Enhanced diesel engine aluminum alloy piston capable of bearing high detonation pressure

Abstract

The invention discloses a high detonation pressure bearing enhanced diesel engine aluminum alloy piston which comprises a device body, the device body comprises a piston body and an embedded part device, the embedded part device is pre-cast in the piston body, the piston body is of a cylindrical structure, and the interior and the bottom of the piston body are of a through structure; the embedded part device comprises a main support disc, a first supporting block and a second supporting block, the main support disc, the first supporting block and the second supporting block are of a smooth transition and integrated machining forming structure, the first supporting block is located at the left end of the bottom of the main support disc, and the second supporting block is located at the right end of the bottom of the main support disc. The enhanced diesel engine aluminum alloy piston capable of bearing the high detonation pressure has the capacity of bearing the high detonation pressure, and compared with a traditional steel piston, the cost is lower, and the enhanced diesel engine aluminum alloy piston is suitable for being widely applied to diesel engines. And through the innovative design of the embedded part, the use limitation of the aluminum alloy piston in a high-pressure environment is solved.

Description

Technical Field

[0001] The invention relates to the technical field of internal combustion engine pistons, in particular to a reinforced diesel engine aluminum alloy piston capable of withstanding high explosion pressure. Background Art

[0002] The engine piston is a key component of the engine and plays an extremely important role when the engine is working. The engine piston is used to withstand gas pressure and drive the crankshaft to rotate through the piston pin. There is a combustion chamber on the top of the piston. The general engine piston is divided into three categories: diesel engine piston, gasoline engine piston, and universal piston.

[0003] Existing aluminum alloy pistons for diesel engines have the following defects:

[0004] Due to material limitations, traditional diesel engine aluminum alloy pistons can usually only withstand a maximum explosion pressure of about 200 bar. Although steel pistons can withstand explosion pressures of up to 300 bar or even higher, they are not suitable for all application scenarios due to their high cost. Therefore, a solution is needed. Summary of the invention

[0005] The object of the present invention is to provide a reinforced diesel engine aluminum alloy piston capable of withstanding high explosion pressure, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A reinforced diesel engine aluminum alloy piston capable of withstanding high explosion pressure comprises a device body, the device body comprising a piston body and an embedded part device, the embedded part device being precast inside the piston body, the piston body being a cylindrical structure, and the interior and the bottom being a through structure, the embedded part device comprising a main support plate, a first support block and a second support block, the main support plate, the first support block and the second support block being a smoothly transitioned and integrally processed structure, the first support block being located at the left end of the bottom of the main support plate, and the second support block being located at the right end of the bottom of the main support plate.

[0008] As a preferred embodiment of the present invention, the first support block and the second support block are both in an N-shaped structure, and piston pin holes are provided on the sides of the first support block and the second support block, and the piston pin holes are in a circular structure.

[0009] As a preferred embodiment of the present invention, the main support disk is in a cylindrical structure, a connecting convex cover is provided on the top of the main support disk, the connecting convex cover is in an arc-shaped structure, and a plurality of groups of mushroom head blocks are distributed in a circular and equidistant manner on the top of the connecting convex cover.

[0010] As a preferred embodiment of the present invention, the front side, rear side and outer side of the first support block and the second support block are each provided with a plurality of groups of mushroom head blocks distributed in a laterally equidistant manner.

[0011] As a preferred embodiment of the present invention, the mushroom head block includes a first mushroom block and a second mushroom block. The first mushroom block and the second mushroom block are smoothly transitioned and integrally processed and formed structures. The first mushroom block is a cylindrical structure, and the second mushroom block is a circular structure.

[0012] As a preferred embodiment of the present invention, the piston body is in a cylindrical structure, a plurality of groups of piston ring grooves are provided on the outside of the piston body, and an internal cooling oil channel is provided inside the piston body.

[0013] As a preferred embodiment of the present invention, a combustion chamber is provided on the top of the piston body, the combustion chamber is in an ω-shaped structure, and a combustion chamber expansion structure is provided on the top of the combustion chamber.

[0014] As a preferred embodiment of the present invention, a group of piston pin holes distributed in a symmetrical manner are opened on the outer side of the piston body, and the piston pin holes are circular in structure, and one group of the piston pin holes is a through structure with the inside of the piston body.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the reinforced diesel engine aluminum alloy piston capable of withstanding high explosion pressure of the present invention, the embedded parts are designed to enable it to withstand an explosion pressure of up to 250 bar, thereby achieving a better balance between performance and cost. The reinforced diesel engine aluminum alloy piston capable of withstanding high explosion pressure of the present invention has the ability to withstand high explosion pressure, and compared with traditional steel pistons, the cost is lower and it is suitable for a wide range of diesel engine applications. The innovative design of the embedded parts solves the limitation of the use of aluminum alloy pistons in high-pressure environments, and has good market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall internal structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the overall side internal structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of the embedded part device of the present invention;

[0020] Figure 4 It is a schematic diagram of the piston body structure of the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the mushroom head block of the present invention.

