IAC

[peter paul fenske]

PULSE WIDTH MODULATOR.
A double 555 produces a variable PW.
The wider the pulse the more the leak around the throttle
the higher the idle speed..

This prob won't work since these valves produce too
small a leak.

ccp is canister purge..

gl:peter

At 07:24 AM 12/9/97 -0600, you wrote:
>At 02:41 PM 12/8/97, peter paul fenske <pfenske at direct.ca> wrote:
>>Hey Gang
>>
>>Another thought why not use the vacum pwm modulator 
>>that gm uses to control egr ccp ect. xrysler also uses em
>>
>>A double 555 cct can produce an adjustable pwm from 0 to 100%
>>Use a LM2917 as a tach to voltage converter and then
>>control your idle via a ref voltage. Gee we could use 
>>a ctc to alter this ref as well as ac ps ect
>
>interesting concept .... what's ccp ? (looks like CCCP   ;-)
>
>I'm not familiar with these modulators, tell me more ... like what
>to ask for, how they work ?
>
>
>
>