What Engine for 500BHP

[turbonutter]

stevieturbo said:

turbonutter said:

The solenoid was not restricting the flow more than a few CC, but the range of possible flow was less. with the pump at full speed and controlling only the solenoid i measured 390 to 450cc/min and with the solenoid full open and controlling the pump gave 280 to 450cc range.
the 280cc is with 30% duty on the pump which netted 65psi before the nozzle. Minimum for good spray 60psi as per the makers, but it tested ok down to 50psi.

nozzle pressure minus boost pressure...

Running the pump at full duty and controlling flow via the valve would be the best option. Or at those flow levels, you could rig up a fixing with a normal fuel injector which would give good spray and a very wide range of control

But for the standalone stuff, PWM'ing the pump with a simple controller is just easy, even if it isnt ideal

I start the WI at 0.4 bar, so 5.5 psi, so 59.5 psi differential & the WI pressure rises faster than the boost, so the differential improves.
I agree using the valve to control the flow is best, but I couldnt make it work & yes PWM'ing the pump is easy to get the control.

[turbonutter]

Track day at Blyton this Sunday (16th July) hopefully it goes better than the one I did a couple of years ago when the head gasket blew!