CN210483874U - Air inlet channel of engine and engine - Google Patents
Air inlet channel of engine and engine Download PDFInfo
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- CN210483874U CN210483874U CN201921437656.4U CN201921437656U CN210483874U CN 210483874 U CN210483874 U CN 210483874U CN 201921437656 U CN201921437656 U CN 201921437656U CN 210483874 U CN210483874 U CN 210483874U
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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
An air intake duct of an engine and an engine, the air intake duct comprising: an inlet section; the outlet section is connected with the inlet section, one end of the outlet section, which is far away from the inlet section, is used for being connected with an air cylinder, the lower side wall of the outlet section is provided with an arc-shaped surface, and the distance between the lower side wall and the axis of the air inlet channel is greater than the distance between the upper side wall of the outlet section and the axis of the air inlet channel; wherein the ratio of the length of the inlet section (1) to the length of the outlet section (2) is A, satisfying: 1/3 is less than or equal to A is less than or equal to 1/2. The utility model discloses an air inlet duct of engine, the export section of air inlet duct designs into gradual change formula tripe shape structure, can guide the air current to the cylinder center flow, restraines the backward flow, promotes the tumble flow intensity in the jar for the mixture of oil and gas is more even, strengthens the combustion effect, and then promotes the dynamic nature and the economic nature of engine.
Description
Technical Field
The utility model relates to an intake duct of engine and engine that has this intake duct.
Background
At present, the inlets of air inlet channels of many engines are designed to be straight quadrangles, the effective sectional area of the fluid flowing through actually is reduced, the actual circulating air amount in unit time is reduced, the air charging efficiency of the engine is low, the molded lines of the air inlet channels are linear, the air flowing through the air valves is blocked, reverse airflow is formed in cylinders, the forward tumble strength in the cylinders is reduced, the uneven mixing of oil and gas is caused, the combustion is slow, the dynamic property and the economical property of the engine are influenced finally, and an improved space exists.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is directed to an engine intake duct, which has a large intake flow, and can ensure smooth airflow entering the combustion chamber, thereby improving the tumble flow in the cylinder.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
an intake duct of an engine, comprising: an inlet section; the outlet section is connected with the inlet section, one end of the outlet section, which is far away from the inlet section, is used for being connected with an air cylinder, the lower side wall of the outlet section is provided with an arc-shaped surface, and the distance between the lower side wall and the axis of the air inlet channel is greater than the distance between the upper side wall of the outlet section and the axis of the air inlet channel; wherein the ratio of the length of the inlet section to the length of the outlet section is A, satisfying: 1/3 is less than or equal to A is less than or equal to 1/2.
Further, the outlet section comprises: the air cylinder comprises a first section, a second section and a third section, wherein the first section is connected with the inlet section, two ends of the second section are respectively connected with the first section and the third section, the third section is used for being connected with the air cylinder, and the curvature radius of the first section and the curvature radius of the third section are both larger than that of the second section.
Further, the radius of curvature of the first section is greater than the radius of curvature of the third section.
Further, the length of the first segment is d1, the length of the second segment is d2, and the length of the third segment is d3, so that: d3 is not less than d2 and not more than d 1.
Further, the lower lateral wall of second section with the maximum distance of the axis of intake duct is L1, the last lateral wall of second section with the distance of the axis of intake duct is L2, satisfies: L1-L2 is more than or equal to 4mm and less than or equal to 5 mm.
Further, the inlet section is linear and has an arcuate cross-section, and the cross-section is not circular.
Further, the inlet section has an elliptical cross-section.
Further, the major axis of the elliptical cross-section is parallel to a horizontal plane, and the minor axis of the elliptical cross-section intersects the horizontal plane.
Compared with the prior art, the intake duct of engine have following advantage:
according to the utility model discloses the intake duct of engine, the export section of intake duct designs into gradual change formula tripe shape structure, can guide the air current to the cylinder center flow, restraines the backward flow, promotes the tumble strength in the jar for oil-gas mixture's is more even, reinforcing combustion effect, and then promotes the dynamic nature and the economic nature of engine.
