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US 2009/0205331 A1Published application
Piston based double compounding engine
OwnerJ. Kendall Marshinventor
Life of this patent
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Abstract
A unique piston based, two cycle, internal combustion engine using turbocompounding to recover exhaust heat and a hot air cycle to recover jacket heat. Three engines operate together and share components to make a mechanically simple device. Air and exhaust are the only working fluids. All working cycles are open. There are no external heat exchangers or pumps. Power can be taken from the engine as mechanical shaft power or electrical with the preferred method being electrical.
Claims7
A piston based internal combustion engine comprising in combination paired cylinders such that
- a parallel relationship exists between center lines of said cylinder pair and with
- a single combustion chamber shared at the top of said cylinder pair when the cylinder axis is vertical and
- a piston slideably deployed in each cylinder of said cylinder pair and
- an insulating layer covering the combustion inside wall of the head of said combustion chamber and
- an insulating layer covering the combustion contacting area of each piston and
- a crankshaft deployed at the bottom of said vertically oriented cylinder pair, said crankshaft turning about an axis extending generally perpendicularly to a plane passing through the axis of at least one cylinder the piston of which is drivingly connected thereto, wherein the cylinder axis, if extended, would not intersect the crankshaft axis and said crankshaft and
- having two throws for each cylinder pair with each piston rod combination connected to its own crankshaft throw.
4 more elements
A method of combining multiple heat engine cycles within one basic engine
- providing an air pressurizer serving combustion air and a hot air cycle requirements
- arranging a turbine wheel extracting energy from the exhaust stream and from the hot air engine effluent
- positioning said combustion chamber such that it becomes a container for fuel combustion in addition to
- becoming a heat exchange surface for transfer of jacket heat to cooling air and
- freeing said combustion chamber from encumbrances and
- insulating said combustion chamber wall such that the surface of said insulation operates at high temperature and by such provides good heat flow and high engine efficiency.
3 more elements
Dependencies are inferred from the claim text.