CN211666812U - Two-stroke four-stroke free conversion engine - Google Patents
Two-stroke four-stroke free conversion engine Download PDFInfo
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- CN211666812U CN211666812U CN201922402156.3U CN201922402156U CN211666812U CN 211666812 U CN211666812 U CN 211666812U CN 201922402156 U CN201922402156 U CN 201922402156U CN 211666812 U CN211666812 U CN 211666812U
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Abstract
The utility model discloses a two-stroke four-stroke free conversion engine, including the cylinder, locate ignition mechanism in the cylinder, locate piston and the bent axle link mechanism of drive piston motion in the cylinder, still include air intake valve subassembly, exhaust valve subassembly and air intake assembly, wherein air intake valve subassembly and exhaust valve subassembly locate the upper portion of cylinder respectively, and air intake assembly locates on the lateral wall of cylinder, and is located the top of the lower dead center of piston. The utility model can simultaneously have the advantages of two-stroke and four-stroke engines, and when the engine needs power priority, the engine adopts a two-stroke working mode to obtain the maximum power; when the engine needs economy priority, the engine adopts a four-stroke working mode to obtain the best fuel economy.
Description
Technical Field
The utility model belongs to the technical field of the engine, especially, relate to a two-stroke four-stroke freely changes engine.
Background
The traditional Otto cycle piston engine has the following working processes: air intake, compression, work application and air exhaust. The two-stroke engine completes one working cycle in two strokes, namely, the crankshaft rotates for one circle, and the engine does work for the outside once; the four-stroke engine completes one working cycle in four strokes, namely, the crankshaft rotates for two circles, and the engine does work for one time outwards.
The two-stroke engine performs ignition and work once every revolution of the crankshaft, so that the output power of the engine is higher than that of a four-stroke engine in the same displacement and power-up, the engine can have higher power-to-weight ratio, but the fuel economy and the emission are poorer; the four-stroke engine has low output power, high fuel oil efficiency and high exhaust amount.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a two-stroke four-stroke free conversion engine, which can have the advantages of two-stroke and four-stroke engines, when the engine needs power priority, the engine adopts a two-stroke working mode to obtain the maximum power; when the engine needs economy priority, the engine adopts a four-stroke working mode to obtain the best fuel economy.
The utility model provides a two-stroke four-stroke free conversion engine, includes the cylinder, locates ignition mechanism in the cylinder, locates piston in the cylinder and drive the crankshaft connecting rod mechanism of piston motion, still include air intake valve subassembly, exhaust valve subassembly and air intake assembly, wherein air intake valve subassembly and exhaust valve subassembly are located respectively the upper portion of cylinder, the air intake assembly is located on the lateral wall of cylinder, and be located the top of lower dead center of piston.
Above technical scheme is preferred, the subassembly that admits air includes air inlet, intake pipe and air inlet check valve, the air inlet distributes on the lateral wall of cylinder, and is located the top of the lower dead center of piston, the intake pipe respectively with air inlet and air inlet valve subassembly are connected, the air inlet with be equipped with between the intake pipe the air inlet check valve.
Preferably, in the above technical scheme, the intake valve assembly includes an intake valve and an intake valve driver, the intake valve is disposed at the top of the cylinder, and the intake valve driver is configured to control the opening and closing of the intake valve.
Preferably, the exhaust valve assembly comprises an exhaust valve and an exhaust valve driver, the exhaust valve is arranged at the top of the cylinder, and the exhaust valve driver is used for controlling the opening and closing of the exhaust valve.
The utility model has the advantages and positive effects that: the utility model provides a two-stroke four-stroke free conversion engine, which can simultaneously have the advantages of two-stroke engines and four-stroke engines, and is applied to application scenes including but not limited to aviation, navigation, rail transit, automobiles, non-roads, power generation, hybrid power and the like; when the engine needs power priority, the engine adopts a two-stroke working mode to obtain maximum power; when the engine needs economy priority, the engine adopts a four-stroke working mode to obtain the best fuel economy.
