Chris1 wrote:Land & Sea water brakes servo control water flow into the brake, versus a superflow that controls water flow out... so yes you can control on the inlet. Flow through the pump is the physical means of control for a water break, but as far as control scheme with decent software you can control off any combination of RPM, Load, & throttle position - might have to tune a PID loop if your chosen method isn't provided by the manufacturer. Gdlk!
Yeah and both methods have their merits.
The downside of the L&S method is that to reduce fill and thus allow the engine to reach higher RPM where it produces more power, you are reducing water flow and thus reducing the brake cooling.
The Superflow method of controlling the outlet makes more sense in that aspect, at minimum fill (load valve fully open) you've got maximum water flow and thus maximum cooling. The downside is the reduced range of control, hence the need to adjust the inlet valve for the RPMs you're testing at.
DTS did this the best, using servos for both inlet and outlet.