Dual-fuel piston with steel top and aluminum skirt

Abstract

The utility model relates to the technical field of pistons, in particular to a dual-fuel steel top aluminum skirt piston which comprises a piston body and a particle groove, the particle groove is formed in the upper end of the piston body, a ventilation folding channel is formed in the inner side of the piston body, an on-off assembly is installed on the inner side of the ventilation folding channel, a through opening is formed in the inner side of the piston body, and a limiting hole is formed in the inner side of the piston body. A limiting hole is formed in the piston body, a first silicon rubber sealing ring is fixedly connected to the inner side of the limiting hole, a movable groove is formed in the inner side of the piston body, a first magnetic plate is fixedly connected to the upper end of the movable groove, the on-off assembly comprises a gravity metal block, a second silicon rubber sealing ring is fixedly connected to the bottom end of the gravity metal block, and a hollow sliding column is fixedly connected to the bottom end of the gravity metal block. According to the device, an air duct can be formed in the piston by utilizing the force of the reciprocating motion of the piston in an inertia mode, so that the effect of continuously removing carbon particles is achieved, meanwhile, the power stroke of the piston is not influenced, and the service life of the piston is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of pistons, in particular to a dual-fuel steel-top aluminum-skirt piston. Background Art

[0002] Dual fuel steel top aluminum skirt piston is a piston for internal combustion engines, especially designed for engines capable of running on two different fuels, such as diesel and natural gas, this piston is designed to provide better performance and adaptability to meet the special requirements of dual fuel engines.

[0003] Diesel combustion produces carbon particles, which are easy to adhere to the piston. After a long period of accumulation, the piston movement stroke will become shorter, causing the engine connecting rod to bend or break. Under extreme conditions, the broken connecting rod will fly out and penetrate the cylinder body, affecting the use. Therefore, a dual-fuel steel-top aluminum skirt piston is proposed to address the above problem. Utility Model Content

[0004] The utility model aims to provide a dual-fuel steel-top aluminum-skirt piston to solve the problem that diesel combustion produces carbon particles, which are easy to adhere to the piston. After a long period of accumulation, the piston movement stroke will become shorter, thereby causing the engine connecting rod to bend or break. Under extreme conditions, the broken connecting rod will fly out and penetrate the cylinder body, affecting the use.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A dual-fuel steel-top aluminum-skirt piston comprises a piston body and a particle groove, wherein the particle groove is provided at the upper end of the piston body, a ventilation fold is provided inside the piston body, a switch assembly is installed inside the ventilation fold, a through-port is provided inside the piston body, a limiting hole is provided inside the piston body, a first silicone rubber sealing ring is fixedly connected to the inside of the limiting hole, a movable groove is provided inside the piston body, a first magnetic plate is fixedly connected to the upper end of the movable groove, the switch assembly comprises a gravity metal block, a second silicone rubber sealing ring is fixedly connected to the bottom end of the gravity metal block, a hollow sliding column is fixedly connected to the bottom end of the hollow sliding column, a fixed spring plate is fixedly connected to the outside of the fixed spring plate, a hollow magnetic block is fixedly connected to the outside of the fixed spring plate, a spring is fixedly connected to the top of the fixed spring plate, and a through hole is provided inside the hollow sliding column.

[0007] As a further optimization of the present invention, the particle groove is connected to the through-port, the particle groove is annularly arranged inside the piston body, and the outer edge and the inner edge of the particle groove are both arc structures.

[0008] As a further optimization of the present invention, the through-port is in the shape of a cylinder, is opened through the upper end of the piston body, is connected with the through-port, the limiting hole, the movable groove and the vent, and has a diameter greater than that of the limiting hole.

[0009] As a further optimization of the present invention, the first silicone rubber sealing ring is fixed at the upper and lower ends of the limiting hole, the inner side of the first silicone rubber sealing ring is fitted with the outer side of the hollow sliding column, the first silicone rubber sealing ring is fixed at the upper end of the ventilation fold, and the lower end of the ventilation fold passes through the inner side of the piston body, the first magnetic plate is in the shape of a cylinder, and the first magnetic plate and the hollow magnetic block magnetically repel each other.

