Drive system with expander shut off upon detection of a leak

US10519878B2 · kind B2 · utility

Assignee

• Mahle International GmbH · DE

Inventors

• Michael Bucher · Berlin, DE
• Florian Fuchs · Regensburg, DE
• Roland Lochmann · Erbach, DE
• Hannes Marlok · Leonberg, DE
• Peter Wieske · Ditzingen, DE

Key dates

• Filing date: Nov 8, 2017
• Grant date: Dec 31, 2019
• Expiry date: Feb 23, 2038

Classification

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

Abstract

A drive system may include an internal combustion engine and an expander operated via a working medium. A force transmission device may be disposed between a crankcase and the expander. A first seal may be disposed between the expander and the force transmission device and/or a second seal may be disposed between the force transmission device and the crankcase. A crankcase ventilation line may lead from the crankcase into an intake pipe of the internal combustion engine. An air mass sensor may be disposed in the intake pipe. An engine control unit may be in communication with the air mass sensor, the expander, and the internal combustion engine and may be configured to detect a power of the internal combustion engine and an air mass flow of the air mass sensor and may switch off the expander if a power suddenly rises with the air mass flow remaining constant.