氨能分数和喷油角度对氨-柴双燃料发动机燃烧过程的影响研究
Study on the Effect of Ammonia Energy Fraction and Injection Angle on the Combustion Process of Ammo-nia-Diesel Dual-Fuel Engine
为了研究在不同柴油喷射角度下氨-柴掺混燃料在发动机中的燃烧与排放特性，使用GT-Power一维模拟仿真软件与CONVERGE三维CFD模拟仿真软件对卡特彼勒3401进行了建模。使用数值模拟方法研究了不同柴油喷射角度下氨-柴燃料的掺混过程、燃烧过程与排放物的生成。结果表明：在相同工况下，40%氨能分数（E40）是比较合适的氨气掺混比。在E40与柴油喷射开始时间为-30°ATDC的情况下，不同的柴油喷射角度会使柴油在燃烧室内的分布产生变化。在80°与50°喷射角度的情况下，燃烧室内的氨气燃烧比较完全，发动机的排放性能得到大幅提升。
In order to study the combustion and emission characteristics of the ammonia-diesel dual-fuel in the engine under different diesel injection angles, the Caterpillar 3401 was modeled using GT-Power one-dimensional simulation software and CONVERGE three-dimensional CFD simulation software. Numerical simulation was used to study the blending process, combustion process and emission generation of ammonia-diesel dual-fuel under different diesel injection angles. The results showed that 40% ammonia energy fraction (E40) is a more appropriate ammonia blending ratio under the same operating conditions. In the case of E40 with a diesel injection start time of -30°ATDC, different diesel injection angles produce changes in the distribution of diesel in the combustion chamber. At an injection angle of 80° and 50°, the ammonia in the combustion chamber is burned more completely and the emission performance of the engine is greatly improved.
张正;史程;邸立明;
燕山大学 车辆与能源学院,秦皇岛 066004;燕山大学 车辆与能源学院,秦皇岛 066004;燕山大学 车辆与能源学院,秦皇岛 066004;
TK421.2
ammonia diesel heavy duty diesel engine spray angle
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