Abstract: A fluid pumping system for an engine includes a pump; a summing differential connected to the pump; a gearbox connected to the summing differential, wherein the gearbox causes the pump to rotate to provide a fluid flow in the engine via the summing differential; and a motor connected to the summing differential, wherein the motor adjusts a rotational speed of the pump via the summing differential

Abstract: A method is disclosed for marketing energy-use optimization and retrofit services and devices. The first step in the present method is to measure empirical (base-line) performance including energy use and efficiency. A best-fit curve is generated and defined by at least a third-degree polynomial. Second, the theoretical performance of the system is calculated based upon the theoretical implementation and installation of proposed strategies and devices (the “Proposa”). Third, the projected savings are presented to the client and a fee structure is established based, at least in part, on energy savings resulting from implementation of the Proposal. Fourth, the actual performance of the completed implementation of the Proposal is measured. Fifth, post-implementation measured energy use is compared with pre-implementation energy use at specific pre-determined “part load” levels.