CN221169743U - Double S type horizontal opposed gasoline and diesel engine - Google Patents

Abstract

A double S-shaped horizontal opposed gasoline and diesel engine comprises a cylinder body, wherein an upper cylinder and a lower cylinder are arranged on the cylinder body, each cylinder is symmetrically arranged on two sides of the cylinder body, and a pair of upper pistons and a pair of lower pistons are respectively arranged in the upper cylinder and the lower cylinder; the cylinder body is provided with a gas distribution mechanism between the upper group of cylinder barrels and the lower group of cylinder barrels; the middle part of the cylinder body is provided with a crankshaft, two eccentric sections of the crankshaft are respectively connected with an upper piston and a lower piston which are positioned at two sides in the two groups of cylinder barrels through two connecting rod assemblies, and the connecting rod assemblies are formed by hinging an L-shaped connecting rod and a straight connecting rod; the front side and the rear side of the cylinder body are respectively provided with a transmission mechanism, and the intake valve and the exhaust valve of the gas distribution mechanism positioned at the front side and the rear side of the cylinder body are respectively connected with the crankshaft through the transmission mechanisms in a transmission way. The engine can increase the output power, and has the advantages of relatively simple overall structure, light weight, small volume and stable operation; the cylinder cover structure of the body distribution mechanism can be simplified, and the manufacturing cost is low.

Description

Double S type horizontal opposed gasoline and diesel engine

Technical Field

The utility model belongs to an engine, and particularly relates to a double-S-shaped horizontally opposed gasoline and diesel engine.

Background

At present, the structure of an automobile engine mainly comprises a reciprocating piston engine, and the reciprocating piston engine mainly comprises two in-line and V-shaped structures, wherein each structure is divided into two strokes and four strokes, and the four strokes are mainly used.

The existing four-stroke engine with an in-line structure and a V-shaped structure is complex in structure and mainly comprises a cylinder body, a crank connecting rod mechanism, a gas distribution mechanism, an oil supply system, an ignition system, a cooling system, a lubricating system and a starting system, wherein the gas distribution mechanism comprises a cylinder cover, and a valve, a valve spring and a cam shaft which are arranged on the cylinder cover; in addition, the crankshaft of the existing four-stroke engine can complete four working strokes of air intake, compression, work doing and exhaust only by rotating for two weeks, and the power can be output to the outside only in the working strokes, so that the output power is low.

Disclosure of utility model

The utility model aims to solve the technical problem of providing a double-S-shaped horizontal opposite gasoline and diesel engine with high output power.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

A double S-shaped horizontal opposed gasoline and diesel engine comprises a cylinder body, wherein an upper cylinder and a lower cylinder are arranged on the cylinder body, each cylinder is symmetrically arranged on two sides of the cylinder body, and a pair of upper pistons and a pair of lower pistons are respectively arranged in the upper cylinder and the lower cylinder; the cylinder body is provided with a gas distribution mechanism between the upper cylinder barrel and the lower cylinder barrel and at the outer sides of the two cylinder barrels, and the gas distribution mechanism comprises two inlet valves and two exhaust valves which are uniformly distributed on the circumference; the included angle between the axes of the intake valve and the exhaust valve and the horizontal line is 45 degrees;

The middle part in the cylinder body is rotatably provided with a crankshaft, two eccentric sections of the crankshaft are respectively connected with an upper piston and a lower piston which are positioned at two sides in the two groups of cylinders through two connecting rod assemblies, the connecting rod assemblies are formed by hinging an L-shaped connecting rod and a straight connecting rod, the inner ends of the L-shaped connecting rods are hinged with the corresponding upper pistons or lower pistons, and one ends of the straight connecting rods are hinged with the corresponding eccentric sections of the crankshaft;

The front side and the rear side of the cylinder body are respectively provided with a transmission mechanism above and below the crankshaft, and the intake valve and the exhaust valve of the gas distribution mechanism which are positioned at the front side and the rear side of the cylinder body are respectively connected with the crankshaft through transmission mechanisms in a transmission way and are used for controlling the gas to enter and exit.

Preferably, the cylinder body is formed by connecting two parts of the machine body which are bilaterally symmetrical in a butt joint mode through a plurality of long screws and nuts arranged on the periphery of the machine body.

