The effect of rubber dampers on engine’s NVH and thermal performance

Numerical Methodology for Optimization of Compression-Ignited Engines Considering Combustion Noise Control

“…For this reason, most of acoustics related studies till date have focused on performing basic and straightforward analyses which are based on qualitative comparisons of the acoustic field [57] or traditional acoustic metrics [58]. Only a few of them attempted to link the frequency content with the spatial energy distribution [23] or the time evolution [59], in an effort to understand the propagation and dissipation patterns.…”

“…NVH analysis has demonstrated the complexity of the propagation patterns of acoustic energy [16]. Moreover, it allowed to establish a relation among acoustic response of the engine, block design and acoustic insulation [17].…”

Vibrational damping behaviors of graphene nanoplatelets reinforced NR/EPDM nanocomposites

“…Other compounding ingredients such as sulphur, zinc oxide, and stearic acid were purchased from System/Classic Chemical Sdn Bhd; tetramethyl thiuram disulfide (Perkacit-TMTD) and 2,20-dithiobis(benzothiazole) (Perkacit-MBTS) was acquired from Perkacit; N-(1,3-dimethylbutyl)-N'-phenyl-pphenylenediamine (6PPD) were supplied by Flexsys America (United States). Commercialized graphene nanoplatelets, GNPs KNG-150 was supplied by Xiamen Graphene Technology Co. Ltd, China with true density of ~2.25 g/cm 3 and carbon content of > 99.5 wt%. The designation of samples for this study is tabulated in Table 2.…”

“…It has become one of the most important elastomeric material for energy absorption and most importantly, is a key component of many load-bearing structures and vibration-isolation mountings. To date, there are widespread use of rubber components for noise and vibration isolation in aerospace and automotive industries [2][3]. This is agreed by Geisberger et al [4] which stated the significant role of rubber compound in developing novel materials for reducing undesirable noise and preventing vibration fatigue failure.…”

Computational assessment of combustion noise of automotive compression-ignited engines

“…A larger number of works are also focused on applied solutions [87,97,98] rather than analysing the acoustic path purely. While Mao et al [87] optimized the engine block design using a finite-element model to improve the acoustic signature of a Diesel engine, other authors such us Duvigneau et al [98] resorted to CFD and simplified acoustic models to reach an improved design.…”