Diesel engine shell with friction reduction and noise reduction functions

Abstract

The utility model provides a diesel engine casing with antifriction and noise reduction functions, which belongs to the technical field of mechanical structure lubrication and machining, and comprises a cylinder body, a cylinder cover and an oil pan, a cylinder sleeve is sleeved in the cylinder body, a combustion chamber and a connecting rod chamber are formed in the cylinder sleeve, the combustion chamber is positioned on one side close to the cylinder cover, and the connecting rod chamber is positioned on the other side close to the cylinder cover. The connecting rod chamber is located on the side close to the oil pan, a groove micro-texture is formed in the inner wall of the air cylinder sleeve and located in the connecting rod chamber, an expanded crankshaft chamber is further formed in the cylinder body, and the expanded crankshaft chamber is located below the connecting rod chamber and is arranged on the side close to the oil pan. A protruding micro-texture is arranged on the inner wall of the cylinder body, and the protruding micro-texture is located in the expanded crankshaft chamber. By arranging the groove microtextures and the protruding microtextures, the effect of reducing friction and noise is mainly achieved, the protruding microtextures scatter generated sound waves, the concentration phenomenon and vibration are reduced, and therefore noise is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical fields of mechanical structure lubrication and mechanical processing, and particularly relates to a diesel engine housing with friction reduction and noise reduction. Background Art

[0002] Diesel engines are generally more efficient than gasoline engines, and diesel fuel is usually cheaper than gasoline. Coupled with the high fuel efficiency of diesel engines, diesel vehicles have a certain advantage in fuel costs. In some emerging markets, diesel engines are favored due to their high fuel economy. The energy density of diesel fuel is higher than that of gasoline, which enables diesel engines to generate more energy under the same volume or mass. Therefore, diesel vehicles usually have a longer cruising range and better fuel economy.

[0003] Diesel engines are usually designed to be more robust and durable because they need to withstand higher combustion pressures, which enables them to exhibit a longer service life under high-load conditions. However, an engine is a typical multi-friction motion mechanical system. Due to the high combustion efficiency of diesel engines, large housing friction losses and high noise occur during their operation, resulting in a reduced service life of key components. Summary of the Utility Model

[0004] Based on this, the utility model provides a diesel engine housing with friction reduction and noise reduction to solve the technical problems existing in the prior art, namely, due to the high combustion efficiency of diesel engines, large housing friction losses and high noise occur during their operation, resulting in a reduced service life of key components.

[0005] The technical solution for the utility model to solve the above technical problems is as follows:

[0006] A diesel engine housing with friction reduction and noise reduction includes a cylinder block, a cylinder head, and an oil pan. A cylinder liner is sleeved inside the cylinder block. A combustion chamber and a connecting rod chamber are formed inside the cylinder liner. The combustion chamber is located on the side close to the cylinder head, and the connecting rod chamber is located on the side close to the oil pan. Groove micro-textures are provided on the inner wall of the cylinder liner, and the groove micro-textures are located inside the connecting rod chamber. An enlarged crankshaft chamber is also provided inside the cylinder block. The enlarged crankshaft chamber is located below the connecting rod chamber and is arranged close to the side of the oil pan. Protrusion micro-textures are provided on the inner wall of the cylinder block, and the protrusion micro-textures are located inside the enlarged crankshaft chamber.

[0007] Preferably, several circles of the groove micro-textures are arranged from top to bottom inside the connecting rod chamber.

[0008] Preferably, the groove micro-textures are in the shape of variable-diameter openings.

[0009] Preferably, a plurality of immersion grooves are formed in the groove micro-texture, and the plurality of immersion grooves are evenly distributed in the groove micro-texture.

[0010] Preferably, a plurality of layers of the convex micro-textures are arranged in the crankshaft chamber from top to bottom.

[0011] Preferably, the convex micro-texture is one of a "square" shape or a "convex" shape.

[0012] Compared with the prior art, the utility model has at least the following advantages:

[0013] By arranging the groove micro-texture and the convex micro-texture, the main function is to reduce friction and noise. The lubricating oil in the groove micro-texture will slide onto the outer surface of the piston. When the piston moves upward, the lubricating oil flowing out of the groove micro-texture plays a role in lubricating the piston, improving the lubrication effect on the piston. At the same time, when the engine is rotating, noise will be generated. By arranging the convex micro-texture on the inner wall of the cylinder block and located in the enlarged crankshaft chamber, for the sound waves generated by the engine, the convex micro-texture scatters the generated sound waves, reducing the concentration phenomenon and vibration, thereby reducing noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 An isometric view of a diesel engine housing with friction reduction and noise reduction.

