CN211397733U

CN211397733U - Engine

Info

Publication number: CN211397733U
Application number: CN201922182279.0U
Authority: CN
Inventors: 孙振庭; 彭善谦; 方吴德
Original assignee: Sanyang Industry Co Ltd
Current assignee: Sanyang Industry Co Ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-09-01
Anticipated expiration: 2029-12-09

Abstract

The utility model provides an engine, including a cylinder head, a cylinder, a crankcase, a bent axle, a crankcase lid, an oil supply duct and a bolster. The cylinder is connected with the cylinder head. The crankcase is connected with the cylinder. The crankshaft is arranged in the crankcase, wherein the crankshaft comprises a crankshaft oil circuit and a crankshaft end. The crankcase cover is connected with the crankcase and the crankshaft, wherein a pressure stabilizing groove is formed on the crankcase cover, and the crankshaft end is positioned in the pressure stabilizing groove. The oil supply duct is communicated with the pressure stabilizing groove and the crankshaft oil way, wherein the oil supply duct provides a working fluid, and the working fluid enters the pressure stabilizing groove from the oil supply duct and then flows into the crankshaft oil way through the crankshaft end. The buffer piece is arranged in the pressure stabilizing groove, and is suitable for elastic deformation when the first fluid pressure of the working fluid in the pressure stabilizing groove exceeds a critical value.

Description

Engine

Technical Field

Embodiments of the present invention relate to an engine, and more particularly, to an engine capable of reducing noise of oil pressure pulse.

Background

In the conventional engine, a crankshaft has a crankshaft oil passage, and a working fluid (lubricant) flows in the crankshaft oil passage, and when the crankshaft rotates to a specific angle, the working fluid in the crankshaft oil passage is ejected from a lubricant port of the crankshaft to provide a lubricating effect. After passing through the specific angle, the oil port is instantaneously closed, thereby causing an oil pressure pulse in the oil passage of the crankshaft. The oil pressure pulse causes vibration and noise of internal parts of the engine, which not only affects the attention of the driver, but also reduces the service life of the engine.

SUMMERY OF THE UTILITY MODEL

The present invention provides an engine for solving the problems of the prior art, which comprises a cylinder head, a cylinder, a crankcase, a crankshaft, a crankcase cover, an oil supply passage and a buffer member. The cylinder is connected with the cylinder head. The crankcase is connected with the cylinder. The crankshaft is arranged in the crankcase, wherein the crankshaft comprises a crankshaft oil circuit and a crankshaft end. The crankcase cover is connected with the crankcase and the crankshaft, wherein a pressure stabilizing groove is formed on the crankcase cover, and the crankshaft end is positioned in the pressure stabilizing groove. The oil supply duct is communicated with the pressure stabilizing groove and the crankshaft oil way, wherein the oil supply duct provides a working fluid, and the working fluid enters the pressure stabilizing groove from the oil supply duct and then flows into the crankshaft oil way through the crankshaft end. The buffer piece is arranged in the pressure stabilizing groove, and when the first fluid pressure of the working fluid in the pressure stabilizing groove exceeds a critical value, the buffer piece is suitable for elastic deformation to reduce the pressure of the working fluid.

In one embodiment, the surge tank includes a continuous wall, the crankshaft end of the crankshaft extends into the surge tank on a first side of the surge tank, the continuous wall surrounds the crankshaft end, the buffer covers a second side of the surge tank, the first side is opposite to the second side, and the buffer corresponds to the crankshaft end.

In one embodiment, the buffer member includes a flexible sheet covering the second side of the pressure stabilizing groove, and the flexible sheet is elastically deformed to reduce the fluid pressure when the fluid pressure of the working fluid exceeds the critical value.

In one embodiment, the damper further includes a first washer interposed between the flexible sheet and the second side of the surge tank, the first washer including a first washer opening corresponding to the crankshaft end.

