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I supported Toymods
Location:
Brisbane, QLD
Registered:
May 2002
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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Wed, 13 November 2002 10:07
 
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Well, this is not exactly the miller cycle, but might be interesting to a great degree in its own right (and must say, this is practiced explicitly and implicitly in the motor world, but more or less). It will still be an otto cycle engine, but with better volumetric efficiency.
The intertia in the intake charge and in the case of the supercharged engine, the additional pressure you see in the intake manifold can be harnessed. The idea is to keep the valves open during the inital part of the compression cycle to the point where the airflow would almost stop (before reversal and putting pressure on the supercharger). This is not as simple as saying "until the manifold pressure equals the in cylinder pressure" because of the intake air velocity of the incoming air would allow it to be kept open longer. Faster the airflow, the better. So this would indeed help you increase the volumetric efficiency at higher RPMs (where it is a nice thing to have). However, the problem is without truly variable valve duration what would be "just where the airflow would almost halt" at a higher would be creating a reverse wave at a lower RPM (due to reduced air velocity). However given your configuraion you might be able to establish a set of operational parameters that would give you your desired effect while keeping within a safe range from the undesired effects. Would be interesting to try never the less.
My 2 cents... As for crazy ideas, mate I am all about crazy ideas  Just tend to keep most of my crazy ideas close to home, thats all...
Cheers and good luck! And yes, I'd like to hear more about progress (no not just the outcome) of you experimentation.
Cheers
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mad scientist seeks sensible people to tell him not to try this idea.
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froodogs | Wed, 13 November 2002 01:46 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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RA28 | Wed, 13 November 2002 02:38 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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froodogs | Wed, 13 November 2002 02:51 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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mrshin | Wed, 13 November 2002 04:12 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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Norbie | Wed, 13 November 2002 05:03 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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froodogs | Wed, 13 November 2002 05:17 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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GIN51E | Wed, 13 November 2002 07:09 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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humble | Wed, 13 November 2002 10:07 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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EVOSTi | Wed, 13 November 2002 10:45 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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froodogs | Wed, 13 November 2002 12:32 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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humble | Wed, 13 November 2002 18:40 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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GIN51E | Wed, 13 November 2002 23:13 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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froodogs | Thu, 14 November 2002 00:47 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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humble | Thu, 14 November 2002 01:01 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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froodogs | Thu, 14 November 2002 01:34 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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Hack | Thu, 14 November 2002 02:37 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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RA28 | Thu, 14 November 2002 14:19 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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humble | Thu, 14 November 2002 15:04 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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M.W.P. | Thu, 14 November 2002 16:49 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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froodogs | Thu, 14 November 2002 22:49 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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humble | Fri, 15 November 2002 01:35 |
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Re: mad scientist seeks sensible people to tell him not to try this idea.
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froodogs | Fri, 15 November 2002 03:53 |
