Function testing method for engine exhaust bypass line element uses analysis of exhaust gas temperature data obtained upon opening bypass element

摘要

The function testing method uses analysis of measured temperature data for the exhaust gas temperature, obtained after opening of the bypass element (24), contained in the exhaust bypass line (22) for regulating the quantity of the exhaust gas bypassing an exhaust gas turbocharger (40). The exhaust gas temperature data may be compared with reference data, e.g. data obtained for a temperature model. An Independent claim for a function testing device for a bypass element in an IC engine exhaust bypass line is also included.