Volvo Trucks' new turbo compounding, available on our D13 engines beginning mid-2017. Turbo compounding can provide dramatic savings through fuel efficiency improvements of up to 6.5%. www.volvotrucks.us
This is World War 2 aviation technology. There are aspects of this type of supercharging that increase boost without increase fuel consumption. To over simplify if you will, it functions similar to a water wheel. You benefit from the flow of the exhaust without causing back pressure. With a standard turbo charger you have back pressure between the exhaust valves and the turbo equal to or greater than the manifold pressure. Which also traps heat in the exhaust valves/head and turbo. It tough to wrap your head around. I just watched a video on the Douglas DC7 that was capable of 400 mph from the use of the Compound Supercharge Technology. The narrator said this technology has been asleep since the 50s. There are tons of fuel savings and horse power laying on the table if Caterpillar, Cummins and Detroit would revisit this technology. This video only describes one of the general methods of compounding. This is not what we think of in terms of compound turbos that Caterpillar Acert engines use.
Came here from a video about the DC7 and it's turbo compounding engine. Would be interesting to see this tech coupled to a battery hybrid electric motor in cars.
Mazda is bringing a rotary range extender to market in 2022 and will even sell them to Toyota. The rotary is not dead, it's an excellent choice for a range extender.
Interesting, did you all go back and research the turbine shaft problems that the US Army Air Corp had with turbine shafts in the Wright 3350 turbo-compound radial engine of the late 1940's up to the 1970's? They never did totally cure the breakage problems.
@@user-xh2so8ef3o power recovery turbines were used on aircraft engines at least as far back as the WW2 era- as has been stated by a number of people's comments. To present this as a new concept is misleading to say the least. Renaming it and adding one or two modern innovations does not make this "new"
am i dumb? why is it running off a geared system and exhaust gases? someone said they did something like this in WW2 but ive never seen this before, can someone explain what the gears do?
What happens during startup, when that massive gear reduction is reversed? What happens in the setup during periods of inadequate exhaust output- say downhill? What kind of stresses does it produce? Is there a way that the system can be disengaged?
Volvo have tried this before. In Europa they made a version with basic in the D12c engine. From 2002 untill 2005 they sold this with 500hk. It was party a succes. A few of the engines vere really problem engines, and these again created a bad reputation about this turbocompound tecknology. But the truth is that the majority of the engines worked superb. Wery economical with the fuel and ran Wery Long without heavy maintenance. And wery good driveabillity. Powerfull and wide tourque range
Kristian Henningsen I know..i had a 500 turbocompound.. but after the introduction of the FH4 Volvo did talk sbout the I torque engines..that.s why i asked.
You might think so, but history proves otherwise. My dad worked on another turbocompounded engine, the Wright R-3350, and the turbocompounding system was extremely reliable. All it had to do was spin. The unreliability stemmed from the reciprocating part of the engine. The valves would would break, escape the piston through the exhaust, hit the turbocompounders, and break them.
Extra 50 hp, hm, take that EGR out, take that valve's on off- out, take that exhaust treatment out, and I get that 50 HP or more for nothing....ha ha. TH
