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Post by racket on Apr 10, 2014 16:30:00 GMT -5
Hi Mike
Welcome :-)
Once the diesel spray is ignited you can turn off the ignition as well as the propane pilot light , as long as the spray of diesel is reasonably atomised and is continuous , she should continue to run, evaporators are only needed with very low fuel pressures and no atomisation , the fuel is simply fed/poured into the evaporator .
You will need fuel pressure considerably higher than P2 pressures for reasonable atomisation , so if you've got 30 psi coming out of the compressor you'll need >30 psi just to get fuel moving into the engine , you then add on the pressure required to produce the desired fuel flow rate to produce the atomisation , any pressure up to ~500 psi at full throttle , I've used fuel pressures up to 1,300 psi on occasion with a spray nozzle , but settled on ~750 psi for my bike build.
Cheers John
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Post by angryseabass on Apr 11, 2014 11:42:48 GMT -5
Hi Mike Welcome :-) Once the diesel spray is ignited you can turn off the ignition as well as the propane pilot light , as long as the spray of diesel is reasonably atomised and is continuous , she should continue to run, evaporators are only needed with very low fuel pressures and no atomisation , the fuel is simply fed/poured into the evaporator . You will need fuel pressure considerably higher than P2 pressures for reasonable atomisation , so if you've got 30 psi coming out of the compressor you'll need >30 psi just to get fuel moving into the engine , you then add on the pressure required to produce the desired fuel flow rate to produce the atomisation , any pressure up to ~500 psi at full throttle , I've used fuel pressures up to 1,300 psi on occasion with a spray nozzle , but settled on ~750 psi for my bike build. Cheers John Hi John
Thanks so much for your reply ,My Subaru fuel pump only puts out 60psi I think , so if P2 pressure is 30 psi then I will only have 30 psi being available to atomize the fuel. I will be making some evaporator tubes this weekend , if I can find some time
Thanks again for your help
Mike
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