Automobile engine piston

Abstract

The utility model provides an automobile engine piston, which relates to the technical field of engine pistons and comprises a piston mechanism, a connecting rod mechanism is arranged at the bottom of the piston mechanism, the piston mechanism comprises a piston main body, a piston pin is movably inserted into the inner surface wall of the piston main body, and a bearing is fixedly sleeved on the outer surface wall of the piston pin. Piston pin clamping rings are clamped to the two sides of the outer wall of the piston body correspondingly and located at the two ends of the outer wall of the piston pin correspondingly. The bearing is arranged on the outer surface wall of the piston pin, so that when the connecting rod rotates on the outer surface wall of the piston pin, the bearing is driven to rotate, friction between the connecting rod and the piston pin can be reduced, the service life of the connecting rod and the piston pin can be prolonged, and the utilization rate of the piston is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of engine pistons, in particular to an automobile engine piston. Background Art

[0002] The automobile engine piston is the core component of the automobile engine. It is used to convert the heat energy generated by fuel combustion into mechanical energy. As the engine develops towards high compression ratio and high output power, higher requirements are naturally placed on the engine piston's ability to resist thermal and mechanical loads to prevent piston cracking or ablation.

[0003] In the prior art, such as Chinese patent number: CN202187834U, a car engine piston includes an upper body and a skirt body, wherein the upper body constitutes the top, the ring groove and the piston pin seat of the piston, and the skirt body constitutes the skirt of the piston. The upper body is integrally formed by alloy structural steel, and an "ω"-shaped pit is arranged on the top of the upper body. The advantage of this device is that the piston has good reliability and can adapt to more severe working environments.

[0004] In the above patent, although the device has good reliability and can adapt to more severe working environments, the piston pin of the device is fixedly installed. During long-term use, the friction between the connecting rod and the piston pin will gradually increase, which will affect the use effect of the piston, so a new engine piston is needed. Utility Model Content

[0005] The utility model mainly provides an automobile engine piston which can reduce the friction between a connecting rod and a piston pin.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: an automobile engine piston, comprising: a piston mechanism, a connecting rod mechanism is arranged at the bottom of the piston mechanism;

[0007] The piston mechanism comprises a piston body, an inner surface wall of the piston body is movably inserted with a piston pin, an outer surface wall of the piston pin is fixedly sleeved with a bearing, piston pin retaining rings are clamped on both sides of the outer wall of the piston body, and two piston pin retaining rings are respectively located at the two ends of the outer wall of the piston pin.

[0008] Preferably, a group of circular recesses are provided on the top of the piston body, and the shape and size of each circular recess are equal.

[0009] Preferably, three circular grooves are formed on the outer wall of the piston body, and a group of first oil holes are formed in the circular groove at the bottom.

[0010] Preferably, an air ring is movably embedded in the inner surface wall of two of the three circular grooves, and an oil ring is movably embedded in the inner surface wall of one of the three circular grooves.

[0011] Preferably, both sides of the outer wall of the piston body are coated with a lubricating coating.

[0012] Preferably, the connecting rod mechanism comprises a connecting rod body, a connecting rod cover is arranged at the bottom of the connecting rod body, and a connecting rod bolt is movably inserted between the connecting rod body and the connecting rod cover.

[0013] Preferably, connecting rod bearings are disposed on the inner surfaces of the connecting rod body and the connecting rod cover, a second oil hole is provided on the inner surface wall of the connecting rod body, and the second oil hole is communicated with one of the connecting rod bearings.

[0014] Preferably, one end of the connecting rod body is movably sleeved on the outer wall of the bearing.

[0015] Compared with the prior art, the advantages and positive effects of the utility model are:

[0016] 1. In the utility model, by arranging a bearing on the outer wall of the piston pin, when the connecting rod rotates on the outer wall of the piston pin, the bearing will also rotate, thereby reducing the friction between the connecting rod and the piston pin, thereby increasing the service life of the connecting rod and the piston pin, improving the utilization rate of the piston, and increasing the use effect of the device.

