New detroit engine, the DD15, with turbocompounding

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10-22-2007, 04:19 AM

allan5oh

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Join Date: Aug 2005

Location: jackassville (winnipeg, mb)

Posts: 3,280

New detroit engine, the DD15, with turbocompounding

http://www.detroitdiesel.com/engines/dd15/

http://www.etrucker.com/apps/news/article.asp?id=64078

Quote:

At the rated engine speed of the DD15, the turbine reaches a rotation speed of more than 40,000 rpm. Power is transferred to the gear drive, and therefore to the crankshaft, via a shaft and a hydrodynamic coupling. This arrangement produces a uniform and smooth crankshaft rotation despite the higher torque, according to the company; additionally, fuel consumption is reduced by up to 5 percent compared with a similarly spec'd Series 60.

http://www.detroitdiesel.com/pdf/eng...5-brochure.pdf

page 6, the sort of "half turbo" looking thing is the turbo compound unit. It directly attaches to the rear gear train.

10-22-2007, 05:11 AM

Hiway61

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Join Date: Sep 2007

Location: Oregon

Posts: 26

Thanks for the post

I was wondering when engine manufacturer's would get around to capturing that last bit of power from the power plant.
The B-50C/D model bombers had compound engines fifty years ago.

10-23-2007, 01:55 AM

Doghouse

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Join Date: Mar 2007

Posts: 1,009

When I took the engine cover off the inside of my truck,..there was a prototype of this system. 3 rat skeletons on the back of my engine,....guess it didn't work out too well for them :shock:

10-23-2007, 03:04 AM

no_worries

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Join Date: Apr 2006

Posts: 1,154

I love how whenever a company is touting fuel savings they use the phrase "up to". Somehow, I doubt that the average user ever gets his savings "up to" that level.