Large Diesels like this use Compresses Air start - not a starting motor. They have a turning gear to rotate the engine for set up and repair, but this only turns it very slowly. They have a "slow turn" feature that puts reduced compressed air into the cylinders to rotate the engine for the first start to clear any water and spread the cylinder lubrication. To start the engine , high pressure air (30 bar ) is injected into each cylinder in turn to get the engine moving at speed , then the fuel is injected. It is a 2 stroke engine, turbocharged , about 800 mm bore and will have a 3000 piston stroke - turning at maximum 77 Rpm at maximum continious rating - MCR. When the main lube oil pumps are running, there is oil flowing from the crankshaft bearings, the cross head guides and the crossheads - it rains oil in the crankcase. I spent 30 years working on engines like this and it pains me to think someone says a "starter motor" gets the big buggers moving. No way.
The 'starter motor' part really amused me. I had a mental image of the captain up on the bridge searching through his pockets for the ignition key. LOL.
+Tri-County Electronics There's no way you can step inside the engine when it's running! For a start, it's a flying miasma of oil droplets when running so even a Go-Pro stuck in there wouldn't see much, and you certainly wouldn't risk having a lamp in there. The video showing the scavenge ports is also not taken whilst running - all sorts of crap is flying around the scavenge ports when the engine is running. It seems to be on the turning gear and they've speeded up the video in the latter stages. I worked inside these things for 18 years, but only moved them on the turning gear whilst inside, and it's a lot slower than the video shows. The guy taking indicator cards is no expert either...
That's the engine turning on turning gear speeded up. The noise is from a running engine superimposed. No one would run an engine with no lube oil on - in fact the engine won't start unless there is lub oil pressure, and in the crankcase it flies around all over the place. Trust me, I have spent 18 years at sea on these engines. Incidentally the guy with the little rotating drum is taking "indicator cards" to work out the power output of the engine per cylinder.
You are correct. This is timelapse and speeded up. The camshaft space and crankcase are like a waterfall of oil when running. I have had perspex doors made to see a problem cam in action at full sea speed and it gets pretty messy in there.
There is a video somewhere showing actual footage from inside the intake ports at the base of the cylinders when the engine is running. Just can't find it though..
At the beginning of the vdeo, the engine is actually running at full speed. This part of the video was taken using a strobe light which makes it look as if the engine is turning slow. Every once in a while you can see an extra flash or two and some very fast motion.
+Andrew Armstrong so given its 4-5 seconds per revolutions, i can only surmise this engine was not running,... also its clearly a two stroke diesel, given by the ports in the cylinder, this engine would not run with the crank case open, no air pressure !!
its a crosshead scavenged engine with the connecting rod running through a scraper box. The turbochargers blow air through coolers into the scavenge space and no air enters the crankcase. 0:42 shows the scavenge space and scav ports as the piston rises on the compression stroke.. I know - I've been inside these engines more than enough. I wouldn't put MY GoPro inside an engine!
Хорошее видео для ознакомления с устройством 2-х тактного крейцкопфного двигателя. Но это снято на новой не работающей машине, при проворачивании её валоповоротным устройством ( нет нагара на поршне, масло не поступает на подшипники, нет проскока газов при рабочем цикле). Устройство для снятия индикаторных диаграмм ( майгак) не должен работать так долго. Диаграмма снимается только за один цикл, потому- что при многоцикловой съёмке диаграмма будет размытая и не пригодная для обсчета планиметром. Я отработал 8 лет на МАН K9Z 60/105E .
Those big ass marine engines have hatches for each cylinder so they can inspect for ware and or do maintenance. It would be impossible for a person to be standing in there if that engine was running at speed. They are rotating that engine slowly right now. Im just guessing but i would say that engine at speed would be turning around 600-800 RPM.
+Stroker Ace That engine the fastest it can go in an emergency is 120 RPM I know what I am saying as I have worked for years on those type of engines!!
I feel like i'm watching a horror movie intro
Large Diesels like this use Compresses Air start - not a starting motor. They have a turning gear to rotate the engine for set up and repair, but this only turns it very slowly. They have a "slow turn" feature that puts reduced compressed air into the cylinders to rotate the engine for the first start to clear any water and spread the cylinder lubrication. To start the engine , high pressure air (30 bar ) is injected into each cylinder in turn to get the engine moving at speed , then the fuel is injected. It is a 2 stroke engine, turbocharged , about 800 mm bore and will have a 3000 piston stroke - turning at maximum 77 Rpm at maximum continious rating - MCR. When the main lube oil pumps are running, there is oil flowing from the crankshaft bearings, the cross head guides and the crossheads - it rains oil in the crankcase. I spent 30 years working on engines like this and it pains me to think someone says a "starter motor" gets the big buggers moving. No way.
The 'starter motor' part really amused me. I had a mental image of the captain up on the bridge searching through his pockets for the ignition key. LOL.
Are you a marine C/E?
@@wilsjane maybe the chief engineer in the engine room and not the captain🤣🤣🤣🤣
I would be scared as hell being in that engine while it's running!
Andrew Armstrong well yeah. Sure...
+Tri-County Electronics There's no way you can step inside the engine when it's running! For a start, it's a flying miasma of oil droplets when running so even a Go-Pro stuck in there wouldn't see much, and you certainly wouldn't risk having a lamp in there. The video showing the scavenge ports is also not taken whilst running - all sorts of crap is flying around the scavenge ports when the engine is running.
