Cylinder pressure sensor diagnosis/reinforcement adaptation performing method for combustion engine, involves receiving sensors signals, and determining diagnosis value/adaptation parameter based on moment difference of model torques

摘要

The method involves receiving sensors signals, and calculating a torque of a combustion engine using four different models, which uses sensor signals, under allocation of model torques (Mi, Mi1, Mi2, Mi3, Mi4). A diagnosis value and/or an adaptation parameter are determined based on a moment difference of the model torques. The signals concerns manifold pressure, medium engine rotation speed, firing angle and combustion initiation. An independent claim is also included for a device for diagnosis and/or reinforcement adaptation of a cylinder pressure sensor of a combustion engine.