阅读说明：本技术 一种增程式发动机的柔性飞轮总成 (Flexible flywheel assembly of extended range engine ) 是由 周孟祥 刘燚军 李必刚 黎凡 于 2020-12-29 设计创作，主要内容包括：一种增程式发动机的柔性飞轮总成,包括飞轮、驱动盘、信号盘,所述飞轮为环状结构,所述飞轮的内端面设有螺孔,所述驱动盘的端部设有通孔,所述信号盘的端部设有螺栓孔,所述螺栓孔内穿置有螺钉,所述螺钉依次穿过信号盘的螺栓孔、驱动盘上的通孔与飞轮的螺孔螺合固定,所述飞轮的内端面靠近中心处设有一凹槽,所述凹槽内放置摩擦盘。本发明结构合理,其中飞轮为环状结构,且有较大质量,以满足较大转动惯量的要求。本发明中摩擦盘具有一段稳定的工作区域,按设定的压缩量安装,使得柔性飞轮总成工作一段时间后,保持负荷不变,减振效果稳定。(The flexible flywheel assembly of the extended range engine comprises a flywheel, a driving disc and a signal disc, wherein the flywheel is of an annular structure, screw holes are formed in the inner end face of the flywheel, through holes are formed in the end portion of the driving disc, bolt holes are formed in the end portion of the signal disc, screws penetrate through the bolt holes and are fixed with the screw holes of the flywheel in a screwing mode through the bolt holes of the signal disc and the through holes in the driving disc in sequence, a groove is formed in the position, close to the center, of the inner end face of the flywheel, and a friction disc is placed in the groove. The flywheel has a reasonable structure, wherein the flywheel has an annular structure and has larger mass so as to meet the requirement of larger rotational inertia. The friction disc has a stable working area and is installed according to the set compression amount, so that after the flexible flywheel assembly works for a period of time, the load is kept unchanged, and the damping effect is stable.)

1. The flexible flywheel assembly of the extended range engine comprises a flywheel, a driving disc and a signal disc and is characterized in that the flywheel is of an annular structure, screw holes are formed in the inner end face of the flywheel, through holes are formed in the end portion of the driving disc, bolt holes are formed in the end portion of the signal disc, screws penetrate through the bolt holes, the screws sequentially penetrate through the bolt holes in the signal disc and the through holes in the driving disc to be screwed and fixed with the screw holes in the flywheel, a groove is formed in the position, close to the center, of the inner end face of the flywheel, and a friction disc is placed in the groove.

2. The flexible flywheel assembly of an extended range engine of claim 1 wherein the center of the drive plate is riveted with a spacer.

3. The flexible flywheel assembly of an extended range engine of claim 1, wherein the friction disk is disposed between the flywheel and the drive plate.

4. The compliant flywheel assembly of claim 1 or 3 wherein the outer circumference of the friction disk abuts the bottom of the recess and the inner circumference of the friction disk is supported on the end face of the annular boss on the inner circumference of the drive plate.

5. The flexible flywheel assembly of an extended range engine as claimed in claim 1, wherein the outer end face of the flywheel is provided with a clutch positioning hole, and a clutch positioning pin penetrates through the clutch positioning hole.

Technical Field

The invention relates to the technical field of range-extending engine parts, in particular to a flexible flywheel assembly of a range-extending engine.

Background

The extended range engine is driven by the electric motor after the engine is used for driving the generator to charge the battery. In other words, it is a power assembly combined by gasoline engine and electric machine: the fuel engine is responsible for generating electricity, and then replaces the traditional gearbox by a motor, a battery pack, an inverter and the like to drive the vehicle. When the energy of the battery of the motor is sufficient, the pure electric mode is adopted for driving, and when the energy of the battery is insufficient, the engine is started to drive the generator to charge the battery, so that the motor can continue to operate. The engine does not directly drive the wheels and therefore does not require a gearbox.