[0017] 2. In the utility model, a group of circular depressions are arranged on the top of the piston, which can make the fuel and air mix more perfectly, reduce the pressure at the rear of the piston when the engine is running, and improve the overall performance of the engine. The circular depressions can significantly reduce the fuel consumption of the diesel engine and improve its performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model provides a structural stereogram of a main view of a piston in an automobile engine;

[0019] Figure 2 The utility model provides a structural stereogram of a piston mechanism in a car engine piston from a front view;

[0020] Figure 3 The utility model provides a structural stereogram of the bottom side of a piston mechanism in a car engine piston;

[0021] Figure 4 The utility model provides a structural stereogram of a connecting rod mechanism in a piston of an automobile engine.

[0022] Legend: 1. Piston mechanism; 101. Piston body; 102. Piston pin; 103. Bearing; 104. Piston pin retaining ring; 105. Circular depression; 106. Circular groove; 107. First oil hole; 108. Air ring; 109. Oil ring; 110. Lubricating coating; 2. Connecting rod mechanism; 201. Connecting rod body; 202. Connecting rod cover; 203. Connecting rod bolt; 204. Connecting rod bearing; 205. Second oil hole. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0025] Example 1

[0026] See also Figure 1-Figure 4 , the utility model provides a technical solution: an automobile engine piston, comprising: a piston mechanism 1, a connecting rod mechanism 2 is arranged at the bottom of the piston mechanism 1;

[0027] The piston mechanism 1 includes a piston body 101, an inner surface wall of the piston body 101 is movably inserted with a piston pin 102, an outer surface wall of the piston pin 102 is fixedly sleeved with a bearing 103, and piston pin retaining rings 104 are clamped on both sides of the outer wall of the piston body 101, and the two piston pin retaining rings 104 are respectively located at the two ends of the outer wall of the piston pin 102.

[0028] The effect achieved by the entire embodiment 1 is that, since the outer wall of the piston pin 102 is provided with a bearing 103, the connecting rod body 201 will drive the bearing 103 to rotate during the rotation process, thereby reducing the friction between the connecting rod body 201 and the piston pin 102, thereby increasing the service life of the connecting rod body 201 and the piston pin 102, and the piston pin retaining ring 104 can fix the piston pin 102 to prevent the piston pin 102 from slipping from the inside of the piston body 101.

[0029] Example 2

[0030] like Figure 1-Figure 4As shown, a group of circular depressions 105 are provided on the top of the piston body 101, and the shape and size of each circular depression 105 are equal. Three circular grooves 106 are provided on the outer wall of the piston body 101, and a group of first oil holes 107 are provided in the circular groove 106 at the bottom. The inner wall of two of the three circular grooves 106 is movably embedded with an air ring 108, and the inner wall of one of the three circular grooves 106 is movably embedded with an oil ring 109. Both sides of the outer wall of the piston body 101 are coated with lubricating Coating 110, the connecting rod mechanism 2 includes a connecting rod body 201, a connecting rod cover 202 is arranged at the bottom of the connecting rod body 201, a connecting rod bolt 203 is movably inserted between the connecting rod body 201 and the connecting rod cover 202, connecting rod bearings 204 are arranged on the inner surfaces of the connecting rod body 201 and the connecting rod cover 202, a second oil hole 205 is opened on the inner surface wall of the connecting rod body 201, and the second oil hole 205 is connected with one of the connecting rod bearings 204, and one end of the connecting rod body 201 is movably sleeved on the outer wall of the bearing 103.

