CN204099043U - A kind of two stroke IC engine - Google Patents
A kind of two stroke IC engine Download PDFInfo
- Publication number
- CN204099043U CN204099043U CN201420535435.1U CN201420535435U CN204099043U CN 204099043 U CN204099043 U CN 204099043U CN 201420535435 U CN201420535435 U CN 201420535435U CN 204099043 U CN204099043 U CN 204099043U
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- CN
- China
- Prior art keywords
- water conservancy
- conservancy diversion
- diversion fin
- fin
- stroke
- 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.)
- Withdrawn - After Issue
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The utility model relates to a kind of two stroke IC engine, and solve the technical problem that part unburned mixed steam is directly discharged and discharged together with waste gas, internal combustion engine lubrication well improves useful horsepower, extends internal-combustion engine life-span simultaneously.This two stroke IC engine comprises and blocks fin (1) and escape groove (2), blocking fin (1) is rectangular configuration, blocking fin (1) is fixed in cylinder head (3), block fin (1) along cylinder head diametric(al), and be positioned between intake duct (8) and air outlet flue (9), block fin (1) intake duct (8) and air outlet flue (9) are separated, block fin (1) upper end and oil sprayer jet corresponding position arranges horizontal groove (12), escape groove (2) is arranged on piston (5), escape groove (2) is positioned at firing chamber (10) center, and the position of escape groove (2) is corresponding with the position of blocking fin (1).
Description
Technical field
The utility model belongs to combustion chambers of internal combustion engines technical field, is specifically related to a kind of two stroke IC engine.
Background technique
Tradition two stroke IC engine generally includes cylinder body and piston, suction port on tradition two stroke IC engine cylinder body, relief opening are arranged on cylinder wall bottom, relief opening and suction port location comparison near, cause scavenging short circuit, namely the portion gas entering cylinder body is directly discharged from relief opening, cylinder head scavenging is insufficient, and part mixed gas unburned directly enters air from relief opening, causes waste of fuel and the high technical problem of waste gas HC (hydrocarbon).
Because the suction port of traditional two stroke IC engine, relief opening are arranged on bottom cylinder wall, therefore for avoiding lubricant oil to scurry into firing chamber by suction port, cause can not adding lubricant oil in crankcase, cannot lubricate the moving element such as piston, bent axle.The mode of adding two stroke IC engine special lube in fuel oil is adopted to lubricate, therefore lubrication effect is poor, internal-combustion engine life-span is short, and lubricant oil participation burning causes exhaust emission object height, and firing chamber easily forms carbon distribution, piston ring is easily stuck by carbon distribution simultaneously, causes firing chamber to leak gas, makes the efficiency of internal combustion engine reduce further.
Publication number is disclose a kind of two stroke IC engine technological scheme in CN1034247A patent documentation, this two-stroke internal-combustion engine comprises cylinder head, cylinder block, piston, intake valve, exhaust valve and oil nozzle, this internal-combustion engine also comprises protruding part, the inwall of cylinder head is formed with a protruding part towards firing chamber projection, this convex portion extends along the whole diameter length of cylinder head inwall, and between intake duct and air outlet flue, intake duct and air outlet flue are separated by convex portion.This shield and cylinder head are one-body molded, and due to spark ignitor mixed gas, the temperature that burning ends is 2000 ~ 2500 degrees Celsius, and spark plug environment temperature can be higher.There is ablation problem in veil corners branch, the ablation of spark plug place is even more serious, needs integral replacing cylinder head after serious ablation.
This shield is del, below the oblique exhaust side of shield air inlet side plane, the gas entering cylinder prolongs shield air inlet side plane and is directed to exhaust side bottom, cause live gas to mix with the waste gas after burning to discharge, do not form Schnuerle scavenging effect, the waste gas of suction valve bottom cannot be got rid of simultaneously, reduces scavenge effect.
This shield is del, affects velocity of propagation of flame, cause combustion efficiency to decline because veil root is wider.
