CN204060930U - Four stroke engine - Google Patents
Four stroke engine Download PDFInfo
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- CN204060930U CN204060930U CN201420485601.1U CN201420485601U CN204060930U CN 204060930 U CN204060930 U CN 204060930U CN 201420485601 U CN201420485601 U CN 201420485601U CN 204060930 U CN204060930 U CN 204060930U
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- gas
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- mixed oil
- crankshaft room
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Abstract
The utility model belongs to mini engine field, particularly relate to the four stroke engine of a kind of turning 360 °, comprise cylinder body, piston, crankshaft group and Carburetor, Carburetor is used for providing mixed oil and gas for gas-entered passageway, and mixed oil and gas is by gas-entered passageway conducting to the intake valve assembly in rocker arm chamber, and mixed oil and gas passes through gas-entered passageway conducting to the intake valve assembly in rocker arm chamber; Described gas-entered passageway is provided with the branch road being communicated to crankshaft room, this branch road is mixed oil and gas lubrication channel, and the bottom of crankshaft room is communicated with unidirectional valve chamber, unidirectional valve chamber and described cam chamber conducting, one-way valve indoor are provided with opens when crankshaft room's malleation, the one-way valve of closing during negative pressure.The utility model adopts mini four-stroke upset motor to provide power for portable instrument, its compared to existing technology in two-stroke upset motor, there is the advantage that discharge is low, oil consumption is low, noise is little, especially hand-held portable instrument is applicable to, greatly can improve the operating conditions of operator, can 30-40% be reduced with specific fuel consumption.
Description
Technical field
The utility model belongs to mini engine field, particularly relates to the four stroke engine of turning 360 ° for portable dams such as brush cutter, chain saw, suction machines.
Background technique
At present, domestic and international mini engine application widely, and many working condition requirements start function 360 ° overturn use, in office where position all can normally work, as the portable dam such as Green fence cutter, chain saw.The mini engine great majority that these portable dams use at present are two-stroke gasoline engine, along with domestic and international to environmental protection and energy-conservation requirement increasingly stringent, Abgasgesetz for small-sized universal engine constantly adds sternly, and two stroke engine discharge is high, oil consumption is high, noise is large, is difficult to the standard reaching increasingly stringent.Caused by the structure of two stroke engine and working principle, discharge high, that oil consumption is high, noise is large problem and be difficult to solve.
Model utility content
The purpose of this utility model is to provide and a kind ofly solves that the discharge of small two-stroke upset motor is high, a kind of of oil consumption is high, noise is large problem discharges low, that oil consumption is low, noise is little mini four-stroke upset motor.
The purpose of this utility model is achieved in that
Four stroke engine, comprises
Cylinder body, is provided with main chamber in it, and main chamber comprises the firing chamber and crankshaft room that communicate with each other; Described firing chamber is provided with gas-entered passageway and exhaust passage, described gas-entered passageway and joint, firing chamber are provided with the intake valve assembly controlling its gas circuit conducting or cut-off, and described exhaust passage and joint, firing chamber are provided with the exhaust valve assemblies controlling its gas circuit conducting or cut-off; Be provided with piston in described firing chamber, be provided with crankshaft group in described crankshaft room, described piston is connected with crankshaft group and drives it to operate, the external Driving Torque of described crankshaft group;
Described crankshaft room is arranged with the unidirectional valve chamber be connected with crankshaft room, is provided with one-way valve between described crankshaft room and unidirectional valve chamber, and described one-way valve is opened when crankshaft room's malleation, closes during negative pressure;
Carburetor, it is for providing mixed oil and gas for firing chamber, and described mixed oil and gas enters in firing chamber by gas-entered passageway;
Ignition mechanism, it is for the mixed oil and gas of pilot combustion indoor, and described ignition mechanism is arranged on cylinder body;
Described cylinder body is outside equipped with rocker arm chamber, and it accommodates described intake valve assembly, exhaust valve assemblies and upper rocker arm;
The outside of described cylinder body is also provided with cam chamber, arranges timing gear and cam and rack unit in it; Described timing gear and crankshaft group link, and then driving cam gear assembly, and described cam and rack unit drives described intake valve assembly and exhaust valve assemblies by upper rocker arm;
Be provided with mixed oil and gas lubrication channel between described gas-entered passageway and crankshaft room, the conducting when crankshaft room's negative pressure of mixed oil and gas lubrication channel, closes during malleation; Described unidirectional valve chamber and described cam chamber conducting, described cam chamber and rocker arm chamber conducting, described rocker arm chamber is by gas channel and gas-entered passageway conducting;
Described mixed oil and gas lubrication channel is provided with more than one, and the port of mixed oil and gas lubrication channel is communicated to described crankshaft room; During described piston up-down, the sidewall shutoff of piston lower portion or open described mixed oil and gas lubrication channel.