It seems to be on the turning gear and they've speeded up the video in the latter stages. I worked inside these things for 18 years, but only moved them on the turning gear whilst inside, and it's a lot slower than the video shows.
The guy taking indicator cards is no expert either...
Well...there was a guy who got trapped in the scav box without anybody knowing he was in there before departure. He...was not OK.
Spencer Clements , it aint running this idiot just wants to put up retarded videos
That's the engine turning on turning gear speeded up. The noise is from a running engine superimposed. No one would run an engine with no lube oil on - in fact the engine won't start unless there is lub oil pressure, and in the crankcase it flies around all over the place. Trust me, I have spent 18 years at sea on these engines.
Incidentally the guy with the little rotating drum is taking "indicator cards" to work out the power output of the engine per cylinder.
Stephen Carey whats max. rpm?
You are correct. This is timelapse and speeded up. The camshaft space and crankcase are like a waterfall of oil when running. I have had perspex doors made to see a problem cam in action at full sea speed and it gets pretty messy in there.
There is a video somewhere showing actual footage from inside the intake ports at the base of the cylinders when the engine is running. Just can't find it though..
I'd love to see that video if you found it..
It’s a Detroit diesel isn’t it?
From rocks in the ground this engine was made.
Wtf. That's trippy. Mesmerizing almost to see the inside of that thing.
At the beginning of the vdeo, the engine is actually running at full speed. This part of the video was taken using a strobe light which makes it look as if the engine is turning slow. Every once in a while you can see an extra flash or two and some very fast motion.
Terence Hawkes this is the proper answer. I don't get how people can't see this and believe that this is the actual speed of the engine.
the beauty of MAN B&W MC series. I love ME series though
i don't believe its running, seems like it on a starter or turning gear.
Andrew Armstrong wow, really? Thats impressive.
+Andrew Armstrong so given its 4-5 seconds per revolutions, i can only surmise this engine was not running,... also its clearly a two stroke diesel, given by the ports in the cylinder, this engine would not run with the crank case open, no air pressure !!
+phil no It has a turbo/super-charger that blows directly into the ports. No compression in crankcase.
huh, that i didnt know !!
its a crosshead scavenged engine with the connecting rod running through a scraper box. The turbochargers blow air through coolers into the scavenge space and no air enters the crankcase. 0:42 shows the scavenge space and scav ports as the piston rises on the compression stroke.. I know - I've been inside these engines more than enough. I wouldn't put MY GoPro inside an engine!
Beautiful 2 stroke diesel engine
I like seeing the indicator at work.
Lol nos sound does not mean silent lol
Will this fit my honda?
No Limit Enough with the over used honda bullshit.
You would need to melt down about 1000 Honda's to get enough metal to build the engine. LOL.
Хорошее видео для ознакомления с устройством 2-х тактного крейцкопфного двигателя. Но это снято на новой не работающей машине, при проворачивании её валоповоротным устройством ( нет нагара на поршне, масло не поступает на подшипники, нет проскока газов при рабочем цикле). Устройство для снятия индикаторных диаграмм ( майгак) не должен работать так долго. Диаграмма снимается только за один цикл, потому- что при многоцикловой съёмке диаграмма будет размытая и не пригодная для обсчета планиметром. Я отработал 8 лет на МАН K9Z 60/105E .
this was obviously a freewheeling engine (ie NOT under power) and then sped up to 15-20 RPMs to simulate it actually running.
Its upon blow off before starting
So when will part 2 get online?
Long Duration cam lobe.
Is the camshaft turning at half crank speed even though its a 2 stroke ?
So smooth
Saweeet video!
Very nice indeed. I wish I had been able to take indicator cards.
It is a Hudong made MC engine, from video see the fuel pump's size and indicator looks this is a 42 or 50MC isn't it?
worth watching
Fairly sure that cam is bigger than my car
nic video sir thanx fr uploading such video ..do u hav some video on ship would lik to see cn u upload it
Doesn't the force generated by the propeller against the shaft need to be directed to some sort of a thrust bearing?
Yes.
Those big ass marine engines have hatches for each cylinder so they can inspect for ware and or do maintenance. It would be impossible for a person to be standing in there if that engine was running at speed. They are rotating that engine slowly right now. Im just guessing but i would say that engine at speed would be turning around 600-800 RPM.
+Stroker Ace That engine the fastest it can go in an emergency is 120 RPM I know what I am saying as I have worked for years on those type of engines!!
+John Hili Wow that's crazy. I'm having a hard time wrapping my head around how an engine would even be able to run that slow with combustion and all.
Because it's immensely heavy. The torque is monstrous.
its on standby where the electrical enegines war up the gears and oil
The pressure volume graph spinning tingny, its a old version of this tool
Shiny.
Dat het "banaantje" nog steeds wordt gemaakt.
فيديو ممتاز مجهود رائع
Silent running or volume muted?
three you have DA ROD !!!!!!!!!!!
not even V-Tec...
think i just got dumber, no wait it was just the video
Bolesno
Not what I would class as rigged for silent running we do it differently in the RN I suppose
Edited like a saw movie lol
Sounds pretty loud to me
it shouldn't produce much heat
do you feel special now nick?
illuminati
Not running