# 18 cyl in W shape?

Discussion in '2000 Bugatti 18/4 Veyron Concept' started by carkid9, Aug 9, 2002.

1. #1
Re: 18 cyl in W shape?

vw has a v-5 in the golf in europe

2. #2
Re: 18 cyl in W shape?

actually any car wich says 20v in the back has a v5 engine ... some seats and fiats have v5 engines..<!-- Signature -->

3. #3
How do they get 18 cylinders in a W shape? a W16 is basically two V8's side by side, right? so how do they get two V9's side by side? or is it a V10 and a V8 side by side? or 3 V6's? how does this work?<!-- Signature -->

4. #4
Re: 18 cyl in W shape?

ok, this is just a logical guestimate but i think it would prolly be 2 v-9's, a v-10 and a v-8 would be unbalanced i would think<!-- Signature -->

5. #5
Re: 18 cyl in W shape?

V9? how? 9 divided by 2 = 4.5. do they have two half cylinders? it doesn't make sense.<!-- Signature -->

6. #6
Re: 18 cyl in W shape?

a v9 does not need to be divided by 2, its just 9 cylinders look:
---------
0 0 0 0
=========
0 0 0 0 0
---------
<!-- Signature -->

7. #7
Re: 18 cyl in W shape?

text changed a little there..

=0=0=0=0=
0=0=0=0=0

that would be the cylider placement of a v9 prolly<!-- Signature -->

8. #8
Re: 18 cyl in W shape?

I'm new here and love this site!!!

I dont think that an odd number of cylinders exist like V-5,7,9 and so on, because it would be uneven. But if it does exist I dought they much because it is barely seen anywhere right?

9. #9
Re: 18 cyl in W shape?

your second diagram actually makes sense. thats pretty good. thanx!<!-- Signature -->

10. #10
Re: 18 cyl in W shape?

I'm not an engineer but here's an idea of a W engine
what do you think? weight balanceing is near perfect
dunno if this is what they are going for
hope the .bmp loads i am at work :S<!-- Signature -->

11. #11
Re: 18 cyl in W shape?

my ballgina is in the shape of a W too

12. #12
Re: 18 cyl in W shape?

let me explain something to u guyzz, a V-shaped engine is two sets of cylinders facing each other, but a W-shaped engine is totally different, it's actually three side, the number of cylinders on each side doesn't have to be even, it's like two engines stuck together for example the W 16 has two five cylinder sets facing each other and a 6 cylinder down on the side, it's a bit complicated but it's not two sets facing each other

13. #13
Re: 18 cyl in W shape?

wrong.

you can have 5 valves per cylinder making 4*5=20 so an inline 4, with 5 valves per cylinder is a 20v

14. #14
Re: 18 cyl in W shape?

fedaykin to upload picyures they must be in .jpeg .jpg or .gif

15. #15
Re: 18 cyl in W shape?

yeah the bugatti is a bad daddy
fav band is everclear

16. #16
Re: 18 cyl in W shape?

that is sad... i like bugatti's but you think they could get more than 550hp with a v18........if ford can get 500 with v8's a exotic car company should be able to

17. #17
Re: 18 cyl in W shape?

maybe it could be like

OOOO
======O
OOOO
like with one straight up in the middle at the end

18. #18
Re: 18 cyl in W shape?

The engine must stay balanced so there is no way they would put 2 V9 engines with 4 cylinders on one side and four on the other. What i think is more likely is like this:
0-0-0-0-0-0-
-0-0-0-0-0-0
0-0-0-0-0-0-
Three rows of 6 in this shape: \|/
Hence the name W18.
This formation would work because it is totally balanced although i'm not sure how they would arange the crankshaft(s).

19. #19
Re: 18 cyl in W shape?

I agree.
Besides 18/4 means 18 cyl with 4 valves per each cyl.

20. #20
Re: 18 cyl in W shape?

this engine is fairly pathetic when you consider that more power can be achieved from a modified Evo or STI

21. #21
Re: 18 cyl in W shape?

I dont know if you've realised it yet but 6 times 3 happens to be 18 and there aren't alot of i-6 engines out there so 3 rows of 6 is your answer. Just btw and the 2002 model uses corrado engines <A BORDER="0" HREF="http://www.supercars.net/emoticons.html"><IMG BORDER="0" SRC="http://speed.supercars.net/cboardhtml/emoticons/wink.gif"></A>

22. #22
Re: 18 cyl in W shape?

no one cares that you can take a freaking inline-4 boxer-4 flat-4 or whatever the heck they have and turn up the PSI to get 550 horse power. people who would buy this car don't care about that jap crap

23. #23
Last edited by a moderator: Apr 25, 2016
Re: 18 cyl in W shape?

The idea that 3 inline 6's are correct. Look at the vw "w8 engine" and add more cyliders and you will get the idea.

basically they are saying

source to explain:

http://www.geocities.com/gkurka2001/CarTech/tech_engine_packaging.htm

Copy and Paste From Source:

W18 engine
As 18 is not dividable by 4, you know the W-18 is not derived from VR engines. In fact, it follows the old Audi philosophy of mating 3 banks of 6-cylinder, running the common crankshaft. The drawback is : Among the 3 banks there are 2 large Vee angles. My estimation is 60Â° each, hence a total of 120Â°. For comparison, the W16 is just 15/2 + 72 + 15/2 = 87Â°, therefore the W-18 is a lot wider. In terms of length, the W16 has the same length as a VR6, that is, about the length of 4 and a half cylinder. The W-18 is as long as an inline-6.
As seen in the photo, the W-18 used by Bugatti EB-218 concept car is very big and complex. Two of the banks mate like a conventional 60Â° V6 while the remaining bank lays down to horizontal level. Complex induction manifolds and exhaust pipes run between the banks. (note that the exhaust pipes were not fitted to this prototype, otherwise it would have looked even more complex.)

Obviously, W-18 is not as clever as W-16. Although there is no problem of fitting in the jumbo Bugatti saloon, I must question its purpose. Is it more powerful than a V12 can achieve ? No. Is it smoother than the theoretically ideal V12 ? No. Is it shorter than a V12 ? No. Is it narrower than a V12 ? On the contrary. Is it cheaper to be built ? Never. Is it more spectacular to the riches ? Yes.

How easy the internet can be
step 1: Post topic about engine
step 2: Guess on how it is built
step 3: read posts on how people think it is built
step 4: open alternate internet browser
step 5: go to www.google.com and search w18 engine
step 6: get a definite answer by engineers and professionals.

24. #24
Re: 18 cyl in W shape?

u can have a 5 cyl...
look at those volvos... a lot of them have i-5s

25. #25
Re: 18 cyl in W shape?

OK clearing everything up once and for all.

The W18 engine in this car is made up from 3 rows of 6 cylinders(do the math, 3x6=18!!), that. The 4 in the name 18/4 has nothing to do with number of turbos, nor does it have anything to do with number of rows of cylinders. It is actually the number of vavles per cylinder! Ill Prove it!

In the specs for this car, it says there are 72 valves in total, now, of there are 18 cylinders, and 4 valves per cylinder, and 18x4=72, then i am correct!

Same goes with the 16/4 Veyron engine. The car has 64 valves and 16x4=64. I am correct again.

And the same even goes for the 18/3 Chiron, ill let you do that one on your own because i think you get the point now.<A BORDER="0" HREF="http://www.supercars.net/emoticons.html"><IMG BORDER="0" SRC="http://speed.supercars.net/cboardhtml/emoticons/wink.gif"></A>

Thankyou for your time.

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