Described unidirectional valve chamber is arranged on the below of crankshaft room, and the one-way valve of described one-way valve indoor is provided with more than one.
Described mixed oil and gas is the gaseous mixture of air, fuel oil, lubricant oil.
The utility model gives prominence to compared to existing technology and useful technique effect is:
The utility model adopts mini four-stroke upset motor to provide power for portable instrument, its compared to existing technology in two-stroke upset motor, there is the advantage that discharge is low, oil consumption is low, noise is little, especially hand-held portable instrument is applicable to, greatly can improve the operating conditions of operator, can 30-40% be reduced with specific fuel consumption;
The utility model adopts mixed oil and gas to lubricate each parts, and can reduce the temperature of crankcase, meanwhile, lubrication mode of the present utility model is unidirectional, constantly has fresh mix oil gas to enter crankshaft room, there will not be machine oil denaturalization phenomenon.
Accompanying drawing explanation
Fig. 1 is the utility model mini four-stroke engine structure schematic diagram.
Fig. 2 is that sectional view is looked on a left side for the motor shown in Fig. 1.
Fig. 3 is the utility model mini four-stroke engine lubrication working principle sketch.
1-Carburetor; 2-suction tude; 3-gas-entered passageway; 4-intake valve assembly; 5-rocker arm chamber; 6-exhaust valve assemblies; 7-exhaust passage; 8-cylinder body; 9-firing chamber; 10-crankshaft room; 11-casing; The unidirectional valve chamber of 12-; 13-mixed oil and gas lubrication channel; 14-cam chamber; 15-cam and rack unit; 17-gas channel; 18-upper rocker arm; 19-piston; 20-crankshaft group; 21-one-way valve.
Embodiment
The utility model is further described with specific embodiment below in conjunction with accompanying drawing:
As Figure 1-3,
Four stroke engine, comprises
Cylinder body 8, main chamber is provided with in it, main chamber comprises the firing chamber 9 and crankshaft room 10 that communicate with each other, described firing chamber is provided with gas-entered passageway and exhaust passage, described gas-entered passageway and joint, firing chamber 9 are provided with the intake valve assembly 4 controlling its gas circuit conducting or cut-off, described exhaust passage and joint, firing chamber 9 are provided with the exhaust valve assemblies 6 controlling its gas circuit conducting or cut-off, in described firing chamber 9, piston 19 is installed, be provided with crankshaft group 20 in crankshaft room 10, the bottom of piston 19 is connected with crankshaft group 20 and drives it to operate; Crankshaft group 20 is Driving Torque externally;
Described crankshaft room 10 is arranged with the unidirectional valve chamber 12 be connected with crankshaft room, is provided with one-way valve 21 between described crankshaft room and unidirectional valve chamber, and described one-way valve is opened when crankshaft room's malleation, closes during negative pressure;
Carburetor 1, it is for providing mixed oil and gas for gas-entered passageway 3, and mixed oil and gas is by gas-entered passageway 3 conducting to the intake valve assembly 4 in rocker arm chamber 5, and mixed oil and gas refers to the gaseous mixture of air, fuel oil, lubricant oil;
Ignition mechanism, it is for the mixed oil and gas in ignition combustion chamber 9, and ignition mechanism is arranged on cylinder body 8;
The outside of described cylinder body 8 is also provided with rocker arm chamber 5 (rocker arm chamber 5 is arranged on cylinder body top by end cap and is formed), and it accommodates intake valve assembly 4, exhaust valve assemblies 6 and upper rocker arm;
The outside of described cylinder body 8 is also provided with cam chamber 14, its collecting timing gear and cam and rack unit 15; Described timing gear and crankshaft group 20 link, and then driving cam gear assembly 15, and cam and rack unit 15 drives described intake valve assembly 4 and exhaust valve assemblies 6 by upper rocker arm;
Described gas-entered passageway 3 is provided with the branch road being communicated to crankshaft room 10, and this branch road is mixed oil and gas lubrication channel 13, and the conducting when crankshaft room's negative pressure of mixed oil and gas lubrication channel, closes during malleation; Described unidirectional valve chamber and described cam chamber conducting, described cam chamber and rocker arm chamber conducting, described rocker arm chamber is by gas channel 17 and gas-entered passageway conducting.
