Patent · US Expired

Glow plug with electronic component for switching between heating and ion sensing functions

US6150634A · kind A · utility

7Cited by

2References

10Claims

0Family size

Assignee

BERU Aktiengesellschaft · DE

Inventors

Michael Haussner · Memmingen, DE
Heinz-Georg Schmitz · Marbach am Neckar, DE
Gunter Uhl · Waibstadt, DE

Key dates

Filing date	Nov 15, 1999
Grant date	Nov 21, 2000
Priority date	—
Expiry date	Nov 15, 2019

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF23Q7/001
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

A glow plug comprises a heating rod with an inner heater coil and optionally at least one control coil, the heating rod being insulated from the glow plug body and is provided with a plug-type or screw terminal for the power supply voltage. Furthermore, the terminal (4) has an electronic component (6), preferably a chip, with a terminal (7) connected to the power supply voltage, a terminal (8) connected to the glow tube (1.3) and a terminal (9) connected to the body (3). The electronic component (6) is designed as a control element for switching the functioning of the glow plug between a heating function and a sensing function for measuring the ion flow in the combustion space area in proximity to the heating rod (1).

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