Quote:
Originally Posted by teoman
Heated alcohol will need to be in a pressure vessel. Very mild pressure, but still pressure, or you will realize that your alcohol has escaped. (Or any alcohol that is after the checkvalve, before the nozzle).
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Why?
The water tank will not be heated, so the water-ethanol mixture will be at ambient. If anything, I will probably need to vent the tank to the outside.
The pump will pressurize the water/ethanol mixture to well above 134 kPA, which is the vapor pressure of 50% water/ethanol mixture at 90 C. I'm probably going to shoot for about 600 kPa, which should be at the upper limit of operation for a fuel injector.
The pressurized mixture then fill an accumulator which will even out the pulsations generated by both the pump and the E85 injector, then will travel approximately 3 meters from the rear of the Magnum to the engine compartment. There, the mixture will finally be heated to 90 C in the heat exchanger, then will travel a short distance to the E85 injector itself.
I can't seem to find a reliable check valve that completely prevents backflow, so I'm probably going to use two of these water injection solenoids I have lying around. One solenoid will be placed right after the pump, and the other solenoid will be placed right after the accumulator. All of this water injection equipment I have is from an aborted project to turbocharge the engine in my old Sebring Convertible, before it lost one of its conrod bearings and grenaded itself.