Compound internal combustion and external combustion engine

Patent · Tue Jul 15 04:00:00 EDT 1986

OSTI ID:5393953

Marttila, A R

A compound engine is described comprising at least one internal combustion cylinder having an inlet and an outlet and one external combustion cylinder having an inlet and an outlet, each of the combustion cylinders having a reciprocable piston therein coupled to a common utilization output shaft, heat exchanger means associated with the external combustion cylinder for transferring heat to a space in the cylinder above the piston in the external combustion cylinder, means for transferring hot exhaust gases exhausted from the internal combustion cylinder during its exhaust cycle to the heat exchanger means, means for introducing a heat expandable gas through the inlet of the external combustion cylinder into the space above the piston in the external combustion cylinder whereby heat transferred by the heat exchanger means to the space during the passage of the exhaust gases through the heat exchanger means causes cooling of the exhaust gases and expansion of the heat expandable gas in the space imparting motive power to the piston in the external combustion cylinder and to the common utilization output shaft in addition to motive power applied to the shaft by the piston in the internal combustion cylinder during conventional expansion cycles in the internal combustion cylinder.

• Assignee: NOV; EDB-86-144126; NOV-85-017775
• Patent Number(s): US 4599863
• OSTI ID: 5393953
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
COMBUSTION CHAMBERS
COMPRESSION
COOLING
CYLINDERS
DESIGN
ENERGY TRANSFER
ENGINES
EXHAUST GASES
EXHAUST SYSTEMS
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
HEAT EXCHANGERS
HEAT TRANSFER
HYBRID SYSTEMS
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
MECHANICAL STRUCTURES
PISTONS
SHAFTS
WASTES