force of the return spring
The hi-pressure opens that, it shuts when the pressure is "used up"
The tech problem (not mine) is how to get a solenoid to shift the little piston to expose the side hole in an unbelievably short time - about a ten-thousandth of a second. These solenoids are what have allowed Reactive Suspension to work.
I have found a company that knows the voltage, current and inductance used by Delphi (Delphi won't talk) but this company is "too busy" to tell me. I plan to keep at them - the only lead I've had. My other pieces of info might be no use.
Certainly, I'm wrong somewhere with my calculations because the three bits of info can be checked against each other and it suggests I need a VERY high voltage. Still plugging on.
