CN218454783U

CN218454783U - Engine for motorcycle

Info

Publication number: CN218454783U
Application number: CN202222681177.5U
Authority: CN
Inventors: 徐庆辉
Original assignee: Taizhou Hongteng Power Technology Co ltd
Current assignee: Taizhou Hongteng Power Technology Co ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2023-02-07
Anticipated expiration: 2032-10-08

Abstract

The utility model relates to an engine for motorcycle, including cylinder head, cylinder block and the crankcase that is located the cylinder block below, the cylinder head be fixed in the upper end of cylinder block, the outer wall of cylinder block on be fixed with a plurality of first fin and a plurality of second fin, it is a plurality of first fin parallel arrangement just arranges along the length direction of cylinder block, a plurality of the perpendicular fixed connection of second fin and first fin, the lateral wall of cylinder head on seted up the arc recess, the arc recess correspond with the second fin, the lateral wall of cylinder head on the arc windward plate of two relative settings of fixedly connected with, the opening that the arc windward plate is close to the one end of second fin reduces, reaches the effect that promotes the thermal diffusivity.

Description

Engine for motorcycle

Technical Field

The utility model relates to a motorcycle engine, in particular to engine for motorcycle.

Background

In modern cities, the motorcycle is used as a convenient and light mass vehicle, and the production technology is mature.

At present, chinese patent No. CN202250553U discloses a motorcycle engine, which comprises a cylinder body, a combustion chamber, an air inlet and an air outlet which are communicated with the combustion chamber are arranged in the middle of the cylinder body, a spark plug is arranged in the combustion chamber, the combustion chamber is provided with a central axis, and the spark plug is close to the central axis of the combustion chamber.

The motorcycle engine has a simple structure, but in operation, the combustion chamber is heated rapidly by the heat generated by gasoline explosion in the combustion chamber and the heat generated by piston motion friction, the combustion chamber of the engine has no matched heat dissipation performance, and the temperature in the combustion chamber is rapidly transmitted to the crankcase, so that the aging of components in the crankcase is accelerated.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an engine for motorcycle reaches the effect that promotes the thermal diffusivity.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: an engine for a motorcycle comprises a cylinder head, a cylinder body and a crankcase positioned below the cylinder body, wherein the cylinder head is fixed at the upper end of the cylinder body, a plurality of first cooling fins and a plurality of second cooling fins are fixed on the outer wall of the cylinder body, the first cooling fins are arranged in parallel and are distributed along the length direction of the cylinder body, the second cooling fins are vertically and fixedly connected with the first cooling fins, an arc-shaped groove is formed in the side wall of the cylinder head, the arc-shaped groove corresponds to the second cooling fins, two oppositely arranged arc-shaped windward plates are fixedly connected to the side wall of the cylinder head, and openings of one ends, close to the second cooling fins, of the arc-shaped windward plates are reduced.

When the motorcycle runs, air passes between the two arc windward plates, the air flow rate is accelerated, high-speed air is guided to the second cooling fin, and the second cooling fin can increase the heat dissipation performance of the cylinder body and the first cooling fin; the air quantity guided to the second radiating fin is further increased through the arrangement of the arc-shaped groove, so that the radiating performance of the second radiating fin is further improved; the first cooling fin can further improve the heat dissipation performance of the cylinder block so as to slow down the aging of engine components.

As an optimized proposal of the utility model, the one end of the crankcase far away from the cylinder block is provided with a cooling component which is positioned on the outer wall of the crankcase.

Realize above-mentioned technical scheme, cooling module promotes the thermal diffusivity of crankcase.

As the utility model discloses a preferred scheme, the cooling module include copper pipe, heat conduction silicone grease layer and third fin, the copper pipe be the annular setting and be fixed in on the outer wall of crankcase, heat conduction silicone grease layer be located between copper pipe and the crankcase, the third fin be fixed in one side that the crankcase was kept away from to the copper pipe.

