CN201358827Y - Piston lubricating structure for pedal-type motorcycle engine - Google Patents
Piston lubricating structure for pedal-type motorcycle engine Download PDFInfo
- Publication number
- CN201358827Y CN201358827Y CNU2009200501438U CN200920050143U CN201358827Y CN 201358827 Y CN201358827 Y CN 201358827Y CN U2009200501438 U CNU2009200501438 U CN U2009200501438U CN 200920050143 U CN200920050143 U CN 200920050143U CN 201358827 Y CN201358827 Y CN 201358827Y
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- oil
- piston
- crankcase
- cylinder
- oil outlet
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- Lubrication Of Internal Combustion Engines (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a piston lubricating structure for a pedal-type motorcycle engine. The piston lubricating structure comprises a crankcase. An oil groove is formed on a cylinder mounting surface of the crankcase; one end of the oil groove is communicated with a main oil channel, and the other end thereof is communicated with an oil outlet of a case moulding surface of the crankcase; and an aperture opposite to the oil outlet is formed on an air feeding side of a cylinder sleeve of the piston. In the utility model, one end of the oil groove is communicated with the main oil channel, and the other end of the case moulding surface of the crankcase, so that the lubricating oil in the main oil channel can flow to the oil outlet through the oil groove, automatically drop into the aperture of the cylinder sleeve, and then enter the inner wall of the cylinder sleeve. The design realizes the effective lubrication of the working surfaces of the piston and the cylinder, and eliminates the dry-rubbing phenomenon of the piston and the cylinder at low speed or low temperature.
Description
Technical field
The utility model relates to a kind of motorcycle engine, relates in particular to a kind of piston lubrication structure of pedal motorcycle motor.
Background technique
Because the piston of motorcycle engine directly links to each other with the firing chamber, high temperature, high pressure that burning produces directly act on piston crown; Simultaneously, piston is reciprocating in cylinder, also can produce very high temperature with the cylinder inner wall friction, needs constantly to lubricate the reliability of the work that could guarantee and increase the service life.
At present, the piston lubrication of pedal motorcycle motor drives lubricating oil splash when mainly rotating by bent axle and to the cylinder bore inwall piston, cylinder body is lubricated.After the engine start, bent axle counterclockwise rotates, and the lubricant oil that is thrown out of at first is thrown to the exhaust side of cylinder-bore inwall under action of centrifugal force, and backwash is to the air inlet side of cylinder-bore inwall again.During low speed, engine speed and lubricant oil oil pressure are lower, and the lubricant oil oil mass that is splashed to the cylinder bore inwall is few, need the long period to form lubricant film in piston, cylinder body air inlet side.Draw by test, when 20 ℃ of room temperatures, engine speed 2000rpm, engine running just began to have lubricant oil in piston intake side skirt section in the time of 45 seconds.During low temperature, because oil body becomes big, the time of oiling can be slower.If often winter, low speed, short distance were used vehicle, the piston intake side is everlasting and is worked under the insufficient lubrication situation, causes piston, cylinder body, the early stage inordinate wear of piston ring easily, causes and burns lubricated wet goods fault.
In addition, some pedal motorcycle newly developed has increased a piston nozzle on casing, and the lubricant oil of lubricating pump output is transported to piston nozzle to the piston base oil spout by independent oil circuit.Test confirms, and is very low from the lubricant oil lift of piston nozzle ejection because the pump oil pressure of foot plate bicycle engine lubricant pump is lower during low speed, and cylinder body and piston lubricated do not had much improvement effects.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of and quickly and efficiently piston, cylinder body working surface is lubricated, the piston lubrication structure of dry grinding phenomenon between piston and cylinder body when eliminating low speed, low temperature effectively.
The technological scheme that its technical problem that solves the utility model adopts is:
A kind of piston lubrication structure of pedal motorcycle motor, it comprises crankcase, the cylinder body attachment face of described crankcase is provided with oil groove, one end of oil groove communicates with main oil gallery, the other end communicates with the oil outlet of crankcase assembling face, and the cylinder sleeve air inlet side of described piston is provided with the aperture relative with the oil outlet position;
As improvement of the technical scheme, described aperture is up big and down small coniform hole;
As further improvement in the technical proposal, two sides of described oil outlet are provided with leakproof oil gluten.
