CN101660471B - Petrol engine air inlet path - Google Patents
Petrol engine air inlet path Download PDFInfo
- Publication number
- CN101660471B CN101660471B CN2009101909542A CN200910190954A CN101660471B CN 101660471 B CN101660471 B CN 101660471B CN 2009101909542 A CN2009101909542 A CN 2009101909542A CN 200910190954 A CN200910190954 A CN 200910190954A CN 101660471 B CN101660471 B CN 101660471B
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- China
- Prior art keywords
- air inlet
- intake duct
- inlet path
- petrol engine
- center line
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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
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Abstract
The invention relates to a petrol engine air inlet path which is an integral high-order tangential air inlet path with two air inlet ports. A combustion chamber in cooperation with the air inlet path is a combustion chamber with a pitched roof; the outer side of the air inlet path body is provided with the valve conduit boss of the air inlet path. The invention is characterized in that the included angle gamma between the tangential direction of two curved surfaces, which are adjacent to an air path throat position, and the air path body is 60-150 degrees; the included angle beta between the air inlet path central line and the air inlet door central line of the air inlet path body is 30-60 degrees; the included angle alpha between the air inlet path central line of the air inlet path bodyand the exhausting side plane of the combustion chamber ranges from negative 10 degrees to 15 degrees. The above structure can ensure higher tumbling intensity and flow coefficient of the invention and realizes overall consideration of the tumbling intensity and flow coefficient of the petrol engine air inlet path.
Description
Technical field
The present invention relates to the petrol engine technical field.
Background technique
Because energy shortage and environmental pollution increasingly sharpen, the energy of each fuel oil is brought into play and utilized to demand of auto engine as much as possible, and reduce the quantity of noxious emission as much as possible.In numerous factors that influence fuel consumption rate and noxious emission amount, the burning of fuel is the factor that plays a decisive role, and organizing of the motion of burning and air-flow and mixed air is closely related, so especially intake duct is most important for the energy-saving and emission-reduction of automobile for the air flue of motor car engine.
Design for the petrol engine intake duct, our special concern flow coefficient and roll two indexs of intensity of flow, wish to obtain big as far as possible flow coefficient and the big as far as possible intensity of flow that rolls, but these two parameters always exist contradiction, need be according to the different emphasis of selecting of the aspects such as performance objective, structural type and fuel delivery mode of motor.
In current most of intake duct schemes, often can not make flow coefficient and roll intensity of flow and all reach a higher level, or it is very little even do not have but roll intensity of flow to have reached big flow coefficient, but or roll the very big flow coefficient of having sacrificed of intensity of flow.
Summary of the invention
Purpose of the present invention is exactly to roll the problem that intensity of flow and flow coefficient can not be taken into account in order to solve present petrol engine intake duct, and a kind of petrol engine air inlet is provided.
In order to solve the problems of the technologies described above, the technological scheme that the present invention is implemented is:
This petrol engine air inlet is the high-order tangential inlet ducts of integrated type two intake valves, and firing chamber with matching is pitched roof formula firing chamber.Be provided with the valve guide bushing boss of intake duct in the outside of intake duct body; The sectional shape of described intake duct body is rounded or oval, changes gently along center line, and area dwindles or constant substantially gradually along airflow direction; The intake duct center line of described intake duct body is seen the basic straight line that is from intake duct body side projection, and straightness accuracy is not more than 2mm; The intake duct center line of described intake duct body and exhaust combustion chamber side plane angle α are between 10 °～15 °.
The angle γ of the two curved surface tangential direction that described intake duct body is adjacent with air flue aditus laryngis position is between 60 °～150 °.The intake duct center line of described intake duct body and intake valve center line angle β are between 30 °～60 °.
The import of described intake duct has 30 ° chamfering, is generally casting.
The air flue aditus laryngis position of described intake duct is by the machining moulding.
Among the present invention and since among the present invention the intake duct center line substantially linearly, air flue body portion sectional shape is rounded or oval, shape and area be sudden change not, and be very little to the resistance that flows.And the conduit boss avoided the obstruction to air-flow outside the air flue main body, and the chamfering of intake duct import can also be avoided the alignment error with intake manifold that air-flow is produced hindering, and these can guarantee effectively that this intake duct has the higher flows coefficient.And intake duct cooperates with pitched roof formula firing chamber, intake duct main center line and exhaust combustion chamber side plane angle are very little, and the two curved surface tangential direction that intake duct air flue body is adjacent with the aditus laryngis position have angle, can locate the downstream at this and produce flow separation, the opposite side that makes air-flow mainly pass through intake duct is pasting the exhaust combustion chamber side plane and is entering cylinder, in cylinder, be rotarily formed then and roll stream, so this intake duct has the higher intensity of flow that rolls again.
Description of drawings
Fig. 1 is a side view of the present invention, has represented the overall structure of intake duct, firing chamber and cylinder.
Fig. 2 is a side view of the present invention, has represented the detailed structure of intake duct core.
Fig. 3 is a front view of the present invention, has represented the detailed structure of intake duct core.