The range extending engine can solve the problem of mileage anxiety of the electric vehicle, and in addition, the range extending engine can be continuously in the optimal working condition compared with a traditional internal combustion engine, so that more energy is saved. The range-extending engine is suitable for a range-extending new energy automobile. However, the flexible flywheel applied to the extended range engine has the problems of overlarge vibration, unstable operation and the like during operation, and particularly has the problem of vibration reduction effect caused by the change of load after working for a period of time.

Disclosure of Invention

The present invention is directed to a flexible flywheel assembly of an extended range engine to solve the above problems.

The technical scheme adopted by the invention is as follows: the flexible flywheel assembly of the extended range engine comprises a flywheel, a driving disc and a signal disc, wherein the flywheel is of an annular structure, screw holes are formed in the inner end face of the flywheel, through holes are formed in the end portion of the driving disc, bolt holes are formed in the end portion of the signal disc, screws penetrate through the bolt holes and are fixed with the screw holes of the flywheel in a screwing mode through the bolt holes of the signal disc and the through holes in the driving disc in sequence, a groove is formed in the position, close to the center, of the inner end face of the flywheel, and a friction disc is placed in the groove.

Preferably, a spacer is riveted to the center of the drive plate.

Preferably, the friction disc is disposed between the flywheel and the drive disc.

Preferably, the outer circumference of said friction disc abuts the bottom of the recess and the inner circumference of said friction disc is supported on the end face of the annular boss of the inner circumference of the drive disc.

Preferably, a clutch positioning hole is formed in the outer end face of the flywheel, and a clutch positioning pin penetrates through the clutch positioning hole.

The flywheel has a compact and reasonable structure, wherein the flywheel is of an annular structure, the axial installation space is small, and the requirement of larger rotational inertia can be met. The load curve of the friction disc has a stable area, when the compression amount of the friction disc (the height of the abscissa in the graph is the compression amount) is 2-4mm, the load keeps 1163N and the damping effect is very stable.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a schematic illustration of the friction disk of the present invention;

FIG. 4 is a load graph of a friction disk of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-3, the flexible flywheel assembly of the extended range engine includes a flywheel 1, a driving disk 2, and a signal disk 3, where the flywheel 1 has an annular structure and has a large mass to meet the requirement of large rotational inertia. The outer end face of the flywheel 1 is provided with a pin hole 91, a positioning pin 9 penetrates through the pin hole, and the outer end face of the flywheel 1 is connected with the clutch in a positioning mode through the positioning pin 9. A groove 5 is formed in the position, close to the center, of the inner end face of the flywheel 1, and an installation space of the friction disc is formed between the flywheel and the driving disc. The friction disc 7 is placed in the groove 5, a screw hole 11 is formed in the inner end face of the flywheel 1, a through hole 13 is formed in the end portion of the driving disc 2, a bolt hole 12 is formed in the end portion of the signal disc 3, a screw 6 penetrates through the bolt hole 12 of the signal disc and the through hole 13 in the driving disc in sequence, and the screw 6 is screwed and fixed with the screw hole 11 of the flywheel. A spacer 8 is riveted to the center of the drive plate 2.

The friction disc 7 is arranged between the flywheel 1 and the driving disc 2 so as to enhance the damping effect of the flywheel assembly. Specifically, the outer circumference of the friction disk 7 abuts against the bottom of the groove 5, and the inner circumference of the friction disk 7 is supported on the end face of the annular boss of the inner circumference of the drive disk 2. The load curve of the friction disk of the invention has a stable region, as shown in fig. 4, when the compression amount of the friction disk (the abscissa ' height ' in the graph is the compression amount ') is 2-4mm, the load keeps 1163N and the damping effect is stable. After a period of working, even if the installation groove part on the friction disc or the flywheel is abraded (the abrasion amount does not exceed the stable area), the compression amount of the friction disc is reduced, and the friction disc can still keep the load unchanged.

The front end flexible disk of the flywheel 1 is fixedly connected to the engine crankshaft 21 by screws, and the rear end of the flywheel 1 is connected to the generator input shaft 20 through the clutch damping disk 200 to output power.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.