According to the technical scheme, the copper pipe has good heat dissipation performance, so that the heat dissipation performance of the crankcase is improved, and the heat conduction silicone grease layer has good heat conductivity, so that the speed of heat of the crankcase introduced into the copper pipe is further improved, and the heat dissipation performance is further improved; the third radiating fin further improves the heat dissipation of the copper pipe.

As a preferred scheme of the utility model, cooling module still include rotation axis and paddle, the outer wall of crankcase on fixedly connected with supporting seat, the rotation axis rotate connect on the supporting seat and stretch into in the copper pipe, the paddle be fixed in on the outer wall of rotation axis.

Realize above-mentioned technical scheme, the rotation axis rotates, and the paddle is along with rotatory rotation axis synchronous rotation so that the coolant liquid circulation in the copper pipe, is difficult for making the crankcase local overheat.

As a preferred embodiment of the present invention, the side wall of the crankcase is fixed with a fourth heat dissipation plate.

Realize above-mentioned technical scheme, further promote the thermal diffusivity of crankcase.

As a preferred embodiment of the present invention, the cross section of the fourth heat dissipation fin near one end of the cylinder body is streamlined.

By the technical scheme, air can conveniently penetrate through the fourth radiating fin, so that the radiating rate is improved.

As an optimized proposal of the utility model, the side walls of the fourth heat dissipation sheet and the crankcase are provided with arc-shaped transition.

Realize above-mentioned technical scheme, promote the structural strength of fourth heat dissipation piece.

To sum up, the utility model discloses following beneficial effect has:

1. when the motorcycle runs, air passes between the two arc windward plates, the air flow rate is accelerated, high-speed air is guided to the second cooling fin, and the second cooling fin can increase the heat dissipation performance of the cylinder body and the first cooling fin; the air quantity guided to the second radiating fin is further increased through the arrangement of the arc-shaped groove, so that the radiating performance of the second radiating fin is further improved; the first radiating fins can further improve the heat dissipation performance of the cylinder body so as to slow down the aging of engine components;

2. through setting up fourth fin and cooling module, promote the thermal diffusivity of crankcase to further slow down engine parts and age.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

Fig. 2 is a schematic structural view showing a cooling module.

Fig. 3 is a schematic view showing a connection structure of the rotating shaft and the blade.

The corresponding part names indicated by the numbers and letters in the drawings:

1. a cylinder head; 2. a cylinder block; 20. a crankcase; 21. an arc-shaped groove; 22. an arc windward plate; 23. a first heat sink; 24. a second heat sink; 3. a cooling assembly; 31. a copper pipe; 32. a thermally conductive silicone layer; 33. a third heat sink; 4. a supporting base; 41. a rotating shaft; 42. a paddle; 5. a fourth heat dissipation sheet; 6. and (4) arc transition.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

As shown, an engine for a motorcycle includes a cylinder head 1, a cylinder block 2, and a crankcase 20 located below the cylinder block 2. Wherein, the cylinder head 1 is fixed in the upper end of cylinder block 2, has seted up arc recess 21 on the lateral wall of cylinder head 1, and arc recess 21 extends towards the direction of cylinder block 2. Two arc windward plates 22 which are oppositely arranged are fixedly connected to the side wall of the cylinder head 1.

A plurality of first fins 23 and a plurality of second fins 24 are fixed to the outer wall of the cylinder block 2. Wherein, a plurality of first fins 23 are arranged in parallel and arranged along the length direction of the cylinder block 2, and the first fins 23 surround the outer wall of the cylinder block 2. The plurality of second heat radiating fins 24 are vertically and fixedly connected to the uppermost first heat radiating fin 23.

The arc-shaped grooves 21 correspond to the second radiating fins 24, and the openings of the two arc-shaped windward plates 22 at the ends close to the second radiating fins 24 are reduced.

In order to improve the heat dissipation of the crankcase 20, a cooling module 3 is disposed at an end of the crankcase 20 away from the cylinder block 2, and the cooling module 3 is disposed on an outer wall of the crankcase 20. The cooling module 3 comprises a copper tube 31, a thermally conductive silicone layer 32 and a third heat sink 33. The copper tube 31 is disposed in an annular shape and fixed on an outer wall of the crankcase 20, the heat conductive silicone layer 32 is located between the copper tube 31 and the crankcase 20, and the third heat sink 33 is fixed on a side of the copper tube 31 away from the crankcase 20.

