CN210264849U

CN210264849U - Two-stroke diesel engine

Info

Publication number: CN210264849U
Application number: CN201921413562.3U
Authority: CN
Inventors: 王立民
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-04-07
Anticipated expiration: 2029-08-28

Abstract

The embodiment of the utility model discloses two-stroke diesel engine, including cylinder, piston and crank link mechanism, the inside of cylinder is formed with inclosed acting channel, and in the acting channel of cylinder was arranged in to the piston for along acting channel reciprocating motion, the piston includes first piston head and second piston head, divides the space in the cylinder into confined plenum chamber, machine oil chamber and working chamber, and crank link mechanism sets up in machine oil chamber, and crank link mechanism is connected with the piston drive for drive first piston head and second piston head syntropy move. The utility model discloses based on the method that splashes, make the motion of bent axle connecting rod machine drive the machine oil in the machine oil chamber and splash, lubricate parts such as bent axle, connecting rod, piston and cylinder wall to avoid the machine oil of grease chamber and the condition that the fuel mixture in the work chamber is burnt, lubricate when the diesel engine work of being convenient for, and effectively improve lubricating efficiency.

Description

Two-stroke diesel engine

Technical Field

The embodiment of the utility model provides a relate to engine technical field, concretely relates to two-stroke diesel engine.

Background

The diesel engine is an engine which burns diesel to obtain energy release, the working cycle comprises four strokes of air inlet, compression, work application and exhaust, and is different from a gasoline engine, the diesel engine performs compression ignition work on mixed gas in a cylinder, namely when the diesel engine works, air is injected into the cylinder and is compressed by a piston, when the air in the cylinder is compressed to the end point, the temperature can reach 500-.

Because of the high working pressure of the diesel engine, parts such as a crankshaft, a piston and the like in the diesel engine are generally required to be lubricated to keep the diesel engine stably working. Because the parts are usually positioned in the cylinder to do work, the common method is to mix engine oil into fuel oil, so that the parts are immersed and lubricated by the engine oil while doing work, but the engine oil is easy to burn when the diesel engine does work, so that the diesel engine is difficult to lubricate.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a two-stroke diesel engine to solve the problem of diesel engine lubrication difficulty among the prior art.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

according to a first aspect of embodiments of the present invention, a two-stroke diesel engine comprises:

the device comprises a cylinder, a working mechanism and a working mechanism, wherein a closed working channel is formed inside the cylinder;

the piston is arranged in a working channel of the cylinder and used for reciprocating along the working channel, the piston comprises a first piston head and a second piston head, a sealed engine oil chamber is formed in a space between the first piston head and the second piston head and used for injecting lubricating engine oil, a sealed inflation chamber is formed in a space, away from the engine oil chamber, of the first piston head and used for injecting air, a sealed working chamber is formed in a space, away from the engine oil chamber, of the second piston head and used for injecting fuel oil, and the inflation chamber is communicated with the working chamber;

the crank connecting rod mechanism is arranged in the engine oil chamber and is in driving connection with the piston and used for driving the first piston head and the second piston head to move in the same direction.

Furthermore, the outer wall of the plenum chamber is provided with an air suction port for communicating the chamber with the outside, and the air suction port is used for pressing outdoor air into the plenum chamber along the air suction port after the piston is forced to move to the work chamber.

Furthermore, an exhaust port communicating the indoor space and the outdoor space is formed in the outer wall of the working chamber, and the exhaust port is formed in the bottom wall of the cylinder and used for pressing deflagration waste gas out of the working chamber along the exhaust port after the piston moves to the plenum chamber under the stress.

Furthermore, an air outlet is formed in the outer wall of the inflation chamber, an air inlet is formed in the outer wall of the work chamber, an air storage pipe is arranged between the inflation chamber and the work chamber, an opening of one end of the air storage pipe is connected to the air outlet, and an opening of the other end of the air storage pipe is connected to the air inlet.

Furthermore, an oil nozzle communicated with the inside and the outside of the working chamber is arranged on the outer wall of the working chamber, and the oil nozzle is externally connected with oil injection equipment.

Furthermore, the crank-connecting rod mechanism comprises a crankshaft and connecting rods, two ends of the crankshaft are respectively connected to the inner wall of the cylinder of the air cylinder in a rotating mode, the axis of the crankshaft is perpendicular to the movement direction of the piston, one end of each connecting rod is connected to the crank of the crankshaft, the other end of each connecting rod is connected to the side face, located in the oil chamber, of the piston head, one connecting rod is arranged on each of the first piston head and the second piston head, and one end, far away from the piston heads, of each connecting rod is connected to the same crank of the crankshaft.