Drawings
Fig. 1 is a schematic structural diagram of a two-stroke four-stroke free-transfer engine according to an embodiment of the present invention;
fig. 2 is a sequence diagram illustrating a two-stroke mode of operation of a two-stroke, four-stroke, free-transfer engine according to an embodiment of the present invention;
fig. 3 is a sequence diagram illustrating a four-stroke operating mode of a two-stroke, four-stroke, free-switching engine according to an embodiment of the present invention.
Wherein: 1. a cylinder; 2. an ignition mechanism; 3. a piston; 4. a crankshaft connecting rod mechanism; 5. an air inlet; 6. an air inlet pipe; 7. an air inlet check valve; 8. an intake valve; 9. an intake valve driver; 10. an exhaust valve; 11. an exhaust valve actuator.
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.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The present embodiment provides a two-stroke four-stroke free-switching engine, as shown in fig. 1-3, including a cylinder 1, an ignition mechanism 2 disposed in the cylinder 1, a piston 3 disposed in the cylinder 1, and a crankshaft connecting rod mechanism 4 for driving the piston 3 to move, in order to adapt to the two-stroke four-stroke free-switching, the present embodiment further includes an intake valve assembly, an exhaust valve assembly, and an intake assembly, wherein the intake valve assembly and the exhaust valve assembly are respectively disposed on an upper portion of the cylinder 1, and the intake assembly is disposed on a sidewall of the cylinder 1 and located above a bottom dead center of the piston 3. Alternatively, in the present embodiment, the ignition mechanism 2 is a spark plug, and the ignition mechanism 2 may also be a glow stick. The crankshaft connecting rod mechanism 4 belongs to the existing structure in the application, and therefore the specific structure of the crankshaft connecting rod mechanism 4 is not described in detail.
Further, the subassembly that admits air includes air inlet 5, intake pipe 6 and the check valve 7 that admits air, and air inlet 5 distributes on the lateral wall of cylinder 1, and is located the top of the lower dead center of piston 3, intake pipe 6 are connected with air inlet 5 and the valve subassembly that admits air respectively, are equipped with the check valve 7 that admits air between air inlet 5 and the intake pipe 6.
Further, the air inlet valve assembly comprises an air inlet valve 8 and an air inlet valve driver 9, the air inlet valve 8 is arranged at the top end of the air cylinder 1, and the air inlet valve driver 9 is used for controlling the opening and closing of the air inlet valve 8.
Further, the exhaust valve assembly comprises an exhaust valve 10 and an exhaust valve driver 11, the exhaust valve 10 is arranged at the top end of the cylinder 1, and the exhaust valve driver 11 is used for controlling the opening and closing of the exhaust valve 10. The intake valve actuator 9 and the exhaust valve actuator 11 in this application may be of the existing variable cam mechanical construction, or may be in the form of solenoid valves.
The working process of the embodiment: the opening and closing time of the intake valve 8 and the exhaust valve 10 is controlled by the intake valve driver 9 and the exhaust valve driver 11, and the opening and closing time of the one-way intake valve is matched, so that the free switching of the two-stroke/four-stroke working state of the engine is realized. As shown in fig. 2 and 3:
two-stroke mode:
A. air intake: the piston 3 descends to the lower part of the air inlet 5, the air inlet one-way valve 7 is opened, the mixed gas of fresh air and fuel enters the cylinder 1, the exhaust valve driver 11 controls the exhaust valve 10 to be opened at the moment, and the exhaust gas of the previous cycle is discharged out of the cylinder 1 through the exhaust valve 10 to form direct-current scavenging;
B. compression: the piston 3 moves upwards, the air inlet one-way valve 7 is closed, the air inlet 5 and the air inlet valve 8 are closed, and the mixed air is compressed;
C. acting: the piston 3 moves upwards to the vicinity of the top dead center, the spark plug is ignited, the mixed gas is ignited and expanded, and the piston 3 is pushed to move downwards to do work;
D. exhausting: the piston 3 moves to the air inlet 5, the exhaust valve 10 is opened, the air inlet one-way valve 7 is opened, and the waste gas is exhausted out of the cylinder 1 through the exhaust valve 10 to form direct-flow scavenging;
when the crankshaft rotates for a circle, the engine does work for the outside once.
