Device for controlling an internal combustion engine

11:

• A device for controlling an internal combustion engine, comprising:
• means for generating a signal for controlling the internal combustion engine;
• a sensor for supplying a measured pressure signal for pressure measured in a measured combustion chamber of the internal combustion engine;
• and
• a filtering device for generating a filtered pressure signal, the filtering device including analog electronic components, wherein the filtering device has a closed-loop configuration with a direct part and a return part, the return part comprising a reinjection module for reinjecting the filtered pressure signal and the direct part of the loop comprising:
• a first subtractor module generating a difference between the measured pressure signal and the output from the reinjection module,
• a static nonlinear module at the output side of the first subtractor module, and
• an integrator module generating the filtered pressure signal by integrating the output of the nonlinear module.

13:

• The device as claimed in claim 11, further comprising:
• a second subtractor module generating a difference between the measured pressure signal and the filtered pressure signal,
• a low-pass filtering module at the output side of the second subtractor module, and
• an adder module generating a corrected filtered pressure signal in a form of a sum of the filtered pressure signal and the output from the low-pass filtering module.