Furthermore, a fixing rod is arranged between the first piston head and the second piston head, one end of the fixing rod is fixedly connected to the side face of the first piston head, the other end of the fixing rod is fixedly connected to the side face of the second piston head, a connecting rod is hinged to a crank of the crankshaft, and one end, far away from the crankshaft, of the connecting rod is hinged to the first piston head or the second piston head.

The embodiment of the utility model provides a have following advantage: the principle of the traditional diesel engine is improved by arranging a closed cylinder, arranging two piston heads which can reciprocate in the cylinder, and dividing the space in the cylinder into a closed inflation chamber, an engine oil chamber and a work chamber by the two piston heads, wherein the work chamber is communicated with the inflation chamber, when the second piston head is positioned at the top dead center of the work chamber, oil mist is sprayed into the work chamber, so as to deflagrate and generate high-pressure gas and push the second piston head to move towards the inflation chamber to do work, at the moment, a crankshaft of a crank connecting rod mechanism rotates to drive the first piston head to move in the same direction, air in the inflation chamber is pressed into the work chamber to complete a first stroke, under the inertial rotation action of the crankshaft, the piston moves back towards the work chamber along with the rotation of the crankshaft, and pushes the air pressed into the work chamber to the top dead center again to be compressed, and when the first piston head moves towards the work, and air is injected into the air charging chamber to complete the second stroke, and in the process, a certain amount of engine oil is injected into the engine oil chamber, so that the engine oil in the engine oil chamber is driven to splash by the motion of the crankshaft connecting rod machine based on a splash method, parts such as a crankshaft, a connecting rod, a piston, a cylinder wall and the like are lubricated, the condition that the engine oil in the engine oil chamber and fuel oil in the work doing chamber are mixed and combusted is avoided, the diesel engine can conveniently work and lubricate, and the lubricating efficiency is effectively improved.

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 description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic view of an overall structure of a two-stroke diesel engine provided in embodiment 1 of the present invention;

fig. 2 is a schematic view of an overall structure of a two-stroke diesel engine according to embodiment 2 of the present invention.

In the figure: 1. a cylinder; 11. a working channel; 111. an engine oil chamber; 121. a plenum chamber; 1211. an air suction port; 1212. an air outlet; 131. a working chamber; 1311. an exhaust port; 1312. an air inlet; 2. a piston; 21. a first piston head; 22. a second piston head; 3. a crank link mechanism; 31. a crankshaft; 32. a connecting rod; 4. an air storage pipe; 5. an oil jet; 6. and (5) fixing the rod.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1, the embodiment of the present invention provides a two-stroke diesel engine, which includes a cylinder 1, a piston 2 and a crank-link mechanism 3, specifically configured as follows:

the cylinder 1 is used for realizing stroke work of the diesel engine, and a closed work channel 11 is formed in the cylinder 1. The piston 2 is arranged in the working channel 11 of the cylinder 1 and used for reciprocating along the working channel 11, wherein the piston 2 comprises a first piston head 21 and a second piston head 22, and the first piston head 21 and the second piston head 22 are both arranged in the working channel 11 of the cylinder 1 in a matching manner and can keep a certain distance and simultaneously move along the working channel 11 in the same direction. In the working channel 11 of the cylinder 1, the space between the first piston head 21 and the second piston head 22 forms a closed oil chamber 111 for pre-filling a certain amount of lubricating oil; the first piston head 21 is far away from the space of the engine oil chamber 111 to form a closed inflation chamber 121, and the outer wall of the inflation chamber 121 is provided with an air suction opening 1211 for communicating the chamber with the outside, so that after the piston 2 is forced to move to the power chamber 131, the outdoor air is pressed into the inflation chamber 121 along the air suction opening 1211; the space of the second piston head 22 far away from the engine oil chamber 111 forms a closed work chamber 131, an oil nozzle 5 communicating the inside and the outside of the chamber is installed on the outer wall of the work chamber 131, the oil nozzle 5 is used for externally connecting oil injection equipment, and when the second piston head 22 is positioned at the top dead center in the work chamber 131, oil mist is injected into the work chamber 131 through the oil nozzle 5, so that high-pressure gas is generated by deflagration. An exhaust port 1311 for communicating the chamber and the outside is further formed on an outer wall of the working chamber 131, and the exhaust port 1311 is preferably formed on a bottom wall of the cylinder 1, and is used for pressing the deflagration exhaust gas out of the working chamber 131 along the exhaust port 1311 after the piston 2 is forced to move toward the inflation chamber 121. The plenum chamber 121 is communicated with the working chamber 131, an air outlet 1212 is opened in an outer wall of the plenum chamber 121, an air inlet 1312 is opened in an outer wall of the working chamber 131, an air storage tube 4 is provided between the plenum chamber 121 and the working chamber 131, a tube opening at one end of the air storage tube 4 is connected to the air outlet 1212, and a tube opening at the other end of the air storage tube 4 is connected to the air inlet 1312. Wherein the exhaust ports 1311 and the intake ports 1312 on the apply chamber 131 are all opened when the first piston head 21 reaches the bottom dead center in the charge chamber 121, and the exhaust ports 1311 and the intake ports 1312 are all closed when the second piston head 22 moves toward the apply chamber 131.