Preferably, the outer edges of the two ends of the upper piston and the lower piston are respectively sleeved with a sealing ring, one end of the corresponding L-shaped connecting rod is provided with an end cover, and the inner end of the L-shaped connecting rod passes through the end cover in a clearance fit manner and is hinged with the upper piston or the lower piston through a pin shaft.

Preferably, the gas distribution mechanism comprises a cylinder cover, two air inlet channels and two air outlet channels are uniformly distributed on the cylinder cover along the circumferential direction, the air inlet channels and the air outlet channels are alternately arranged, the air inlet valves and the air outlet valves are respectively inserted in the air inlet channels and the air outlet channels, and valve springs are respectively sleeved at the outer ends of the air inlet valves and the air outlet valves and used for realizing automatic resetting of the air inlet valves and the air outlet valves.

Preferably, each transmission mechanism comprises two camshafts, the two camshafts are arranged on the cylinder body in a vertical and horizontal mode, and cams are respectively arranged on each camshaft corresponding to the outer ends of each intake valve and each exhaust valve and used for controlling the opening and closing of the corresponding intake valve and exhaust valve; the middle parts of the two camshafts are in transmission connection with the crankshafts through a gear transmission mechanism and a universal joint transmission mechanism which are sequentially connected, and the transmission connection between the crankshafts and the camshafts is realized, and the transmission ratio is 2:1.

The beneficial effects of the utility model are as follows:

1. Because two eccentric sections of the crankshaft are respectively connected with an upper piston and a lower piston which are positioned at two sides in the two groups of cylinders through two connecting rod assemblies, the two lower pistons are driven to move along with the rotation of the crankshaft, and simultaneously the two upper pistons are driven to synchronously move, and the working process of the upper pistons and the lower pistons are crossed and are 180 degrees different in phase angle, when the crankshaft rotates for 720 degrees, the upper and lower groups of pistons can be driven to complete the secondary working process, and therefore the output power can be increased.

2. The double-S-shaped horizontally opposed gasoline-diesel engine has the advantages of lower gravity center, relatively simple overall structure, light weight, small volume and stable operation; the cylinder cover structure of the body distribution mechanism can be simplified, and the manufacturing cost is low.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

Fig. 2 is a cross-sectional view A-A of fig. 1.

FIG. 3 is a schematic illustration of the connection of one end of a straight connecting rod to an eccentric section of a crankshaft.

FIG. 4 is a schematic illustration of the connection of the inner end of the L-shaped connecting rod to the corresponding upper or lower piston.

In the figure: the cylinder body 1, the crankshaft 2, the connecting rod assembly 3, the L-shaped connecting rod 301, the straight connecting rod 302, the outer end cover 4, the cam shaft 5, the upper piston 6, the cylinder cover 7, the lower piston 8, the cylinder barrel 9, the connecting plate 10, the exhaust valve 11, the intake valve 12, the valve spring 13, the cam 14, the intermediate shaft 15, the bevel gear pair 16, the straight gear pair 17, the transmission shaft 18, the pinion shaft 19, the long screw rod 20, the bevel gear pair 21, the universal joint 22, the split collet 23, the arc-shaped long hole 231, the end cover 24 and the oil nozzle 25.

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

As shown in fig. 1-4, the utility model relates to a double-S-type horizontally opposed gasoline and diesel engine, which comprises a cylinder body 1, wherein the cylinder body 1 is formed by butt joint of two symmetrical engine bodies and then connection of the two symmetrical engine bodies through a plurality of long screws 20 and nuts on the periphery of the engine bodies, connecting plates 10 are respectively arranged at the upper end and the lower end of the cylinder body 1, and the two engine bodies are respectively fixed on the connecting plates 10 through bolts and are used for improving the connection strength of the cylinder body 1. An upper cylinder barrel 9 and a lower cylinder barrel 9 are arranged on the cylinder body 1, each cylinder barrel 9 is two and symmetrically arranged and inserted at two sides of the cylinder body 1, and a pair of upper pistons 6 and a pair of lower pistons 8 which are symmetrically arranged are respectively arranged on the upper cylinder barrel 9 and the lower cylinder barrel 9; gas distribution mechanisms are respectively arranged on the cylinder body 1 between the upper group of cylinder barrels 9 and the lower group of cylinder barrels 9 and outside the two groups of cylinder barrels 9.

