CN203604043U - High-rotation-speed general gasoline engine - Google Patents
High-rotation-speed general gasoline engine Download PDFInfo
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- CN203604043U CN203604043U CN201320785892.1U CN201320785892U CN203604043U CN 203604043 U CN203604043 U CN 203604043U CN 201320785892 U CN201320785892 U CN 201320785892U CN 203604043 U CN203604043 U CN 203604043U
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- flywheel
- crankcase
- fixed
- cylinder head
- rotating speed
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Abstract
The utility model discloses a high-rotation-speed general gasoline engine. A charging coil is fixed at an input end of a crankcase and positioned on the inner side of a flywheel, a protrusion is formed on the outer circumferential surface of the flywheel, a trigger is fixed on the crankcase, and the gap of 0.7mm-0.8mm is reserved between the trigger and the protrusion of the flywheel. The high-rotation-speed general gasoline engine further comprises a throttle cable and a plunger type carburetor. By means of the throttle cable and the plunger type carburetor, engine rotation speed can be controlled directly. Under the condition of keeping the size unchanged, the purposes of light weight, simple structure and convenient maintenance are achieved. By increasing rotation speed and compression ratio and adopting variable ignition timing, power and torque are larger, fuel consumption is less at the same rotation speed, cost performance and additional value are improved greatly, and applicability and universality are strengthened.
Description
Technical field
The utility model relates to a kind of petrol engine, specifically, refers to a kind of high rotating speed general gasoline engines, belongs to general gasoline engines technical field.
Background technique
Small utility gasoline engine (being called for short logical machine) is little with volume, lightweight, simple in structure, cheap, and the advantages such as highly versatile, for various terminal machinery provides power output, are widely used in the various fields such as work, agriculture, gardens.The main parts size of logical machine comprises: crankcase, crankcase cover, bent axle, connecting rod assembly, piston, wrist pin, piston ring, cam, tappet, push rod, valve rocker combination, inlet and outlet door, cylinder head, cylinder head cover, the compositions such as speed regulator, speed-regulating controller, Carburetor, air filter, silencing apparatus, flywheel, flywheel fan, starting cup, kick-starter, spark coil, spark plug.Wherein crankcase cover is positioned at a side of crankcase, and both open-mouth ends match and form inner cavity chamber, and bent axle is placed in inner cavity chamber, and wherein the input end of bent axle is connected with crankcase, and output terminal is connected with crankcase cover.One end of connecting rod assembly is connected with the crank pin of bent axle, and one end is connected with wrist pin, and wrist pin is connected with piston again, and piston is placed in the cylinder liner of crankcase.Cam, tappet are placed in inner cavity chamber.Cylinder head is fixed on the cylinder head attachment face of crankcase, and inlet and outlet door is by valve spring, and cotter seat is fixed in cylinder head.Valve rocker is fixed in cylinder head, and valve rocker is connected with tappet by push rod.Spark plug, cylinder head cover are fixed on cylinder head.The intake duct of cylinder head connects Carburetor, and air outlet flue connects silencing apparatus.Speed regulator is placed in inner cavity chamber, is fixed on crankcase.Speed-regulating controller is connected speed regulator with Carburetor.Flywheel is fixed on the input end of bent axle, and flywheel fan and starting cup are fixed on flywheel, and kick-starter is fixed on crankcase.Spark coil is fixed on crankcase, and wherein relative connection of magnetic shoe of magnetic steel plate and the cylindrical of flywheel, the spark plug cap of the other end is fixed on spark plug, connects between the two by high voltage wire.
In order to improve the power character of motor, do not changing motor volume, on the basis of working forms and discharge capacity, the most effective mode is exactly to improve rotating speed, the increasing compression ratio of motor, improves indicated work and the thermal efficiency that the motor unit time does.The deficiency of current existing petrol engine is:
1. because existing logical machine is to rely on speed regulator control accelerator open degree, rotating speed is generally no more than 4000 revs/min.And speed regulator is to rely on the rotation of bent axle to move, so logical machine can be regarded automatic speed regulation motor as, if operator will improve engine speed, be limited by the defect of speed-adjusting and control system, speed control coupling is comparatively complicated, is difficult for accurate control engine rotating speed, and dumb.
2. logical machine Carburetor is valve plate-type Carburetor, and the stroke of accelerator open degree is shorter, is unfavorable for telecontrol.
3. ferrous flywheel adopts casting technique, and when improving after rotating speed, casting defect can cause flywheel to burst, and affects the reliability of motor.
