Development of IMEP Estimation and Control Algorithm Using In-Cylinder Difference Pressure for Passenger Diesel Engines

被引：3

作者：

Chung, Jaesung ^{[1
]}

Oh, Seungsuk ^{[1
]}

Park, Inseok ^{[1
]}

Sunwoo, Myoungho ^{[2
]}

机构：

[1] Hanayng Univ, Dept Automot Engn, Seoul, South Korea

[2] Hanyang Univ, Dept Automot Engn, Seoul, South Korea

来源：

TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS B | 2012年 / 36卷 / 09期

关键词：

Indicated Mean Effective Pressure; Cylinder Pressure; Difference Pressure; Torque Control; Torque Estimation;

D O I：

10.3795/KSME-B.2012.36.9.915

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this study, we propose a new method for estimating the IMEP using difference pressure, which is the pressure difference between the cylinder pressure and the motoring pressure. The estimated IMEP, denoted as IMEPdiff optimizes the theoretical IMEP calculation range based on the fact that the difference pressure exists between the start and the end of combustion. IMEP is verified to have a high linear correlation with IMEP with R-2 of 0.9955. The proposed method can estimate the IMEP with 21% of the cylinder pressure data and 31% of the calculation effort compared to the theoretical IMEP calculation method, and therefore, it has great potential for real-time implementations. The estimation and control performance of IMEPdiff, is validated by engine experiments, and by controlling IMEPdiff, the torque variation between the cylinders was reduced.

引用

页码：915 / 921

页数：7

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