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A kind of engine and its belt tensioner

A tensioner and engine technology, applied in the field of auto parts, can solve the problem of high fuel consumption

Active Publication Date: 2021-12-07
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the tensioner only has one spring, in order to meet the high tension force required by the engine at low speed (700-2000rpm), it is usually provided with a spring that can provide a large tension force. High (2000rpm ~ 7000rpm), when the required tension force is small, the tensioner still has a large tension force, resulting in high fuel consumption of the engine at high speed

Method used

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  • A kind of engine and its belt tensioner
  • A kind of engine and its belt tensioner
  • A kind of engine and its belt tensioner

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Embodiment Construction

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] Please refer to the attached Figure 1-8 ,in, figure 1 An assembly drawing of the accessory tensioner provided in a specific embodiment for the present invention; figure 2 for figure 1 explosion map; image 3 for figure 1 Schematic diagram of the middle tension arm assembly; Figure 4 for image 3 Schematic diagram of the structure of the tension arm assembly in which two springs are installed;

[0035] Figure 5 for image 3 Schematic diagram of the middle tension arm; Figure 6 for image 3 Schematic diagram of the middle damping block;

[0036] Figure 7 for figure 2 Schematic diagram of the structure of the middle base; Figure 8 for Figure 7 top view.

[0037] In a specific embodiment, the pr...

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Abstract

The invention discloses an engine and its belt tensioner. The belt tensioner includes a tension arm assembly and a base, and the tension arm assembly can rotate relative to the base, and at least two springs, each of which is One end in the axial direction is fixed to the base, and the other end is used to cooperate with the tension arm assembly; when the tension arm assembly is in a small swing angle condition, at least one of the springs and the tension arm assembly Cooperate, when the tension arm assembly is in a large swing angle working condition, the number of the springs that cooperate with the tension arm assembly is increased to at least two. The belt tensioner can satisfy the tension force required by the engine under high and low speed conditions. The required tension force is the same or similar, so that the fuel consumption can be reduced when the engine is in a high-speed working condition and the tension arm assembly is in a small swing angle working condition.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to an engine and a belt tensioner thereof. Background technique [0002] The automotive engine accessory wheel system generally includes belts, crankshaft pulleys, engine pulleys, water pump pulleys, oil pump pulleys, compressor pulleys, and idler pulleys. The belt is prone to relaxation due to elongation after working for a period of time. , Due to factors such as the thermal expansion coefficient of the engine body and the belt are different, the original size of the belt will also be changed, resulting in a decrease in the tension of the belt and severe jitter, and the work performance will decline accordingly. Therefore, in order to ensure that the belt can reliably transmit motion, prevent the belt from slipping during operation, compensate for the elongation of the belt due to aging, wear, etc., and reduce the vibration of the belt under various conditions, tensioning is wi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H7/08
CPCF16H7/08F16H2007/081
Inventor 邢东仕丁凯李岩贺融冰侯明阳江旭光
Owner SAIC MOTOR
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