Pressure pickup for measuring the pressure in the intake manifold of an internal combustion engine

US4174638A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Erich Zabler · Blankenloch, DE
• Walter Jansche · Durmersheim, DE
• Frieder Heintz · Blankenloch, DE

Key dates

• Filing date: Jun 5, 1978
• Grant date: Nov 20, 1979
• Expiry date: Jun 5, 1998

Classification

• Technology area (CPC G): Physics
• CPC primary: G01L9/0089
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A pressure pickup for measuring the pressure in the intake manifold of an internal combustion engine. The pressure pickup comprises a part, movable in response to the manifold pressure, to which is coupled means for short-circuiting the magnetic flux lines of an electromagnet so that the change in flux lines is detected by the electromagnetic coil and measured by an induction evaluation circuit and thus indirectly measuring the manifold pressure.