[0022] In the figure: 1. Device body; 2. Piston body; 3. Embedded part device; 4. Main bracket plate; 5. First support block; 6. Second support block; 7. Piston pin hole; 8. Connecting convex cover; 9. Mushroom head block; 10. Piston ring groove; 11. Internal cooling oil channel; 12. Combustion chamber; 13. Combustion chamber expansion structure; 14. Piston pin hole; 15. First mushroom block; 16. Second mushroom block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-5 , the present invention provides a technical solution:

[0025] A reinforced diesel engine aluminum alloy piston capable of withstanding high explosion pressure comprises a device body 1, wherein the device body 1 comprises a piston body 2 and an embedded part device 3, wherein the embedded part device 3 is precast inside the piston body 2, wherein the piston body 2 is in a cylindrical structure, and the interior and the bottom are through-type structures, wherein the embedded part device 3 comprises a main support disc 4, a first support block 5 and a second support block 6, wherein the main support disc 4, the first support block 5 and the second support block 6 are a smoothly transitioned and integrally processed structure, wherein the first support block 5 is located at the left end of the bottom of the main support disc 4, and the second support block 6 is located at the right end of the bottom of the main support disc 4, wherein the main support disc 4, the first support block 5 and the second support block 6 in the embedded part device 3 can be used as a skeleton support to improve the strength of the piston body 2, thereby enabling it to withstand an explosion pressure of up to 250 bar, thereby achieving a better balance between performance and cost.

[0026] As a preferred embodiment of the present invention, the first support block 5 and the second support block 6 are both in an N-shaped structure, and piston pin holes 7 are provided on the sides of the first support block 5 and the second support block 6. The piston pin holes 7 are in a circular structure. The piston pin holes 7 provided on the sides of the first support block 5 and the second support block 6 are for facilitating the insertion of the piston pin, thereby achieving connection with the connecting rod.

[0027] As a preferred embodiment of the present invention, the main support disk 4 is in a cylindrical structure, a connecting convex cover 8 is provided on the top of the main support disk 4, the connecting convex cover 8 is in an arc-shaped structure, and a plurality of groups of mushroom head blocks 9 distributed in a ring-shaped and equidistant manner are provided on the top of the connecting convex cover 8. The surface of the embedded part device has a mushroom head block 9 structure. During the casting process of the piston body 2, the aluminum alloy material will be tightly combined with the mushroom head block 9 to form a firm mechanical connection to prevent it from falling off during use.

[0028] As a preferred embodiment of the present invention, the front side, rear side and outer side of the first support block 5 and the second support block 6 are each provided with a plurality of groups of mushroom head blocks 9 distributed in a laterally equidistant manner.

[0029] As a preferred embodiment of the present invention, the mushroom head block 9 includes a first mushroom block 15 and a second mushroom block 16. The first mushroom block 15 and the second mushroom block 16 are a smooth transition and integrally processed structure. The first mushroom block 15 is a cylindrical structure, and the second mushroom block 16 is a circular structure. The surface of the embedded part device has a mushroom head block 9 structure. During the casting process of the piston body 2, the aluminum alloy material will be tightly combined with the mushroom head block 9 to form a firm mechanical connection to prevent it from falling off during use.

[0030] As a preferred embodiment of the present invention, the piston body 2 is cylindrical in structure, and a plurality of groups of piston ring grooves 10 are provided on the outside of the piston body 2. An internal cooling oil channel 11 is provided inside the piston body 2. The piston ring groove 10 is used to install the piston ring. The depth of the piston ring groove 10 should be larger than the thickness of the piston ring to ensure a certain gap in the depth direction. A certain gap should also be reserved between the height of the piston ring groove 10 and the upper and lower interfaces of the ring. Therefore, the detection of the depth of the piston ring groove 10 is essential to ensure product quality.

[0031] As a preferred embodiment of the present invention, a combustion chamber 12 is provided on the top of the piston body 2. The combustion chamber 12 is in an ω-shaped structure. A combustion chamber expansion structure 13 is provided on the top of the combustion chamber 12. When the piston reaches the top dead center, a space is formed between the top of the piston and the cylinder head, and the fuel burns in this space. When the piston is at the top dead center, the space formed above the top surface of the piston and below the bottom surface of the cylinder head is called the combustion chamber 12. The bottom surface of the gasoline engine cylinder head is usually cast with pits of various shapes, and these pits are customarily called the combustion chamber 12.