Another object of the present invention is to provide an engine, including: the air inlet passage of engine of any one above-mentioned embodiment is provided with intake valve, cylinder, intake valve with the cylinder all with export the section links to each other.
Furthermore, the included angle between the axis of the air inlet channel and the axis of the throttle valve is α, and the included angle is equal to or larger than 40 degrees and equal to or smaller than α degrees and equal to or smaller than 50 degrees.
The engine and the air inlet channel have the same advantages compared with the prior art, and the detailed description is omitted.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic structural diagram of an engine according to an embodiment of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
fig. 3 is a schematic cross-sectional view of an inlet section of an air intake duct of an engine according to an embodiment of the present invention.
Description of reference numerals:
the engine (1000) is provided with a motor,
the air-intake duct 100 is provided with,
inlet section 1, outlet section 2, first section 21, second section 22, third section 23,
a cylinder 101, and an intake valve 102.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, a lower side wall of a portion of the air inlet 100 connected to the cylinder 101 has an arc surface deviating from an axis, which is beneficial to reducing reverse flow of air flow, so as to promote tumble flow in the cylinder, achieve the purpose of outputting high power and high torque by the engine 1000, and promote fuel economy of the whole vehicle.
As shown in fig. 1-2, an intake duct 100 of an engine 1000 according to an embodiment of the present invention includes: an inlet section 1 and an outlet section 2.
As shown in fig. 1-2, the air inlet 100 is disposed to be inclined from top to bottom, i.e., one end of the air inlet 100 is higher than the other end. The inlet section 1 is connected with the outlet section 2, as shown in fig. 1-2, the lower end of the inlet section 1 is connected with the upper end of the outlet section 2, and the inlet section 1 and the outlet section 2 are integrally formed, so that the joint of the inlet section 1 and the outlet section 2 has high connection strength, and the joint of the inlet section 1 and the outlet section 2 is prevented from being broken after the engine 1000 is used for a long time, so that the structure of the air inlet passage 100 is kept stable, and the engine 1000 is ensured to safely and reliably run.
The upper end of the inlet section 1 is communicated with the outside, so that external air flow can enter the air inlet channel 100 from the upper end of the inlet section 1, and the end, away from the inlet section 1, of the outlet section 2 is used for being connected with the cylinder 101, so that the air flow entering from the upper end of the inlet section 1 sequentially flows into the cylinder 101 through the inlet section 1 and the outlet section 2, as shown in fig. 2, the lower end of the outlet section 2 is connected with a combustion chamber of the cylinder 101, therefore, the air flow can enter the combustion chamber through the air inlet channel 100 to perform combustion reaction with fuel, the normal operation of piston movement is ensured, and the engine 1000 can output torque.
As shown in fig. 2, the lower side wall of the outlet section 2 has an arc-shaped surface, and the distance between the lower side wall and the axis of the inlet channel 100 is greater than the distance between the upper side wall of the outlet section 2 and the axis of the inlet channel 100, that is, the lower side wall of the outlet section 2 is bent in the direction away from the axis of the inlet channel 100 to form a flow guide surface on the lower side wall of the outlet section 2, as shown in fig. 2, the overall structure of the outlet section 2 is formed in a gradually changing fish belly shape, so that after the air flow in the inlet section 1 flows into the outlet section 2, the air flow flows along the flow guide surface to the lower end of the outlet section 2, and the air flow.
In the flowing process of the air flow, when the air flow enters the outlet section 2 from the inlet section 1, the air flow flows along the direction parallel to the axis of the air inlet channel 100, after the air flow enters the upper end of the outlet section 2, the air flow flows along the guide surface towards the direction away from the axis of the air inlet channel 100, when the air flow flows to the middle of the outlet section 2, the flow direction of the air flow is gradually parallel to the axis of the air inlet channel 100, when the air flow flows through the middle of the outlet section 2, the air flow gradually flows along the guide surface towards the direction close to the axis of the air inlet channel 100 and flows to the lower end of the outlet section 2. As shown in fig. 2, the included angle between the axis of the air inlet passage 100 and the end surface of the air cylinder 101 is greater than the included angle between the lower side wall surface of the lower end of the outlet section 2 and the end surface of the air cylinder 101, so that after the air flow flows out from the outlet section 2, the included angle between the flow direction of the air flow and the cross section of the air cylinder 101 is smaller, and therefore the tumble strength in the air cylinder can be improved, the air-fuel mixture is more uniform, the combustion effect is enhanced, and the power performance and the economy of the engine 1000 are further.
