Method for exhaust temperature modeling of vehicle and device and method for exhaust temperature estimating of vehicle

摘要

The present invention relates to an apparatus for estimating the exhaust temperature of a vehicle and a method thereof, and more particularly to a method of modeling an exhaust temperature of a vehicle capable of increasing the accuracy of exhaust temperature estimation after cold start, . An apparatus for estimating an exhaust temperature of a vehicle according to an embodiment of the present invention includes an exhaust gas detecting unit for detecting an amount of exhaust gas and an exhaust gas analyzing unit for analyzing the amount of exhaust gas detected by the exhaust temperature modeling using a correction coefficient according to the amount of exhaust gas, An exhaust temperature estimating unit for estimating an exhaust temperature at startup, and an ECU (Electronic Control Unit) for controlling the catalyst heating and the engine based on the exhaust temperature estimated at the time of cold start. Here, the exhaust temperature estimating unit estimates the exhaust temperature for a predetermined time after the cold start, and provides the result to the ECU.