涡轮增压器
废气再循环
汽车工程
柴油机
平均有效压力
均质压燃
内燃机
废气
燃烧
环境科学
工程类
燃烧室
机械工程
压缩比
化学
废物管理
涡轮机
有机化学
作者
Anup M. Kulkarni,Gregory M. Shaver,Sriram Popuri,Tim R. Frazier,Donald W. Stanton
出处
期刊:Journal of engineering for gas turbines and power
[ASME International]
日期:2009-11-02
卷期号:132 (2)
被引量:7
摘要
This paper describes an accurate, flexible, and computationally efficient whole engine model incorporating a multizone, quasidimension combustion submodel for a 6.7-l six-cylinder turbocharged diesel engine with cooled exhaust gas recirculation (EGR), cooled air, and multiple fuel injections. The engine performance and NOx emissions predicative capability of the model is demonstrated at 22 engine operating conditions. The only model inputs are physical engine control module “control actions,” including injection rates, injection timings, EGR valve position, and variable geometry turbocharger rack position. The model is run using both “open” and “closed” loop control strategies for air/EGR path control, in both cases achieving very good correlation with experimental data. Model outputs include in-cylinder pressure and heat release, torque, combustion timing, brake specific fuel consumption, EGR flow rate, air flow rate, exhaust and intake pressure, and NOx emissions. The model predicts engine performance and emissions with average absolute errors within 5% and 18%, respectively, of true values with “open-loop” air/EGR control, and within 5% and 11% with “closed-loop” air/EGR control. In addition, accurate prediction of the coupling of the in-cylinder combustion and emission-production processes with the boosted, cooled air/EGR gas dynamics is a key characteristic of the model.
科研通智能强力驱动
Strongly Powered by AbleSci AI