| 摘要 |
A system for the post-treatment of exhaust gases comprising an oxidation catalyst and/or a catalytic phase integrated with the particle filter comprises two stages of delayed fuel injection to maintain the working temperature of the catalyst. A system for the post-treatment of exhaust gases comprising an oxidation catalyst and/or a catalytic phase integrated with the particle filter comprises two stages of delayed fuel injection to maintain the working temperature of the catalyst. The control system comprises the stages: (1) delayed injection, at an angle relative to top dead center of the crankshaft, of a main quantity (Q + Q2') of fuel when the temperature of the oxidation catalyst and/or catalytic phase is less than a determined threshold; and (2) Injection of a main quantity, Q1, of fuel in the region of top dead center and an additional quantity (Q2- post-injection) injected after the main quantity, when the temperature of the oxidation catalyst is greater than the determined threshold. |
