CN110905656A

CN110905656A - Integrated linear two-stroke engine

Info

Publication number: CN110905656A
Application number: CN201911114463.XA
Authority: CN
Inventors: 左臣伟; 樊朝辉; 申念
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-03-24
Anticipated expiration: 2039-11-14
Also published as: CN110905656B

Abstract

The invention discloses an integrated linear two-stroke engine, wherein a first combustion cylinder and a second combustion cylinder are fixed in a straight line in a butt joint mode, a first air cylinder is arranged behind the first combustion cylinder, a second air cylinder is arranged behind the second combustion cylinder, the first combustion cylinder and the second combustion cylinder share a long piston connecting rod, two ends of the long piston connecting rod respectively penetrate out of the first air cylinder and the second air cylinder, and a first air piston in the first air cylinder and a second air piston in the second air cylinder are both arranged on the long piston connecting rod. The invention has the advantages of the traditional two-stroke engine and the four-stroke engine, adopts the two-stroke mode, solves the problem that the ignition process can be completed only by combustion explosion, exhaust, air suction and compression in the four-stroke engine, and simultaneously adopts the mode of atomizing fuel twice, so that the fuel oil has smaller atomized particles, more complete combustion and stronger explosive force.

Description

Integrated linear two-stroke engine

Technical Field

The invention belongs to the technical field of engines, and particularly relates to an integrated linear two-stroke engine.

Background

Currently, there are engine types:

1. the traditional crank connecting rod rotary engine has the advantages that after oil in a cylinder combustion chamber is combusted and exploded, force is transmitted through the crank connecting rod to form reciprocating rotary motion, and therefore the engine is driven to do work. The engine has low heat exchange efficiency, the most advanced heat exchange level in the world is about 25% conversion rate at present, the reason is that when the cylinder is ignited, burnt and exploded instantly, and the force is the maximum, the engine is positioned at the uppermost starting point of a crankshaft, 0 degrees is over against 180 degrees to form linear hedging, the whole thrust cannot be converted into rotary power, and at the moment, a large part of energy is consumed.

2. The delta engine, also called rotor engine, invented in 1954 by the german feijakshi wankel, has an efficiency as high as 50%, but it has not been used for the last time because the rotor has a poor sealing property and leaks after a certain period of use.

3. The linear engine is characterized in that cylinders are respectively arranged on the left side and the right side, when the left side is ignited and combusted, a left cylinder connecting rod is pushed to move linearly to the right, a right cylinder is compressed and ignited, a right cylinder connecting rod is pushed to move linearly to the left, and then the left and right cylinders move linearly, the thermal efficiency conversion of the engine can reach about 42%, and the technical patent is occupied by Japanese. However, because the engine moves linearly, the engine cannot be directly used for pushing equipment such as automobiles and the like, and can only be used for a power generation device, and the motive energy of the engine is converted into electric energy to push a motor to rotate, so that the engine can be applied to other fields. Because the linear driving is influenced by the stroke of the cylinder, the linear length of the straight line is not as long as that of the circular arc, so the arrangement of the generator is greatly limited, the efficiency of the generator is not fully exerted, the electric pulse of the electricity generated by the linear engine is in a peak type state, and the electricity generation mode cannot form a stable sine wave. In addition, the conventional linear engine is substantially a two-stroke engine, and exhaust gas in a cylinder cannot be completely discharged, thereby greatly affecting combustion efficiency.

