CN204082332U - Mini four-stroke gasoline engine - Google Patents
Mini four-stroke gasoline engine Download PDFInfo
- Publication number
- CN204082332U CN204082332U CN201420566899.9U CN201420566899U CN204082332U CN 204082332 U CN204082332 U CN 204082332U CN 201420566899 U CN201420566899 U CN 201420566899U CN 204082332 U CN204082332 U CN 204082332U
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- oil
- cylinder body
- crankcase
- engine
- stroke gasoline
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- Lubrication Of Internal Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a kind of mini four-stroke gasoline engine, belong to technical field of internal combustion engines.It comprises cylinder body, crankcase, engine oil chamber, and cylinder head room, is provided with firing chamber in cylinder body, and engine oil chamber is used for storing lubricant oil; Piston is to-and-fro motion in cylinder body, and be connected with bent axle by connecting rod, bent axle has crankshaft oil hole, when during crank rotation, crankshaft oil hole overlaps with the crankcase oil channel hole on crankcase, lubricant oil is sucked in crankcase by the negative pressure in crankcase from engine oil chamber by machine oil flexible pipe, crankcase oil channel hole, crankshaft oil hole, plays the effect of lubricating movement part.When machine runs, machine oil droplet is brought into cam chamber lubrication cam and lower shake-changing arm by cam, cylinder head room lubricating distribution mechanism is entered by tappet, balance tracheae is by gas-liquid separation net filtering machine oil, balance body internal pressure, the utility model is mainly used in small-scale agricultural machinery, graden machine etc., it solves the defect that existing mini four-stroke gasoline engine cannot tilt or be inverted long-time running.
Description
Technical field
The utility model relates to technical field of internal combustion engines, particularly relates to a kind of mini four-stroke gasoline engine.
Background technique
In fields such as graden machine, equipment for plant protection, little agricultural machinery, mostly supporting small two stroke gasoline.Four-stroke gasoline engine has obvious superiority than two-stroke gasoline engine in discharge.The effulent of four-stroke gasoline engine NOx, CO and HC is obviously low relative to two-stroke gasoline engine, so the use of four-stroke gasoline engine is improving important in inhibiting in air quality.
And occupy an leading position at present as the small two stroke gasoline that the fields such as graden machine, equipment for plant protection, little agricultural machinery are supporting, determine primarily of following two aspects:
One, traditional small two stroke gasoline adopts Mixed lubrication, namely gasoline and machine oil are stored in fuel tank after mixing by a certain percentage and supply petrol engine use, and miscella enters crankcase lubrication moving element and enters into firing chamber and participates in burning after Carburetor atomization.This kind of structures shape of two-stroke gasoline engine petrol engine can tilt arbitrarily or be inverted, and does not affect it and run.This kind of structural advantage of small two stroke gasoline makes it be used widely in fields such as graden machine, equipment for plant protection, little agricultural machinery, because often need to tilt arbitrarily or inversion work at these field petrol engine.
Two, small two stroke gasoline is mostly as supporting power in field such as graden machine, equipment for plant protection, little agricultural machinery, and the basic Dou Shi family of these facility uses.This just requires must be lightweight, compact structure.
Mini four-stroke gasoline engine volume is in the market large, and weight is large, and especially lubrication system adopts splash lubrication mostly, long-play under this state just making this type of petrol engine not to be inverted and to tilt.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art, provides a kind of volume little, lightweight, especially can be inverted and tilt state under long playing mini four-stroke gasoline engine.
The utility model comprises cylinder body, piston in combination, and it is reciprocating that described piston in combination is fixed on cylinder body, and cylinder body, piston in combination, intake valve, exhaust valve, spark plug form firing chamber; Described piston in combination is connected with bent axle, and bent axle does free rotation relative to crankcase center; Described crankcase top is connected with cylinder body; Described bent axle is provided with oil channel hole; Described crankcase is provided with oil channel hole, and machine oil flexible pipe is connected with oil channel hole; Oil sump, crankcase form engine oil chamber, and the bottom of machine oil flexible pipe is immersed in the lubricant oil in engine oil chamber; Described crankcase pit bottom section is fixed with fuel tank, and fuel tank is connected by oil inlet pipe, return tube with diaphragm carburetor; Described bent axle one end is fixed with magneto rotor, magneto rotor is provided with magnet, cylinder body is provided with spark coil, spark coil is connected with high voltage wire, the end of high voltage wire is fixed with cavity cap, and cavity cap is connected with spark plug, forms described four-stroke gasoline engine ignition system; Described magneto rotor bottom is provided with fan blade, and fan guard is fixed on cylinder body, and cylinder body guard shield covers on petrol engine, and the cooled blade above fan blade, fan guard, cylinder body guard shield and cylinder body forms the cooling system of described four-stroke gasoline engine; Described diaphragm carburetor is connected with cylinder body suction port by suction tude, and silencing apparatus is connected with cylinder body relief opening; Described magneto rotor is provided with output shaft, and described fan guard is provided with rolling bearing, and rolling bearing is played a supporting role to output shaft.
