[Diy_efi] Intro

Tue Aug 16 14:49:36 UTC 2005

It would be interesting to see a photograph of how they mounted the LED an=
d
sensor=2E

I have been told the cameras on formula one cars use microphones to listen=

to the exhaust note to disply RPM on the TV display=2E

I looked at a nice cheap electret microphone from Panasonic that has good
performance
http://www=2Epanasonic=2Ecom/industrial/components/pdf/em06=5Fwm61=5Fa=5Fb=
=5Fdne=2Epdf
that might be easier to install than an LED + photodiode=2E A frequency
counter could then be used to display the RPM=2E

Original Message:
-----------------
From:  don=2Ebroadus at exeloncorp=2Ecom
Date: Tue, 16 Aug 2005 08:47:24 -0500
To: diy=5Fefi at diy-efi=2Eorg
Subject: RE: [Diy=5Fefi] Intro

The guys that build Turbojet engines out of turbos do the same thing=2E Mo=
st
use an infrared LED and detector from a TV remote control=2E One site has =
the
Schematic,=20

-----Original Message-----
From: diy=5Fefi-bounces at diy-efi=2Eorg [mailto:diy=5Fefi-bounces at diy-efi=2E=
org]
Sent: Tuesday, August 16, 2005 3:21 AM
To: hugh at sol=2Eco=2Euk; diy=5Fefi at diy-efi=2Eorg
Subject: RE: [Diy=5Fefi] Intro

I did a turbo speed sensor for my car, ended
up using a visible (white) light LED and fast
sensor, can put pictures up on my web site if
I can find space or (dare I say it) even a torrent
on my private tracker ;-)

Regards from

Mike
Perth, Western Australia
VL Commodore Fuse Rail that wont warp or melt !
Twin tyres for most sedans
http://niche=2Eiinet=2Enet=2Eau

At 03:40 PM 8/16/05, you wrote:
>Ian,
>
>Interesting tale=2E
>
>What kind of turbo RPM sensor is fitted to your car=3F
>
>Thanks
>
>Hugh
>
>Original Message:
>-----------------
>From: Ian Molton spyro at f2s=2Ecom
>Date: Mon, 15 Aug 2005 18:59:12 +0100
>To: diy=5Fefi at diy-efi=2Eorg
>Subject: [Diy=5Fefi] Intro
>
>
>Hey guys :)
>
>Well I'm not one to leave well alone - if it aint broke, fix it 'till it
>is, right=3F
>
>I've bought a Daihatsu Charade CX 1=2E0 Turbo diesel 3 cylinder=2E
>
>This car has NOTHING unusual under the hood=2E the engine has nothing mor=
e
>than a temperature sensor ;-)
>
>Well so far, I've almost rebuilt the car - the extensive rot at the rear
>has been replaced by shiny new plate, the rear wheelarches are both new
>panels, all is painted and undersealed=2E The front springs are both new,=

>so are the rear brake lines, its got a complete new set of injector
nozzles=2E
>
>So, now the cars roadworthy again, its time to fiddle=2E
>
>I've already planned out the internal stuff - a PC in the radio slot=20
>(already being built) and a whole load of USB bits and bobs including 2=20=

>cameras, usb audio, memory stick for storage, wifi, bt, DVB, GPS, etc=2E
>
>The audio will be a pair of gutted and rehoused labtec 385s (cheap,=20
>sounds good)
>
>lastly, and what brought me here=2E=2E=2E
>
>Im planning to build an EMU, also a USB device=2E
>
>I've got a couple of EZ-USB chips, which will do for the computer side=20=

>of things, should be plenty fast enough=2E
>
>I've already discovered a few things I can sense - MAP, turbo spindle=20
>speed, Oxygen, inlet air temp, fuel flow (how=3F), RPM (already electroni=
c
>for the dash readout), among others=2E
>
>what would be really awesome would be to convert the thing to common=20
>rail, but its an indirect injection engine, so I question how possible=20=

>that might be
>
>I assume knock sensors are pointless on diesels=3F
>
>So, some of the first questions are going to be:
>
>1) What sensors are available=3F
>1a) - that have calibration data / tables available=3F
>1b) - where from=3F
>2) What sensors can be used on a diesel=3F
>3) How do you fit them (ie=2E where - eg=2E how far down the exhaust=20
>manifold should I stuff the oxy sensor)=3F
>4) are any commmon circuits available to drive sensors=3F
>
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>Diy=5Fefi mailing list
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