A glow plug includes a heating rod, a plug body, a mounting device for mounting the heating rod, permitting axial translation movements of the heating rod relative to the plug body, a load sensor which is interposed between the heating rod and the plug body, and an electrical link, called the sensor link, which includes at least one signal line. The powertrain preferably comprises hybrid powertrain having a plurality of torque-generative devices connected to a transmission. Furthermore, the device includes a receiver, which surrounds an opening in the exhaust gas conduit wall and which is designed for the tight bearing of the nozzle head and for the releasable fastening of the injection nozzle.