CN109026257B - Variable lift reed valve device - Google Patents
Variable lift reed valve device Download PDFInfo
- Publication number
- CN109026257B CN109026257B CN201811086233.2A CN201811086233A CN109026257B CN 109026257 B CN109026257 B CN 109026257B CN 201811086233 A CN201811086233 A CN 201811086233A CN 109026257 B CN109026257 B CN 109026257B
- Authority
- CN
- China
- Prior art keywords
- valve
- hole
- valve seat
- stop baffle
- plate
- 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.)
- Active
Links
- 235000014676 Phragmites communis Nutrition 0.000 title claims abstract description 13
- 230000001154 acute effect Effects 0.000 claims abstract description 6
- 238000013016 damping Methods 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 7
- 230000006872 improvement Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L15/00—Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups F01L17/00 - F01L29/00
- F01L15/02—Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups F01L17/00 - F01L29/00 with valves other than cylindrical, sleeve, or part-annularly-shaped, e.g. flat D-valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L15/00—Valve-gear or valve arrangements, e.g. with reciprocatory slide valves, other than provided for in groups F01L17/00 - F01L29/00
- F01L15/20—Component parts, details, or accessories, not provided for in preceding subgroups of this main group
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L31/00—Valve drive, valve adjustment during operation, or other valve control, not provided for in groups F01L15/00 - F01L29/00
- F01L31/08—Valve drive or valve adjustment, apart from tripping aspects; Positively-driven gear
- F01L31/18—Valve drive or valve adjustment, apart from tripping aspects; Positively-driven gear specially for rotary or oscillatory valves
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lift Valve (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a variable lift reed valve device, which is characterized by comprising: a valve seat provided with a valve hole; the valve plate is arranged on the valve seat and can cover the valve hole, and the valve plate is provided with a free end and a fixed end fixed with the valve seat; the stop baffle is rotationally connected to the valve seat through the rotating connecting end, the fixed end and the rotating connecting end are positioned on the same side of the valve hole, the stop baffle and the valve plate are arranged at an acute angle, and the angle between the stop baffle and the valve plate is adjustable. The valve plate is provided with the stop baffle, the valve plate is opened due to the pressure difference between the inside and outside of the valve seat, the starting row spacing can be limited due to the position of the stop baffle when the valve plate is opened each time, and the valve plate lift can be adjusted by adjusting the position of the stop baffle because the angle between the stop baffle and the valve plate can be adjusted, so that the problems in the prior art are effectively solved.
Description
Technical Field
The present invention relates to a variable lift reed valve device.
Background
Two-stroke piston engines, because of the lack of a complex intake and exhaust cylinder head system of a four-stroke piston engine, are prone to insufficient mixing time in the crankcase at high speeds due to the close proximity of conventional offset crankcase intake and scavenging mechanisms. The air inlet reed valve realizes the air mixing process of one cycle in advance by utilizing the pressure difference change of the air inlet and the crankcase in the working cycle, provides sufficient air mixing time and improves the performance of the engine. However, the lift of the reed valve in the current stage mainly depends on the magnitude of the internal and external pressure difference and the opening angle of the fixed stop baffle, and the existence of the fixed stop baffle limits the driving row spacing of the reed valve, so that the internal combustion gas quantity of the crankcase under different working conditions is influenced, and the hysteresis of the engine under variable working conditions is increased.
With the development of two-stroke piston engine technology, the response requirements of the engine to variable working conditions are higher and higher, so a new technical method is needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a device capable of adjusting the opening lift of a valve plate according to corresponding requirements.
In order to solve the above problems, the present invention provides a variable lift reed valve device comprising:
A valve seat provided with a valve hole;
The valve plate is arranged on the valve seat and can cover the valve hole, and the valve plate is provided with a free end and a fixed end fixed with the valve seat;
The stop baffle is rotationally connected to the valve seat through the rotating connecting end, the fixed end and the rotating connecting end are positioned on the same side of the valve hole, the stop baffle and the valve plate are arranged at an acute angle, and the angle between the stop baffle and the valve plate is adjustable.
As a further improvement of the present invention, there is also included:
the adjusting slide bar is connected to the valve seat in a sliding way and can slide along a linear track parallel to the axial lead of the valve hole;
and the other end of the crank is rotatably connected with the middle position of the stop baffle.
As a further improvement of the invention, the valve seat further comprises a through hole positioned on the valve seat, the axis of the through hole is parallel to the axis of the valve hole, and the adjusting slide rod slides in the through hole.
As a further improvement of the invention, the adjusting slide rod and the through hole are in friction fit, and the friction fit is as follows:
Under the working condition, the friction force of the adjusting slide bar between the inner walls of the through holes can limit the relative sliding of the adjusting slide bar;
the adjusting slide rod can slide in the through hole under the action of external force higher than the working condition.
As a further improvement of the invention, a damping sleeve is arranged in the through hole and is used for being in contact with the adjusting slide rod, the friction fit is adopted as the fit between the damping sleeve and the adjusting slide rod, and the friction fit is as follows:
Under the working condition, the friction force of the adjusting slide bar between the inner walls of the through holes can limit the relative sliding of the adjusting slide bar;
the adjusting slide rod can slide in the through hole under the action of external force higher than the working condition.
