Search | Car Forums | Gallery | Articles | Helper | AF 350Z | IgorSushko.com | Corporate |
| Latest | 0 Rplys |
|
Engineering/Technical Ask technical questions about cars. Do you know how a car engine works? |
Show Printable Version | Email this Page | Subscribe to this Thread |
|
Thread Tools |
03-15-2002, 02:57 PM | #1 | |
AF Enthusiast
Join Date: Mar 2002
Location: Toronto
Posts: 615
Thanks: 0
Thanked 0 Times in 0 Posts
|
A question
Since flat 12s take up so much same, is it possible to create an inline 12-cylinder engine lying on its side (like a flat 12, only a little more than half the width)?
What about smoothness, structural strength, heat dissipation? TIA EDIT: Forgot to mention.. Would it be possible to use a flat crank in such an engine?
__________________
Some things are impossible, people say. Yet after these things happen, the very same people say that it was inevitable. |
|
03-15-2002, 03:41 PM | #2 | |
AF Enthusiast
|
An I12? I'm sure it would be one really long engine. I've never heard of any car actually using such an engine. I don't see how it could be smooth either.
__________________
|
|
03-15-2002, 04:23 PM | #3 | |
AF Enthusiast
|
Crank and cam torsional vibrations would probably be one of your bigger problems with such an engine. The rest of your concerns would depend on the details of the particular design. I would guess that a cruciform crank would provide smoother operation than a flat one in this application. Why were you particularly interested in using a flat crank? You could certainly fully balance the flat-crank, I12 version, if you wanted to put the effort (and mass) into it. You might have to get "clever" with the torque recoil, though...
__________________
Come on fhqwhgads. I see you jockin' me. Tryin' to play like... you know me... |
|
03-15-2002, 09:03 PM | #4 | |
AF Enthusiast
Thread starter
Join Date: Mar 2002
Location: Toronto
Posts: 615
Thanks: 0
Thanked 0 Times in 0 Posts
|
What's a cruciform crank?
__________________
Some things are impossible, people say. Yet after these things happen, the very same people say that it was inevitable. |
|
03-16-2002, 01:20 PM | #5 | |
AF Enthusiast
|
cross-shaped.
__________________
Come on fhqwhgads. I see you jockin' me. Tryin' to play like... you know me... |
|
03-17-2002, 11:06 AM | #6 | |
AF Enthusiast
Thread starter
Join Date: Mar 2002
Location: Toronto
Posts: 615
Thanks: 0
Thanked 0 Times in 0 Posts
|
I must admit, I'm not quite visualizing a cruciform crank...
__________________
Some things are impossible, people say. Yet after these things happen, the very same people say that it was inevitable. |
|
03-17-2002, 02:20 PM | #7 | |
Writer Mod
Join Date: Jan 2001
Posts: 714
Thanks: 0
Thanked 0 Times in 0 Posts
|
I think the problem here is that not everyone is completely familiar with the basics behind engine firing order, smoothness, and inherent balance. Check here for the best online article you'll ever read on the subject (it's several pages long).
Beyond that, I can think of no single advantage an inline 12 has over a V12 other than width, which isn't terribly important in this case. The inline is not at all space efficient, I can't imagine how it'd fit in a modern high performance platform and still leave room for the drivetrain and passenger compartment. And we've already gone over the flat 12 problems, so why exactly aren't you interested in V12's 454Casull?
__________________
'03 Corvette Z06 '99 Prelude SH |
|
03-18-2002, 04:38 PM | #8 | |
AF Enthusiast
Thread starter
Join Date: Mar 2002
Location: Toronto
Posts: 615
Thanks: 0
Thanked 0 Times in 0 Posts
|
It's not that I'm not interested in V12s (especially after reading that they were fully balanced ) I was just interested in exploring the different setups.
__________________
Some things are impossible, people say. Yet after these things happen, the very same people say that it was inevitable. |
|
03-18-2002, 05:04 PM | #9 | |
Writer Mod
Join Date: Jan 2001
Posts: 714
Thanks: 0
Thanked 0 Times in 0 Posts
|
Oh OK, cool. Definitely check that link out then, it's a fantastic resource on the basic pros and cons to different engine cylinder configurations IMO.
__________________
'03 Corvette Z06 '99 Prelude SH |
|
|
POST REPLY TO THIS THREAD |
|
|