Diesel engine body

Abstract

The utility model discloses a diesel engine body which comprises an engine body, the front end of the engine body is provided with front end gear train fixing positions, the front end gear train fixing positions are distributed towards the two sides of the width of the engine body, the position of an oil pump gear train on one side is checked and determined from the center of a crankshaft, and the position of a function configuration gear train on the other side is checked and determined from the center of the crankshaft; a rear end bearing shell installation position is arranged at the rear end of the machine body, bolt fastening positions at the rear end are arranged according to the machine head shape of the shell, meanwhile, hollowed-out weight reduction design is conducted, and a water cavity with the volume expanded is formed around a cylinder hole of the machine body. The problems that after the power of an existing diesel engine body is increased, the engine oil cooling effect is poor, the heat balance effect is poor, and the high-temperature condition easily occurs due to the small water cavity volume are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a diesel engine body. Background Art

[0002] The engine body is an extremely important component of the engine. It determines the distribution position and functional output of external and internal structural parts. The greater the power required, the more difficult it is to achieve the overall thermal balance of the engine. The existing engine market competition is becoming increasingly fierce, and cost pressure is also increasing. The increase in power requires the capacity of the oil module to be gradually improved.

[0003] Currently, the power requirements of naturally aspirated engines on the market are getting higher and higher, resulting in the internal structure of the engine being unable to keep up with the changes in power increase, the oil cooling effect being unable to keep up, the water cavity volume of the engine being small, and the thermal balance effect being poor, resulting in high temperature problems after the power increase. Utility Model Content

[0004] The utility model aims to provide a diesel engine body, which solves the problems that the oil cooling effect cannot keep up with the increase of power of the existing diesel engine body, the thermal balance effect is poor, and the water cavity volume is small and high temperature is easy to occur.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A diesel engine body comprises a body, wherein a front end gear train fixing position is arranged at the front end of the body, and the front end gear train fixing position is distributed on both sides of the body width, and an oil pump gear train position on one side is determined from the center of the crankshaft, and a functional configuration gear train position on the other side is determined from the center of the crankshaft; a rear end load-bearing casing installation position is arranged at the rear end of the body, and the bolt fastening position of the rear end is arranged according to the shape of the casing head, and a hollow weight reduction design is made at the same time, and a water cavity with volume expansion is arranged around the cylinder hole of the body.

[0007] In the above scheme, the calculation from the crankshaft center to determine the position of the oil pump gear train on one side specifically refers to taking the crankshaft gear as the driving center, confirming the center distance on one side according to parameters such as gear module, number of teeth, displacement coefficient, and determining the installation position of the oil pump and the oil pump gear. The so-called functional configuration includes functional configuration structures such as hydraulic pumps or air pumps. Therefore, the calculation from the crankshaft center to determine the position of the functional configuration gear train on the other side specifically refers to taking the crankshaft gear as the driving center, and determining the specific position on the other side according to the size of the hydraulic pump functional interface or the air pump functional interface, combined with information parameters such as the outer boundary of the engine, the direction of the pipeline, and the layout of the entire vehicle, thereby reversely deducing the position of the idler wheel on the engine body and considering the gear train parameter requirements. First, this scheme sets the front end gear train fixed position and the front The oil pump gear train is positioned so that the oil pump is placed in front. The design increases the oil pump flow, enhances the internal oil cooling effect, and improves the reliability of the engine body. Then, the transmission ratio is adjusted as much as possible according to the functional interfaces such as the front-end hydraulic pump or the air pump, and the structural design is increased to make the overall structure of the engine body more compact. Finally, a water cavity with expanded volume is provided around the cylinder bore of the body. The water cavity is enlarged. Specifically, the water cavity with expanded volume expands outward around the cylinder bore as the center and extends along the depth direction of the cylinder bore, so that the water cavity contacts the cylinder bore to the greatest extent, thereby improving the thermal balance effect of the engine and reducing the high temperature problem of the engine. The hollow area in the hollow design realizes the lightweight of the body to the greatest extent. At the same time, the hollow area is not processed, which saves processing costs and prevents rust.

[0008] As a further preferred embodiment of the present invention, a lubrication and cooling oil passage is arranged at the fixed position of the front end gear train according to the gear train arrangement, and the lubrication and cooling oil passage is connected to the camshaft auxiliary oil passage and the crankshaft lubrication oil passage.

[0009] The diameter of the lubrication and cooling oil channel is selected based on the cooling and lubrication effect requirements and the tool processing implementation method.

[0010] As a further preferred embodiment of the present invention, a gear train positioning hole and a peripheral gear chamber positioning hole are provided at the front end of the machine body.

[0011] Ensure the accuracy of gear train distribution and the precise determination of the center distance of the gear room related interfaces.

[0012] As a further preferred embodiment of the present invention, the front end of the machine body has an avoidance contour design.