The patent ZL 201811219449.1 discloses a four-stroke four-cylinder opposite unidirectional rotation engine in 2019, 1 month 11, which is characterized in that a traditional cylinder is not directly used for a crank and is not directly pushed linearly, but the cylinder directly pushes a unidirectional wheel to do unidirectional motion, blasting oil gas cylinders are also arranged at the left end and the right end, two unidirectional wheels which are in a positive direction and a reverse direction are arranged in the middle, upper and lower (or left and right) connecting rods are correspondingly arranged in the 180-degree direction of the circumference of the unidirectional wheel and are connected with the left cylinder and the right cylinder respectively, when the left cylinder is pushed rightwards above the circle of the unidirectional wheel, the unidirectional wheel rotates rightwards and clockwise, when the right cylinder is pushed leftwards below the unidirectional wheel, the unidirectional wheel also rotates rightwards and clockwise, and thus, the rotational motion which is continuously towards one direction is obtained, and the engine solves the problems that the upper starting point and the linear of a straight line are limited because a crankshaft is not used, but its cylinder return is not straight line promotion, but realizes with the side direction promotion, and this kind of structure on the one hand return mechanism weight is big, and the side direction promotes the return simultaneously and will produce the side direction power and lose kinetic energy, and its structural strength also can receive very big influence to shorten life. More critical is that: the structure can not work at all, the reason is that a left connecting rod and a right connecting rod are simultaneously installed on the same pivot on the same one-way wheel, the two ends of the two connecting rods are respectively fixed at the two ends of the air cylinder, the air cylinder connecting rod moves linearly, the one-way wheel is in a rotary motion state, when the one-way wheel rotates, the connecting rod pivot moves along with the one-way wheel in an arc line simultaneously, at the moment, a triangular state can be generated between the air cylinder driving connecting rod and the hinged connecting rod on the one-way wheel, when the triangular state is generated between the main connecting rod and the three connecting rods of the one-way wheel, any one connecting rod has the function of extending or shortening, and otherwise, the one-way wheel can only move linearly and can not realize rotary.

From the performance viewpoint, when the rotating speeds of the crankshafts are the same, the working times of the two-stroke engine in unit time are 2 times of that of the four-stroke engine, theoretically, the power of the two-stroke engine is 2 times of that of the four-stroke engine (actually, the power of the two-stroke engine is only 1.5-1.7 times of that of the four-stroke engine, because the combustion is insufficient, the equivalent unit fuel efficiency is lower than that of the four-stroke engine), the power-up of the engine is higher, the dynamic property is better, the vibration of the engine is smaller, the size is smaller, the weight is lighter, the cost is lower, the quality is more reliable, the failure rate is lower. However, since the exhaust gas in the cylinder cannot be completely discharged after the combustion process in the two-stroke engine, the combustion efficiency is greatly affected. The four-stroke engine is more extensive in practical application, and under the condition that present fuel price is higher and environmental protection requires highly for its reason, four-stroke engine is higher than two-stroke engine's effect on combustion efficiency, and exhaust emissions is littleer, nevertheless because four-stroke compares with two-stroke, four-stroke structure is comparatively complicated, and is bulky, and weight is heavy, and manufacturing cost is higher, and power is not as good as two-stroke, and application range receives certain restriction, and the maintenance is also comparatively complicated.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention is directed to an integrated linear two-stroke engine.

The technical scheme of the invention is as follows: an integrated linear two-stroke engine is characterized in that:

A. the first combustion cylinder and the second combustion cylinder are fixed in a straight line in a butt joint mode, a first gasoline injection hole is formed in the first combustion cylinder, a second gasoline injection hole is formed in the second combustion cylinder, and a first exhaust hole is formed between the first gasoline injection hole and the second gasoline injection hole; a first air cylinder is arranged at the back of the first combustion cylinder, a first air inlet and a second air outlet are formed in the first air cylinder, a second air cylinder is arranged at the back of the second combustion cylinder, and a second air inlet and a third air outlet are formed in the second air cylinder;

B. the first combustion cylinder and the second combustion cylinder share one long piston connecting rod, two ends of the long piston connecting rod respectively penetrate out of the first air cylinder and the second air cylinder, a piston is arranged in the middle of a long piston connecting rod, a first combustion chamber is formed between the piston and the bottom of a first combustion cylinder, a second combustion chamber is formed between the piston and the bottom of a second combustion cylinder, a first air piston in a first air cylinder and a second air piston in a second air cylinder are both arranged on the long piston connecting rod, a first air compression chamber is formed between the first air piston and the bottom of the first air cylinder, the first air compression chamber is communicated with the first combustion chamber through a first one-way air inlet hole, a second air compression chamber is formed between the second air piston and the bottom of the second air cylinder, and the second air compression chamber is communicated with the second combustion chamber through a second one-way air inlet hole;

C. each combustion cylinder is provided with an oil injection cylinder, the oil injection cylinder supplies oil to the corresponding combustion cylinder through a gasoline injection hole, and an oil injection piston connecting rod of the oil injection cylinder is driven by the piston long connecting rod.

