Internal-combustion engines – Precombustion and main combustion chambers in series – Piston carried precombustion chamber
Reexamination Certificate
2008-04-08
2008-04-08
Gimie, Mahmoud (Department: 3747)
Internal-combustion engines
Precombustion and main combustion chambers in series
Piston carried precombustion chamber
C123S263000, C123S661000
Reexamination Certificate
active
07353797
ABSTRACT:
A geometry for an IC combustion chamber is disclosed that increases the air-fuel mixing efficiency within the chamber. The piston head includes a squish surface portion for generating a squish jet, and a bowl portion that cooperatively with the cylinder head defines a combustion volume. A horizontal channel extends between the squish surface portion and the bowl portion, and is adapted to provide a high-momentum jet into the bowl portion. A transverse channel may also be provided that directs the squish flow toward the horizontal channel, thereby generating a toroidal vortex therein. A premix fuel injector may inject fuel near the upstream end of the horizontal channel. A converging nozzle portion near the distal end of the horizontal channel may increase the flow speed into the bowl portion. A chamber fuel injector is disposed near the downstream end of the horizontal channel.
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Christensen O'Connor Johnson & Kindness PLLC
Gimie Mahmoud
University of Washington
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