Preferably, described mixed oil and gas lubrication channel 13 is provided with more than one, and the port of mixed oil and gas lubrication channel 13 is communicated to described crankshaft room 10; When described piston 19 moves up and down, the sidewall shutoff of piston 19 bottom or open described mixed oil and gas lubrication channel 13.
Preferably, described unidirectional valve chamber 12 is arranged on the below of crankshaft room 10, and the one-way valve in described unidirectional valve chamber 12 is provided with more than one.
When aspirating stroke, upper rocker arm controls intake valve assembly 4 and opens, exhaust valve assemblies 6 is closed, piston 19 is descending and close mixed oil and gas lubrication channel 13, the mixed oil and gas of gas-entered passageway 3 is inhaled in firing chamber 9, now, crankshaft room 10 is malleation, mixed oil and gas in crankshaft room 10 is pressed into unidirectional valve chamber 12, through cam chamber 14, enter rocker arm chamber 5 again, lubrication cam and rack unit 15 in cam chamber 14, the moving elements such as the upper rocker arm in rocker arm chamber 5 are lubricated, mixed oil and gas in rocker arm chamber 5 enters gas-entered passageway 3 by gas channel 17, enter combustion chambers burn again.
When compression stroke, intake valve assembly 4 and exhaust valve assemblies 6 are closed, piston 19 is up and compression enters the mixed oil and gas of firing chamber 9, mixed oil and gas lubrication channel 13 conducting, now, form negative pressure in crankshaft room 10 and the mixed oil and gas in mixed oil and gas lubrication channel 13 is sucked in crankshaft room 10, moving element such as lubrication crankshaft group 20 grade.
When expansion stroke, intake valve assembly 4 is closed, and exhaust valve assemblies 6 is closed, ignition mechanism (that is, spark plug) is lighted by the mixed oil and gas compressed, and the gas of burning sharply expands, promote piston 19 descending, can convert mechanical energy to by interior, piston 19 closes oil-in-gasoline lubrication passage again, and now crankshaft room 10 is malleation, mixed oil and gas is pressed into unidirectional valve chamber 12 from crankshaft room 10, through cam chamber 14, then enter rocker arm chamber 5, moving element such as lubrication cam and rack unit 15 grade.
When exhaust stroke, piston 19 is up, and intake valve assembly 4 is closed, and exhaust valve assemblies 6 is opened, and again forms negative pressure simultaneously, open oil-in-gasoline lubrication passage, sucked by mixed oil and gas in crankshaft room 10 in crankshaft room 10, the moving elements such as lubrication bent axle.
The utility model adopts mini four-stroke upset motor to provide power for portable instrument, its compared to existing technology in two-stroke upset motor, there is the advantage that discharge is low, oil consumption is low, noise is little, especially hand-held portable instrument is applicable to, greatly can improve the operating conditions of operator, can 30-40% be reduced with specific fuel consumption;
The utility model adopts mixed oil and gas to lubricate each parts, and can reduce the temperature of crankcase, meanwhile, lubrication mode of the present utility model is unidirectional, constantly has fresh mix oil gas to enter crankshaft room 10, there will not be machine oil denaturalization phenomenon.
Adopt the utility model, crankcase temperature can control at about 90 degree, and cam chamber temperature can control at 95 degree, and for the portable instrument of Si Dier brand on the market, its crankcase temperature is generally 115 degree, and its cam chamber temperature is generally 125 degree.
Above-described embodiment is only preferred embodiment of the present utility model, not limits protection domain of the present utility model according to this, therefore: all equivalence changes done according to structure of the present utility model, shape, principle, all should be covered by within protection domain of the present utility model.