4. electronic spark advance angular region is less.When the rotation of kick-starter traction flywheel, the homopolar magnet on flywheel causes the magnetic flux change in ignition coil iron core, thereby produces in coil voltage, makes spark plug electric discharge through high pressure packet.Shortcoming is that the angle (being mechanical ignition advance angle) of iron core cutting magnetic induction line is limited in scope, and is generally 10 ° ± 2 °.When improving after engine speed, each work condition range of motor strengthens, because the Optimum spark advance angle of motor is not definite value, so electronic spark advance angular region also will increase.As less in scope, firing time excessively late, when motor is in expansion space stroke flame also burning, this can reduce the performance at the each operating mode of motor place.
5, the compression ratio of existing logical machine is not enough to the thermal efficiency of the mixture combustion that produces enough compression stroke ends of a period, therefore needed power character can not be provided.
Summary of the invention
For prior art above shortcomings, the purpose of this utility model is to provide a kind of compact structure, high rotating speed, meets general gasoline engines high-power, high pulling torque needs.
To achieve these goals, the technical solution adopted in the utility model is such:
A kind of high rotating speed general gasoline engines, comprises crankcase, crankcase cover, bent axle, connecting rod assembly, piston, wrist pin, cam, tappet, push rod, valve rocker, intake valve, exhaust valve, cylinder head, cylinder head cover, Carburetor, silencing apparatus, flywheel, flywheel fan, starting cup, kick-starter, spark coil, charge coil, trigger and spark plug;
Crankcase cover is positioned at a side of crankcase, and both open-mouth ends match and form inner cavity chamber, and bent axle is placed in inner cavity chamber, and the input end of bent axle is connected with crankcase, and the output terminal of bent axle is connected with crankcase cover; One end of connecting rod assembly is connected with the crank pin of bent axle, and the other end is connected with wrist pin, and wrist pin is connected with piston again, and piston is placed in the cylinder liner of crankcase; Cam and tappet are placed in inner cavity chamber; Cylinder head is fixed on the cylinder head attachment face of crankcase, and intake valve and exhaust valve are fixed in cylinder head by corresponding valve spring and cotter seat respectively; Valve rocker is fixed in cylinder head and by push rod and is connected with tappet; Spark plug, cylinder head cover are fixed on cylinder head; The intake duct of cylinder head connects Carburetor, and air outlet flue connects silencing apparatus; Flywheel is fixed on the input end of bent axle, and flywheel fan and starting cup are fixed on flywheel, and kick-starter and spark coil are fixed on crankcase; It is characterized in that: described charge coil is fixed on the input end of crankcase and is positioned at flywheel the inside, and flywheel outer peripheral surface is provided with convex closure, and trigger is fixed on crankcase, and trigger and flywheel convex closure gap are 0.7mm-0.8mm.
Described convex closure is 28mm along the length on circumference.
Described flywheel material is punching press iron.
This high rotating speed general gasoline engines also comprises throttle cable, described Carburetor is plunger type carburetor, plunger type carburetor comprises Carburetor body, plunger, Returnning spring, spindle and main jet pipe, plunger is arranged on Carburetor body, plunger has a receiving cavity, Returnning spring is positioned at receiving cavity, spindle upper end enters receiving cavity from plunger bottom, spindle upper end is provided with spring seat, throttle cable enters plunger receiving cavity and is connected with the spring seat in receiving cavity from plunger upper end, spindle lower end is tapering and is positioned at main jet pipe, spindle is positioned at main jet pipe different depth, thereby both gaps difference forms different Carburetor apertures.
Described flywheel magnet is 4-6 level, preferably 5 grades.
Piston-top surface is plane.
Wherein, cylinder axis axis becomes 25 ° of angles with crankshaft center axis; Trigger central axis becomes 17 ° of angles with cylinder axis axis.
Compared to existing technology, the utlity model has following beneficial effect:
1. by throttle cable and directly control engine rotating speed of plunger type carburetor, the working speed of motor is 1500 revs/min to 8500 revs/min, reaches as high as 9000 revs/min.By changing piston-top surface into plane, change combustion chamber volume, improve the compression of motor by 8.5:1 to 10:1.By improving engine speed and compression ratio, discharge capacity is that the general gasoline engines peak output of 200ml can be brought up to 8.1 kW by 3.8 kW, Maximum Torque can be brought up to 13.7Nm by 10.6Nm, and guarantees that motor all has powerful power character and enough reliabilities in 1500rpm～8500rpm speed range.
2. change casting iron flywheel into punching press iron flywheel, when improving after rotating speed, flywheel still can reliably working.
3. the setting of charge coil and trigger, makes structure compacter, can reduce motor volume.
4. the scope of ignition advance angle is increased to 20 ° ± 2 °.After engine speed improves, more wide in range angular range, can make different operating points light a fire by time, guarantees power character and the Economy of motor in each operating mode.
5, cylinder axis axis becomes 25 ° of angles with crankshaft center axis.Trigger central axis becomes 17 ° of angles with cylinder axis axis.Flywheel is placed in to the input end of engine crankshaft, object is to keep engine structure compactness, and connection and reasonable arrangement, is easy to remove and repair.
