CN201568151U - Cylinder head air inlet passage - Google Patents
Cylinder head air inlet passage Download PDFInfo
- Publication number
- CN201568151U CN201568151U CN2009203128181U CN200920312818U CN201568151U CN 201568151 U CN201568151 U CN 201568151U CN 2009203128181 U CN2009203128181 U CN 2009203128181U CN 200920312818 U CN200920312818 U CN 200920312818U CN 201568151 U CN201568151 U CN 201568151U
- Authority
- CN
- China
- Prior art keywords
- intake duct
- air
- engine cylinder
- cylinder head
- air inlet
- 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
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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 utility model discloses a cylinder head air inlet passage, which solves the problem that air and fuel in the conventional cylinder head cannot be mixed sufficiently due to the failure of the air inlet passage of the conventional cylinder head to turn air flows passing through the air inlet passage into more intense tumbling flows. The technical scheme is that the cylinder head air inlet passage is arranged inside a cylinder head and is provided with an air inlet and an air outlet. The utility model is characterized in that the air inlet passage is S-shaped and is obliquely arranged inside the cylinder head.
Description
Technical field
The utility model relates to a kind of automobile engine cylinder head, relates in particular to the intake duct of being located in the automobile engine cylinder head.
Background technique
During motor car engine work, fuel is in the The combustion chamber internal combustion, to promote the piston work done in the cylinder.Fuel need be mixed with air when burning, is provided with the intake duct that leads to the firing chamber in cylinder cap, and is mixed with fuel so that air enters in the firing chamber.In the research and development of modern motor, the coupling of the design of intake duct and intake duct, valve, firing chamber is very important.Desirable air flue design can take into account the flow coefficient and the eddy current of air and roll intensity of flow, to improve the volumetric efficiency of motor, promotes the mixing of oil gas, improves burning, thereby promotes its power character, Economy and emission performance.Direct spray petrol engine in cylinder (GDI) is to design on the basis of gas-duct jetting petrol engine (PFI), because the restriction of high pressure oil rail oil sprayer need rearrange intake duct; In addition since direct spray petrol engine in cylinder be with fuel direct injection in cylinder, so need intake duct that the higher mixing that intensity of flow promotes oil gas of rolling is arranged.
A kind of engine cylinder cap intake duct is disclosed in Chinese utility model patent 200820095217.5, its structure comprises the cylinder cap intake duct, described cylinder cap intake duct one end is to be connected suction port with intake manifold, the other end is the air outlet suitable with air valve seat ring, air flue behind the inlet valve seat ring of described intake duct partly is the arc of flaring, the air outlet horn mouth shape that from inside to outside section area is gradually big.The intake duct of this structure is just curved in the part near the air outlet, it makes air-flow produce the weak effect that rolls stream, can not make air and fuel in the firing chamber fully mixed, can not guarantee that fuel combustion is abundant, both waste the energy, easily in the firing chamber, formed carbon deposit again.
Summary of the invention
For overcoming the above-mentioned defective that available engine cylinder cap intake duct is had, the utility model technical issues that need to address: provide a kind of fuel and air of can making in the The combustion chamber fully mixed, be convenient to fuel saving, reduce the engine cylinder cover intake duct of carbon deposit in the firing chamber.
For solving the problems of the technologies described above the technical solution of the utility model: a kind of engine cylinder cover intake duct, to be located in the cylinder cap, it has suction port and air outlet, it is characterized in that, and described intake duct is " ∫ " shape, and intake duct is arranged in the cylinder cap obliquely.Intake duct is " ∫ " shape, and just the shape of fingering air flue is similar to " ∫ " shape, and in fact, the radian of intake duct each several part is all less relatively.
As preferably, described intake duct section area size everywhere is close.This is meant that intake duct internal diameter difference throughout is little, air-flow is when flowing through intake duct, air-flow can be because of the unexpected variation of intake duct internal diameter produces bigger disturbance, is not convenient to air-flow and forms the comparatively strong stream that rolls, and this provides assurance with fuel is fully mixed for air-flow in the firing chamber.
As preferably, described intake duct is less than the radian of intake duct in air outlet parts in the radian of air inlet parts.Like this, be convenient to intake duct and be connected, air-flow can be entered in the intake duct comparatively swimmingly with inlet manifold.
As preferably, described intake duct internal surface is continuous arc-shaped curved surface.Resistance when the internal surface of arc-shaped curved surface has reduced in the airflow passes intake duct has continuously improved the smoothness of firing chamber air inlet.
As preferably, be provided with protruding hole in the inboard of air outlet on the described intake duct, protruding hole communicates with intake duct inside, and this protruding hole is the shank portion that is used to pass valve.
