Patent ID: 6953010
Filing Date: 2005-10-11
Classification: F01B,F02B,F04B,Y02T

Abstract:
1. An engine comprising: a fluid pumping assembly, having a first side and a second side in opposed relation to the first side, an inner fluid pumping chamber and an outer fluid pumping chamber, a first container for containing fluid under a relatively low pressure that is selectively in fluid communication with the inner fluid pumping chamber and the outer fluid pumping chamber, and a second container for containing fluid under a relatively high pressure that is selectively in fluid communication with the inner fluid pumping chamber and the outer fluid pumping chamber; a first combustion cylinder assembly located adjacent to the first side of the fluid pumping assembly and including a first cylinder liner that defines a first engine cylinder, which is centered about an axis of motion; a second combustion cylinder assembly located adjacent to the second side of the fluid pumping assembly and including a second cylinder liner that defines a second engine cylinder, which is centered about the axis of motion; an inner piston assembly having a first inner piston with a first inner piston head and a second inner piston with a second inner piston head, with the first inner piston mounted in the first engine cylinder such that the first inner piston head faces away from the first side and is telescopically slidable within the first engine cylinder along the axis of motion, and the second inner piston mounted in the second engine cylinder such that the second inner piston head faces away from the second side and is telescopically slidable within the second engine cylinder along the axis of motion, and with the inner piston assembly further including a push rod having a first end affixed to the first inner piston and a second end affixed to the second inner piston and a middle portion extending through the inner fluid pumping chamber in the fluid pumping assembly; and an outer piston assembly having a first outer piston with a first outer piston head and a second outer piston with a second outer piston head, and with the first outer piston mounted in the first engine cylinder such that the first outer piston head faces toward the first inner piston head and is telescopically slidable within the first engine cylinder, and the second outer piston mounted in the second engine cylinder such that the second outer piston head faces toward the second inner piston head and is telescopically slidable within the second engine cylinder, and with the outer piston assembly further including a first pull rod having a first end affixed to the first outer piston and a second end affixed to the second outer piston and a middle portion extending through the outer fluid pumping chamber in the fluid pumping assembly.