Internal combustion engine

Details Internal combustion engine Internal combustion engine

2011-04-12

2011-04-12

Kamen, Noah (Department: 3783)

Internal-combustion engines

Multiple cylinder

Simultaneous compression, distinct pistons, restricted...

C123S08100R, C123S188500

Reexamination Certificate

active

07921817

ABSTRACT:
An internal combustion engine is provided. Facing pistons eliminate a cylinder head, thereby reducing heat losses through a cylinder head. Facing pistons also halve the stroke that would be required for one piston to provide the same compression ratio, and the engine can thus be run at higher revolutions per minute and produce more power. An internal sleeve valve is provided for space and other considerations. A combustion chamber size-varying mechanism allows for adjustment of the minimum size of an internal volume to increase efficiency at partial-power operation. Variable intake valve operation is used to control engine power.

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