[0010] As a further optimization of the present invention, the outer side of the gravity metal block slides on the inner side of the through-hole, the bottom end of the second silicone rubber sealing ring fits with the bottom end of the through-hole, the shape of the gravity metal block is a cylinder, the number of the on-off components is several, and the on-off components correspond one-to-one to the ventilation folds.

[0011] As a further optimization of the present invention, the shape of the hollow sliding column is a hollow cylinder, the through hole is connected to the impurity inlet, the impurity inlet is opened at the upper end of the hollow sliding column, the number of the impurity inlet is several, and the upper end of the spring is fixedly connected to the bottom end of the first magnetic plate.

[0012] As a further optimization of the present invention, the shapes of the spring plate and the hollow magnetic block are both hollow cylinders, the outer side of the hollow sliding column fits with the inner side of the first silicone rubber sealing ring inside the ventilation fold, and the through hole is connected to the inside of the ventilation fold.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] In the utility model, by providing the ventilation fold, the on-off assembly, the through-port, the limiting hole, the first silicone rubber sealing ring, the first magnetic plate and the movable groove, the device can utilize the force of the repeated movement of the piston to form an ventilation duct inside the piston by inertia, thereby achieving the effect of continuously removing carbon particles without affecting the power stroke of the piston, thereby ensuring the service life of the piston. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the ventilation fold structure of the utility model;

[0017] Figure 3 For this utility model Figure 2 A schematic diagram of the structure at A;

[0018] Figure 4 This is a schematic diagram of the particle tank structure of the utility model;

[0019] Figure 5 For this utility model Figure 4 Schematic diagram of the structure at B;

[0020] Figure 6 This is a schematic diagram of the structure of the switch component of the utility model.

[0021] In the figure: 1. piston body; 2. particle groove; 3. ventilation fold; 4. on-off assembly; 41. gravity metal block; 42. second silicone rubber sealing ring; 43. hollow sliding column; 44. fixed spring plate; 45. hollow magnetic block; 46. spring; 47. through hole; 48. inlet; 5. through opening; 6. limit hole; 7. first silicone rubber sealing ring; 8. first magnetic plate; 9. movable groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] See also Figure 1-6 , the utility model provides a technical solution:

[0025] A dual-fuel steel-top aluminum-skirt piston comprises a piston body 1 and a particle groove 2. The particle groove 2 is provided at the upper end of the piston body 1, a ventilation fold 3 is provided inside the piston body 1, a switch assembly 4 is installed inside the ventilation fold 3, a through-hole 5 is provided inside the piston body 1, a limiting hole 6 is provided inside the piston body 1, a first silicone rubber sealing ring 7 is fixedly connected inside the limiting hole 6, a movable groove 9 is provided inside the piston body 1, a first magnetic plate 8 is fixedly connected to the upper end of the movable groove 9, the switch assembly 4 comprises a gravity metal block 41, a second silicone rubber sealing ring 42 is fixedly connected to the bottom end of the gravity metal block 41, a hollow sliding column 43 is fixedly connected to the bottom end of the gravity metal block 41, a fixed spring plate 44 is fixedly connected to the outside of the hollow sliding column 43, a hollow magnetic block 45 is fixedly connected to the outside of the fixed spring plate 44, a spring 46 is fixedly connected to the top of the fixed spring plate 44, and a through hole 47 is provided inside the hollow sliding column 43.

