| 摘要:16RK270型柴油机功率提升要求为:功率提升10%；排放满足IMO TierⅡ排放法规要求；最大燃烧压力限制在16 MPa以下；且保证尽量低的燃油消耗率。对此，从可变气门定时、匹配增压器、EGR、米勒循环、可变喷嘴环等技术入手，应用GT-power、AVL-excite软件建立仿真计算模型，对上述几种技术进行分析比较。结合柴油机的结构改变和投入产出比，最终确定:相对较优的技术方案为Miller循环与VTG技术结合并匹配高压比增压器。 |
| 关键词: 柴油机 排放 功率 仿真 |
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| Power Promoting of 16RK270 Diesel Engine Meeting With IMO TierⅡ |
| Liu Qian,Zhang Weiwei,Xiong Changjun,Yu Chenghan,Zhang Mingguo |
| Dalian CRRC Diesel Engine Co., Ltd., Liaoning Dalian 116022 |
| Abstract:The power increasing requirements of 16RK270 diesel engine are 10 % power increase, IMO TierⅡ compliant emissions level, maximum burst pressure under 16 MPa, and lowest fuel consumption rate as possible.To meet with these requirements, varied technologies are adopted, such as variable valve timing, matching supercharger, EGR, Miller cycle and variable nozzle ring. Simulation model based on GT-power and AVL-excite software was built up to analyze these technologies and compare them with each other. Combined with the change of engine structure and input-output ratio, the optimal technical solution is "Miller cycle+VTG+high ratio turbocharger". |
| Key words: diesel engine emission power simulation |
