High flow reed valve assembly for a two-cycle engine
AssigneePolaris Industries Inc.
InventorsLawrence J. Hosaluk, Dan Erickson, Scott E. McKinster
Life of this patent
Estimating the term…
Abstract
A reed valve assembly in certain embodiments of the present teachings may include one or more of the following features: (a) a W shaped reed cage assembly having at least two reed cages, each reed cage having outer air ports and inner air ports wherein the inner air ports face one another, (b) a plurality of reeds that cover the inner and the outer air ports, the reeds secured to the reed cage assembly, and (c) a center splitter secured between the inner air ports of the reed cages, the center splitter having a shape designed to match the deflected shape of the inner reeds when the inner reeds open.
Claims56
A reed valve assembly comprising:
- a reed cage assembly having at least two reed cages, the reed cages having inner and outer air ports;
- a plurality of reeds that cover the inner and the outer air ports, the reeds secured to the reed cages;
- and
- a center splitter secured between the inner air ports of the reed cages, the center splitter having at least one channel which traverses the splitter parallel to airflow.
A reed valve assembly comprising:
- a W shaped reed cage assembly having at least two reed cages, each reed cage having outer air ports and inner air ports wherein the inner air ports face one another;
- a plurality of reeds that cover the inner and the outer air ports, the reeds secured to the reed cage assembly;
- and
- a center splitter secured between the inner air ports of the reed cages, the center splitter having a shape designed to match the deflected shape of the inner reeds, the center splitter having at least one channel.
The reed valve assembly of 16, wherein the splitter is designed from an algorithm to match the shape of the defected inner reed to create a greater surface area for the inner reeds to contact the splitter.
A two-stroke engine comprising:
- a crankcase,
- a cylinder operatively coupled to the crankcase,
- a piston located in the cylinder,
- a transfer port coupled to the cylinder;
- a reed cage assembly operably connected to the crankcase, the assembly having at least two reed cages, the reed cages having inner and outer air ports;
- a plurality of reeds that cover the inner and the outer air ports, the reeds secured to the reed cages;
- and
- a center splitter secured between the inner air ports of the reed cages, the center splitter having at least one channel traversing parallel to reed cage airflow.
A reed valve assembly comprising:
- a W shaped reed cage assembly having at least two reed cages, each reed cage having outer air ports and inner air ports wherein the inner air ports face one another;
- means secured to the reed cage for covering the inner and the outer air ports;
- and
- at least one channel for funneling air trapped between the reeds over the inner air ports and a center splitter, the at least one channel running parallel to reed cage airflow.
The reed valve assembly of 35, wherein the splitter is designed from an algorithm to match the shape of the defected inner reed to create a greater surface area for the inner reeds to contact the splitter.
A method for manufacturing a reed valve assembly comprising the steps of:
- casting a reed cage assembly with at least two reed cages, the reed cages having inner and outer air ports;
- connecting a reed to the reed cage, the reed lying over the inner port;
- and
- securing a center splitter between the inner air ports of the reed cages, the splitter having a channel extending parallel to reed cage airflow.
Dependencies are inferred from the claim text.