The beneficial effects of the utility model are: this product is owing to an end of oil groove communicates with main oil gallery, the other end communicates with the oil outlet of crankcase assembling face, so the lubricant oil in the main oil gallery can flow to the oil outlet place by oil groove, and drop onto automatically in the aperture of cylinder sleeve, thereby make lubricant oil enter the inwall of cylinder sleeve, this design is lubricated piston, cylinder body working surface effectively, the dry grinding phenomenon when eliminating low speed, low temperature between piston and cylinder body.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model other direction.
Embodiment
With reference to Fig. 1, Fig. 2, a kind of piston lubrication structure of pedal motorcycle motor, it comprises crankcase 1, the cylinder body attachment face of described crankcase 1 is provided with oil groove 2, one end of oil groove 2 communicates with main oil gallery 3, and the other end communicates with the oil outlet 4 of crankcase 1 mould assembling face, and the cylinder sleeve 5 air inlet sides of described piston are provided with the aperture 51 relative with oil outlet 4 positions, in order to make lubricant oil flow into the air inlet side of piston more easily, described aperture 51 is up big and down small coniform hole.
Lubrication principle of the present utility model is: because an end of oil groove 2 communicates with main oil gallery 3, the other end communicates with the oil outlet 4 of crankcase 1 mould assembling face, so the lubricant oil in the main oil gallery 3 can flow to oil outlet 4 places by oil groove 2, and drop onto automatically in the aperture 51 of cylinder sleeve 5, thereby make lubricant oil enter the inwall of cylinder sleeve 5, this design is lubricated piston, cylinder body working surface effectively, the dry grinding phenomenon when eliminating low speed, low temperature between piston and cylinder body.Through experimental verification ,-10 ℃, during engine speed 1500rpm, in 10 seconds of starting back, air inlet side in piston skirt just has been covered with lubricant oil.
In addition, because motor is when low speed, low temperature, the flow of lubrication of lubricating pump output is few, oil body is big, from the lubricant oil that oil outlet 4 comes out, under the adsorption force effect of lubricating oil viscosity, lubricant oil will be directly in the inwall inflow crankcase 1 of casing, in order to guarantee that the lubricant oil that oil outlet 4 comes out can freely drop onto in the aperture 51 of cylinder sleeve 5, so be provided with leakproof oil gluten 6 in two sides of oil outlet 4.
This product adopts the lubricant oil that comes out from oil outlet 4 to enter in the aperture 51 of cylinder sleeve 5 in the mode of automatic drippage, this scenario-frame practicality, and technology is simple, and cost is low, thereby can be widely used in the piston lubrication of pedal motorcycle motor.
Claims (3)
1. the piston lubrication structure of a pedal motorcycle motor, it is characterized in that: comprise crankcase (1), the cylinder body attachment face of described crankcase (1) is provided with oil groove (2), one end of oil groove (2) communicates with main oil gallery (3), the other end communicates with the oil outlet (4) of crankcase (1) mould assembling face, and the cylinder sleeve of described piston (5) air inlet side is provided with the aperture (51) relative with oil outlet (4) position.
2. the piston lubrication structure of a kind of pedal motorcycle motor according to claim 1 is characterized in that: described aperture (51) is up big and down small coniform hole.
3. the piston lubrication structure of a kind of pedal motorcycle motor according to claim 1 is characterized in that: two sides of described oil outlet (4) are provided with leakproof oil gluten (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200501438U CN201358827Y (en) | 2009-01-08 | 2009-01-08 | Piston lubricating structure for pedal-type motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200501438U CN201358827Y (en) | 2009-01-08 | 2009-01-08 | Piston lubricating structure for pedal-type motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201358827Y true CN201358827Y (en) | 2009-12-09 |
Family
ID=41424590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200501438U Expired - Lifetime CN201358827Y (en) | 2009-01-08 | 2009-01-08 | Piston lubricating structure for pedal-type motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201358827Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748155A (en) * | 2012-07-16 | 2012-10-24 | 庄景阳 | Novel cylinder |
| CN114526332A (en) * | 2022-02-23 | 2022-05-24 | 北京理工大学 | Piston copper sheathing structure with uninstallation lubricating function |
-
2009
- 2009-01-08 CN CNU2009200501438U patent/CN201358827Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748155A (en) * | 2012-07-16 | 2012-10-24 | 庄景阳 | Novel cylinder |
| CN114526332A (en) * | 2022-02-23 | 2022-05-24 | 北京理工大学 | Piston copper sheathing structure with uninstallation lubricating function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091209 |
|
| CX01 | Expiry of patent term |