In a word, the high rotating speed general gasoline engines that the application proposes, in the situation that keeping constancy of volume, by increasing the intensity of part component, has realized weight lighter, object simple in structure, easy to maintenance.By improving rotating speed and compression ratio, the variable time of ignition of employing, to realize more powerfully, moment of torsion is larger, realize under equal rotating speed oil consumption lower, cost performance and added value promote greatly, and applicability and versatility are strengthened, not only meet original supporting terminal, but also expanded using scope.
Accompanying drawing explanation
Fig. 1-the utility model structural representation.
Fig. 2-the utility model plunger type carburetor structural representation.
Fig. 3-the utility model piston structure schematic diagram.
Fig. 4-the utility model cylinder and bent axle and toggle position are related to schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Technical problem to be solved in the utility model is to provide one to meet high rotating speed general-purpose petrol engine, its concrete structure can be simultaneously referring to Fig. 1, from scheming, can find out, this petrolic crankcase cover 2 is positioned at a side of crankcase 1, both open-mouth ends match and form inner cavity chamber, bent axle 3 is placed in inner cavity chamber, and wherein the input end of bent axle is connected with crankcase, and output terminal is connected with crankcase cover.Connecting rod cap and the connnecting rod big end of connecting rod assembly 4 are built-in with connecting rod bearing shell, and connecting rod bearing shell is connected with the crank pin of bent axle, and connecting rod small end is connected with wrist pin, and wrist pin is connected with piston again, and piston is placed in the cylinder liner of crankcase.Cam, tappet are placed in inner cavity chamber.Cylinder head 5 is fixed on the cylinder head attachment face of crankcase, and inlet and outlet door 13,14 is fixed in cylinder head 5 by valve spring and cotter seat respectively.Valve rocker is fixed in cylinder head, and valve rocker is connected with tappet by push rod.Spark plug, cylinder head cover are fixed on cylinder head.The intake duct of cylinder head connects Carburetor 7, and air outlet flue connects silencing apparatus.Flywheel 8 is fixed on the input end of bent axle 3, and flywheel fan 11 and starting cup are fixed on flywheel; Kick-starter 12 and spark coil are fixed on crankcase.
Main innovate point of the present utility model is:
1, cancel automatic speed regulation mechanism, and adopt plunger type carburetor and coordinate throttle cable 15 to improve rotating speed.Plunger type carburetor structure is shown in Fig. 2, comprise Carburetor body 16, plunger 17, Returnning spring 18, spindle 20 and main jet pipe 21, plunger 17 is arranged on Carburetor body 16, plunger 17 has a receiving cavity, Returnning spring 18 is positioned at receiving cavity, spindle 20 upper ends enter receiving cavity from plunger bottom, spindle upper end is provided with spring seat, throttle cable 15 enters plunger receiving cavity and is connected with the spring seat in receiving cavity from plunger upper end, spindle 20 lower ends are tapering and are positioned at main jet pipe 21, spindle 20 is positioned at main jet pipe 21 different depths, thereby both gaps difference forms different Carburetor apertures.By throttle cable and directly control engine rotating speed of plunger type carburetor, the working speed of motor is 1500 revs/min to 8500 revs/min, reaches as high as 9000 revs/min.By improving engine speed, maximum power can be brought up to 8.1 kW by 3.8 kW, Maximum Torque can be brought up to 13.7Nm by 10.6Nm, and guarantees that motor all has powerful power character and enough reliabilities in 1500rpm～8500rpm speed range.
2, change casting iron flywheel into punching press iron flywheel, like this when improving after rotating speed, punching press flywheel still can reliably working, there will not be casting defect to cause flywheel to burst.
3, referring to Fig. 1, described charge coil 9 is fixed on the input end of crankcase 1 and is positioned at flywheel 8 the insides, and flywheel 8 outer peripheral surfaces are provided with convex closure 19, and trigger 10 is fixed on crankcase 1, and trigger 10 is 0.7mm-0.8mm with flywheel convex closure 19 gaps.Flywheel magnet is 4-6 level, preferably 5 grades.Described convex closure is 28mm along the length on circumference.The utility model ignition system increases the component such as voltage stabilizer, igniter, principal wire bundle, be assemblied on engine crankcase or terminal unit on.The utility model does not do specific requirement to voltage stabilizer, igniter and principal wire bundle rigging position.The setting of charge coil and trigger, makes this petrol engine structure compacter, can reduce its volume.
4, the scope of ignition advance angle is increased to 20 ° ± 2 °.After engine speed improves, more wide in range angular range, can make different operating points light a fire by time, guarantees power character and the Economy of motor in each operating mode.
5, piston-top surface changes plane into, sees Fig. 3.
