CN111535934A - Air inlet channel capable of enhancing gas flow, air inlet valve, piston and engine - Google Patents
Air inlet channel capable of enhancing gas flow, air inlet valve, piston and engine Download PDFInfo
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- CN111535934A CN111535934A CN202010531447.7A CN202010531447A CN111535934A CN 111535934 A CN111535934 A CN 111535934A CN 202010531447 A CN202010531447 A CN 202010531447A CN 111535934 A CN111535934 A CN 111535934A
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- air inlet
- piston
- valve
- intake duct
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- 230000002708 enhancing effect Effects 0.000 title claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims abstract description 33
- 230000007704 transition Effects 0.000 claims abstract description 9
- 238000001125 extrusion Methods 0.000 abstract description 2
- 230000035515 penetration Effects 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000739 chaotic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4235—Shape or arrangement of intake or exhaust channels in cylinder heads of intake channels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
- F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
- F02B31/06—Movable means, e.g. butterfly valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention provides an air inlet channel capable of enhancing gas flow, an air inlet valve, a piston and an engine, wherein the engine comprises the air inlet channel, the air inlet valve and the piston, the air inlet channel is arranged on a cylinder cover, the air inlet valve is movably arranged on the cylinder cover and can enable the air inlet channel to be communicated with or closed off a combustion chamber, the piston is movably arranged in the combustion chamber, a spiral protrusion is arranged on the inner wall of the air inlet channel, the valve surface of the air inlet valve comprises two convex rings and two concave rings, the concave rings and the convex rings are arranged at intervals and are in circular arc transition, and a plurality of protrusions which are closely arranged are arrayed on the top surface of the piston. The invention realizes the mutual penetration of vortex, tumble, extrusion flow and turbulent flow in the air inlet and combustion process through the mutual matching design of the air inlet passage, the air inlet valve and the piston, thereby improving the combustion efficiency and the engine performance to the maximum extent.
Description
Technical Field
The invention belongs to the technical field of engines, and particularly relates to an air inlet channel, an air inlet valve, a piston and an engine capable of enhancing air flow.
Background
The air movement in the engine cylinder has a decisive influence on the mixture formation and the combustion process, whereas the air movement in the cylinder is usually influenced by the structure of the intake duct, the intake valve, the cylinder head top and the piston top.
In the specification of japanese patent application CN 201680007804.1, which is directed to china, there is disclosed an intake port structure of an engine, the intake port having an intake port connected to a combustion chamber of the engine; and an annular seat ring provided in a region of the intake port facing the combustion chamber, wherein, in an inner surface of the intake port continuous to an upstream side of the inner surface of the seat ring as viewed in a plan view from the combustion chamber side in a direction of an axial center of the seat ring, an inner surface matching portion located on the same plane as the inner surface of the seat ring is provided on a rear end side away from the axial center of the cylinder bore, and a protruding portion protruding inward with respect to the inner surface of the seat ring is provided on any other portion, and a cross-sectional area of a flow path at a portion where the protruding portion is located is made smaller than a cross-sectional area of the flow path of the seat ring.
The specification of the Chinese invention patent CN 20191039388.4 discloses a diesel engine air inlet valve for enhancing air inlet vortex, which comprises a valve rod and a valve surface, wherein a valve rod guide vane is arranged on the valve rod, a valve surface guide vane is arranged on the valve surface, the valve rod guide vane is tangentially attached to the surface curved surface of the valve rod, the valve surface guide vane is tangentially attached to the surface curved surface of the valve surface, the valve rod guide vane vertically faces downwards along the valve rod and has a torsion angle, the valve surface guide vane has a radian, and the valve rod guide vane is rigidly connected with the valve surface guide vane.
However, the prior art only considers improving the intake air flow pattern from a certain aspect to enhance the intake swirl or tumble ratio, and does not consider fully playing the coordination effect of the intake passage, the intake valve and the piston on the improvement of the intake air flow pattern during the engine intake process to further enhance the air flow.
Disclosure of Invention
In view of the above prior art, the present invention provides an intake duct, an intake valve, a piston and an engine capable of enhancing gas flow.
In order to solve the technical problem, the invention provides an air inlet channel capable of enhancing air flow, wherein the air inlet channel is arranged on a cylinder cover and can be communicated with a combustion chamber, and a spiral protrusion is arranged on the inner wall of the air inlet channel.
Preferably, the height of the spiral protrusion is set to 1/3 of the inner diameter of the air inlet, and the pitch of the spiral protrusion is set to 2 times of the inner diameter of the air inlet.
The invention also provides an air inlet valve capable of enhancing gas flow, wherein the air inlet valve is movably arranged on the cylinder cover and can enable the air inlet channel to be communicated with or closed off the combustion chamber, the air inlet valve comprises a valve rod, a valve face and a valve seat, the valve face of the air inlet valve comprises two convex rings and two concave rings, and the concave rings and the convex rings are arranged alternately and are in arc transition.
