US 9,003,765 B1Granted

Engine having a rotary combustion chamber

OwnerBarry A. Muthinventor

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Abstract

A poppet valve engine incorporates a single rotary combustion chamber serving multiple cylinders to decrease emissions and increase thermodynamic efficiency. Virtually zero emissions are achievable by on-board fuel reforming to hydrogen. Limited heat range exposure of the rotary combustion chamber, low temperature combustion, and ceramic coatings reduce heat loss while three stage combustion, intake and fuel preheating, and fuel reforming reduce combustion process irreversibility. A supercharger increases the power density to allow engine displacement reduction. A z-crankshaft assembly coupled with a pre-combustion chamber allow knock-less and stable hydrogen combustion at virtually all load and speed conditions. Variable compression, possible in certain configurations of the z-crankshaft assembly, further increases thermal efficiency.

Claims19

Dependent claims

A four stroke poppet valve engine, the poppet valve engine comprising;

an engine block having a plurality of cylinders;
one or more pistons mounted in respective cylinders;
one or more crankshafts rotatably mounted to the engine block, each crankshaft being driven by one or more of the pistons;
a head mounted to said engine block;
intake passages in the head to direct air to the cylinders;
exhaust passages in the head to exhaust combustion gasses from the cylinders;
a rotary combustion chamber assembly located between the cylinders;
a rotary combustion chamber located within the rotary combustion chamber assembly;
a pre-combustion chamber located adjacent to the rotary combustion chamber;
a passage in the rotary combustion chamber assembly extending from the rotary combustion chamber to connect the rotary combustion chamber to each cylinder as the rotary combustion chamber assembly rotates;
and
an igniter for igniting fuel in the rotary combustion chamber.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/182,489Filed 14 Jul 2011
Granted: 14 Apr 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

F02B 19/1019
With fuel introduced partly into pre-combustion chamber, and partly into cylinder: with only one pre-combustion chamber
F02B 19/02
Engines characterised by precombustion chambers: the chamber being periodically isolated from its cylinder
F02B 19/16
Engines characterised by precombustion chambers: chamber shapes or constructions not specific to sub-groups F02B19/02 - F02B19/10
Y02T 10/12
Internal combustion engine [ICE] based vehicles: improving ICE efficiencies

Family

No related US applications are recorded in the indexed filing history.

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