Patent · US Expired

Air mass flowmeter with controlled flow separation position

US6945105B2 · kind B2 · utility

3Cited by

3References

15Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Stefan Pesahl · Kelheim, DE
Frank Steuber · Ditzingen, DE
Andreas Wildgen · Nittendorf, DE

Key dates

Filing date	Aug 16, 2002
Grant date	Sep 20, 2005
Priority date	—
Expiry date	Aug 16, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG01F5/00
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An air mass flowmeter, suitable for connection to an air-intake manifold of an internal combustion engine, measures an air mass taken in by the engine. The flowmeter has an air passage consisting of a first channel and a second channel joined by a turning area. An air mass sensor is located in the second channel downstream of the turning area, on an inner wall of the second channel. A flow element is located in the turning area, projects from an inner wall of one of the channel sections towards a curved wall of the turning area to define a point of separation of a stream of air from an inner channel wall upstream of the air mass sensor.

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