Control method of applying / not applying misfire detection logic

摘要

The present invention relates to a method for controlling the application / non-application of misfire detection logic applied to a vehicle having a wheel speed sensor for detecting a vehicle speed,;A first step of receiving an output signal of a wheel speed sensor for detecting a speed of a vehicle; A second step of integrating the output signal of the wheel speed sensor input in the first step in segment units divided by a predetermined number in a time domain; A third step of calculating a roughness A of the road by filtering the integrated value in the second step; A fourth step of fetching a reference value B for determining the roughness of the road stored in advance by a mapping method; A fifth step of determining whether the roughness A of the road calculated in the third step is greater than the reference value T fetched in the fourth step; In the fifth step, when the roughness (A) of the road is less than the reference value (B), it consists of a sixth step to execute the misfire detection logic;Calculate the roughness of the road by integrating the signal of the wheel speed sensor and compare it with a predetermined reference value, and if the roughness of the road is severe, prevent the misfire detection logic from being executed. It is possible to prevent an error of incorrectly determining that the misfire is true.