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Low-noise automobile timing driving belt

A transmission belt, low-noise technology, applied in the direction of transmission belts, belts/chains/gears, mechanical equipment, etc., can solve the problems of increased noise, damage to the engine, increased vibration, etc., to eliminate howling, reduce noise, and eliminate resonance Effect

Inactive Publication Date: 2013-08-28
NINGBO FENGMAO FAR EAST RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Low-noise automobile timing driving belt
  • Low-noise automobile timing driving belt
  • Low-noise automobile timing driving belt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as Figure 4 The shown low-noise automobile timing drive belt includes an endless belt body 5, the belt body is formed by bonding the belt back 1 and the meshing part 2, and a plurality of teeth are formed on the meshing part at intervals along the inner peripheral surface of the belt body Part 3, the inside of the meshing part is embedded with a core rope skeleton 4 along the circumference of the belt body, and a sandwich fabric 7 is arranged between the belt back and the meshing part, and the inner peripheral surface of the meshing part is set to cover the tooth part The toothed fabric layer 6; the interlayer fabric is wavy in the belt body. The profile of the teeth is arc teeth, and the top of each tooth is provided with a groove 8 .

[0048] The materials and preparation process of the above-mentioned structures are as follows:

[0049] 1. Molding material with back:

[0050] The belt back is prepared by mixing the following components in parts by weight: hy...

Embodiment 2

[0065] A low-noise automobile timing drive belt, the specific structure and preparation method are the same as in Example 1, except that:

[0066] Wherein, the preparation of the impregnating mortar: the mixing rubber and acetone are mixed to obtain the impregnating mortar, wherein the mass ratio of the mixing rubber and acetone is 1:6. The rubber compound is prepared by mixing the following components in parts by weight: hydrogenated nitrile rubber 2020L: 100; zinc oxide: 6; stearic acid: 2; phenolic adhesive resin: 6; carbon black N330: 55; Agent TP-95: 5; white carbon black: 12; crosslinking agent DCP: 5; co-crosslinking agent TAIC: 2.

Embodiment 3

[0068] A low-noise automobile timing drive belt, the specific structure and preparation method are the same as in Example 1, the difference is that the belt back is prepared by mixing the following components in parts by weight: hydrogenated nitrile rubber 2020L:100; aramid fiber Short fiber: 8; zinc oxide: 8; stearic acid: 2; carbon black N330: 65; softener TP-95: 6; white carbon black: 12; crosslinking agent DCP: 4; sulfur: 0.8.

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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...

Claims

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Application Information

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IPC IPC(8): F16G1/00
Inventor 马工
Owner NINGBO FENGMAO FAR EAST RUBBER
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