Four-stroke mode:
E. air intake: the piston 3 descends, the air inlet valve 8 is opened, the fresh air and fuel mixture enters the cylinder 1 through the air inlet valve 8, when the piston 3 descends to the air inlet 5, the air inlet valve 8 is closed, the air inlet one-way valve 7 is opened, and the fresh mixture enters the cylinder 1 through the air inlet 5.
F. Compression: the piston 3 moves upwards, the air inlet one-way valve 7 is closed, the air inlet 5 and the air inlet valve 8 are both closed, and the mixed air is compressed;
G. acting: the piston 3 moves upwards to the vicinity of the top dead center, the spark plug is ignited, the mixed gas is ignited and expanded, the piston 3 is pushed to move downwards to do work, and the air inlet one-way valve 7 is in a closed state;
H. exhausting: the piston 3 moves upwards, the exhaust valve 10 is opened, the waste gas is exhausted out of the cylinder 1 through the exhaust valve 10, and the air inlet one-way valve 7 is in a closed state;
at this point, the crankshaft rotates for two circles, and the engine does work for the outside once.
The utility model has the advantages and positive effects that: the utility model provides a two-stroke four-stroke free conversion engine, which can simultaneously have the advantages of two-stroke engines and four-stroke engines, and is applied to application scenes including but not limited to aviation, navigation, rail transit, automobiles, non-roads, power generation, hybrid power and the like; when the engine needs power priority, the engine adopts a two-stroke working mode to obtain maximum power; when the engine needs economy priority, the engine adopts a four-stroke working mode to obtain the best fuel economy.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (4)
1. The utility model provides a two-stroke four-stroke free conversion engine, includes the cylinder, locates ignition mechanism in the cylinder, locate piston in the cylinder and drive the bent axle link mechanism of piston motion which characterized in that: the piston cylinder is characterized by further comprising an air inlet valve assembly, an exhaust valve assembly and an air inlet assembly, wherein the air inlet valve assembly and the exhaust valve assembly are respectively arranged at the upper part of the cylinder, and the air inlet assembly is arranged on the side wall of the cylinder and is positioned above the bottom dead center of the piston.
2. The two-stroke, four-stroke, free-transfer engine of claim 1, wherein: the air inlet assembly comprises an air inlet, an air inlet pipe and an air inlet check valve, the air inlet is distributed on the side wall of the cylinder and located above the lower dead point of the piston, the air inlet pipe is connected with the air inlet and the air inlet valve assembly respectively, and the air inlet pipe are provided with the air inlet check valve therebetween.
3. The two-stroke, four-stroke, free-transfer engine of claim 1, wherein: the air inlet valve component comprises an air inlet valve and an air inlet valve driver, the air inlet valve is arranged at the top of the air cylinder, and the air inlet valve driver is used for controlling the opening and closing of the air inlet valve.
4. The two-stroke, four-stroke, free-transfer engine of claim 1, wherein: the exhaust valve assembly comprises an exhaust valve and an exhaust valve driver, the exhaust valve is arranged at the top of the cylinder, and the exhaust valve driver is used for controlling the opening and closing of the exhaust valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922402156.3U CN211666812U (en) | 2019-12-27 | 2019-12-27 | Two-stroke four-stroke free conversion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922402156.3U CN211666812U (en) | 2019-12-27 | 2019-12-27 | Two-stroke four-stroke free conversion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211666812U true CN211666812U (en) | 2020-10-13 |
Family
ID=72736895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922402156.3U Active CN211666812U (en) | 2019-12-27 | 2019-12-27 | Two-stroke four-stroke free conversion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211666812U (en) |
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2019
- 2019-12-27 CN CN201922402156.3U patent/CN211666812U/en active Active
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