In one embodiment, the engine further includes a side cover, wherein the buffer further includes a second gasket interposed between the flexible sheet and the side cover, the second gasket including a second gasket opening corresponding to the side cover.

In one embodiment, the engine further includes a plurality of locking members, a plurality of locking holes are formed on the second side of the pressure stabilizing groove, and the locking members penetrate through the side cover and the buffer member and are connected with the locking holes so as to lock and attach the side cover and the buffer member to the second side of the pressure stabilizing groove.

In one embodiment, the flexible sheet comprises a metal.

In one embodiment, the thickness of the flexible sheet is between 0.1mm and 1 mm.

In one embodiment, the thickness of the flexible sheet is between 0.2mm and 0.5 mm.

In one embodiment, when the first fluid pressure of the working fluid within the plenum exceeds the threshold value, the first fluid pressure is greater than a second fluid pressure of the working fluid within the oil supply gallery.

Use the utility model discloses engine because but bolster elastic deformation is in order to reduce working fluid's pressure, consequently can eliminate oil pressure pulse's influence, not only got rid of the abnormal sound, also prolonged the engine life-span.

Drawings

Fig. 1 is an exterior of a motorcycle according to an embodiment of the present invention.

Fig. 2 is an engine according to an embodiment of the present invention.

Fig. 3 is a partial cross-sectional view of an engine according to an embodiment of the present invention.

Fig. 4A is an exploded view of a buffer according to an embodiment of the present invention.

Fig. 4B is a cross-sectional view of a buffer according to an embodiment of the present invention.

Fig. 5 is a state where the side cover covers the second side of the surge tank according to the embodiment of the present invention.

Description of the main element symbols:

E-Engine

O-working fluid

1-cylinder head

2-cylinder

3-crankcase

4-crankshaft

41-crankshaft oil way

42-crankshaft end

43-crankshaft center

5-crankcase cover

51-pressure stabilizing tank

511 to the first side

512 to the second side

513-continuous wall

514-locking hole

6-oil supply duct

7-buffer member

71-first gasket

711 to first gasket opening

72 second gasket

721 opening of second gasket

73-Flexible sheet

74-rivet

8-side cover

89-locking part

91-tap

92-front wheel

93-rear wheel

94-cushion

95-power system

M-locomotive

Detailed Description

Referring to fig. 1, it is an exterior of a motorcycle M according to an embodiment of the present invention, including a steering head 91, a front wheel 92, a rear wheel 93, a seat cushion 94, a power system 95, and other elements.

The locomotive M includes a front section, a middle section, a rear section, and the like. The front section of the motorcycle M is provided with a steering head 91, a front wheel 92, a turn signal, a key hole, and the like. The middle section of the motorcycle M is provided with a power system 95, a seat cushion 94, and a foot rest. The rear section of the motorcycle M is provided with a tail lamp, a rear wheel 93, a fender, and the like.

The steering head 91 is used to control the traveling direction of the motorcycle M, and functional parts including a meter, a switch, a rear view mirror, etc. can be installed on the steering head 91. The faucet 91 also has a handle (including a refueling handle) by which a user may steer the faucet 91, adjust the throttle angle of the powertrain 95 via the refueling handle to control power take off, and slow the locomotive M via the hand brake. The faucet 91 may also be provided with a main light that provides the primary light illumination for the locomotive M.

The steering handle 91 is interlocked with the front wheel 92 by a steering handle rotation shaft, so that the angle of the front wheel 92 can be controlled by rotating the steering handle 91, thereby controlling the traveling direction of the motorcycle M.

The power system 95 is coupled to and drives the rear wheels 93, thereby powering the locomotive M and advancing the locomotive M.

