Problems of identifying misfires based on the signal from the standard crankshaft position sensor

Abstract

The article is devoted to the development of an algorithm for determining ignition gaps based on the signal of a standard crankshaft position sensor. Ignition failures are one of the main reasons for the deterioration of the environmental characteristics of the engine, reduced dynamics and fuel efficiency of the car, failure of the catalytic converter. Timely detection and informing the driver is an important and urgent task. The crankshaft of the engine is an integrating link that senses torques from all acting forces, therefore, its angular velocity and acceleration reflect the flow of the working process in the cylinders. In order to optimize production costs, it is logical to use the signal of a standard crankshaft position sensor with appropriate mathematical processing to detect combustion disorders. Depending on the engine operating mode, ignition failures have a different effect on the dynamics of the crankshaft. An additional complication in solving the problem under consideration is the displacement of the center of the incremental wheel relative to the axis of rotation of the shaft.