CN215633338U - Direct-injection internal combustion engine with two combustion-pressure cylinders separated and connecting rods in straight-going horizontal opposition - Google Patents

Abstract

The utility model belongs to the field of internal combustion engines, and particularly relates to a direct injection internal combustion engine with two combustion pressure cylinder separated connecting rods in a straight-going and horizontally-opposed mode. The specific technical scheme is as follows: the internal combustion engine comprises at least two groups of cylinder mechanisms, the first cylinder mechanism comprises a first combustion chamber and a combustion chamber piston which are arranged in a combustion pressure separation mode, a first compression chamber and a compression chamber piston, and the first combustion chamber piston and the first compression chamber piston are connected through a first linear connecting rod; the second cylinder mechanism is the same as the first cylinder mechanism; a linkage gear is arranged between the two linear connecting rods to link the two linear connecting rods to move straightly, so that the two groups of cylinder body mechanisms are interacted to complete four strokes of combustion, compression, exhaust and air suction. The internal combustion engine abandons a conventional crankshaft mechanism, the connecting rod moves straightly, the stroke of the connecting rod is not limited by the cylinder diameter any more, the output efficiency is improved, the emission noise and the vibration noise are reduced, and the internal combustion engine runs more stably and efficiently.

Description

Direct-injection internal combustion engine with two combustion-pressure cylinders separated and connecting rods in straight-going horizontal opposition

Technical Field

The utility model belongs to the field of internal combustion engines, and particularly relates to a direct injection internal combustion engine with two combustion pressure cylinder separated connecting rods in a straight-going and horizontally-opposed mode.

Background

Since the birth of piston reciprocating internal combustion engines, many problems are faced, mainly expressed in three aspects: low efficiency, complex structure and large vibration noise. The internal combustion engine mainly comprises a gasoline internal combustion engine and a diesel internal combustion engine according to fuel, and mainly comprises a straight row (L for short) and a transverse row (H for short) according to cylinder body arrangement, wherein a V-shaped arrangement is arranged between the two types. The horizontal internal combustion engine is also called a horizontal opposed internal combustion engine, and the horizontal opposed internal combustion engine is designed to overcome the defects of large vibration and large noise. The horizontal opposed internal combustion engine has outstanding advantages, but has complex structure and limited improvement, so that the application of the horizontal opposed internal combustion engine is greatly limited. How to further improve the efficiency of the horizontally opposed internal combustion engine, simplify the structure and reduce the vibration noise is a tightening research in all countries in the world. In which the separation of the combustion chamber from the compression chamber is a very important improvement direction, and the straight-going of the connecting rod is also an important improvement direction, but, to date, all the improvements do not achieve the goal of simple and reliable combustion efficiency.

In the aspect of separating the combustion chamber and the pressure chamber, CN1081735C discloses a two-stroke internal combustion engine, and CN206513438U discloses an engine with independent combustion chamber and separated working and compression chambers, although both adopt the technology of separating the combustion chamber and the compression chamber, both adopt a connecting rod crankshaft system to connect a piston, and the problems of complex structure of the crankshaft system, high noise and the like are not overcome.

In the aspect of connecting rod operation, CN102042083B discloses a quasi-free piston internal combustion engine, CN102042083 discloses an internal combustion engine combining a straight-moving connecting rod and a crankshaft, CN202628275U discloses a straight-shaft driving internal combustion engine, CN204476561U discloses a double-cylinder straight-rod mutual-impacting internal combustion engine, CN102996244A discloses a straight-handle engine, CN102996245A discloses a straight-handle linear internal combustion engine, and CN202628275U discloses a straight-shaft driving internal combustion engine, the first design is separated from combustion pressure, but is provided with a straight-rod connection and a crankshaft connection, the straight rod and the crankshaft alternately output power, so that the internal combustion engine has the advantages of partial straight-moving connecting rods and the defects of partial crankshaft connection, the latter six pistons are connected between a combustion chamber and a compression chamber through the straight rods, the outer surface of the straight rods is provided with racks meshed with gears, but the gears need an external power source to drive the piston connecting rod to move so as to drive the piston to move, and the working stroke is not prolonged, and the structure is complex, The work efficiency is low. Although the working stroke of the novel internal combustion engine published by the Japanese Toyota automobile is increased, the ratio of the working stroke to the cylinder diameter is from 1: 1 to 1.5: 1, but still a crankshaft system is reserved, and the problems of complex structure and large vibration noise exist. At present, a special engine without a crankshaft system and a straight-moving connecting rod system is internationally available, but the special engine is only suitable for the special engine, and the common engine needs to be improved around fuel pressure separation and connecting rod straight-moving.

