[Diy_efi] Re: Question about speed density, etc.

[Adam Wade]

--- arnie <arnie_ at charter.net> wrote:

>> increasing the throttle opening would have no
>> effect on the acceleration of the vehicle,......

> Are you confusing pressure with total flow?

No.  If you can maintain a constant MAP despite
increases in rpm, then you are delivering the same
amount of air to each combustion chamber on each
revolution, given a similar VE (and at higher rpms,
the VE generally does not change appreciably over a
fairly small rev range).  So your acceleration rate
would be almost 100% consistent with a change in rpm,
without anything else being a factor.  In fact, if you
can maintain a constant MAP of any given number, the
only factors controlling acceleration would be a 2D
table of rpm and VE, as far as I can see (assuming
spark timed for optimum peak pressure timing).

=====
| Adam Wade                       1990 Kwak Zephyr 550 (Daphne) |
|   http://y42.photos.yahoo.com/bc/espresso_doppio/lst?.dir=/   |
| "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     |

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