CN2674129Y - Cylinder air channel of two stroke engine - Google Patents
Cylinder air channel of two stroke engine Download PDFInfo
- Publication number
- CN2674129Y CN2674129Y CN 200320123097 CN200320123097U CN2674129Y CN 2674129 Y CN2674129 Y CN 2674129Y CN 200320123097 CN200320123097 CN 200320123097 CN 200320123097 U CN200320123097 U CN 200320123097U CN 2674129 Y CN2674129 Y CN 2674129Y
- Authority
- CN
- China
- Prior art keywords
- scavenging
- cylinder block
- scavenging air
- air
- air belt
- 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 - Fee Related
Links
Images
Landscapes
- Supercharger (AREA)
Abstract
The utility model belongs to the technical field of the motorcycle engine manufacture, in particular to a cylinder air channel of two stroke engine of the motorcycle engine, comprising a cylinder body, a scavenging duct, and an exhaust duct. The primary scavenging duct is asymmetrically arranged at the two sides of the cylinder body, the secondary exhaust duct are asymmetrically arranged at the two sides of the primary exhaust duct. The cylinder body air channel of the utility model can enlarge the sectional plane of the effective scavenging and the exhausting to form the high rate gas column of the scavenging. Thus, the scavenging and exhausting efficiency is enhanced, and the feeding amount of fresh gas mixture is increased.
Description
Technical field
The utility model belongs to motorcycle engine manufacturing technology field, is specifically related to a kind of motorcycle two stroke engine cylinder block air flue.
Background technique
The air exchange system of motor, vent systems directly have influence on engine power performance and environmental index.
Therefore, the shape of the air inlet of cylinder air flue, scavenging and exhaust passage structure is most important with it.At present, the cylinder block of commercially available two stroke engine adopts single channel design mostly, and exhaust power is lower.Publication number CN2376543Y " the six scavenging air belt cylinder block that motorcycle engine is used ", by increasing the single raise guide rib original secondary scavenging air belt is become two secondary scavenging air belts, with the power of raising motor, but this scavenging system is still deposited shortcoming and is not reached the high request of modern motor to air cylinder structure.Yamaha CY50, RX125, NY50 motor all adopt seven mouthfuls of formulas, scavenge effect greatly improves, the gas that but the gas that enters cylinder is compressed, light a fire, the burning back produces is only discharged from single air outlet flue, a large amount of residual airs still is collected at and occupies certain space in the cylinder simultaneously, thereby it is less to make the interior fresh air of crankcase enter cylinder, has reduced the amount of charging into that fresh mix rises, and causes the useful horsepower of motor to reduce, acceleration performance descends, and pollutant increases.
Summary of the invention
The purpose of this utility model is to improve existing two stroke engine cylinder block air-exchanging structure, improves ventilation quality to improve the performance of two stroke engine, and a kind of two stroke engine cylinder block air flue that can improve volumetric efficiency and scavenging, exhaust efficiency is provided.
The utility model is to finish the technological scheme that above-mentioned purpose adopts to be:
A kind of two stroke engine cylinder block air flue comprises cylinder block, scavenging air belt and air outlet flue, it is characterized in that: main scavenging air belt is symmetricly set in both sides, cylinder block center, and inferior air outlet flue is arranged in the main exhaust bilateral symmetry.
Described air outlet flue, scavenging air belt and cylinder block combine as a whole.
The 1st～5 scavenging air belt opening is located at the junction plane of cylinder block and crankcase, the 6th, 7 scavengings
The road is opened on the inwall of establishing the 5th main scavenging air belt.
Wherein, the 1st～5 is main scavenging air belt, and the 6th, 7 is time scavenging air belt; 3 air outlet flues, wherein the 1st is main exhaust, the 2nd, 3 is time air outlet flue.
The 1st～5 main scavenging air belt one end opening is located at the lower plane that cylinder block combines with crankcase, and the 6th, 7 scavenging air belt one end opening is in the inwall of the 5th main scavenging air belt, and the other end is opened on cylinder block cylinder hole inwall; The 1st main exhaust one end opening is in the cylinder block relief opening, and the other end is opened on cylinder block cylinder hole inwall, and the 2nd, 3 air outlet flue one end opening is in the main exhaust inwall, and the other end is opened on cylinder block cylinder hole inwall; The 1st main scavenging air belt and the 3rd main scavenging air belt, the 2nd main scavenging air belt and the 4th main scavenging air belt, the 6th scavenging air belt and the 7th scavenging air belt, the 2nd air outlet flue and the 3rd air outlet flue all are symmetrically distributed one by one.
The cylinder block air flue that the utility model provides can make the cross section of effective scavenging and exhaust increase, and helps the formation of scavenging high speed gas column, thereby has improved the amount of charging into of scavenging, exhaust efficiency and incoming mixture.
Description of drawings
Fig. 1～Fig. 5 is an air flue sectional view of the present utility model; Wherein:
Among Fig. 1: 1 is that the 1st main scavenging air belt 3 is the 3rd main scavenging air belt
Among Fig. 2: 2 is that the 2nd main scavenging air belt 4 is the 4th main scavenging air belt
Among Fig. 3: 9 is that the 2nd air outlet flue 10 is the 3rd air outlet flue
Among Fig. 4: 5 is that the 5th main scavenging air belt 8 is the 1st main exhaust
Among Fig. 5: 6 is that the 6th scavenging air belt 7 is the 7th scavenging air belt
Fig. 6 is the airway cross-section design sketch
Fig. 7 is gas port general effect figure
Embodiment
Below in conjunction with example the utility model is further described.
