[Diy_efi] Ultrasonic Injector - by Eaton/Bosch ?

[Le Chevalier Noir]

Hello

The piezo injector exist! I saw it! I work with them too (buiding the
electronic driver control unit)
Siemens is the first manufacturer who built piezo injector (for Diesel
Common rail system, or possibly Gasoline Direct Injection). French Peugeot
and Citroen cars are equiped with them. The New Ford Fiesta too and a lot of
other Ford cars...
Bosh works on this technology too (I imagine Dephi too, and Sagem tried too)
but they are not on the market today...

Regards,

le Chevalier Noir

----- Original Message -----
From: "Mike" <erazmus at iinet.net.au>
To: "List for general do-it-yourself EFI talk" <diy_efi at diy-efi.org>
Sent: Friday, February 21, 2003 9:23 PM
Subject: [Diy_efi] Ultrasonic Injector - by Eaton/Bosch ?


> Hi Chaps,
>
> Some 15 or so years back (or maybe 20 <shrug>), I saw an article
> in a auto news mag about a very simple fuel injector which consisted
> solely of a tube with spring loaded ball and the housing built
> from a piezo-restrictive material or an effective ultrasonic
> transducer with optimum shape of your classic exponential horn.
>
> Fuel pressure and the spring would hold the ball against the
> front of the seat and no fuel would flow, when the transducer was
> excited by your classic chopped waveform at around 50KHz then the
> ball would vibrate sympathetically and release fuel in nice
> small droplets more finely atomised than for your existing
> injector.
>
> This device was being developed by Eaton (GMBH) and there was
> rumour it was bought out by Bosch.
>
> I sent a letter to Bosch some 4 to 6 years back and got no
> reply :(
>
> Anyone know what am I talking about and offer any update on this ?
>
>
> Regards
>
> Mike Massen
> Hm 08 9444 8961,  Mb 0438 048961
>
> Some power stuff here: http://www.iinet.net.au/~erazmus
>
> Ancient Sufi saying:
>         "Should your God save you from adversity, choose another God"
>
>
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>


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