초록 ▼

A double-acting tandem free-piston engine comprising a housing including a cylinder having combustion chambers at opposite ends and one in its center with double-acting pistons displaceable between one end and the center chamber and between the other end and the center chamber. Each piston includes

A double-acting tandem free-piston engine comprising a housing including a cylinder having combustion chambers at opposite ends and one in its center with double-acting pistons displaceable between one end and the center chamber and between the other end and the center chamber. Each piston includes opposite piston heads with connecting rods between them together with balancing means to provide symmetrical piston movement. Each combustion chamber has a inlet port and valve and an exhaust valve, the valves timed to open and close to produce a pressure volume relationship therein wherein the pressure drops below atmospheric during at least a portion of the piston\s displacement. The engine combined with a linear alternator in a hybrid vehicle powers electric wheel driving motors and stores power in its storage battery.

대표청구항 ▼

A double-acting tandem free-piston engine comprising: a housing including a cylinder having first and second combustion chambers at opposite ends thereof and a third combustion chamber between said ends, a first double-acting piston displaceable between said first and third combustion chambers, and

A double-acting tandem free-piston engine comprising: a housing including a cylinder having first and second combustion chambers at opposite ends thereof and a third combustion chamber between said ends, a first double-acting piston displaceable between said first and third combustion chambers, and a second similar piston displaceable between said second and third combustion chambers, each double acting piston including opposite piston heads and a connecting rod between said heads, balancing means coupling said two pistons to move symmetrically, each of said combustion chambers including an inlet valve and an exhaust valve, said valves being timed to open and close to produce a pressure-volume relationship in each of said combustion chambers wherein said pressure drops below atmospheric during at least a portion of the piston displacement.