By adopting the technical scheme, after a first combustion chamber in a first combustion cylinder is ignited, combusted and exploded, the piston is pushed to move towards a second combustion cylinder, the long connecting rod of the piston, the first air piston and the second air piston move along with the piston, the first air piston compresses air in the first air cylinder into the first air compression chamber, after the piston passes through the first exhaust hole, the air in the first air compression chamber is rapidly pressed into the first combustion chamber through the first one-way air inlet hole, and then waste gas in the first combustion chamber is exhausted through the first exhaust hole; meanwhile, the second combustion chamber after the piston passes through the first air exhaust hole is in a closed state, at the moment, the second gasoline injection hole sprays fuel oil in a mist shape, the oil mist enters the second combustion chamber to be compressed, meanwhile, under the action of the second air piston, the third air exhaust hole discharges air on the outer end face of the second air piston out of the second air cylinder, and at the moment, the second air inlet hole sucks fresh air into the second air compression chamber to wait for compression; and at the same time, the piston long connecting rod drives the corresponding oil injection cylinder to inject atomized fuel oil into the second combustion chamber for compression combustion, so that the first combustion action is completed. And vice versa, after the second combustion chamber in the second combustion cylinder is ignited, combusted and exploded, the piston is pushed to move towards the first combustion cylinder, the long piston connecting rod, the first air piston and the second air piston move along with the piston, waste gas is discharged from the second combustion chamber, fresh air is sucked into the first air cylinder, the long piston connecting rod drives the corresponding oil injection cylinder to inject atomized fuel oil into the first combustion chamber for compression and combustion, and the second combustion action is completed. Along with the alternative ignition, combustion and blasting of the first combustion chamber and the second combustion chamber, the long connecting rod of the piston makes reciprocating linear motion and outputs power.

In order to simplify the structure and ensure that the linkage synchronism of oil injection and the piston long connecting rod is good, the first combustion cylinder is provided with a first oil injection cylinder, a first oil injection piston connecting rod of the first oil injection cylinder is connected with the piston long connecting rod through a first swing mechanism, the first oil injection cylinder is provided with a first oil inlet hole and a first oil outlet hole, and the first oil outlet hole is connected with a first gasoline injection hole of the first combustion cylinder after being connected with a first oil injection nozzle in series through a first oil outlet pipe; the second combustion cylinder is provided with a second oil injection cylinder, a second oil injection piston connecting rod of the second oil injection cylinder is connected with the piston long connecting rod through a second swing mechanism, a second oil inlet hole and a second oil outlet hole are formed in the second oil injection cylinder, and the second oil outlet hole is connected with a second gasoline injection hole of the second combustion cylinder after being connected with a second oil nozzle in series through a second oil outlet pipe.

Preferably, the first oil injection nozzle is arranged at the position of the first gasoline injection hole, and a one-way valve is arranged on the first oil injection nozzle; the second fuel spray nozzle is arranged at the position of the second gasoline injection hole, and a one-way valve is also arranged on the second fuel spray nozzle.

In order to ensure simple structure, easy assembly and flexible and reliable operation, the first swing mechanism and the second swing mechanism have the same structure and respectively comprise an oiling connecting rod, an oiling connecting rod rotating wheel and an oiling pushing block, the middle part of the oiling connecting rod is hinged with a first oiling connecting rod rotating pin, one end of the oiling connecting rod is hinged with an oiling piston connecting rod corresponding to an oiling cylinder through a second oiling connecting rod rotating pin, the other end of the oiling connecting rod is provided with the oiling connecting rod rotating wheel, the oiling connecting rod rotating wheel is in rolling fit with the oiling pushing block, and the oiling pushing block is fixed at the end part of a piston long connecting rod.

And the oil injection pushing block is provided with an inclined plane matched with the oil injection connecting rod rotating wheel. According to the scheme, when the oiling pushing block pushes the rotating wheel of the oiling connecting rod at initialization, the rotating wheel is in end surface contact with the oiling pushing block, so that the oiling pushing block synchronously and correspondingly swings, and fuel oil in the first oiling cylinder or the second oiling cylinder is instantly extruded out; after the extrusion of the set oil amount is finished, because the inclined plane of the oil injection pushing block is in a downward sliding oblique line state, the rotating wheel moves towards the low point direction of the inclined plane, the piston in the first oil injection cylinder or the piston in the second oil injection cylinder at the moment gradually returns to the position before advancing, the oil inlet hole of the first oil injection cylinder or the second oil injection cylinder starts to feed oil at the moment, and the next oil injection piston is waited to be pushed.

