[Diy_efi] Air/Fuel meter now working! And L-jetronic

[Adam Wade]

--- Astrona <amdcpu at hot.ee> wrote:

> Yeah, but i meant to leave the VAF into the
> atmosphere.

How could you determine how much air was entering the
cylinder if you're measuring air entering the plenum? 
If air pressure in the plenum never changed, this
MIGHT work, but if pressure in the plenum changes
(especially if it changes quickly, which is common on
turbo apps), it CAN'T work properly (unless you add a
plenum air pressure reading somewhere, in which case
why bother with a VAF?)

>>> Although analog ECU's didn't have ROMs, they had
>>> maps.  Mapped by resistors. ;)

>> That's not a map.

> And analog computer is not computer?
> The point is, LE-Jetronic has soldered VE-Table in
> it.

It has a rough approximation of a fueling curve
soldered into it.  It's not a VE table, and it's not a
map, which would imply discrete settings for
load/speed points.  If there was an array of resistors
that was checked, like you'd find on a digital ECU's
EPROM, THAT would constitute a map.

| 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 |


		
____________________________________________________ 
Yahoo! Sports 
Rekindle the Rivalries. Sign up for Fantasy Football 
http://football.fantasysports.yahoo.com