CN207554190U - The four-stroke gasoline engine for being burnt and being lubricated with two-stroke gasoline engine fuel - Google Patents
The four-stroke gasoline engine for being burnt and being lubricated with two-stroke gasoline engine fuel Download PDFInfo
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- CN207554190U CN207554190U CN201721254953.6U CN201721254953U CN207554190U CN 207554190 U CN207554190 U CN 207554190U CN 201721254953 U CN201721254953 U CN 201721254953U CN 207554190 U CN207554190 U CN 207554190U
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Abstract
This application discloses a kind of four-stroke gasoline engines for being burnt and being lubricated with two-stroke gasoline engine fuel, belong to four-stroke gasoline engine field, for four-stroke gasoline engine, wherein crankcase chamber B includes cylinder block, the inside of cylinder block is equipped with bent axle, crankshaft-link rod is installed, the both sides of crankshaft-link rod are separately installed with left crankcase and right crankcase, and piston is equipped in the end of crankshaft-link rod on bent axle；Check valve is installed at the link position of crankcase chamber B and cavaera A；The inside of cylinder head casing in cavaera A is equipped with camshaft, driving rocking arm and valve combination, and driving rocking arm is located on camshaft and connection is combined with valve.It is incomplete that it can solve two-stroke gasoline engine scavenging, it burns insufficient, the problem of discharge difference, also conventional, four-stroke gasoline engine can be solved the problems, such as due to there are volume caused by oil storage pool is big, weight is big, having both small, light-weight, simple and convenient operation and maintenance and the advantages of the burning fully discharge feature of environmental protection is high, low noise.
Description
Technical field
The utility model belongs to four-stroke gasoline engine field, specifically, more particularly to a kind of hand-held for below 80mL
The four-stroke gasoline engine for being burnt and being lubricated with two-stroke gasoline engine fuel of four-stroke gasoline engine.
Background technology
Mostly existing four-stroke gasoline engine lubrication is to use in crankcase to have special lubricating oil bath, using splashing or is forced
Mode is lubricated the friction of motion pair of gasoline engine, using this lubricating system due to there is special oil sump, increases gasoline
The volume and weight of machine, simultaneously because the limitation of this lubrication system, causes the use state of gasoline engine to be limited, it is impossible to carry out
It significantly tilts and overturns.
Such as a kind of hand four stroke engine is disclosed in the Chinese patent application of Publication No. CN102230406B
Lubricating system, engine block is interior to be provided with a crankcase chamber, a valve distributor chamber and a rotary valve, which includes valve pocket
And valve shaft, the valve pocket are an entirety with crankcase, valve shaft is crankpin, and the outlet of the oil discharge passage is arranged on song
At the axle journal of arbor.Oil discharge passage and drainback passage are directly designed on crankcase and is designed using crank axle and crankcase
Rotary valve, it is whole due to there are accumulator and the structures such as Oil-gas Separation room and rotary valve although having saved the inner space of engine
Still complicated and lubricant effect is poor in the complete machine structure of gasoline engine for machine, and weight is bigger than normal to be unfavorable for hand-held operation and manufacture cost increasing
Add.
Additionally, due to using lubricating oil is added in crankcase, during use, lubricating oil can be consumed constantly,
So often to pay attention to checking the remaining situation of lubricating oil in daily maintenance, it will appear lubrication if checking that addition is not in place
Oil consumption excessively causes gasoline engine scuffing of cylinder bore to damage phenomenon.Due to increasing for current check maintenance times, also virtually increasing makes
With the workload of personnel.
Utility model content
The purpose of this utility model is to provide a kind of four strokes for being burnt and being lubricated with two-stroke gasoline engine fuel
Gasoline engine can solve the problem of two-stroke gasoline engine scavenging is incomplete, and burning is insufficient, and discharge is poor, can also solve to pass
System four-stroke gasoline engine is since there are the problem of volume caused by oil storage pool is big, weight is big, have both small, light-weight, operation
The advantages of easy maintenance and the abundant discharge feature of environmental protection height of burning, low noise.
