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http://dx.doi.org/10.5050/KSNVN.2006.16.4.319

Analysis of the Crankshaft Behavior on In-plane and Out-plane Mode at the Firing Stage  

Abu Aminudin (한양대학교 대학원 기계공학과)
Lee, Hae-Jin (한양대학교 대학원 기계공학과)
Lee, Jung-Youn (경기대학교 기계시스템디자인공학부)
Oh, Jae-Eung (한양대학교 기계공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.16, no.4, 2006 , pp. 319-328 More about this Journal
Abstract
This paper presents a method for analysis of the mechanical behavior of a crankshaft in a four-cylinder internal combustion engine. The purpose of the analysis was to study the characteristics of the shaft in which the pin and arm parts were assumed to have a uniform section in order to simplify the modal analysis. The results of natural frequency transfer function and mode shape were compared with those obtained by experimental work. The results obtained from the comparison showed a good agreement with each other and consequently verified the analysis model. Furthermore, a prediction of crankshaft characteristics under the firing condition, by using the model, was performed. This study describes a new method for analyzing the dynamic behavior of crankshaft vibrations in the frequency domain based on the initial firing stages. The new method used RMS values to calculate the energy at each bearing journal and counter weight shape modification under the operating conditions.
Keywords
Crankshaft; In-plane Mode; Out-plane Mode; Firing Condition; RMS Value;
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