CN211116267U

CN211116267U - Two-four stroke engine

Info

Publication number: CN211116267U
Application number: CN201921369639.1U
Authority: CN
Inventors: 刘合发
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-07-28
Anticipated expiration: 2029-08-22

Abstract

The utility model discloses a two four-stroke engine, the top that the engine body corresponds the combustion chamber still is provided with oxygen filling port and fuel filling port, the top that the combustion chamber corresponds the piston operation minimum is provided with the second gas vent, still be provided with control on the engine body exhaust camshaft with the shifter of crankshaft connection and separation, the shifter include with first gear that crankshaft drive connects and with the second gear that exhaust camshaft drive connects, first gear and second gear are connected through an intermediate gear transmission, the shifter still includes a promotion subassembly, intermediate gear passes through the activity of promotion subassembly sets up. The beneficial effects of the above technical scheme are: the second exhaust port, the oxygen filler port and the fuel filler port are provided as operating members of a two-stroke engine, the intermediate gear is provided so as to be capable of switching between a four-stroke operation and a two-stroke operation, and the engine body is capable of switching between a four-stroke operation and a two-stroke operation.

Description

Two-four stroke engine

Technical Field

The utility model relates to the technical field of engines, concretely relates to two four-stroke engine.

Background

The existing engine comprises two-stroke and four-stroke, when the four-stroke engine works, four strokes occur in a cylinder body, namely air suction, compression, power application and exhaust, and the four-stroke engine is high in combustion efficiency, easy to start and stable in operation. The two-stroke engine only has two strokes in the cylinder body, the explosive force is strong, and the power under the same rotating speed is higher. Two-stroke and four-stroke engines have advantages when facing different road conditions. But one vehicle cannot have both types of engines placed on it.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a two four-stroke engine for an engine can switch between four-stroke and two-stroke, makes two-stroke and four-stroke can exert respective advantage, has improved the performance of engine.

The utility model provides a two four-stroke engine, including the engine body, the top that the engine body corresponds the combustion chamber is provided with air inlet, first exhaust port, spark plug and fuel entry, be provided with the slider in the combustion chamber, the engine body still is provided with the bent axle that is used for exporting power and is used for controlling air inlet and the air inlet exhaust camshaft of first exhaust port switch, the exhaust camshaft with crankshaft drive is connected, its characterized in that, the top that the engine body corresponds the combustion chamber still is provided with oxygen filler and fuel filler, the combustion chamber corresponds the piston operation top of minimum and is provided with the second exhaust port, still be provided with on the engine body control the exhaust camshaft with the switching mechanism that the bent axle is connected and is separated, the switching mechanism include with the first gear of crankshaft drive connection and with the second gear of exhaust camshaft drive connection, the first gear and the second gear are in transmission connection through an intermediate gear, the conversion mechanism further comprises a pushing assembly, and the intermediate gear is movably arranged through the pushing assembly.

The beneficial effects of the above technical scheme are: the second exhaust port, the oxygen filling port and the fuel filling port can be used as action parts of a two-stroke engine, the connection between the exhaust camshaft and the crankshaft is disconnected through the intermediate gear, the air inlet and the first exhaust port are closed, the engine body can perform two-stroke action, mixed gas is introduced into the combustion chamber through the oxygen filling port and the fuel filling port, then the piston is ignited to push the piston to do work, when the piston runs to the lowest point, oxygen is sprayed through the oxygen filling port, waste gas in the combustion chamber is extruded out through the second exhaust port, and when the piston returns to the highest point, ignition work can be continuously performed, so that complete action of two strokes is realized. And an intermediate gear is provided that is capable of switching between four-stroke and two-stroke.

Further, the oxygen filling opening is connected with an oxygen storage bottle. Oxygen is supplied via an oxygen storage bottle.

Further, the pushing assembly is an electric push rod or a hydraulic cylinder.

Further, the engine body still includes an exhaust pipe, first exhaust port and second exhaust port all with the exhaust pipe intercommunication.

Further, a valve is arranged at the second exhaust port. The normal operation can be ensured when the two-stroke state is realized.

Further, an oxygen sensor is arranged in the exhaust pipe. The oxygen content in the exhaust pipe can be detected, and the filling amount of the oxygen filling port can be adjusted in an auxiliary mode.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural view of the switching mechanism in the two-stroke state according to the embodiment of the present invention;

fig. 3 is a schematic structural diagram of the switching mechanism in the four-stroke state according to the embodiment of the present invention.

Reference numerals: the engine includes an engine body 100, a combustion chamber 110, a piston 120, a second exhaust port 130, a fuel inlet port 140, an intake port 150, a first exhaust port 160, a spark plug 170, an oxygen filler port 180, a fuel filler port 190, an exhaust pipe 200, a crankshaft 300, a first gear 310, a thrust unit 400, an intermediate gear 410, an exhaust camshaft 500, and a second gear 510.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship as shown in the drawings for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media.