In order to achieve the above objectives, the utility model is achieved through the following technical solutions：
A kind of four-stroke gasoline engine for being burnt and being lubricated with two-stroke gasoline engine fuel includes at least cavaera A
It is located at the top of crankcase B with crankcase chamber B, cavaera A, the crankcase chamber B includes cylinder block, in the crankshaft room of cylinder block
Bent axle is installed, crankshaft-link rod is installed on bent axle, the both sides of crankshaft-link rod and bent axle are separately installed with left crankcase and right song
Axle box is equipped with piston in the end of crankshaft-link rod；It is equipped at the link position of the crankcase chamber B and cavaera A unidirectional
Valve；The cavaera A includes the cavity that cylinder head casing, cylinder head and cylinder block connect and compose, and is installed in the inside of cylinder head casing
There are camshaft, driving rocking arm and valve combination, driving rocking arm is located on camshaft and connection is combined with valve.
Further speaking, spark plug, the firing tip position of spark plug are also equipped in the cylinder head described in the utility model
In the top of piston top dead center.
Further speaking, cylinder block air inlet is provided on the cylinder block described in the utility model, cylinder block air inlet leads to
Carburetor is crossed to connect with air filter and fuel tank respectively.
Further speaking, the valve combination described in the utility model includes exhaust valve and inlet valve, exhaust valve and air inlet
Door is respectively arranged on driving rocking arm.
Further speaking, driving pulley is installed, driving pulley passes through timing skin on the bent axle described in the utility model
Band is connect with driven pulley, and driven pulley is located on camshaft.
Further speaking, cylinder cover air intake duct, cylinder cover air inlet are additionally provided in the cavaera A described in the utility model
Road is connect with combustion chamber, and combustion chamber is located at piston top dead center.
A kind of fuel combination of four-stroke gasoline engine for being burnt and being lubricated with two-stroke gasoline engine fuel, it is described
Fuel combination volume uses proportioning as 50:1 gasoline and the fuel combination of two-stroke lubricating oils.
Compared with prior art, the beneficial effects of the utility model are：
1st, the application use air inlet, compression, acting, exhaust four strokes during, gaseous mixture for air, gasoline with
The mixture of two-stroke lubricating oils, it is incomplete to efficiently solve two-stroke gasoline engine scavenging, and burning is insufficient, discharges big ask
Topic.
2nd, the application four-stroke gasoline engine is enabled to have two-stroke gasoline engine is small, light-weight, Operation and Maintenance is simple
Just the advantages of, and cause the advantages of four-stroke gasoline engine burning is abundant, emission performance is superior, low noise.
Description of the drawings
Fig. 1 is the front view of the application.
Fig. 2 is the right view of the application.
In figure：1st, left crankcase；2nd, bent axle；3rd, driving pulley；4th, Timing Belt；5th, check valve；6th, cylinder block air inlet；
7th, rocking arm is driven；8th, camshaft；9th, driven pulley；10th, valve combines；11st, cylinder head casing；12nd, cylinder head；13rd, spark plug；
14th, piston；15th, cylinder block；16th, crankshaft-link rod；17th, right crankcase；18th, flywheel；19th, starter；20th, ignition coil；21st, disappear
Sound device；22nd, cylinder head exhaust duct；23rd, exhaust valve；24th, inlet valve；25th, cylinder head air intake duct；26th, combustion chamber；27th, carburetor；
28th, air filter；29th, oil pipe；30th, fuel tank.
Specific embodiment
Technical solution described herein is described further with reference to embodiment.
