[Diy_efi] Air/Fuel meter now working! And L-jetronic
espresso_doppio at yahoo.com
Thu Jun 16 19:30:10 CDT 2005
--- Astrona <amdcpu at hot.ee> wrote:
> If we have 50cc exhaust gases in 500cc cylinder, the
> intake air is 450cc.
Assuming that none of the air got pushed back out by
the exhaust gases, and also assuming they are at the
same pressure (it's pretty much guaranteed they are
not). Further, the amount of exhaust dilution will
change the burn rate, which might dictate a change in
fueling to accomodate it optimally.
> At the exhaust valve, there is already A-F-mixture
> not air, if some of the mixture goes to the exhaust,
> the AFR won't change.
That's assuming that A) all the fuel is delivered well
before valve overlap occurs, and B) homogeneity of the
imcoming mixture is perfect, and does not change based
on valve opening, exhaust velocity and temperature,
I can assure you, these things are all important in
determining how much fuel should be delivered.
| 82 Honda CX500 Turbo (Cassandra) 90 Kwak Zephyr 550 (Daphne) |
| "It was like an emergency ward after a great catastrophe; it |
| didn't matter what race or class the victims belonged to. |
| They were all given the same miracle drug, which was coffee. |
| The catastrophe in this case, of course, was that the sun |
| had come up again." -Kurt Vonnegut |
| M/C Fuel Inj. Hndbk. @ Amazon.com - http://tinyurl.com/6o3ze |
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