The Technical Questions Thread

[jitendra]

Those 6 eye-appealing tubes are part of the induction system, they each feed down into a continuation of separated ducts (moulded internally in the intake manifold, situated between the 'V') which distributes the intake flow left/right into each respective cylinder

[henk4]

Those 6 eye-appealing tubes are part of the induction system, they each feed down into a continuation of separated ducts (moulded internally in the intake manifold, situated between the 'V') which distributes the intake flow left/right into each respective cylinder

which post are you referring to?

[NSXType-R]

Hijack time.

Why does this engine have the 6 exhausts or whatever the chrome things are in a row when it is a V6? Wouldn't it be more normal to have three on each side? Am I crazy? Is this peculiar in any way? Help!

Not a problem. In fact, I have a question myself.

What are individual throttle bodies?

How does it help the engine produce more power?

Can someone attach a photo too to help me out?

Thanks.

[clutch-monkey]

The chromed pipes are the induction pipes, not the exhaust. You can just about see the exhausts on the nearside bank of cylinders, the red curved pipes below the cylinder head cover, and it will indeed have three exhausts on each side.

question - how woud the exhausts cope with a similar chrome finish - would the chrome simply degrade due to heat?

Not a problem. In fact, I have a question myself.

What are individual throttle bodies?

How does it help the engine produce more power?

Can someone attach a photo too to help me out?

Thanks.

ooh that's a good one. would also like to know

[NSXType-R]

question - how woud the exhausts cope with a similar chrome finish - would the chrome simply degrade due to heat?

ooh that's a good one. would also like to know

Chrome is pretty weather resistant right? It shouldn't degrade much due to heat then. Sometimes there are a lot of chrome parts under the hood, so it shouldn't degrade much. Chromed parts are electromagnetically plated right? It should stick very well. I could be wrong though.

[clutch-monkey]

Chrome is pretty weather resistant right? It shouldn't degrade much due to heat then. Sometimes there are a lot of chrome parts under the hood, so it shouldn't degrade much. Chromed parts are electromagnetically plated right? It should stick very well. I could be wrong though.

i think you're right, i might be confused with something else - just remembered they make chrome lined rifle barrels, so it must be durable.

[jediali]

What are individual throttle bodies?

this is a bmw i6:

you can sea an individual throttle body for each cylinder. This ensures equal intake conditions to each cylinder allowing higher combustion performance paramaters. This is better than a single throttle butterfly valve leading to multiple cylinders as in:
http://www.itrsport.com/images/tech_...rotle_body.jpg
or
http://www.supercar-engineering.com/...rottleBody.jpg

If one can be sure that each cylinder is getting an equal amount of air and the air itself is behaving similarly (swirl characteristics, spark centre, hotspot etc) in all 6 cylinders the compression ratio can be a little higher and the valve timing can be a little more precise (in intake/exhaust gas overlap and inertia filling) thus improving thermal efficiency and burning more fuel more effectively. Therefore more powAr

[jediali]

Actually the 6 intake pipes leave from a common plenum and go down into the V6 to deliver an inlet to each combustion chamber as in:


This is a very pretty engine!

[cargirl1990]

Actually the 6 intake pipes leave from a common plenum and go down into the V6 to deliver an inlet to each combustion chamber as in:


This is a very pretty engine!

had that engine as a quiz for naming the engine parts in Grade 11, Mechanics 10 course. anyways, how does a W16 engine work and what does it look like?

[LeonOfTheDead]

had that engine as a quiz for naming the engine parts in Grade 11, Mechanics 10 course. anyways, how does a W16 engine work?

specifically, what do you want to know?
I think there was at least a thread dedicated to the Veyron's W16 somewhere...

[cargirl1990]

specifically, what do you want to know?
I think there was at least a thread dedicated to the Veyron's W16 somewhere...

just how a W16 worked, where the pistons are is what puzzles me. but i think i have a bit of an idea on how it works though, i think.

[NSXType-R]

just how a W16 worked, where the pistons are is what puzzles me. but i think i have a bit of an idea on how it works though, i think.

Imagine two V8s stuck together, sharing the same crankshaft and that's basically a W16.

[ruim20]

had that engine as a quiz for naming the engine parts in Grade 11, Mechanics 10 course. anyways, how does a W16 engine work and what does it look like?

You can give it a search in youtube, you'll find great animations that will clear that

[culver]

For their next trick they can explain why this V6 has 12
http://www.members.cox.net/rdgrauman/finiahed2.jpg

(PS, the 2.5L Ford Duratec V6 has 12 for the same reason)
http://www.supercars.net/servlets/PW...esey/4car1.jpg sorry the engine is a bit dirty in this picture

[Jack_Bauer]

For their next trick they can explain why this V6 has 12
http://www.members.cox.net/rdgrauman/finiahed2.jpg

(PS, the 2.5L Ford Duratec V6 has 12 for the same reason)
http://www.supercars.net/servlets/PW...esey/4car1.jpg sorry the engine is a bit dirty in this picture

Variable length intake manifolds.

There is a long and a short pipe for each individual cylinder, and the intake switches between the two depending on revs - long pipe for low revs and short pipe for higher revs (I think!).