In conclusion, compression ignition separation improves the efficiency of the internal combustion engine, but the prior art improves or mostly keeps a connecting rod crankshaft complex system, or has the problems that four strokes can not be mutually linked, a special power gear is required for driving, and the structure is relatively complex. The scheme overcomes the defects and is a novel design invention with high efficiency, low noise, simple mechanism and stable operation.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems in the prior art, the utility model aims to provide a direct injection internal combustion engine with a combustion pressure two-cylinder separation connecting rod in a straight-going and horizontally-opposite mode.

In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows: the combustion-pressure two-cylinder separated connecting rod straight-going horizontally-opposed direct injection internal combustion engine comprises two groups of first cylinder mechanisms and second cylinder mechanisms which are arranged in parallel and have the same structure, wherein each first cylinder mechanism comprises a first combustion chamber and a first compression chamber which are arranged separately, a first combustion chamber piston and a first compression chamber piston are respectively arranged in each first combustion chamber and each first compression chamber, and the first combustion chamber piston and the first compression chamber piston are connected through a first straight-line connecting rod; a linkage mechanism is arranged between the first linear connecting rod and the second linear connecting rod, and the linkage mechanism links the first linear connecting rod and the second linear connecting rod (5-2) to move in opposite directions; the first combustion chamber and the second combustion chamber are connected with a gas supply mechanism, an exhaust mechanism and an oil supply mechanism, and the first compression chamber and the second compression chamber are connected with a gas inlet mechanism.

Preferably: the linkage mechanism comprises gears (or pulleys), and racks meshed with the gears are arranged on the side walls of the two linear connecting rods.

Preferably: the number of the first cylinder body mechanisms is at least two, a group of linkage mechanisms are arranged between every two adjacent first cylinder body mechanisms, and the linkage mechanisms link the adjacent two first linear connecting rods to move reversely.

Preferably: the gas supply mechanism comprises a first cavity which is axially arranged along the first straight connecting rod, and the first cavity is communicated with a first combustion chamber and a first compression chamber.

Preferably: and a first check valve and a second check valve are respectively arranged in two ends of the first cavity, the first check valve allows gas to flow into the first combustion chamber from the first cavity, and the second check valve allows gas to flow into the first cavity from the first compression chamber.

Preferably: the first compression chamber piston volume is 1/4 of the first combustion chamber piston volume, the piston ring of the first compression chamber piston is 1/2 of the piston ring of the first combustion chamber piston.

Compared with the prior art, the utility model has the following beneficial effects:

(1) the utility model adopts the combustion chamber and the compression chamber which are separately designed, the intensity of the compressed gas can be set by manual calculation, and the additional pressurization system is abandoned, thereby simplifying the mechanism. The combustion pressure is separated, and the temperature of the compression chamber is more than four times lower than that of the combustion chamber, so that the piston of the compression chamber only keeps the maximum one-fourth volume of the piston of the combustion chamber, the piston of the compression chamber is greatly lightened, certain power loss can be reduced, and the mechanism can be simplified.

(2) The utility model adopts the straight-going connecting rod to directly link the combustion chamber piston and the compression chamber piston and abandons a crankshaft system, so that the mechanism is simplified, and the use of the connecting rod is reduced by half. More importantly, the prior art (the straight rod technology in the CN102996245A patent) does not need to singly arrange four gears to maintain or specially arrange a power gear to drive a piston to move, but only directly connects a combustion chamber piston and a compression chamber piston through a straight connecting rod to drive the connecting rod to move straight, a specific power gear is not needed to drive the straight connecting rod, a gear is arranged between every two adjacent straight connecting rods, the two straight connecting rods are directly linked to move in opposite directions, the linear movement of the connecting rod enables the curve movement with a crankshaft system to be changed into the linear movement without the crankshaft system, the stroke of the connecting rod is not limited by the cylinder diameter any more, the stroke can be prolonged as required, the exhaust temperature is greatly reduced, and the thermal efficiency of the internal combustion engine is improved. If the stroke is doubled, the temperature of the exhaust gas of the internal combustion engine can be reduced by 600K-1000K theoretically, and the thermal efficiency is improved by 10% -25%.