As shown in fig. 1-3, the embodiment provides a two-four stroke engine, including an engine body 100, where the top of the engine body 100 corresponding to a combustion chamber 110 is provided with an air inlet 150, a first exhaust port 160, an ignition plug 170 and a fuel inlet 140, the combustion chamber 110 is provided with a slider, the engine body 100 is further provided with a crankshaft 300 for outputting power and an air inlet and exhaust camshaft 500 for controlling the opening and closing of the air inlet 150 and the first exhaust port 160, the exhaust camshaft 500 is in transmission connection with the crankshaft 300, and is characterized in that the top of the engine body 100 corresponding to the combustion chamber 110 is further provided with an oxygen filling port 180 and a fuel filling port 190, the combustion chamber 110 is provided with a second exhaust port 130 above the lowest running point of a piston 120, the engine body 100 is further provided with a switching mechanism for controlling the connection and disconnection of the exhaust camshaft 500 and the crankshaft 300, the switching mechanism comprises a first gear 310 in transmission connection with the crankshaft 300 and a second gear 510 in transmission connection with the exhaust camshaft 500, the first gear 310 and the second gear 510 are in transmission connection through an intermediate gear 410, the switching mechanism further comprises a pushing assembly 400, and the intermediate gear 410 is movably arranged through the pushing assembly 400.

The second exhaust port 130, the oxygen filling port 180 and the fuel filling port 190 are arranged as the action parts of the two-stroke engine, the connection between the exhaust camshaft 500 and the crankshaft 300 is disconnected through the intermediate gear 410, so that the air inlet 150 and the first exhaust port 160 are closed, the engine body 100 can perform two-stroke action, mixed gas is introduced into the combustion chamber 110 through the oxygen filling port 180 and the fuel filling port 190, then the piston 120 is ignited to push to do work, when the piston 120 runs to the lowest point, oxygen is sprayed in through the oxygen filling port 180, waste gas in the combustion chamber 110 is extruded out through the second exhaust port 130, when the piston 120 returns to the highest point, ignition work can be continuously performed, and complete action of two strokes is realized. And the intermediate gear 410 is provided to be capable of switching between four strokes and two strokes.

The oxygen filling port 180 is connected with an oxygen storage bottle. Oxygen is supplied via an oxygen storage bottle. A pressure stabilizing valve is further disposed between the oxygen storage bottle and the oxygen filling port 180 so that oxygen can be introduced into the combustion chamber 110 at a constant pressure.

The pushing assembly 400 is an electric push rod or a hydraulic cylinder. When the engine is required to perform four-stroke operation, the push rod pushes the intermediate gear 410 to be engaged with the first gear 310 and the second gear 510 respectively, and when the engine is required to perform two-stroke operation, the intermediate gear 410 is moved away to be disengaged from the first gear 310 and the second gear 510 by the push rod, so that the exhaust camshaft 500 stops acting.

The engine body 100 further includes an exhaust pipe 200, and the first exhaust port 160 and the second exhaust port 130 are both communicated with the exhaust pipe 200.

A valve is provided at the second exhaust port 130. The normal operation can be ensured when the two-stroke state is realized.

An oxygen sensor is also provided in the exhaust pipe 200. The oxygen content in the exhaust pipe 200 can be detected, and the filling amount of the oxygen filling port 180 can be adjusted in an auxiliary manner.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. A two-four stroke engine comprises an engine body (100), wherein an air inlet (150), a first air outlet (160), a spark plug (170) and a fuel inlet (140) are arranged at the top of the engine body (100) corresponding to a combustion chamber (110), a slide block is arranged in the combustion chamber (110), the engine body (100) is also provided with a crankshaft (300) used for outputting power and an air inlet and exhaust cam shaft (500) used for controlling the opening and closing of the air inlet (150) and the first air outlet (160), the exhaust cam shaft (500) is in transmission connection with the crankshaft (300), the two-four stroke engine is characterized in that an oxygen filling port (180) and a fuel filling port (190) are further arranged at the top of the engine body (100) corresponding to the combustion chamber (110), and a second air outlet (130) is arranged above the lowest operating point of a piston (120) of the combustion chamber (110), the engine body (100) is further provided with a switching mechanism for controlling the connection and the disconnection of the exhaust camshaft (500) and the crankshaft (300), the switching mechanism comprises a first gear (310) in transmission connection with the crankshaft (300) and a second gear (510) in transmission connection with the exhaust camshaft (500), the first gear (310) and the second gear (510) are in transmission connection through an intermediate gear (410), the switching mechanism further comprises a pushing assembly (400), and the intermediate gear (410) is movably arranged through the pushing assembly (400).

2. A two-four stroke engine according to claim 1 wherein an oxygen storage bottle is connected to the oxygen filler port (180).

3. A two-four stroke engine according to claim 1 wherein the push assembly (400) is an electric push rod or a hydraulic cylinder.

4. A two-four stroke engine according to claim 1 wherein the engine block (100) further comprises an exhaust pipe (200), the first exhaust port (160) and the second exhaust port (130) both communicating with the exhaust pipe (200).

5. A two-four stroke engine according to claim 4 wherein valves are provided at the second exhaust ports (130).

6. A two-four stroke engine according to claim 4 wherein an oxygen sensor is also provided in the exhaust conduit (200).