Low pressure fuel and air charge forming device for a combustion engine

US11073122B2 · kind B2 · utility

Assignee

• WALBRO LLC · US

Inventors

• Gary J. Burns · Knoxville, US
• Andreas D. Dixon · Cass City, US
• Eric G. Zbytowski · Alpena, US
• Albert L. Sayers · Caro, US
• Justin T. Dolane · Cass City, US
• David L. Speirs · Cass City, US
• William E. Galka · Caro, US
• Duried F. Rabban · Henderson, US
• Bradley J. Roche · Cass City, US

Key dates

• Filing date: Apr 21, 2017
• Grant date: Jul 27, 2021
• Expiry date: Apr 21, 2037

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M63/0056
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

In at least some implementations, a throttle body assembly for a combustion engine includes a throttle body having a pressure chamber in which a supply of fuel is received and a throttle bore with an inlet through which air is received, a throttle valve carried by the throttle body with a valve head movable relative to the throttle bore to control fluid flow through the throttle bore, and a metering valve carried by the throttle body. The metering valve may have a valve element that is movable between an open position wherein fuel may flow from the pressure chamber into the throttle bore and a closed position where fuel is prevented or substantially prevented from flowing into the throttle bore through the metering valve.