Why Diesels Are So Loud? Why Are Diesel Engines So Noisy?
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- เผยแพร่เมื่อ 26 ก.ย. 2024
- Diesel Engines aren't known for being quiet and smooth, but why is that? This video describes in detail why that is.
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I love the sound of of big engines music to my ears.....
Very nice music
David Nadon sweet. What is your favourite? I want to give it a go.
Like hearing Pavarotti
@@thetowndrunk988
Tits
And to me, the most beautiful melody I ever heard is from a 6V92TA.
Being a diesel tech myself, I agree with almost everything you said but I can not believe you didnt touch on injectors, especially older mechanical type and HEUI system injectors. You can literally hear a T444E/DT466/Maxforce 7/9 coming from a mile away they are so loud lol. Injector clatter for days. Btw only reason maxforce 13s are so quiet is they spend more time in the shop getting EGR coolers changed then they do running ;) Great video as always
I thought the MaxxForce 7 was a Piezo Injector? Common-Rail and not HEUI? IDK anything about the MaxxForce 9.
What dose it mean when you hear engine knock or something like that it's banging like making a clunk, clunk noise on a cold start up? Diesel engine
International (and older powerstrokes) have very loud engine clatter
Great scot, the MaxxNoise is so bloody loud you can’t hear yourself think, Ford’s ripoff is a bit quieter, but not much.
@@jaysmith1408in my experience at idle the MaxxShitter 7 is quiet. On acceleration it’s louder.
In Summary: Every part of a Diesel makes noise. Thank you . Goodnight. Great video.
Have you ever worked on a pre-combustion 1693, 3406, or 3408? They were probably the noisiest CAT engines made. Sound like the cylinders are full of nuts and bolts, but that was just their nature. I love the sound.
MichaelTJD60. really cool channel love your videos 👍
@@offgriddlifestyle2544 Thanks for the compliment!
My old 84 ford has the 6.9L motor, they have pre chambers in them too, even when it’s happy and warmed up the sucker is loud.
Eagerly waiting to see progress on that Pete 359!
Clatterpillars
Get a pen and a white board and Engineering Explained would be worried about the competition.
I can barely write my name, I'm not a very good illustrator. I feel like my videos could do with some extra info though, perhaps your onto something.
For some reason engineering explained haircut angers me
I just thought of EE when I clicked on this video because he is doing a lot of explaining things, just like EE! He is for diesels, while EE is for gassers. lol
@@rustybrowneye why lol
@@rustybrowneye Relax
Downhill + Cat 3406e 550hp + straight pipe = BIG SMILE
Thanks for the vids .
Gotta love those 3406e engines. I sometimes forget how loud them straight pipes are during winter though. Then I'm reminded when the weather warms up and got my window open and hit them Jakes
I have Pittsburgh power performance mufflers on both of my 3406e, love the sound of a straight piped diesel but I'd also like to be able to hear in 10 years lol
Don't forget to turn on the Jakes
I have a 94.5 7.3 powerstroke there is no quiet but honestly I love the sound music to my ears
My neighbors hate my 97 also! Hey gotta go to work at 330 am! Hope you keep that truck!
I just bought one a few weeks ago and I love the sound too
Like flying at 30000 ft
Ford has an 18.1 high as i can find
same with my 1994 12 valve cummins
I miss the destruction of the week! I hope you end up teaching diesel technology classes some day because you are fantastic at these videos. I’m guessing you’d have a really good classroom demeanor.
My son asked today why my old 5.9 Cummins is louder than the family minivan. I showed him your video and he got it perfectly. haha
Love your videos Josh, you do a great job of making these topics accessible to everyone. I actually run a pump shop myself...
