增压柴油机上混燃乙醇的试验研究

Experimental Study on Turbocharged Diesel Engine with Ethanol-diesel Blend

通过在增压柴油机上燃用柴油和混燃一定比例的乙醇的对比试验,研究了混燃乙醇对柴油机工作性能和排放特性的影响。试验表明,在柴油里混燃一定比例的乙醇可以降低燃油消耗率,提高柴油机的有效热效率;同时,混燃乙醇对柴油机的功率影响较小,完全能够满足柴油机的各工况运行需要。

A comparative experiment of turbocharged diesel engine by combusting pure diesel and a fixed ratio of ethanol and diesel was conducted in order to discuss the effects on diesel engine performance and emission characteristic. Experiment results showed that combusting a fixed ratio of ethanol and diesel could decrease the brake specific fuel consumption and raise effective thermal efficiency, at the same time, it had little influence on power and fit for the working conditions of diesel engine. Thus, the cost was reduced, and the dynamical property, economical property and soot emission were improved in a certain degree. The findings of this study provided meaningful thought on energy crisis and environmental protection.