[0031] The effect achieved by the entire embodiment 2 is that the circular depression 105 allows the fuel and air mixture to ignite near the cylinder wall, so that less nitrogen oxides and particulate matter are generated, the combustion temperature is also reduced, and the impact on the environment is naturally reduced. The deposits in the engine will also be reduced accordingly, the service life of the engine oil will be improved, and the cost of changing the engine oil can be reduced. The role of the air ring 108 is to seal the cylinder and transfer the heat absorbed by the piston body 101 to the cylinder wall and enter the cooling system. The role of the oil ring 109 is to scrape off the excessive lubricating oil splashed on the cylinder wall. It is the main path for the heat dissipation of the piston, especially the first ring, which transfers 40% to 50% of the total heat, the lubricating coating 110 is a solid lubricant based on a special binder, especially under high temperature conditions, it can still resist the erosion of fuel and engine oil, the formula of these anti-friction coatings makes it a lifelong lubricant, with excellent performance under harsh working conditions, the friction and wear of the piston treated with the anti-friction coating are significantly reduced, the function of the connecting rod body 201 is mainly to connect the piston body 101 and the crankshaft, the lubricating fluid can flow into the surface of the bearing 103 through the second oil hole 205, and the connecting rod bearing 204 is used for friction protection of the connecting rod body 201 when it runs at high speed.

[0032] The use method and working principle of this device are as follows: Since the outer wall of the piston pin 102 is provided with a bearing 103, the connecting rod body 201 will drive the bearing 103 to rotate during the rotation process, thereby reducing the friction between the connecting rod body 201 and the piston pin 102, thereby increasing the service life of the connecting rod body 201 and the piston pin 102, and the circular depression 105 can allow the fuel and air mixture to ignite near the cylinder wall, so that less nitrogen oxides and particulate matter are produced, the combustion temperature is also reduced, and the impact on the environment is naturally reduced, and the deposits in the engine will also be reduced accordingly, the service life of the engine oil will be increased, and the cost of replacing the engine oil can be reduced. At the same time, the circular depression 105 can make the fuel and air mix more perfectly, and can reduce the pressure at the rear of the piston body 101 when the engine is running, thereby improving the overall performance of the engine. The circular depression 105 can significantly reduce the fuel consumption of the diesel engine and improve its performance. In summary, the problems raised in the above background are solved.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A piston for an automobile engine, characterized in that: include: A piston mechanism (1), wherein a connecting rod mechanism (2) is arranged at the bottom of the piston mechanism (1); The piston mechanism (1) comprises a piston body (101), a piston pin (102) being movably inserted into the inner surface wall of the piston body (101), a bearing (103) being fixedly sleeved on the outer surface wall of the piston pin (102), piston pin retaining rings (104) being clamped on both sides of the outer wall of the piston body (101), and two piston pin retaining rings (104) being respectively located at two ends of the outer wall of the piston pin (102).

2. The automobile engine piston according to claim 1, characterized in that: A group of circular recesses (105) are provided on the top of the piston body (101), and the shape and size of each circular recess (105) are equal.

3. The automobile engine piston according to claim 2, characterized in that: The outer wall of the piston body (101) is provided with three circular grooves (106), and the circular groove (106) at the bottom is provided with a group of first oil holes (107).

4. The automobile engine piston according to claim 3, characterized in that: An air ring (108) is movably embedded in the inner surface wall of two of the three circular grooves (106), and an oil ring (109) is movably embedded in the inner surface wall of one of the three circular grooves (106).

5. The automobile engine piston according to claim 4, characterized in that: Both sides of the outer wall of the piston body (101) are coated with a lubricating coating (110).

6. The automobile engine piston according to claim 5, characterized in that: The connecting rod mechanism (2) comprises a connecting rod body (201), a connecting rod cover (202) is arranged at the bottom of the connecting rod body (201), and a connecting rod bolt (203) is movably inserted between the connecting rod body (201) and the connecting rod cover (202).

7. The automobile engine piston according to claim 6, characterized in that: The inner walls of the connecting rod body (201) and the connecting rod cover (202) are both provided with connecting rod bearing bushes (204), the inner wall of the connecting rod body (201) is provided with a second oil hole (205), and the second oil hole (205) is connected to one of the connecting rod bearing bushes (204).

8. The automobile engine piston according to claim 6, characterized in that: One end of the connecting rod body (201) is movably sleeved on the outer wall of the bearing (103).

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