基于飞轮转速及其波动的气缸IMEP估计模型

中国机械工程 ›› 2013, Vol. 24 ›› Issue (09): 1210-1214.

基于飞轮转速及其波动的气缸IMEP估计模型

甄龙信;韦小刚;滕晓雷

燕山大学，秦皇岛，066004

出版日期:2013-05-10 发布日期:2013-05-16
基金资助:
河北省科学技术研究与发展计划资助项目（10215602D）；国家自然科学基金资助项目(51275442)
National Natural Science Foundation of China（No. 51275442）

Cylinder IMEP Estimation Model Based on Flywheel Speed and Speed Variation

Zhen Longxin;Wei Xiaogang;Teng Xiaolei

Yanshan University,Qinhuangdao，Hebei，066004

Online:2013-05-10 Published:2013-05-16
Supported by:
National Natural Science Foundation of China（No. 51275442）

摘要/Abstract

摘要：

分析了四缸汽油机各缸平均指示压力(IMEP)与对应的飞轮平均角速度和角速度波动乘积之间的线性相关性，得出其线性相关性较弱的结论。采用最小二乘参数识别法得到了利用飞轮平均角速度和角速度波动估计各缸IMEP的单工况模型，以平均角速度、角速度波动和平均负载的多项式模型代替单工况模型中的模型系数得到了估计IMEP的稳态工况通用模型，IMEP的估计值和实测值之间的相对误差在8%以内。

关键词: 飞轮转速, 转速波动, 平均指示压力(IMEP), 估计模型

Abstract:

The correlation among IMEP of each cylinder and product of flywheel mean angular velocity and angular velocity variation was analyzed in four cylinder gasoline engine，and their linear correlation was weak. The single operating condition model estimating IMEP of each cylinder through flywheel mean angular velocity and angular velocity variation was obtained by least square parametric recognition method. The steady-state condition model estimating IMEP of each cylinder was obtained by substituting polynomial of mean angular velocity, angular velocity variation and mean load for model index in single operating condition model. The error between estimated IMEP values and measured ones is below 8 percent.

Key words: flywheel speed, speed variation, indicated mean effective pressure(IMEP), estimation model

中图分类号:

U464

甄龙信, 韦小刚, 滕晓雷. 基于飞轮转速及其波动的气缸IMEP估计模型[J]. 中国机械工程, 2013, 24(09): 1210-1214.

JUAN Long-Shen, HUI Xiao-Gang, TENG Xiao-Lei. Cylinder IMEP Estimation Model Based on Flywheel Speed and Speed Variation[J]. China Mechanical Engineering, 2013, 24(09): 1210-1214.

参考文献

[1]Oh S,Kim D,Oh B, et al. Real-time IMEP Estimation and Control Using an In-cylinder Pressure Sensor for a Common-rail Direct Injection Diesel Engine[J]. J. Eng. Gas Turbines Power, 2011,133(6): 1-9.
[2]万国强，黄英，张付军,等. 面向控制的柴油机IMEP在线计算方法及试验[J]. 内燃机学报， 2011， 29(3)：277-281.
Wan Guoqiang, Huang Ying, Zhang Fujun, et al. On-line IMEP Calculation Method for Diesel Engine Control and Experimental[J]. Transactions of CSICE, 2011, 29(3):277-281.
[3]李建秋，欧阳明高，周明,等. 发动机飞轮转速的传递函数分析[J]. 内燃机学报，2001，19(6)：582-587.
Li Jianqiu, Ouyang Minggao, Zhou Ming, et al. Transfer Function Analysis of the Engines Flywheel Speed[J]. Transactions of CSICE, 2001, 19(6):582-587.
[4]王赟松，褚福磊，郭丹. 基于二阶滑模技术的内燃机气缸压力的估计[J]. 内燃机学报，2004，22(6)：556-561.
Wang Yunsong,Chu Fulei, Guo Dan. Cylinder Pressure Estimation for Engines Using Second-Order Sliding Modes[J]. Transactions of CSICE, 2004, 22(6):556-561.
[5]Williams J, Witter M C. Individual Cylinder IMEP Estimation Using Crankshaft Angular Velocity Measurements[J]. SAE Paper，2001-01-0990.
[6]Rackmil C I, Mckay D, Malaczynski G W. Method for Estimation of Indicated Mean Effective Pressure for Individual Cylinders from Crankshaft Acceleration: US, 7623955[P]. 2009-11-24.
[7]Kenji N, Tetsuya K, Yoichi T，et al. Estimation of Indicated Mean Effective Pressure Using Crankshaft Angular Velocity Variation[J]. SAE Paper，2011-32-0510.
[8]刘世元，杜润生，杨叔子. 利用转速波动信号在线识别内燃机气缸压力的研[J]. 内燃机工程，2000(3)：37-43．
Liu Shiyuan, Du Runsheng, Yang Shuzi. Research on On-line Identification of In-cylinder Pressure by Using Speed Fluctuation Signal[J]. Chinese Internal Combustion Engine Engineering, 2000(3): 37-43．