This shield is arranged near suction valve, has blocked the suction port of the suction valve of 1/3rd, reduces air inlet effect, the ventilation effect of reduction, and power of IC engine declines.
The position of this veil and shape, cause burning to take fire from shield side, then flame is transmitted to the opposite side of this veil.First cause velocity of combustion slow, power of IC engine, fuel efficiency all can descend by, and internal-combustion engine there will be problems of excessive heat, and cylinder head, cylinder and piston thermal distortion are large, affect working life.Secondly, burning is always from side, and firing pressure skewness, causes piston to occur in the cylinder swinging, and knocking appears in piston and cylinder wall, irregular wear problem, the attenuating efficiency of internal combustion engine and life-span.Simultaneously because veil pressure at both sides is uneven, so veil needs comparatively robust, cause volume comparatively large, root is wider, occupies head combustion chamber larger area, thus suction valve, outlet valve just can only reduce, and affects nearly exhaust effect.3rd, chamber temperature skewness, cause cylinder head, cylinder wall and piston to be heated inequality, suction valve is always higher than exhaust side temperature, and cylinder head, cylinder and piston generation thermal distortion, cause irregular wear, power, efficiency and life-span all can decline.
In order to solve the problems of the technologies described above, usual employing quartastroke engine, but quartastroke engine complex structure, and power of IC engine density ratio two stroke IC engine specific power is low by about 50%, causes that quartastroke engine in equal-wattage output situation takes up room greatly, weight is large.
Model utility content
The purpose of this utility model is to provide a kind of two stroke IC engine, solve the technical problem that part unburned mixed steam is directly discharged and discharged together with waste gas, reduce the content of HC in waste gas, improve air inlet, exhaust and scavenging efficiency, improve internal-combustion engine useful horsepower, reduce cylinder head, cylinder and piston thermal distortion, extend internal-combustion engine life-span, and compact structure.
The technical solution of the utility model is, a kind of two stroke IC engine comprises cylinder head, cylinder body, piston, suction valve, outlet valve, oil sprayer, water conservancy diversion fin and escape groove.Water conservancy diversion fin is rectangular configuration, water conservancy diversion fin is fixed in cylinder head, water conservancy diversion fin is along cylinder head diametric(al), and between intake duct and air outlet flue, intake duct and air outlet flue are separated by water conservancy diversion fin, and water conservancy diversion fin upper end and oil sprayer jet corresponding position arrange horizontal groove, and escape groove is arranged on piston, escape groove is positioned at center, firing chamber, and the position of escape groove is corresponding with the position of water conservancy diversion fin.
Described water conservancy diversion fin shape of cross section is arc, and the surface that namely water conservancy diversion fin is corresponding with intake duct is inner concave shape.
Described water conservancy diversion fin lower end arranges two eddy current grooves, and two eddy current groove directions are along the transverse direction of water conservancy diversion fin, and two eddy current grooves are along water conservancy diversion fin genesis analysis, and two eddy current groove outer side walls align with firing chamber outer side wall respectively.Groove is corresponding with firing chamber loop configuration.
