Patent ID: 8651833

Claim:
A combined gas and liquid pump for an internal combustion engine, the pump including a casing having a cavity containing a rotor and a vane slidably mounted to the rotor, wherein the cavity is provided with first inlet connectable to a gas source, a second inlet connectable to a liquid source separate from the gas source, and an outlet, the rotor and vane being movable to draw gas and liquid into the cavity through the first and second inlets, respectively, and to move said gas and liquid out of the cavity through the outlet, wherein the inlets are arranged through the casing so as to be on opposing sides of the vane at all rotational positions of the vane such that fluid is drawn first through the first inlet and then through the second inlet before being discharged through the outlet, wherein the inlets are arranged such that fluid is drawn in sequence therethrough, and the first inlet is closed before fluid is drawn through the second inlet, and wherein the second inlet has a larger diameter than the first inlet.