Multi-cylinder internal combustion engine and method for operating a multi-cylinder internal combustion engine

US8944026B2 · kind B2 · utility

Assignee

• Ford Global Technologies, LLC · US

Inventors

• Michael Tobergte · Cologne, DE
• Carsten Weber · Aalen, DE
• Kay Hohenboeken · Cologne, DE
• Helmut Hans Ruhland · Eschweiler, DE
• Bert Pingen · Rheinbach, DE

Key dates

• Filing date: Sep 1, 2011
• Grant date: Feb 3, 2015
• Expiry date: Dec 4, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for partial cylinder cutoff is provided. The method comprises operating a multi-cylinder internal combustion engine with applied ignition, in which an odd number n of cylinders is arranged in line, and during partial-load operation when engine load is below threshold, enabling a partial cutoff of the cylinders, the partial cutoff comprising operating each cylinder only intermittently such that each cylinder is fired and cut off in turn at an interval of (2*720° CA)/n.