abstract |
The method disclosing low pressure EGR valve in a kind of low pressure EGR route for operating explosive motor, described explosive motor is equipped with after-treatment system, and described after-treatment system has the urea injector of SCR device (SCRF) upstream on the filter.During the regenerative process of SCRF, monitor conditions for use, for opening the low pressure EGR valve of low pressure EGR route when conditions for use meets.If carbamide injection is not performed, conditions for use can be met. |