[0026] As a further implementation of this solution, the particle groove 2 is connected to the through-hole 5, the particle groove 2 is annularly arranged inside the piston body 1, and the outer edge and the inner edge of the particle groove 2 are both arc structures, which facilitates the carbon particles inside the particle groove 2 to enter the through-hole 5;

[0027] As a further implementation of the present invention, the through-port 5 is in the shape of a cylinder, and the through-port 5 is opened through the upper end of the piston body 1. The through-port 5, the limiting hole 6, the movable groove 9 and the vent fold 3 are connected, and the diameter of the through-port 5 is larger than the diameter of the limiting hole 6, so that the gravity metal block 41 and the hollow slide column 43 can slide inside the through-port 5 and the limiting hole 6, so as to limit the movement of the on-off assembly 4.

[0028] As a further implementation of this solution, the first silicone rubber sealing ring 7 is fixed at the upper and lower ends of the limiting hole 6, the inner side of the first silicone rubber sealing ring 7 is fitted with the outer side of the hollow sliding column 43, the first silicone rubber sealing ring 7 is fixed at the upper end of the ventilation fold 3, and the lower end of the ventilation fold 3 passes through the inner side of the piston body 1. The first magnetic plate 8 is in the shape of a cylinder, and the first magnetic plate 8 and the hollow magnetic block 45 are magnetically repelled, which plays a role in sealing the on-off component 4 to prevent impurities from entering the interior of the active groove 9;

[0029] As a further implementation of this solution, the outer side of the gravity metal block 41 slides inside the through-hole 5, the bottom end of the second silicone rubber sealing ring 42 fits with the bottom end of the through-hole 5, the gravity metal block 41 is in the shape of a cylinder, the number of the on-off components 4 is several, and the on-off components 4 correspond to the ventilation folds 3 one by one, which can improve the efficiency of cleaning impurities inside the particle tank 2;

[0030] As a further implementation of the present invention, the hollow slide column 43 is in the shape of a hollow cylinder, the through hole 47 is connected to the impurity inlet 48, the impurity inlet 48 is opened at the upper end of the hollow slide column 43, the number of impurity inlet 48 is several, the upper end of the spring 46 is fixedly connected to the bottom end of the first magnetic plate 8, so that an airway is formed inside the piston to facilitate the discharge of impurities;

[0031] As a further implementation scheme of the present scheme, the spring plate 44 and the hollow magnetic block 45 are both in the shape of hollow cylinders, the outer side of the hollow sliding column 43 fits with the inner side of the first silicone rubber sealing ring 7 inside the ventilation duct 3, and the through hole 47 is connected with the inside of the ventilation duct 3, so that the through port 5 can be easily sealed by the on-off assembly 4 without affecting the work of the piston.

[0032] Working process: During the use of the device, when the piston body 1 is in a compression stroke, under the pulling force of the spring 46 and the magnetic repulsion between the hollow magnetic block 45 and the first magnetic plate 8, the gravity metal block 41 is inside the through-hole 5, and the second silicone rubber sealing ring 42 seals the gravity metal block 41 and the piston body 1, which does not affect the compression stroke of the piston body 1. When the piston body 1 moves relative to the above-mentioned direction, under the action of inertia, the gravity metal block 41 slides out of the through-hole 5, and the gravity metal block 41 drives the hollow sliding column 43 to move. The hollow sliding column 43 slides on the inner side of the limiting hole 6 and the ventilation fold 3. At the same time, the outer side of the hollow sliding column 43 fits with the inner side of multiple first silicone rubber sealing rings 7, which can prevent impurities from entering the movable groove 9. When the hollow sliding column 43 moves, it drives the solid The spring plate 44 and the hollow magnetic block 45 move, and the fixed spring plate 44 squeezes the spring 46, and the spring 46 plays the role of resetting the fixed spring plate 44. The inertial force can overcome the elastic force of the spring 46, the magnetic repulsion between the hollow magnetic block 45 and the first magnetic plate 8, and the friction between the hollow sliding column 43 and the first silicone rubber sealing ring 7. After the gravity metal block 41 moves, the gravity metal block 41 moves out of the through-port 5, and the carbon particles in the particle groove 2 enter the through hole 47 from the inlet 48, and enter the ventilation channel 3 from the through hole 47, and then are eliminated from the ventilation channel 3, thereby achieving the effect of cleaning the carbon particles. The elastic force of the spring 46 and the magnetic repulsion between the fixed spring plate 44 and the first magnetic plate 8 can quickly block the through-port 5, so as not to affect the gas and oil flushing into the cylinder, thereby ensuring the service life of the piston.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-fuel steel-top aluminum-skirt piston, comprising a piston body (1) and a particle groove (2), characterized in that: The piston body (1) has a particle groove (2) at the upper end, a ventilation fold (3) at the inner side of the piston body (1), an on-off assembly (4) is installed at the inner side of the ventilation fold (3), a through opening (5) at the inner side of the piston body (1), a limiting hole (6) at the inner side of the piston body (1), a first silicone rubber sealing ring (7) fixedly connected to the inner side of the limiting hole (6), a movable groove (9) at the inner side of the piston body (1), and a first magnetic plate ( 8), the switch assembly (4) comprises a gravity metal block (41), the bottom end of the gravity metal block (41) is fixedly connected to a second silicone rubber sealing ring (42), the bottom end of the gravity metal block (41) is fixedly connected to a hollow sliding column (43), the outer side of the hollow sliding column (43) is fixedly connected to a spring plate (44), the outer side of the spring plate (44) is fixedly connected to a hollow magnetic block (45), the top end of the spring plate (44) is fixedly connected to a spring (46), and the inner side of the hollow sliding column (43) is provided with a through hole (47).