Preferably, the combustion cylinder and the corresponding air cylinder share the same wall, and a one-way air inlet hole is formed in the common wall and is a straight-through hole, and a one-way valve is arranged in the one-way air inlet hole.

The invention has the beneficial effects that:

1) the invention has the advantages of the traditional two-stroke engine and the four-stroke engine, adopts the two-stroke mode, solves the problem that the ignition process can be completed only by combustion explosion, exhaust, air suction and compression in the four-stroke engine, and simultaneously adopts the mode of atomizing fuel twice, so that the fuel oil has smaller atomized particles, more complete combustion and stronger explosive force.

2) The invention adopts the mode of driving by the swing mechanism to push the oil injection cylinder to supply oil to the combustion cylinder, has simple structure, flexible operation and good linkage synchronism with the long connecting rod of the piston.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

as shown in fig. 1, the first combustion cylinder 6A and the second combustion cylinder 6B are fixed in a straight line in a butt joint, the first combustion cylinder 6A is on the left of the right second combustion cylinder 6B, and the first combustion cylinder 6A and the second combustion cylinder 6B preferably share one cylinder. A first gasoline injection hole 21A is formed in the annular wall of the first combustion cylinder 6A, a second gasoline injection hole 21B is formed in the annular wall of the second combustion cylinder 6B, a first exhaust hole 9 is arranged between the first gasoline injection hole 21A and the second gasoline injection hole 21B, the first exhaust hole 9 is formed in the first combustion cylinder 6A or the second combustion cylinder 6B, and the distance from the first exhaust hole 9 to the first gasoline injection hole 21A is equal to the distance from the first exhaust hole 9 to the second gasoline injection hole 21B.

As shown in fig. 1, a first air cylinder 1A is provided behind a first combustion cylinder 6A, a first intake port 4A is opened in a circumferential wall of the first air cylinder 1A, and a second exhaust port 5A is opened in a right end wall of the first air cylinder 1A. The back of the second combustion cylinder 6B is provided with a second air cylinder 1B, the annular wall of the second air cylinder 1B is provided with a second air inlet hole 4B, and the left end wall of the second air cylinder 1B is provided with a third air outlet hole 5B. The axial leads of the first combustion cylinder 6A, the first air cylinder 1A, the second combustion cylinder 6B and the second air cylinder 1B are located on the same straight line.

As shown in fig. 1, the first combustion cylinder 6A and the second combustion cylinder 6B share one long piston rod 12, and the left end of the long piston rod 12 protrudes from the second air cylinder 1B, and the right end of the long piston rod 12 protrudes from the first air cylinder 1A. A piston 7 is fixedly arranged in the middle of the piston long connecting rod 12, a first combustion chamber 8A is formed between the piston 7 and the bottom of the first combustion cylinder 6A, and a second combustion chamber 8B is formed between the piston 7 and the bottom of the second combustion cylinder 6B. The first air piston 2A in the first air cylinder 1A and the second air piston 2B in the second air cylinder 1B are both fixedly provided to the piston long connecting rod 12. A first air compression chamber 3A is formed between the first air piston 2A and the bottom of the first air cylinder 1A, and the first air compression chamber 3A is communicated with the first combustion chamber 8A through a first one-way air inlet hole 11A. The first combustion cylinder 6A is preferably co-walled with the first air cylinder 1A, the first unidirectional air intake port 11A is formed in the co-wall between the first combustion cylinder 6A and the first air cylinder 1A, the first unidirectional air intake port 11A is a through hole, and a check valve is installed in the through hole to ensure unidirectional flow of air from the first air compression chamber 3A to the first combustion chamber 8A. Of course, as an equivalent alternative, the first combustion cylinder 6A and the first air cylinder 1A may be respectively provided with a first one-way air intake hole 11A with a one-way valve, and the two first one-way air intake holes 11A are connected through a pipeline.

