Development of a switching roller finger follower for cylinder deactivation in internal combustion engines

US11788439B2 · kind B2 · utility

Assignee

• Eaton Intelligent Power Limited · IE

Inventors

• Andrei Dan Radulescu · Marshall, US
• Austin Robert Zurface · Dowling, US
• James R. Sheren · Grand Ledge, US
• Anthony L. Spoor · Union City, US
• Luigi Lia · Torino, IT
• Philip Michael Kline · Tekonsha, US

Key dates

• Filing date: Dec 21, 2020
• Grant date: Oct 17, 2023
• Expiry date: Dec 21, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/2107
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A rocker arm includes an outer arm having a first side and a second side, an inner arm positioned between the first side and the second side of the outer arm, a pivot axle pivotally coupling the inner arm to the outer arm at a first end of the inner arm and a first end of the outer arm, and a latch pin having a first position and a second position. The latch pin in the first position pivotally fixes the inner arm to the outer arm at a second end of each of the inner arm and a second end of the outer arm, and in the second position allows the inner arm and the outer arm to pivot independently. Two lost motion springs are respectively secured to mounts provided on the outer arm.