Fig. 2 is an engine according to an embodiment of the present invention. Fig. 3 is a partial cross-sectional view of an engine according to an embodiment of the present invention. Referring to fig. 2 and 3, in one embodiment, the power system includes an engine E including a cylinder head 1, a cylinder 2, a crankcase 3, a crankshaft 4, a crankcase cover 5, an oil supply passage 6, and a buffer 7. A cylinder 2 is connected to the cylinder head 1. A crankcase 3 is connected to the cylinder 2. The crankshaft 4 is disposed in the crankcase 3, wherein the crankshaft 4 includes a crankshaft oil path 41 and a crankshaft end 42. The crankcase cover 5 is connected to the crankcase 3 and the crankshaft 4, wherein a surge tank 51 is formed on the crankcase cover 5, and the crankshaft end 42 is located in the surge tank 51. The oil supply passage 6 is communicated with the pressure stabilizing groove 51 and the crankshaft oil passage 41, wherein the oil supply passage 6 provides a working fluid O, and the working fluid O enters the pressure stabilizing groove 51 from the oil supply passage 6 and then flows into the crankshaft oil passage 41 through the crankshaft end 42. The cushion member 7 is provided in the surge tank 51. When a first fluid pressure of the working fluid O in the pressure stabilizing groove 51 exceeds a threshold value, the buffer member 7 is adapted to be elastically deformed to reduce the pressure of the working fluid O.

In one embodiment, the cylinder head 1 includes a plurality of combustion chambers.

In one embodiment, the crankcase cover 5 is coupled to the crankshaft 4 by a bearing. Specifically, the crankshaft 4 passes through the inside of the crankcase cover 5 to the outside of the crankcase cover 5. And the crank end 42 of the crankshaft 4 is located outside the crankcase cover 5 and within the surge tank 51.

Referring to fig. 2, in one embodiment, the surge tank 51 includes a continuous wall 513, the crankshaft end 42 of the crankshaft 4 extends into the surge tank 51 on a first side 511 of the surge tank 51, the continuous wall 513 surrounds the crankshaft end 42, the buffer 7 covers a second side 512 of the surge tank 51, the first side 511 is opposite to the second side 512, and the buffer 7 corresponds to the crankshaft end 42.

Fig. 4A is an exploded view of the buffer 7 according to the embodiment of the present invention. Fig. 4B is a cross-sectional view of the buffer 7 according to the embodiment of the present invention. Referring to fig. 4A and 4B, in an embodiment, the buffer 7 includes a flexible sheet 73, and the flexible sheet 73 covers the second side 512 of the surge tank 51. When the fluid pressure of the working fluid O exceeds the threshold value, the flexible sheet 73 is elastically deformed to reduce the fluid pressure.

Referring to fig. 4A, in an embodiment, the damper 7 further includes a first washer 71, the first washer 71 is interposed between the flexible sheet 73 and the second side 512 of the surge tank 51, the first washer 71 includes a first washer opening 711, and the first washer opening 711 corresponds to the crankshaft end 42.

With reference to fig. 2 and 4A, in an embodiment, the engine further includes a side cover 8, wherein the buffer 7 further includes a second gasket 72, the second gasket 72 is sandwiched between the flexible sheet 73 and the side cover 8, the second gasket 72 includes a second gasket opening 721, and the second gasket opening 721 corresponds to the side cover 8.

With reference to fig. 2, 4A and 4B, in an embodiment, the engine further includes a plurality of locking members 89, a plurality of locking holes 514 are formed on the second side 512 of the surge tank 51, the locking members 89 pass through the side cover 8 and the buffer member 7 and are connected to the locking holes 514, so as to lock the side cover 8 and the buffer member 7 to the second side 512 of the surge tank 51. Fig. 5 shows the side cover 8 covering the second side 512 of the surge tank 51, wherein the side cover 8 and the damper 7 substantially correspond to the crankshaft center 43 of the crankshaft 4, and in this embodiment, the crankshaft center 43 passes through the crankshaft end 42.

In one embodiment, the material of the flexible sheet 73 includes metal. In one embodiment, the thickness of the flexible sheet is between 0.1mm and 1 mm. In a preferred embodiment, the thickness of the flexible sheet is between 0.2mm and 0.5 mm.