According to the utility model discloses intake duct 100, the export section 2 of intake duct 100 designs into gradual change formula tripe shape structure, can guide the air current to cylinder 101 center flow, restraines the backward flow, promotes the tumble strength in the jar for oil-gas mixture's is more even, reinforcing combustion effect, and then promotes engine 1000's dynamic nature and economic nature.
In some embodiments, as shown in fig. 2, the outlet section 2 comprises: a first section 21, a second section 22 and a third section 23.
As shown in fig. 2, the first section 21 is connected to the outlet section 2, the upper end of the first section 21 is connected to the lower end of the outlet section 2, and the two ends of the second section 22 are respectively connected to the first section 21 and the third section 23, as shown in fig. 2, the lower end of the first section 21 is connected to the upper end of the second section 22, the lower end of the second section 22 is connected to the upper end of the third section 23, the third section 23 is used for being connected to the cylinder 101, and the lower end of the third section 23 is connected to the cylinder 101, wherein the first section 21, the second section 22, and the third section 23 can be integrally formed to ensure the connection strength among the first section 21, the second section 22, and the third section 23, avoid the fracture of the connection part, and improve the structural.
The curvature radius of the first section 21 and the curvature radius of the third section 23 are both larger than the curvature radius of the second section 22, that is, the bending amplitude of the second section 22 is larger than the bending amplitude of the first section 21, and the bending amplitude of the second section 22 is larger than the bending amplitude of the third section 23, so that the guiding effect of the first section 21 and the third section 23 on the airflow is smoother, the guiding angle of the second section 22 on the airflow is larger, that is, the angle change of the airflow in the front and rear flowing directions of the airflow through the second section 22 is larger.
During the passage of the air through the outlet section 2, the air is slowly redirected along the first section 21, the air flowing away from the axis of the inlet 100 and gradually towards the second section 22. After flowing to the second section 22, the flow direction of the airflow is changed rapidly, the flow direction of the airflow is changed from a direction away from the axis of the air inlet 100 to a direction close to the axis of the air inlet 100, and the flow direction of the airflow is parallel to the axis when the airflow is at the most middle part of the second section 22. After the air flows to the third section 23, the air flow changes direction slowly along the third section 23, the air flow flows towards the direction close to the axis of the air inlet channel 100 and gradually flows to the cylinder 101, and when the air flow flows out from the third section 23, the included angle between the flow direction of the air flow and the end surface of the cylinder 101 is small.
Like this, carry out the water conservancy diversion to the air current through first section 21, second section 22 and third section 23 in proper order, can make the air current that gets into in the cylinder 101 be favorable to improving the tumble strength in the jar for the air-fuel mixture is more even, strengthens the combustion effect, and then promotes engine 1000's dynamic nature and economic nature.
In some embodiments, the radius of curvature of the first section 21 is greater than the radius of curvature of the third section 23, that is, the bending amplitude of the third section 23 is greater than the bending amplitude of the first section 21, so that the third section 23 has a more significant guiding effect on the airflow relative to the first section 21, and thus, after the airflow flows out from the third section 23, the airflow flows in a direction more parallel to the end surface of the cylinder 101, thereby enhancing the tumble strength in the cylinder.
In some embodiments, the length of the first segment 21 is d1, the length of the second segment 22 is d2, and the length of the third segment 23 is d3, satisfying: d2 is not less than d3 is not less than d1, that is, the length of the first section 21 is greater than that of the third section 23, and the length of the third section 23 is greater than that of the second section 22, so that the airflow enters the first section 21 and slowly flows to the second section 22, and after being guided greatly in the second section 22, the airflow slowly flows to the cylinder 101 through the third section 23, and the airflow direction is effectively changed. Can be so that the air current that gets into in the cylinder 101 is favorable to improving the tumble strength in the jar for the more even of oil-gas mixture, reinforcing combustion effect, and then promote engine 1000's dynamic nature and economic nature.
