Dynamic valve control in a skip fire controlled engine

US10619584B2 · 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

Key dates

• Filing date: May 17, 2018
• Grant date: Apr 14, 2020
• Expiry date: Oct 16, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• 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.