Systems and methods for a supercharged internal combustion engine with exhaust gas recirculation

US10539070B2 · kind B2 · utility

Assignee

• Ford Global Technologies, LLC · US

Inventors

• Joerg Kemmerling · Monschau, DE
• Vanco Smiljanovski · Bedburg, DE
• Helmut Matthias Kindl · Aachen, DE
• Hanno Friederichs · Aachen, DE
• Andreas Kuske · Geulle, NL
• Franz Arnd Sommerhoff · Aachen, DE

Key dates

• Filing date: Jun 13, 2018
• Grant date: Jan 21, 2020
• Expiry date: Jul 18, 2038

Classification

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

Abstract

Methods and systems are provided for a supercharged internal combustion engine having staged boosting devices. In one example, a system may include an engine coupled to an intake system for receiving charge air and an exhaust system for discharging exhaust gases, an electrically driven compressor arranged in the intake system upstream of a turbocharger compressor, a bypass line, including a bypass valve, coupled across the electrically driven compressor, a throttle arranged at an inlet of the electrically driven compressor, and an exhaust gas recirculation system that couples the exhaust system downstream of the exhaust turbine to the intake system upstream of the electrically driven compressor via a first recirculation branch and between the electrically driven compressor and the turbocharger compressor via a second recirculation branch. In this way, the electrically driven compressor may be operated to reduce condensate formation at an inlet of the turbocharger compressor.