论文部分内容阅读
在一台燃用纯甲醇的电控点燃式发动机上,通过台架试验研究了其常规气体污染物和醛酮类污染物的排放特性。研究结果表明:三效催化器对甲醇发动机的常规污染物和非常规污染物排放均有良好的净化效率,催化器后的常规污染物排放能够满足GB 14762—2002的排放限值;甲醇发动机排放的醛酮类污染物以甲醛、乙醛、丙烯醛和丙酮等C1~C3污染物为主,而C3以上的醛酮类化合物占排气中醛酮总量的比例较小;醛酮污染物的比排放量随着发动机负荷的增加先减少后增加,随着转速上升明显增加。
On a pure methanol-based electrically controlled ignition engine, the emission characteristics of its conventional gas pollutants and aldehyde-ketone pollutants were studied by a bench test. The results show that the three-way catalytic converter has a good purification efficiency for conventional pollutants and unconventional pollutants emitted from methanol engines, and the conventional pollutant emission after the catalyst can meet the emission limits of GB 14762-2002. The emission of methanol engine Of aldehydes and ketones pollutants such as formaldehyde, acetaldehyde, acrolein and acetone C1 to C3 pollutants mainly C3 aldehydes and ketones above the total amount of aldehydes and ketones in the exhaust gas accounted for a small proportion; aldehyde and ketone pollutants The specific emission decreases first and then increases with the increase of engine load, and increases obviously with the increase of engine speed.