Cylinder block and vehicle

Abstract

The utility model discloses an air cylinder body and a vehicle, the air cylinder body is provided with a cylinder hole, a crankshaft cavity and an oil return channel, and the cylinder hole and the crankshaft cavity are communicated and are both separated from the oil return channel; wherein the oil return channel comprises a first sub-oil channel and a second sub-oil channel which are communicated with each other, the first sub-oil channel is located on the outer side of the cylinder hole, and the second sub-oil channel is located on the outer side of the crankshaft cavity. According to the air cylinder body, the overall strength and rigidity of the air cylinder body can be greatly improved under the condition that reinforcing ribs are not added, so that the overall NVH performance of the air cylinder body is improved, noise around a crankshaft cavity and an engine is reduced, the quietness of a whole automobile is improved, user experience is improved, the weight of the air cylinder body and the number of parts are effectively reduced, and the cost is reduced. The lightweight design is realized, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of cylinders, in particular to a cylinder body and a vehicle with the cylinder body. Background Art

[0002] Nowadays, with the improvement of living standards and the pursuit of quality life, consumers have put forward higher requirements on the quietness of automobile engines. The high-speed rotation of the crankshaft brings high-energy excitation, but also makes the noise around the engine more and more obvious, which in turn has an adverse effect on the quietness of the entire vehicle.

[0003] In order to reduce the radiation noise around the engine, the current method is to add cross ribs on both sides of the engine block or increase the thickness of the top and bottom plates to improve the NVH performance, and even to improve the NVH performance of the entire vehicle by adding a sound insulation cover. This not only increases the weight, but also increases the complexity of the types of parts, which has brought many adverse effects on the assembly and maintenance of the vehicle, and there is room for improvement. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a cylinder block, which can greatly improve the overall strength and rigidity of the cylinder block without adding reinforcing ribs, thereby improving the overall NVH performance of the cylinder block, reducing the noise of the crankshaft cavity and the surrounding of the engine, thereby improving the quietness of the whole vehicle, improving the user experience, and effectively reducing the weight and number of parts of the cylinder block, achieving lightweight design and reducing costs.

[0005] According to the cylinder block of the embodiment of the utility model, the cylinder block is provided with a cylinder hole, a crankshaft chamber and an oil return passage, the cylinder hole is connected with the crankshaft chamber and is separated from the oil return passage; wherein the oil return passage includes a first sub-oil passage and a second sub-oil passage which are connected with each other, the first sub-oil passage is located on the outside of the cylinder hole, and the second sub-oil passage is located on the outside of the crankshaft chamber.

[0006] According to the cylinder block of the embodiment of the utility model, by arranging the first sub-oil channel and the second sub-oil channel which are interconnected at specific positions, the overall strength and rigidity of the cylinder block are greatly improved without adding reinforcing ribs, thereby improving the overall NVH performance of the cylinder block, reducing the noise of the crankshaft chamber and the surrounding of the engine, thereby improving the quietness of the whole vehicle and improving the user experience. The first sub-oil channel is arranged on the outside of the cylinder hole, which makes full use of the space of the cylinder block, improves the space utilization efficiency, reduces the arrangement of reinforcing ribs, reduces the use of components such as sound insulation covers, and effectively reduces the weight of the cylinder block and the number of components.

[0007] According to the cylinder block of some embodiments of the utility model, the cylinder hole, the crankshaft chamber and the oil return passage are all multiple and distributed one by one, the multiple cylinder holes are distributed at intervals along the first direction, and in the first direction, a separation area is formed between two adjacent cylinder holes and on the outside of the outermost cylinder hole; the first sub-oil passage and the corresponding separation area are distributed opposite to each other along the second direction, and the second sub-oil passage and the corresponding crankshaft chamber are distributed opposite to each other along the second direction.

[0008] According to the cylinder block of some embodiments of the present invention, the cylinder block is further provided with a cylinder head bolt hole, and the cylinder head bolt hole is located between the first sub-oil channel and the corresponding separation area.

[0009] According to the cylinder block of some embodiments of the present invention, a cooling water jacket is formed between the first sub-oil channel and two adjacent cylinder holes in the corresponding separation area, and the cooling water jacket is distributed along the circumference of the corresponding cylinder hole.

[0010] According to the cylinder block of some embodiments of the present invention, the width of the oil return passage in the first direction is a and the height in the second direction is b, and the following relationship is satisfied: 1.5≤a / b≤2.5.

[0011] According to the cylinder block of some embodiments of the present invention, the height of the oil return passage in the second direction is b, and satisfies: 10 mm ≤ b ≤ 20 mm.

[0012] According to the cylinder block of some embodiments of the utility model, the cylinder holes, the crankshaft chambers and the oil return passages are all divided into two groups; wherein the two groups of the cylinder holes are spaced apart and distributed along the second direction, the two groups of the crankshaft chambers are spaced apart and distributed along the second direction, and the two groups of the oil return passages are spaced apart and distributed along the second direction.

[0013] According to the cylinder block of some embodiments of the present invention, in the projection along the second direction, the two groups of multiple cylinder holes are staggeredly distributed along the first direction.

[0014] According to the cylinder block of some embodiments of the present invention, the oil return passages corresponding to the two groups of cylinder holes are respectively located in areas where the two groups of cylinder holes are away from each other.

[0015] The utility model also provides a vehicle.

[0016] The vehicle according to the embodiment of the utility model is provided with a cylinder block according to any one of the above embodiments.