The middle part in the cylinder body 1 is rotatably provided with a crankshaft 2, the crankshaft 2 is provided with two eccentric sections 201 which are symmetrical with respect to the central line, each eccentric section is respectively connected with an upper piston 6 and a lower piston 8 which are positioned at two sides in the two groups of cylinder barrels 9 through two connecting rod assemblies 3, each connecting rod assembly 3 is formed by hinging an L-shaped connecting rod 301 and a straight connecting rod 302 through a pin shaft, the inner end of the L-shaped connecting rod 301 is inserted into the corresponding cylinder barrel 9 and hinged with the corresponding upper piston 6 or lower piston 8 through the pin shaft, one end of the straight connecting rod 302 is hinged with the corresponding eccentric section of the crankshaft 2 through a split jacket 23, the two split jackets 23 on each eccentric section of the crankshaft 2 are mutually nested, and an arc-shaped long hole 231 is arranged on the split jacket 23 on the outer layer and used for penetrating the straight connecting rod connected with the split jacket on the inner layer. Sealing rings are respectively sleeved on the outer edges of the two ends of the upper piston 6 and the lower piston 8, an end cover 24 is connected to one end of a corresponding L-shaped connecting rod 301 through threads, and the inner end of the L-shaped connecting rod 301 passes through the end cover 24 in a clearance fit manner and is hinged with the upper piston 6 or the lower piston 8 through a pin shaft. The split jacket 23 is formed by mutually inserting and buckling two jackets and connecting the jackets through pins so as to facilitate installation.

The gas distribution mechanism comprises a cylinder cover 7, two air inlet channels 701 and two air outlet channels 702 are uniformly distributed on the cylinder cover 7 along the circumferential direction, the air inlet channels and the air outlet channels are alternately arranged, an air inlet valve 12 and an air outlet valve 11 are respectively inserted into the air inlet channels 701 and the air outlet channels 702, and the included angle between the axes of the air inlet valve 12 and the air outlet valve 11 and the horizontal line is 45 degrees; valve springs 13 are respectively sleeved at the outer ends of the intake valve 12 and the exhaust valve 11 and are used for realizing automatic resetting of the intake valve 12 and the exhaust valve 11. Four lugs 703 are uniformly distributed on the circumference of the outer edge of the cylinder cover 7, and the cylinder cover 7 is fixedly connected with the cylinder body 1 through the lugs 703 and the long screw 20; the outer ends of the cylinder covers 7 positioned at the two sides of the cylinder body 1 are connected with outer end covers 4 in a sealing way, and the L-shaped connecting rods 301 respectively penetrate through the corresponding outer end covers 4 and are provided with sliding seals between the two. An injection nozzle 25 for injecting fuel is fixedly inserted into the outer wall of the cylinder head 7.

The front side and the back side of the cylinder body 1 are respectively provided with a transmission mechanism above and below the crankshaft 2, and an inlet valve 12 and an exhaust valve 11 of the gas distribution mechanism, which are respectively arranged on the front side and the back side of the cylinder body 1, are respectively connected with the crankshaft 2 in a transmission way through the transmission mechanisms and are used for controlling the inlet and the outlet of gas through the rotation of the crankshaft 2.

Each transmission mechanism comprises two cam shafts 5, the two cam shafts 5 are horizontally arranged up and down and rotatably inserted on connecting ribs at the periphery of the cylinder body 1, a cam 14 is respectively fixed at the outer end of each cam shaft 5 corresponding to each intake valve 12 and exhaust valve 11, and the cam 14 is pressed at the outer end of the corresponding intake valve 12 or exhaust valve 11 and is used for controlling the opening and closing of the corresponding intake valve 12 and exhaust valve 11; the middle parts of the two camshafts 5 are in transmission connection with the crankshaft 2 through a gear transmission mechanism and a universal joint transmission mechanism which are sequentially connected, and the transmission connection between the crankshaft 2 and the camshafts 5 is realized, and the transmission ratio is 2:1.