The copper pipe 31 is filled with a coolant. The cooling liquid is water. In order to drive the circulation of the cooling liquid within the copper tube 31. The utility model discloses rotation axis 41 and paddle 42 have still been set up. A supporting seat 4 is fixedly connected to the outer wall of the crankcase 20, and the rotating shaft 41 is rotatably connected to the supporting seat 4 and extends into the copper pipe 31; the paddle 42 is fixed to the outer wall of the rotating shaft 41.

The rotary shaft 41 is driven by a motor (not shown in the drawings). The motor is powered by a battery (not shown).

A fourth heat radiation fin 5 is fixed to a side wall of the crankcase 20. And the section of the fourth radiating fin 5 near one end of the cylinder block 2 is streamline.

An arc-shaped transition 6 is arranged between the fourth heat dissipation plate 5 and the side wall of the crankcase 20 to improve the structural strength of the fourth heat dissipation plate 5.

When the motorcycle is running, air passes between the two arc windward plates 22, the flow speed is accelerated, the accelerated air is guided to the second radiating fins 24, and the second radiating fins 24 can increase the heat radiation performance of the cylinder block 2 and one first radiating fin 23; the amount of air guided to the second heat sink 24 is further increased by the provision of the arc-shaped groove 21 to further enhance the heat dissipation performance of the second heat sink 24; the first fins 23 can further improve the heat radiation performance of the cylinder block 2. At the same time, the motor is turned on, the rotary shaft 41 is rotated, and the paddle 42 is rotated and circulates the coolant in the copper pipe 31. Part of heat of the crankcase 20 is guided to the copper pipe 31 through the heat conduction silicone grease layer 32, and the heat is radiated through the third radiating fin 33, so that the heat radiation performance of the crankcase 20 is improved, and the aging of engine parts is delayed.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An engine for a motorcycle comprises a cylinder head, a cylinder body and a crankcase positioned below the cylinder body, wherein the cylinder head is fixed at the upper end of the cylinder body, and is characterized in that a plurality of first cooling fins and a plurality of second cooling fins are fixed on the outer wall of the cylinder body, the first cooling fins are arranged in parallel and are distributed along the length direction of the cylinder body, the second cooling fins are vertically and fixedly connected with the first cooling fins, an arc-shaped groove is formed in the side wall of the cylinder head, the arc-shaped groove corresponds to the second cooling fins, two oppositely arranged arc-shaped windward plates are fixedly connected to the side wall of the cylinder head, the opening of one end, close to the second cooling fins, of each arc-shaped windward plate is reduced, a cooling assembly is arranged at one end, far away from the cylinder body, of the crankcase, and the cooling assembly is positioned on the outer wall of the crankcase.

2. The engine as claimed in claim 1, wherein the cooling unit includes a copper pipe, a heat conductive silicone layer and a third heat sink, the copper pipe is disposed in a ring shape and fixed to an outer wall of the crankcase, the heat conductive silicone layer is disposed between the copper pipe and the crankcase, and the third heat sink is fixed to a side of the copper pipe away from the crankcase.

3. The engine as claimed in claim 2, wherein the cooling unit further comprises a rotary shaft and a blade, the outer wall of the crankcase is fixedly connected with a support base, the rotary shaft is rotatably connected to the support base and extends into the copper tube, and the blade is fixed to the outer wall of the rotary shaft.

4. A motorcycle engine as claimed in claim 1 or 3, wherein a fourth fin is fixed to a side wall of the crankcase.

5. A motorcycle engine as claimed in claim 4, wherein the fourth fin is streamlined in cross-section at an end thereof adjacent to the cylinder block.

6. A motorcycle engine as claimed in claim 4, characterised in that an arcuate transition is provided between the fourth heat sink and the side wall of the crankcase.