Wherein, the maximum distance between the lower side wall of the second section 22 and the axis of the air inlet channel 100 is L1, as shown in fig. 2, the distance between the middle part of the second section 22 and the axis of the air inlet channel 100 is the maximum, and the distance between the upper side wall of the second section 22 and the axis of the air inlet channel 100 is L2, which satisfies the following conditions: L1-L2-5 mm, e.g., L1-L2-4.2 mm, or L1-L2-4.5 mm, or L1-L2-4.7 mm, i.e., the maximum depth of depression of the lower side wall of the second section 22 in the radial direction away from the axis of the inlet duct 100 is not more than 5mm and not less than 4 mm. Like this, guaranteeing that export section 2 can carry out the condition of effectively leading to the air current, keeping export section 2's radial dimension at reasonable within range, avoid intake duct 100 along the too big space that radially occupies, prevent intake duct 100 and other spare parts mutual interference, the holistic overall arrangement of engine 1000 of being convenient for.
As shown in fig. 1 and 2, the inlet section 1 is linear, so that the airflow can enter the cylinder 101 more directly, the air resistance is reduced, the tumble ratio is improved, and the in-cylinder tumble efficiency is improved.
As shown in fig. 3, the inducer 1 has an arc-shaped cross-section and the cross-section is not circular, so that the effective cross-section of the inducer 1 can be maximized compared with the cross-section of a rectangular cross-section, the gas flow loss can be reduced, and the optimal conditions can be provided for the gas circulation, so that more gas can enter the combustion chamber, and the more the air amount enters the combustion chamber, the more the performance of the engine 1000 can be improved.
The inlet section 1 adopts an arc-shaped cross section, so that the corner part of the whole structure can be improved, the effective sectional area is enlarged, and the loss of the effective sectional area is avoided, thereby maximizing the air quantity flowing into the combustion chamber and improving the performance of the time engine 1000.
As shown in fig. 3, the inducer 1 has an elliptical cross-section, whereby the corner portions of the overall structure can be improved, the effective sectional area can be enlarged, and the loss of the effective sectional area can be avoided.
Wherein, the major axis of oval cross-section is parallel with the horizontal plane, the minor axis of oval cross-section intersects with the horizontal plane, like this, inducer 1 is less than along the size of horizontal plane along vertical size, therefore, the great size of horizontal direction can make inducer 1 have great cross-sectional area, increase inducer 1's air intake flow, can make inducer 1 top, the space of below more loose simultaneously, be convenient for the installation of other structures, as shown in fig. 1, intake valve 102 locates the top of admission line, like this, the admission line can rationally dodge with intake valve 102, be convenient for the holistic overall arrangement of engine 1000.
In some embodiments, the ratio of the length of the inducer 1 to the length of the exducer 2 is a, satisfying: 1/3 ≦ A ≦ 1/2, such as A ≦ 0.35, or A ≦ 0.4, or even A ≦ 0.45, i.e., the length of outlet section 2 is greater than the length of inlet section 1. Like this, get into the back at a large amount of air currents by induction zone 1, have export section 2 long enough and lead to the air current to make the air current can be in order to flow into cylinder 101 with the less contained angle of cylinder 101 terminal surface, do benefit to the tumble strength that improves the jar, make the more even of oil-gas mixture, the reinforcing combustion effect, and then promote engine 1000's dynamic nature and economic nature.
The utility model also provides an engine 1000.
According to the utility model discloses engine 1000, intake duct 100 of the engine 1000 including intake valve 102, cylinder 101 and above-mentioned embodiment, as shown in FIG. 1, intake valve 102 and cylinder 101 all link to each other with export section 2, the central axis of intake duct 100 is α with the contained angle of the axis of intake valve 102, satisfy α is not more than 40 and is not more than 50, for example α is 45 degrees from this, can improve the efficiency that produces the tumble flow in the cylinder 101, and cooperate the roof ridge combustion chamber structure, can reach the purpose of higher tumble ratio, promote the fuel economy and the dynamic property of whole car.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An intake duct (100) of an engine (1000), comprising:
an inlet section (1);
the outlet section (2), the inlet section (1) is connected with the outlet section (2), one end of the outlet section (2) departing from the inlet section (1) is used for being connected with a cylinder (101), the lower side wall of the outlet section (2) is provided with an arc-shaped surface, and the distance between the lower side wall and the axis of the air inlet channel (100) is greater than the distance between the upper side wall of the outlet section (2) and the axis of the air inlet channel (100);
wherein the ratio of the length of the inlet section (1) to the length of the outlet section (2) is A, satisfying: 1/3 is less than or equal to A is less than or equal to 1/2.
