[Diy_efi] Ultrasonic Injector - by Eaton/Bosch ?

[Mike]

Well well - how about that ?

Any chance there is a picture about on the net, any idea of a
part number, costs. Which year/model Ford Fiesta as I might
try to track that down re local wreckers...

It would be really interesting to see what they look like and
what sort of frequency the production units operate at ?

rdgs

mike



At 03:36 PM 21/2/2003 +0100, you wrote:
>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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