Referring to fig. 2 and 4B, in an embodiment, the first washer 71 and the second washer 72 may be made of rubber, and the first washer 71, the flexible sheet 73 and the second washer 72 may be fixed by a rivet 74.

In another embodiment, the flexible sheet 73 may be at least partially encapsulated within the rubber material by injection molding.

In one embodiment, when the first fluid pressure of the working fluid O in the pressure maintaining groove 51 exceeds the threshold value, the first fluid pressure is greater than a second fluid pressure of the working fluid in the oil supply passage 6. In other words, in one embodiment, the buffer member 7 is adapted to be elastically deformed to reduce the pressure of the working fluid when the first fluid pressure exceeds the second fluid pressure. In one embodiment, the buffer 7 is adapted to elastically deform to and fro to reduce the pressure of the working fluid, and the frequency of action of the buffer 7 increases when the engine is running at a standstill.

In one embodiment, the crankshaft end 42 is the oil inlet end of the crankshaft oil path 41, so as to achieve a better pulse elimination effect. However, the disclosure is not limited to the present invention, and in different embodiments, the buffer 7 may be disposed at the oil outlet end of the crankshaft oil path 41.

Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An engine, comprising:

a cylinder head;

a cylinder connected to the cylinder head;

a crankcase connected to the cylinder;

the crankshaft is arranged in the crankcase and comprises a crankshaft oil way and a crankshaft end;

the crankcase cover is connected with the crankcase and the crankshaft, wherein a pressure stabilizing groove is formed on the crankcase cover, and the crankshaft end is positioned in the pressure stabilizing groove;

the oil supply channel is communicated with the pressure stabilizing groove and the crankshaft oil way, wherein the oil supply channel provides a working fluid, and the working fluid enters the pressure stabilizing groove from the oil supply channel and then flows into the crankshaft oil way through the crankshaft end; and

and the buffer piece is arranged in the pressure stabilizing groove, and is suitable for elastic deformation to reduce the pressure of the working fluid when the first fluid pressure of the working fluid in the pressure stabilizing groove exceeds a critical value.

2. An engine as in claim 1 wherein the surge tank includes a continuous wall, the crankshaft end of the crankshaft extends into the surge tank on a first side of the surge tank, the continuous wall surrounds the crankshaft end, the cushion covers a second side of the surge tank, the first side is opposite the second side, and the cushion corresponds to the crankshaft end.

3. An engine according to claim 2, wherein the damper comprises a flexible sheet covering the second side of the surge tank, the flexible sheet being elastically deformed to reduce the fluid pressure of the working fluid when the fluid pressure exceeds the threshold value.

4. The engine of claim 3, wherein the cushion further includes a first washer sandwiched between the flexible web and the second side of the surge tank, the first washer including a first washer opening, the first washer opening corresponding to the crankshaft end.

5. The engine of claim 4, further comprising a side cover, wherein the cushion further comprises a second gasket interposed between the flexible sheet and the side cover, the second gasket comprising a second gasket opening, the second gasket opening corresponding to the side cover.

6. The engine of claim 5 further comprising a plurality of fasteners, wherein a plurality of locking holes are formed on the second side of the stabilizer groove, the fasteners pass through the side cover and the buffer member and are connected to the locking holes to lock the side cover and the buffer member to the second side of the stabilizer groove.

7. An engine according to claim 6, wherein the flexible sheet comprises metal.

8. An engine according to claim 7, wherein the flexible sheet has a thickness of between 0.1mm and 1 mm.

9. An engine according to claim 8, wherein the flexible sheet has a thickness of between 0.2mm and 0.5 mm.

10. An engine as recited in claim 3 wherein said first fluid pressure of said working fluid within said plenum exceeds said threshold value by a second fluid pressure of said working fluid within said oil supply gallery.