Be the explanation of main part mark in the accompanying drawing below:
1a---intake duct import 1b---intake duct center line 1---intake duct body
2a---intake valve center line 2---valve guide bushing boss 3---air flue aditus laryngis position
4---firing chamber 5---cylinder
Embodiment
In the structure shown in Fig. 1 and 2, this intake duct is the high-order tangential inlet ducts of integrated type two intake valves, and it has intake duct body 1, valve guide bushing boss 2 and air flue aditus laryngis position 3, and firing chamber 4 with matching is pitched roof formula firing chamber.Intake duct import 1a has 1 * 30 ° chamfering, is casting; Valve guide bushing boss 2 is in intake duct body 1 outside.Air flue aditus laryngis ratio be 3 these positions by the machining moulding, the angle γ of the two curved surface tangential direction that intake duct body 1 and air flue aditus laryngis position 2 are adjacent is 100 °.Intake duct center line 1b is a straight line from intake duct body side projection (i.e. projection on side view) substantially, straightness accuracy is less than 1mm, the sectional shape ovalize of intake duct body 1 change gently along intake duct center line 1b, and area dwindles gradually along airintake direction.The angle β of intake duct center line 1b and intake valve center line 2a is 45 °, with the angle α on 4 exhaust side planes, firing chamber be 10 °.
Claims (5)
1. petrol engine air inlet, it is the high-order tangential inlet ducts of integrated type two intake valves, firing chamber with matching is pitched roof formula firing chamber, is provided with the valve guide bushing boss of intake duct in the outside of intake duct body; It is characterized in that: the sectional shape of described intake duct body is rounded or oval, changes gently along center line, and area dwindles or constant substantially gradually along airflow direction; The intake duct center line of described intake duct body is seen the basic straight line that is from intake duct body side projection, and straightness accuracy is not more than 2mm; The intake duct center line of described intake duct body and exhaust combustion chamber side plane angle α are between 10 °～15 °.
2. petrol engine air inlet according to claim 1 is characterized in that: the angle γ of the two curved surface tangential direction that described intake duct body is adjacent with air flue aditus laryngis position is between 60 °～150 °.
3. petrol engine air inlet according to claim 1 and 2 is characterized in that: the intake duct center line of intake duct body and intake valve center line angle β are between 30 °～60 °.
4. petrol engine air inlet according to claim 3 is characterized in that: the import of described intake duct has 30 ° chamfering.
5. petrol engine air inlet according to claim 4 is characterized in that: the air flue aditus laryngis position of described intake duct is by the machining moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101909542A CN101660471B (en) | 2009-09-24 | 2009-09-24 | Petrol engine air inlet path |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101909542A CN101660471B (en) | 2009-09-24 | 2009-09-24 | Petrol engine air inlet path |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101660471A CN101660471A (en) | 2010-03-03 |
| CN101660471B true CN101660471B (en) | 2011-08-10 |
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ID=41788698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101909542A Expired - Fee Related CN101660471B (en) | 2009-09-24 | 2009-09-24 | Petrol engine air inlet path |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101660471B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392752A (en) * | 2011-11-28 | 2012-03-28 | 天津内燃机研究所 | Air-path structure for small universal gasoline engines |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MX367049B (en) * | 2013-02-01 | 2019-08-02 | Andritz Inc | Cast refiner plate segment with blunt edges and corners for safe handling. |
| CN111379649A (en) * | 2020-03-23 | 2020-07-07 | 重庆长安汽车股份有限公司 | Intake duct applied to high-compression-ratio direct-injection self-priming internal combustion engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3335707A (en) * | 1964-04-25 | 1967-08-15 | Motoren Werke Mannheim Ag | Internal combustion engines |
| CN2886094Y (en) * | 2006-03-31 | 2007-04-04 | 刘之川 | Four-stroke gasoline engine |
| CN101305174A (en) * | 2005-09-08 | 2008-11-12 | 丰田自动车株式会社 | Intake port structure for internal combustion engine |
-
2009
- 2009-09-24 CN CN2009101909542A patent/CN101660471B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3335707A (en) * | 1964-04-25 | 1967-08-15 | Motoren Werke Mannheim Ag | Internal combustion engines |
| CN101305174A (en) * | 2005-09-08 | 2008-11-12 | 丰田自动车株式会社 | Intake port structure for internal combustion engine |
| CN2886094Y (en) * | 2006-03-31 | 2007-04-04 | 刘之川 | Four-stroke gasoline engine |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2006-316736A 2006.11.24 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392752A (en) * | 2011-11-28 | 2012-03-28 | 天津内燃机研究所 | Air-path structure for small universal gasoline engines |
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| Publication number | Publication date |
|---|---|
| CN101660471A (en) | 2010-03-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xu Zhiqin Inventor after: Liu Bo Inventor after: Chen Xiaodong Inventor after: Qiao Xin Inventor after: Su Jicai Inventor before: Xu Zhiqin Inventor before: Chen Xiaodong Inventor before: Qiao Xin Inventor before: Su Jicai |
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| COR | Change of bibliographic data | ||
| 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: 20110810 Termination date: 20190924 |