As described above, the crank-link mechanism 3 is disposed in the oil chamber 111, and the crank-link mechanism 3 is drivingly connected to the piston 2 for driving the first piston head 21 and the second piston head 22 to move in the same direction. Specifically, the crank mechanism 3 includes a crankshaft 31 and a connecting rod 32, two ends of the crankshaft 31 are respectively rotatably connected to the inner walls of the cylinders 1, and the axis of the crankshaft 31 is perpendicular to the moving direction of the pistons 2. One end of the connecting rod 32 is connected to the crank of the crankshaft 31, and the other end is connected to the side of the piston head located in the engine oil chamber 111, wherein one connecting rod 32 is arranged on each of the first piston head 21 and the second piston head 22, and the ends of the two connecting rods 32 far away from the piston heads are connected to the same crank of the crankshaft 31.

The working principle is as follows: when the second piston head 22 is located at the top dead center in the working chamber 131, oil mist is sprayed into the working chamber 131, so that high-pressure gas is generated by deflagration, the second piston head 22 is pushed to displace towards the inflation chamber 121 to do work, at the moment, the crankshaft 31 of the crank-link mechanism 3 rotates, the first piston head 21 is driven to displace in the same direction, fresh air in the inflation chamber 121 is discharged along the air storage pipe 4, when the first piston head 21 reaches the bottom dead center in the inflation chamber 121, deflagration exhaust gas in the working chamber 131 is discharged along the exhaust port 1311, and meanwhile, the fresh air in the air storage pipe 4 is pressed into the working chamber 131, so that a first stroke is completed; under the action of the inertial rotation of the crankshaft 31, the piston 2 moves back to the working chamber 131 along with the continuous rotation of the crankshaft 31, and pushes the fresh air pressed into the working chamber 131 to the top dead center again for compression, and the air pressure in the plenum chamber 121 is lower than the outdoor pressure while the first piston head 21 moves towards the working chamber 131, so that the outdoor air is continuously sucked into the plenum chamber 121 along the suction port 1211 until the second piston head 22 and the working chamber 131 reach the top dead center, and the second stroke is completed, thereby optimizing the four-stroke process of the conventional diesel engine.

In the above process, since a fixed amount of oil is injected into the oil chamber 111 and the oil chamber 111 is displaced with the displacement of the piston 2, when the crankshaft 31, the connecting rod 32, and the like of the crank link mechanism 3 are rotated by the splash method, the oil in the oil chamber 111 is splashed to lubricate the crankshaft 31, the connecting rod 32, the piston 2, the cylinder wall, and the like, and to prevent the oil in the oil chamber 111 from being mixed with the fuel in the working chamber 131 and combusted, thereby facilitating the operation of the diesel engine and the lubrication, and effectively improving the lubrication efficiency.