(3) The utility model adopts two chambers (combustion chamber and compression chamber) to share one straight connecting rod, four chambers (cylinders) share two straight connecting rods, six chambers (cylinders) share three connecting rods, etc., and the four chambers (cylinders) or more than four chambers (cylinders) are linked by two or more straight connecting rods linked through gears. When two combustion chambers are combusted, the two compression chambers can be compressed, and simultaneously, one combustion chamber exhausts air, one compression chamber admits air, and four strokes synchronously run. Six chambers share three straight connecting rods and two linkage gears, eight chambers share four straight connecting rods and three linkage gears, and the like, so that the internal combustion engine is simpler in structure and more stable and reliable in operation.

(4) The straight connecting rod of the utility model can freely extend the stroke, greatly reduce the exhaust noise and can be made into a relatively silent internal combustion engine if necessary. The crankshaft system is abandoned, and the noise of the crankshaft system is directly eliminated; the combustion and compression two pistons are fixedly connected with the connecting rod in a sealing way into a whole, so that the operation is more stable, and the vibration noise of the engine body can be greatly reduced.

(5) The two-chamber piston of the combustion chamber and the compression chamber is integrated with the connecting rod, so that the internal combustion engine can run more stably and reliably; the two combustion chambers (cylinders) are arranged on the same side, and the exhaust pipe and the intake pipe are arranged on the two sides respectively, so that the defects that the intake pipe and the exhaust pipe are arranged on the two sides of the horizontally-opposite internal combustion engine and the maintenance is inconvenient are overcome; two combustion chambers and two compression chambers are respectively arranged at two sides, one combustion piston of one combustion chamber moves, and the other three pistons move passively, so that the operation of one combustion chamber is slightly abnormal, the operation of the other combustion chamber is not influenced, and the defect that a horizontally-opposed internal combustion engine is unsmooth in operation due to different scales in the combustion chambers is overcome.

(6) The two pistons of the combustion chamber and the compression chamber are integrated with the connecting rod, so that the compression chamber at the other end is compressed simultaneously when one end of a group of cylinders is combusted to do work, the pistons run to the top dead center and the bottom dead center and are all restrained by residual compressed gas, the exhaust valve of the combustion chamber is opened and the linkage gear, the design impact force can be accurately calculated, the pistons finally run and are restrained by the compressed gas without directly impacting the cylinder cover, the control of a crankshaft system on the top dead center and the bottom dead center is avoided, and the power waste is also avoided; if the compression is insufficient, the power can be compensated by the output power.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the drawings, the reference numbers: the device comprises a first combustion chamber 1-1, a second combustion chamber 1-2, a first compression chamber 2-1, a second compression chamber 2-2, a first combustion chamber piston 3-1, a second combustion chamber piston 3-2, a first compression chamber piston 4-1, a second compression chamber piston 4-2, a first straight connecting rod 5-1, a second straight connecting rod 5-2, a first cavity 6-1, a second cavity 6-2, an exhaust and oil supply touch controller system 7, a first one-way valve 8-1 in the first cavity, a first one-way valve 8-2 in the second cavity, a second one-way valve 9-1 in the first cavity, a second one-way valve 9-2 in the second cavity, a gear 10, a first compression chamber air inlet mechanism 11-1 and a second compression chamber air inlet mechanism 11-2.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The utility model discloses a direct injection internal combustion engine with two combustion-pressure cylinders and separated connecting rods in a straight-going and horizontally-opposite mode, which comprises two groups of cylinder mechanisms which are arranged in parallel and symmetrically, wherein the first group of cylinder mechanisms comprise a first combustion chamber 1-1 and a first compression chamber 2-1 which are arranged in a separated mode, a first combustion chamber piston 3-1 and a first compression chamber piston 4-1 are respectively arranged in the first combustion chamber 1-1 and the first compression chamber 2-1, the first combustion chamber piston 3-1 and the first compression chamber piston 4-1 are connected through a first straight connecting rod 5-1, and the first combustion chamber piston 3-1 and the first compression chamber piston 4-1 are connected in a straight line mode. The second group of cylinder mechanisms comprises a second combustion chamber 1-2 and a second compression chamber 2-2 which are separately arranged, a second combustion chamber piston 3-2 and a second compression chamber piston 4-2 are respectively arranged in the second combustion chamber 1-2 and the second compression chamber 2-2, the second combustion chamber piston 3-2 and the second compression chamber piston 4-2 are connected through a second linear connecting rod 5-2, and the second combustion chamber piston 3-2 and the second compression chamber piston 4-2 are linearly connected. A linkage mechanism such as a gear 10 is arranged between the first linear connecting rod 5-1 and the second linear connecting rod 5-2, and a pulley design can also be adopted, so that the second linear connecting rod 5-2 moves reversely when the first linear connecting rod 5-1 moves, and vice versa. The adjacent first combustion chamber 1-1 and the second combustion chamber 1-2 combust successively, and the first linear connecting rod 5-1 and the second linear connecting rod 5-2 are driven to do linear movement back and forth between the first combustion chamber 1-1 and the second combustion chamber 1-2 and between the first compression chamber 2-1 and the second compression chamber 2-2 successively, so that the adjacent two cylinder mechanisms are driven to realize four strokes of air suction, compression, combustion and exhaust. It should be noted that the linkage mechanism of the utility model, such as the linkage gear, does not need an external power source, and can drive the linkage mechanism to work only by the linkage of the cylinder body straight-moving connecting rod and the linkage gear mechanism in a working state.

