CN200978692Y - Mini rotary four-stroke gasoline engine - Google Patents
Mini rotary four-stroke gasoline engine Download PDFInfo
- Publication number
- CN200978692Y CN200978692Y CN 200620125307 CN200620125307U CN200978692Y CN 200978692 Y CN200978692 Y CN 200978692Y CN 200620125307 CN200620125307 CN 200620125307 CN 200620125307 U CN200620125307 U CN 200620125307U CN 200978692 Y CN200978692 Y CN 200978692Y
- Authority
- CN
- China
- Prior art keywords
- oil
- crank
- engine
- room
- machine oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000003921 oil Substances 0.000 claims abstract description 30
- 230000001050 lubricating effect Effects 0.000 claims abstract description 5
- 239000010721 machine oil Substances 0.000 claims description 33
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 6
- 239000003546 flue gas Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000010705 motor oil Substances 0.000 abstract description 7
- 238000011982 device technology Methods 0.000 abstract 1
- 239000003595 mist Substances 0.000 description 9
- 238000010304 firing Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000002950 deficient Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007514 turning Methods 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000010711 gasoline engine oil Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Landscapes
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to a micro reciprocating four-stroke cycle engine belong to the power device technology field. The utility model is mainly that a crank case and a left bearing block combine to form a crank room. A left case cover and the crank case combine to form an engine oil container, the top of the cylinder and the cylinder cover make up a rocker arm room, characterized in that the engine oil container is communicated with crank room through an oil intake hole on the left end of the crank, the crank room is communicated with the crank room through an air hole, the crank room is connected to the engine oil container through an oil return hole on the bottom of the crank case, the engine oil is separated from the crank room by the left bearing block. The utility model has a simple, compact and reasonable structure, is capable of making the oil lubricating system circulate automatically without an engine oil pump, doesn't make the engine oil overflow into the combustor even if the petrol engine turns 360 degrees or is inverted in work, has advantages of fuel-efficient, less faults, less noises, low-emission and the like, meantime the carburetor utilizes the diaphragm type, the engine can be ensured normal oil supply in any state.
Description
Technical field
The utility model relates to a kind of Miniature Can Turning Four-stroke Gasoline Engine Round, specifically is used for the mating power of hand-held dynamic power machine, is widely used in horticultural machinery, building machinery and other family expenses apparatus, belongs to field of power equipment technology.
Background technique
The power that at present domestic and international hand-held dynamic power machine is disposed is except that electric tool, and the overwhelming majority is a two-stroke gasoline engine.This portable gasoline machine only the annual requirement of American market just above 1,000 ten thousand.Because the two-stroke gasoline engine oil consumption is high, defectives such as exhaust emission is serious, over past ten years, some leading companys have have successively researched and developed some microminiature four-stroke gasoline engines in the world, but owing to have problems, be not used widely so far and promoted at aspects such as performance, technology and manufacture costs.The four-stroke gasoline engine of Honda company design for example, its cylinder head, cylinder body and casing fuse, inboard wall of cylinder block electroplate and technology capability relatively poor, also increased manufacture cost, and axial dimension is bigger than normal.The exhaust vent of this petrol engine is located on the top cylinder head-shield, and the inversion time, part machine oil can overflow into Carburetor when longer, influenced the normal operation of motor.Also there are defectives such as engine overheat, burn oil and underpower in the four-stroke gasoline engine of this kind structure.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, thereby a kind of Miniature Can Turning Four-stroke Gasoline Engine Round is provided, and can make oil lubricating system automatic cycle under the situation of not using oil pump; Still can run well in the time of can doing 360 ° of revolutions, can not cause machine oil to overflow into the firing chamber; It also has that oil consumption is low, fault is few, noise is little and discharge excellent characteristics.