A second air compression chamber 3B is formed between the second air piston 2B and the bottom of the second air cylinder 1B, and the second air compression chamber 3B is communicated with the second combustion chamber 8B through a second one-way air inlet hole 11B. The second combustion cylinder 6B is preferably coextensive with the second air cylinder 1B, the second unidirectional air intake port 11B is formed in the wall between the second combustion cylinder 6B and the second air cylinder 1B, and the second unidirectional air intake port 11B is a through hole having a check valve mounted therein to ensure unidirectional air flow from the second air compression chamber 3B to the second combustion chamber 8B. Of course, as an equivalent alternative, the second combustion cylinder 6B and the second air cylinder 1B may be respectively provided with a second one-way air intake hole 11B with a one-way valve, and the two second one-way air intake holes 11B are connected through a pipeline.

As shown in fig. 1, the first combustion cylinder 6A is provided with a first injection cylinder 20A, the second combustion cylinder 6B is provided with a second injection cylinder 20B, and the first injection cylinder 20A and the second injection cylinder 20B are disposed oppositely on a straight line. The piston connecting rod of the first oil injection cylinder 20A is a first oil injection piston connecting rod 17A, and the first oil injection piston connecting rod 17A is connected with the piston long connecting rod 12 through a first swinging mechanism. A first oil filling chamber 23A is formed between a piston in the first oil filling cylinder 20A and the cylinder bottom of the piston, a first oil inlet hole 18A is formed in the annular wall of the first oil filling cylinder 20A, a first oil outlet hole is formed in the cylinder bottom of the first oil filling cylinder 20A, and the first oil outlet hole is connected with a first gasoline filling hole 21A of the first combustion cylinder 6A after being connected with a first oil nozzle 10A in series through a first oil outlet pipe 19A. Preferably, the first oil jet 10A is installed at the first gasoline injection hole 21A, and the first oil jet 10A is provided with a check valve to prevent gas in the first combustion chamber 8A from flowing backward into the first outlet pipe 19A.

The piston connecting rod of the second oil injection cylinder 20B is a second oil injection piston connecting rod 17B, and the second oil injection piston connecting rod 17B is connected with the piston long connecting rod 12 through a second swinging mechanism. A second oil injection chamber 23B is formed between the piston in the second oil injection cylinder 20B and the cylinder bottom thereof, a second oil inlet hole 18B is formed in the annular wall of the second oil injection cylinder 20B, a second oil outlet hole is formed in the cylinder bottom of the second oil injection cylinder 20B, and the second oil outlet hole is connected with a second gasoline injection hole 21B of the second combustion cylinder 6B after being connected with a second oil injection nozzle 10B in series through a second oil outlet pipe 19B. Preferably, the second oil jet 10B is installed at the second gasoline injection hole 21B, and a check valve is also installed on the second oil jet 10B to prevent gas in the second combustion chamber 8B from flowing back into the second oil outlet pipe 19B.

As shown in fig. 1, the first and second swing mechanisms have the same structure, and are composed of an oil injection connecting rod 22, an oil injection connecting rod rotating wheel 14, an oil injection pushing block 13, and the like, the middle part of the oil injection connecting rod 22 is hinged to a first oil injection connecting rod rotating pin 15, one end of the oil injection connecting rod 22 is hinged to an oil injection

piston connecting rod

17A or 17B of the corresponding oil injection cylinder through a second oil injection connecting rod rotating pin 16, the other end of the oil injection connecting rod 22 is provided with the oil injection connecting rod rotating wheel 14, the oil injection connecting rod rotating wheel 14 is in rolling fit with the oil injection pushing block 13, and the pushing oil injection block 13 is fixed at the left end part or the right end part. Inclined planes matched with the oil injection connecting rod rotating wheels 14 are arranged on the oil injection pushing blocks 13, the inclined planes on the left oil injection pushing block 13 are higher at the left and lower at the right, and the inclined planes on the right oil injection pushing block 13 are higher at the right and lower at the left.

