Lightweight piston for high-efficiency gasoline engine

Abstract

The lightweight piston for the high-efficiency gasoline engine comprises a piston body and a connecting rod arranged at the bottom end of the piston body, the connecting rod is composed of a rod body and a connecting rod cover, the connecting rod cover is arranged at the bottom end of the rod body, and supporting seats are symmetrically arranged on the two sides of the inner wall of the piston body. The top end of the rod body is clamped into the inner side of the piston body and located between the symmetrically-arranged supporting bases. According to the lightweight piston for the high-efficiency gasoline engine, through the designed fixing assembly, the phenomenon that in the installation process of an original lightweight piston for the high-efficiency gasoline engine, after the top end of the rod body is clamped into the inner side of the piston body, a connecting rod shakes after the piston body and the connecting rod are installed due to size deviation is improved; and after the piston body and the connecting rod are installed, the position is fixed through the fixing assembly, the movement range of the rod body is limited, and the stability of the light-weight piston during use is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of piston technology, specifically relating to a lightweight piston for a high-efficiency gasoline engine. Background Technology

[0002] The main function of a high-efficiency gasoline engine is to convert chemical energy into mechanical energy to drive various vehicles and equipment. A gasoline engine mixes gasoline with air and burns it in the cylinder to produce high-temperature and high-pressure gas that drives a lightweight piston. This gas is then converted into rotational motion through the crankshaft and connecting rod mechanism to drive vehicles or other mechanical equipment.

[0003] In the use of existing lightweight pistons for high-efficiency gasoline engines, when it is necessary to install the connecting rod and the piston body, after the top of the connecting rod is inserted between the symmetrically arranged support seats inside the piston body, due to a certain deviation between the top of the connecting rod and the symmetrically arranged support seats, the connecting rod will move after the installation is completed by passing through the piston pin, resulting in an unstable installation problem. To address this issue, this utility model proposes a lightweight piston for high-efficiency gasoline engines. Utility Model Content

[0004] The purpose of this invention is to provide a lightweight piston for a high-efficiency gasoline engine, so as to solve the problem of unstable installation between the connecting rod and the piston body mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lightweight piston for a high-efficiency gasoline engine, comprising a piston body and a connecting rod disposed at the bottom end of the piston body. The connecting rod consists of a rod body and a connecting rod cap, the connecting rod cap being disposed at the bottom end of the rod body. Support seats are symmetrically arranged on both sides of the inner wall of the piston body. The top end of the rod body is inserted into the inner side of the piston body and located between the symmetrically arranged support seats. Piston pins penetrate the interior of the symmetrically arranged support seats, the inner side of the top end of the rod body, and the inner side of the piston body. A fixing component is disposed on the inner side of the support seat. The fixing component consists of a movable groove, a movable block, and a fixed groove. The movable groove is opened on the inner side of the support seat, the fixed groove is opened on the side of the top end of the rod body, and the movable block is disposed on the inner side of the movable groove and the fixed groove.

[0006] Preferably, the end cross-section of the movable block is circular, and the inner wall of the movable block is threaded to the inner side of the movable groove.

[0007] Preferably, the connecting rod is an aluminum alloy component.

[0008] Preferably, the end surface of the movable block is in contact with the inner wall of the fixed groove, and the outer side of the movable block is at the same level as the outer surface of the support base.

[0009] Preferably, a limiting component is symmetrically arranged between the rod body and the connecting rod cover. The limiting component consists of a locking block and a locking groove. The locking block is fixed to the bottom end of the rod body, and the locking groove is opened at the top end of the connecting rod cover. The locking block and the locking groove are in an engaged state.

[0010] Preferably, the cross-section of the card block has a rectangular structure.

[0011] Preferably, an oil ring and an air ring are provided at the top end of the connecting rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By designing a fixing component, the previous lightweight piston for high-efficiency gasoline engines was improved. During the installation process, when the top of the rod was inserted into the inside of the piston body, the connecting rod would wobble due to dimensional deviations. By setting a fixing component at the installation point of the piston body and connecting rod, the piston body and connecting rod are fixed in position after installation, and the range of motion of the rod is limited, ensuring the stability of the lightweight piston during use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of a partial structure of the piston inner side of this utility model;

[0016] Figure 3 This is a cross-sectional view of the piston and connecting rod connection of this utility model;

[0017] Figure 4 This is a schematic diagram of the installation of the rod body and connecting rod cover of this utility model;

