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I have been able to set up
an injector pulser circuit,
which gives a variable
output, using a cheap C2331
transistor which is way too
light duty. This circuit
only runs between 20 and
40 milliseconds as
I am only running a 12v
relay at the moment,
which freaks out when
dialled up to 50hz.
To get the more complicated
8 millisecond circuit with
1 sec pulse, 5 second pulse
and continuous output to
drive a high voltage diesel
injector is gunna be expensive.
I will have to invest in a bigger
bread board and a heavy
mosfet, some big capacitors,
some petrol and diesel
injectors and/or maybe
a transformer.
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I am a bit disappointed
with some switches I
got through Jaycar.
I have spent a bit of
time getting the Injector
pulser circuit working
on a bigger bread board.
I was getting weird
inconsistent results which
were driving me nuttier.
I traced it back to the
mini switches. I will have
to source some better ones.
I have also bought a high
amperage mosfet and
will set about designing
a circuit that suits the
CRD injectors.
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I have obtained some good
switches and redesigned
the timing circuit to
give me a continuous
pulse, a 1 second pulse
and a 5 second pulse.
The original circuit was
so sensitive, that attaching
the meters and oscilloscope
would affect the operation.
At this stage I only have
a relay as a substitute
for a 12 volt injector.
I still have to design
the high voltage output
to run the Piezo Injectors.
What I need now are
a CRD injector, a DI injector
and late and early model petrol injectors.
They have to be electrically
sound, but it doesn't matter
if the nozzle or inlet fitting
have been damaged.
So if you know of anyone
that has any, please PM me
thank you.
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1 Attachment(s)
Since I have not had a computer to research the circuitry involved with the DI and CRD drivers I have finished the 12v 18 amp pulser and the box to house it all in. I won't start on the pipework and gauges until I complete the electronics, so I have shelved the project at the moment. I also spiked the hand held oscilloscope so I need to invest in a more robust unit, so that has thrown a spanner in the works as well.