One reason for the distinctive knock of older diesel engines is the ignition delay period. There is always a slight delay between the beginning of injection and the ignition of the fuel. Low cetane fuel or cold engine temps will increase this delay period. When ignition does occur, all the fuel injected up to that point ignites at once, which suddenly increases cylinder pressure and gives you that knock. Modern common rail diesels are quieter because they use pilot injection. Pilot injection works by injecting a very small amount of fuel early, waiting for it to ignite, then injecting the rest of the fuel. This allows for a more gradual pressure increase which decreases noise. It also reduces NOx emissions. Common rail injectors used on light duty diesels since the turn of the century (and recently appearing on some medium and heavy duty engines) run at 24,000 to 33,000 psi (Cummins XPI can hit 50,000 psi), which gives better atomization even at low engine speeds and allows for more efficient, quieter combustion.
2 stroke detroits sound amazing,
You mean if your not deat after driving it
Hi
Still can't beat the sound of old mechanicals
I really love the sound of diesel engines
The newer ones are much quieter as they have staged injection with the fuel pulse broken up into stages with pilot, combustion, and post combustion injector pulses. This dramatically reduces the noise since your not burning everything in one shot. Pretty amazing how quiet a ford 6.7 is at idle.
Another great video from my favorite diesel TH-cam channel
Passengers always comment on the noise of the early 7.3 Powerstroke turbo-Diesel in my van. “That’s loud, is that the exhaust?” “No, it’s just a Diesel.”
Dont you love going through a drive thru for anything? I still have my 97 7.3 f-350.
Kudos to you my young brother. As a long time sub I've learned a great deal from your channel. I have a PowerStroke 7.3 L that I have rarely put a wrench on. I grew up working on my gas engine cars since pre OBDC 1, when everything was just vacuum hoses in the late 60's and 70's (remember carburetors distributors?) anyway I really appreciate when you show the internal components of a diesel engine and explain their operation.
You're a legend mate, I work with cranes in Australia and I really appreciate the knowledge you're dropping.
So glad I found this channel love your videos.
Electro Motive Diesel (EMD), that power EMD Locomotives is a 2 cycle Roots blown or turbocharged.
Talk about a sewing machine smooth but tremendous power. Up to 567, 645 or 710 c.i.d. per cylinder ×16.
Anywhere from 1500 to 4300 h.p.
The rattle and clatter of a good ole caterpillar is the best music made.!
I love your intro. Please dont ever change it!
I never gave diesel a second look till I bought my first one in my truck!! I WILL NEVER go back to a gas truck!!! I LOVE MY DURAMAX!!!
Me too.
I love your Isuzu designed diesel as well.
Unless it's the 4 cylinder in the new Colorado, then it's not an Isuzu diesel.
Wait until you try a real diesel in a real truck.
Kidding.
another thing is that they usually have MUCH higher displacement compared to automotive gas engines. Especially on big semi trucks, they usually are 12L+. More displacement means more air and fuel which means bigger boom
I am driving a 2001 Peugeot 306 hdi. Thats a french 2l inline 4 wagon with 90hp since they put diesel engines into almost everything over here in europe. If you open the hood the injector chatter is ridiculously loud but I like it and the car gets close to 55mpg.
Marine diesels are the best, no fan, no jake brakes, just turbo whine and grunt
I wish newer diesel cars were a bit noisier. I like that constant rod-knock sound :D it's the sound of power!
Great video Josh! Question, isn’t the injectors a large source of the diesel clatter as well? I can’t vouch for cat rocker actuated injectors but I’ve heard 60 series and HEUI injectors on a test bench and they clatter loud enough it sounds like the engine they go in is running. Just curious, let me know what you think. Keep up the good videos!
Great as always , have bled plenty of Diesel engines over the years due to air in the fuel system Howe do modern engines handle this problem thanks for sharing 👍
i finally found out what's that loud noise and quiets down after a while sounds like the engine has a kid throwing tantrum in it. It was the radiator fan.
I love the sound of the old 1693 Cat
Hey I love your videos bro! From a fellow diesel tech..happy wrenching!!
The best sound still comes from the old two stroke Detroit's, I have to stop and listen when ever one goes past; music to my ears.
I learned a lot in this video. Thank you.
