Patent · US Expired

Method for heating up an electrical heating element, in particular a glow plug for an internal combustion engine

US6712032B2 · kind B2 · utility

13Cited by

6References

4Claims

0Family size

Assignee

BERU Aktiengesellschaft · DE

Inventors

Gunther Uhl · Waibstadt, DE
Olaf Toedter · Usingen, DE
Heinz-Georg Schmitz · Marbach am Neckar, DE

Key dates

Filing date	Sep 27, 2002
Grant date	Mar 30, 2004
Priority date	—
Expiry date	Sep 27, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02P19/025
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Method for heating an electrical heating element, for example, a glow plug for an internal combustion engine, from an initial temperature to the operating temperature. In order to prevent the heating element from overheating in cases where the initial temperature is higher than a set temperature that is normally taken as a basis, the actual initial temperature of the heating element is first determined, and an amount of electrical power depending on the level of the determined initial temperature is supplied to the heating element. In this way, the supplied amount of electrical power is reduced at higher initial temperatures, thus preventing the heating element from becoming overheated to a temperature at which damage can occur.

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