Noswizard wrote:
As you know I'm using a modified fuel pulsoid to inject liquid lpg on my bike.We have also discussed your wi kit too,I'm pretty sure wi would be of huge benefit with a dry fuel like propane,unfortunately I haven't got any boost pressure to use as a propellant.Steve (rapidblue) has informed us that liquid lpg is a big no no on diesel.On further discussion he explained some of the mishaps he has had and how little lpg is needed.
We've had NO problems using liquid LPG on diesels as long as you have WI and use 'restraint'.
The water tank for your application could be pressurised by a regulated propane arrangement or even gravity or even vac as the nitrous flow increases vac substantially.
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Trev - I dont have to state how well your LPG, H2O and N2O on a tdi works!
My reasons for vapour and recommending rather than liquid -
On the Powershot 2000 system the yanks have, this is a gas system that must use vapour, the first time liquid splashes into the system (liquid in tank sloshes into outlet) Then the engines self destruct - TOO much propane. (typical of any sort of US system really
)
I was going to use a powershot I got from TDIfurby but couldnt guarantee vapour to the unit especially when on track and with its usual driver. So we fitted an LPG system for diesels that runs ALL the time to provide better power and effective MPG (stretch the diesel) same as the powershot system but more tunable and less problems. This increases LPG with boost.
I did consider injecting very small amounts of liquid but could not run this system all the time as the lpg flow needs to vary. (when not WOT and on nitrous)
I also found that this is the safest way as it is more difficult to provide too much vapour than too much liquid. If you steadily increase the vapour on the evaporator unit you will get a tell tale knock before a big problem. On the liquid all the information I could get pointed at a big possibility of easily too much propane so a very quick destruction with not enough warning. Not having enough kit to do very small increases on liquid also contributed to this decision.
This is why I have gone vapour on the diesel and recommended staying away from liquid. Mainly as if you put too much propane in a spark engine it will just bog but on a diesel you get expensive problems!