scholarly journals Vibration Response and Noise Radiation of Engine Block Coupled with the Rotating Crankshaft and Gear Train

2011 ◽  
Vol 6 (4) ◽  
pp. 765-777 ◽  
Author(s):  
Kazuhide OHTA ◽  
Kouichiro IKEDA ◽  
Guangze ZHENG ◽  
Takahiro OKIMOTO ◽  
Iwao HONDA
Keyword(s):  
Vibration Response ◽  
Gear Train ◽  
Engine Block ◽  
Noise Radiation

scholarly journals Vibration Response and Noise Radiation of Engine Block Coupled with the Rotating Crankshaft and Gear Train

2009 ◽  
Vol 75 (752) ◽  
pp. 789-795
Author(s):  
Kazuhide OHTA ◽  
Kouichiro IKEDA ◽  
Guangzu ZHENG ◽  
Takahiro OKIMOTO ◽  
Iwao HONDA
Keyword(s):  
Vibration Response ◽  
Gear Train ◽  
Engine Block ◽  
Noise Radiation

scholarly journals 627 Vibration and noise radiation of engine block coupled with rotating crankshaft and gear train

2008 ◽  
Vol 2008 (0) ◽  
pp. _627-1_-_627-6_
Author(s):  
Kazuhide Ohta ◽  
Kouichiro Ikeda ◽  
Guangzu Zeng ◽  
Takahiro Okimoto ◽  
Iwao Honda
Keyword(s):  
Gear Train ◽  
Engine Block ◽  
Noise Radiation

Characteristic Study on the Dynamic Response of Block Based on the EMD Technique of Feature Extraction

2011 ◽  
Vol 88-89 ◽  
pp. 93-98
Author(s):  
Xian Feng Du ◽  
Zhi Jun Li ◽  
Fong Rong Bi ◽  
Jun Hong Zhang ◽  
Xia Wang ◽  
...  
Keyword(s):  
Feature Extraction ◽  
Original Data ◽  
Response Characteristic ◽  
Vibration Response ◽  
Engine Block ◽  
Intrinsic Mode Functions ◽  
Feature Extraction Method ◽  
Mode Decomposition ◽  
Block Based ◽  
The Fourier Transform

A feature extraction method for engine block using the empirical mode decomposition (EMD) technique has been proposed in this paper. The EMD technique is developed to break the limitations of conventional signal processing techniques in some extent and to perform further decomposition of signals. In order to extract feature information of engine block, the vibration response will first be processed by the EMD to generate the intrinsic mode functions (IMFs), and then identified by the Fourier transform. Then the same procedure will be adopted to extract the vibration response characteristic from FEM model of block, which is compared between the original and improved engine block. To verify the feasibility of such an approach, the vibration response generated by the finite element simulation will be analyzed, with results compared with the experimental ones. The results demonstrated that the EMD technique made the vibration characteristic more visible by the sifting process, and using the IMFs computed from vibration response, rather than based on the original data, the vibration sources of engine can be successfully identified. And we can also further confirm the structural weak regions of engine block and the main vibration sources, which are benefited to the engine block optimization.

scholarly journals Analysis of torsional vibration effect on the diesel engine block vibration

2020 ◽  
Vol 21 (5) ◽  
pp. 522
Author(s):  
Shiwei Ni ◽  
Yibin Guo ◽  
Binglin Lv ◽  
Donghua Wang ◽  
Wanyou Li ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Diesel Engine ◽  
Torsional Vibration ◽  
Coupling Effect ◽  
Fem Simulation ◽  
Vibration Response ◽  
Engine Block ◽  
Torsional Vibrations ◽  
Low Speed ◽  
Vibration Effect

In this paper, the coupling effect between the crankshaft torsional vibration and the low speed diesel engine block vibration is investigated. Using finite element method (FEM), a model of low speed diesel engine is established to study the vibration response. The mode results of FEM agree very well with the test. The additional torques acting on the low-speed diesel engine caused by torsional vibration are discussed in detail. The vibration response of the low-speed diesel engine considering the effect of torsional vibration is studied using FEM simulation. By analyzing the effect of torsional vibration, the results demonstrate that the crankshaft torsional vibrations have important effects on the engine block vibration. The results from this study can provide useful theoretical guidance to predict vibration of low-speed diesel engine.

302 Noise Radiation Properties of the Engine Block

2007 ◽  
Vol 2007 (0) ◽  
pp. _302-1_-_302-6_
Author(s):  
Kazuhide Ohta ◽  
Yong-Su Kim
Keyword(s):  
Engine Block ◽  
Noise Radiation ◽  
Radiation Properties

Engine Block Dynamic Response via Combustion Noise Radiation

2015 ◽  
Author(s):  
Giancarlo Chiatti ◽  
Ornella Chiavola ◽  
Silvia Conforto ◽  
Manfredi Amalfi
Keyword(s):  
Dynamic Response ◽  
Combustion Noise ◽  
Engine Block ◽  
Noise Radiation ◽  
Block Dynamic
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