While checking out some of our military hardware i found this old Detroit Diesel engine that uses an Air Research turbo and the turbo setup is quite similar to what we use on our LT1/LS1 engines, so it comes from both banks and then is routed to the front of the engine where the big turbo sits.
This is a 2 stroke Diesel engine and yes it doesn't use a wastegate.
I just liked the looks of it so i decided to make a picture and show it.

http://home.quicknet.nl/qn/prive/ser...o/detroit1.jpg

http://home.quicknet.nl/qn/prive/ser...o/detroit2.jpg

http://home.quicknet.nl/qn/prive/ser...o/detroit3.jpg

http://home.quicknet.nl/qn/prive/ser...o/detroit4.jpg

 

my fire engine has a garrett (air-air intercooled) turbo on it and it sounds sweet. i wish i could run a turbo that sounded like that on my car. oh and it is wastegated. it doesnt look as big as the air research turbo though.

its not setup like the engine in your pic. its a 6 cylinder 4 stroke detroit series 60, so the single exhaust manifold comes off the right side and into the turbine.

the engine weighs 47,800 lbs and the motor puts out 430hp and 1,450tq. it moves pretty well for how much it weighs.

jeremy

 

I'll post up some pics of the turbo system on our E-One. They really do run pretty well for thier weight. The EMS department in our city has what they call Fox trucks which are F-350 SD pick-ups with gasoline engines, and our fire engines can out accellerate the Fox trucks. Top out at about 75 MPH though, they're geared to run around in town.

 

do you watch "rescue me"? looks like E-one pulled their logo from the show. they used to show the grill from an E-one engine, now its just the grill with the emblem blacked out.

anyway, ill try to post some pics of my engine too. it'll be a while since i took the next few weeks off due to my little boy being born soon.

my engine is a Pierce Dash. our department should be getting the Pierce Quantums we ordered pretty soon. i dont know if i'll like them though. i think the nuematic steps and other little bells and whistles are worthless. but they are rated at either 515hp or 550hp, so thats a plus. it's an option to get the "Dash" with the 550hp motor too, but they opted not to get them. dont know why, its the same motor, just programmed differently.

jeremy

 

Congrats on the new addition to your family! It'll be a little while before I'm back at work too, we're 24/48 and I took 2 shifts off.

 

thanks. our shifts are 48 on, 48 off, 48 on, 48 off, 48 on, then 8 off. i took off two shifts and traded duties on another, so im on a 26 dayer!

but ill be really busy, so it wont be much of a vacation.

 

ok im a 63H track vehicle mechnic in the army.... that motor is used in M113A3 track its NOT a 2 stroke its 4 stroke its a pretty impressive motor non the less pushes around a 13ton vehicle pretty quickly

 

Indeed ! But they still told me it's a 2 stroke engine and i've heard that from several (international) sources.
As for the vehicle, yes it moves around the field quickly but that's about it.
It's armor isn't worth beans and you lack space everywhere (bumping your head every 2 minutes) and they are VERY noisy making tactical movements very hard. We've had them for years now and we should be soon upgrade to the Swedish CV70.

 

iv seen the heads off of those motors its a 4 stroke pointless to put any kind of forced induction on a 2 stroke wouldnt do anything but either waste alot of gas or run extremly lean. yea you can really beat your brains out in a M113 but the M577s you can stand it so its not too bad we call both of them bullet catchers if hit by a 50 cal............. the round just rattles around inside and kills everyone i havent heard anything about using some swedish PC

 

Sergio you are correct. The 6V53T (your picture) is a 2 stroke engine do to its piston port design. The engine is rated at 275 HP because of the turbo/roots blower combo (the regular 6V53 has 215 hp with the blower only).

 

my department has some old fire engines made by Beck and they have 2 stroke detroits in them. they too have the blower & turbo set up on them. how and why does that work.

i wouldnt think that a turbo would make a difference blowing into the roots blower. i didnt think that a positive displacement pump or blower can utilize in-coming forced air.

 

I'm thinking because of the packaging space and the technology available back when they designed it the PD blower was marginal at best.
You can always stack boost. Look at the pro stock tractor pullers they run 2 turbos feeding one another to get 150lbs of boost.
New cat engines also come with 2 turbos in line now on some of their engines.

 

well maybe because im thinking of water. i'm an engineer so i have to have a good understanding of pumps and pump theory.

we have positive displacement pumps (rotory gear pump) that are basically like roots type blowers. intake pressure does not have an effect on their output.

now like you said about 2 turbos, two or more inline (series) centrifugal pumps can "stack" pressure. basically helping the next pump in the line create more pressure than it could by itself.

the positive displacement pump's output is direcly related to its size and rpm. for example, if a rotory gear pump puts out 100psi at 2000rpm, and you have another pump that is putting 200psi into it, the rotory gear pump (staying at a constant 2000rpm) will still put out 100psi. in this case it would basically be a restriction.

im guessing that it is different with air. if the air is compressed (water cant be compressed) and then enters the vanes/gears in the roots blower, the air being displaced will be at a higher pressure than it would be if it doesnt have the turbo.

anyway, this is a pointless reply. im just bored i guess. im sure it has to do with water and air having different characteristics.

jeremy

 

Yep, like you said. "you can't compress water"

 

keep thinking its 2 stroke....... its not and the point of having a blower and a turbo is the blower is for lower RPM and the Turbo is for the higher RPM to make up for the blower also due to the gearing of the track just cruising around the turbo wouldnt help out very much but the supercharger makes up for it like i said b4 this is my job its what i work on i work on like 3 diff packs and 2 are those rahter its a A3 or A2 dont know where everyone is getting this 2 stroke crap from.....