As a further development of the invention, the fixed end of the valve plate is fixed to the valve seat by means of a screw.
As a further development of the invention, the rotary connection end on the retaining flap is connected to the valve seat in a rotary manner by means of a hinge.
As a further improvement of the invention, the stop plate has sufficient area to maintain full engagement between the valve plates when they are moved into contact with the stop plate.
The valve plate has the beneficial effects that the stop baffle is arranged, the valve plate is opened due to the pressure difference between the inside and outside of the valve seat, the starting row spacing is limited due to the position of the stop baffle when the valve plate is opened each time, and the valve plate lift is adjustable by adjusting the position of the stop baffle because the angle between the stop baffle and the valve plate can be adjusted, so that the problems in the prior art are effectively solved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
wherein: 1-a valve hole; 2-valve seat; 3-valve plate; 4-a stop baffle; 5-adjusting the sliding rod; 6-crank; 7-through holes; 8-bolts.
Detailed Description
The following describes the embodiments of the present invention in further detail.
As shown in fig. 1, the present invention includes:
A valve seat provided with a valve hole;
The valve plate is arranged on the valve seat and can cover the valve hole, and the valve plate is provided with a free end and a fixed end fixed with the valve seat;
The stop baffle is rotationally connected to the valve seat through the rotating connecting end, the fixed end and the rotating connecting end are positioned on the same side of the valve hole, the stop baffle and the valve plate are arranged at an acute angle, and the angle between the stop baffle and the valve plate is adjustable.
As a further improvement of the present invention, there is also included:
the adjusting slide bar is connected to the valve seat in a sliding way and can slide along a linear track parallel to the axial lead of the valve hole;
and the other end of the crank is rotatably connected with the middle position of the stop baffle.
As a further improvement of the invention, the valve seat further comprises a through hole positioned on the valve seat, the axis of the through hole is parallel to the axis of the valve hole, and the adjusting slide rod slides in the through hole.
As a further improvement of the invention, the adjusting slide rod and the through hole are in friction fit, and the friction fit is as follows:
Under the working condition, the friction force of the adjusting slide bar between the inner walls of the through holes can limit the relative sliding of the adjusting slide bar;
the adjusting slide rod can slide in the through hole under the action of external force higher than the working condition.
As a further improvement of the invention, a damping sleeve is arranged in the through hole and is used for being in contact with the adjusting slide rod, the friction fit is adopted as the fit between the damping sleeve and the adjusting slide rod, and the friction fit is as follows:
Under the working condition, the friction force of the adjusting slide bar between the inner walls of the through holes can limit the relative sliding of the adjusting slide bar;
the adjusting slide rod can slide in the through hole under the action of external force higher than the working condition.
As a further development of the invention, the fixed end of the valve plate is fixed to the valve seat by means of a screw.
As a further development of the invention, the rotary connection end on the retaining flap is connected to the valve seat in a rotary manner by means of a hinge.
As a further improvement of the invention, the stop plate has sufficient area to maintain full engagement between the valve plates when they are moved into contact with the stop plate.
The specific implementation steps of the invention are as follows:
(1) The valve plate is made of carbon fiber, the free end of the valve plate is lapped on the outer wall of the edge of the valve hole, the fixed end of the valve plate is fixed on the valve seat, and the valve plate is turned over around the fixed end under the action of the pressure difference between the inside and the outside of the valve seat;
(2) The stop baffle is arranged at an acute angle with the valve plate in a calm state, and the stop baffle is used for limiting the continuous movement of the valve plate after the valve plate is contacted with the stop baffle, namely limiting the actuating row spacing of the valve plate;
(3) The angle between the stop baffle and the valve plate can be adjusted, specifically, a through hole is arranged on the valve seat, an adjusting slide rod capable of axially sliding along the through hole is arranged in the through hole, one free end of the adjusting slide rod is rotationally connected with a crank, the other end of the crank is rotationally connected with the middle position of the stop baffle, and the middle position does not refer to the geometric center of the stop baffle, and the geometric center of the stop baffle comprises other positions except the two end parts of the stop baffle;
(4) The adjusting slide rod is in the through hole and is in friction fit with the through hole, that is, after the position of the adjusting slide rod in the through hole is limited in working, no other external force acts, and no position movement can occur, but the position of the adjusting slide rod in the through hole can be adjusted by manpower or an operator by means of other external forces.
(5) The valve seat is made of heat-resistant epoxy resin material through injection molding, and the stop baffle is made of aluminum alloy through forging. So that it meets the corresponding working conditions.