[0013] The so-called avoidance contour design means that after the boundary contour is determined, the design is carried out by comprehensively considering factors such as the structural compactness of the engine and the boundary of the entire vehicle and the direction of the pipeline. Such a design can make the overall layout structure of the engine more compact.

[0014] As a further preferred embodiment of the present invention, a gear train positioning hole and a peripheral load-bearing shell positioning hole are provided at the rear end of the machine body.

[0015] Ensure the stability of the shell and the strength after assembly.

[0016] As a further preferred embodiment of the present invention, a rotation speed sensor installation position is provided on the side of the machine body.

[0017] Reduce the difficulty of sensor layout and save the cost of sensor-related structures.

[0018] As a further preferred embodiment of the present invention, reinforcing ribs are arranged between the cylinder hole and the outer frame of the machine body to connect the inner and outer frames into an integral structure.

[0019] Compared with the prior art, the utility model can achieve at least one of the following beneficial effects:

[0020] 1. In the above scheme, the calculation from the crankshaft center to determine the position of the oil pump gear train on one side specifically refers to taking the crankshaft gear as the driving center, and confirming the center distance on one side according to parameters such as gear module, number of teeth, displacement coefficient, etc., to determine the installation position of the oil pump and the oil pump gear. The so-called functional configuration includes functional configuration structures such as hydraulic pump or air pump. Therefore, the calculation from the crankshaft center to determine the position of the functional configuration gear train on the other side specifically refers to taking the crankshaft gear as the driving center, and determining the specific position on the other side according to the size of the hydraulic pump functional interface or the air pump functional interface, combined with the engine outer boundary, pipeline direction, vehicle layout and other information parameters, thereby reversing the position of the idler gear on the engine body, and taking the gear train into consideration at the same time. Parameter requirements: First, this solution sets the front-end gear train fixed position and the front oil pump gear train position on the body, so that the oil pump is placed in front. The design increases the oil pump flow, enhances the internal oil cooling effect, and improves the reliability of the engine body. Then, the transmission ratio is adjusted as much as possible according to the functional interfaces such as the front-end hydraulic pump or the air pump, and the structural design is increased to make the overall structure of the engine body more compact. Finally, a water cavity with expanded volume is set around the cylinder hole of the body. The increase in the water cavity improves the thermal balance effect of the engine and reduces the high temperature problem of the engine. The hollow area in the hollow design realizes the lightweight of the body to the greatest extent. At the same time, the hollow area is not processed, which saves processing costs and prevents rust.

[0021] 2. The gear train positioning holes and peripheral gear chamber positioning holes set at the front end of the body ensure the accuracy of the gear train distribution and the accurate determination of the center distance of the gear chamber related interface.

[0022] 3. The design is based on comprehensive consideration of factors such as the structural compactness of the engine, the boundaries of the vehicle, and the direction of the pipelines. This design can make the overall layout of the engine more compact.

[0023] 4. The rear end of the machine body is provided with a gear train positioning hole and a peripheral load-bearing shell positioning hole to ensure the stability of the shell and the strength after assembly.

[0024] 5. It reduces the difficulty of sensor layout and saves the cost of sensor-related structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the installation position layout of the front end of the engine body of the utility model;

[0026] Figure 2 It is a schematic diagram of the installation position layout of the rear end of the engine body of the utility model;

[0027] Figure 3 It is a schematic diagram of the arrangement of the lubricating oil passage of the engine body of the utility model;

[0028] Figure 4 It is a schematic diagram of the side structure of the engine body of the utility model;

[0029] Figure 5 It is a schematic diagram of the water cavity structure of the engine body of the utility model.

[0030] 10-lubricating cooling oil channel at the front end of the body; 11-hollow weight reduction area at the front and rear ends of the body; 12-gear train positioning hole at the front end of the body; 13-positioning hole of the outer gear chamber at the front end of the body; 14-gear train positioning hole at the rear end of the body; 15-positioning hole of the shell at the rear end of the body, 16-body avoidance contour structure; 17-sensor installation structure. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Specific embodiment 1:

[0038] Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 A diesel engine body is shown, including a body, wherein a front end gear train fixing position is provided at the front end of the body, and the front end gear train fixing position is distributed on both sides of the body width, one side of the oil pump gear train position is determined from the center of the crankshaft, and the other side of the functional configuration gear train position is determined from the center of the crankshaft; a rear end load-bearing shell installation position is provided at the rear end of the body, and the rear end bolt fastening position is arranged according to the shape of the shell's head, and a hollow weight reduction design is made at the same time, and a water cavity with volume expansion is provided around the cylinder hole of the body.

