Patent · US Expired

Air flow rate measuring device in an internal combustion engine

US4407156A · kind A · utility

0Cited by

3References

4Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Michael Horbelt · Schwieberdingen, DE
Herbert Arnold · Eberdingen, DE
Lothar Winkelmann · Ludwigsburg, DE

Key dates

Filing date	Jun 3, 1981
Grant date	Oct 4, 1983
Priority date	—
Expiry date	Jun 3, 2001

Classification

Technology area (CPC G)Physics
CPC primaryG01F1/72
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An air flow rate measuring device is proposed for an internal combustion engine. The air flow rate measuring device includes a baffle valve disposed in the air intake tube and a signal generating circuit coupled therewith. A damping member is associated with the signal generating circuit. This damping member serves to damp the so-called over-swings in the output signal caused by the sluggishness of the baffle valve and thereby avoid incorrect fuel metering. Two embodiments of damping members are disclosed, both comprising resistor-capacitor combinations together with a diode, in which the stored capacitor charge assumes the function of damping the output signal of the signal generating circuit.

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