Example 2

As shown in fig. 2, the difference from embodiment 1 is that a fixing rod 6 is disposed between the first piston head 21 and the second piston head 22, one end of the fixing rod 6 is fixedly connected to a side surface of the first piston head 21, the other end is fixedly connected to a side surface of the second piston head 22, one connecting rod 32 is disposed, one end of the connecting rod 32 is hinged to a crank of the crankshaft 31, the other end of the connecting rod 32 is hinged to the first piston head 21 or the second piston head 22, and by disposing one connecting rod 32, the crank-link mechanism 3 only needs to drive the first piston head 21 or the second piston head 22 to displace, and the other piston head displaces in the same direction under the action of the fixing rod 6. Because the connecting rod 32 can move in the up-and-down direction under the action of the crankshaft 31, the rigid connection between the first piston head 21 and the second piston head 22 is utilized to reduce the number of the connecting rods 32 on the piston heads, so that the first piston head 21 or the second piston head 22 is prevented from generating large friction with the cylinder wall of the cylinder 1 under the driving of the connecting rod 32, the abrasion of the piston heads is reduced, and the service life of the piston heads is prolonged.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. A two-stroke diesel engine, characterized in that it comprises:

the device comprises a cylinder (1), wherein a closed work doing channel (11) is formed inside the cylinder (1);

the piston (2) is arranged in a working channel (11) of the cylinder (1) and used for reciprocating along the working channel (11), the piston (2) comprises a first piston head (21) and a second piston head (22), a sealed engine oil chamber (111) is formed by a space between the first piston head (21) and the second piston head (22), lubricating engine oil is injected into the engine oil chamber (111), a sealed inflation chamber (121) is formed by a space, away from the engine oil chamber (111), of the first piston head (21), air is injected into the inflation chamber (121), a sealed working chamber (131) is formed by a space, away from the engine oil chamber (111), of the second piston head (22), fuel oil is injected into the working chamber (131), and the inflation chamber (121) is communicated with the working chamber (131);

the crank connecting rod mechanism (3) is arranged in the engine oil chamber (111), and the crank connecting rod mechanism (3) is in driving connection with the piston (2) and is used for driving the first piston head (21) and the second piston head (22) to move in the same direction.

2. A two-stroke diesel engine according to claim 1, characterized in that: the outer wall of the plenum chamber (121) is provided with an air inlet (1211) for communicating the indoor space with the outdoor space, and the air inlet (1211) is used for pressing outdoor air into the plenum chamber (121) along the air inlet (1211) after the piston (2) is forced to move to the power chamber (131).

3. A two-stroke diesel engine according to claim 1, characterized in that: an exhaust port (1311) for communicating the inside and the outside of the working chamber (131) is formed in the outer wall of the working chamber, the exhaust port (1311) is formed in the bottom wall of the cylinder (1) and used for pressing deflagration exhaust gas out of the working chamber (131) along the exhaust port (1311) after the piston (2) is forced to move towards the plenum chamber (121).

4. A two-stroke diesel engine according to claim 1, characterized in that: an air outlet (1212) is formed in the outer wall of the inflation chamber (121), an air inlet (1312) is formed in the outer wall of the working chamber (131), an air storage pipe (4) is arranged between the inflation chamber (121) and the working chamber (131), a pipe orifice at one end of the air storage pipe (4) is connected to the air outlet (1212), and a pipe orifice at the other end of the air storage pipe (4) is connected to the air inlet (1312).

5. A two-stroke diesel engine according to claim 1, characterized in that: and an oil nozzle (5) communicating the inside and the outside of the working chamber (131) is arranged on the outer wall of the working chamber, and the oil nozzle (5) is externally connected with oil injection equipment.

6. A two-stroke diesel engine according to claim 1, characterized in that: crank link mechanism (3) include bent axle (31) and connecting rod (32), the both ends of bent axle (31) are rotated respectively and are connected on the cylinder inner wall of cylinder (1), and the axis perpendicular to piston (2)'s of bent axle (31) direction of motion sets up, the one end of connecting rod (32) is connected on the crank of bent axle (31), and the other end articulates on the side that the piston head is located grease chamber (111), wherein, all set up one connecting rod (32) on first piston head (21) and the second piston head (22), and two connecting rod (32) keep away from the one end of piston head and connect on the same crank of bent axle (31).

7. A two-stroke diesel engine according to claim 6, characterized in that: a fixing rod (6) is arranged between the first piston head (21) and the second piston head (22), one end of the fixing rod (6) is fixedly connected to the side face of the first piston head (21), the other end of the fixing rod is fixedly connected to the side face of the second piston head (22), a connecting rod (32) is hinged to a crank of the crankshaft (31), and one end, far away from the crankshaft (31), of the connecting rod (32) is hinged to the first piston head (21) or the second piston head (22).