High pressure

- in this mode the engine oil pressure is regulated by applying engine oil pressure (force) against the pump slide. The pump performs in this mode from idle to maximum engine speed much like a conventional ge-rotor style oil pump. The main improvement in this mode is that the pump only produces enough oil flow to meet the engine oil gallery pressure requirement as opposed to a ge-rotor pump that displaces a fixed volume and recirculates any surplus volume back to the pump inlet. The variable displacement pump in high mode is therefore more efficient because it produces only the flow necessary to achieve the engine oil pressure target and does not waist energy producing and recirculating excess volume.