Patent ID: 7712444
Filing Date: 2010-05-11
Classification: F02P,F23Q,G01L

Abstract:
1. A sheathed-element glow plug to be situated in a chamber of an internal combustion engine, comprising: a housing; a pin-shaped heating element extending partially from the housing; and a pressure sensor arranged in an inner chamber of the housing, the pressure sensor, at one end, being in operative connection at least indirectly with the pin-shaped heating element, in order to record an impingement on the heating element conditioned upon a pressure prevailing in the chamber, for determining the pressure prevailing in the chamber, the pressure sensor, at another end, being supported at least indirectly on a fixing element that is connected to the housing; wherein a prestressing element is provided which, at one end, is at least indirectly connected to the heating element and, at another end, is at least indirectly connected to the fixing element, the prestressing element applying a prestressing to the pressure sensor via the heating element and the fixing element; wherein the prestressing element is arranged as a sleeve-shaped prestressing element, the pressure sensor arranged in an interior of the sleeve-shaped prestressing element.