It should be noted that the first linear connecting rod 5-1 is connected with the first combustion chamber piston 3-1 and the second compression chamber piston 4-1 by a fixed seal to form a fixed sealed whole. The second connecting rod and the corresponding two-chamber piston are also fixedly connected and integrated into a whole. Because the two linear connecting rods are connected with the corresponding two chambers in a straight line, the diameters and the lengths of the two groups of cylinder body chambers can be randomly prolonged according to requirements, so that strokes of doing work and the like can be prolonged according to requirements.

The utility model adopts a first combustion chamber 1-1, a second combustion chamber 1-2, a first compression chamber 2-1 and a second compression chamber 2-2 which are separately designed, and simultaneously adopts a first linear connecting rod 5-1 and a second linear connecting rod 5-2 to respectively link a first combustion chamber piston 3-1, a first compression chamber piston 4-1, a second combustion chamber piston 3-2 and a second compression chamber piston 4-2 to move, thereby saving the conventional crankshaft mechanism, simultaneously reducing the use of the connecting rods by half, and enabling the stroke of the connecting rods to be not limited by the cylinder diameter any more because the connecting rods are in linear motion. The utility model has simple structure, stable operation and prolonged stroke, and by prolonging the stroke, high-pressure gas is fully combusted, the exhaust temperature is greatly reduced, and the thermal efficiency is greatly improved; the gas pressure can be reduced while the stroke is prolonged, so that the emission noise is greatly reduced, the operation of the internal combustion engine is more stable, and the vibration noise is reduced.

It should be noted that the example of fig. 1 is not limited to a horizontal internal combustion engine, and the internal combustion engine of the present invention may be a vertical internal combustion engine. Whether the internal combustion engine is a horizontal internal combustion engine or a vertical internal combustion engine, the internal combustion engine comprises combustion chambers and compression chambers which are separately arranged, two or more combustion chambers are arranged at the same side, two or more compression chambers are arranged at the same side, or pistons in two or more groups of cylinder body mechanisms are directly and hermetically connected and fixed by adopting linear connecting rods and the like, and the internal combustion engine belongs to the protection scope of the utility model.

The first combustion chamber 1-1 and the second combustion chamber 1-2 are also connected with an exhaust and oil supply mechanism, and the exhaust and oil supply mechanism is controlled by an exhaust and oil supply touch controller system 7. The first compression chamber 2-1 is connected with a first compression chamber air inlet mechanism 11-1, and the second compression chamber 2-2 is connected with a second compression chamber air inlet mechanism 11-2. It should be noted that the present invention does not improve the exhaust mechanism and the oil supply mechanism of the internal combustion engine, and these mechanisms are the prior art and are not described herein.

If the linkage mechanism adopts a gear mechanism, the linkage mechanism comprises a gear 10, and racks meshed with the gear 10 are arranged on the side walls of the first linear connecting rod 5-1 and the second linear connecting rod 5-2. When the gear 10 is driven by the first linear connecting rod 5-1, the adjacent second linear connecting rod 5-2 is driven to move in the opposite direction. It should be noted that the gear 10 of the device does not need to be provided with an external power source, and the gear 10 can be driven to rotate only by the first linear connecting rod 5-1 in a working state, so as to drive the second linear connecting rod 5-2 or the second linear connecting rod 5-2 to move and drive the gear 10 to rotate, thereby driving the first linear connecting rod 5-1 to move.