Preferably, the axial heights of the concave ring and the convex ring are set to be 1/4 of the axial height of the valve face, and the maximum radial thickness of the convex ring is set to be 1/10 of the inner diameter of the air inlet channel.
The invention also provides a piston capable of enhancing gas flow, wherein the piston is movably arranged in the combustion chamber, and a plurality of closely-arranged bulges are arrayed on the top surface of the piston.
Preferably, the protrusions on the top surface of the piston are pyramid-shaped protrusions.
The invention also provides an engine capable of enhancing gas flow, which comprises an air inlet channel, an air inlet valve and a piston, wherein the air inlet channel is arranged on the cylinder cover, the air inlet valve is movably arranged on the cylinder cover and can enable the air inlet channel to be communicated with or closed off the combustion chamber, the piston is movably arranged in the combustion chamber, a spiral protrusion is arranged on the inner wall of the air inlet channel, the valve surface of the air inlet valve is arranged to comprise two convex rings and two concave rings, the concave rings and the convex rings are arranged alternately and are in circular arc transition, and a plurality of protrusions which are closely arranged are arrayed on the top surface of the piston.
Preferably, the height of the spiral protrusion is set to 1/3 of the inner diameter of the air inlet, and the pitch of the spiral protrusion is set to 2 times of the inner diameter of the air inlet.
Preferably, the axial heights of the concave ring and the convex ring are set to be 1/4 of the axial height of the valve face, and the maximum radial thickness of the convex ring is set to be 1/10 of the inner diameter of the air inlet channel.
Preferably, the protrusions on the top surface of the piston are pyramid-shaped protrusions.
Compared with the prior art, the invention has the beneficial effects that:
1. the spiral type bulge is arranged in the air inlet channel, so that the air inlet flow can form axial rotating air flow with certain strength in the air inlet channel, namely air inlet vortex.
2. The valve surface of the air inlet valve is arranged to comprise two convex rings and two concave rings, and the concave rings and the convex rings are arranged alternately and are in arc transition, so that the air inlet flow can form radial rotating air flow with certain strength at the air inlet valve, namely air inlet tumble and can be matched with the air inlet swirl to form a tumble; meanwhile, when the piston is close to the top dead center, the large-scale rolling vortex can be broken into a plurality of small-scale vortexes, namely strong turbulent motion is formed, so that the turbulent intensity and turbulent kinetic energy can be further increased through the matching design of the air inlet channel and the air inlet valve, the flame propagation speed can be greatly increased, the combustion efficiency of mixed gas is improved, and the performance of an engine is improved.
3. The plurality of pyramid-shaped protrusions which are closely arranged are arranged on the top surface of the piston in an array mode, so that intake air flow can reflect and collide with each other to form chaotic air flow which rotates and flows disorderly, and stronger flow squeezing motion can be formed at the later stage of a compression stroke, so that the turbulence intensity in a combustion chamber can be further enhanced, and the rapid combustion of mixed gas is promoted; meanwhile, through the mutually matched design of the air inlet passage, the air inlet valve and the piston, the mutual permeation of vortex, tumble, extrusion flow and turbulence can be realized in the air inlet and combustion processes, so that the combustion efficiency and the engine performance can be improved to the maximum extent.
Drawings
FIG. 1 is a schematic diagram of an inlet valve for enhancing gas flow in accordance with the present invention.
FIG. 2 is a schematic view of a pyramidal protrusion on the top surface of a piston for enhancing gas flow according to the present invention.
Illustration of the drawings: 11-valve stem, 12-valve face, 121-convex ring, 122-concave ring, 13-valve seat and 2-pyramid-shaped protrusion.
Detailed Description
The invention will be further described with reference to the drawings and preferred embodiments.
First, the present invention provides an intake duct that can enhance the flow of gas, which is provided at the top of a cylinder head, and which can communicate with an engine combustion chamber provided on a cylinder block. The inner wall of the air inlet is also provided with a spiral protrusion, the height of the spiral protrusion is set to be 1/3 of the inner diameter of the air inlet, and the pitch of the spiral protrusion is set to be 2 times of the inner diameter of the air inlet, so that the air inlet can form axial rotating air flow with certain intensity, namely air inlet vortex.
