Dynamic valve control in a skip fire controlled engine

US11261807B2 · kind B2 · utility

Assignee

• Tula eTechnology, Inc. · US

Inventors

• Jerry F. FUSCHETTO · Bay Point, US
• Matthew A. Younkins · San Jose, US
• Ihab S. Soliman · Warren, US
• Mark A. Wilcutts · Berkeley, US
• Steven E. Carlson · Oakland, US
• Louis J. Serrano · Los Gatos, US

Key dates

• Filing date: Feb 24, 2021
• Grant date: Mar 1, 2022
• Expiry date: Feb 24, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Various methods and arrangements for improving fuel economy and noise, vibration, and harshness (NVH) in a skip fire controlled engine are described. An engine controller dynamically selects a gas spring type for a skipped firing opportunity. Determination of the skip/fire pattern and gas spring type may be made on a firing opportunity by firing opportunity basis.