The working principle of the invention is as follows:

after a first combustion chamber 8A in a first combustion cylinder 6A is ignited, combusted and exploded, a piston 7 is pushed leftwards, a piston long connecting rod 12 is driven to move leftwards, a first air piston 2A connected to the piston long connecting rod 12 also moves leftwards, the first air piston 2A compresses air in a first air cylinder 1A into a first air compression chamber 3A, after the piston 7 passes through a first exhaust hole 9, the air in the first air compression chamber 3A is quickly pressed into the first combustion chamber 8A through a first one-way air inlet hole 11A, and then waste gas in the first combustion chamber 8A is exhausted through the first exhaust hole 9; meanwhile, the second combustion chamber 8B after the piston 7 passes through the first exhaust hole 9 is in a closed state, at this time, the second gasoline injection hole 10B sprays out fuel in a mist shape, oil mist enters the second combustion chamber 8B for compression, at the same time, under the action of the second air piston 2B, the third exhaust hole 5B discharges air on the left end face of the second air piston 2B out of the second air cylinder 1B, and at this time, the second air inlet hole 4B sucks fresh air into the second air compression chamber 3B to wait for compression; meanwhile, in the process that the oil injection pushing block 13 arranged at the left end of the long piston connecting rod 12 moves leftwards, the oil injection connecting rod rotating wheel 14 is pushed, the oil injection connecting rod rotating wheel 14 drives the left oil injection connecting rod 22 to swing rightwards through the first oil injection connecting rod rotating pin 15, the left second oil injection connecting rod rotating pin 16 drives the second oil injection piston connecting rod 17B to retract, the piston on the second oil injection piston connecting rod 17B extrudes the fuel oil in the second oil injection chamber 23B out of a second oil outlet hole, the fuel oil passes through the second oil outlet pipe 19B, and finally the fuel oil is atomized by the second oil injection nozzle 10B and then is injected into the second combustion chamber 8B for compression combustion, so that the first combustion action is completed.

After the second combustion chamber 8B is ignited, combusted and exploded, the piston 7 is pushed to the right direction, meanwhile, the piston long connecting rod 12 is driven to move to the right direction, the second air piston 2B connected to the piston long connecting rod 12 also moves to the right direction, the second air piston 2B compresses the air in the second air cylinder 1B into the second air compression chamber 3B, after the piston 7 passes through the first exhaust hole 9, the air in the second air compression chamber 3B is rapidly pressed into the second combustion chamber 8B through the second one-way air inlet hole 11B, and then the waste gas in the second combustion chamber 8B is exhausted through the first exhaust hole 9; meanwhile, the first combustion chamber 8A after the piston 7 passes through the first exhaust hole 9 is in a closed state, at this time, the first gasoline injection hole 10A sprays out the fuel in a mist shape, the oil mist enters the first combustion chamber 8A to be compressed, at the same time, under the action of the first air piston 2A, the second exhaust hole 5A discharges the air on the right end face of the first air piston 2A out of the first air cylinder 1A, and at this time, the first air inlet hole 4A sucks fresh air into the first air compression chamber 3A to wait for compression; meanwhile, in the process that the oil injection pushing block 13 arranged at the right end of the long piston connecting rod 12 moves rightwards, the oil injection connecting rod rotating wheel 14 is pushed, the oil injection connecting rod rotating wheel 14 drives the right oil injection connecting rod 22 to swing leftwards through the first oil injection connecting rod rotating pin 15, the right second oil injection connecting rod rotating pin 16 drives the first oil injection piston connecting rod 17A to retract, the piston on the first oil injection piston connecting rod 17A presses the fuel oil in the first oil injection chamber 23A out of the first oil outlet hole, the fuel oil passes through the first oil outlet pipe 19A, and finally the fuel oil is atomized by the first oil nozzle 10A and then is sprayed into the first combustion chamber 8A for compression and combustion, so that the second combustion action is completed.

The piston long connecting rod 12 makes reciprocating linear motion along with the alternative ignition, combustion and explosion of the first combustion chamber 8A and the second combustion chamber 8B, and power is output.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. An integrated linear two-stroke engine is characterized in that:

A. the first combustion cylinder (6A) and the second combustion cylinder (6B) are fixed in a straight line in a butt joint mode, a first gasoline injection hole (21A) is formed in the first combustion cylinder (6A), a second gasoline injection hole (21B) is formed in the second combustion cylinder (6B), and a first exhaust hole (9) is formed between the first gasoline injection hole (21A) and the second gasoline injection hole (21B); a first air cylinder (1A) is arranged behind the first combustion cylinder (6A), a first air inlet hole (4A) and a second exhaust hole (5A) are formed in the first air cylinder (1A), a second air cylinder (1B) is arranged behind the second combustion cylinder (6B), and a second air inlet hole (4B) and a third exhaust hole (5B) are formed in the second air cylinder (1B);

