Engine

Abstract

The engine comprises a cylinder cover, a crankcase and a connecting bolt, the cylinder cover comprises a cylinder hole and a cylinder sleeve which is arranged in the cylinder hole and integrally arranged with the cylinder cover, an opening of the cylinder hole faces the direction, and the lower end face of the cylinder sleeve is lower than the plane where the lower end of the cylinder hole is located; the crankcase is arranged below the cylinder cover and comprises a cylinder sleeve mounting hole formed in the top and a front end face formed in the front, and the lower end of the cylinder sleeve is arranged in the cylinder sleeve mounting hole; the two ends of the connecting bolt are connected to the cylinder cover and the crankcase respectively. The engine, the cylinder cover and the cylinder sleeve are integrally arranged, so that the reliability of the cylinder cover is improved, the risk of cylinder gasket failure is reduced, meanwhile, the sealing performance and the structural strength of the whole engine body are improved through the matched design, and the cost of the whole engine is saved.

Description

Technical Field

[0001] This utility model relates to the field of power machinery, and in particular to an engine. Background Technology

[0002] Traditional air-cooled diesel engine blocks consist of a crankcase and cylinder liners, typically formed as a single unit using die casting. The cylinder head is manufactured using casting. The engine block and cylinder head are bolted together and sealed with gaskets. Due to the complex operating conditions of diesel engines, cylinder head gasket failure is a common problem. Furthermore, the unibody design requires complete replacement after damage, resulting in high maintenance costs. To facilitate maintenance, some manufacturers have developed split-type engine blocks, separating the cylinder liners from the crankcase. The cylinder head, cylinder liners, and crankcase are assembled into a single unit, allowing for partial replacement based on damage. However, this structure suffers from insufficient overall strength, affecting engine reliability. Additionally, the need for gaskets between the cylinder liners and crankcase increases potential oil leaks, making it difficult to balance structural stability and sealing performance.

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

[0004] The purpose of this invention is to provide an engine that, through the design of the engine block, improves the overall structural stability and reliability while ensuring the engine block's sealing performance, reduces cylinder head gasket blow-off, saves costs, and facilitates later maintenance.

[0005] According to one aspect of this utility model, an engine is provided, including a cylinder head, a crankcase, and connecting bolts. The cylinder head includes a cylinder bore and a cylinder liner integrally formed with the cylinder head and disposed within the cylinder bore. The cylinder bore opening faces in a specific direction, and the lower end face of the cylinder liner is lower than the plane containing the lower end of the cylinder bore. The crankcase is disposed below the cylinder head and includes a cylinder liner mounting hole at the top and a front end face at the front. The lower end of the cylinder liner is disposed within the cylinder liner mounting hole. The two ends of the connecting bolts are respectively connected to the cylinder head and the crankcase. This integrated cylinder head and cylinder liner design improves cylinder head reliability, reduces the risk of cylinder head gasket failure, and enhances the sealing performance and structural strength of the entire engine body through the aforementioned design, while also saving overall engine costs.

[0006] Preferably, the cylinder head is made of aluminum and the cylinder liner is made of boron cast iron. The cylinder liner is cast integrally with the cylinder head as an insert, which has high overall reliability and can eliminate the need for traditional cylinder head gaskets, reducing the risk of cylinder head gasket failure and saving the overall machine cost.

[0007] Preferably, the engine also includes a gasket placed between the cylinder head and the crankcase. This further improves the sealing effect.

[0008] Preferably, the cylinder head also includes a cooling air duct disposed inside the cylinder head, the cooling air duct being positioned above the cylinder bore.

[0009] Preferably, the cylinder head further includes heat sinks located outside the cylinder head, the heat sinks including at least six first heat sinks located on the outer periphery of the cylinder liner and arranged in a horizontal direction.

[0010] Preferably, the heat sink further includes a second heat sink positioned above the first heat sink.

[0011] Preferably, the cylinder head also includes an injector mounting hole located above the cylinder bore and communicating with the cylinder bore.