The gear transmission mechanism comprises a shaft 15 and a transmission shaft 18 which are respectively and rotatably arranged on the cylinder body 1 along the vertical direction, the shaft 15 corresponds to the axis of the crankshaft 2, the inner end of the shaft 15 is in transmission connection with the crankshaft 2 through a bevel gear pair 16, the outer end of the shaft 15 is in transmission connection with the transmission shaft 18 through a spur gear pair 17, and the transmission shaft 18 is arranged on the cylinder body 1 through a boss 101 arranged on the cylinder body 1 and is positioned outside two camshafts 5 of each transmission mechanism. The universal joint transmission mechanism comprises a pinion shaft 19 arranged at two ends of each transmission shaft 18, the pinion shaft 19 is rotatably arranged on the cylinder body 1 through a support arm 102 arranged on the cylinder body 1 and is obliquely arranged, one end of the pinion shaft 19 is in transmission connection with the corresponding end of the transmission shaft 18 through a universal joint 22, the other end of the pinion shaft 19 is in transmission connection with the corresponding camshaft 5 through a bevel gear pair 21, and the alternative opening and closing of the intake valve 12 and the exhaust valve 11 are realized.

During operation, the process is as follows:

1. When the engine is started, the crankshaft 2 is driven by the automobile starter to rotate clockwise, when the crankshaft 2 rotates clockwise, the two upper pistons 6 are simultaneously driven by the two groups of connecting rod assemblies 3 to move in opposite directions from an outer dead center, the two lower pistons 8 are simultaneously driven by the other two connecting rod assemblies 3 to move in opposite directions from an inner dead center, when the two lower pistons 8 move in opposite directions, the two intake valves 12 on the cylinder cover 7 between the two lower pistons 8 are opened, the exhaust valves 11 are closed, and meanwhile, the two intake valves 12 on the cylinder cover 7 at the outer ends of the two lower pistons 8 are closed, and the exhaust valves 11 are opened, so that air intake between the two lower pistons 8 is realized; when the crankshaft 2 rotates 180 clockwise, the two lower pistons 8 reversely move to the outer dead points to finish the suction stroke;

2. Along with the continuous rotation of the crankshaft 2, the two lower pistons 8 are driven to move in opposite directions by the two connecting rod assemblies 3, at the moment, two intake valves 12 and exhaust valves 11 on the cylinder cover 7 between the two lower pistons 8 are closed, and compression after air intake of the two lower pistons 8 is realized; when the crankshaft 2 rotates clockwise 360, the two lower pistons 8 move to the inner dead points in opposite directions, and the compression stroke is completed;

3. When the two lower pistons 8 move to the inner dead points in opposite directions, fuel is injected between the two lower pistons 8 through the fuel injection nozzle 25 to be compression-ignited, high-temperature and high-pressure gas is generated to push the two lower pistons 8 to move in opposite directions, and the crankshaft 2 is driven to rotate through the two connecting rod assemblies to realize work;

4. When the two lower pistons 8 reversely move to be close to the outer dead point, the two exhaust valves 11 on the cylinder cover 7 between the two lower pistons 8 are opened, and the two lower pistons 8 are driven to move to the outer dead point to start to move in opposite directions along with the continued rotation of the crankshaft 2, and exhaust gas is discharged through the opened exhaust valves 11, so that an exhaust stroke is completed. After the exhaust, the two exhaust valves 11 on the cylinder head 7 between the two lower pistons 8 are closed, and the crankshaft is rotated 720 degrees.

Because the crankshaft 2 is respectively connected with the upper piston 6 and the lower piston 8 through the two connecting rod assemblies, along with the rotation of the crankshaft, the two lower pistons 8 are driven to move and simultaneously drive the two upper pistons 6 to synchronously move, so that the working process of the upper pistons 6 and the lower pistons 8 are crossed and are 180-degree phase angle different, and when the crankshaft rotates 720 degrees, the upper and lower groups of pistons can be driven to complete the secondary working process, and the output power can be increased.

In the working process, when the two lower pistons 8 start to reversely move to enter an air suction stroke, two air inlet valves 12 on the cylinder covers 7 at the outer sides of the two lower pistons 8 are closed, and an air outlet valve 11 is opened, so that the inner cavities of cylinder barrels at the outer sides of the two lower pistons 8 enter an air discharge stroke;

when the two lower pistons 8 start to move oppositely to enter a compression stroke, two intake valves 12 on the cylinder covers 7 at the outer sides of the two lower pistons 8 are opened, and an exhaust valve 11 is closed, so that the inner cavities of cylinder barrels at the outer sides of the two lower pistons 8 enter an air suction stroke;

When the two lower pistons 8 start to reversely move to enter the working stroke, the two intake valves 12 and the exhaust valves 11 on the cylinder covers 7 at the outer sides of the two lower pistons 8 are closed at the same time, so that the inner cavities of the cylinder barrels at the outer sides of the two lower pistons 8 enter the compression stroke;

