INTAKE AIR QUANTITY VARIATION DETECTING DEVICE

摘要

An intake air quantity variation detecting device capable of accurately detecting a variation in intake air quantity between cylinders in an internal combustion engine having the plurality of cylinders. A fuel injection quantity is changed from an injection quantity in a stoichiometric operation to an injection quantity increasing side or an injection quantity decreasing side. The width of a variation in torque or rotational speed at that time is obtained, and the width of the variation in the torque or the rotational speed is outputted as an index value indicating the degree of the variation in the intake air quantity between the cylinders.