[Diy_efi] RE: 555 timer controlled EFI

Dale Mahan dalemahan
Mon Jan 23 03:15:40 UTC 2006


Hi,

Concerning:
"The complex circuit with a bunch of sensors for a multi cylinder 
engine, or the simple single cylinder version?"...

I'm more interested in the multi-cylinder EFI version.

Although it may also be good how to make a fuel injection controller for 
a one-cylinder engine.

Thanks,

Dale




John Smith wrote:

> The complex circuit with a bunch of sensors for a multi cylinder 
> engine, or the simple single cylinder version? The simple one is just 
> a monostable 555 timer with a variable resistor and the chip output to 
> a power transistor for the injector.
>
> On a side note for anyone that noticed I havent been active for a few 
> days...I decided to use only a TPS for pulse width variation. I have 
> the TB from a Nissan that starts at 8.6K ohms closed and ends at 2.1k 
> wide open. I'm going to use a trimmer to get that up where I can use 
> it. My pulse width will only vary between ~3mS and 9mS per 
> revolution(batch fire config, albeit only one cylinder).
>
>> Date: Sun, 22 Jan 2006 16:20:46 -0600
>> From: Dale Mahan <dalemahan at charter.net>
>> Subject: Re: [Diy_efi] 555 Timer controlled EFI
>> To: diy_efi at diy-efi.org
>> Message-ID: <43D4053E.5070106 at charter.net>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>> Can somebody send me a copy of the schematic for the 555 EFI controller
>> - or is it still being designed in-group?
>>
>> Thank you,
>>
>> Dale Mahan
>
>
>
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