Engine

Abstract

The utility model provides an engine which comprises a cylinder body, a cylinder sleeve, a piston, a connecting rod and a reinforcing plate with one side of a water tank of the engine as the upper portion, the cylinder body is used for containing, the cylinder sleeve is transversely arranged in the cylinder body, and the piston is arranged in the cylinder sleeve and reciprocates in the axial direction of the cylinder sleeve. The connecting rod is arranged on the side, away from the cylinder body in the axial direction of the cylinder sleeve, of the piston and connected with the piston to drive the piston to reciprocate, the cylinder body close to the piston side extends inwards in the axial direction of the cylinder sleeve to form the reinforcing plate, a gap is formed between the reinforcing plate and the cylinder sleeve, and the reinforcing plate is arranged above the cylinder sleeve and provided with a through hole in the radial direction of the cylinder sleeve. According to the engine, the problem of local overheating caused by reduction of a gap between the air cylinder sleeve and the water jacket reinforcing plate above the engine body due to cylinder expansion is solved, and the problems that cooling water between the reinforcing plate and the air cylinder sleeve is not easy to flow, so that the cooling water is boiled too early and rapidly evaporated and the like are solved; therefore, the heat dissipation effect of the position of the engine is improved, and normal work of the engine is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of engineering machinery, in particular to an engine. Background Art

[0002] As engines become increasingly powerful, driven by cost reduction and increased component versatility, some engines require cylinder enlargement. This expansion requires increasing the diameter of the cylinder liner, which reduces the clearance between the cylinder liner and the water jacket reinforcement plate above the engine block. However, to maintain engine strength, the reinforcement plate is essential to prevent the engine block and the inner bore of the cylinder liner from becoming out of round. This reduction in clearance inevitably leads to localized overheating between the cylinder liner and the engine block, creating a "dead water zone." This overheating in this localized overheating zone causes the engine to boil prematurely, causing the cooling water to boil prematurely and evaporate quickly, impacting normal engine operation.

[0003] Therefore, it is necessary to provide an engine to overcome the above-mentioned defects. Utility Model Content

[0004] The utility model aims to provide an engine, which improves the problem of local overheating and engine performance degradation caused by the reduction of the gap between the cylinder liner and the water jacket reinforcement plate above the engine body due to cylinder expansion.

[0005] According to one aspect of the present invention, an engine is provided, which includes a cylinder body, a cylinder liner, a piston, a connecting rod, and a reinforcement plate, with the water tank side of the engine as the upper part. The cylinder body is used to accommodate the cylinder liner, which is placed horizontally in the cylinder body. The piston is placed in the cylinder liner and reciprocates along the axial direction of the cylinder liner. The connecting rod is placed on the side of the piston away from the cylinder body along the axial direction of the cylinder liner and is connected to the piston to drive the piston to reciprocate. The reinforcement plate is formed by the cylinder body near the piston side extending inward along the axial direction of the cylinder liner and has a gap with the cylinder liner. The reinforcement plate is placed above the cylinder liner and is provided with through holes along the radial direction of the cylinder liner. The above solution improves the problem of local overheating caused by the reduction of the gap between the cylinder liner and the water jacket reinforcement plate above the engine body due to the expansion of the cylinder, avoids the problem of cooling water not flowing easily between the reinforcement plate and the cylinder liner, causing the cooling water to boil prematurely and evaporate quickly, thereby improving the heat dissipation effect of the engine at this position and ensuring the normal operation of the engine.

[0006] Preferably, the reinforcing plate is an arc-shaped plate, and the through-hole is located on the side of the arc-shaped plate that is closer to the piston along the axial direction of the cylinder liner. This solution helps prevent the engine body and the inner hole of the cylinder liner from being out of round, improving the engine body strength while also alleviating the problem of overheating at this location and ensuring effective cooling at this location.

[0007] Preferably, the cylinder body includes an outer cylinder wall and a partition wall disposed inside the cylinder body and connected to the outer cylinder wall, wherein the partition wall is provided with a connection port, which facilitates installation of the cylinder liner.

[0008] Preferably, the cylinder block further includes a first opening and a second opening, the first opening being located at the right end of the cylinder block, through which the cylinder liner passes; and the second opening being located above the cylinder block at a position corresponding to the cylinder liner, for admitting cooling water. This solution facilitates normal operation and cooling of the engine.

