nmdiesel89: its fine man lol i have been outta the industry for about 2 years now but still like to try and keep up with the latest tech
nmdiesel89: should be just below and behind the turbo charger, under a heat shield.
j morgan: sorry I know what your talking about now and yes your right its like 53 horse power its right above the starter but covered up by heat shields in the Cascadia's
j morgan: where is this located at I have worked on many dd15s and have never noticed this turbine wheel
nmdiesel89: Yes DD15s have a turbine wheel that engages the flywheel through a gear box when more power is needed. believe it adds about 50 hp if i remember correctly. its called turbo compounding, been used since WWII on bombers. basically its just a turbine housing with a gear box instead of a compressor housing.
trucking604: Same size as a 3406 Caterpillar, 15 liter also.
MisterFlaherty: BTW I own a 2009 Cascadia with the DD15 and 472,643 miles on it. The only problem I've had is a couple sensors go bad (warranty) and a rack and pinion leak. With 3.55 gears I walk past most trucks on the road.
MisterFlaherty: Dafuq are you talking about "gear driven turbo"? That is literally exactly what a turbo is NOT. A turbo has a turbine and a compressor. It is basically an air pump that is driven by the exhaust gases. Tech my ass...
tiktak25: I have owned several 12.7 60 Series one 430 and the last a true 500hp and although they won't pull with a cat they were hard to beat on mpg and it was nothing to get a million miles out of both I had and was strong when I sold them. I don't think Detroit will ever have another jewel like the 60 series..but then again that was before the Government and tree huggers got involved and really caused havoc in the trucking industry forcing cat to go its own way, and now these type of clutter boxes.
tiktak25: You can always gauge how well a new engine design is doing without asking tech that was trained and working for detroit or cat or any engine, because they will always promote what they work on. Look around while your on the road and take notice to what being pulled be hind the tow trucks and broken down side of the road. I can tell you in 2011-2012 The Cascadia and Prostar where along side the roads everywhere!! I suspect the ISX in the PS and possibly this DD15 or DD13 in the Cas.
tiktak25: Sounds like an old 3406 cat I had back in the early 90's
tiktak25: I couldn't agree more!
kwpowerluva: From what I've heard these engines leak like a siv 200000 Kms and they're wet from fan to g,box and they run high in temp bring back ddec4
kwpowerluva: Turbo compound I think he means not gear driven ,
Joshua Sinclair: No. If you look up the MTU series 1600, They are very much alike. Detroit Diesel and MTU have had a close relationship since the mid 1960's. I think the MBE4000 was the previous engine to this and other MTU/Mercedes/Detroit engines.
rbagel55: So this engine might get real good fuel economy and perform real well NEW, but what about later down the road when all that electronic craps starts to malfuntion---Ahhh, that's when it costs an arm an a leg to get it running right--just like new cars nowadays, can't even work on them yourself--not impressed!
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Juan Vuletich: Indeed. it's a complex system, I think similar to the MBE4000. I'm just a student in diesel mechanics and we've seen some of these engines.
EasternAggie: Gear driven turbo? No such thing. Maybe a gear driver supercharger, but even then I don't think it's on this engine.
Jon-Erik Butcher: in the beginning, you see that big heat shield over the turbo? its hiding a gear train. DD15 has a gear driven turbo that runs off the back cover. it helps reduce turbo lag. i am a tech and the fleet i work for has over a hundred of these things. they are nice, but they have a few oil leak problems. the only way to change a turbo on one of these is with a crane and im being serious. so far i dont know anyone who has had to change one even at freightliner dealer near me.
Jon-Erik Butcher: I am also a tech, 21 years old and been doing it for 2.5 years. the fleet i work with has volvos with volvo engines, old FLD daycabs with 12,7 L Series 60s, both of our M11 blew up, one broke the crankshaft (yes...crankshaft, the flywheel was wobbling but yet it was bolted still haha), and 2006/07 Columbia/Centuries with MBE 4000 and 14 L 60s, and Cascadias with DD15 and ISX. the ISX is troublesome with the air compressor heads and they are noisy, along with the DPF and #7 doser injector.
trucker765: In Europe they have found ways to completely remove all emissions crap on these engines and they are pushing 800+ hp
turbosuperiority: That's one high-tech lookin some bitch. I recognize about half the stuff in that engine bay.
jorpe64: Suena como un Perkins de 4 cilindros frio, HORRIBLE!!!!! Detroit Diesel 8V71 un motor de verdad!!! Detroit Diesel 8V71 a real engine.
chechnya: What's the problem with fewer emissions?
bmw2go11: could you imagine the power those engines would produce if all the emissions crap were to be removed?...
Brian Lillquist: I am a Truck Technician and work on these everyday,and yes they are a Mercedes design so they are not American at all. if you want a true American Engine Buy a Cummins ISX.
elcamionero38: Yes it is 100 % assembled in the US in Redford, Michigan, but it's design engineering and components are not 100% American. The DD15 common rail fuel injection is from Germany...Bosch , unlike the US Delphi unit injectors on the 60 series, and various other components from Daimler's Mannheim and Brazil foundries as well.
Daimler designed this engine to be global platform soon to appear in Mercedes trucks overseas, so it is not a true blue American engine like the 60 series was.
Keith Roberts: Not really, 100% built in Detroit USA!
Keith Roberts: Its actually assembled and manufactured in Detroit along with New DD axles in a 3,500,000 sq. ft. facility. All american!
elcamionero38: Wish this was still a good old American Detroit diesel, but now they have German Daimler fingerprints all over them. Hard to call them Detroit anymore, more like Mercedes diesel.
MrJkbubbabutt: Ok, I've heard sewing machines that sound tougher.
Luis Torres: sounds like crap, 60 series is the power!!!!
alvaro nobre: Now the truck gonna spend a week in the shop just to do a diagnostic never mind fixing
thatoneguyjosh: i shift between 1100-1300 rpm i have never gone beyond 1500 but it has great power in my operating range
thatoneguyjosh: im getting 8.5 mpg average in my cascadia what does your truck get?
thatoneguyjosh: no its keeping it alive
sooperPOOPERstar: it is only assembled in detroit...its a kraut engine.
ladilawho: as a tech they are a great engine more hp less emissions
commiesarelame: Ugh. Love the Detroit, but can't stand all the emission BS on this engine. Where's the engine anyways? At least with a Cummins ISX, you can see the engine lol.
Kevin Lynch: i heard this engine is only good for around 1200 - 1750 RPM, it loses a lot of power after that, anyone have more knowledge on this? not that you'll be revving a huge diesel
CARL Barre: DETROIT MUCSLE
ONLY1PEA: ABSOLUTELY RIGHT!!
freighthog3511: There is to much crap attached to the sides of that engine! This emission crap has ruined the trucking industry...
pfchubby: Not the greates motor to work on but its a step in the right direction for Detroit
bj99ful: A far cry from the old 2 strokes. The new Detroits are ok but I still miss the sound of the old 2 strokes; there aren't many still running where I live. They're mostly just in the older transit buses and an occasional dump truck. Hardly ever do I hear one travelling on the highway.
genc shkembi: SWEET ROARING
AmoralEngineer: MTU in germany still produces 6v53T's, 8v71t's, and 8v92t's for the military. Other than that places will only reman old 2 cycles
Detroit DD15 560hp@1850ft/lb w/ 07 Emissions5
out of 5