Claims (4)
1. four stroke engine, is characterized in that, comprises
Cylinder body, is provided with main chamber in it, and main chamber comprises the firing chamber and crankshaft room that communicate with each other; Described firing chamber is provided with gas-entered passageway and exhaust passage, described gas-entered passageway and joint, firing chamber are provided with the intake valve assembly controlling its gas circuit conducting or cut-off, and described exhaust passage and joint, firing chamber are provided with the exhaust valve assemblies controlling its gas circuit conducting or cut-off; Be provided with piston in described firing chamber, be provided with crankshaft group in described crankshaft room, described piston is connected with crankshaft group and drives it to operate, the external Driving Torque of described crankshaft group;
Described crankshaft room is arranged with the unidirectional valve chamber be connected with crankshaft room, is provided with one-way valve between described crankshaft room and unidirectional valve chamber, and described one-way valve is opened when crankshaft room's malleation, closes during negative pressure;
Carburetor, it is for providing mixed oil and gas for firing chamber, and described mixed oil and gas enters in firing chamber by gas-entered passageway;
Ignition mechanism, it is for the mixed oil and gas of pilot combustion indoor, and described ignition mechanism is arranged on cylinder body;
Described cylinder body is outside equipped with rocker arm chamber, and it accommodates described intake valve assembly, exhaust valve assemblies and upper rocker arm;
The outside of described cylinder body is also provided with cam chamber, arranges timing gear and cam and rack unit in it; Described timing gear and crankshaft group link, and then driving cam gear assembly, and described cam and rack unit drives described intake valve assembly and exhaust valve assemblies by upper rocker arm;
Be provided with mixed oil and gas lubrication channel between described gas-entered passageway and crankshaft room, the conducting when crankshaft room's negative pressure of mixed oil and gas lubrication channel, closes during malleation; Described unidirectional valve chamber and described cam chamber conducting, described cam chamber and rocker arm chamber conducting, described rocker arm chamber is by gas channel and gas-entered passageway conducting.
2. four stroke engine according to claim 1, is characterized in that, described mixed oil and gas lubrication channel is provided with more than one, and the port of mixed oil and gas lubrication channel is communicated to described crankshaft room; During described piston up-down, the sidewall shutoff of piston lower portion or open described mixed oil and gas lubrication channel.
3. four stroke engine according to claim 1, is characterized in that, described unidirectional valve chamber is arranged on the below of crankshaft room, and the one-way valve of described one-way valve indoor is provided with more than one.
4. four stroke engine according to claim 1, is characterized in that, described mixed oil and gas is the gaseous mixture of air, fuel oil, lubricant oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420485601.1U CN204060930U (en) | 2014-08-26 | 2014-08-26 | Four stroke engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420485601.1U CN204060930U (en) | 2014-08-26 | 2014-08-26 | Four stroke engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204060930U true CN204060930U (en) | 2014-12-31 |
Family
ID=52202462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420485601.1U Active CN204060930U (en) | 2014-08-26 | 2014-08-26 | Four stroke engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN204060930U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196624A (en) * | 2014-08-26 | 2014-12-10 | 台州庆隆机电有限公司 | Four-stroke engine |
| US10428705B2 (en) | 2017-05-15 | 2019-10-01 | Polaris Industries Inc. | Engine |
| US10550754B2 (en) | 2017-05-15 | 2020-02-04 | Polaris Industries Inc. | Engine |
| US10576817B2 (en) | 2017-05-15 | 2020-03-03 | Polaris Industries Inc. | Three-wheeled vehicle |
| US10639985B2 (en) | 2017-05-15 | 2020-05-05 | Polaris Industries Inc. | Three-wheeled vehicle |
| USD904227S1 (en) | 2018-10-26 | 2020-12-08 | Polaris Industries Inc. | Headlight of a three-wheeled vehicle |
-
2014
- 2014-08-26 CN CN201420485601.1U patent/CN204060930U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196624A (en) * | 2014-08-26 | 2014-12-10 | 台州庆隆机电有限公司 | Four-stroke engine |
| US10428705B2 (en) | 2017-05-15 | 2019-10-01 | Polaris Industries Inc. | Engine |
| US10550754B2 (en) | 2017-05-15 | 2020-02-04 | Polaris Industries Inc. | Engine |
| US10576817B2 (en) | 2017-05-15 | 2020-03-03 | Polaris Industries Inc. | Three-wheeled vehicle |
| US10639985B2 (en) | 2017-05-15 | 2020-05-05 | Polaris Industries Inc. | Three-wheeled vehicle |
| US11041426B2 (en) | 2017-05-15 | 2021-06-22 | Polaris Industries Inc. | Engine |
| US11572813B2 (en) | 2017-05-15 | 2023-02-07 | Polaris Industries Inc. | Engine |
| US11614019B2 (en) | 2017-05-15 | 2023-03-28 | Polaris Industries Inc. | Engine |
| USD904227S1 (en) | 2018-10-26 | 2020-12-08 | Polaris Industries Inc. | Headlight of a three-wheeled vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |