Methods and system for partial cylinder deactivation

US10393042B2 · kind B2 · utility

Assignee

• Ford Global Technologies, LLC · US

Inventors

• Juergen Karl Stief · Aachen, DE
• Werner Willems · Aachen, DE
• Guohui Chen · Zhuhai, CN
• Claudia Katharina Herudek · Aachen, DE
• Frank Wunderlich · Netphen, DE
• Christian Winge Vigild · Aldenhoven, DE

Key dates

• Filing date: Mar 27, 2018
• Grant date: Aug 27, 2019
• Expiry date: Mar 27, 2038

Classification

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

Abstract

Methods and systems are provided for reducing pumping losses during a partial deactivation. In one example, a method may include applying negative pressure to a deactivated cylinder group to remove gases trapped therein while an activated cylinder group continues to combust.