The 1st～5 main scavenging air belt one end opening is in the lower plane of cylinder block and crankcase junction plane, and the 6th, 7 scavenging air belt one end opening is in the 5th main scavenging air belt inwall, and the other end is opened on cylinder block cylinder hole inwall; The 1st main exhaust one end opening is located at the cylinder block relief opening, and the other end is opened on cylinder block cylinder hole inwall, and the 2nd, 3 air outlet flue one end opening is in the main exhaust inwall, and the other end is opened on cylinder block cylinder hole inwall; The 1st main scavenging air belt and the 3rd main scavenging air belt, the 2nd main scavenging air belt and the 4th main scavenging air belt, the 2nd scavenging air belt and the 3rd scavenging air belt also are distributed in one by one to be and are symmetrically arranged in the cylinder axis both sides, and two times scavenging air belt is longer at inwall place, cylinder cylinder hole axial cross section, all can be corresponding when descending with fitting piston with two perforates on the piston
Air in entering cylinder is compressed, after the ignition, under firing pressure, promote piston from top dead center toward descending, crankcase volume reduces, pressure increases gradually; When descent of piston to the 1 main exhaust and the 2nd air outlet flue, cylinder hole inwall upper limb opening, gas is discharged cylinder from the 1st main exhaust and the 2nd, 3 air outlet flue with high speed after a large amount of burning of piston head top.When piston goes further downwards to main scavenging air belt (1,2,3,4,5) and inferior scavenging air belt (1,2) cylinder hole inwall upper limb opening, because crankcase pressure increases, fresh air in the crankcase enters cylinder by scavenging air belt, and near cylinder axis, form the high speed gas column and residual gas is gathered together together discharge cylinder from the 1st main exhaust and the 2nd, 3 air outlet flue with high speed, improved exhaust efficiency greatly.
Claims (3)
1. a two stroke engine cylinder block air flue comprises cylinder block, scavenging air belt and air outlet flue, it is characterized in that: main scavenging air belt is symmetricly set in both sides, cylinder block center, and inferior air outlet flue is arranged in the main exhaust bilateral symmetry.
2. two stroke engine cylinder block air flue according to claim 1 is characterized in that air outlet flue, scavenging air belt and cylinder block combine as a whole.
3. two stroke engine cylinder block air flue according to claim 1 is characterized in that the 1st～5 scavenging air belt opening is located at the junction plane of cylinder block and crankcase, and the 6th, 7 scavenging air belts are opened on the inwall of establishing the 5th main scavenging air belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320123097 CN2674129Y (en) | 2003-12-31 | 2003-12-31 | Cylinder air channel of two stroke engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320123097 CN2674129Y (en) | 2003-12-31 | 2003-12-31 | Cylinder air channel of two stroke engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2674129Y true CN2674129Y (en) | 2005-01-26 |
Family
ID=34476378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320123097 Expired - Fee Related CN2674129Y (en) | 2003-12-31 | 2003-12-31 | Cylinder air channel of two stroke engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2674129Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439671A (en) * | 2019-08-23 | 2019-11-12 | 济南天易迅达电气科技有限公司 | A kind of free-piston engine scavenging structure |
-
2003
- 2003-12-31 CN CN 200320123097 patent/CN2674129Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439671A (en) * | 2019-08-23 | 2019-11-12 | 济南天易迅达电气科技有限公司 | A kind of free-piston engine scavenging structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1278027C (en) | Discharging controller for crankcase | |
| CN201568131U (en) | Two-stroke engine | |
| CN200952421Y (en) | Two-stroke petrol engine | |
| US20080098992A1 (en) | Two-Stroke Internal Combustion Engine | |
| CN201560858U (en) | Engine piston | |
| CN1840885A (en) | Two-stroke motor | |
| CN2674129Y (en) | Cylinder air channel of two stroke engine | |
| CN101463753A (en) | Low-discharge two-stroke gasoline engine | |
| CN202659336U (en) | Two-stroke engine | |
| CN201826965U (en) | Two-stroke layering scavenging engine | |
| CN1472426A (en) | Two stroke engine | |
| CN202659337U (en) | Two-stroke engine | |
| CN102797550A (en) | Two-stroke engine | |
| CN103061864B (en) | Multilayer scavenging engine | |
| US5269266A (en) | V-type two cycle supercharged engine | |
| CN1121741A (en) | Multicylinder internal combustion engine with exhaust gas recirculation | |
| CN215057779U (en) | Gasoline engine and layered scavenging cylinder thereof | |
| CN219910970U (en) | Two-stroke engine with scavenging passage having flow-limiting structure | |
| CN2511795Y (en) | Two stroke IC engine with scavenging cylinder | |
| CN201306207Y (en) | Low discharge two-stroke gasoline engine | |
| CN214221353U (en) | Exhaust port structure for two-stroke engine | |
| CN202360223U (en) | Engine | |
| CN2605392Y (en) | Cylinder head casing for multi cylinder internal combustion engine | |
| CN202300630U (en) | Multilayer scavenging engine | |
| CN2272949Y (en) | Two-stroke cycle gasoline engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050126 Termination date: 20121231 |