Engine with improved EGR system

US8925317B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Rodrigo Rodriguez Erdmenger · Munich, DE
• Cathal Clancy · Munich, DE
• Daniel Edward Loringer · Erie, US
• Jassin Marcel Fritz · Munich, DE
• Neil Xavier Blythe · North East, US
• Lukas Johnson · Erie, US
• Sebastian Walter Freund · Seßlach, DE
• Pierre Sebastien Huck · Munich, DE
• Jonathan Nagurney · Erie, US
• Yu Du · Shanghai, CN
• Matthias Lang · Berching, DE
• Rudolf Konrad Selmeier · Unterschleißheim, DE
• Elisa Jubany Arribas · Munich, DE

Key dates

• Filing date: Jul 16, 2012
• Grant date: Jan 6, 2015
• Expiry date: Jan 24, 2033

Classification

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

Abstract

An exemplary turbocharger system for an internal combustion engine is provided. The turbocharger system includes a first turbine and a second turbine. The first turbine is in fluid communication with the internal combustion engine. The first turbine receives a first portion exhaust gas discharged from the internal combustion engine and provides a first turbine exhaust gas. The second turbine is in fluid communication with the first turbine via an inter-stage channel. The inter-stage channel transports the first turbine exhaust gas from the first turbine to the second turbine. The inter-stage channel is in thermal connection with an exhaust gas recirculation channel defined between an inlet and an outlet of the internal combustion engine. The first turbine exhaust gas flowing through the inter-stage channel is capable of being heated by a second portion exhaust gas discharged from the internal combustion engine and flowing through the exhaust gas recirculation channel.