[0032] As a preferred embodiment of the present invention, a group of piston pin holes 14 distributed in a symmetrical manner are opened on the outside of the piston body 2, and the piston pin holes 14 are circular in structure. One group of the piston pin holes 14 and the inside of the piston body 2 are a through structure. The piston pin holes 14 on the piston body 2 are for facilitating the insertion of the piston pin, thereby achieving connection with the connecting rod.

[0033] Working principle: During operation, the staff will precast the embedded part device 3 into the interior of the piston body 2, and then the piston pin hole 7 on the surface of the first support block 5 and the second support block 6 in the embedded part device 3 will overlap with the piston pin hole 14 on the piston body 2. The main support plate 4, the first support block 5 and the second support block 6 inside the embedded part device 3 can be used as a skeleton support to improve the strength of the piston body 2, so that it can withstand an explosion pressure of up to 250 bar, thereby achieving a better balance between performance and cost. The staff will cast the embedded part device 3 and the piston body 2, and inject high-temperature aluminum alloy liquid for casting. The surface of the embedded part device 3 has a mushroom head block 9 structure. During the casting process of the piston body 2, the aluminum alloy material will be tightly combined with the mushroom head block 9 to form a firm mechanical connection to prevent it from falling off during use. Finally, the cast piston is subjected to necessary heat treatment and machining to ensure the final performance of the piston.

[0034] 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. An enhanced diesel engine aluminum alloy piston capable of withstanding high explosion pressure, characterized in that: The invention comprises a device body (1), wherein the device body (1) comprises a piston body (2) and an embedded component device (3), wherein the embedded component device (3) is precast inside the piston body (2), wherein the piston body (2) is in a cylindrical structure, and the interior and the bottom are through-type structures, wherein the embedded component device (3) comprises a main support plate (4), a first support block (5) and a second support block (6), wherein the main support plate (4), the first support block (5) and the second support block (6) are in a smoothly transitioned and integrally processed structure, wherein the first support block (5) is located at the left end of the bottom of the main support plate (4), and the second support block (6) is located at the right end of the bottom of the main support plate (4).

2. The enhanced diesel engine aluminum alloy piston capable of withstanding high explosion pressure according to claim 1, characterized in that: The first support block (5) and the second support block (6) are both in an N-shaped structure. The side surfaces of the first support block (5) and the second support block (6) are both provided with a piston pin hole (7), and the piston pin hole (7) is in a circular structure.

3. The reinforced diesel engine aluminum alloy piston capable of withstanding high explosion pressure according to claim 1, characterized in that: The main support plate (4) is in a cylindrical structure. A connecting convex cover (8) is provided on the top of the main support plate (4). The connecting convex cover (8) is in an arc-shaped structure. A plurality of groups of mushroom head blocks (9) are arranged in an annular and equidistant manner on the top of the connecting convex cover (8).

4. The enhanced diesel engine aluminum alloy piston capable of withstanding high explosion pressure according to claim 1, characterized in that: The front side, rear side and outer side of the first support block (5) and the second support block (6) are each provided with a plurality of groups of mushroom head blocks (9) distributed in a laterally equidistant manner.

5. The enhanced diesel engine aluminum alloy piston capable of withstanding high explosion pressure according to claim 3, characterized in that: The mushroom head block (9) comprises a first mushroom block (15) and a second mushroom block (16); the first mushroom block (15) and the second mushroom block (16) are smoothly transitioned and integrally processed structures; the first mushroom block (15) is a cylindrical structure, and the second mushroom block (16) is a circular structure.

6. The enhanced diesel engine aluminum alloy piston capable of withstanding high explosion pressure according to claim 1, characterized in that: The piston body (2) is of cylindrical structure, a plurality of groups of piston ring grooves (10) are provided on the outside of the piston body (2), and an internal cooling oil channel (11) is provided inside the piston body (2).

7. The enhanced diesel engine aluminum alloy piston capable of withstanding high explosion pressure according to claim 1, characterized in that: A combustion chamber (12) is provided on the top of the piston body (2); the combustion chamber (12) is in an ω-shaped structure; and a combustion chamber expansion structure (13) is provided on the top of the combustion chamber (12).

8. The enhanced diesel engine aluminum alloy piston capable of withstanding high explosion pressure according to claim 1, characterized in that: A group of piston pin holes (14) distributed in a symmetrical manner are opened on the outside of the piston body (2); the piston pin holes (14) are circular in structure; and a group of the piston pin holes (14) and the inside of the piston body (2) are in a through-type structure.

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