阅读说明：本技术 一种汽车交流发电机超越皮带轮系统 (Overrunning belt pulley system of automobile alternating-current generator ) 是由 宋喜岗 马文峰 王洪超 姜意驰 张宝国 于 2019-09-16 设计创作，主要内容包括：一种汽车交流发电机超越皮带轮系统,包括发动机曲轴皮带轮、空调压缩机皮带轮、超越皮带轮、张紧轮、惰轮、水泵皮带轮和皮带；皮带的内侧绕过发动机曲轴皮带轮、空调压缩机皮带轮、超越皮带轮和水泵皮带轮,皮带的外侧绕过张紧轮将皮带张紧,惰轮与皮带的外侧接触,惰轮能控制皮带在水泵皮带轮和发电机皮带轮上的接触面积。本发明采用超越皮带轮将皮带轮系统与发电机隔离,发电机受到的驱动更加平稳,转速波动能够被超越皮带轮隔离,能够降低发动机在启动、熄火、换挡、停车过程中的共振,达到隔离发动机轮系与发电机的目的,可避免皮带轮系统工作时噪音振动的问题。(An overrunning belt pulley system of an automobile alternating-current generator comprises an engine crankshaft belt pulley, an air conditioner compressor belt pulley, an overrunning belt pulley, a tension pulley, an idler pulley, a water pump belt pulley and a belt; the inner side of the belt bypasses a crankshaft belt pulley of the engine, a belt pulley of the air conditioner compressor, a overrunning belt pulley and a water pump belt pulley, the outer side of the belt bypasses a tension pulley to tension the belt, an idler pulley is in contact with the outer side of the belt, and the idler pulley can control the contact area of the belt on the water pump belt pulley and the generator belt pulley. The overrunning belt pulley is adopted to isolate the belt pulley system from the generator, the generator is driven more stably, the fluctuation of the rotating speed can be isolated by the overrunning belt pulley, the resonance of the engine in the processes of starting, flameout, gear shifting and stopping can be reduced, the aim of isolating the engine wheel train from the generator is fulfilled, and the problem of noise vibration during the working of the belt pulley system can be avoided.)

1. An automotive alternator overrunning pulley system, comprising: comprises an engine crankshaft belt pulley (1), an air conditioner compressor belt pulley (2), an overrunning belt pulley (3), a tension pulley (4), an idler pulley (5), a water pump belt pulley (6) and a belt (7); the inner side of the belt (7) bypasses a crankshaft belt pulley (1) of the engine, a belt pulley (2) of the air-conditioning compressor, an overrunning belt pulley (3) and a water pump belt pulley (6), the outer side of the belt (7) bypasses a tension pulley (4) to tension the belt (7), an idler pulley (5) is in contact with the outer side of the belt (7), and the idler pulley (5) can control the contact area of the belt (7) on the water pump belt pulley (6) and a generator belt pulley (3).

Technical Field

The invention relates to the technical field of automobile parts, in particular to an overrunning belt pulley system of an automobile alternating-current generator.

Background

The automobile alternating current generator is a large-rotational-inertia component in an engine gear train, impact can be caused to the gear train when the rotational speed fluctuates in the normal operation process of an engine and the rotational speed changes under emergency working conditions, so that torque fluctuation and tension fluctuation are caused, particularly, the national environmental protection requirements are increasingly improved, higher requirements are provided for emission, noise and the like of the whole automobile, when the traditional engine uses a supercharging device, a starting-stopping system and an electric power steering system, the gear train is about to bear more vibration impact, the swinging displacement of a tensioning wheel is increased inevitably, the vibration and the noise of a belt pulley system are increased, the service life of a belt is shortened, and the comfort of drivers and passengers is influenced. If the belt wheel system and the generator cannot perform one-way overrunning, the generator can resonate with the belt wheel system in the starting or strong deceleration process of the engine to cause energy loss, so that the oil consumption is increased.

Disclosure of Invention

The invention aims to solve the defects in the background technology and provide an overrunning belt pulley system of an automobile alternating-current generator, wherein the overrunning belt pulley is adopted by the belt pulley system to isolate the belt pulley system from the generator, the generator is driven more stably, the fluctuation of the rotating speed can be isolated by the overrunning belt pulley, the resonance of the engine in the processes of starting, flameout, gear shifting and stopping can be reduced, the purpose of isolating an engine wheel train from the generator is achieved, and the problem of noise vibration during the working of the belt pulley system can be avoided.

An overrunning belt pulley system of an automobile alternating-current generator comprises an engine crankshaft belt pulley, an air conditioner compressor belt pulley, an overrunning belt pulley, a tension pulley, an idler pulley, a water pump belt pulley and a belt; the inner side of the belt bypasses a crankshaft belt pulley of the engine, a belt pulley of the air conditioner compressor, a overrunning belt pulley and a water pump belt pulley, the outer side of the belt bypasses a tension pulley to tension the belt, an idler pulley is in contact with the outer side of the belt, and the idler pulley can control the contact area of the belt on the water pump belt pulley and the generator belt pulley.

The belt connects the engine crankshaft belt pulley, the air conditioner compressor belt pulley, the overrunning belt pulley, the tension pulley, the idler pulley and the water pump belt pulley into a whole.