The above example is only one embodiment of the present invention, which is described in detail and is not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (5)
1. A variable lift reed valve apparatus, comprising:
A valve seat (2) provided with a valve hole (1);
A valve plate (3) mounted on the valve seat (2) and capable of covering the valve hole (1), the valve plate (3) having a free end and a fixed end fixed with the valve seat (2);
The stop baffle (4) is rotationally connected to the valve seat (2) through a rotation connecting end, the fixed end and the rotation connecting end are positioned on the same side of the valve hole (1), the stop baffle (4) and the valve plate (3) are arranged at an acute angle, and the angle between the stop baffle and the valve plate is adjustable;
an adjusting slide rod (5) which is connected on the valve seat (2) in a sliding way and can slide along a linear track parallel to the axis of the valve hole (1);
A crank (6) connected to the free end of the adjusting slide rod (5) is rotated, and the other end of the crank (6) is connected to the middle position of the stop baffle (4) in a rotating way;
The valve seat further comprises a through hole (7) positioned on the valve seat (2), the axis of the through hole (7) is parallel to the axis of the valve hole (1), and the adjusting sliding rod (5) slides in the through hole (7);
the adjusting sliding rod (5) is in friction fit with the through hole (7), and the friction fit is as follows:
under working conditions, the friction force of the adjusting sliding rod (5) between the inner walls of the through holes (7) can limit the relative sliding of the adjusting sliding rod;
under the action of external force higher than working conditions, the adjusting sliding rod (5) can slide in the through hole (7).
2. A variable lift reed valve device as claimed in claim 1, wherein the fixed end of the valve plate (3) is fixed to the valve seat (2) by a bolt (8).
3. A variable lift reed valve device as claimed in claim 2, wherein the rotational connection on the stop plate (4) is pivotally connected to the valve seat (2) by a hinge.
4. A variable lift reed valve device as claimed in claim 3, wherein the stop plate (4) has sufficient area to maintain full engagement between the valve plates (3) when moved into contact with the stop plate (4).
5. A variable lift reed valve apparatus, comprising:
A valve seat (2) provided with a valve hole (1);
A valve plate (3) mounted on the valve seat (2) and capable of covering the valve hole (1), the valve plate (3) having a free end and a fixed end fixed with the valve seat (2);
The stop baffle (4) is rotationally connected to the valve seat (2) through a rotation connecting end, the fixed end and the rotation connecting end are positioned on the same side of the valve hole (1), the stop baffle (4) and the valve plate (3) are arranged at an acute angle, and the angle between the stop baffle and the valve plate is adjustable;
an adjusting slide rod (5) which is connected on the valve seat (2) in a sliding way and can slide along a linear track parallel to the axis of the valve hole (1);
A crank (6) connected to the free end of the adjusting slide rod (5) is rotated, and the other end of the crank (6) is connected to the middle position of the stop baffle (4) in a rotating way;
The valve further comprises a through hole (7) positioned on the valve seat (2), and the axis of the through hole (7) is parallel to the axis of the valve hole (1);
The damping sleeve is arranged in the through hole (7) and is used for being in contact with the adjusting sliding rod (5), the friction fit is adopted as the fit between the damping sleeve and the adjusting sliding rod, and the friction fit is as follows: under working conditions, the friction between the adjusting slide rod (5) and the damping sleeve can limit the relative sliding of the adjusting slide rod and the damping sleeve; the adjusting slide rod (5) can slide in the damping sleeve under the action of external force higher than working conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811086233.2A CN109026257B (en) | 2018-09-18 | 2018-09-18 | Variable lift reed valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811086233.2A CN109026257B (en) | 2018-09-18 | 2018-09-18 | Variable lift reed valve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109026257A CN109026257A (en) | 2018-12-18 |
| CN109026257B true CN109026257B (en) | 2024-10-01 |
Family
ID=64616932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811086233.2A Active CN109026257B (en) | 2018-09-18 | 2018-09-18 | Variable lift reed valve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109026257B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110131137B (en) * | 2019-05-28 | 2024-07-09 | 珠海凌达压缩机有限公司 | Baffle, valve assembly, compressor and air conditioner |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000249242A (en) * | 1999-03-03 | 2000-09-12 | Isuzu Motors Ltd | EGR device with reed valve |
| CN201892815U (en) * | 2010-10-22 | 2011-07-06 | 崔定楠 | Ground lifting projection screen |
| CN208918615U (en) * | 2018-09-18 | 2019-05-31 | 江苏心源航空科技有限公司 | A kind of variable lift reed valve device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1020633A1 (en) * | 1998-07-07 | 2000-07-19 | Man Nutzfahrzeuge Ag | One way valve for exhaust gas recirculation |
| JP2009138534A (en) * | 2007-12-03 | 2009-06-25 | Yamaha Motor Co Ltd | Reed valve device, internal combustion engine and vehicle |
| CN201618652U (en) * | 2010-01-20 | 2010-11-03 | 厦门松霖科技有限公司 | A clip slide seat and lifting mechanism |
-
2018
- 2018-09-18 CN CN201811086233.2A patent/CN109026257B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000249242A (en) * | 1999-03-03 | 2000-09-12 | Isuzu Motors Ltd | EGR device with reed valve |
| CN201892815U (en) * | 2010-10-22 | 2011-07-06 | 崔定楠 | Ground lifting projection screen |
| CN208918615U (en) * | 2018-09-18 | 2019-05-31 | 江苏心源航空科技有限公司 | A kind of variable lift reed valve device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109026257A (en) | 2018-12-18 |
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