CN2298349Y - Natural ventilation strengthening petrol engine with multiple scavenging mouth - Google Patents
Natural ventilation strengthening petrol engine with multiple scavenging mouth Download PDFInfo
- Publication number
- CN2298349Y CN2298349Y CN 97207793 CN97207793U CN2298349Y CN 2298349 Y CN2298349 Y CN 2298349Y CN 97207793 CN97207793 CN 97207793 CN 97207793 U CN97207793 U CN 97207793U CN 2298349 Y CN2298349 Y CN 2298349Y
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- China
- Prior art keywords
- petrol engine
- cylinder block
- parallel
- natural ventilation
- engine
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- Expired - Fee Related
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to a natural ventilation strengthening petrol engine with multiple scavenging mouths. As a power machine of motorcycles or other minitype traveling machines and tools, the engine adopts a cylinder body with a new structure which has scavenging mouths of which the number is not less than five. Dozens of mutually parallel radiation fins with sufficient heat radiation areas are arranged outside in the direction that is closely parallel to the airflow direction under traveling working conditions after installation. The petrol engine can have natural ventilation efficiently during traveling without having to be provided with a fan to produce compulsory cold air, which can improve the output power of the petrol engine drastically.
Description
The present invention relates to miniature gasoline engine, as the power engine of motorcycle or other small-sized walking facility.
Existing domestic and imported motorcycle gasoline engine, the natural air cooled mode of the many employings of the small gasoline engine of 3 scavenging ports of all two strokes, and the reinforcement petrol engine of the many scavenging ports of two strokes (〉=5 scavenging ports), because of the raising of rotating speed, power causes that temperature rise increases considerably, for solving the heat load balance, it all adopts and installs the fan forced air cooling additional.This class petrol engine, modern scavenging technology because of many scavenging ports improves scavenging efficiency on the one hand, can improve the about 10-20% of rotating speed and power, increase power consumption about 12% because of installing fan additional again on the one hand, therefore offset the raising of power to a great extent, restricted increasing substantially and effectively utilizing of many scavenging ports petrol engine power.
Purpose of the present invention just is the drawback at existing many scavenging ports forced air cooling petrol engine, provides a kind of and takes effectively natural air cooledly, need not install the natural air cooled reinforcement petrol engine of many scavenging ports of fan additional, can significantly improve the power of many scavenging ports petrol engine.
We think that the drawback of existing many scavenging ports forced air cooling petrol engine is that its cylinder block radiating structure design is unreasonable.Cylinder block outside heat sink area is little, and direction is set all perpendicular to cylinder block center line (promptly now mounting type is approaching down perpendicular to airflow direction), causes radiating effect poor.Therefore the present invention starts with from the cylinder block radiating structure, being the cylinder block outside is provided with the tens of radiating fin that are parallel to each other (promptly now under the mounting type radiating fin be parallel to the cylinder block center line) by installing under the back walking operating mode near being parallel to airflow direction, and suitably increase the radiating fin area, improve the cylinder block heat extraction natural air cooled efficient of dispelling the heat, do not need forced air cooling thereby reach, improve the petrol engine effective output.
Figure of description be of the present invention one and discharge capacity be the specific embodiments of the natural air cooled reinforcement petrol engine of the many scavenging ports of 60cc.Accompanying drawing 1 is the side view of the natural air cooled reinforcement petrol engine of these many scavenging ports, and (1) is cylinder block among the figure; Accompanying drawing 2 is A-A sectional views of cylinder block (1).
As shown in Figure 1 and Figure 2, petrol engine of the present invention comprises piston, wrist pin, connecting rod, bent axle, crankcase, magnetogenerator, cylinder cap, Carburetor, silencing apparatus and other and existing domestic and imported motorcycle gasoline engine spare part in common use.And the present invention has adopted cylinder block as shown in Figure 1 and Figure 2 (1), this cylinder block (1) inside is provided with 〉=5 scavenging ports (2-6), the size of its scavenging port, position and angle are by the requirement setting of 60cc gasoline, and its outside is provided with 22 radiating fin that are parallel to each other (7) by installing under the back walking operating mode near being parallel to airflow direction (promptly now being parallel to the cylinder block center line under the mounting type).The length and width size of radiating fin (7) suitably increases, to strengthen heat diffusion area.
The present invention is suitable for the small gasoline engine of other discharge capacities equally.Existing small gasoline engine is installed on motorcycle near installing by level, changes as setting angle, near being parallel to airflow direction the direction of radiating fin on cylinder block is set under the operating mode that then should guarantee to walk.
Advantage of the present invention and effect are fairly obvious, is the small gasoline engine comparative trial of 50cc, 60cc and 80cc through the our factory to discharge capacity, under the identical oil consumption of same displacement, the natural air cooled reinforcement petrol engine of many scavenging ports of the present invention, its power can increase about 14%, and rotating speed can increase about 18%, and moment of torsion can increase about 13%, and complete machine weight only increases by 0.5% because of the suitable increasing of radiating fin, and cost only increases about 5%.
Claims (1)
- The natural air cooled reinforcement petrol engine of a kind of many scavenging ports, comprise piston, wrist pin, connecting rod, bent axle, crankcase, magnetogenerator, cylinder cap, Carburetor, silencing apparatus etc., it is characterized in that adopting a kind of cylinder block of new structure, this cylinder block has 〉=5 scavenging ports, its outside by install under the back walking operating mode near be parallel to airflow direction promptly now mounting type be parallel to the cylinder block center line and be provided with the tens of radiating fin that are parallel to each other with enough areas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97207793 CN2298349Y (en) | 1997-03-20 | 1997-03-20 | Natural ventilation strengthening petrol engine with multiple scavenging mouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97207793 CN2298349Y (en) | 1997-03-20 | 1997-03-20 | Natural ventilation strengthening petrol engine with multiple scavenging mouth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2298349Y true CN2298349Y (en) | 1998-11-25 |
Family
ID=33927464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97207793 Expired - Fee Related CN2298349Y (en) | 1997-03-20 | 1997-03-20 | Natural ventilation strengthening petrol engine with multiple scavenging mouth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2298349Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610872A (en) * | 2012-03-16 | 2012-07-25 | 奇瑞汽车股份有限公司 | Battery pack applied to electrical vehicles |
-
1997
- 1997-03-20 CN CN 97207793 patent/CN2298349Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610872A (en) * | 2012-03-16 | 2012-07-25 | 奇瑞汽车股份有限公司 | Battery pack applied to electrical vehicles |
| CN102610872B (en) * | 2012-03-16 | 2015-03-25 | 奇瑞汽车股份有限公司 | Battery pack applied to electrical vehicles |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |