Low-noise automobile timing driving belt

Abstract

The invention relates to a timing belt, in particular to a low-noise automobile timing driving belt. The low-noise automobile timing driving belt comprises an annular belt body, wherein the belt body is formed by binding a belt back and a meshed part, the meshed part is provided with a plurality of tooth parts which are spaced along the inner circumferential surface of the belt body, a core rope skeleton is embedded inside the meshed part along the circumferential direction of the belt body, an interlayer fabric is arranged between the belt back and the meshed part, and the inner circumferential surface of the meshed part is provided with a tooth-shaped fabric layer covering the tooth parts. Through the measurement, when the low-noise automobile timing driving belt is applied to a 1.8L top-mounted double-cam engine, the resonance phenomenon is eliminated, the noise is remarkably lowered, and the noise is hardly heard when a timing system protection shield is covered.

Description

technical field [0001] The invention relates to a timing belt, in particular to a low-noise automobile timing transmission belt. Background technique [0002] With the continuous development of the automobile industry, people have higher and higher requirements for the driving comfort of automobiles, especially for the vibration and noise of the engine. The car engine is the heart of the car, and the timing system is an important part of the engine's valve train, and one of the important factors to ensure the smooth breathing of the engine. The timing system accurately realizes the timing opening and closing of the corresponding intake valve and exhaust valve by controlling the opening and closing time of the valve, so that sufficient fresh air can enter the cylinder in time, and the exhaust gas can be discharged from the cylinder in time, thus ensuring the engine to have normal, Good power output performance. The transmission parts of the timing system are divided into tw...

AI Technical Summary

Problems solved by technology

[0004] Defects of the current automobile timing drive train: Take a 1.8L, double-cam engine timing drive train diagram of a domestic OEM as an example, the specific structure is as follows figure 1 shown

[0008] When the engine is working at a certain speed, when the meshing frequency or the excitation frequency of the engine is the same as or close to the natural frequency of the timing belt section, the vibration amplitude of the belt section will increase significantly, forming a resonance phenomenon, and the vibration will intensify. Increased noise, reduced driving comfort, and even damage to the engine

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