As preferably, the angle in the airflow direction at place, protruding hole site in the axis in described protruding hole and the intake duct is an acute angle.Angle between them is an acute angle, has reduced the resistance of protruding hole to air-flow in the intake duct.
As preferably, between described protruding internal surface of hole and the intake duct internal surface level and smooth cambered surface transition.Be level and smooth cambered surface transition between them, flow through herein with being convenient to airflow smooth.
Therefore, the beneficial effects of the utility model:
Because the shape of intake duct is " ∫ " shape, air-flow is in entering into intake duct, intake duct will impel air-flow generation break-in continuously, forms the comparatively strong stream that rolls thereby help air-flow to flow out the back from the air outlet in the firing chamber, is convenient to the fully mixed of air-flow and fuel.After air and fuel are fully mixed, be convenient to the abundant burning of fuel, help reducing the loss of fuel on the one hand, also help reducing the carbon deposit in the firing chamber on the other hand, the working life of having improved motor.
Description of drawings
Accompanying drawing 1 is the longitudinal sectional view that has the utility model intake duct cylinder cap.
Accompanying drawing 2 is structural representations of the utility model engine cylinder cover intake duct.
Embodiment
See accompanying drawing, the utility model engine cylinder cover intake duct is located in the cylinder cap 1 obliquely, and it has suction port 3 and air outlet 4.Wherein suction port 3 is to be used for being connected with inlet manifold, and air outlet 4 is to be used for matching with valve 5 seat rings.Air-flow directly enters in the firing chamber 6 after intake duct 2 interior outflows, and mixed mutually with the fuel that is spray pattern.
The shape of intake duct 2 is " ∫ " shape, and wherein intake duct 2 is less than the radian of intake duct 24 parts in the air outlet in the radian of suction port 3 parts.
Position near air outlet 4 on intake duct 2 is provided with protruding hole 7, and protruding hole 7 communicates with intake duct 2 inside, and the shank portion of valve 5 is passed protruding hole 7.The axis in protruding hole 7 and air-flow are acute angle at the angle of the flow direction of 7 positions, protruding hole, and are level and smooth cambered surface transition between protruding hole 7 internal surfaces and intake duct 2 internal surfaces.
Claims (7)
1. an engine cylinder cover intake duct is located in the cylinder cap, and it has suction port and air outlet, it is characterized in that, described intake duct (2) is " ∫ " shape, and intake duct (2) is arranged in the cylinder cap (1) obliquely.
2. engine cylinder cover intake duct according to claim 1 is characterized in that, described intake duct (2) section area size everywhere is close.
3. engine cylinder cover intake duct according to claim 1 and 2 is characterized in that, described intake duct (2) is less than the radian of intake duct (2) (4) part in the air outlet in the radian of suction port (3) part.
4. engine cylinder cover intake duct according to claim 1 and 2 is characterized in that, described intake duct (2) internal surface is continuous arc-shaped curved surface.
5. engine cylinder cover intake duct according to claim 1 and 2 is characterized in that, the inboard that described intake duct (2) is gone up in the air outlet (4) is provided with protruding hole (7), and protruding hole (7) communicate with intake duct (2) inside.
6. engine cylinder cover intake duct according to claim 5 is characterized in that, the angle in the airflow direction of position, protruding hole (7) in the axis in described protruding hole (7) and the intake duct (2) is an acute angle.
7. engine cylinder cover intake duct according to claim 5 is characterized in that, is level and smooth cambered surface transition between described protruding hole (7) internal surface and intake duct (2) internal surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203128181U CN201568151U (en) | 2009-10-20 | 2009-10-20 | Cylinder head air inlet passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203128181U CN201568151U (en) | 2009-10-20 | 2009-10-20 | Cylinder head air inlet passage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201568151U true CN201568151U (en) | 2010-09-01 |
Family
ID=42660436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203128181U Expired - Fee Related CN201568151U (en) | 2009-10-20 | 2009-10-20 | Cylinder head air inlet passage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201568151U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486034A (en) * | 2019-01-29 | 2020-08-04 | 长城汽车股份有限公司 | Engine air inlet channel and engine |
-
2009
- 2009-10-20 CN CN2009203128181U patent/CN201568151U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486034A (en) * | 2019-01-29 | 2020-08-04 | 长城汽车股份有限公司 | Engine air inlet channel and engine |
| CN111486034B (en) * | 2019-01-29 | 2021-10-15 | 长城汽车股份有限公司 | Engine air inlet channel and engine |
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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: 20100901 Termination date: 20131020 |