If the installation warrants, used lubricating oil can be blended and used in the engine in a continuous manner. The normal method uses a centrifuge module similar to Figure 9. The following information describes this system.
Centrifuge No. 1
Engine crankcase oil is continuously centrifuged except when the clean waste oil tank is low, at which time the dirty waste oil is centrifuged and directed to the clean waste oil tank.
Centrifuge No. 2
Distillate fuel/oil mixture daytank is continually centrifuged.
Metering Pump
Adds up to 5% clean waste oil to the distillate fuel (from the main supply tank) when the daytank low level switch calls for more fuel.
Static Mixer
Runs when the metering pump is on to insure a proper homogeneous mixture of the fuel and clean waste oil.
The centrifuge module is electronically controlled and includes the components within the dotted line as shown in Figure 10. Size the system for appropriate fuel delivery.