Embodiment 1：A kind of four-stroke gasoline engine for being burnt and being lubricated with two-stroke gasoline engine fuel, includes at least
Cavaera A and crankcase chamber B, cavaera A are located at the top of crankcase B, and the crankcase chamber B includes cylinder block 15, cylinder block
Bent axle 2 in 15 crankshaft room is installed, crankshaft-link rod 16 is installed on bent axle 2, the both sides of crankshaft-link rod 16 and bent axle 2 are pacified respectively
Equipped with left crankcase 1 and right crankcase 17, piston 14 is installed in the end of crankshaft-link rod 16；The crankcase chamber B and valve
Check valve 5 is installed at the link position of room A；The cavaera A is connected including cylinder head casing 11, cylinder head 12 and cylinder block 15
The cavity of composition is equipped with camshaft 8, driving rocking arm 7 and valve combination 10 in the inside of cylinder head casing 11, drives 7, rocking arm
It is connected in combining 10 on camshaft 8 and with valve.
Embodiment 2：A kind of four-stroke gasoline engine for being burnt and being lubricated with two-stroke gasoline engine fuel, wherein the gas
Spark plug 13 is also equipped on cylinder cap 12, the firing tip of spark plug 13 is located at the top of 14 top dead centre of piston.The cylinder block 15
On be provided with cylinder block air inlet 6, cylinder block air inlet 6 is connect by carburetor 27 with air filter 28 and fuel tank 30 respectively.Institute
It states valve combination 10 and includes exhaust valve 23 and inlet valve 24, exhaust valve 23 and inlet valve 24 are respectively arranged on driving rocking arm 7.Institute
It states and driving pulley 3 is installed on bent axle 2, driving pulley 3 is connect by Timing Belt 4 with driven pulley 9, and driven pulley 9 is located at
On camshaft 8.Cylinder cover air intake duct 25 is additionally provided in the cavaera A, cylinder cover air intake duct 25 is connect with combustion chamber 26, combustion
Room 26 is burnt to be located at 14 top dead centre of piston.Cylinder head exhaust duct 22 is connect by exhaust valve 23 with combustion chamber 26, muffler 21 with
Cylinder head exhaust duct 22 is connected.The structure of rest part is identical with the structure described in embodiment 1 and connection relation.
Embodiment 3：It is a kind of for the above-mentioned four-stroke gasoline engine for being burnt and being lubricated with two-stroke gasoline engine fuel
Fuel combination, wherein the fuel combination uses volume ratio as 50：1 gasoline and two-stroke lubricating oils is fired for the mixing of ratio
Material.
In view of above-described embodiment, the operation principle and mode of the application is as follows：
The application's is designed to provide a kind of four-stroke gasoline for being burnt and being lubricated with two-stroke gasoline engine fuel
Machine, wherein the two-stroke gasoline engine fuel refers to that volume ratio is 50：The mixing that 1 gasoline and two-stroke lubricating oils is formed
Fuel.Above-mentioned fuel combination is stored in fuel tank 30, and fuel tank 30 is entered by oil pipe 29 in carburetor 27.Burning needs
Air by air filter 28 filtering after likewise enter carburetor 27, form gaseous mixture in carburetor 27 with fuel combination.
Starter 19 is pulled, the piston 14 of four-stroke gasoline engine from lower dead center to top dead centre during running, crankcase chamber B inner bodies
Product increase, forms negative pressure.At this point, check valve 5 is closed, in piston 14 continues up operational process, piston 14 opens cylinder block
Air inlet 6.At this point, the gaseous mixture in carburetor 27 is entered by cylinder block air inlet 6 in crankcase chamber B, to being located at
Left crankcase 1, crankshaft-link rod 16 and right crankcase 17 and associated bearings in crankcase chamber B carry out effectively lubricating.
During the piston 14 of gasoline engine is run from top dead centre to lower dead center, piston 14 can be by cylinder block air inlet 6
It closes, crankcase B inner volumes reduce, and form positive pressure.At this point, check valve 5 is opened, the gaseous mixture in crankcase chamber B passes through
Check valve 5 is entered in cavaera A.Due to containing two-stroke lubricating oils in gaseous mixture, can to valve indoor driving rocking arm
7th, camshaft 8, valve combination 10 and its associated bearings carry out effectively lubricating.
