شماره ركورد كنفرانس :
2727
عنوان مقاله :
New Effective Time Domain Method for Knock Signal Denoising in Internal Combustion Engine
عنوان به زبان ديگر :
New Effective Time Domain Method for Knock Signal Denoising in Internal Combustion Engine
پديدآورندگان :
Moshrefi Amirhossein نويسنده Amirkabir University of Technology - Electrical Engineering Department , Shalchian Majid نويسنده Amirkabir University of Technology - Electrical Engineering Department
كليدواژه :
Knock sensor , Non- Local Mean method , component , Knock detection , Spark ignition turbocharged engine
عنوان كنفرانس :
اولين كنفرانس بين المللي دستاوردهاي نوين پژوهشي در مهندسي برق و كامپيوتر
چكيده لاتين :
uncontrolled expansion of combustion wave in spark ignited internal combustion engine causes knock effect
which seriously degrade efficiency and lifetimes of the engine. Thus, accurate knock detection and control are essential for
obtaining desired performance from the engine. Usually, knock sensor is used to detect this phenomenon but it has limited
accuracy especially at high engine speeds because of natural vibration and external noises. In this study an effective method
based on Non-Local Mean (NLM) algorithm has been proposed to improve the knock detection accuracy. This method is
evaluated based on four different indicators and four engine cylinders. The results show 32% improvement in knock
detection. Also feasibility of real time execution of this method based on embedded hardware has been studied.
شماره مدرك كنفرانس :
4240260