2. A dual fuel steel top aluminum skirt piston according to claim 1, characterized in that: The particle groove (2) is communicated with the through-port (5); the particle groove (2) is annularly arranged inside the piston body (1); and both the outer edge and the inner edge of the particle groove (2) are of arc structure.

3. The dual fuel steel top aluminum skirt piston according to claim 1, characterized in that: The through opening (5) is in the shape of a cylinder. The through opening (5) is formed through the upper end of the piston body (1). The through opening (5), the limiting hole (6), the movable groove (9) and the ventilation fold (3) are connected. The diameter of the through opening (5) is greater than the diameter of the limiting hole (6).

4. The dual fuel steel top aluminum skirt piston according to claim 1, characterized in that: The first silicone rubber sealing ring (7) is fixed at the upper and lower ends of the limiting hole (6), the inner side of the first silicone rubber sealing ring (7) is in contact with the outer side of the hollow sliding column (43), the first silicone rubber sealing ring (7) is fixed at the upper end of the ventilation fold (3), and the lower end of the ventilation fold (3) passes through the inner side of the piston body (1), the first magnetic plate (8) is in the shape of a cylinder, and the first magnetic plate (8) and the hollow magnetic block (45) are magnetically repelled.

5. The dual fuel steel top aluminum skirt piston according to claim 1, characterized in that: The outer side of the gravity metal block (41) slides on the inner side of the through-hole (5), and the bottom end of the second silicone rubber sealing ring (42) fits with the bottom end of the through-hole (5). The gravity metal block (41) is in the shape of a cylinder. There are a plurality of on-off components (4), and the on-off components (4) correspond one to one with the ventilation folds (3).

6. The dual fuel steel top aluminum skirt piston according to claim 1, characterized in that: The hollow slide column (43) is in the shape of a hollow cylinder. The through hole (47) is in communication with a foreign matter inlet (48). The foreign matter inlet (48) is provided at the upper end of the hollow slide column (43). There are a plurality of foreign matter inlet (48). The upper end of the spring (46) is fixedly connected to the bottom end of the first magnetic plate (8).

7. The dual fuel steel top aluminum skirt piston according to claim 1, characterized in that: The spring plate (44) and the hollow magnetic block (45) are both in the shape of hollow cylinders, the outer side of the hollow sliding column (43) is in contact with the inner side of the first silicone rubber sealing ring (7) inside the ventilation fold (3), and the through hole (47) is connected to the interior of the ventilation fold (3).

Images