The course of work of four-stroke gasoline engine includes air inlet, compression, acting, exhaust Four processes.Wherein bent axle 2 is rotating
Process summarize, driven pulley 9 is driven by driving pulley 3 on bent axle 2, Timing Belt 4, driven pulley 9 is located at camshaft 8
On, camshaft 8 realizes the rotation of driving rocking arm 7 under the rotation of driven pulley 9, drives molded line control of the rocking arm 7 according to camshaft
Opening and the closing of inlet valve 24 and exhaust valve 23 processed.
In the intake process of four-stroke gasoline engine, exhaust valve 23 is closed, and inlet valve 24 is opened, piston 14 from top dead centre to
Lower dead center is run.Piston 14 closes cylinder block air inlet 6 during downward operation and forms positive pressure in crankcase B.
At this point, check valve 5 is opened, the gaseous mixture containing lubricating oil is entered by crankcase B in cavaera A by check valve, to valve
Each component and parts in the A of room are lubricated.After the completion of lubrication, enter by the cylinder head air intake duct 25 in cavaera A
Into combustion chamber 26, induction stroke is completed.Direction shown in arrow is the gaseous mixture motion path in intake process in Fig. 1 and Fig. 2.
In the compression process of four-stroke gasoline engine, exhaust valve 23 is closed, and inlet valve 24 is closed, piston 14 from lower dead center to
Top dead centre moves, and compressed action is carried out to being located at the gaseous mixture inside combustion chamber 26.At this point, the volume increase in crankcase B, bent
Negative pressure is formed by positive pressure in axle box B so that check valve 5 is closed, and drives cylinder block during piston 14 moves upwards
Air inlet 6 is opened.Gaseous mixture inside carburetor 27 is entered in crankcase B to left crankcase 1, the song in crankcase B
Axis connecting rod 16 and right crankcase 17 and associated bearings carry out effectively lubricating.Above-mentioned action process completes the pressure of four-stroke gasoline engine
Contracting stroke.
In the expansion stroke of four-stroke gasoline engine, exhaust valve 23 and inlet valve 24 are turned off, by flywheel 18 and ignition lead
Circle 20 forms high-voltage electricity and passes through spark plug 13 and lights a fire so that the mixture combustion acting in combustion chamber 26, band piston
14 downlinks.Cylinder block air inlet 6 is closed during 14 downlink of piston, crankcase B spaces become smaller, and pressure rise forms positive pressure, band
Dynamic check valve 5 is opened.After check valve 5 is opened, gaseous mixture enters cavaera A, gaseous mixture pair by crankcase B by check valve 5
Parts in cavaera A are lubricated, and complete expansion stroke.
In the expansion stroke of four-stroke gasoline engine, air bleeding valve 23 is opened, and inlet valve 24 is closed, on the piston 14 of gasoline engine
Row discharges the exhaust gas generated after burning in combustion chamber 26 by cylinder head exhaust duct 22 by muffler 21.Piston 14
Uplink the volume in crankcase chamber B is increased, formed volume increase to form negative pressure.At this point, check valve 5 is closed, and living
The uplink of plug 14 drives cylinder block air inlet 6 to open, and the gaseous mixture in carburetor 27 is entered in crankcase B in it
The parts in portion carry out effectively lubricating, complete exhaust stroke effect.
In this application, the four-stroke gasoline engine is in four stroke operations for completing air inlet, compression, acting and exhaust
In, twice, twice, 26 air inlet of combustion chamber is primary for cavaera A air inlets for crankcase chamber B air inlets.Crankcase chamber B and cavaera A air inlets
It can effectively ensure that the parts in the two cavitys are under effective lubricating status twice.Meanwhile in combustion chamber 26
Intake process in, cavaera A has air inlet twice, improves the volumetric efficiency in four-stroke gasoline engine, is effectively improved burning, carries
The power of high gasoline engine.
