Variable bandwidth striated charge for use in a rotary vane pumping machine

A rotary vane combustion engine comprising:

• a rotor having a plurality of vanes spaced from each other in a circumferential direction of the rotor;
• a stator enclosing the rotor to form a plurality of vane cells between the plurality of vanes;
• said rotor and said stator being rotatable relative to each other about an axis of rotation, and the width of each of said vane cells lying in the direction of said axis of rotation;
• one or more intake ports for providing an intake charge to the vane cells;
• one or more exhaust ports for removing exhaust gas from the vane cells;
• and
• a variable bandwidth fuel-air source connecting a source of a fuel and air mixture to at least one of the intake ports, said variable bandwidth fuel-air source comprising an intake line having an effective width, in the direction of said axis of rotation, that can be varied such that the variable bandwidth fuel-air source can selectively provide to the plurality of vane cells any one of discrete bands of a fuel and air mixture of respective widths that differ in the direction of said axis of rotation.