Measurement method of rotational moment of inertia of engine

摘要

The present invention relates to a method of measuring the rotational moment of inertia of an engine. In the past, systematic research and measurement methods for obtaining rotational inertia moment of an engine from an actual vehicle have not been proposed, The present invention can measure the rotational inertia moment of the engine by measuring and calculating various average pressures of the cylinders from the measuring equipment and the equipment constructed as shown in FIG. 1, and by using the spark plug type piezoelectric sensor, The system detects the braking mean pressure through the dynamometer and analyzes the respective correlations. Based on the results analyzed in the preliminary step, the sum of the urban average pressures in the no-load state without load on the engine is detected A braking torque calculating step of calculating a braking torque based on the obtained result and a relational expression, Calculating the rotational inertia moment of the engine based on the result obtained in the step of calculating the braking torque and the engine propensity of the engine and the relational expression based on the result of the step of calculating the rotational inertia moment of the engine, By measuring the rotational moment of inertia of the engine by number and comparing and analyzing the calculated rotational inertia moment by using the relational expression, it is possible to study the dynamic characteristics and power performance of the engine and the performance of the engine. So that it can be conveniently used in various fields.