The beneficial effects of the utility model are, 1) the utility model have employed the structure of overhead suction valve, outlet valve, oil sprayer and water conservancy diversion fin, solves the technical problem that part unburned mixed steam is directly discharged and discharged together with waste gas; 2) the fair water fin chip architecture of the utility model employing, solves water conservancy diversion fin ablation technology problem, improves velocity of propagation of flame, namely solve the problem that velocity of combustion is slow, improve air inlet, exhaust and scavenging efficiency; 3) the utility model has developed the advantage of quartastroke engine, and effectively improve internal-combustion engine specific power and mechanical efficiency, reduce discharge; 4) the utility model lubrication is good, reduces frictional loss, improves useful horsepower, reduces cylinder head, cylinder and piston thermal distortion, extends internal-combustion engine life-span, and compact structure is reliable, working stability; 5) internal-combustion engine of this kind of structure is found by contrast experiment, under same displacement, power improves 70% to 100%, under the help of pressurization system, power and can improving further, obtain larger power with less internal-combustion engine volume, save the raw material and processing cost of producing internal-combustion engine simultaneously.Under Same Efficieney internal-combustion engine can rotating speed lower, wear and tear less, the life-span is longer and fuel-economizing more, reduce user cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of two stroke IC engine of the utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the application structure schematic diagram of the utility model in internal-combustion engine shallow pot shape firing chamber;
Fig. 4 is the C-C sectional view of Fig. 3;
Fig. 5 is the B-B sectional view of Fig. 1;
Fig. 6 is utility model works process time diagram;
Fig. 7 is schematic diagram of taking a breath in utility model works process.
Fig. 8 is the fair water fin chip architecture schematic diagram in the utility model.
1. water conservancy diversion fins, 2. escape groove, 3. cylinder head, 4. cylinder body, 5. piston, 6. suction valve, 7. outlet valve, 8. intake duct, 9. air outlet flue, 10. firing chamber, 13. oil sprayers, 20. water conservancy diversion fin roots, 21. water conservancy diversion fin roots mounting grooves in figure
Embodiment
As shown in Figure 1, the utility model is that a kind of two stroke IC engine comprises water conservancy diversion fin 1, escape groove 2, cylinder head 3, cylinder body 4, piston 5, suction valve 6, outlet valve 7 and oil sprayer 13.
There is convex edge at the root two ends of water conservancy diversion fin 1, the Xray films of water conservancy diversion fin 1 is rectangular configuration, water conservancy diversion fin 1 is fixing on the head 3, water conservancy diversion fin 1 is along cylinder head diametric(al), and between intake duct 8 and air outlet flue 9, intake duct 8 and air outlet flue 9 are separated by water conservancy diversion fin 1, water conservancy diversion fin 1 upper end and oil sprayer jet corresponding position arrange horizontal groove 12, horizontal groove 12 ensures the normal oil spout of oil sprayer, fuel oil can be sprayed to the both sides of water conservancy diversion fin 1 by oil sprayer simultaneously, reaching water conservancy diversion fin 1 both sides can simultaneously clean-burning object, and avoid oil burning jet to be mapped on water conservancy diversion fin 1 and cause the aphlogistic problem of part fuel oil.Escape groove 2 is arranged on piston 5, escape groove 2 is positioned at center, firing chamber 10, and the position of escape groove 2 is corresponding with the position of water conservancy diversion fin 1, arranging of escape groove 2 can make piston as much as possible close to the internal surface of cylinder head 3, improve the compression ratio of internal-combustion engine, and then improve the power efficiency of internal-combustion engine.
As shown in Figure 1, water conservancy diversion fin 1 cross section one side profile is arc, water conservancy diversion fin 1 is highly 1 times of suction valve lift to 3 times, and namely water conservancy diversion fin 1 is from cylinder head 3 to downward-extension 1 doubly to the lift of the suction valve 6 of 3 times, and water conservancy diversion fin radius of the radian span is at 1/8 times of diameter to 4 times of suction valves 6.Carry out suitable selection according to different cylinder bores and piston lift and obtain suitable water conservancy diversion fin extended length and radian, surge is avoided to occur, the arcuate structure of water conservancy diversion fin by the below of inlet guide to intake valve, can solve the problem that below intake valve, scavenging is bad simultaneously.
Water conservancy diversion fin 1 select resistance to ablation and toughness comparatively good material make, take into account the expansion system with the material of cylinder cap, preferably ceramic based composites or nickel-base alloy simultaneously.