[0012] Preferably, the crankcase further includes a crankshaft mounting hole for accommodating the crankshaft, a fuel injection pump mounting hole located on the left side of the crankcase, and a motor mounting position located on the right side of the crankshaft.

[0013] Preferably, the engine further includes a cylinder head cover fixed to the upper end of the cylinder head and a crankcase side cover fixed to the front end of the crankcase.

[0014] Preferably, an engine further includes a starter motor, a fuel injection pump, and a fuel injector, wherein the starter motor is located in a motor mounting position, the fuel injection pump is located in a fuel injection pump mounting hole, and the fuel injector is located in a fuel injector mounting hole.

[0015] The engine provided by this utility model has cylinder liners and cylinder heads integrally cast. The lower end of the cylinder liner is located inside the crankcase and is on a different plane from the upper end of the crankcase. The cylinder head has high reliability and can eliminate the need for traditional cylinder head gaskets, reducing the risk of cylinder head gasket failure while ensuring sealing performance. The heat sink structure also helps to improve strength and has good reliability. At the same time, it saves the overall machine cost. Compared with traditional air-cooled engine blocks, it has strong replaceability and is convenient for later replacement and maintenance. Attached Figure Description

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0017] Figure 1 This is a three-dimensional schematic diagram of the engine's structural components.

[0018] Figure 2 This is a sectional view of the cylinder head;

[0019] Figure 3 This is a schematic diagram of the engine as a whole.

[0020] Explanation of icon numbers:

[0021] 10. Cylinder head; 20. Connecting bolts; 30. Sealing gasket; 40. Crankcase; 50. Injector; 60. Starter motor; 70. Cylinder head cover; 80. Injection pump; 90. Crankcase side cover; 101. Injector mounting hole; 102. Cooling duct; 103. Radiator fins; 1031. First radiator fin; 1032. Second radiator fin; 104. Cylinder bore; 105. Cylinder liner; 401. Cylinder liner mounting hole; 402. Front end face; 403. Injection pump mounting hole; 404. Motor mounting position; 100. Engine. Detailed Implementation

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0024] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0025] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0028] The embodiments for carrying out this application will be described based on the accompanying drawings. It should be noted that, in the following description, the direction of F is defined as "front of the fuselage" (refer to...). Figure 1 and Figure 3 Set the direction of B to "rear of the machine" (refer to...). Figure 1 and Figure 3 Set the direction of L to "left side of the machine" (refer to...). Figure 1 Set the direction of R to "right side of the machine" (refer to...). Figure 1 ).

[0029] See Figures 1 to 3 As shown, this embodiment provides an engine 100, including a cylinder head 10, a crankcase 40, and connecting bolts 20. The cylinder head 10 includes a cylinder bore 104 and a cylinder liner 105 integrally formed with the cylinder head 10 and placed within the cylinder bore 104. The opening of the cylinder bore 104 faces the same direction, and the lower end face of the cylinder liner 105 is lower than the plane containing the lower end of the cylinder bore 104. The crankcase 40 is located below the cylinder head 10 and includes a cylinder liner mounting hole 401 at the top and a front end face 402 at the front. The lower end of the cylinder liner 105 is located in the cylinder liner mounting hole 401. The two ends of the connecting bolts 20 are respectively connected to the cylinder head 10 and the crankcase 40. This integral design of the cylinder head 10 and cylinder liner 105 improves the reliability of the cylinder head 10, reduces the risk of cylinder head gasket failure, and improves the sealing performance and structural strength of the entire engine body through the above-mentioned design, thus saving overall engine costs.

[0030] The cylinder head 10 is made of aluminum, and the cylinder liner 105 is made of boron cast iron. The cylinder liner 105 is integrally cast with the cylinder head 10 as an insert, which has high overall reliability and can eliminate the need for traditional cylinder head gaskets, reducing the risk of cylinder head gasket failure and saving the overall cost of the engine.

[0031] join Figure 1 As shown, the engine 100 also includes a gasket 30 placed between the cylinder head 10 and the crankcase 40 to further improve the sealing effect.

