Two-stage turbocharged internal combustion engine

US11448118B2 · kind B2 · utility

Assignee

• Caterpillar Motoren GmbH & Co. KG · DE

Inventors

• Michael Sturm · Bad Mergentheim, DE
• Markus Krueger · Weede, DE
• Torben Gravert · Gettorf, DE
• Jan Borchardt · Kiel, DE
• Udo Wachtel · Schwedeneck, DE
• Helge Seidel · Kiel, DE
• Volker Abraham · Kiel, DE
• Ole Ehlert · Trettendorf, DE

Key dates

• Filing date: Aug 30, 2019
• Grant date: Sep 20, 2022
• Expiry date: Aug 30, 2039

Classification

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

Abstract

A two-stage turbocharged internal combustion engine comprises a low-pressure stage turbocharger mounted at a first end side of an engine block and a high-pressure stage turbocharger mounted at the same first end side of the engine block. The respective turbochargers are mounted via a mounting structure, Which also accommodates the charge air coolers associated with the turbochargers. In order to obtain a compact arrangement and reduce a length of pipe connections between the different components, the different charge air coolers are mounted to mounting structure such that they overlap in a plan view of the internal combustion engine. Further, flow directions of charge air in the different charge air coolers are opposite to each other.