Patent · US Active

Method for controlling a glow plug

US8656898B2 · kind B2 · utility

1Cited by

4References

10Claims

0Family size

Assignee

BORGWARNER BERU SYSTEMS GMBH · DE

Inventors

Martin Sackmann · Memmingen, DE
Bernd Last · Reutlingen, DE
Marc Rottner · Mühlacker, DE
Hans Houben · Würselen, DE
Olaf Toedter · Usingen, DE

Key dates

Filing date	Mar 9, 2011
Grant date	Feb 25, 2014
Priority date	—
Expiry date	Feb 23, 2032

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D35/023
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for controlling a glow plug to a target value of the surface temperature while the engine is running. An effective voltage is generated by pulse width modulation of a vehicle electrical system voltage. This effective voltage is applied to the glow plug. The electric resistance of the glow plug is measured and compared to a resistance value expected for the target value of the surface temperature. The effective voltage is varied as a function of the deviation of the measured value of the electric resistance from the expected value of the electric resistance. A pressure sensor of the glow plug is used to measure the combustion chamber pressure. The resistance value expected for the target value of the surface temperature is determined as a function of the combustion chamber pressure.

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