New CD170

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blsewardjr
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New CD170

Post by blsewardjr »

Tecnam has certified a 170hp version of the CD series diesel in its P2010 aircraft -- https://www.avweb.com/aviation-news/tec ... p2010-tdi/
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Re: New CD170

Post by TimS »

Looks like a nice competitive trainer. I wonder how Piper has been doing selling their diesel planes.

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Re: New CD170

Post by Soareyes »

Is this CD-170 a new engine or just a software tweak of the CD-155?

Should Austro be worried? The new CD-170 makes 170 hp and weighs 344 lbs. An Austro AE300 makes 168 hp and weighs 414 lbs. Why get an Austro? Any advantages remaining for the Austro engine?

Will the CD-170 be available for retrofit in Diamonds with CD-135/155/Thielert variants?
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Re: New CD170

Post by TimS »

Based on the article, no this is not just a software change. This involved a common rail change, plus likely water pumps and cooling systems to handle the additional heat, and then the ripple effects into the gearbox and other down stream parts.
The largest delta between AE-300 and CD-170 is the TBR vs TBO concept with overhaul expected to be much cheaper than replacement; combined with AE-300 having a longer life to begin with. To be fair, most pilots will not own a plane long enough to notice; but training sites will. And this plane is aimed straight at the training market.

As for retrofit; someone would need to develop the STC.

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Re: New CD170

Post by Davestation »

The specs I read on the continental website showed that the 170 had the same max continuous as the 155, so if the only difference is takeoff power is this thing just purpose built for heavier aircraft or shorter runways?
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Re: New CD170

Post by ememic99 »

I don’t think DA42 would benefit from CD-170. CD-170 is heavier than CD-155, has lower critical altitude (6000 ft vs 8000 ft) and lower TBR (1200 vs 2100) while having practically same continuous power.
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Re: New CD170

Post by CFIDave »

ememic99 wrote:
Thu Jun 18, 2020 4:25 pm
I don’t think DA42 would benefit from CD-170. CD-170 is heavier than CD-155, has lower critical altitude (6000 ft vs 8000 ft) and lower TBR (1200 vs 2100) while having practically same continuous power.
Compared to the CD-155, it appears that the CD-170 software simply applies a higher turbo boost, where the same size turbocharger on both engines can maintain this higher boost only to a lower altitude.

This is similar to Austro engines, where the DA62 AE330 engine's additional turbo boost can be maintained only to a lower critical altitude (about 12,000 feet) compared to the slightly less powerful AE300 engine of the DA40NG and DA42 -- since the same size turbo is used on both engines. Above that altitude, both engines produce about the same horsepower.
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Re: New CD170

Post by Davestation »

ememic99 wrote:
Thu Jun 18, 2020 4:25 pm
I don’t think DA42 would benefit from CD-170. CD-170 is heavier than CD-155, has lower critical altitude (6000 ft vs 8000 ft) and lower TBR (1200 vs 2100) while having practically same continuous power.
That’s weird, I didn’t notice that. I wonder why that is.

The TBR on the 155 started at 1200, I’m sure this one will follow the same path
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Re: New CD170

Post by TimS »

Davestation wrote:
Thu Jun 18, 2020 7:22 pm
ememic99 wrote:
Thu Jun 18, 2020 4:25 pm
I don’t think DA42 would benefit from CD-170. CD-170 is heavier than CD-155, has lower critical altitude (6000 ft vs 8000 ft) and lower TBR (1200 vs 2100) while having practically same continuous power.
That’s weird, I didn’t notice that. I wonder why that is.

The TBR on the 155 started at 1200, I’m sure this one will follow the same path
The turbo is likely the same. Since they are using more boost, it runs out of headroom earlier.

Tim
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