You've clearly generated a lot of interest!
On 12/26/06, Japie <[EMAIL PROTECTED]> wrote:
Uhmmm, I forgot to mention that the intake channel contains several
water-spraying-nozzles...
There's one in front of the turbo's air intake to cool the turbo and
inside the air duct is the main water injection nozzle.
The total amount of water injected is 30-50% of the fuel amount and is
used as primairy coolant. (since the engine is running without cooling,
except for the pistons wich are cooled with an oil-spray on the bottom)
Another use of water is to cool down the intake air, the turbo wheel can
heat that up to 300cel. and the evapurating water will extract heat.
Humidity If you know the ambiant humidity, the added water and the
temperature, the intake humidity could be calculated.
You will want temperature and differential pressure in the turbo
> environment. Thermocouple temperature sensors shouldn't care about the
> nasty environment and you can do a j tube setup to keep the nasties away
> from the pressure sensor.
A type T for inlet air would also do (if it's cheaper) for exhaust I will
probebly need a type N or a type K.
All are supported, though I think the only Type J or K were actually tested.
That sounds fine for damage control, but I still need a reading for engine
rpm in the main log, when evaluating a run afterwards it's important to
know the relationship between rpm, humidity, turbo-boost and temp.
Rather than store every revolution, you can read the counters with each
of your other measurements and have a good idea of speed throughout.
I'm with Paul on this. Dump the data in raw form then fed that into rrd
> as a second stage. You only have a minute or two of data.
Your both right, dumping raw is bether but rrd was for me a way to
workaround different polling times of the different sensors. (unless owfs
contains time values for syncing the different signals)
Well, owfs gives 1-wire data. Read the system clock and store that for time
base (or use the revolution counters as a time base). There are 1-wire timer
chips but they offer no advantages over just reading the system clock.
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