【摘要】 为了达到降低发动机排放及油耗的目的,在发动机冷起动阶段使用一种向排气歧管内喷射二次空气的方法,并研究二次空气喷射系统对冷态发动机排放及油耗的影响。试验结果表明,二次空气喷射系统的应用能有效降低发动机冷起动阶段HC及CO的排放,同时不使油耗增加。更多还原

【Abstract】 In order to reduce engine emissions and fuel consumption, a method of injecting secondary air into the exhaust manifold is used during the cold start of engine. This paper studied the effect of secondary air injection on the emission and fuel consumption of the cold engine. The experimental results show that the application of the secondary air injection system can effectively reduce the emissions of HC and CO at the cold starting stage of the engine without increasing the fuel consumption.更多还原