Main solution of the present utility model is achieved in that
The utility model mainly adopts crankcase body and left shaft holder combination back to form crankshaft room, left side case lid and crankcase body combination back form the machine oil reservoir compartment, the top of cylinder block and cowl hood are formed rocker arm chamber; rocker arm chamber communicates with cam chamber by the guide hole of two push rods; the machine oil reservoir compartment links to each other with crankshaft room by the oil-sucking hole of bent axle left end; crankshaft room links to each other with rocker arm chamber by vent; cam chamber links to each other with the machine oil reservoir compartment by the spill port of crankcase body bottom; machine oil reservoir compartment and crankshaft room are isolated by left shaft holder; even can make petrol engine turn round or be inverted for 360 ° when operation, can not cause machine oil to overflow into the firing chamber.
The utility model is provided with exhaust vent in the outside of crankcase body overhead cam chamber, communicate with empty filter by flue gas leading, exhaust vent is located at petrol engine neutral position part oil gas or oil droplet enters the sky filter simultaneously with waste gas and Carburetor influences normal operation can avoid petrol engine to be inverted the time.
Compared with the prior art the utility model has the following advantages:
The utility model is simple, compact and reasonable for structure; Under the situation of not using oil pump, can make oil lubricating system automatic cycle; When operation, make 360 ° of revolutions of petrol engine or inversion, can not cause machine oil to overflow into the firing chamber; It also has that oil consumption is low, fault is few, noise is little and discharge excellent characteristics, and Carburetor adopts diaphragm carburetor simultaneously, can both guarantee the fuel oil normal fuel injection under any state of motor.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2, Fig. 3 are the utility model lubricating oil circulation schematic representation.
Embodiment
Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:
The utility model mainly by crankcase body 1, spill port 2, machine oil reservoir compartment 3, left shaft holder 4, stir slurry oil 5, oil-sucking hole 6, bent axle 7, left case lid 8, connecting rod 9, cylinder block 10, piston 11, cowl hood 12, rocker arm chamber 13, push rod 14, flywheel 15, cam chamber 16, crankshaft room 17, vent 18, unidirectionally cut down 19, push rod guide hole 20, exhaust vent 21 and flue gas leading 22 etc. form.
The utility model main body is made up of crankcase body 1, left shaft holder 4, left case lid 8, cylinder block 10 and cowl hood 12 etc.It is crankshaft room 17 that crankcase body 1 and left shaft holder 4 combination backs form inner chamber, it is machine oil reservoir compartment 3 that left side case lid 8 and crankcase body 1 combination back form inner chamber, piston 11 is contained in the cylinder block 10, the top of cylinder block 10 and cowl hood 12 are formed rocker arm chamber 13, and rocker arm chamber 13 communicates with cam chamber 16 by the push rod guide hole 20 of two push rods 14; The oil lubricating system has the loop of one's own, machine oil reservoir compartment 3 links to each other with crankshaft room 17 by the oil-sucking hole 6 of bent axle 7 left ends, crankshaft room 17 links to each other with rocker arm chamber 13 by vent 18, cam chamber 16 links to each other with machine oil reservoir compartment 3 by the spill port 2 of crankcase body 1 bottom, machine oil reservoir compartment 3 and crankshaft room 17 are isolated by left shaft holder 4, even when operation, can make 360 ° of revolutions of petrol engine or inversion, can not cause machine oil to overflow into the firing chamber.
The crankcase body 1 of the utility model four-stroke gasoline engine is whole, and cylinder block 10 is separated with casing, is convenient to the cylinder block inwall like this and electroplates and process.Simultaneously increased ventilation flue improving radiating effect at the cylinder head windward side, the connecting bolt of casing and cylinder block has improved the manufacturability of machining and assembling by casing counter hanging upwards.The ball bearing of bent axle 7 one ends is bearing in the bearing hole on casing right side, the other end is bearing on the left shaft holder 4, the reason that left shaft holder is set is not interfered for crankshaft rod assembly can integral body be packed in the crankcase body, simultaneously crankshaft room 17 and machine oil reservoir compartment 3 are isolated, left shaft holder 4 outsides are left case lids 8, and the inner chamber of formation is machine oil reservoir compartment 3, this programme has suitably strengthened reservoir compartment's volume, to increase engine oil capacity, it is overheated to reduce machine oil, has also prolonged the blanking time that adds machine oil.
