555 EFI

[rauscher at icst.com]

Chris wrote:
>This sounded like fun so I decided to play with it some, at least on
>paper. I have a question, though. What's the range of adjustment due
>to CTS, and what does that adjustment look like? I'm thinking that
>at "warm" temp or above, there is no adjustment, and below that temp,
>the pulse width gets multiplied by some value. The colder the temp,
>the larger the value. What would that max value be, though? 1.1? 
>1.5? 2.0?  In other words, how much of a % difference does coolant
>temp make in the pulse width? I'm thinking it's 50-100%, which means
>I have to put it at a different place in my circuit.

Cold start/running can be be twice as much fuel. Going from a 14.7 afr
down to 6.0 afr for cold running. For starting, even more fuel.

So i guess a multiplier from 1 warm (no additional fuel), to 2.5 cold range
should be enough.

BobR.

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