Six stroke internal combustion engine and method of operation

Details Six stroke internal combustion engine and method of operation Six stroke internal combustion engine and method of operation

2008-10-20

2010-06-01

Kamen, Noah (Department: 3741)

Internal-combustion engines

Six-cycle

Reexamination Certificate

active

07726268

ABSTRACT:
An internal combustion engine includes an arrangement of cylinders each having a reciprocating piston operatively linked to a crankshaft. The cycle for each cylinder includes an intake stroke, a compression stroke, a power stroke, an exhaust stroke, and two free strokes during which the exhaust valve or a separate clean air valve is left open. The power stroke of each cylinder fires simultaneously with the free stroke of another cylinder. The engine and method of operation provides a six stroke cycle for each power stroke to yield three revolutions of the crankshaft per cycle, thereby increasing fuel efficiency.

REFERENCES:
patent: 1091703 (1914-03-01), Pratt
patent: 1913399 (1933-06-01), Krug
patent: 4367700 (1983-01-01), Pace
patent: 2547625 (1984-12-01), None
patent: 2366326 (2002-03-01), None

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