Mercedes-Benz diesel sounds really good also have a 300sd
Hezkeel Dar Wonderful car! I am picking up a 1983 myself
I love the way Jake breaks sound.
About the valve noise, I remember when I first got my old Civic before I adjusted the valve lash, it sounded pretty reminiscent of a Detroit 4-53/71
Love your videos man
What about the injection system? I've heard a 24v Cummins and a common rail 24v Cummins. The vp44 is much louder.
The newer common rail trucks use multiple injections per combustion cycle. Where as the older trucks just use a single shot of fuel every combustion cycle with makes them much louder.
Main reason most diesels are louder is they are bigger, ever stood next to an aero engine of the internal combustion type even fitted with a silencer they are loud, another main area for noise emission on the older type of diesel with mechanical jerk type injection is the injector pipes and nozels expanding and contracting each time they are pressurised, probably half the total noise is from this area of the engine, one reason the common rail was developed. Then you have compression knock, combustion should be a fairly smooth process in itself with a steady flame front, no pre ignition in fact the problem with diesel is getting the fuel to start burning fast enough. Another thing is sound frequency in diesels it is much lower and this makes it sound louder to human ears.
So I remember when I was young,... (no comments please) aah... those were the days man...... oh ... where was I oh yea. When I was young.. right. When I was young sitting in the service truck with my dad day in and day out on my summer vacations from school, occasionally we would come across a truck that would sound like the engine was coming apart. I recall Mack's were the worst and they sounded like the pistons were swapping cylinders (as Dad put it). All the trash trucks were Mack in our area and when they came around at 7:00 in the Morning and woke me up I recall saying to myself why in Gods green earth doesn't someone tell all the trash collection companies to fix those trucks they are all broken There were many a day I contemplated calling the City and blasting them about the sinful noise. I mean am I the only one this bothers? Dad assured me that this was a Normal noise and a call to the local Mayor Police and State department would only serve to create a problem for me. AKA him, And as time went on they got quieter .. almost Silent. like today I strain the hear them in my new town.. its like.. Whoa wait. How-come the trash containers are empty. Umm yea its either "SOMEONE STOLE MY TRASH!!! WHY DID I THROW THAT STUFF OUT. IT MUST HAVE BEEN AWESOME STUFF WITH REAL VALUE!!'", or wow that 15 ton truck with a 375 HP 2000 lbs of torque, engine behemoth, garbage truck somehow snuck up to my house and carted away my crap i didn't want and perhaps no one else did either (which made more sense as well as made me cancel my ebay trash sellers account.. In conclusion, It made me feel different.... Today's technology with Piezo electric injectors and Smart Computer controlled Multi Pulse Injectors Have changed the field of diesel engines. The Turbos and engine sealing technologies add to the pluses. The old ones were better some say but they are just different. The old beasts were Simpler, Ran forever without complaint with little more than oil and filter changes. Sure the new one are way more fuel efficient, and quieter and better for us and the environment. Believe it or not, My Nephew said I was causing physical harm to the neighbors and polluting the environment with my 1988 Ford Van with the International Diesel. Of course it passed the emissions testing but he convinced some people to comprise a investigation into it. I have to commend his self serving determination ... Family... Anyway Great stuff here Josh.
The bulk of heavy diesels are paired with air brakes. The air brake compressor doesn’t help in the noise department.
weve got a CNG truck that is almost all just air compressor noise
International Harvester mounted their diesel behind the grain bin on their combines, so it was always very quiet in the cab. Deere had their diesel right by the cab, so you had to deal with all their heat and noise.
Thanks for the video I’m always looking forward to your next one
music to my ears
Great informative video! I get all kinds of weird looks from kids or other young folks whenever i am out and about lol. I can see them just wondering, “why is that thing so loud”. Haha
Now I know. Thanks a lot mate for the explanation.
