Non-Intrusive Estimation of In-Cylinder Pressure and Combustion Parameters Using an External Accelerometer

作     者：Jeon, Woongsun Georgiou, Anastasis Sun, Zongxuan Rothamer, David A. Kim, Kenneth Kweon, Chol-Bum Rajamani, Rajesh 

作者机构：Combat Capabilities Development Command's Army Research Laboratory United States School of Electrical and Electronics Engineering Chung-Ang University Seoul06974 Korea Republic of Department of Mechanical Engineering University of Minnesota MinneapolisMN55455 United States Department of Mechanical Engineering University of Wisconsin-Madison MadisonWI53706 United States Army Research Laboratory United States 

出 版 物：《SSRN》 

年 卷 期：2023年

核心收录：

主　　题：Accelerometers 

摘      要：This paper develops a new approach to estimation of in-cylinder pressure and combustion variables in a diesel engine using measurements from a non-intrusive accelerometer. The new estimation approach is based on separating the combustion component of the acceleration signal from the non-combustion component. Only the combustion component of the acceleration is well correlated with the combustion component of in-cylinder pressure. A first order differential equation model between these combustion components is proposed and used to estimate in-cylinder pressure. The combustion component of acceleration is obtained by using a finite impulse response model and a real-time adaptive least squares algorithm that utilizes the crankshaft speed signal to find and subtract the speed-related component of the acceleration measurement. The proposed method is evaluated experimentally using a turbocharged high speed 4-cylinder compression-ignition direct-injection (CIDI) engine and over 85 data sets of different operating conditions involving both single and double (pilot and main) injections. © 2023, The Authors. All rights reserved.