Internal combustion engine with deactivatable cylinder, and method for operating an internal combustion engine of said type

US9624823B2 · kind B2 · utility

Assignee

• Ford Global Technologies, LLC · US

Inventors

• Helmut Matthias Kindl · Aachen, DE
• Werner Willems · Aachen, DE
• Vanco Smiljanovski · Bedburg, DE
• Norbert Andreas Schorn · Aachen, DE
• Franz Arnd Sommerhoff · Aachen, DE
• Andreas Kuske · Geulle, NL
• Joerg Kemmerling · Monschau, DE
• Franz J. Brinkmann · Hürth, DE
• Rob Stalman · Heinsberg, DE

Key dates

• Filing date: Apr 29, 2014
• Grant date: Apr 18, 2017
• Expiry date: Sep 9, 2034

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 and system is provided for a turbocharged multi-cylinder internal combustion engine comprising a two-channel turbine and at least two groups of cylinders, wherein one group of cylinders is switchable responsive to an engine load over a threshold. Exhaust lines of each group of cylinders are arranged in a targeted manner to couple with the turbine such that the switchable group is attached to one channel and the active group is attached to the other channel to reduce the difference in distances that pressure pulses travel, wherein a shut-off element is provided in the channel attached to the switchable group and may be moved to block exhaust flow through the channel when the cylinders are deactivated, thus improving the partial deactivation and turbocharging characteristics of the engine.