The invention also provides an air inlet valve capable of enhancing gas flow, wherein the air inlet valve is movably arranged on the cylinder cover through a cam shaft, a valve spring and other valve mechanisms, and an air inlet passage can be communicated with or closed off from the combustion chamber of the engine through opening or closing the air inlet of the air inlet valve. As shown in fig. 1, the intake valve comprises a valve stem 11, a valve face 12 and a valve seat 13, wherein the valve face 12 of the intake valve is arranged to comprise two convex rings 121 and two concave rings 122, and the concave rings 122 are arranged at intervals with the convex rings 121 and have smooth transition in circular arc; meanwhile, the axial heights of the concave ring 122 and the convex ring 121 are set to be 1/4 of the axial height of the valve face 12, and the maximum radial thickness of the convex ring 121 is set to be 1/10 of the inner diameter of the air inlet channel, so that the air inlet flow can form radial rotating flow with certain intensity, namely air inlet tumble flow at the valve face of the air inlet valve.
The invention also provides a piston capable of enhancing gas flow, which is movably arranged in the combustion chamber of the engine through a crankshaft connecting rod mechanism and can do linear reciprocating motion in the combustion chamber. As shown in fig. 2, a plurality of pyramid-shaped protrusions 2 are closely arranged on the top surface of the piston, the side length of a square on the bottom surface of each pyramid-shaped protrusion 2 is designed to be 2 mm, the height of each pyramid-shaped protrusion 2 is designed to be 1 mm, and the distance between the edge of each pyramid-shaped protrusion 2 and the wall of the cylinder is 5 mm, so that intake air flows can reflect and collide with each other on the top surface of the piston to form chaotic air flows which rotate and flow disorderly, and stronger squeezing movement can be formed at the later stage of a compression stroke, so that the turbulence intensity in a combustion chamber can be further enhanced, and the rapid combustion of mixed air is promoted.
Finally, the invention also provides an engine capable of enhancing gas flow, which comprises an air inlet channel, an air inlet valve and a piston. The air inlet channel is arranged at the top of the cylinder cover, a spiral protrusion is arranged on the inner wall of the air inlet channel, the height of the spiral protrusion is 1/3 of the inner diameter of the air inlet channel, and the screw pitch of the spiral protrusion is 2 times of the inner diameter of the air inlet channel; the intake valve is movably mounted on a cylinder head through a valve mechanism, and can enable an intake passage to be communicated with or closed off an engine combustion chamber through opening or closing the intake port of the intake valve, a valve face 12 of the intake valve is arranged to comprise two convex rings 121 and two concave rings 122, the concave rings 122 and the convex rings 121 are arranged alternately and are in circular arc smooth transition, the axial heights of the concave rings 122 and the convex rings 121 are both set to be 1/4 of the axial height of the valve face 12, and the maximum radial thickness of the convex rings 121 is set to be 1/10 of the inner diameter of the intake passage; the piston is movably arranged in a combustion chamber of an engine through a crankshaft connecting rod mechanism, a plurality of pyramid-shaped protrusions 2 which are closely arranged are arrayed on the top surface of the piston, the side length of a square on the bottom surface of each pyramid-shaped protrusion 2 is designed to be 2 mm, the height of each pyramid-shaped protrusion 2 is designed to be 1 mm, and the distance from the edge of each pyramid-shaped protrusion 2 to the cylinder wall is 5 mm. According to the invention, the spiral bulge is arranged in the air inlet channel, so that the air inlet flow can form axial rotating air flow with certain strength in the air inlet channel, namely air inlet vortex; then, the valve surface of the air inlet valve is arranged to comprise two convex rings and two concave rings, and the concave rings and the convex rings are arranged alternately and are in arc transition, so that the air inlet airflow can form radial rotating airflow with certain intensity at the air inlet valve, namely air inlet tumble, and the air inlet vortex from the air inlet channel can form a tumble vortex at the air inlet valve; finally, through setting up a plurality of pyramid type arch of closely arranging at piston top surface array, not only can make the air current of admitting air reflect each other and collide mutually like this, make it form disorder rotation and the chaos air current of flow, can form stronger crowded flow motion in compression stroke later stage moreover, can realize the infiltration of vortex, tumble, crowded flow and torrent in admitting air and combustion process through the cooperation design of intake duct, admission valve, piston promptly to can improve combustion efficiency and engine performance by the at utmost.
The foregoing merely represents preferred embodiments of the invention, which are described in some detail and detail, and therefore should not be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a can strengthen gaseous intake duct that flows, the intake duct sets up on the cylinder head and can communicate its characterized in that with the combustion chamber: and a spiral protrusion is arranged on the inner wall of the air inlet channel.
2. The inlet of claim 1, wherein: the bellied height of screw type sets up to 1/3 of intake duct internal diameter, the bellied pitch of screw type sets up to 2 times of intake duct internal diameter.
3. The utility model provides a can strengthen gaseous mobile admission valve, admission valve movable mounting just can make intake duct and combustion chamber intercommunication or close on the cylinder head, the admission valve includes valve rod, valve face and disk seat, its characterized in that: the valve surface of the air inlet valve is arranged to comprise two convex rings and two concave rings, and the concave rings and the convex rings are arranged alternately and are in circular arc transition.
