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Why Turbos and inline engines

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Why Turbos and inline engines

 
Old 10-26-2018, 08:58 AM
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Why Turbos and inline engines

Just read this article in the NY Times which I found interesting.

It explains the new i6 48 volt hybrid engines.

The article is:"Turbocharging Jumps From Racetrack to Cul-de-Sac"

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Old 10-26-2018, 09:31 AM
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I know this thread has very little to do with the E class specifically, at least not until the next M256 comes into the W213. That said a few things stood out to me. Only $200 to add a turbo? This is offset by the cheaper development costs for an I6 vs a V6? This last part is interesting. Why? MB has decided to use an I6 for their MHEV platform "launch", but yet VAG is still sticking with a V6 + MHEV.

I'm not insinuating one is better or worse, or one is the right way or the wrong way to go about this, just that it's different, and it made me wonder.
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Old 10-26-2018, 09:41 AM
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Just my take:

The main advantage of a V6 over an inline 6 is space which is important in a FWD vehicle.


The i6 is a balanced engine, while the V6 is not. The valve train on the I6 is half that of an V6.


I believe BMW stayed with the i6 and never went to the V6.
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Old 10-26-2018, 09:45 AM
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Originally Posted by JTK44 View Post
Just my take:

The main advantage of a V6 over an inline 6 is space which is important in a FWD vehicle.
.
Ok, and this is an interesting point. Audi, with its 4 bangers over the years, have mounted the engines longitudinally on the Audis but transversely on the VWs. Don't ask me why - I have no idea.

With the I6/V6 thing, On the A6 and up, these have ginormous engine bays, capable of fitting an, alleged, V12 (on the D5 A8). I still don't get Audi's decision making on a V6 vs an I6. And you gotta keep in mind, MB has always suffered from lower margins than Audi/BMW, and something Zietsche was always cognizant amount. Maybe this is a way to fix that, but that said - for some reason, Audi's still sticking with a more expensive (allegedly) V6 design.

Weird.
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Old 10-26-2018, 09:46 AM
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Here's an interesting article on this subject: https://www.roadandtrack.com/new-car...56-inline-six/
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Old 10-26-2018, 10:05 AM
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Here is the article:
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