Method for Optimizing Exhaust Temperature Rise based On Low Ambient Temperature and Hybrid Electric Vehicle Thereof

摘要

In the hybrid vehicle 1 according to the present invention, in the low ambient temperature condition of RDE (Real Driving Emission), the engine coolant temperature, the exhaust temperature, and the outside temperature are used to determine the target SOC (State Of Charge) of the battery. The power generation control is performed by raising the target SOC, and by increasing the exhaust temperature of the exhaust gas by the engine operation by the power generation control to reach the catalyst activation temperature, the catalyst activation temperature is reached without post-injection even under the RDE low ambient temperature condition of -7℃. It implements features that prevent deterioration of fuel economy, CO, and HC.