Displacement Power Controllers and Applications

A displacement power controller for variable displacement fluid or gas power control, the displacement power controller comprising:

• a. a housing defining a power exchange cavity;
• b. at least four fluid exchange ports in fluid communication with the power exchange cavity;
• c. a power transfer element positioned within the power exchange cavity, the power transfer element comprising:
• i. a cylinder block comprising a first plurality of pistons whose collective movements in a first Plurality of cylinders in the cylinder block define a first fluid displacement within the power exchange cavity;
• ii. the cylinder block comprising a second plurality of pistons whose collective movements in a second plurality of cylinders in the cylinder block define a second fluid displacement within the power exchange cavity;
• iii. a mechanism for adjusting relative positions of the first and second pluralities of pistons inversely within the power exchange cavity to thereby adjust the first and second fluid displacements whereby an increase of the fluid displacement of the first Plurality of pistons corresponds to an inverse decrease of the fluid displacement of the second Plurality of pistons and vice versa;
• d. wherein the power transfer element forms at least first and second fluid paths, each fluid path connecting two of the at least four fluid exchange ports and wherein the first fluid path comprises the first fluid displacement and wherein the second fluid path comprises the second fluid displacement;
• e. wherein the fluid volumes of the fluid paths are adjustably inversely related to each other;
• and
• f. wherein the displacement power controller is operable to receive a fluid source flow and pressure from a fluid source and to modulate the fluid source flow and pressure into an adapted fluid flow and pressure to be provided as an input fluid flow for an actuator.