Ah, doing something overly complicated for the sake of doing something overly complicated. I like your style! Life isn't worth living unless you're pushing what you know and can do!
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Originally posted by squidmaster View PostAlthough the diagram you made is different than most twin charged setups I've seen. Any particular reason?
This gives a pretty good explanation of what can be done
http://www.torquecars.com/tuning/twincharging.php
Im planning to run them in series where the boost is compounded, where the last diagram is ran inline where ideally you would want the supercharger to stop providing boost once out of its efficiency range.
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Interested to see how you overcome the hurdles of twincharging. Ideal set up would be to have the supercharger over-driven to produce boost at idle. That boosted air should run non-intercooled straight into the intake of the turbo. This allows the turbo to be "pre-spooled" (i.e., limiting "lag"). After the supercharger can no longer push enough air into the turbo (maybe 12psi?), have a valve that opens up to atmosphere allowing the intake of the turbo to breathe freely (and supercharger's air can just dump somewhere else?) and continue producing boost on it's own. Then run your charged air through an intercooler into the intake of the engine.
I probably sound crazy (it's because I am). We have been toying around with the idea at the shop I work at for a while on our shop truck (can you say mid-engined compound cummins turbo diesel '49 ford?) Wait, WHAT?-Pierre
1987 535is
1988 325is
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Superchargers tend to run quite hot at high rpm thus the loss in power in the higher rpm range as well as the parasitic loss. This is the way Denny runs his supercharger and he is seeing his air temps around 90 Degrees F if I remember correctly.
Im looking into My first setup idea right now, this also gives a wicked good explanation on more twin charging and why its setup a certain way. Its long but informative.
http://vimeo.com/12685276#at=0
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Originally posted by e30nub View Post
I probably sound crazy (it's because I am). We have been toying around with the idea at the shop I work at for a while on our shop truck (can you say mid-engined compound cummins turbo diesel '49 ford?) Wait, WHAT?
There is alot of possibility of what can be done, Im sure Ill go through a few ideas then change alot along the course of the build once the supercharger is in.
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Originally posted by TheTacoMan View PostNow thats something Id like to see.
Oh and I'm definitely subscribing to this thread!-Pierre
1987 535is
1988 325is
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Originally posted by TheTacoMan View PostIts not about peak Hp so to speak. Its about having the best of both worlds and me wanting to be overly complicated
FWIW though I wasn't talking about peak hp at all. The EFR series is known for excellent transient response and mid range torque as they were developed for road course racing.-Nick
M42 on VEMS
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