Duramax Diesels Forum Truck of the Week
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Old 11-05-2018, 06:37 PM
CGiron CGiron is offline
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Default Achates they really came with 44 mpg at 6 Nov 2018

https://www.youtube.com/watch?v=usma...ature=youtu.be

44 mpg, 270 hp and some 479 lb/ft of heavy torque

From NAIAS 2018
But the bigger bombshell was his announcement that of the nine automakers who have signed on as development partners, at least one of them has begun tooling up to build an opposed-piston engine in volume.
GM or Ford?
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Old 11-05-2018, 07:44 PM
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Here is a good review and explanation of the engine. Unfortunately like many other concepts and prototypes it has a low probability of actually making it into a production vehicle

https://youtu.be/UxON-HIlz5E

PS: this thread is likely in the wrong location
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Old 11-05-2018, 10:38 PM
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If someone is actually tooling up to build that design it probably won't be GM. GM has managed to stay competitive with every engine technology change while still using the same basic push-rod design. It is kind of impressive, really.

The part I really want to know is how they are dealing with NOx emissions. They admit super high combustion and exhaust temperatures (hence the high fuel economy), but than means high NOx. I bet they use a SCR system like the 2011+ diesels. Diesel Exhaust Fluid: now for your gas truck!

Sorry if I seem cynical, but I have yet to see any evidence this will do what they say while meeting emissions, let alone longevity, production costs, etc. But we will see, maybe I'll eat my words.
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Old 11-05-2018, 11:00 PM
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That thing sounds hideous. I canít see it making it to production like that.
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Old 11-06-2018, 12:41 AM
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Kind of sounds like a lawnmower
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Old 11-06-2018, 03:56 AM
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Quote:
Originally Posted by DAVe3283 View Post
If someone is actually tooling up to build that design it probably won't be GM. GM has managed to stay competitive with every engine technology change while still using the same basic push-rod design. It is kind of impressive, really.

The part I really want to know is how they are dealing with NOx emissions. They admit super high combustion and exhaust temperatures (hence the high fuel economy), but than means high NOx. I bet they use a SCR system like the 2011+ diesels. Diesel Exhaust Fluid: now for your gas truck!

Sorry if I seem cynical, but I have yet to see any evidence this will do what they say while meeting emissions, let alone longevity, production costs, etc. But we will see, maybe I'll eat my words.
The guy states high in-cylinder egr
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Old 11-06-2018, 04:58 AM
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Sounds awful...
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Old 11-06-2018, 07:29 AM
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Sounds like a 2-stroke diesel lol.
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Old 11-06-2018, 02:32 PM
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I'd drive it.
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Old 11-06-2018, 03:23 PM
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I'd drive it.
Me too. If they build it; it might be my next truck.
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Old 11-06-2018, 04:36 PM
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Quote:
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Me too. If they build it; it might be my next truck.
I would have no problem driving one either

If the HP and torque numbers are what they say and the MPG is true, it would make a great daily driver
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Old 11-06-2018, 04:50 PM
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I'd guess ford bc the test bed is an F150 and I'd bet they needed help with systems integration...
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