injector drivers

[John Dammeyer]

Definitely a 'rube' when determining delta TPS in software is trivial.
Thanks for the idea though.

John


-----Original Message-----
From: Clarence L.Snyder <clare.snyder.on.ca at ibm.net>
To: diy_efi at efi332.eng.ohio-state.edu
<diy_efi at efi332.eng.ohio-state.edu>
Date: Sunday, March 07, 1999 2:08 PM
Subject: Re: injector drivers


>>   While the engine is in a steady state condition the combination of
>> MAP and Barometric Pressure sensors along with RPM determine the
initial
>> injector pulse width.  The O2 sensor closes the loop.  Now if the
>> throttle is opened suddenly I know I need to increase the pulse
width.
>>
>This may be a real "rube", but try this on for size. Hook up a small DC
>motor as a generator with a rack and pinion drive connected to the
>throttle. Rectify the output so it is uni-polar (only reads when
>positive) and use a positive output from this device to add an
>additional pulse, or lengthen the pulse on the injectors. As long as
the
>foot is going down there will be a signal, which richens the mix. When
>you reach equilibrium, the pulse goes back to normal. The MAP will
>compensate for the extra load pretty well by itself, and the extra
>enrichment from this device would be automatic and self limiting.
>A detonation sensor could be connected to the same circuit to richen
the
>mixture under "ping" conditions.
>