Most of the noise comes from combustion, especially the older style diesels that don't have common rail injection. Modern diesels are pretty quiet.....with the injection system able to do multiple injection events in a cycle, the rattle can be controlled
Block design can have some to do with it. Deutz air cooled diesel are individual jugs that are like your lawn mower engine just bigger and beefed up. And because there are no water jugs that absorb a lot of the noise, they are easily heard a mile away under load. I actually have a little bit of hearing loss from irrigation pumps powered by these engines. I should add that our ih 766 does have some noise from the injector pump and that is what you mainly hear at idle.
Why are they sounds like connecting rods bearings knocking on the crankshaft? it is thrilling as ones can think of the engine is already damaged. I've listened the same sound on caterpillars, specially on a pail loader when it starts first time in the morning with cold weather. What causes that spooky noise? please, thank you. Wonderful explanation and videos.
I can't even hear the bus coming anymore where I live. The jakes are silent, the cooling fans on them are now electrical driven, exhausts are all muffled up, quieter transmissions. The times are definitely changing.
A turbo is exactly like a jet engine. It's essentially a centrifugal turbine engine with no combustion chamber. You can build your own jet engine if you just build a combustion chamber for it. I built one out of a drive shaft with a piece of exhaust pipe inside to act as a flame holder.
Thanks alot for explaining this
The sound of a diesel engine under boost at low rpms sounds sooo good.
Thanks for the info.
Cummins got the 6.7 so quiet customers didn't like it. So they reprogrammed the injection to get some "Diesel knock" back into the engine. With common rail fuel injection and the ability to do multiple injections per cycle, a quiet Diesel is now possible.
there's also the sudden spike in cylinder pressure for the older engines that didn't have piolet injection.
Nothing sounds as good as a Detroit Diesel v1271
you forgot the injection pump,which by itself makes that particular diesel clanking sound on idle and accelerating and ofcourse injectors too.
I thought some of the noise was sent back out the injector lines. I thought I saw something about how the Chevy Duramax hade over come that?
Ahh, the banging, hammering and clanking that that came out of the old slow turning 300 series marine Cats; the 343, 353, 379, 398 & 399 - pretty sure we paid an extra $10k just for the noise! No fans, no mufflers, all engine and turbo. Had a deck hand on one boat who was scared to go into the engine room because he was sure one of the mains was going to blow up in his face. We all laughed until one did, what a mess . . .
My 1968 Kaiser-Jeep M35A2 deuce and a half has the Hercules 465-LDT-1C multi-fuel engine (22:1 compression ratio) & has the "whistler" turbo. There is about 6 feet of exhaust pipe past the turbo, and no muffler. You MUST wear hearing protection when driving it, or you will eventually go deaf.
Good one Josh, I love my diesels loud!
Love the sound of 2 Stroke Detroit Diesels!
Also, the air compressor that powers the braking system does make some noise. Not a whole lot, but notable.
Great entertainment as usual. Missed seeing "blown up stuff" at the end of the video like you've had in previous vids. What's happening, nothing blown up lately in the Cat shop? haha. You dont have to be a "great illustrator" all you have to do is know-your-stuff and the speaking will do the writing on the board for you and nobody cares about squiggly lines - people are buying you, not the illustrations. On my own channel, im soon starting content talking about CVT's in a style as a blend of what you do "sitting in front of camera" and doing a "white board" like "EE Jason". Keep up the great work there Bud.
I love your videos man!
One more video from my favorite channel
Gotta love the last 2 reasons oh yeah right on👍👍
I don't know about everyone else, especially these days, but I love a good running, loud, clattering diesel engine.... not these emissions clogged prius diesels they have out know where they're quieter or as quiet as a gas engine. My personal preference
You always have good videos very well explained i have a 2002 dodge ram 2500 24v. Can you give me a clue if u see and hear in in a vid?
Of course the Maxxforce is so quiet...….its hard to make noise when your not able to run!
But seriously, my 09 International was very quiet, but it was also gutless, broke down all the time (pyros, EGR, Nox sensors and DPF) and still wasn't legal to keep.
