This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
An Experimental Study on Knock Sensing for a Spark Ignition Engine
Annotation ability available
Sector:
Language:
English
Abstract
In this study to develop a knock sensor for a high power engine, spark timing is selected as a design parameter and the knock factors are examined for 4-cycle 4-cylinder engine with different spark timing.
Knocking occurrence crank angle, knocking pressure and knocking intensity are measured by a statistical method in which 10 data per 1 crank degree for 120 cycles are selected.
Since, knock sensor detects cylinder wall vibration and estimates pressure vibration in a combustion chamber, cylinder pressure and engine block vibration are detected by pressure transducer and acceleration sensor, respectively, and these two signals are analyzed by frequency analysis method and compared with theoretical knocking mode in the combustion chamber.
A design parameter of knocking sensor is determined by these results.
Recommended Content
Citation
Jang, S., Lee, Y., Oh, T., and Park, K., "An Experimental Study on Knock Sensing for a Spark Ignition Engine," SAE Technical Paper 931902, 1993, https://doi.org/10.4271/931902.Also In
References
- Ricardo “Recent Research Work on Internal Combustion Engine” Trans. SAE 17Pt. 1 1 1922
- “NTK Knock Sensor” JAPAN SPECIAL METAL LTD. 1990 1 24
- “Knock Control System” MITSUBISHI AUTOMOTIVE PRODUCTS
- Douaud, A. Eyzat, P. “DIGITAPAN On - Line Acquisition and Processing System for Instantaneous Engine Data Application” SAE Paper 770218 1977
- Yamashita S. “Knock Sensor” SAE Japan 29 370 1990 8