[Diy_efi] injector advance

[Gary]

Max pulsewidth (In milliseconds) = 120,000 / RPM

120,000 = 60 sec. * 1000 * 2 (rpm to complete 4 cycle events) 
1 millisecond = .001 seconds

DC (duty cycle) = 
logged pulsewidth / max pulsewidth possible * 100 (%)

DC is affected/influenced by the capacity of the injector.  IOW, 
a change to a larger capacity injector will lower logged PW, and
thus DC.

I believe 24% figure is influenced with the understanding, more than 
one injector driven by same driver.  That reply was not intended for 
public display, btw.  A hasty error on my part, and apology to Rod.    

GAS


----- Original Message ----- 
From: "Gianmarco Rizzo (BE/EAS)" <gianmarco.rizzo at ericsson.com>
To: "'A list for Do-It-Yourself EFI'" <diy_efi at diy-efi.org>
Sent: Thursday, August 05, 2004 10:38 AM
Subject: RE: [Diy_efi] injector advance


> so above 24% duty cycle the injection switches to batch? 
> 
> -----Original Message-----
> From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]On
> Behalf Of Gary
> Sent: Donnerstag, 5. August 2004 17:29
> To: A list for Do-It-Yourself EFI
> Subject: Re: [Diy_efi] injector advance
> 
> 
> Yes!  When the firing becomes batch (no longer sequential), are all
> valves in the same relationship with the crank?  No!  This implies
> 720* of crank rotation are available for injector firing.
> 
> GAS
 


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