Rapid coking verification method based on EGR rate temperature correction strategy

The invention relates to the technical field of engine EGR (Exhaust Gas Recirculation), in particular to a rapid coking verification method based on an EGR rate temperature correction strategy. The environment temperature corresponding to the highest total HC emission amount of the EGR system is determined, and therefore the most strict test working condition of EGR valve coking is determined; eGR valve coking test verification is carried out; and EGR valve coking evaluation is obtained. According to the method, the influence of the environment temperature on the original exhaust HC concentration of the engine is considered, and meanwhile, the influence that the EGR rate is corrected along with the reduction of the environment temperature is also considered. The above two factors have a mutual association relationship, and through environment bin tests at different environment temperatures, the most stringent test working condition of EGR valve coking is confirmed, and the risk of EGR valve coking under the l