Vibration damping device for internal combustion engines

Abstract

The invention relates to motor vehicle power systems and provides a vibration reduction device used for an internal combustion engine. The vibration reduction device used for the internal combustion engine aims at solving the problem that an existing vibration reduction device of the engine can not effectively restrain vibration of the engine. The vibration reduction device comprises a first sliding rail, a second sliding rail, a third sliding rail, a fourth sliding rail, a first sliding block, a second sliding block, a third sliding block, a fourth sliding block, elastic components, a first connection rod, a second connection rod, a third connection rod and a fourth connection rod, wherein the first sliding rail, the second sliding rail, the third sliding rail and the fourth sliding rail are fixed on a vehicle frame; the first sliding block, the second sliding block, the third sliding block, the fourth sliding block and the elastic components are arranged in the sliding rails respectively; the first connection rod, the second connection rod, the third connection rod and the fourth connection rod connect the sliding blocks with the engine. By the adoption of the structure, vibration of the engine in the vertical direction is converted to horizontal sliding of the sliding blocks along the sliding rails, the horizontal sliding is greatly attenuated by the elastic components on the two sides of the sliding rails, and therefore transmission of vibration of the engine to the vehicle frame and a passenger cabin is effectively restrained, and the NVH characteristic of motor vehicles is improved.

Description

technical field [0001] The invention relates to a motor vehicle power system, and specifically provides a vibration damping device for an internal combustion engine. Background technique [0002] The vibration of the internal combustion engine—especially the in-line internal combustion engine is mainly caused by the up and down reciprocating motion of the piston in the cylinder. Correspondingly, the vibration of the internal combustion engine also mainly manifests itself as shaking along the vertical direction. When this vibration is transmitted to the passenger cabin, it will greatly increase the noise and vibration that the occupants can hear, seriously affecting the NVH characteristics of the vehicle and the driving experience. [0003] The existing engine vibration damping structure mainly isolates engine vibration through damping rubber pads and the like, so that the vibration transmitted to the cabin is minimized. However, the vibration suppression effect of this iso...

AI Technical Summary

Problems solved by technology

Specifically, the present invention aims to solve the problem that existing engine vibration damping devices cannot effectively suppress engine vibration

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