(EN) The invention concerns a device for controlling an internal combustion engine (601), comprising means (600) for generating a signal for controlling the internal combustion engine (601), a sensor (602) for supplying a pressure measurement signal of a combustion chamber of the internal combustion engine (601), and a filtering device (603) for generating a filtered pressure signal, said filtering device (603) being made from analog electronic components. The invention is characterized in that the filtering device (603) has a closed loop configuration with a direct portion (201, 202, 203, 204) and a return portion (205), the return portion comprising a module for re-injecting (205) said filtered pressure signal (P) and the direct portion including: a first subtracting module (201) generating the difference between said pressure measurement signal (Pr) and the output of said re-injection module (205), a static non-linear module (202) in output of said subtracting module, an integrating module (204) generating said filtered pressure signal (P) by integration from the output of said non-linear module.