Method for detecting a tumble flow in a cylinder chamber of an internal combustion engine

摘要

For the purpose of detecting a tumble flow in a cylinder chamber of an internal combustion engine, with a characteristic tumble value being determined as a quotient from an angular velocity omegaFK of the tumble movement and an angular velocity omegaMot of the internal combustion engine, a method is proposed in which the asymmetry of a flow field wLDA in the cylinder chamber is detected for a predetermined number of measuring points i with a differential measuring method on a flow test stand and the characteristic tumble value is determined as a result of the asymmetry of the flow field wLDA.Characteristic tumble values can thus be determined in a simple and practical manner.