Fuel Atomisation

[Lasse Langwadt Christensen]

Greg Hermann wrote:
>
snip
> .. Much
> more radical approaches to peak and hold are also possible. A _REALLY_
> competent, older EE guy once suggested to me that I take a peek at some of
> the print hammer throw circuits that were used in the last and fastest
> electromechanical teletypes and printers !! Apparently some of them were
> using a (very) brief pulse of something on the order of 230 VDC to build
> the flux in the hammer coil _quite_ quickly. Bob felt there was absolutely
> no reason why such technology could not be applied to fuel injectors !!
> 
> I rather tend to agree with him, but don't really have the electronic
> espertise to pursue it a lot further!
> 
snip

The same approach has been used for stepper motor drivers, the idea
being 
using as high a voltage as they'll take but limit the current to a safe 
value. 

The simplest way of doing it is to just use a high voltage and a series 
resistor to limit the current, in a car it would probably be a good idea 
to use something more advanced, e.g. PWM current limiting or switching 
between a high and a low voltage, because building a multi ampere, 
high voltage supply with 12 volt input is not that simple

-Lasse
----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org