Can anyone tell me. In this automotive industry, why doesn't have the engines like V7, V9, V11 and so on?

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Juha Arkkukangas

My guess would be you wouldn’t be able to balance those kind of engines.

07/17/2015 - 15:41 |
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AMG321

Needs to be a equal amount of cylinders on each side.

07/17/2015 - 15:48 |
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Anonymous

In reply to by AMG321

Wouldn’t inlines work for odd numbered engines or does it still need to be an even number

07/17/2015 - 16:06 |
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Anonymous

It’s a matter of balance at the crank. You’d get really oddly timed powerstrokes (a 7 cylinder engine would be a fractionated number of degrees (102.857142rep) between events), oddly timed firing order since you normally fire two at a time so one will fire alone, and a ton of engine vibration; in addition to a bunch of power lost as a result, especially when you start adding more and more cylinders to it.
That’s what I3 engines are really the only odd-cylindered cars used today. I5 motors were used until a few decades ago, but big I7 and I9 engines died back in the 50s.
Also, if you have the room for a V7, or V9, or V11, there’s no reason not to go for the extra displacement.

07/17/2015 - 16:05 |
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Anonymous

In reply to by Anonymous (not verified)

Understood :D

07/17/2015 - 16:58 |
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Anonymous

Vw did have a v5 in the old touareg to was exactly half the v10 and the previous gen focuses has a straight 5

07/17/2015 - 16:48 |
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Anonymous

Its all about crank balance and firing order, marine diesel engines have straigth 14, straigth 9 and so on.
The wierd vw "v5" is more like a double straigth 5, 3 sylinders on one side and 2 on the other.
A straigth 6 sylinder is the most balanced engine there is, they dont need any help rotating.
there are a lot of good videos on the subject if youre in for it.

07/17/2015 - 17:09 |
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