Embodiments of the present disclosure are directed toward a system including a trochoidal rotary device. The fuel delivery module supplies first and second amounts of diesel fuel to a cylinder of an engine during first and second combustion cycles for the cylinder, respectively. A metal separator for fuel cells manufactured by the method is also disclosed. According to a damascene process, a conductive runner, preferably of copper, is formed in a dielectric layer overlying the aluminum line and in electrical contact therewith.