In the condition of optimization, the diesel engine which originally only met Euro II can meet the requirement of Euro III, using the combination of the NOx catalyst and the oxidation catalyst.

• 在进行优化控制的条件下,组合使用NOx催化剂和氧化催化剂,使原来只达到欧II排放法规要求的柴油机达到了欧III法规要求。