[0009] Preferably, the cylinder liner comprises a main body and an extension portion with an outer diameter smaller than that of the main body, and the extension portion is placed in the connecting port. The above solution helps to ensure the reasonable assembly of the cylinder liner.

[0010] Preferably, the main body, the outer cylinder wall and the partition wall divide the inner cavity of the cylinder body into a water cavity for accommodating cooling water, and the reinforcing plate is placed in the water cavity. The above solution helps to achieve cooling of the engine.

[0011] Preferably, an oil cavity adjacent to the water cavity is formed in the outer cylinder wall, the partition wall and the left side of the cylinder liner.

[0012] Preferably, the axial length of the reinforcement plate along the cylinder liner is greater than one-fifth of the axial length of the cylinder liner. Furthermore, the axial length of the reinforcement plate along the cylinder liner is greater than one-quarter of the axial length of the cylinder liner. This solution prevents out-of-roundness between the engine body and the inner bore of the cylinder liner, helps increase the strength of the engine body, and prevents deformation of the cylinder liner.

[0013] Preferably, a concave interface is provided at the connection port of the partition wall facing the right side, and the concave interface includes a contact wall arranged along the axial direction of the cylinder sleeve and a first end surface arranged perpendicular to the contact wall.

[0014] Preferably, the main body and the extension portion form a second end surface perpendicular to the axial direction of the cylinder sleeve, and the second end surface is arranged opposite to the first end surface.

[0015] Preferably, the invention further comprises a gasket sleeved on the cylinder liner, wherein the gasket is placed between the first end face and the second end face along the axial direction of the cylinder liner.

[0016] Preferably, a water tank is further included, which is placed above the cylinder body and connected to the water chamber to provide cooling water.

[0017] The utility model provides an engine comprising a cylinder block, a cylinder liner, a piston, a connecting rod, and a reinforcement plate. The reinforcement plate extends from the right side of the cylinder block to the left along the axis of the cylinder liner. The reinforcement plate is positioned above the cylinder liner, with a gap therebetween. The reinforcement plate is provided with through holes along the radial direction of the cylinder liner. This solution improves the problem of localized overheating caused by the reduction in the gap between the cylinder liner and the reinforcement plate of the water jacket above the engine block due to cylinder expansion. It also avoids problems such as cooling water not flowing smoothly between the reinforcement plate and the cylinder liner, which can lead to premature boiling and rapid evaporation of the cooling water. This improves the heat dissipation effect at this location of the engine and ensures normal engine operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0019] Figure 1 is a schematic diagram of the engine;

[0020] Figure 2 This is a top view of the engine;

[0021] Figure 3 It is a cross-sectional view of the local structure of the engine along the AA direction;

[0022] Figure 4 for Figure 3 A partial enlarged view of the middle M position;

[0023] Figure 5 for Figure 3 A local enlarged view of the N position in the figure.

[0024] Description of Figure Numbers:

[0025] 10. Cylinder block; 20. Cylinder liner; 30. Piston; 40. Connecting rod; 50. Gasket; 60. Water tank; 100. Engine; 101. Outer cylinder wall; 102. Partition wall; 103. Reinforcement plate; 201. Main body; 202. Extension portion; 202a. Second end face; 1011. First opening; 1012. Second opening; 1021. Connecting port; 1022. Concave port; 1022a. First end face; 1022b. Contact wall; 1031. Through hole; A1. Water chamber; A2. Oil chamber; A21. Gap. DETAILED DESCRIPTION

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. In addition, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one."

[0028] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0029] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0030] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0032] The embodiment for implementing the present application will be described based on the accompanying drawings. It should be noted that in the following description, the direction to the left of the straight line is referred to as "the left side of the engine" (refer to Figure 1 and Figure 2 ), set the right direction of the straight line to "right side of the engine" (refer to Figure 1 and Figure 2 ), set the direction of the straight line to "above the engine" (refer to Figure 2 ), set the direction of the straight line to "under the engine" (refer to Figure 2 ).

