tons!. The two auxiliary generators had about 1100 liters of oil capacity each, and that was replaced on a schedule. The main engine oil was straight 50W, and as far as I know, was never replaced. Only topped off and regular samples sent in to BP. To basically keep track of wear metals, and keep an eye out for a sudden spike of bearing material etc.
Engine Temp. 42°C, in THAT hole with the engine turning: No Thanks! Great Respect!!
I’d love it ✌️🇬🇧
42 isn't terrible if the humidity isn't too high. I remember being in the engine room on a steam powered tug, the temps in there was more like 50C. And very humid, because there's always small steam leaks around. But the fans that blew in fresh air from outside were pretty powerful, and it was tolerable. I always kept a water bottle nearby though, it's not good to get thirsty, that's when you get dizzy and make mistakes.... without that fresh air would be absolutely miserable.
Assisted with a few Crankshaft Deflection Readings in my time at sea.
as a mechanic? totally cool view.. As a mechanic? terrifying..
Best video I've ever seen upon this subject. Congratulations, and thank you so much for sharing it with us.
thank you for sharing
How would an engine get so far out of whack that it would explode like that? Wouldn't you know WAY before a catastrophic failure?
Negligence and incompetence.
By the way that video didn't happened in chief Makoi's ship.
Great video. Thanks for sharing