In this application, the two-stroke gasoline engine volume of fuel of use is according to 50：1 ratio is lubricated with two-stroke gasoline engine
Oil mixes, and above-mentioned fuel combination can ensure the normal work of four-stroke gasoline engine, and can ensure four-stroke gasoline engine
In each parts normal lubrication, reduce caused by oil storage pool is separately provided in four-stroke gasoline engine that volume is big, weight is big asks
Topic, convenient for reducing the volume and weight of four-stroke gasoline engine.Simultaneously as it does not need to examine the oil level in oil storage pool
It looks into, convenient operating maintenance.Since air inflow is big, volumetric efficiency is high, helps to improve and burn, improves the power and drop of gasoline engine
Low emission gas, low noise.
Claims (6)
1. a kind of four-stroke gasoline engine for being burnt and being lubricated with two-stroke gasoline engine fuel, include at least cavaera A and
Crankcase chamber B, cavaera A are located at the top of crankcase B, it is characterised in that：The crankcase chamber B includes cylinder block（15）, vapour
Cylinder body（15）Crankshaft room in bent axle is installed（2）, bent axle（2）On crankshaft-link rod is installed（16）, crankshaft-link rod（16）And song
Axis（2）Both sides be separately installed with left crankcase（1）And right crankcase（17）, in crankshaft-link rod（16）End piston is installed
（14）；Check valve is installed at the link position of the crankcase chamber B and cavaera A（5）；The cavaera A includes cylinder cover
Cover（11）, cylinder head（12）And cylinder block（15）The cavity connected and composed, in cylinder head casing（11）Inside camshaft is installed
（8）, driving rocking arm（7）It is combined with valve（10）, drive rocking arm（7）Positioned at camshaft（8）Above and with valve combine（10）Connection.
2. the four-stroke gasoline engine according to claim 1 for being burnt and being lubricated with two-stroke gasoline engine fuel, special
Sign is：The cylinder head（12）On be also equipped with spark plug（13）, spark plug（13）Firing tip be located at piston（14）It is upper to stop
The top of point.
3. the four-stroke gasoline engine according to claim 1 for being burnt and being lubricated with two-stroke gasoline engine fuel, special
Sign is：The cylinder block（15）On be provided with cylinder block air inlet（6）, cylinder block air inlet（6）Pass through carburetor（27）Respectively
With air filter（28）And fuel tank（30）Connection.
4. the four-stroke gasoline engine according to claim 1 for being burnt and being lubricated with two-stroke gasoline engine fuel, special
Sign is：The valve combination（10）Including exhaust valve（23）And inlet valve（24）, exhaust valve（23）And inlet valve（24）Respectively
It is installed on driving rocking arm（7）On.
5. the four-stroke gasoline engine according to claim 1 for being burnt and being lubricated with two-stroke gasoline engine fuel, special
Sign is：The bent axle（2）On driving pulley is installed（3）, driving pulley（3）Pass through Timing Belt（4）With driven pulley（9）
Connection, driven pulley（9）Positioned at camshaft（8）On.
6. the four-stroke gasoline engine according to claim 1 for being burnt and being lubricated with two-stroke gasoline engine fuel, special
Sign is：Cylinder cover air intake duct is additionally provided in the cavaera A（25）, cylinder cover air intake duct（25）With combustion chamber（26）Even
It connects, combustion chamber（26）Positioned at piston（14）At top dead centre.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721254953.6U CN207554190U (en) | 2017-09-28 | 2017-09-28 | The four-stroke gasoline engine for being burnt and being lubricated with two-stroke gasoline engine fuel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721254953.6U CN207554190U (en) | 2017-09-28 | 2017-09-28 | The four-stroke gasoline engine for being burnt and being lubricated with two-stroke gasoline engine fuel |
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| CN207554190U true CN207554190U (en) | 2018-06-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676173A (en) * | 2017-09-28 | 2018-02-09 | 山东华盛中天机械集团股份有限公司 | The four-stroke gasoline engine for being burnt and being lubricated with two-stroke gasoline engine fuel |
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2017
- 2017-09-28 CN CN201721254953.6U patent/CN207554190U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676173A (en) * | 2017-09-28 | 2018-02-09 | 山东华盛中天机械集团股份有限公司 | The four-stroke gasoline engine for being burnt and being lubricated with two-stroke gasoline engine fuel |
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