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当前位置: 首页 > 文章 > 柴油机可调两级增压系统高原自适应控制策略 农业机械学报 2015,46 (9) 335-342
Position: Home > Articles > Self-adapting Control Strategy of Diesel Engine with Regulated Two-stage Turbocharging System on Highland Transactions of the Chinese Society for Agricultural Machinery 2015,46 (9) 335-342

柴油机可调两级增压系统高原自适应控制策略

作  者：
李华雷;利奇;石磊;邓康耀;邢卫东;刘莹
单  位：
上海交通大学动力机械与工程教育部重点实验室;中国北方发动机研究所柴油机增压技术重点实验室
关键词：
柴油机;可调两级增压系统;高原;自适应;控制策略
摘  要：
为提升某V型柴油机的高海拔性能,通过可调两级增压系统的匹配计算,确定了高低压级涡轮和压气机的特性。基于变海拔稳态工况性能目标,进行了柴油机全工况最佳阀门开度和最佳增压压力的标定计算。建立了柴油机的瞬态响应仿真模型,计算分析了海拔高度对增压压力瞬态响应特性的影响规律。根据最佳增压压力MAP图设计了开环和闭环控制策略,在不同海拔高度下研究其改善增压压力瞬态响应特性的能力。结果表明:与开环控制策略相比,闭环控制策略能更好地改善柴油机变海拔的瞬态响应性能。通过采用增压压力的闭环控制策略,平原工况的增压系统响应时间由2.82 s减少到2.41 s,海拔3 000 m时由3.20 s减少到2.32 s,响应时间减少了27.5%;海拔4 500 m时由3.41 s减少到2.25 s,在很大程度上减弱了海拔高度对发动机瞬态响应特性的影响。
译  名：
Self-adapting Control Strategy of Diesel Engine with Regulated Two-stage Turbocharging System on Highland
作  者：
Li Hualei;Li Qi;Shi Lei;Deng Kangyao;Xing Weidong;Liu Ying;Key Laboratory for Power Machinery and Engineering,Ministry of Education,Shanghai Jiao Tong University;National Key Laboratory of Diesel Engine Turbocharging Technology,Chinese North Engine Research Institute;
关键词：
Diesel engine Regulated two-stage turbocharging system Highland Self-adapting;;Control strategy
摘  要：
To improve the dynamic performance of a V-type diesel engine at high altitude,the matching calculation was carried out between the diesel engine and regulated two-stage turbocharging system,and the two-stage turbines and compressors were determined. The calibration results of optimum valve opening and optimum boost pressure were achieved at all operating conditions according to the steady performance target at different altitudes. The transient simulation model was constructed,and the effect of different altitudes on the transient response characteristic of boost pressure was investigated. The open-loop and closed-loop control strategies were designed based on the MAP diagram of optimum boost pressure to improve the transient response of boost pressure at different altitudes. The results showed that the closedloop control strategy can achieve better transient response compared with the open-loop control strategy.With the closed-loop control strategy of boost pressure,the response time was reduced from 2. 82 s to2. 41 s at the altitude of 0 m. The response time was reduced from 3. 20 s to 2. 32 s at the altitude of3 000 m,and it was reduced from 3. 41 s to 2. 25 s at the altitude of 4 500 m. The effect of different altitudes on transient response characteristic was largely weakened with the closed-loop control strategy.

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