The material of cowl hood 12 changes aluminum casting into by nylon, can also not improve radiating effect because of cowl hood temperature distortion leakage of oil like this.Crankcase bottom is provided with machine oil spill port 2, coincide with the spill port of left shaft holder 4, make mist of oil and the smooth inhalation machine oil measure of oil droplet grease chamber 3 in the cam chamber 16, the outlet of spill port 2 is in the central position of left shaft holder 4, even 360 ° of revolutions of motor can not make machine oil blow back into spill port and cam chamber yet.Crankshaft room top has a vent 18 to be communicated with the rocker arm chamber at top.The top of through hole is provided with one-way valve 19 makes the oil gas in the rocker arm chamber can not blow back into crankshaft room.
The utility model is provided with exhaust vent 21 in the outside of crankcase body overhead cam chamber 16, communicate with empty filter by flue gas leading 22, exhaust vent 21 is located at petrol engine neutral position part oil gas or oil droplet enters the sky filter simultaneously with waste gas and Carburetor influences normal operation can avoid petrol engine to be inverted the time.This is because when engine operated, has small amount of exhaust gas and sees through piston ring and enter crankshaft room, causes crankshaft room's internal pressure to increase and influences the circulation of machine oil mist, and increased pressure also causes the leakage of oil of casing junction plane easily simultaneously.Usually exhaust outlet is arranged on the cowl hood, but this when motor is inverted the machine oil in the rocker arm chamber overflow into flue gas leading, directly enter sky filter and Carburetor.This programme is arranged on exhaust outlet on the casing of motor and has just avoided above-mentioned defective, and waste gas enters the sky filter and Carburetor directly burns through flue gas leading 22, has prevented the pollution to environment.
Flywheel 15 also is a cooling fan, and the utility model has suitably strengthened size, to increase cooling air quantity.Flywheel also is the power take-off of petrol engine simultaneously, can also can adopt the direct output power of bent axle coupling shaft by the clutch output power on the flywheel.
The utility model working principle and working procedure:
As shown in Figure 1 to Figure 3: when bent axle 7 rotations, machine oil paddle 5 rotates simultaneously and stirs machine oil, make the machine oil of reservoir compartment's 3 inner chambers produce mist of oil, when piston of gasoline engine 11 is up, crankshaft room 17 produces negative pressure, machine oil mist in the reservoir compartment is by crankshaft center oil-sucking hole 6, with mist of oil inspiration crankshaft room 17, to connecting bar and crankshaft assembly and piston lubrication.When descent of piston, because crankshaft room's volume is less, bigger pressure wave is arranged, the mist of oil in the crankshaft room is cut down 19 by oil-gas hole 18 outlet end unidirectional be pressed into rocker arm chamber 13, parts such as rocking arm, valve and push rod are lubricated.Because rocker arm chamber 13 links to each other with cam chamber by push rod guide hole 20.Therefore mist of oil also enters cam chamber simultaneously, has lubricated the parts such as cam, timing gear and tappet in the cam chamber.
Piston 11 can the generation negative pressure when last mist of oil of being about in the reservoir compartment sucks crankshaft room the reservoir compartment in.At this moment mist of oil and the oil droplet in the cam chamber can be drawn in the reservoir compartment by spill port 2, formed the circulatory system of lubricating oil.
Because the oil-sucking hole 6 of crankshaft center is in the center portion of reservoir compartment.Therefore, when 360 ° of revolutions of petrol engine or inversion, machine oil all is difficult for overflowing into oil-sucking hole.Even there is small part machine oil to enter crankshaft room, also can enter rocker arm chamber 13 very soon by vent 18, can not directly enter cylinder and firing chamber, still can guarantee normal working of engine.
