Misfire detection device for an internal combustion engine, misfire detection system for an internal combustion engine, data analysis device, controller for an internal combustion engine, method of detecting a misfire of an internal combustion engine, and reception executing device

摘要

A misfire detecting device for an internal combustion engine having a crankshaft mechanically connected to an engine generator includes a memory device and a processing circuit. The storage device stores function or mapping data. The function data is data indicating a function that outputs a misfire variable using a rotational waveform variable and a damping variable as input. The misfire variable is a variable that relates to a likelihood that a misfire has occurred. The rotational vibration history variable is a variable that contains information about a difference between values of an instantaneous speed corresponding to short angular intervals different from one another. The damping variable is a variable related to a state of a damping process that controls a torque of the motor generator to reduce vibrations of a power transmission system of a vehicle.