Distribution device, comprises the timing gear be fixed on bent axle, the cam wheel be engaged with, lower shake-changing arm, tappet, upper rocker arm.
Lubricating structure, comprises gas-liquid separation net, and cowl hood combines, and air filter inner cover combines, machine oil pipe, leaf valve, cylinder body one-way valve, leaf valve.
Compared with prior art; the beneficial effects of the utility model are: greatly reduce relative to the pollutant of two-stroke gasoline engine; have lightweight; be easy to carry the feature of transporting; and the lubrication system of its uniqueness can be inverted and tilt state under long-play, power can be provided for the graden machine, equipment for plant protection, little agricultural machinery etc. of packaged type or hand-held.
Accompanying drawing explanation
Fig. 1 is the sectional drawing that the utility model petrol engine is painted along crank rotation center and cylinder centerline;
Fig. 2 is the sectional drawing that petrol engine of the present utility model is painted along intake duct and cylinder centerline;
Fig. 3 is the sectional drawing that petrol engine of the present utility model is painted along intake duct and cylinder centerline.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
In figure: 1, air filter case combines, 2, Membranvergaser, 3, return tube, 4, oil inlet pipe, 5, baffler, 6, exhaust valve, 7, gas-liquid separation net, 8, upper rocker arm, 9, intake valve, 10, cylinder body guard shield, 11, suction tude, 12, cowl hood combines, 13, tappet, 14, piston in combination, 15, lower shake-changing arm, 16, cam wheel, 17, timing gear, 18, crankshaft oil hole, 19, box body oil duct hole, 20, crankshaft group, 21, casing, 22, machine oil pipe, 23, oil sump, 24, fuel tank, 25, fan guard, 26, magneto rotor, 27, bearing, 28, coupling shaft, 29, cylinder body, 30, Magnetor stator, 31, high voltage wire, 32, spark plug.
Embodiment one
A kind of mini four-stroke gasoline engine, comprise cylinder body, piston in combination, piston in combination is fixed on cylinder body reciprocating, and cylinder body, piston in combination, intake valve, exhaust valve, spark plug form firing chamber;
As shown in Figure 1, Figure 2, Figure 3 shows, piston in combination is connected with bent axle, and bent axle can do free rotation relative to crankcase center;
Cylinder body is provided with cylinder-body oil duct hole, is provided with cylinder body one-way valve below;
Crankcase bottom is equipped with leaf valve, and top is connected with cylinder body;
Bent axle is provided with crankshaft oil hole and box body oil duct hole;
Crankcase is provided with crankcase oil channel hole, and machine oil flexible pipe is connected with oil channel hole;
Oil sump, crankcase form the engine oil chamber that stores lubricant oil, and the bottom of machine oil flexible pipe is immersed in the lubricant oil in engine oil chamber;
Crankcase pit bottom section is fixed with fuel tank, and fuel tank is connected by oil inlet pipe, return tube with diaphragm carburetor;
Magneto rotor is fixed in bent axle one end, and magneto rotor is furnished with magnet, and Magnetor stator is fixed on cylinder body, and Magnetor stator is connected with high voltage wire, and the end of high voltage wire is connected with spark plug, constitutes mini four-stroke gasoline engine ignition system;
Magneto rotor bottom is provided with fan blade, and fan guard is fixed on cylinder body, and cylinder body guard shield covers on petrol engine, and the cooled blade above fan blade, fan guard, cylinder body guard shield and cylinder body constitutes the cooling system of mini four-stroke gasoline engine;
Intake valve is located at cylinder body suction port and is carried out opening and closing, and exhaust valve is located at cylinder body relief opening and is carried out opening and closing;
Diaphragm carburetor is connected with cylinder body suction port by suction tude, and silencing apparatus is connected with cylinder body relief opening;
Coupling shaft is fixed on magneto rotor, and rolling bearing is assemblied on fan guard, and rolling bearing is played a supporting role to coupling shaft.