Claims (3)
1, a kind of miniature rotary four-stroke gasoline engine, main crankcase body (1) and left shaft holder (4) the combination back of adopting forms crankshaft room (17), left side case lid (8) and crankcase body (1) combination back form machine oil reservoir compartment (3), the top of cylinder block (10) and cowl hood (12) are formed rocker arm chamber (13); rocker arm chamber (13) communicates with cam chamber (16) by the guide hole (20) of push rod (14); it is characterized in that the oil lubricating system has the loop of one's own; machine oil reservoir compartment (3) link to each other with crankshaft room (17) by the oil-sucking hole (6) of bent axle (7) left end; crankshaft room (17) links to each other with rocker arm chamber (13) by vent (18); cam chamber (16) links to each other with machine oil reservoir compartment (3) by the spill port (2) of crankcase body (1) bottom, and machine oil reservoir compartment (3) and crankshaft room (17) are isolated by left shaft holder (4).
2, miniature rotary four-stroke gasoline engine according to claim 1 is characterized in that the outside of described crankcase body overhead cam chamber (16) is provided with exhaust vent (21), communicates with empty filter by flue gas leading (22).
3, miniature rotary four-stroke gasoline engine according to claim 1 is characterized in that described cowl hood (12) adopts the aluminum casting material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620125307 CN200978692Y (en) | 2006-11-15 | 2006-11-15 | Mini rotary four-stroke gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620125307 CN200978692Y (en) | 2006-11-15 | 2006-11-15 | Mini rotary four-stroke gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200978692Y true CN200978692Y (en) | 2007-11-21 |
Family
ID=38979069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620125307 Expired - Lifetime CN200978692Y (en) | 2006-11-15 | 2006-11-15 | Mini rotary four-stroke gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200978692Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993927A (en) * | 2014-04-28 | 2014-08-20 | 浙江亚特电器有限公司 | Engine pulse air-oil lubrication system and method |
| WO2017156814A1 (en) * | 2016-03-18 | 2017-09-21 | 浙江亚特电器有限公司 | Quantitative unidirectional oil-air lubrication system and method for four-stroke engine |
-
2006
- 2006-11-15 CN CN 200620125307 patent/CN200978692Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993927A (en) * | 2014-04-28 | 2014-08-20 | 浙江亚特电器有限公司 | Engine pulse air-oil lubrication system and method |
| CN103993927B (en) * | 2014-04-28 | 2017-04-26 | 浙江亚特电器有限公司 | Engine pulse air-oil lubrication system and method |
| WO2017156814A1 (en) * | 2016-03-18 | 2017-09-21 | 浙江亚特电器有限公司 | Quantitative unidirectional oil-air 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuxi Worldbest Kama Power Co., Ltd. Assignor: Gu Qihua Contract fulfillment period: 2007.6.28 to 2016.11.15 Contract record no.: 2008320000691 Denomination of utility model: Mini rotary four-stroke gasoline engine Granted publication date: 20071121 License type: Exclusive license Record date: 20081009 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2007.6.28 TO 2016.11.15; CHANGE OF CONTRACT Name of requester: WUXI HUAYUANKAIMA ENGINE CO., LTD. Effective date: 20081009 |
|
| ASS | Succession or assignment of patent right |
Owner name: WUXI WORLDBEST KAMA POWER CO., LTD. Free format text: FORMER OWNER: GU QIHUA Effective date: 20110714 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 214101 WUXI LIJIN TECHNOLOGY CO., LTD., NO. 10, CHUNLIAN ROAD, DONGTING INDUSTRIAL PARK, XISHAN DISTRICT, WUXI CITY, JIANGSU PROVINCE TO: 214187 QIANXIANG VILLAGE, LUOSHE TOWN, HUISHAN DISTRICT, WUXI CITY, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110714 Address after: 214187 Jiangsu Province, Wuxi city Huishan District Luoshe Town Village money Patentee after: Wuxi Worldbest Kama Power Co., Ltd. Address before: 214101, Wuxi, Jiangsu province Xishan District Ting Ting Industrial Park, 10 spring festival Road, Wuxi Jin Jin Technology Co., Ltd. Patentee before: Gu Qihua |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071121 |
|
| EXPY | Termination of patent right or utility model |