2. Inlet duct (100) of an engine (1000) according to claim 1, characterized in that the outlet section (2) comprises: the air cylinder comprises a first section (21), a second section (22) and a third section (23), wherein the first section (21) is connected with the inlet section (1), two ends of the second section (22) are respectively connected with the first section (21) and the third section (23), the third section (23) is used for being connected with the air cylinder (101), and the curvature radius of the first section (21) and the curvature radius of the third section (23) are both larger than that of the second section (22).
3. The intake duct (100) of an engine (1000) according to claim 2, characterized in that the radius of curvature of the first section (21) is greater than the radius of curvature of the third section (23).
4. The intake duct (100) of an engine (1000) according to claim 2, characterized in that the first segment (21) has a length d1, the second segment (22) has a length d2, and the third segment (23) has a length d3, satisfying: d3 is not less than d2 and not more than d 1.
5. The intake duct (100) of the engine (1000) according to claim 2, wherein a maximum distance between a lower sidewall of the second section (22) and an axis of the intake duct (100) is L1, and a distance between an upper sidewall of the second section (22) and an axis of the intake duct (100) is L2, and satisfies: L1-L2 is more than or equal to 4mm and less than or equal to 5 mm.
6. The intake duct (100) of an engine (1000) according to any of claims 1-5, characterized in that the inducer (1) is rectilinear and in that the inducer (1) has an arcuate cross-section, and in that the cross-section is not circular.
7. The intake duct (100) of an engine (1000) according to claim 6, characterized in that the intake section (1) has an elliptical cross-section.
8. The intake duct (100) of an engine (1000) according to claim 7, characterized in that the major axis of the elliptical cross-section is parallel to a horizontal plane and the minor axis of the elliptical cross-section intersects the horizontal plane.
9. An engine (1000), comprising: an inlet valve (102), a cylinder (101) and an inlet channel (100) of an engine (1000) according to any of claims 1-8, the inlet valve (102) and the cylinder (101) each being connected to an outlet section (2).
10. The engine (1000) of claim 9, characterized in that the axis of the inlet duct (100) and the axis of the inlet valve (102) are at an angle of α, satisfying 40 ° ≦ α ≦ 50 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921437656.4U CN210483874U (en) | 2019-08-30 | 2019-08-30 | Air inlet channel of engine and engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921437656.4U CN210483874U (en) | 2019-08-30 | 2019-08-30 | Air inlet channel of engine and engine |
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| CN210483874U true CN210483874U (en) | 2020-05-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287862A (en) * | 2020-05-13 | 2020-06-16 | 潍柴动力股份有限公司 | Cylinder cover and gas engine |
| CN111287863A (en) * | 2020-05-13 | 2020-06-16 | 潍柴动力股份有限公司 | Cylinder cover and gas engine |
-
2019
- 2019-08-30 CN CN201921437656.4U patent/CN210483874U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287862A (en) * | 2020-05-13 | 2020-06-16 | 潍柴动力股份有限公司 | Cylinder cover and gas engine |
| CN111287863A (en) * | 2020-05-13 | 2020-06-16 | 潍柴动力股份有限公司 | Cylinder cover and gas engine |
| CN111287862B (en) * | 2020-05-13 | 2020-09-29 | 潍柴动力股份有限公司 | Cylinder cover and gas engine |
| CN111287863B (en) * | 2020-05-13 | 2020-09-29 | 潍柴动力股份有限公司 | Cylinder cover and gas engine |
| US11187182B1 (en) | 2020-05-13 | 2021-11-30 | Weichai Power Co., Ltd. | Cylinder head and gas engine |
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