Thermal Stress on a Piezoelectric Pressure Transducer in the Combustion Chamber of an SI-Engine

1985 ◽  
Author(s):  
H. J. Schäfer ◽  
O. Krull ◽  
B. Maege

2004 ◽  
Vol 26 (2) ◽  
pp. 83-92
Author(s):  
Bui Van Ga ◽  
Phung Xuan Tho ◽  
Nhan Hong Quang ◽  
Nguyen Huu Huong

A phenomenological model has been established to predict the velocity distribution of LPG (Liquefied Petroleum Gas) jet in combustion chamber of spark ignition (SI) engine. A shaped coefficient \(\beta\) governing the similarity of velocity profiles of LPG jets has been defined based on the theoretical and experimental analyses of turbulent diffusion jets. The results show that \(\beta\) is constant for steady jet but it is not the case for unsteady one. The model will enable us to calculate the velocity profiles of LPG jet after ending injection. This is necessary for research of stratified combustion in direct injection LPG SI engines.



1967 ◽  
Vol 38 (6) ◽  
pp. 740-742 ◽  
Author(s):  
K. W. Ragland ◽  
R. E. Cullen


1999 ◽  
Author(s):  
Atsushi Higuma ◽  
Takashi Suzuki ◽  
Masatake Yoshida ◽  
Yasufumi Oguri ◽  
Tamaki Minoyama


2001 ◽  
Vol 2001.76 (0) ◽  
pp. _2-1_-_2-2_
Author(s):  
Kazuhide IWASA ◽  
Daisuke SEGAWA ◽  
Hiroshi ENOMOTO ◽  
Toshikazu KADOTA


Author(s):  
Ruitao Song ◽  
Gerald Gentz ◽  
Guoming Zhu ◽  
Elisa Toulson ◽  
Harold Schock

A turbulent jet ignition system of a spark ignited (SI) engine consists of pre-combustion and main-combustion chambers, where the combustion in the main-combustion chamber is initiated by turbulent jets of reacting products from the pre-combustion chamber. If the gas exchange and combustion processes are accurately controlled, the highly distributed ignition will enable very fast combustion and improve combustion stability under lean operations, which leads to high thermal efficiency, knock limit extension, and near zero NOx emissions. For model-based control, a precise combustion model is a necessity. This paper presents a control-oriented jet ignition combustion model, which is developed based on simplified fluid dynamics and thermodynamics, and implemented into a dSPACE based real-time hardware-in-the-loop (HIL) simulation environment. The two-zone combustion model is developed to simulate the combustion process in two combustion chambers. Correspondingly, the gas flowing through the orifices between two combustion chambers is divided into burned and unburned gases during the combustion process. The pressure traces measured from a rapid compression machine (RCM), equipped with a jet igniter, are used for initial model validation. The HIL simulation results show a good agreement with the experimental data.



2003 ◽  
Author(s):  
Paulo de Tarso De Alexandria Cruz ◽  
João Nildo De Souza Vianna ◽  
Cléverson E Silva Moreira


1997 ◽  
Author(s):  
Deok-Kyu Park ◽  
Han-Sang Kim ◽  
Woo-Tae Kim




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