Abstract: A variable flow reducing valve and distribution system is disclosed for compressed air injection engines operating on mono or dual energy with dual or triple supply mode and comprising a high pressure compressed air tank and a buffer capacity. The system can control the stroke of an engine piston and stop the piston at the dead centre. Moreover, the air supply in the buffer capacity and to the cylinders is controlled by pilot valves. A cam for the pilot valves is positioned directly on the flanges of a crankshaft and drives the rocker arm rods to pivot rocker arms around corresponding mobile shafts that can move between two ends of the rocker arms, thereby controlling lifting of the pilot valves according to the movement of the rocker arm rods.

Abstract: Operation of a system for injecting a predetermined amount of a secondary fluid into a primary fluid stream. The system uses a liquid additive injection pump driven by a fluid powered motor that is driven by the primary fluid stream and can be selectively suspended by an on/off switch mechanism. The fluid powered motor includes a housing enclosing a differential pressure piston assembly having a piston movable within housing between upstroke and down stroke positions; a valve mechanism establishing a differential pressure within the housing to produce movement of the piston; an over-center mechanism coupled to the valve mechanism to toggle the valve mechanism between open and closed positions; and an actuating shall coupled to the over-center mechanism.

Abstract: A high efficiency, low cost fluid pressure engine. This engine converts reciprocating piston motion to rotary output in a novel manner. The engine comprises at least two parallel pistons adapted to reciprocate in cylinders within an engine block closed by upper and lower heads. Each piston is rigidly secured to a piston rod located along the cylinder centerline and extending through substantially fluid tight packing in the lower head. The lower end of each piston rod is flexibly connected to a first connecting means which also includes an opening surrounding a first crank pin. A pair of reciprocating valve means, located within said engine block, are adapted to selectively introduce and exhaust the engine drive fluid into and out of the cylinder above and below the pistons. Valve push rods secured to said valve means are connected to a second connecting means which also has an opening surrounding a second crank pin.