Distribution device, comprises the timing gear be fixed on bent axle, the cam wheel be engaged with, lower shake-changing arm, tappet, upper rocker arm.
Gas-liquid separation net is positioned at cowl hood and combines inner separated oil and gas.
Embodiment two
Magneto rotor is provided with tightening piece, and other is identical with embodiment one.
As depicted in figs. 1 and 2, piston in combination is reciprocating in cylinder body, and cylinder body, piston in combination, intake valve, exhaust valve, spark plug form firing chamber.
Piston in combination is connected with bent axle, and piston in combination, in the to-and-fro motion of cylinder body, changes into crankshaft rotating motion.
Crankcase top is connected with cylinder body.When piston in combination is run towards direction, firing chamber, in the chamber be made up of cylinder body and crankcase top, certain negative pressure can be formed.Bent axle is provided with crankshaft oil hole.Crankcase is provided with crankcase oil channel hole, and machine oil flexible pipe is connected with crankcase oil channel hole.Oil sump, crankcase form the oil chamber that stores lubricant oil, and the bottom of machine oil flexible pipe is immersed in the lubricant oil in oil chamber.When during crank rotation, crankshaft oil hole overlaps with the crankcase oil channel hole on crankcase, lubricant oil to be sucked by the negative pressure in crankcase from oil chamber by machine oil flexible pipe, crankcase oil channel hole, crankshaft oil hole in the chamber that is made up of cylinder body and crankcase top, plays the effect of lubricating movement part.When gear rotates, lubricant oil enters into cam chamber from oil chamber by crankcase oil channel hole two, cylinder head room lubricating distribution mechanism is entered into through tappet bore, lubricant mist is by gas-liquid separation net filtering machine oil, the gas of internal body combines through cowl hood, air filter inner cover combines, balance with external pressure, the machine oil be filtered off is through cylinder body back oil road hole, cylinder body one-way valve, cylinder-body oil duct hole enters cylinder interior profit and changes piston in combination, unnecessary machine oil by leaf valve when bent axle is descending, the ingress engine that is opened grease chamber, because machine oil hose materials is soft, can bend arbitrarily, therefore no matter how petrol engine tilts, machine oil flexible pipe always may be dipped in lubricant oil.
Crankcase pit bottom section is screwed fuel tank, and fuel tank is connected by oil inlet pipe, return tube with diaphragm carburetor;
Magneto rotor is fixed in bent axle one end, and magneto rotor is furnished with magnet, and Magnetor stator is fixed on cylinder body, and Magnetor stator is connected with high voltage wire, and the end of high voltage wire is connected with spark plug, constitutes mini four-stroke gasoline engine ignition system;
Magneto rotor bottom is provided with fan blade, and fan guard is fixed on cylinder body, and cylinder body guard shield covers on petrol engine, and the cooled blade above fan blade, fan guard, cylinder body guard shield and cylinder body constitutes the cooling system of mini four-stroke gasoline engine;
Intake valve is located at cylinder body suction port and is carried out opening and closing, and exhaust valve is located at cylinder body relief opening and is carried out opening and closing;
Diaphragm carburetor is connected with cylinder body suction port by suction tude, and silencing apparatus is connected with cylinder body relief opening;
Coupling shaft is fixed on magneto rotor, and rolling bearing is assemblied on fan guard, and rolling bearing is played a supporting role to coupling shaft.
Distribution device, comprises the timing gear be fixed on bent axle, the cam wheel be engaged with, lower shake-changing arm, tappet, upper rocker arm.Torque on bent axle is delivered to intake valve and exhaust valve via timing gear, rocking arm, tappet, upper rocker arm etc., makes the suction port of cylinder body and relief opening carry out opening and closing.
In embodiment one, coupling shaft is fixed on magneto rotor, and rolling bearing is assemblied on fan guard, and rolling bearing is played a supporting role to coupling shaft.
In embodiment two, magneto rotor is provided with tightening piece, and tightening piece is a kind of engaging and disengaging gear relying on gasoline engine crank rotating speed to control.
