Method and device for determining the throughput of a flowing medium

US7096723B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Dieter Tank · Kornwestheim, DE
• Hans Hecht · Stuttgart, DE
• Manfred Strohrmann · Karlsruhe, DE
• Wolfgang Mueller · Rutesheim, DE
• Axel-Werner Haag · Stuttgart, DE
• Uwe Konzelmann · Asperg, DE
• Wolfgang Kienzle · Hemmingen, DE
• Josef Kleinhans · Ludwigsburg, DE

Key dates

• Filing date: Dec 7, 2001
• Grant date: Aug 29, 2006
• Expiry date: Dec 7, 2021

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2400/08
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Methods and/or devices for detecting the flow rate of a flowing medium, in particular the flow rate of a flowing air mass, are described, in which the flowing medium is detected with two evaluation methods that operate according to different principles and the two measurement signals obtained are set in relation to each other in order to determine correction methods. Since the two measurement methods react differently to interference effects, the comparison of the two output signals permits conclusions to be drawn as to the type and the order of magnitude of the interference effects and a corrected measurement signal can be obtained, which is independent of the interference effects.