Combustion engine intake valve
OwnerLaurian Petru Chirilainventor
Life of this patent
Estimating the term…
Abstract
An intake valve for a combustion engine is described. The intake valve has a head portion that is designed to improve the flow of air-fuel mixture around the head portion and into the combustion chamber. The head portion has a beveled or rounded edge at the top surface. The angle changes from the underside surface to the top surface are rounded to prevent separation of the air-fuel mixture from the surface of the intake valve. In addition, the underside surface of the head portion has a plurality of helical grooves that induce a circular flow to improve mixing of the air-fuel mixture in the chamber. The helical grooves also improve heat exchange between the air-fuel mixture and the intake valve.
Claims15
An intake valve for a combustion engine, comprising:
- a head portion having a top surface opposite of an underside surface, wherein the underside surface comprises a first angled surface and a second angled surface;
- a stem portion extending from the first angled surface of the underside surface;
- wherein the top surface is substantially planar and has a beveled edge;
- wherein the transition from the first angled surface to the second angled surface is rounded;
- and
- wherein the transition from the second angled surface to the beveled edge is rounded such that a coando effect is produced in an air-fuel mixture flowing from the second angled surface to the top surface to thereby reduce an air pocket size adjacent to the top surface.
A method of modifying a stock intake valve, wherein the stock intake valve comprises a head portion having an underside surface that includes a first angled surface, a second angled surface, and a perpendicular surface, wherein the perpendicular surface joins with a top surface at a right angle, the method comprising:
- rounding a first edge where the first angled surface and second angled surface meet;
- beveling or rounding the right angle to create a beveled edge;
- rounding a second edge where the second angled surface and the beveled edge meet;
- rounding a third edge where the beveled edge and top surface meet;
- and
- cutting a plurality of helical grooves in the first angled surface.
A method of manufacturing an intake valve comprising:
- providing a mold or die having a negative impression of the intake valve, wherein the negative impression comprises a head portion that comprises (i) an underside surface having a first angled surface and a second angled surface that meet at a rounded edge, and (ii) a top surface that joins the second angled surface at a beveled edge, the transition from the second angled surface to the beveled edge being rounded;
- using the mold or die to form a head portion of an intake valve.
Dependencies are inferred from the claim text.