CN101696663A - Tumble guide type gasoline engine air passage - Google Patents
Tumble guide type gasoline engine air passage Download PDFInfo
- Publication number
- CN101696663A CN101696663A CN200910191232A CN200910191232A CN101696663A CN 101696663 A CN101696663 A CN 101696663A CN 200910191232 A CN200910191232 A CN 200910191232A CN 200910191232 A CN200910191232 A CN 200910191232A CN 101696663 A CN101696663 A CN 101696663A
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- China
- Prior art keywords
- air passage
- air flue
- tumble
- combustion
- angle
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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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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention provides a tumble guide type gasoline engine air passage. Under the conditions that the spatial structure of a cylinder cover and the position of an oil sprayer are definite and the thicknesses of a water jacket of the air passage and a wall of an oil passage are ensured, sensitive areas of an air passage angle, an air passage bending radius, an air passage throat size and the like are reasonably designed; an included angle between an axis of the air passage and the bottom plane of the cylinder cover, namely the air passage angle alpha is designed to between 25 and 35 degrees; the bending radius r at the lower edge of the throat of the air passage is 18 to 25 millimeters; and the throat of the air passage is designed with larger circulation section area (1,854.14-2,009.88 mm2), and can be matched with the air passage angle and the bending radius to form a throat size phi 23 to 25 millimeters with certain strength tumble. By adopting the tumble air passage, the circulation capacity of the air passage can be fully utilized, proper tumble can be formed in a combustion chamber, mixed gases are mixed more evenly, the propagation of combustion flame is favorable, the combustion speed is higher, the combustion duration is reduced, and the combustion efficiency is higher.
Description
Technical field
The present invention relates to Structure of Internal-Combustion Engine, be specifically related to the air inlet system and exhaust system design of internal-combustion engine.
Background technique
Intake duct is the throat of motor, play the control air-flow enter cylinder power, direction and with fuel oil mixed combustion effect whether fully, and the quality of the intake duct of air inlet system and exhaust system design affects power character, Economy, combustion noise and the discharge of harmful gases of motor to a great extent.
The existing petrol engine intake duct design tangential air flues that adopt, design object is to guarantee that air inflow conforms with under the prerequisite of designing requirement, improves as far as possible and rolls intensity of flow, can also organize under some situation to form certain eddy current more.Usually adopt flow coefficient to flow to come the performance of intake duct is estimated than two parameters with rolling.In the design process of intake duct,, also must consider the factor of following several respects: the restriction of a. cylinder cap spatial structure except that considering flow coefficient and rolling stream than two parameters; B. the geometrical shape of air flue; C. the manufacturing of air flue.
In the past, intake duct design all stresses the exploitation of negotiability, and flow coefficient is more than 0.16, and generally between 45 °～60 °, bending radius is about between 25～45mm at the air flue angle, and is all bigger, and it is relatively poor to cause tissue to roll the ability of stream, rolls stream and compares all below 1.Both at home and abroad the artificer also is fully recognized that and rolls the significance of stream to combustion process in recent years, and can organize certain intensity to roll the air flue of stream in design hardy, and high-lift is rolled stream than reaching more than 4.Yet for the two parameter flow coefficients of estimating the air flue performance with roll stream and than between have certain restricting relation.After the air flue performance acquired a certain degree, the raising of rolling the stream ratio will certainly cause the decline of air flue negotiability.So in design, will promote negotiability simultaneously and form difficult point that the ability roll stream is present air flue design and direction that artificers make great efforts.
Summary of the invention
The present invention proposes a kind of tumble guide type gasoline engine air passage, the technical problem that solves is under the cylinder cap geometrical construction condition that limits, and guarantees that simultaneously negotiability conforms with designing requirement, organizes air motion in the cylinder better, form good mixing gas, the optimized combustion effect.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
The present invention is certain in cylinder cap spatial structure, oil sprayer position, guarantee under the situation of air flue water jacket and oil duct wall thickness, appropriate design is carried out in sensitive areas such as air flue angle, air flue bending radius, air flue aditus laryngis size, force down intake duct, form a kind of stream guide type gasoline engine intake duct that rolls.The air flue axis of design air flue and the angle of cylinder cap bottom plane, be that air flue angle α is 25 °～35 ° angles, the bending radius r at the place, aditus laryngis lower edge of air flue is 18～25mm, like this, air flue angle and bending radius are less, help forming in cylinder the stream that rolls of certain intensity.The air flue aditus laryngis is the sensitizing range in the air flue design, and the design has taken all factors into consideration the factors such as fairing transition of water jacket wall thickness, oil duct wall thickness, valve and the interference of cylinder cap bottom plane, aditus laryngis, has designed bigger actual internal area (1854.14-2009.88mm
2)And can with the air flue angle, bending radius cooperate to form the aditus laryngis size φ that certain intensity is rolled stream, i.e. 23～25mm.
