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International Journal of Automotive Engineering، جلد ۶، شماره ۳، صفحات ۲۲۳۶-۲۲۴۲
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی An Efficient Method for Knock Signal Denoising in Spark Ignition Engine
چکیده انگلیسی مقاله One of the factors that affects the efficiency and lifetime of spark ignited internal combustion engine is “knock”. Knock sensor is a commonly used to detect this phenomenon. However, noise, limits detection accuracy of this sensor. In this study, Empirical Mode Decomposition (EMD) method is introduced as a fully adaptive signal-based analysis. Then, based on weighting decompositions, a method for reducing knock signal noise to enhance detection accuracy of knock, has been proposed. Then, the presented method has been evaluated using recorded signals from four engine cylinders. Internal pressure of each cylinder were recorded and used as reference for knock detection. Test results verifies that knock detection accuracy improved by about 11.3%. The results of optimization method were consistent with our expectations and the weights of middle levels are higher than other levels, which means that the proposed method not only extracts the main frequencies of knock, but also assigns reasonable weights to them.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله a مشرفی | a. moshrefi


نشانی اینترنتی http://www.iust.ac.ir/ijae/browse.php?a_code=A-10-63-137&slc_lang=fa&sid=en
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/404/article-404-409132.pdf
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده عمومی
نوع مقاله منتشر شده پژوهشی
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