不同排量小型四冲程通用汽油机的排放控制策略

过量空气系数是影响小型通用汽油机动力、经济、排放性能和运转稳定性的关键因素之一.从排放性能出发,不同排量的小型四冲程汽油机对过量空气系数的要求是不一样的.以排放控制为重点,并且能兼顾其他性能的过量空气系数与小型四冲程通用汽油机的优化匹配是本文研究的重点.通过试验研究和理论分析,探讨不同排量的小型四冲程通用汽油机的排放控制策略.

Emission Control Strategy for the Different Displacement Small Utility S.I. Engines

Excess air ratio is one of the key factors that effects the power, economic, emission performances and working stability. For reducing the emissions, different displacement small utility S.I. engine would match different excess air ratio. By matching the excess air ratio with the small utility S.I. engine to get better emissions and the other performances is the key point in this paper. Through the experimental investigation and theoretic analysis, this paper discusses the strategy that controls the exhaust emissions of small utility S.I. engine.