4. An enhanced gas flow inlet valve as claimed in claim 3, wherein: the axial height of concave ring and bulge loop all sets up to valve face axial height 1/4, the biggest radial thickness of bulge loop sets up to the 1/10 of intake duct internal diameter.
5. A piston for enhancing gas flow, said piston being movably mounted in a combustion chamber, said piston characterized by: the top surface of the piston is provided with a plurality of closely arranged bulges in an array.
6. A piston for enhancing gas flow as claimed in claim 5, wherein: the protrusions on the top surface of the piston are pyramid-shaped protrusions.
7. The utility model provides a can strengthen engine that gas flows, includes intake duct, admission valve and piston, the intake duct sets up on the cylinder head, admission valve movable mounting just can make on the cylinder head the intake duct communicates or closes with the combustion chamber, piston movable mounting is in the combustion chamber, its characterized in that: be provided with the screw-tupe arch on the inner wall of intake duct, the valve face of admission valve sets up to including twice bulge loop and twice concave ring, concave ring sets up and the circular arc transition alternately with the bulge loop the top surface array of piston has the arch of a plurality of range closely.
8. An engine for enhancing gas flow as claimed in claim 7, wherein: the bellied height of screw type sets up to 1/3 of intake duct internal diameter, the bellied pitch of screw type sets up to 2 times of intake duct internal diameter.
9. An engine for enhancing gas flow as claimed in claim 7, wherein: the axial height of concave ring and bulge loop all sets up to valve face axial height 1/4, the biggest radial thickness of bulge loop sets up to the 1/10 of intake duct internal diameter.
10. An engine for enhancing gas flow as claimed in claim 7, wherein: the protrusions on the top surface of the piston are pyramid-shaped protrusions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010531447.7A CN111535934A (en) | 2020-06-11 | 2020-06-11 | Air inlet channel capable of enhancing gas flow, air inlet valve, piston and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010531447.7A CN111535934A (en) | 2020-06-11 | 2020-06-11 | Air inlet channel capable of enhancing gas flow, air inlet valve, piston and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111535934A true CN111535934A (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010531447.7A Pending CN111535934A (en) | 2020-06-11 | 2020-06-11 | Air inlet channel capable of enhancing gas flow, air inlet valve, piston and engine |
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| Country | Link |
|---|---|
| CN (1) | CN111535934A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0067700A1 (en) * | 1981-06-15 | 1982-12-22 | Deere & Company | Internal combustion engine with helical intake port |
| EP0460901A2 (en) * | 1990-06-06 | 1991-12-11 | The Welding Institute | Surfacing a convex substrate |
| KR19980017277A (en) * | 1996-08-30 | 1998-06-05 | 김영석 | Poppet Valves for Vehicle Engines |
| DE102007042419A1 (en) * | 2007-09-06 | 2009-02-19 | Daimler Ag | Gasoline engine for vehicle, has cylinder in which piston moves longitudinally, for implementing operating cycle comprising multiple stroke between lower and upper dead centers |
| CN104763551A (en) * | 2015-04-01 | 2015-07-08 | 吉林大学 | Piston with combustion chamber in dual-fuel engine |
| CN109899174A (en) * | 2019-03-25 | 2019-06-18 | 天津大学 | A kind of combustion system for using gasoline ignition engine instead on the basis of diesel engine |
| CN212563472U (en) * | 2020-06-11 | 2021-02-19 | 汉腾新能源汽车科技有限公司 | Engine capable of enhancing gas flow |
-
2020
- 2020-06-11 CN CN202010531447.7A patent/CN111535934A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0067700A1 (en) * | 1981-06-15 | 1982-12-22 | Deere & Company | Internal combustion engine with helical intake port |
| EP0460901A2 (en) * | 1990-06-06 | 1991-12-11 | The Welding Institute | Surfacing a convex substrate |
| KR19980017277A (en) * | 1996-08-30 | 1998-06-05 | 김영석 | Poppet Valves for Vehicle Engines |
| DE102007042419A1 (en) * | 2007-09-06 | 2009-02-19 | Daimler Ag | Gasoline engine for vehicle, has cylinder in which piston moves longitudinally, for implementing operating cycle comprising multiple stroke between lower and upper dead centers |
| CN104763551A (en) * | 2015-04-01 | 2015-07-08 | 吉林大学 | Piston with combustion chamber in dual-fuel engine |
| CN109899174A (en) * | 2019-03-25 | 2019-06-18 | 天津大学 | A kind of combustion system for using gasoline ignition engine instead on the basis of diesel engine |
| CN212563472U (en) * | 2020-06-11 | 2021-02-19 | 汉腾新能源汽车科技有限公司 | Engine capable of enhancing gas flow |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200814 |