Abstract: A system for managing moisture content of hydrogen and oxygen gas produced by a fuel cell for a fuel supplement for an internal combustion engine, with a tank holding process water and respective separate hydrogen and oxygen header spaces for receiving hydrogen and oxygen gas having moisture content wherein some moisture content forms droplets and falls into the process water yielding dried hydrogen and oxygen gases for communicating through supply lines to the engine as a fuel supplement during operation. A method is disclosed for managing moisture content of hydrogen and oxygen gas produced by a fuel cell for delivery as a fuel supplement to an engine.

Abstract: An apparatus that regulates a flow of hydrogen and oxygen generated by fuel cells as supplemental fuel for an internal combustion engine, in which a microprocessor controller receives engine operating parameters, determines a fuel demand for the engine responsive to the operating parameters, and regulates the supply of power to the fuel cells for generating the supplemental fuel. A supply body holds process water supplied to the fuel cells. The generated hydrogen and oxygen communicate to an intake manifold of the engine. A method of regulating the disbursement of hydrogen and oxygen for supplemental fuel for an engine is disclosed.