rexresearch
Victor FISCHER
External Combustion Engine
Hydraulic external heat source engine -- US4747271
Inventor: FISCHER VICTOR
A hydraulic external heat source engine wherein energy is supplied to a working end space of the engine by direct application of pressurized and heated liquid working fluid to the piston within a cylinder. The power stroke utilizes expanded hot liquid as the primary pressure source. After fluid intake cut-off, some of the heated liquid spontaneously vaporizes, thereby continuing to drive the working piston. The exhaust liquid working fluid discharged from the cylinder is recycled to an external preheat exchanger for preheating cold compressed working fluid expelled from the pump end space of the engine. The majority of the vapor produced within the cylinder recondenses within the cylinder and is discharged as liquid. The small amount of vapor that is discharged from the cylinder is condensed in an expansion chamber in the preheat exchanger. The preheated fluid is heated to operating temperature and pressure in a primary heat exchanger before being recycled into the working end space. The cooled exhaust fluid in the preheat exchanger is passed through a cold reservoir exchanger for further cooling before introduction into the pump end space. The engine is large and is well suited to stationary applications using low-grade heat sources such as solar, geothermal, and waste heat to supply heat to primary heat exchanger.
Reciprocating external combustion engine -- US4393653
A reciprocating external combustion engine wherein energy is transferred to air acting as a working gas by injection into the air of liquid water at a high temperature and pressure. The liquid water is injected either directly into the cylinder or into a preliminary mixing chamber. The water acts as a heat-transfer medium for heating the air. Spontaneous vaporization of the liquid water on injection increases the pressure of the air which drives the piston before being exhausted. The exhaust water is recovered and recycled. The cylinder is scavenged and refilled with a fresh charge of air.
Rotary external combustion engine -- US4432203
A rotary external combustion engine wherein energy is transferred to air acting as a working gas by injection into the air of liquid water at a high temperature and pressure. The liquid water is injected either directly into the working space in the stator or into a preliminary mixing chamber. The water acts as a heat-transfer medium for heating the air. Spontaneous vaporization of the liquid water on injection increases the pressure of the air which drives the rotor before being exhausted. The exhaust water is recovered and recycled. The working space is scavenged and refilled with a fresh charge of air.
HEAT INJECTED HOT GAS ENGINE -- US4437308
A rotary external combustion engine wherein energy is supplied to a working space of the engine by direct injection into the stator of liquid water at a high temperature and pressure. The water acts as a heat-transfer medium. Some of the liquid water spontaneously vaporizes on injection, during the rotor. Liquid water is exhausted from the working space and recycled to an external heat exchanger for reheating prior to reinjection. The engine is capable of a thermal efficiency greater than that of the Rankine cycle.
HEAT INJECTED RECIPROCATING PISTON HOT GAS ENGINE -- US4426847
A reciprocating external combustion engine wherein energy is supplied to a working end space of the engine by direct injection into the cylinder of liquid water at a high temperature and pressure. The water acts as a heat-transfer medium. Some of the liquid water spontaneously vaporizes on injection, driving the piston. Liquid water is exhausted from the cylinder and recycled to an external heat exchanger for reheating prior to reinjection. The engine is capable of a thermal efficiency greater than that of the Rankine cycle.