Love my 2 new ISX15 trucks! Quiet enough, plenty of power and 3 years now with zero breakdowns.
1:09 lol, A lot of them don't even make any noise at all.
Don't the mufflers also provide some back pressure? In some engines they do...and if you don't run them with a muffler, you can damage the engine. Is this true on diesels, too?
I have a FIAT Tipo 1.9TD from 1993 and is very loud at idle (Sounds the same cold and hot) but when you are driving is a lot quiet, like gasoline quiet.
I have cat engines in my yard that are completely destroyed, theirs enough cat engines here to build a house just in case someone needs parts
Rondal Simonds you have anything worth rebuilding?
Ziptie 06 only a c10
You didn’t cover transmission/clutch gear roll over
You should make a video about these 50k mile oil changes these manufacturers are recommending
How can u get ride or whistle in 550 cat checked all hoses to air to air air intake .
Are you trying to get rid of the whistle? 550 cat is also not enough information, a 550 3406a has different considerations then a 550 acert.
My Cummins swapped OBS F-250 is stupid loud when going down the road, can barely hear my radio at full blast lol
Diesel engine sounds are like Bitter Sweet Symphony for my ears. Calms down my mind. Aren't engines are meant to be loud? Who needs horns, btw? 😁
I have a freightliner series 60, can I use fuel injectors 4049. The originals, that are mine are 5575. Will the motor be damaged if I change numbers?
Can I put a cat 3508 in my Mini Cooper?
Joe Sniadecki 3516 or don’t bother
C. Henderson omg I didn't think about that I should
Apeman, do you have a video on replacing a water pump on C15 Acert? Thanks for the great info!
Hi Josh , can you talk about knocking issues for diesel engines which is run on dual fuel (Gas+Diesel) , i will highly appreciated that.
my first truck with a cat sounded bad like the pistons were swapping cylinders right now
I live in a 1968 gm pd4107 bus converted to a motor home Detroit two stroke every thing
on it is gear drive blower alternator water pump even the original Ac system fan runs all the
time engine temp controlled by shutter stat real happy that that the engine is 30 foot behind me cause dam that that old two stroke is noisy
you and yours have a good day
THE GRUMPY BUS
What size fittings and hose do I need to make oil pressure gauge tester, I already have the cat gauge but dont know what size on fittings. any input thank you great videos.
I like your videos. But I really want to see a video on how to turn up the horsepower on a cat c7 diesel engine.
They're fucking not louder than spark-ignited engines! I have heard motorcycles which are louder than 4,400-6,000 horsepower diesel locomotives.
Forgot to mention the large tire tread
Diesel noise, lovers treat it as music, heaters hope they never exist. I am the lover, mo matter single cylinder or 20 cylinder, 2 stoke or 4 stoke.
Hey josh could you do a video on ether cold start the bad and good with starting fluid
My 6.7 cummins which I did a full delete,4" from the turbo back is as quiet when it had all the emissions on it
We know Johansen of Jo Blocks, but who was Jake of Jake Brake?
Actually the company is Jacobs Vehicle Systems, Inc. That name comes from Arthur Irving Jacobs who designed/developed the Jacobs drill bit. More interesting is that the guy who patented what would become the Jake Brake was Clessie Cummins who also founded the Cummins Engine Company in 1919. After being forced out of his own company in 1955 he came up with the engine braking system. Jacobs Manufacturing opened the Clessie Cummins Division in 1961 to manufacture the brake system. This later became Jacobs Vehicle Systems. So it should probably be called the Clessie Brake???
Basically, what's called "knocking" in a gas engine, is normal operation for a diesel.
what engine cummins or cat produces the most hp and torque to fit in a truck (big rig) with out def (ad blue) old school please help
I beg to differ I think a streight piped diesel exhaust is quiter then a streight piped gas exhaust but the diesel engine itself with a muffler is louder then a gasoline engine with a muffler.
i love the springish sounds of diesels lol
Thanks man
Also the injection pump on older ones