When the two lower pistons 8 move reversely to the outer dead point to prepare for entering an exhaust stroke, fuel is injected into cylinder barrels outside the two lower pistons 8 through the fuel injection nozzles 25 to be compression-ignited, high-temperature high-pressure gas is generated to push the two lower pistons 8 to move in opposite directions, so that the two lower pistons 8 do work while entering the exhaust stroke, and the crankshaft is driven to rotate through the two connecting rod assemblies again to achieve work;

Therefore, when the crankshaft drives the two lower pistons 8 to complete a working cycle between the two cylinders through the two connecting rod assemblies, the cylinders outside the two lower pistons 8 simultaneously complete the process from exhaust to work under the action of the intake valve 12 and the exhaust valve 11 on the cylinder cover 7 outside the two lower pistons 8, so that the output power is further increased.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (5)

1. A double S-shaped horizontal opposed gasoline and diesel engine comprises a cylinder body and is characterized in that: an upper cylinder and a lower cylinder are arranged on the cylinder body, each cylinder is symmetrically arranged at two sides of the cylinder body, and a pair of upper pistons and a pair of lower pistons are respectively arranged in the upper cylinder and the lower cylinder; the cylinder body is provided with a gas distribution mechanism between the upper cylinder barrel and the lower cylinder barrel and at the outer sides of the two cylinder barrels, and the gas distribution mechanism comprises two inlet valves and two exhaust valves which are uniformly distributed on the circumference; the included angle between the axes of the intake valve and the exhaust valve and the horizontal line is 45 degrees;

The middle part in the cylinder body is rotatably provided with a crankshaft, two eccentric sections of the crankshaft are respectively connected with an upper piston and a lower piston which are positioned at two sides in the two groups of cylinders through two connecting rod assemblies, the connecting rod assemblies are formed by hinging an L-shaped connecting rod and a straight connecting rod, the inner ends of the L-shaped connecting rods are hinged with the corresponding upper pistons or lower pistons, and one ends of the straight connecting rods are hinged with the corresponding eccentric sections of the crankshaft;

The front side and the rear side of the cylinder body are respectively provided with a transmission mechanism above and below the crankshaft, and the intake valve and the exhaust valve of the gas distribution mechanism which are positioned at the front side and the rear side of the cylinder body are respectively connected with the crankshaft through transmission mechanisms in a transmission way and are used for controlling the gas to enter and exit.

2. The dual S-type horizontally opposed gasoline and diesel engine of claim 1, characterized by: the cylinder body is formed by connecting two parts of the machine body which are bilaterally symmetrical in a butt joint mode through a plurality of long screws and nuts arranged on the periphery of the machine body.

3. The dual S-type horizontally opposed gasoline and diesel engine of claim 1, characterized by: the outer edges of the two ends of the upper piston and the lower piston are respectively sleeved with a sealing ring, an end cover is arranged at one end of the corresponding L-shaped connecting rod, and the inner end of the L-shaped connecting rod passes through the end cover in a clearance fit manner and is hinged with the upper piston or the lower piston through a pin shaft.

4. The dual S-type horizontally opposed gasoline and diesel engine of claim 1, characterized by: the gas distribution mechanism comprises a cylinder cover, two air inlet channels and two air outlet channels are uniformly distributed on the cylinder cover along the circumferential direction, the air inlet channels and the air outlet channels are alternately arranged, the air inlet valves and the air outlet valves are respectively inserted in the air inlet channels and the air outlet channels, and valve springs are respectively sleeved at the outer ends of the air inlet valves and the air outlet valves and used for realizing automatic resetting of the air inlet valves and the air outlet valves.

5. The dual S-type horizontally opposed gasoline and diesel engine of claim 1 or 4, characterized by:

Each transmission mechanism comprises two camshafts which are arranged on the cylinder body in an up-down horizontal mode, and cams are arranged on each camshaft corresponding to the outer ends of each intake valve and each exhaust valve and used for controlling the opening and closing of the corresponding intake valve and exhaust valve; the middle parts of the two camshafts are in transmission connection with the crankshafts through a gear transmission mechanism and a universal joint transmission mechanism which are sequentially connected, and the transmission connection between the crankshafts and the camshafts is realized, and the transmission ratio is 2:1.