[0015] Figure 2 A half-sectional isometric view of a diesel engine housing with friction reduction and noise reduction.

[0016] Figure 3 A left view of a diesel engine housing with friction reduction and noise reduction.

[0017] Figure 4 For Figure 3 A-A cross-sectional view of

[0018] Figure 5 For Figure 4 -A partial enlarged view.

[0019] In the figure: cylinder block 100, cylinder liner 110, combustion chamber 111, connecting rod chamber 112, groove micro-texture 113, immersion groove 114, enlarged crankshaft chamber 120, convex micro-texture 121, cylinder head 200, oil pan 300, piston 400, connecting rod 500, crankshaft 600. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0021] It should be understood that the same or similar numbers in the drawings of the embodiments correspond to the same or similar parts. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] Please see Figures 1 to 5 A diesel engine housing with friction reduction and noise reduction, comprising a cylinder block 100, a cylinder head 200 and an oil pan 300, wherein the cylinder head 200 is arranged above the cylinder block 100 and connected by bolts, and the oil pan 300 is arranged below the cylinder block 100 and connected by bolts, and further comprising a piston 400, a connecting rod 500 and a crankshaft 600 matched with the diesel engine housing, wherein the cylinder block 100 is sleeved with a cylinder sleeve 110, the piston 400 is sleeved in the cylinder sleeve 110, the connecting rod 500 is connected to the piston 400, and a combustion chamber 111 and a connecting rod chamber 112 are formed in the cylinder sleeve 110, and the combustion chamber 111 is located near the On one side of the cylinder head 200, the connecting rod chamber 112 is located close to the oil pan 300, and a groove micro-texture 113 is provided on the inner wall of the cylinder liner 110, and the groove micro-texture 113 is located in the connecting rod chamber 112. An enlarged crankshaft chamber 120 is also provided in the cylinder block 100, and the enlarged crankshaft chamber 120 is located below the connecting rod chamber 112 and is arranged close to the oil pan 300. The crankshaft 600 is arranged in the enlarged crankshaft chamber 120, and the crankshaft 600 is connected to the connecting rod 500. A protruding micro-texture 121 is provided on the inner wall of the cylinder block 100, and the protruding micro-texture 121 is located in the enlarged crankshaft chamber 120.

[0023] The specific working process is:

[0024] When the diesel engine is working, the piston 400 reciprocates within the cylinder liner 110 and drives the crankshaft 600 to perform circular motion through the connecting rod 500, converting the reciprocating motion into circular motion. Since the combustible gas explodes and burns within the cylinder liner 110, a driving force is generated to push the piston 400 downward. The piston 400 then transmits the thrust to the connecting rod 500, which drives the crankshaft 600 to perform circular motion, completing the conversion from thermal energy to mechanical energy. An air ring and an oil ring are provided on the piston 400, and the air ring and the oil ring are in close contact with the cylinder liner 110 to achieve the effects of sealing and oil control. Since the piston 400 continuously moves within the cylinder liner 110, the space of the combustion chamber 111 changes with the movement of the piston 400. When the piston 400 moves upward, the highest position of the top of the piston 400 is the top dead center, i.e., the combustion chamber 111 with the smallest space. When the piston 400 moves downward, the lowest position of the top of the piston 400 is the bottom dead center, i.e., the combustion chamber 111 with the largest space. The space within the cylinder liner 110 minus the combustion chamber 111 with the largest space is the connecting rod chamber 112. When the top of the piston 400 moves to the bottom dead center, since the groove micro-texture 113 is provided on the connecting rod chamber 112, the side wall of the piston 400 is in contact with the groove micro-texture 113 of the connecting rod chamber 112, and the groove micro-texture 113 is located below the air ring of the piston 400. Since the lubrication system of the engine starts when the engine is working, there is lubricating oil within the cylinder liner 110, and part of the lubricating oil enters the groove micro-texture 113. The groove micro-texture 113 has the function of temporarily storing the lubricating oil. When the piston 400 moves to the groove micro-texture 113, the lubricating oil within the groove micro-texture 113 slides onto the outer surface of the piston 400. When the piston 400 moves upward, the lubricating oil flowing out of the groove micro-texture 113 plays a role in lubricating the piston 400, improving the lubrication effect on the piston 400. At the same time, when the engine is rotating, noise is generated. By providing the protrusion micro-texture 121 on the inner wall of the cylinder block 100 and located within the enlarged crankshaft chamber 120, for the sound waves generated by the engine, the protrusion micro-texture 121 scatters the generated sound waves, reducing the concentration phenomenon and vibration, thereby reducing noise.