[0033] See also Figures 1 to 5As shown, this embodiment provides an engine 100, which includes a cylinder body 10, a cylinder liner 20, a piston 30, a connecting rod 40, a reinforcement plate 103, and a water tank 60, with the water tank 60 side of the engine 100 as the upper part. The cylinder body 10 is used to accommodate, the cylinder liner 20 is horizontally placed in the cylinder body 10, the piston 30 is placed in the cylinder liner 20 and reciprocates along the axial direction of the cylinder liner 20, the connecting rod 40 is placed on the side of the piston 30 away from the cylinder body 10 along the axial direction of the cylinder liner 20 and is connected to the piston 30 to drive the piston 30 to reciprocate, the reinforcement plate 103 is formed by the cylinder body 10 near the side of the piston 30 extending inward along the axial direction of the cylinder liner 20 and having a gap with the cylinder liner 20, the reinforcement plate 103 is placed above the cylinder liner 20, and the reinforcement plate 103 is provided with a through hole 1031 along the radial direction of the cylinder liner. The water tank 60 is placed above the cylinder body 10 and connected to the water cavity to provide cooling water. The above solution improves the problem of local overheating caused by the reduction of the gap A21 between the cylinder liner 20 and the water jacket reinforcement plate 103 above the engine body due to the cylinder expansion problem, avoids the problem that the cooling water between the reinforcement plate 103 and the cylinder liner 20 is difficult to flow, causing the cooling water to boil prematurely and evaporate quickly, thereby improving the heat dissipation effect of this position of the engine 100 and ensuring the normal operation of the engine 100.

[0034] See also Figures 2 to 4 As shown, the reinforcing plate 103 is an arc-shaped plate, and the through hole 1031 is located on the side of the arc-shaped plate that is relatively close to the piston 30 along the axial direction of the cylinder liner 20. This solution helps to avoid out-of-roundness between the engine body and the inner hole of the cylinder liner 20, improves the strength of the engine body, and improves the problem of overheating at this location, ensuring the cooling effect at this location. The axial length of the reinforcing plate 103 along the cylinder liner 20 is greater than one-fifth of the axial length of the cylinder liner 20; further, the axial length of the reinforcing plate 103 along the cylinder liner 20 is greater than one-quarter of the axial length of the cylinder liner 20. Avoiding out-of-roundness between the engine body and the inner hole of the cylinder liner 20 helps to increase the strength of the engine body and prevent deformation of the cylinder liner 20.

[0035] See also Figure 3 As shown, the cylinder body 10 includes an outer cylinder wall 101 and a partition wall 102 disposed inside the cylinder body 10 and connected to the outer cylinder wall 101 of the cylinder body 10 . The partition wall 102 is provided with a connection port 1021 to facilitate installation of the cylinder liner 20 .

[0036] The cylinder body 10 also includes a first opening 1011 and a second opening 1012. The first opening 1011 is located at the right end of the cylinder body 10, and the cylinder liner 20 is passed through the first opening 1011; the second opening 1012 is placed above the cylinder body 10 at a position corresponding to the cylinder liner 20 for the entry of cooling water, which helps to achieve normal operation and cooling of the engine 100.

[0037] See also Figure 5As shown, a concave interface 1022 is provided at the connection port 1021 of the partition wall 102 facing the right side. The concave interface 1022 includes a contact wall 1022b provided along the axial direction of the cylinder sleeve 20 and a first end surface 1022a provided perpendicular to the contact wall 1022b.

[0038] See also Figure 3 and Figure 5 As shown, the cylinder liner 20 includes a main body 201 and an extension portion having an outer diameter smaller than that of the main body 201. The extension portion is positioned within the connection port 1021. The main body 201, the outer cylinder wall 101, and the partition wall 102 divide the interior of the cylinder block 10 into a water chamber for accommodating cooling water. The outer cylinder wall 101, the partition wall 102, and the left side of the cylinder liner 20 form oil chambers A1 and A2 adjacent to the water chamber. A reinforcement plate 103 is positioned within the water chamber to help ensure proper assembly of the cylinder liner 20 while cooling the engine 100. The main body 201 and the extension portion form a second end surface 202 extension portion 202a perpendicular to the axial direction of the cylinder liner 20. The second end surface 202 extension portion 202a is positioned opposite the first end surface 1022a.

[0039] The engine 100 provided in this embodiment further includes a gasket 50 sleeved on the cylinder liner 20. The gasket 50 is placed between the first end surface 1022a and the extension portion 202a of the second end surface 202 along the axial direction of the cylinder liner 20, thereby helping to achieve sealing of the water cavity.