As shown in Figure 5, corresponding water conservancy diversion fin 1 position of cylinder head 3 internal surface has water conservancy diversion fin roots mounting groove 21, cylinder head 3 internal surface is extended at water conservancy diversion fin roots mounting groove 21 two ends, water conservancy diversion fin roots 20 drive fit embeds in the water conservancy diversion fin roots mounting groove 21 of cylinder head 3 internal surface, carries out clamping fastening in assembling by cylinder head 3 and cylinder body 4.The processing of this structure is convenient, and it is convenient to change, and maintainalbility is strong.Need not change piece cylinder head 3 when occurring that water conservancy diversion fin damages, maintenance cost is low.
As shown in Figure 8, the top of water conservancy diversion fin 1 is called water conservancy diversion fin roots 20, and water conservancy diversion fin roots 20 is for embedding the water conservancy diversion fin roots mounting groove 21 of cylinder head 3.
As shown in Figure 2, water conservancy diversion fin 1 lower end arranges two eddy current grooves 14, two eddy current groove 14 directions are along the transverse direction of water conservancy diversion fin 1, two eddy current grooves 14 are along water conservancy diversion fin 1 genesis analysis, and two eddy current groove 14 outer side walls align with firing chamber 10 outer side wall respectively, eddy current groove 14 is corresponding with the loop configuration of firing chamber 10, passes through for eddy current, reaches air and the better mixed combustion effect of fuel oil.
Working procedure of the present utility model is, as Fig. 1, shown in Fig. 6, the utility model is that a kind of two stroke IC engine is not when working, piston 5 is in inferior part of the cylinder block, after internal combustion engine start, drive motor drives crankshaft rotating, piston 5 moves, exhaust valve closing, IC Intake Valve Closes, before piston 5 arrives top dead center, when piston 5 is close to cylinder head 3, water conservancy diversion fin 1 enters in the escape groove 2 of piston, piston 5 is when running to cylinder head 3 simultaneously, by air compressing in firing chamber 10, oil sprayer 13 oil spout is also lighted a fire, gaseous combustion in cylinder body 4, bent axle continues to rotate, piston 5 moves down, then outlet valve 7 is opened, exhaust process is now in threshold state, waste gas after major part burning is discharged from air outlet flue 9 rapidly under exhaust gas pressure effect in cylinder body 4.Then suction valve 6 is opened, air is pressed in cylinder body 4 under air pump pressure, and extruding purge operation is carried out to the waste gas in cylinder, now outlet valve 7 and suction valve 6 are all in open mode, under the effect of water conservancy diversion fin 1, hinder air inlet directly to discharge, and air inlet change under water conservancy diversion fin 1 acts on flowing put to, contribute to scavenging and oil jetting combustion is abundant.Scavenging completes final vacuum valve 7 and closes, and air continues to enter cylinder body 4 under pressure and effect of inertia, and then suction valve 6 cuts out.Along with the rotation of crank and piston 5 move to cylinder head direction, carry out the circulations such as next compressed action.
Internal-combustion engine adopts F178 direct injection diesel engine, and volume of cylinder is 298cc, and nominal power (KW/r/min) is 3.68KW/3000, and fuel consumption rate is 276.1/3000.After this internal-combustion engine adopts the utility model structure, on the basis without special optimization, by test, output power is 7.728KW/3000, and power adds 110%, and fuel consume is 253g/ (kWh), reduces about 8%.Through 48 hours at full speed, test under full load mode, through disassembling measurement after test, there is not inordinate wear and fatigue damage situation in each component.Can improve further through follow-up optimizing power again, obtain the power higher than existing commercial internal-combustion engine and lower discharge.