[0025] Achieved effects

[0026] By setting the groove micro-texture 113 and the protrusion micro-texture 121, the main function is to reduce friction and noise. The lubricating oil in the groove micro-texture 113 will slide onto the outer surface of the piston 400. When the piston 400 moves upward, the lubricating oil flowing out of the groove micro-texture 113 plays a role in lubricating the piston 400, improving the lubrication effect on the piston 400, and reducing the friction between the piston 400 and the cylinder liner 110. At the same time, when the engine is rotating, noise will be generated. By setting the protrusion micro-texture 121 on the inner wall of the cylinder block 100 and located in the enlarged crank chamber 120, for the sound waves generated by the engine, the protrusion micro-texture 121 scatters the generated sound waves, reducing the concentration phenomenon and vibration, thereby reducing noise.

[0027] Further, several circles of the groove micro-texture 113 are arranged from top to bottom in the connecting rod chamber 112. Arranging several circles of the groove micro-texture 113 can store more lubricating oil and improve the lubrication effect on the piston 400.

[0028] Specifically, a preset spacing is set between adjacent groove micro-textures 113, and the preset spacings are the same.

[0029] Still further, the groove micro-texture 113 is in a shape of variable diameter opening. The side with a larger opening faces the surface of the piston 400. When the groove micro-texture 113 is in the shape of variable diameter opening, the lubricating oil enters the groove micro-texture 113 and can quickly flow out of the groove micro-texture 113 and fall onto the outer surface of the piston 400, improving the lubrication effect on the piston 400.

[0030] Specifically, the shape of the variable diameter opening of the groove micro-texture 113 can be one of a trapezoidal opening shape and a triangular opening shape.

[0031] Even further, in order to improve the lubrication effect on the piston 400, several immersion grooves 114 are provided in the groove micro-texture 113, and the several immersion grooves 114 are evenly distributed in the groove micro-texture 113. The lubricating oil on the inner wall surface of the cylinder liner 110 will fall along the inner wall surface and enter the groove micro-texture 113. The lubricating oil entering the groove micro-texture 113 will quickly be distributed in the immersion grooves 114, playing a role in shunting the lubricating oil. At the same time, it also has a guiding role, making the lubricating oil flowing out of the immersion grooves 114 evenly distributed on the surface of the piston 400. Furthermore, when the piston 400 reciprocates in the cylinder liner 110, the lubrication effect is improved.

[0032] Further, several layers of the raised micro-textures 121 are arranged from top to bottom in the crankshaft 600 chamber. For the multi-layered raised micro-textures 121, when the sound waves generated by the engine propagate to the raised micro-textures 121, the multi-layered raised micro-textures 121 can scatter the sound waves, reducing the noise and vibration generated by the engine.

[0033] Specifically, the raised micro-texture 121 is one of the "mouth" shape or the "convex" shape.

[0034] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A diesel engine housing with friction reduction and noise reduction, comprising a cylinder block, a cylinder head and an oil pan, characterized in that: A cylinder liner is sleeved in the cylinder block. A combustion chamber and a connecting rod chamber are formed in the cylinder liner. The combustion chamber is located on the side close to the cylinder head, and the connecting rod chamber is located on the side close to the oil pan. Groove micro-textures are formed on the inner wall of the cylinder liner, and the groove micro-textures are located in the connecting rod chamber. An enlarged crankshaft chamber is also formed in the cylinder block. The enlarged crankshaft chamber is located below the connecting rod chamber and is arranged close to the oil pan side. Protrusion micro-textures are arranged on the inner wall of the cylinder block, and the protrusion micro-textures are located in the enlarged crankshaft chamber.

2. A diesel engine housing with friction reduction and noise reduction as claimed in claim 1, characterized in that: A plurality of circles of the groove micro-textures are arranged in the connecting rod chamber from top to bottom.

3. A diesel engine housing with friction reduction and noise reduction as claimed in claim 2, characterized in that: The groove micro-textures are in a variable-diameter opening shape.

4. A diesel engine housing with friction reduction and noise reduction as claimed in claim 2, characterized in that: A plurality of immersion grooves are formed in the groove micro-textures, and the plurality of immersion grooves are evenly distributed in the groove micro-textures.

5. A diesel engine housing with friction reduction and noise reduction as claimed in claim 1, characterized in that: A plurality of layers of the protrusion micro-textures are arranged in the crankshaft chamber from top to bottom.

6. A diesel engine housing with friction reduction and noise reduction as claimed in claim 5, characterized in that: The protrusion micro-texture is one of a "mouth" shape or a "convex" shape.

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