High efficiency eight stroke internal combustion engine

Details High efficiency eight stroke internal combustion engine High efficiency eight stroke internal combustion engine

2011-08-30

2011-08-30

Kamen, Noah (Department: 3783)

Internal-combustion engines

Water and hydrocarbon

C123S02500R, C060S712000

Reexamination Certificate

active

08006654

ABSTRACT:
A method and a system for operating an eight-stroke internal combustion engine having higher thermal efficiency than a four-stroke engine is disclosed. The strokes comprise intake (FIG.1), compression (FIG.2), combustion for a first power stroke (FIG.3), exhaust (FIG.4), vapor or water injection for a second power stroke (FIG.5), exhaust (FIG.6), vapor injection for a third power stroke (FIG.7), and exhaust (FIG.8). Heat from each exhaust is recovered and recycled to a subsequent stroke. Consequently, an engine with much higher thermal efficiency and thus lower fuel consumption is achieved.

REFERENCES:
patent: 4143518 (1979-03-01), Kellogg-Smith
patent: 4736715 (1988-04-01), Larsen
patent: WO 2009116741 (2009-09-01), None

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