[0040] For example, during operation of this embodiment, the through-holes 1031 of the reinforcement plate 103 and the water cavity form a cooling water flow loop. Cooling water flows along the cylinder liner 20 and the water jacket reinforcement plate 103 into the deep gap A21 between the cylinder liner 20 and the water jacket. Due to factors such as the cooling water density, this portion of cooling water, "heated" by the cylinder liner 20, flows out through the through-holes 1031, thereby cooling the cylinder liner 20 and the water jacket reinforcement plate 103 above the engine body. This prevents overheating in this localized area, solves the problem of premature boiling of the engine 100, premature boiling of the cooling water, and rapid evaporation, and ensures normal operation of the engine 100. The opening in the water jacket reinforcement plate 103 of the engine 100 body can be drilled after the engine body is machined, or can be removed from the sand core casting during trimming before casting.

[0041] The present invention provides an engine 100 comprising a cylinder block 10, a cylinder liner 20, a piston 30, a connecting rod 40, and a reinforcement plate 103. The reinforcement plate 103 is formed by extending leftward from the right side of the cylinder block 10 along the axial direction of the cylinder liner 20. The reinforcement plate 103 is positioned above the cylinder liner 20, with a gap A21 between the reinforcement plate 103 and the cylinder liner 20. The reinforcement plate 103 is provided with through holes 1031 along the radial direction of the cylinder liner 20. This solution improves the problem of local overheating caused by the reduction of the gap A21 between the cylinder liner 20 and the reinforcement plate 103 of the water jacket above the engine block due to cylinder expansion, and avoids problems such as cooling water not flowing easily between the reinforcement plate 103 and the cylinder liner 20, causing the cooling water to boil prematurely and evaporate rapidly. This improves the heat dissipation effect at this location of the engine 100 and ensures the normal operation of the engine 100.

[0042] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments described above without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations of the present invention that fall within the scope of the appended claims and their equivalents.

Claims

1. An engine, with the water tank side of the engine as the upper side, characterized in that include: A cylinder body, the cylinder body is used to accommodate; a cylinder liner, the cylinder liner being disposed transversely within the cylinder body; A piston is disposed in the cylinder sleeve and reciprocates along the axial direction of the cylinder sleeve; a connecting rod, the connecting rod being disposed on a side of the piston axially away from the cylinder body and connected to the piston to drive the piston to reciprocate; A reinforcing plate is formed by the cylinder body close to the piston side and extending inwardly along the axial direction of the cylinder liner and having a gap with the cylinder liner. The reinforcing plate is placed above the cylinder liner and is provided with a through hole along the radial direction of the cylinder liner.

2. An engine according to claim 1, characterized in that: The reinforcing plate is an arc-shaped plate, and the through hole is located on a side of the arc-shaped plate relatively close to the piston along the axial direction of the cylinder sleeve.

3. An engine according to claim 2, characterized in that: The cylinder body includes an outer cylinder wall and a partition wall disposed inside the cylinder body and connected to the outer cylinder wall. The partition wall is provided with a connection port.

4. An engine according to claim 3, characterized in that: The cylinder sleeve includes a main body and an extension portion with an outer diameter smaller than that of the main body, and the extension portion is placed in the connecting port.

5. An engine according to claim 4, characterized in that: The main body, the outer cylinder wall and the partition wall divide the inner cavity of the cylinder body into a water cavity for accommodating cooling water, and the reinforcing plate is placed in the water cavity.

6. An engine according to claim 5, characterized in that: The axial length of the reinforcing plate along the cylinder liner is greater than one fifth of the axial length of the cylinder liner.

7. An engine according to claim 6, characterized in that: A concave interface is provided at the connection port of the partition wall facing the right side. The concave interface includes a contact wall arranged along the axial direction of the cylinder sleeve and a first end surface arranged perpendicular to the contact wall.

8. An engine according to claim 7, characterized in that: The main body and the extension portion form a second end surface perpendicular to the axial direction of the cylinder sleeve, and the second end surface is arranged opposite to the first end surface.

9. An engine according to claim 8, characterized in that: It also includes a gasket sleeved on the cylinder liner, and the gasket is placed between the first end surface and the second end surface along the axial direction of the cylinder liner.

10. An engine according to claim 9, characterized in that: It also includes a water tank, which is placed above the cylinder body and connected to the water chamber to provide cooling water.

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