Engine induction valve with reduced backflow

US6561143B2 · kind B2 · utility

Inventor

• Barry Lyn Holtzman · Eagle River, US

Key dates

• Filing date: Sep 6, 2001
• Grant date: May 13, 2003
• Expiry date: Dec 11, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/7935
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

This invention is an effective engine induction valve which provides a decrease in engine blowback while maintaining engine power. This valve uses a moveable member made from a heat-setting material, this member being bent into an elliptical curve when the member is in the closed position. This elliptical curve has an included angle at the edge of the member which opens toward the engine, this orientation being beneficial in reducing blowback. Using springs to limit the force attaching the moveable member to the valve body prevents unwanted buckling of this member when exposed to elevated temperature and fuel. An embodiment is described which provides a valve with a uniform frequency response at various operating conditions, especially different temperatures.