Flow vs Pressure

[parmas]

Originally Posted by Richard L

The maximum flow at 160psi is approximately 1600cc/min. This is the aquatec 5800-series pump.

All pumps on the market are quoting "dead-headed" pressure. Totally meaningless. As soon as the spray starts, the pressure will drop. Higher "dead head" pressure setting will drop much faster than a lower "dead-head" pressure setting.

Let's take 1600cc/min as Maximum flow (0.9mm(M5.3) nozzle) for a 4cylinder engine :

A - 1 Pump = 1600cc @ 160psi = (400cc x 4 nozzles)

Good for mixing 75% pump fuel and 25% Water/Methanol


B - 2 Parrallel Pumps = 3200cc @ 160psi = (800cc x 4 nozzles)

Good for mixing 50% pump fuel and 50% Water/Methanol


C - 2 Series Pumps = 1600cc @ 320psi = (400cc x 4 nozzles)

BEST for mixing 75% pump fuel and 25% Water/Methanol. SUPER FINE MIST


D - 3 Parallel Pumps = 4800cc @ 160psi = (1200cc x 4 nozzles)

Good for mixing 25% pump fuel and 75% Water/Methanol


E - 2 Parrallel + 2 Series Pumps = 3200cc @ 320psi = (800cc x 4 nozzles)

BEST for mixing 50% pump fuel and 50% Water/Methanol. SUPER FINE MIST


F - 4 Parallel Pumps = 6400cc @ 160psi = (1600cc x 4 nozzles)

BEST for operating engine @ 100% Water/Methanol injection


Calculating Fuel flow for 400Bhp @ 1.2 BSFC 100% Methanol = 1260cc/min x 4nozzles. Using 25/75 Water/Meth, one should compensate for water flow and Setup F configuration of 4 Parrallel Pumps would be needed.


Calculating Horsepower loss per WATT taking account pump is operating at 14Volts x 10Amps

1 Pump = 140Watt = 0.19Hp loss
2 Pump = 280Watt = 0.38Hp loss
3 Pump = 420Watt = 0.57Hp loss
4 Pump = 560Watt = 0.75Hp loss

Maximum of 1Hp loss @ 100% Meth fuel injection. Is it worth it ?

What is your point of view Richard ?