[0018] In the diagram: 1. Connecting rod; 11. Rod body; 111. Locking block; 112. Locking groove; 12. Connecting rod cover; 2. Piston body; 20. Fixing assembly; 201. Movable groove; 202. Movable block; 203. Fixing groove; 3. Piston pin. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1 to 4This utility model provides a technical solution: a lightweight piston for a high-efficiency gasoline engine, including a piston body 2 and a connecting rod 1 disposed at the bottom end of the piston body 2. The connecting rod 1 is composed of a rod body 11 and a connecting rod cap 12. The connecting rod cap 12 is disposed at the bottom end of the rod body 11. Support seats are symmetrically arranged on both sides of the inner wall of the piston body 2. The top end of the rod body 11 is inserted into the inner side of the piston body 2 and located between the symmetrically arranged support seats. A piston pin 3 passes through the interior of the symmetrically arranged support seats, the inner side of the top end of the rod body 11, and the inner side of the piston body 2. A fixing component 20 is disposed on the inner side of the support seat. When the piston body 2 and the connecting rod 1 are installed, if there is a large deviation at the connection point, the fixing component 20 reduces the distance between them, increasing installation stability. The fixing component 20 is composed of a movable groove 201, a movable block 202, and a fixing groove 203. The movable groove 201 is opened on the inner side of the support seat, and the fixing groove 203 is opened on the side of the top end of the rod body 11. The movable block 202 is located inside the movable groove 201 and the fixed groove 203. The designed fixing component 20 improves the problem that when the top of the rod 11 is inserted into the inner side of the piston body 2 during the installation of the lightweight piston for the high-efficiency gasoline engine, the connecting rod 1 wobbles due to dimensional deviation. By setting the fixing component 20 at the installation point of the piston body 2 and the connecting rod 1, the piston body 2 and the connecting rod 1 are fixed in position after installation, and the range of motion of the rod 11 is limited, ensuring the stability of the lightweight piston during use. The end cross-section of the movable block 202 is circular. The inner wall of the movable block 202 is threaded to the inner side of the movable groove 201. The connecting rod 1 is made of aluminum alloy. The end surface of the movable block 202 is in contact with the inner wall of the fixed groove 203. The outer side of the movable block 202 is at the same level as the outer surface of the support seat. An oil ring and a gas ring are set at the top of the connecting rod 1.

[0021] In this embodiment, preferably, a limiting component is symmetrically arranged between the rod body 11 and the connecting rod cover 12. When the rod body 11 and the connecting rod cover 12 are installed, the connecting rod cover 12 and the rod body 11 are fitted together, and the locking block 111 is simultaneously inserted into the inner side of the locking groove 112, so that the rod body 11 and the connecting rod cover 12 are limited during installation. The limiting component consists of the locking block 111 and the locking groove 112. The locking block 111 is fixed to the bottom end of the rod body 11, and the locking groove 112 is opened at the top end of the connecting rod cover 12. The locking block 111 and the locking groove 112 are in an engaged state. The cross-section of the locking block 111 is rectangular. The limiting component initially fixes the position of the rod body 11 and the connecting rod cover 12 during installation, which facilitates the subsequent bolt penetration operation.

[0022] The working principle and usage process of this utility model are as follows: When the lightweight piston of this high-efficiency gasoline engine is in operation, the lightweight piston moves up and down in the cylinder to complete four stages: intake, compression, power, and exhaust. That is, the intake stage draws in the air-fuel mixture, the compression stage compresses the air-fuel mixture, the power stage ignites and burns to drive the piston to do work, and the exhaust stage discharges exhaust gas. When it is necessary to install the connecting rod 1 of the lightweight piston with the piston body 2, the top of the rod 11 is inserted into the symmetrically arranged support seats inside the piston body 2, and then the piston pin 3 is passed through. After the initial installation is completed, when the connecting rod 1 can move back and forth, the movable block 202 is rotated. Through the threaded connection between the movable block 202 and the movable groove 201, the movable block 202 is inserted into the inner side of the fixed groove 203, fixing the position of the rod 11 and completing the installation operation of the connecting rod 1 and the piston body 2.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightweight piston for high performance gasoline engines, comprising a piston body (2) and a connecting rod (1) arranged at the bottom end of the piston body (2), characterized in that: The connecting rod (1) is composed of a rod body (11) and a connecting rod cover (12), the connecting rod cover (12) is arranged at the bottom end of the rod body (11), the inner wall of the piston body (2) is symmetrically provided with a support seat, the top end of the rod body (11) is clamped into the inner side of the piston body (2) and located between the symmetrically arranged support seats, the inside of the symmetrically arranged support seats, the top end of the rod body (11) and the inner side of the piston body (2) are penetrated by a piston pin (3), the inner side of the support seat is provided with a fixing assembly (20), the fixing assembly (20) is composed of a movable groove (201), a movable block (202) and a fixed groove (203), the movable groove (201) is opened in the inner side of the support seat, the fixed groove (203) is opened in the top end side of the rod body (11), and the movable block (202) is arranged in the inner side of the movable groove (201) and the fixed groove (203).

2. A lightweight piston for high performance gasoline engines according to claim 1, characterized in that: The end cross section of the movable block (202) is in a circular structure, and the inner wall of the movable block (202) is in threaded connection with the inner side of the movable groove (201).

3. A lightweight piston for high performance gasoline engines according to claim 1, characterized in that: The connecting rod (1) is an aluminum alloy material member.

4. A lightweight piston for high performance gasoline engines according to claim 1, characterized in that: The end surface of the movable block (202) is in a fitted state with the inner wall of the fixed groove (203), and the outer side of the movable block (202) is in the same horizontal plane with the outer surface of the support seat.

5. A lightweight piston for high performance gasoline engines according to claim 1, characterized in that: The rod body (11) and the connecting rod cover (12) are symmetrically provided with a limiting assembly, the limiting assembly is composed of a clamping block (111) and a clamping groove (112), the clamping block (111) is fixed to the bottom end of the rod body (11), the clamping groove (112) is opened at the top end of the connecting rod cover (12), and the clamping block (111) and the clamping groove (112) are in a clamped state.

6. A lightweight piston for high performance gasoline engines according to claim 5, characterized in that: The cross section of the clamping block (111) is in a rectangular structure.

7. A lightweight piston for high performance gasoline engines according to claim 1, characterized in that: The top end of the connecting rod (1) is provided with an oil ring, and the top end of the connecting rod (1) is provided with an air ring.

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