[0032] The cylinder head 10 also includes a cooling air duct 102 located inside the cylinder head 10 and a heat sink 103 located outside the cylinder head 10. The cooling air duct 102 is located above the cylinder bore 104 and is used to achieve heat dissipation by allowing the flow of cooling air. The heat sink 103 includes at least six first heat sinks 1031 located on the outer periphery of the cylinder liner 105 and arranged in a horizontal direction. The heat sink 103 also includes second heat sinks 1032 located above the first heat sinks 1031. The second heat sinks 1032 are arranged both horizontally and vertically to improve the heat dissipation effect.

[0033] The crankcase 40 also includes a crankshaft mounting hole for accommodating the crankshaft, an oil pump mounting hole located on the left side of the crankcase 40, and a motor mounting position 404 located on the right side of the crankshaft.

[0034] See Figure 2 As shown, the cylinder head 10 also includes an injector mounting hole 101 located above the cylinder bore 104 and communicating with the cylinder bore 104.

[0035] See Figure 3 As shown, the engine 100 also includes a cylinder head cover 70 fixed to the upper end of the cylinder head 10 and a crankcase side cover 90 fixed to the front end of the crankcase 40.

[0036] The engine 100 provided in this embodiment also includes a starter motor 60, a fuel injection pump 80, and a fuel injector 50. The starter motor 60 is located in the motor mounting position 404, the fuel injection pump 80 is located in the fuel injection pump mounting hole 403, and the fuel injector 50 is located in the fuel injector mounting hole 101.

[0037] The engine 100 provided by this utility model has a cylinder liner 105 and a cylinder head 10 integrally cast. The lower end of the cylinder liner 105 is located inside the crankcase 40 and is on a different plane from the upper end surface of the crankcase 40. The cylinder head 10 has high reliability and can eliminate the need for traditional cylinder head gaskets, reducing the risk of cylinder head gasket failure while ensuring sealing performance. The structure of the heat sink 103 also helps to improve strength and has good reliability. At the same time, it saves the overall machine cost. Compared with traditional air-cooled engine blocks, it has strong replaceability and is convenient for later replacement and maintenance.

[0038] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. An engine characterized by, include: A cylinder head, comprising a cylinder bore and a cylinder sleeve integrally formed therewith and placed within the cylinder bore, wherein the opening of the cylinder bore faces a certain direction and the lower end face of the cylinder sleeve is lower than the plane containing the lower end of the cylinder bore. A crankcase, the crankcase being located below the cylinder head, the crankcase including a cylinder liner mounting hole at the top and a front end face at the front, the lower end of the cylinder liner being located in the cylinder liner mounting hole; Connecting bolts, the two ends of which are respectively connected to the cylinder head and the crankcase.

2. An engine as claimed in claim 1 wherein, It also includes a sealing gasket placed between the cylinder head and the crankcase.

3. An engine as claimed in claim 2, wherein, The cylinder head also includes a cooling air duct disposed inside the cylinder head, the cooling air duct being positioned above the cylinder bore.

4. An engine as claimed in claim 3, wherein The cylinder head also includes heat sinks located outside the cylinder head, the heat sinks including at least six first heat sinks located on the outer periphery of the cylinder liner and arranged in a horizontal direction.

5. An engine as claimed in claim 4, wherein The heat sink also includes a second heat sink positioned above the first heat sink.

6. An engine as claimed in claim 5 wherein, The cylinder head also includes an injector mounting hole located above the cylinder bore and communicating with the cylinder bore.

7. An engine as claimed in claim 6 wherein, The crankcase also includes a crankshaft mounting hole for accommodating the crankshaft, a fuel injection pump mounting hole located on the left side of the crankcase, and a motor mounting position located on the right side of the crankshaft.

8. An engine as claimed in claim 7, wherein It also includes a cylinder head cover fixed to the upper end of the cylinder head and a crankcase side cover fixed to the front end of the crankcase.

9. An engine as claimed in claim 8, wherein It also includes a starter motor, a fuel injection pump, and fuel injectors. The starter motor is located in the motor mounting position, the fuel injection pump is located in the fuel injection pump mounting hole, and the fuel injectors are located in the fuel injector mounting hole.

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