PROBLEM TO BE SOLVED: To reduce vibration, and improve a fuel performance of an internal combustion engine due to a lighten-weight as well.SOLUTION: A rigid body portion of a torque rod 5 is made of an aluminum alloy and made light, so as to set a resonance frequency of rod rigidity body resonance higher than that in a vibration region and near (in proximate to ) a boundary on a low frequency side of an acceleration-time noise region. A resonance frequency fr of vibration in a rod axial direction of an inertial mass 14 is set higher than a frequency of a basic-order vibration in an idling rotation number of an engine 1, and not more than a frequency of the basic-order vibration of a normal rotation number of an engine 1.SELECTED DRAWING: Figure 2
【課題】振動低減と軽量化による内燃機関の燃費性能向上との両立を図る。【解決手段】トルクロッド5の剛体部分をアルミニウム合金製として軽量化することによって、ロッド剛体共振の共振周波数をこもり音領域よりも高く、かつ加速時騒音領域の低周波側の境界近傍(境界付近)に設定する。そして、慣性マス14のロッド軸方向に沿った振動の共振周波数frがエンジン1のアイドル回転数における基本次数の振動の周波数よりも高く、かつエンジン1の常用回転数における基本次数の振動の周波数以下となるように設定する。【選択図】図2
VIBRATION REDUCTION DEVICE
振動低減装置
2018-08-30
Patent
Electronic Resource
Japanese
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