| 摘要 |
An embodiment of the invention provides a method for operating a hybrid powertrain 100 comprising a motor-generator electric unit 500 and an internal combustion engine 110 equipped with an EGR cooler (310 see fig 2), wherein the operating method comprises the steps of determining an overall power value to be delivered by the hybrid power-train 100, splitting the overall power value into a first contributing power value to be delivered by the internal combustion engine 110 and a second contributing power value to be delivered by the motor-generator electric unit 500; monitoring an index indicative of a clogging level of the EGR cooler (310); and increasing the first contributing power value, if the monitored EGR cooler clogging level index fulfils a predetermined condition. The invention integrates EGR cooler protection strategy with hybrid control to enable reduced NOx emissions even during urban driving. |
