Rotary valve in an internal combustion engine

Details Rotary valve in an internal combustion engine Rotary valve in an internal combustion engine

2008-04-07

2010-11-30

Kamen, Noah (Department: 3741)

Internal-combustion engines

Four-cycle

Rotating valve

C123S059400, C123S0800BB, C123S190400, C123S568110

Reexamination Certificate

active

07841308

ABSTRACT:
A rotary valve engine using a single rotary valve serving multiple cylinders significantly increases both volumetric and thermodynamic efficiencies. A novel stratified three stage low temperature combustion system reduces both heat transfer loss and combustion process irreversibility. Using large intake and exhaust valves and passages to reduce throttling losses, the rotary valve also contains a combustion valve and passage connected to a central combustion chamber. Combustion is initiated for all cylinders by a fuel injector in this central chamber which then sequentially ignites a second combustion chamber charge located in each cylinder head. A passage in the rotary valve shaft transfers gas from the combustion cycle to the compression cycle varying the compression ratio of the engine, producing EGR, and transferring radical species for combustion to the next cycle. A compounding element on the rotary valve extracts additional thermal energy derived from reduced heat transfer loss and increased energy.

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patent: 5816203 (1998-10-01), Muth
patent: 6155215 (2000-12-01), Muth
patent: 6513475 (2003-02-01), Muth

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