Internal-combustion engines – Two-cycle – Rear compression
Reexamination Certificate
2007-11-27
2007-11-27
Cronin, Stephen K. (Department: 3747)
Internal-combustion engines
Two-cycle
Rear compression
C123S0650WA
Reexamination Certificate
active
11308721
ABSTRACT:
A cylinder for a two-stroke engine has a cylinder wall defining a cylinder interior. A cylinder head closes of a combustion chamber in the cylinder interior. An exhaust is connected to the cylinder interior. At least one transfer passage having a transfer port opens into the cylinder interior. The at least one transfer passage is disposed in the cylinder wall for connecting a crank case of the two-stroke engine to the combustion chamber. The at least one transfer passage has at the level of the transfer port at least one flow deflecting rib having a radial spacing from the transfer port in a radial outward direction relative to a longitudinal cylinder axis.
REFERENCES:
patent: 4414928 (1983-11-01), Nakada
patent: 5040496 (1991-08-01), Plohberger et al.
patent: 7025021 (2006-04-01), Andersson et al.
patent: 7100550 (2006-09-01), Sheldon et al.
Denner Horst
Hoche Florian
Kunert Niels
Ali Hyder
Andreas Stihl AG & Co. KG
Cronin Stephen K.
Huckett Gudrun E.
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