A left engine suspension assembly

Abstract

The invention discloses a left suspension assembly of an engine, which includes a left suspension and a left suspension bracket. The left suspension includes a vehicle body connection frame, a support arm and a rubber bush. One rubber and the second rubber, the first rubber includes a ring part and a "eight"-shaped part, and the inner wall of the rubber part facing the upper left and upper right of the metal core on the second rubber is in a zigzag shape; the body connecting frame includes a left suspension The upper bracket, the left suspension lower bracket and the left suspension limiting plate are all sheet metal parts, and the left suspension bracket is a casting, including three suspension installation columns and three transmission installation columns. It can avoid the inflection point of the suspension static stiffness curve when the transmission vibration is too large; avoid the second-order and fourth-order excitation of the engine, so as to avoid resonance during use, so as to meet the modal requirements of the left suspension bracket and the engine and vehicle The carrying boundary requirements; the body connecting frame is a welded assembly frame of sheet metal parts, and integrates the air filter installation function.

Description

Technical field [0001] The invention relates to an automobile engine suspension structure, in particular to a left engine suspension assembly. Background technique [0002] The existing left engine suspension assembly includes a left suspension and a left suspension bracket. The left suspension usually includes a body connection frame, a support arm for connecting with the left suspension bracket, and a rubber bushing connected between the body connection frame and the support arm, and the rubber bush plays a role of shock absorption. The rubber bushing includes an annular shell and a metal core. The metal core is centrally arranged in the annular shell and is vulcanized and fixed with the annular shell through a first rubber. A second rubber is vulcanized and fixed on the inner wall of the annular shell. Due to the unreasonable structural design of the rubber bushing, the static stiffness curve of the suspension is prone to inflection points, the NVH performance of the vehicle ...

AI Technical Summary

Problems solved by technology

Due to the unreasonable structural design of the rubber bushing, the static stiffness curve of the suspension is prone to inflection points, the NVH performance of the vehicle is poor, and the shock absorption effect is not good

[0003] The left suspension bracket is usually welded by stamping and forming sheet metal parts. The stamping and forming sheet metal parts have the advantage of light weight, but welding is troublesome and the accuracy is not guaranteed; the boundary conditions of the engine and the vehicle cannot be met during installation. The mode of the left suspension bracket is low, and it is impossible to avoid the second-order and fourth-order excitation of the engine, resulting in resonance and affecting NVH performance

Images