B. the first combustion cylinder (6A) and the second combustion cylinder (6B) share one piston long connecting rod (12), two ends of the piston long connecting rod (12) respectively penetrate out of the first air cylinder (1A) and the second air cylinder (1B), a piston (7) is arranged in the middle of the piston long connecting rod (12), a first combustion chamber (8A) is formed between the piston (7) and the bottom of the first combustion cylinder (6A), a second combustion chamber (8B) is formed between the piston (7) and the bottom of the second combustion cylinder (6B), a first air piston (2A) in the first air cylinder (1A) and a second air piston (2B) in the second air cylinder (1B) are both arranged on the piston long connecting rod (12), and a first air compression chamber (3A) is formed between the first air piston (2A) and the bottom of the first air cylinder (1A), the first air compression chamber (3A) is communicated with the first combustion chamber (8A) through a first one-way air inlet hole (11A), a second air compression chamber (3B) is formed between the second air piston (2B) and the bottom of the second air cylinder (1B), and the second air compression chamber (3B) is communicated with the second combustion chamber (8B) through a second one-way air inlet hole (11B);

C. each combustion cylinder is provided with an oil injection cylinder, the oil injection cylinder supplies oil to the corresponding combustion cylinder through a gasoline injection hole, and an oil injection piston connecting rod of the oil injection cylinder is driven by the piston long connecting rod (12).

2. The integrated linear two-stroke engine according to claim 1 wherein: the first combustion cylinder (6A) is provided with a first oil injection cylinder (20A), a first oil injection piston connecting rod (17A) of the first oil injection cylinder (20A) is connected with the piston long connecting rod (12) through a first swinging mechanism, a first oil inlet hole (18A) and a first oil outlet hole are formed in the first oil injection cylinder (20A), and the first oil outlet hole is connected with a first gasoline injection hole (21A) of the first combustion cylinder (6A) after being connected with a first oil injection nozzle (10A) in series through a first oil outlet pipe (19A); the second combustion cylinder (6B) is provided with a second oil injection cylinder (20B), a second oil injection piston connecting rod (17B) of the second oil injection cylinder (20B) is connected with the piston long connecting rod (12) through a second swing mechanism, a second oil inlet hole (18B) and a second oil outlet hole are formed in the second oil injection cylinder (20B), and the second oil outlet hole is connected with a second gasoline injection hole (21B) of the second combustion cylinder (6B) after being connected with a second oil injection nozzle (10B) in series through a second oil outlet pipe (19B).

3. The integrated linear two-stroke engine according to claim 2 wherein: the first oil nozzle (10A) is arranged at the first gasoline injection hole (21A), and a one-way valve is arranged on the first oil nozzle (10A); the second oil nozzle (10B) is arranged at the second gasoline injection hole (21B), and a one-way valve is also arranged on the second oil nozzle (10B).

4. An integrated linear two-stroke engine according to claim 2 or 3, wherein: the structure of the first swing mechanism is the same as that of the second swing mechanism, the first swing mechanism and the second swing mechanism respectively comprise an oil injection connecting rod (22), an oil injection connecting rod rotating wheel (14) and an oil injection pushing block (13), the middle part of the oil injection connecting rod (22) is hinged to a first oil injection connecting rod rotating pin (15), one end of the oil injection connecting rod (22) is hinged to an oil injection piston connecting rod corresponding to an oil injection cylinder through a second oil injection connecting rod rotating pin (16), the oil injection connecting rod rotating wheel (14) is installed at the other end of the oil injection connecting rod (22), the oil injection connecting rod rotating wheel (14) is in rolling fit with the oil injection pushing block (13), and the oil injection pushing block (13) is fixed at the end.

5. The integrated linear two-stroke engine according to claim 4 wherein: the oil injection pushing block (13) is provided with an inclined surface matched with the oil injection connecting rod rotating wheel (14).

6. An integrated linear two-stroke engine according to claim 1 or 2 or 3 or 5, wherein: the combustion cylinder and the corresponding air cylinder share the same wall, and a one-way air inlet hole is formed in the common wall and is a straight-through hole, and a one-way valve is arranged in the one-way air inlet hole.