Patent ID: 9163605
Filing Date: 2015-10-20
Classification: F02D,F02P,F23Q,H05B

Abstract:
1. A method of using a glow plug control device for closed loop control of the surface temperature of a glow plug of a specific series in an internal combustion engine, comprising: applying a pulse-width-modulated effective voltage to the glow plug connected to the control device and storing in the control device a temperature model displaying the behavior of the series; carrying out an initialization at the installed and connected glow plug ready for use to adapt the temperature model to the behavior of the connected glow plug before the internal combustion engine is started; wherein, during the initialization for adaptation of the temperature model: wherein, during the control process the momentary surface temperature of the glow plug is estimated by a model temperature while the engine is running, said model temperature being established with the aid of the temperature model from the actual values of voltage and of resistance measured at the glow plug during running operation; and wherein the effective voltage applied to the glow plug is changed according to the deviation of the model temperature from a target temperature of the glow plug surface provided to the glow plug control device.