[0039] In the above scheme, the calculation from the crankshaft center to determine the position of the oil pump gear train on one side specifically refers to taking the crankshaft gear as the driving center, confirming the center distance on one side according to parameters such as gear module, number of teeth, displacement coefficient, and determining the installation position of the oil pump and the oil pump gear. The so-called functional configuration includes functional configuration structures such as hydraulic pumps or air pumps. Therefore, the calculation from the crankshaft center to determine the position of the functional configuration gear train on the other side specifically refers to taking the crankshaft gear as the driving center, and determining the specific position on the other side according to the size of the hydraulic pump functional interface or the air pump functional interface, combined with information parameters such as the outer boundary of the engine, the direction of the pipeline, and the layout of the entire vehicle, thereby reversely deducing the position of the idler gear on the engine body, and taking the gear train parameters into consideration at the same time. According to several requirements, first of all, this scheme sets the front-end gear train fixed position and the front oil pump gear train position on the engine body, so that the oil pump is placed in front. The design improves the oil pump flow, enhances the internal oil cooling effect, and improves the reliability of the engine body. Then, the transmission speed ratio is adjusted as much as possible according to the functional interfaces such as the front-end hydraulic pump or the air pump, and the structural design is increased to make the overall structure of the engine body more compact. Finally, a water cavity with expanded volume is set around the cylinder hole of the engine body. The enlargement of the water cavity improves the thermal balance effect of the engine and reduces the high temperature problem of the engine. The hollow area in the hollow design realizes the lightweight of the engine body to the greatest extent. At the same time, the hollow area is not processed, which saves processing costs and prevents rust. Specific embodiment 2:

[0041] This embodiment further illustrates the front end gear train fixing position based on the specific embodiment 1, wherein the front end gear train fixing position is provided with a lubricating cooling oil passage according to the gear train arrangement, and the lubricating cooling oil passage connects the camshaft auxiliary oil passage and the crankshaft lubricating oil passage.

[0042] The diameter of the lubrication and cooling oil channel is selected based on the cooling and lubrication effect requirements and the tool processing implementation method. Specific embodiment 3:

[0044] This embodiment further illustrates the machine body on the basis of the specific embodiment 1, wherein a gear train positioning hole and a peripheral gear chamber positioning hole are provided at the front end of the machine body.

[0045] Ensure the accuracy of gear train distribution and the accurate determination of the center distance of the gear room related interface. Specific embodiment 4:

[0047] This embodiment further describes the machine body on the basis of the specific embodiment 1, and the front end of the machine body has an avoidance contour design.

[0048] The so-called avoidance contour design means that after the boundary contour is determined, the design is carried out by comprehensively considering factors such as the structural compactness of the engine and the boundary of the entire vehicle and the direction of the pipeline. Such a design can make the overall layout structure of the engine more compact. Specific embodiment 5:

[0050] This embodiment further illustrates the machine body on the basis of the specific embodiment 1, wherein a gear train positioning hole and a peripheral load-bearing shell positioning hole are provided at the rear end of the machine body.

[0051] Ensure the stability of the shell and the strength after assembly. Specific embodiment 6:

[0053] This embodiment further describes the machine body on the basis of the specific embodiment 1, and a rotation speed sensor installation position is provided on the side of the machine body.

[0054] Reduce the difficulty of sensor layout and save the cost of sensor-related structures. Specific embodiment 7:

[0056] This embodiment further illustrates the machine body on the basis of the specific embodiment 1. Reinforcing ribs are arranged between the cylinder hole and the outer frame of the machine body to connect the inner and outer frames into an integral structure.

[0057] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A diesel engine body, characterized in that: It includes a body, wherein a front end gear train fixing position is provided at the front end of the body, and the front end gear train fixing position is distributed on both sides of the body width, and the position of the oil pump gear train on one side is determined from the center of the crankshaft, and the position of the functional configuration gear train on the other side is determined from the center of the crankshaft; a rear end load-bearing shell installation position is provided at the rear end of the body, and the bolt fastening position of the rear end is arranged according to the shape of the shell's head, and a hollow weight reduction design is made at the same time, and a water cavity with volume expansion is provided around the cylinder hole of the body.

2. The diesel engine body according to claim 1, characterized in that: The front end gear train fixed position is provided with a lubricating and cooling oil passage according to the gear train arrangement, and the lubricating and cooling oil passage is connected to the camshaft auxiliary oil passage and the crankshaft lubricating oil passage.

3. The diesel engine body according to claim 1, characterized in that: The front end of the machine body is provided with a gear train positioning hole and a peripheral gear chamber positioning hole.

4. The diesel engine body according to claim 1, characterized in that: The front end of the machine body is designed with an avoidance contour.

5. The diesel engine body according to claim 1, characterized in that: The rear end of the machine body is provided with a gear train positioning hole and a peripheral load-bearing shell positioning hole.

6. The diesel engine body according to claim 1, characterized in that: A rotation speed sensor installation position is arranged on the side of the machine body.

7. The diesel engine body according to claim 1, characterized in that: Reinforcing ribs are arranged between the cylinder hole and the outer frame of the machine body to connect the inner and outer frames into an integral structure.

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