Furthermore, the number of the cylinder body mechanisms is at least two, a group of linkage mechanisms is arranged between every two adjacent groups of cylinder body mechanisms, and the linkage mechanisms are linked with the adjacent first linear connecting rods 5-1 and the adjacent second linear connecting rods 5-2 to move reversely. For example, when the number of the cylinder mechanisms is three, two gears are provided, and the adjacent linear connecting rods are in reverse motion.

The specific implementation mode of the gas supply mechanism is that the gas supply mechanism comprises a first cavity 6-1 and a second cavity 6-2 which are respectively arranged along the axial direction of the first linear connecting rod 5-1 and the second linear connecting rod 5-2, and a conventional gas inlet mechanism communicated with the first compression chamber 2-1 and the second compression chamber 2-2, wherein the first cavity 6-1 and the second cavity 6-2 are used for storing compressed gas, and delivering the compressed gas to the first combustion chamber 1-1 and the second combustion chamber 1-2 through a control valve. Specifically, the hollow structures formed by the first linear connecting rod 5-1 and the second linear connecting rod 5-2 are a first cavity 6-1 and a second cavity 6-2 respectively, the first cavity 6-1 is communicated with a first combustion chamber 1-1 and a first compression chamber 2-1, two ends in the first cavity 6-1 are respectively provided with a first one-way valve 8-1 and a second one-way valve 9-1, the first one-way valve 8-1 in the first cavity only allows compressed gas to flow into the first combustion chamber 1-1 from the first cavity 6-1, and the second one-way valve 9-1 in the first cavity only allows compressed gas to flow into the first cavity 6-1 from the first compression chamber 2-1. The second cavity 6-2 is communicated with a second combustion chamber 1-2 and a second compression chamber 2-2, a first one-way valve 8-2 and a second one-way valve 9-2 are respectively arranged at two ends in the second cavity 6-2, the first one-way valve 8-2 in the second cavity only allows compressed gas to flow into the second combustion chamber 1-2 from the second cavity 6-2, and the second one-way valve 9-2 in the second cavity only allows compressed gas to flow into the second cavity 6-2 from the second compression chamber 2-2.

It should be noted that both ends of the first linear connecting rod 5-1 and the second linear connecting rod 5-2 are provided with touch controllers, and the touch controllers touch the switch of the exhaust mechanism of the combustion chamber to close the switch and touch the touch controllers leading to the combustion chamber to control the first check valve 8-1 in the first cavity and the first check valve 8-2 in the second cavity to supply compressed air to the first combustion chamber 1-1 and the second combustion chamber 1-2; the controllers are not required to be touched in the first compression chamber 2-1 and the second compression chamber 2-2 to control the opening and closing of the second one-way valve 9-1 in the first cavity and the second one-way valve 9-2 in the second cavity to control the opening and closing of the air inlet mechanism, and the one-way valves automatically control the flow of compressed air and prohibit the backflow of the compressed air in the compression chambers by utilizing the compression difference of the compressed air. When the combustion engine works, the first combustion chamber piston 3-1 or the second combustion chamber piston 3-2 runs to the top dead center, the touch controller firstly closes an exhaust valve of the first combustion chamber 1-1 or the second combustion chamber 1-2, then opens the first one-way valve 8-1 in the first cavity or the first one-way valve 8-2 in the second cavity, compressed gas is automatically filled into the first combustion chamber 1-1 or the second combustion chamber 1-2 for combustion, after the combustion starts, the pressure of the first combustion chamber 1-1 or the second combustion chamber 1-2 is suddenly increased, and the first one-way valve 8-1 in the first cavity or the first one-way valve 8-2 in the second cavity automatically prohibits the combustion gas from entering the first cavity 6-1 or the second cavity 6-2 by utilizing the one-way valve characteristic; the first combustion chamber piston 3-1 or the second combustion chamber piston 3-2 moves to a bottom dead center to complete compression, compressed gas in a compression chamber automatically enters the cavity 6-1 or the cavity 6-2 from the compression chamber through a second one-way valve 9-1 in the first cavity or a second one-way valve 9-2 in the second cavity at one end of the central cavity of the connecting rod by utilizing the compression difference between the compressed gas in the compression chamber and the compressed gas stored in the cavity 6-1 or the second cavity 6-2, and after the gas is completely entered, the second one-way valve automatically closes by utilizing the one-way characteristic when the gas is entered into the cavity.

