Method for regulating the temperature of a glow plug
AssigneeBorgWarner Ludwigsburg GmbH
InventorJörg Stöckle
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Abstract
Described is a method for regulating the temperature of a glow plug of an internal combustion engine, wherein a target resistance is determined from a target temperature by means of a resistance temperature characteristic of the glow plug and the actual resistance of the glow plug is regulated to the target resistance, the glow plug is heated to determine the resistance temperature characteristic of the glow plug, and thereby determining a resistance gradient and an electrical resistance of the glow plug is measured before the heating or at a defined time during the heating, using both the measured resistance and the resistance gradient, the resistance temperature characteristic is determined.
Claims13
A method for regulating the temperature of a glow plug of an internal combustion engine, comprising:
- (a) determining a resistance temperature characteristic of the glow plug by:
- (i) heating the glow plug and at the same time determining a resistance gradient;
- (ii) measuring the electrical resistance of the glow plug before the hearing or at a defined time during the heating;
- and
- (iii) using both the measured resistance and the resistance gradient to determine the resistance temperature characteristic;
- (b) determining a target resistance from a target temperature by means of the resistance temperature characteristic;
- and
- (c) regulating the actual resistance of the glow plug to the target resistance.
Dependencies are inferred from the claim text.