The working principle of the invention is as follows:

when the engine crankshaft belt pulley rotates (clockwise), the rotating mechanical energy transmits the rotating torque to the water pump belt pulley, the overrunning belt pulley and the air conditioner compressor belt pulley through the belt, the tension pulley ensures that the tension of the belt is within a set range in the transmitting process of the rotating torque, and the idler pulley ensures that the contact area of the belt on the water pump belt pulley and the generator belt pulley is within a design range.

When engine crankshaft pulley operates under the normal condition, the fluctuation of rotational speed appears, and the belt is followed and is appeared undulantly this moment, and when whole train produced the rotational speed and is undulanted, the vibration of belt increased, and the slippage rate increases, and the life-span reduces. However, the overrunning belt pulley is adopted, the generator with the largest rotational inertia in the belt pulley system is isolated in the system, the generator can be normally driven by the belt under the system, but the rotation speed fluctuation can be isolated by the one-way structure in the overrunning belt pulley, so that the vibration amplitude of the belt is reduced, the belt is protected, and the service life and the comfort of the whole belt pulley system are further improved.

The automobile alternating-current generator is isolated from a belt pulley system through an overrunning belt pulley, the engine transfers torque to a belt through a front end flywheel, and the belt drives components in a wheel train to rotate. During normal operation, the belt transmits rotatory moment of torsion to the one-way device who surmounts in the belt pulley, and the one-way device transmits the moment of torsion for the generator and generates electricity, when the engine in the starting process, when the engine slows down by force: including but not limited to engine stall, midway shift gears, when parking operating mode such as, surmount the belt pulley and can reduce the resonance of belt pulley system and generator, reduce energy consumption and noise, surmount the belt pulley and can reduce belt tension under the developments, the take-up pulley swing displacement of belt pulley system reduces, and the belt life-span increases.

The invention has the beneficial effects that:

the overrunning belt pulley is adopted to isolate the belt pulley system from the generator, the generator is driven more stably, the fluctuation of the rotating speed can be isolated by the overrunning belt pulley, the resonance of the engine in the processes of starting, flameout, gear shifting and stopping can be reduced, the aim of isolating the engine wheel train from the generator is fulfilled, and the problem of noise vibration during the working of the belt pulley system can be avoided.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a front view of the present invention.

Detailed Description

Referring to fig. 1 and 2, an overrunning belt pulley system of an automotive alternator includes an engine crankshaft belt pulley 1, an air conditioner compressor belt pulley 2, an overrunning belt pulley 3, a tension pulley 4, an idler pulley 5, a water pump belt pulley 6 and a belt 7; the inner side of the belt 7 bypasses the engine crankshaft pulley 1, the air conditioner compressor pulley 2, the overrunning pulley 3 and the water pump pulley 6, the outer side of the belt 7 bypasses the tension pulley 4 to tension the belt 7, the idler pulley 5 is in contact with the outer side of the belt 7, and the idler pulley 5 can control the contact area of the belt 7 on the water pump pulley 6 and the generator pulley 3.

The belt 7 connects the engine crankshaft pulley 1, the air conditioner compressor pulley 2, the overrunning pulley 3, the tension pulley 4, the idler pulley 5 and the water pump pulley 6 into a whole.

The working principle of the invention is as follows:

when the engine crankshaft pulley 1 rotates (clockwise), the rotating mechanical energy transmits the rotating torque to the water pump pulley 6, the overrunning pulley 3 and the air conditioner compressor pulley 2 through the belt 7, the tension pulley 4 ensures that the tension of the belt 7 is in a set range in the transmitting process of the rotating torque, and the idler pulley 5 ensures that the contact area of the belt 7 on the water pump pulley 6 and the generator pulley 3 is in a design range.

When engine crankshaft pulley 1 operates under the normal condition, the fluctuation of rotational speed appears, and belt 7 is followed and appears undulantly this moment, and when whole train produced the rotational speed and fluctuated, the vibration of belt 7 increased, and the slippage rate increases, and the life-span reduces. However, the overrunning belt pulley 3 is adopted in the invention, the generator with the largest rotational inertia in the belt pulley system is isolated in the system, under the system, the generator can receive the normal drive of the belt 7, but the rotational speed fluctuation can be isolated by the unidirectional structure in the overrunning belt pulley 3, namely when the belt speed is greater than the rotational speed of the generator, the generator receives the drive of the engine through the overrunning belt pulley, when the rotational speed fluctuation or the rapid deceleration of the engine exists (the rotational speed of the generator is higher than the belt speed), the overrunning belt pulley functions, and the generator does not reversely drive the engine through the belt 7, so that the vibration amplitude of the belt 7 is reduced, the belt 7 is protected, and the service life and the comfort of the whole belt pulley system are further.

The automobile alternator in fig. 1 is isolated from the pulley system by the overrunning pulley 3, the engine transfers torque to the belt 7 by the front end flywheel, and the belt 7 drives components in the gear train to rotate. During normal operation, belt 7 will rotate the torque transfer and surmount the one-way structure in the belt pulley 3, and the one-way structure is transmitted the generator and is generated electricity, when the engine in the starting process, when the engine speed reduction by force: including but not limited to engine stall, shift gears midway, when parking operating mode such as operating mode, surmount belt pulley 3 and can reduce the resonance of belt pulley system and generator, reduce energy consumption and noise, surmount belt pulley 3 and can reduce the belt tension under the developments, the take-up pulley 4 swing displacement of belt pulley system reduces, and 7 life-spans of belt increase.