Further, the volume of the first or second compression chamber piston 4-1 or 4-2 is at most 1/4 of the volume of the first or second combustion chamber piston 3-1 or 3-2, and the number of piston rings is reduced accordingly. The utility model adopts combustion pressure separation, the temperature of the first compression chamber 2-1 and the second compression chamber 2-2 is more than four times lower than that of the first combustion chamber 1-1 and the second combustion chamber 1-2, therefore, the compression chamber piston only keeps the volume of one fourth of the combustion chamber piston at most, and the number of piston rings is two at most, thereby lightening the compression chamber piston, reducing the friction force and reducing the power loss.

The utility model also comprises a high-pressure gas starting mechanism which replaces a storage battery for starting, in particular to an externally arranged high-pressure gas cylinder which is used for pushing a combustion chamber piston to do work and start. When the gas-fired engine is started, the high-pressure gas cylinder supplies gas to the first combustion chamber 1-1 to push the first combustion chamber piston 3-1 to move to drive the first compression chamber 2-1 to compress, the second combustion chamber 1-2 exhausts gas, the second compression chamber 2-2 inhales gas, the piston moves to the top dead center, the gear 10 retards, the residual compressed gas in the compression chamber serves as a retardation air cushion, the combustion chamber exhausts gas to make the piston lose power, thereby stopping the operation, namely the compressed gas in the compression chamber, the linkage gear 10 and the exhaust switch jointly act to stop moving, then the high-pressure gas cylinder supplies gas to the second combustion chamber 1-2 to push the second combustion chamber piston 3-2 to move to drive the second compression chamber 2-2 to compress, the first combustion chamber 1-1 exhausts gas, the first compression chamber 2-1 inhales gas until the first cavity 6-1 in the center of the two connecting rods, The high pressure gas start is ended when the compressed gas stored in the second cavity 6-2 reaches the combustion required condition.

As shown in fig. 1, the combustion pressure two-cylinder separation connecting rod straight-going horizontal opposed direct injection internal combustion engine works:

starting: high-pressure gas is filled into the first combustion chamber 1-1 through the high-pressure gas bottle, the working stroke is started, the first linear connecting rod 5-1 moves from left to right, the first compression chamber 2-1 starts to compress, the compressed gas is filled into the first cavity 6-1, the first linear connecting rod 5-1 drives the gear 10 to rotate, the gear 10 drives the second linear connecting rod 5-2 to move from right to left, and therefore the first combustion chamber 1-2 exhausts gas and the second compression chamber 2-2 admits gas. When the piston runs to the top dead center, the linkage gear 10 rotates in a retardation mode, residual compressed gas in the compression chamber serves as a retardation air cushion, the exhaust switch of the combustion chamber is opened and exhausts, so that the piston loses power when running, the running is stopped, high-pressure gas is filled into the second combustion chamber 1-2, the working stroke is started, the second linear connecting rod 5-2 moves from left to right, the second compression chamber 2-2 starts to compress, the compressed gas is filled into the second cavity 6-2, the second linear connecting rod 5-2 drives the gear 10 to rotate, and the gear 10 drives the first linear connecting rod 5-1 to move from right to left. And sequentially filling high-pressure gas into the two combustion chambers for two times or multiple times until the high-temperature high-pressure gas stored in the two cavities reaches the starting combustion standard, so that the high-temperature high-pressure gas can be combusted, and the starting is finished.