6, cylinder axis axis becomes 25 ° of angles with crankshaft center axis; Trigger central axis becomes 17 ° of angles with cylinder axis axis, see Fig. 4.
By above-mentioned improvement, the parameters of this high rotating speed general-purpose petrol engine is improved significantly.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (8)
1. a high rotating speed general gasoline engines, comprises crankcase, crankcase cover, bent axle, connecting rod assembly, piston, wrist pin, cam, tappet, push rod, valve rocker, intake valve, exhaust valve, cylinder head, cylinder head cover, Carburetor, flywheel, flywheel fan, starting cup, kick-starter, spark coil, charge coil, trigger and spark plug;
Crankcase cover is positioned at a side of crankcase, and both open-mouth ends match and form inner cavity chamber, and bent axle is placed in inner cavity chamber, and the input end of bent axle is connected with crankcase, and the output terminal of bent axle is connected with crankcase cover; One end of connecting rod assembly is connected with the crank pin of bent axle, and the other end is connected with wrist pin, and wrist pin is connected with piston again, and piston is placed in the cylinder liner of crankcase; Cam and tappet are placed in inner cavity chamber; Cylinder head is fixed on the cylinder head attachment face of crankcase, and intake valve and exhaust valve are fixed in cylinder head by corresponding valve spring and cotter seat respectively; Valve rocker is fixed in cylinder head and by push rod and is connected with tappet; Spark plug, cylinder head cover are fixed on cylinder head; The intake duct of cylinder head connects Carburetor, and air outlet flue connects silencing apparatus; Flywheel is fixed on the input end of bent axle, and flywheel fan and starting cup are fixed on flywheel, and kick-starter and spark coil are fixed on crankcase; It is characterized in that: described charge coil is fixed on the input end of crankcase and is positioned at flywheel the inside, and flywheel outer peripheral surface is provided with convex closure, and trigger is fixed on crankcase, and trigger and flywheel convex closure gap are 0.7mm-0.8mm.
2. high rotating speed general gasoline engines according to claim 1, is characterized in that: described convex closure is 28mm along the length on circumference.
3. high rotating speed general gasoline engines according to claim 1, is characterized in that: described flywheel material is punching press iron.
4. high rotating speed general gasoline engines according to claim 1, it is characterized in that: this high rotating speed general gasoline engines also comprises throttle cable, described Carburetor is plunger type carburetor, plunger type carburetor comprises Carburetor body, plunger, Returnning spring, spindle and main jet pipe, plunger is arranged on Carburetor body, plunger has a receiving cavity, Returnning spring is positioned at receiving cavity, spindle upper end enters receiving cavity from plunger bottom, spindle upper end is provided with spring seat, throttle cable enters plunger receiving cavity and is connected with the spring seat in receiving cavity from plunger upper end, spindle lower end is tapering and is positioned at main jet pipe, spindle is positioned at main jet pipe different depth, thereby both gaps difference forms different Carburetor apertures.
5. according to the arbitrary described high rotating speed general gasoline engines of claim 1-4, it is characterized in that: described flywheel magnet is 4-6 level.
6. high rotating speed general gasoline engines according to claim 5, is characterized in that: described flywheel magnet is 5 grades.
7. high rotating speed general gasoline engines according to claim 6, is characterized in that: piston-top surface is plane.
8. high rotating speed general gasoline engines according to claim 7, is characterized in that: cylinder axis axis becomes 25 ° of angles with crankshaft center axis; Trigger central axis becomes 17 ° of angles with cylinder axis axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320785892.1U CN203604043U (en) | 2013-12-04 | 2013-12-04 | High-rotation-speed general gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320785892.1U CN203604043U (en) | 2013-12-04 | 2013-12-04 | High-rotation-speed general gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203604043U true CN203604043U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320785892.1U Expired - Fee Related CN203604043U (en) | 2013-12-04 | 2013-12-04 | High-rotation-speed general gasoline engine |
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| Country | Link |
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| CN (1) | CN203604043U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670700A (en) * | 2013-12-04 | 2014-03-26 | 力帆实业(集团)股份有限公司 | High-revolution general gasoline engine |
| CN107939521A (en) * | 2016-10-13 | 2018-04-20 | 浙江派尼尔科技股份有限公司 | Two-stroke flat twin |
-
2013
- 2013-12-04 CN CN201320785892.1U patent/CN203604043U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670700A (en) * | 2013-12-04 | 2014-03-26 | 力帆实业(集团)股份有限公司 | High-revolution general gasoline engine |
| CN103670700B (en) * | 2013-12-04 | 2016-07-06 | 力帆实业(集团)股份有限公司 | High rotating speed general gasoline engines |
| CN107939521A (en) * | 2016-10-13 | 2018-04-20 | 浙江派尼尔科技股份有限公司 | Two-stroke flat twin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20191204 |