Quote:
Originally Posted by p_b82
A set I had made up a while back.
6 smaller holes & a higher break pressure - you were going to test them for me, but took the car off the road before you had a chance.
Wouldn't re-sizing the holes on the SDI spec nozzles just bring us right back into the 200 issues with poor droplet size and atomisation though?
We've been there - 200's just aren't suitable for a VNT setup due to the soot they emit due to the poor combustion we get with them.
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Ah ok, I remember now. Was 2 years ago that now, where does the time go?!
Just got my clutch delivered back from CG today so can pop the engine back in now.
I'm not convinced the orifice size is the problem with the 200 tdis, I have mapped them to give almost a smoke free burn (and very little power). I think the problem is more the position of the holes rather than the size of them.
What I want is the standard spray pattern with a larger orifice. Injection stage pressures can be played with to help with atomization (if needed), I found an interesting paper on this once. But of course that will put more load on the pump.