Air flue inwall of the present invention transition is smooth smooth and easy, does not have the structural mutation phenomenon.
Adopt the gas road that rolls of the present invention, the negotiability of air flue can be utilized fully, can form the stream that rolls of appropriateness in the firing chamber, mixed gas mixes more even, helps the propagation of combustion flame, and velocity of combustion is faster, reduced combustion duration, made combustion efficiency higher.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure: air flue axis 1, water jacket 2, cylinder cap bottom plane 3, air flue aditus laryngis 4, aditus laryngis lower edge 5, cylinder cap 6, air flue 7
Embodiment
The present invention is a kind of tumble guide type gasoline engine air passage, and the structure of its corresponding cylinder cap 6 is illustrated in fig. 1 shown below.Under the situation that guarantees circulation area, in order to organize the stream that rolls of certain intensity, the air flue axis 1 of air flue 7 is less with cylinder cap bottom plane 3 angle α (being the air flue angle) design, is 25 ° ~ 35 ° angles, and the i.e. 18 ~ 25mm of the bending radius r that has reasonably designed 5 places, aditus laryngis lower edge.Air flue aditus laryngis 4 is the sensitizing ranges in the air flue design, and the design has taken all factors into consideration the factors such as fairing transition of water jacket 2 wall thickness, oil duct wall thickness, valve and the interference of cylinder cap bottom plane, aditus laryngis, has designed bigger actual internal area (1854.14-2009.88mm
2)And can with the air flue angle, bending radius cooperate to form the i.e. 23 ~ 25mm of aditus laryngis size φ that certain intensity rolls stream.
The characteristic of this air flue design is: there is not mutation structure in the air passage structure smoothness in the general structure.Negotiability is preferably arranged, and simultaneously by the optimal design between angle, stingy road, small-bend radius and big as far as possible aditus laryngis size, that can organize certain intensity rolls the stream motion.
Claims (2)
1. tumble guide type gasoline engine air passage, described air flue (7) is arranged in the cylinder cap (6), it is characterized in that: the air flue axis (1) of described air flue (7) and the angle of cylinder cap bottom plane (3), be that air flue angle α is 25 °～35 ° angles, described air flue (7) the bending radius r that locates of aditus laryngis lower edge (5) be 18～25mm, air flue aditus laryngis (4) the size φ of described air flue (7), i.e. 23～25mm.
2. tumble guide type gasoline engine air passage according to claim 1 is characterized in that: the inwall transition of described air flue (7) is smooth smooth and easy, does not have mutation structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910191232A CN101696663A (en) | 2009-10-27 | 2009-10-27 | Tumble guide type gasoline engine air passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910191232A CN101696663A (en) | 2009-10-27 | 2009-10-27 | Tumble guide type gasoline engine air passage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101696663A true CN101696663A (en) | 2010-04-21 |
Family
ID=42141783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910191232A Pending CN101696663A (en) | 2009-10-27 | 2009-10-27 | Tumble guide type gasoline engine air passage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101696663A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147870A (en) * | 2013-03-18 | 2013-06-12 | 力帆实业(集团)股份有限公司 | Engine and cylinder cover thereof |
| CN117685127A (en) * | 2024-02-04 | 2024-03-12 | 潍柴动力股份有限公司 | Engine cylinder cover and engine |
-
2009
- 2009-10-27 CN CN200910191232A patent/CN101696663A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147870A (en) * | 2013-03-18 | 2013-06-12 | 力帆实业(集团)股份有限公司 | Engine and cylinder cover thereof |
| CN117685127A (en) * | 2024-02-04 | 2024-03-12 | 潍柴动力股份有限公司 | Engine cylinder cover and engine |
| CN117685127B (en) * | 2024-02-04 | 2024-05-17 | 潍柴动力股份有限公司 | Engine cylinder cover and engine |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100421 |