And (4) normal operation: the first check valve 8-1 in the first cavity, the first check valve 8-2 in the second cavity, the second check valve 9-1 in the first cavity and the second check valve 9-2 in the second cavity start to work normally, the first check valve 8-1 in the first cavity supplies compressed gas to the first combustion chamber 1-1, the oil pump is started to spray fuel oil into the first combustion chamber 1-1 through the oil nozzle, the fuel oil in the first combustion chamber 1-1 is combusted, the first combustion chamber piston 3-1 starts to do work stroke, the first compression chamber piston 4-1 is compressed, the second check valve 9-1 in the first cavity is automatically opened, and the first cavity 6-1 stores compressed gas. The gear 10 drives the second linear connecting rod 5-2 to move from right to left, the second exhaust mechanism is opened, the second combustion chamber 1-2 exhausts air, and the second compression chamber 2-2 inhales air. When the piston moves to the top dead center, the linkage gear 10 is blocked, the compressed gas remained in the first compression chamber 2-1 serves as a blocking air cushion, the first combustion chamber 1-1 exhausts to enable the piston to run without power, and therefore the running is stopped. And starting secondary combustion, wherein the second check valve 9-1 in the second cavity supplies compressed gas to the second combustion chamber 1-2, the oil supply mechanism supplies fuel oil to the second combustion chamber 1-2, the gas in the second combustion chamber 1-2 is combusted, the second combustion chamber piston 3-2 starts to do work stroke, the second straight connecting rod 5-2 moves from left to right, the second compression chamber piston 4-2 starts to compress, the second check valve 9-2 in the second cavity is automatically opened, and the second cavity 6-2 stores compressed gas. The gear 10 drives the first linear connecting rod 5-1 to move from right to left, the first combustion chamber 1-2 exhaust mechanism is opened, the first combustion chamber 1-1 exhausts, and the first compression chamber 2-1 inhales. When the piston moves to the top dead center, the linkage gear 10 is blocked, the residual compressed gas in the second compression chamber 2-2 acts as a blocking air cushion, and the second combustion chamber 1-2 exhausts to make the piston lose power in operation, thereby stopping movement. The operation is repeated in such a circulating way and continuously works.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various changes, modifications, alterations, and substitutions which may be made by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims (6)

1. The direct-injection internal combustion engine with the two combustion-pressure separated connecting rods in the straight-going horizontal opposition is characterized in that: the cylinder comprises two groups of first cylinder mechanisms and second cylinder mechanisms which are arranged in parallel and have the same structure, wherein each first cylinder mechanism comprises a first combustion chamber (1-1) and a first compression chamber (2-1) which are arranged separately, a first combustion chamber piston (3-1) and a first compression chamber piston (4-1) are respectively arranged in each first combustion chamber (1-1) and each first compression chamber (2-1), and the first combustion chamber piston (3-1) and the first compression chamber piston (4-1) are connected through a first linear connecting rod (5-1); a linkage mechanism is arranged between the first linear connecting rod (5-1) and the second linear connecting rod (5-2), and the linkage mechanism links the first linear connecting rod (5-1) and the second linear connecting rod (5-2) to move in opposite directions; the first combustion chamber (1-1) and the second combustion chamber (1-2) are connected with an air supply mechanism, an exhaust mechanism and an oil supply mechanism, and the first compression chamber (2-1) and the second compression chamber (2-2) are connected with an air inlet mechanism.

2. The direct-injection internal combustion engine with a combustion pressure two-cylinder split link having a straight-ahead horizontal opposition according to claim 1, characterized in that: the linkage mechanism comprises gears (10), and racks meshed with the gears (10) are arranged on the side walls of the two linear connecting rods.

3. The direct-injection internal combustion engine with a combustion pressure two-cylinder split link having a straight-ahead horizontal opposition according to claim 1, characterized in that: the number of the first cylinder body mechanisms is at least two, a group of linkage mechanisms are arranged between every two adjacent groups of the first cylinder body mechanisms, and the linkage mechanisms link the adjacent two first linear connecting rods (5-1) to move in the opposite direction.

4. The direct-injection internal combustion engine with a combustion pressure two-cylinder split link having a straight-ahead horizontal opposition according to claim 1, characterized in that: the gas supply mechanism comprises a first cavity (6-1) axially arranged along the linear connecting rod (5-1), and the first cavity (6-1) is communicated with a first combustion chamber (1-1) and a first compression chamber (2-1).

5. The direct-injection internal combustion engine with a combustion pressure two-cylinder split link having a straight-ahead horizontal opposed, according to claim 4, characterized in that: a first one-way valve (8-1) and a second one-way valve (9-1) are respectively arranged at two ends of the first cavity (6-1), the first one-way valve (8-1) in the first cavity allows gas to flow into the first combustion chamber (1-1) from the first cavity (6-1), and the second one-way valve (9-1) in the first cavity allows gas to flow into the first cavity (6-1) from the first compression chamber (2-1).

6. The direct-injection internal combustion engine with a combustion pressure two-cylinder split link having a straight-ahead horizontal opposition according to claim 1, characterized in that: the volume of the first compression chamber piston (4-1) is 1/4 of the volume of the first combustion chamber piston (3-1), and the number of piston rings on the first compression chamber piston (4-1) is 1/2 of the number of piston rings on the first combustion chamber piston (3-1).

Images