Patent · US Active

Method for operating an internal combustion engine with a turbocharger arrangement and control unit for an engine with a turbocharger arrangement

US9169796B2 · kind B2 · utility

1Cited by

4References

14Claims

0Family size

Assignee

Ford Global Technologies, LLC · US

Inventors

Simon Petrovic · Aachen, DE
Arno Bartsch · Clausthal-Zellerfeld, DE
Daniel Roettger · Eynatten, BE
Alain Marie Roger Chevalier · Henri-Chapelle, BE
Michael Marbaix · Haillot, BE

Key dates

Filing date	Jan 25, 2013
Grant date	Oct 27, 2015
Priority date	—
Expiry date	Oct 20, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Methods are provided for controlling an engine. One method may include adjusting airflow to a turbocharger arrangement with a turbine bypass valve bypassing a first turbine from a high-pressure turbocharger and a wastegate bypassing a second turbine from a low-pressure turbocharger; responsive to valve degradation, setting the turbine bypass valve fully open and the wastegate fully closed; and limiting engine torque based on a flow through a compressor of the low pressure turbocharger. In the event of valve degradation, limiting torque may reduce overspeed and surge of the low pressure turbocharger.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.