Claims (6)
1. a two stroke IC engine, this two stroke IC engine comprises cylinder head (3), cylinder body (4), piston (5), suction valve (6), outlet valve (7) and oil sprayer (13), it is characterized in that: this two stroke IC engine also comprises water conservancy diversion fin (1) and escape groove (2), water conservancy diversion fin (1) has the Xray films of convex edge to be rectangular configuration for two ends, water conservancy diversion fin (1) is clamped by cylinder head (3) and cylinder body (4), water conservancy diversion fin (1) is along cylinder head diametric(al), and be positioned between intake duct (8) and air outlet flue (9), intake duct (8) and air outlet flue (9) are separated by water conservancy diversion fin (1), water conservancy diversion fin (1) upper end and oil sprayer jet corresponding position arrange horizontal groove (12), escape groove (2) is arranged on piston (5), escape groove (2) is positioned at firing chamber (10) center, and the position of escape groove (2) is corresponding with the position of water conservancy diversion fin (1).
2. according to a kind of two stroke IC engine according to claim 1, it is characterized in that: described water conservancy diversion fin (1) cross section one side profile is arc, and the surface that namely water conservancy diversion fin (1) is corresponding with intake duct is inner concave shape.
3. according to a kind of two stroke IC engine according to claim 1, it is characterized in that: described water conservancy diversion fin (1) is highly 1 times to 3 times of suction valve (6) lift, the radius of the radian span of water conservancy diversion fin (1) is at the diameter of 1/8 times to 4 times suction valve (6).
4. according to a kind of two stroke IC engine according to claim 1, it is characterized in that: the root of described water conservancy diversion fin (1), namely water conservancy diversion fin roots (20) is installed in the water conservancy diversion fin roots mounting groove (21) of cylinder head 3 internal surface, the position of corresponding water conservancy diversion fin (1) of cylinder head (3) internal surface has water conservancy diversion fin roots mounting groove (21), water conservancy diversion fin roots (20) convex edge, two ends longitudinal extension goes out the part of cylinder head (3) internal surface, carries out clamping fastening in assembling by cylinder head 3 and cylinder body 4.
5. according to a kind of two stroke IC engine described in claim 1 or 2, it is characterized in that: described water conservancy diversion fin (1) lower end arranges two eddy current grooves (14), two eddy current groove (14) directions are along the transverse direction of water conservancy diversion fin (1), two eddy current grooves (14) are along water conservancy diversion fin (1) genesis analysis, and two eddy current groove (14) outer side walls align with firing chamber (10) outer side wall respectively, eddy current groove (14) is corresponding with the loop configuration of firing chamber (10).
6. according to a kind of two stroke IC engine according to claim 1, it is characterized in that: described water conservancy diversion fin (1) Ceramics based composites or nickel-base alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420535435.1U CN204099043U (en) | 2014-09-18 | 2014-09-18 | A kind of two stroke IC engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420535435.1U CN204099043U (en) | 2014-09-18 | 2014-09-18 | A kind of two stroke IC engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204099043U true CN204099043U (en) | 2015-01-14 |
Family
ID=52267479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420535435.1U Withdrawn - After Issue CN204099043U (en) | 2014-09-18 | 2014-09-18 | A kind of two stroke IC engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204099043U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234818A (en) * | 2014-09-18 | 2014-12-24 | 石建民 | Two-stroke internal combustion engine |
| CN111173615A (en) * | 2019-12-06 | 2020-05-19 | 谭智 | Two-stroke internal combustion engine and working method thereof |
-
2014
- 2014-09-18 CN CN201420535435.1U patent/CN204099043U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234818A (en) * | 2014-09-18 | 2014-12-24 | 石建民 | Two-stroke internal combustion engine |
| WO2016041298A1 (en) * | 2014-09-18 | 2016-03-24 | 石建民 | Two-stroke internal combustion engine |
| CN104234818B (en) * | 2014-09-18 | 2018-04-10 | 石建民 | A kind of two-stroke internal combustion engine |
| US10024223B2 (en) | 2014-09-18 | 2018-07-17 | Jianmin Shi | Two-stroke internal combustion engine |
| CN111173615A (en) * | 2019-12-06 | 2020-05-19 | 谭智 | Two-stroke internal combustion engine and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150114 Effective date of abandoning: 20180410 |
|
| AV01 | Patent right actively abandoned |