TwinTurbo.NET: Nissan 300ZX forum - I read your post
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Subject I read your post
     
Posted by maglito on February 01, 2006 at 11:40 PM
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In Reply To Re: better better auto nesting of replies would be nice posted by Kenny on February 01, 2006 at 07:07 PM
     
Message So was I, after the first sentence. Read the post again.

The first sentence made no sence in the context of the discussion, the second sentence is just plain wrong (but discussing temp is slightly OT vs VE).

The lines shift to the right.

I think that is your guess, and while I agree they will be to the right of where they are now but I don't think its only a simple shift.

That is mine and I think Dee's question. How does increasing the flow of the engine (VE effect how we interpret those charts).

My only point is:an engine with a HIGHER VE will have lower EGTs at the same power level. VE is a percentage NOT a unit of density of air in the cylinder.
Now, you seem to agree with me.

By consume, I mean consume. Your point sounds valid to me.
...
That's completely incorrect. The higher the number of oxygen molecules in the combustion chamber, the higher the EGT.


Again VE is a percentage that goes up when you remove restriction in the intake tract not a UNIT of oxygen in the cylinder. And while at first that seems strange given the definition of VE, it does make sence. So my point above still stands and is not incorrect.

You just added a qualifier that was not in my post. The fact remains that engines with differing VEs will not make the same power at the same rpms, so your point is moot.


I never said anything about the same RPMs. I said the same flow with different VEs. But, the system is more complicated and feeds off itself too much to make "cut-out" statements like mine above, so in a way we are both right I guess.

The concept of VE on a forced induction engine is so difficult because it doesn't take into accout temperature and more importantly pressure insofar as how it really works on a FI car.

Really, IMO this should be discussed in terms of mass flow rate and not VE because by definiton VE is all over the place on an FI car varible with temp/and preasure.

There has to be a better way to manage all this interms of reducing intake flow restrictions.

Kenny, I just want to take a minute to thank you for your input here. Obviously no one else has the right combination of time/desire/knowledge to chime in. Thanks for at least furthing the conversation in that it gave me incentive to research more outside of this forum to learn more about all of this. It will all make sence to me someday....

Once again Kenny, I am grateful for your time man.



m a g l i t o
parts are FINALLY here - engine is going back together NOW
sig photo by me effects by ZXRider(SoCal)

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