Claims (2)
1. a mini four-stroke gasoline engine, comprises cylinder body, piston in combination, it is characterized in that: it is reciprocating that described piston in combination is fixed on cylinder body, and cylinder body, piston in combination, intake valve, exhaust valve, spark plug form firing chamber; Described piston in combination is connected with bent axle, and bent axle does free rotation relative to crankcase center; Described crankcase bottom is provided with leaf valve, and top is connected with cylinder body; Described bent axle is provided with oil channel hole; Described crankcase is provided with oil channel hole, and machine oil flexible pipe is connected with oil channel hole; Oil sump, crankcase form engine oil chamber, and the bottom of machine oil flexible pipe is immersed in the lubricant oil in engine oil chamber; Described crankcase pit bottom section is fixed with fuel tank, and fuel tank is connected by oil inlet pipe, return tube with diaphragm carburetor; Described bent axle one end is fixed with magneto rotor, magneto rotor is provided with magnet, cylinder body is provided with spark coil, spark coil is connected with high voltage wire, the end of high voltage wire is fixed with cavity cap, and cavity cap is connected with spark plug, forms described four-stroke gasoline engine ignition system; Described magneto rotor bottom is provided with fan blade, and fan guard is fixed on cylinder body, and cylinder body guard shield covers on petrol engine, and the cooled blade above fan blade, fan guard, cylinder body guard shield and cylinder body forms the cooling system of described four-stroke gasoline engine; Described diaphragm carburetor is connected with cylinder body suction port by suction tude, and silencing apparatus is connected with cylinder body relief opening; Described magneto rotor is provided with output shaft, described fan guard is provided with rolling bearing.
2. mini four-stroke gasoline engine according to claim 1, is characterized in that: described magneto rotor is provided with tightening piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420566899.9U CN204082332U (en) | 2014-09-29 | 2014-09-29 | Mini four-stroke gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420566899.9U CN204082332U (en) | 2014-09-29 | 2014-09-29 | Mini four-stroke gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082332U true CN204082332U (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420566899.9U Expired - Fee Related CN204082332U (en) | 2014-09-29 | 2014-09-29 | Mini four-stroke gasoline engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN204082332U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673132A (en) * | 2016-03-18 | 2016-06-15 | 浙江亚特电器有限公司 | Quantitative and one-way oil-gas lubrication system and method for four-stroke engine |
| CN106351709A (en) * | 2016-11-04 | 2017-01-25 | 重庆润通科技有限公司 | Four-stroke engine lubricating system |
| CN109268101A (en) * | 2018-09-27 | 2019-01-25 | 浙江亚特电器有限公司 | A kind of lubricating system of four-stroke engine and tool equipment with four-stroke engine |
| CN109736917A (en) * | 2018-12-28 | 2019-05-10 | 南京工业职业技术学院 | A kind of internal combustion engine that high efficiency of energy utilizes |
-
2014
- 2014-09-29 CN CN201420566899.9U patent/CN204082332U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673132A (en) * | 2016-03-18 | 2016-06-15 | 浙江亚特电器有限公司 | Quantitative and one-way oil-gas lubrication system and method for four-stroke engine |
| US11300020B2 (en) | 2016-03-18 | 2022-04-12 | Zhejiang Yat Electrical Appliance Co., Ltd | Quantitative one-way oil gas lubricant system and method for 4-stroke engine |
| CN106351709A (en) * | 2016-11-04 | 2017-01-25 | 重庆润通科技有限公司 | Four-stroke engine lubricating system |
| CN106351709B (en) * | 2016-11-04 | 2018-09-18 | 重庆润通科技有限公司 | Four-stroke engine lubricating system |
| CN109268101A (en) * | 2018-09-27 | 2019-01-25 | 浙江亚特电器有限公司 | A kind of lubricating system of four-stroke engine and tool equipment with four-stroke engine |
| CN109268101B (en) * | 2018-09-27 | 2024-04-09 | 浙江亚特电器股份有限公司 | Lubrication system of four-stroke engine and tool equipment with four-stroke engine |
| CN109736917A (en) * | 2018-12-28 | 2019-05-10 | 南京工业职业技术学院 | A kind of internal combustion engine that high efficiency of energy utilizes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANDONG YONGJIA POWER CO., LTD. Free format text: FORMER OWNER: LINYI SANHE YONGJIA POWER CO., LTD. Effective date: 20150331 |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 276000 LINYI, SHANDONG PROVINCE TO: 276025 LINYI, SHANDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150331 Address after: 276025 south section of Kunming Road, Linyi Economic Development Zone, Shandong Patentee after: SHANDONG YONGJIA POWER CO., LTD. Address before: 276000 middle section of Huang Huang Road, Lanshan District, Shandong, Linyi Patentee before: Linyi Sanhe Yongjia Power Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20150929 |
|
| EXPY | Termination of patent right or utility model |