[0017] The advantages of the vehicle and the above-mentioned cylinder block over the prior art are the same and will not be described in detail here.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a front view of a cylinder block according to an embodiment of the utility model;

[0021] Figure 2 The cross section of the cylinder block according to the embodiment of the utility model Figure 1 ;

[0022] Figure 3 The cross section of the cylinder block according to the embodiment of the utility model Figure 2 ;

[0023] Figure 4 The cross section of the cylinder block according to the embodiment of the utility model Figure 3 ;

[0024] Figure 5 yes Figure 2 Enlarged view of point A in the middle.

[0025] Reference numerals:

[0026] Cylinder block 100,

[0027] Cylinder bore 1, crankshaft chamber 2, oil return passage 3, first sub-oil passage 31, second sub-oil passage 32, partition area 4, cylinder head bolt hole 5, cooling water jacket 6. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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.

[0031] Unless otherwise specified, the front-to-back direction in the present application is the longitudinal direction of the vehicle, that is, the X direction; the left-right direction is the lateral direction of the vehicle, that is, the Y direction; and the up-down direction is the vertical direction of the vehicle, that is, the Z direction.

[0032] Reference below Figure 1-Figure 5 The cylinder block 100 according to the embodiment of the utility model is described. The cylinder block 100 can greatly improve the overall strength and rigidity of the cylinder block 100 without adding reinforcing ribs, thereby improving the overall NVH performance of the cylinder block 100, reducing the noise of the crankshaft chamber 2 and the surrounding of the engine, thereby improving the quietness of the entire vehicle, improving the user experience, and effectively reducing the weight and number of components of the cylinder block 100, achieving a lightweight design, and reducing costs.

[0033] like Figure 1-Figure 5 As shown, the cylinder block 100 according to the embodiment of the utility model is provided with a cylinder hole 1, a crank chamber 2 and an oil return passage 3.

[0034] The cylinder block 100 is the main body of the engine, connecting the cylinders and the crankcase together, and is the supporting frame for installing the piston, crankshaft, and other parts and accessories. The cylinder block 100 must withstand the huge pressure generated during the combustion process, as well as various forces generated by the high-speed reciprocating motion of the piston and the rotation of the crankshaft, and is also subject to the hot and cold effects of high-temperature, high-pressure gas and coolant. Therefore, the cylinder block 100 needs to have sufficient strength and rigidity, good heat resistance and wear resistance, and good NVH performance.

[0035] The cylinder hole 1 in the cylinder block 100 is mainly used to accommodate the space for the reciprocating motion of the piston. During the movement of the engine, the piston moves up and down in the cylinder hole 1 to form a combustion space. The crankshaft chamber 2 is located at the lower part of the cylinder block 100 and is used to accommodate and install components such as the crankshaft and connecting rod. It is the space in the crankcase. The crankshaft is the main moving part of the engine. It is connected to the piston through a connecting rod to convert the reciprocating motion of the piston into rotational motion, thereby realizing power transmission between the piston and the crankshaft.

[0036] The oil return passage 3 is a passage for recovering the engine oil. After lubricating various engine components, the lubricating oil flows back through the oil return passage 3 to complete the recycling of the lubricating oil, thereby ensuring the normal operation and heat dissipation of the engine. Among them, the cylinder hole 1 is connected to the crankshaft chamber 2 and both are separated from the oil return passage 3. In other words, the piston of the cylinder hole 1 can be connected to the crankshaft in the crankshaft chamber 2, and the lubricating oil in the crankshaft can lubricate the piston. Separating the cylinder hole 1 and the crankshaft chamber 2 from the oil return passage 3 can avoid excessive lubricating oil entering the crankshaft chamber 2, thereby ensuring the normal operation and lubrication effect of the engine.

[0037] Furthermore, the oil return passage 3 includes a first sub-oil passage 31 and a second sub-oil passage 32 which are connected to each other. The first sub-oil passage 31 is located outside the cylinder hole 1 , and the second sub-oil passage 32 is located outside the crankshaft chamber 2 .

[0038] Specifically, the lubricating oil of the first sub-oil passage 31 and the second sub-oil passage 32 can flow with each other. By setting the first sub-oil passage 31 and the second sub-oil passage 32 connected to each other, an integral oil return passage 3 is formed, wherein the first sub-oil passage 31 is located on the outside of the cylinder bore 1, that is, the first sub-oil passage 31 can recover the lubricating oil above the cylinder block and near the cylinder bore 1. The first sub-oil passage 31 is set on the outside of the cylinder bore 1, that is, the first sub-oil passage 31 has no interference with the cylinder bore 1, and the space of the cylinder block 100 is fully utilized, thereby improving the space utilization efficiency and reducing the overall weight of the cylinder block 100. At the same time, the inner peripheral wall of the first sub-oil passage 31 can form a whole with the outer peripheral wall of the cylinder bore 1, thereby improving the upper half of the cylinder block 100. Partial strength and rigidity, improving the NVH performance of the upper part of the cylinder block 100, the second sub-oil channel 32 is located on the outside of the crankshaft chamber 2, that is, the second sub-oil channel 32 can be set at the maximum outer diameter of the crankshaft chamber, that is, the center position of two adjacent main bearing seats, so that the strength and rigidity of the weak structure of the lower part of the cylinder block 100 can be maximized, thereby improving the NVH performance of the crankshaft chamber 2 of the cylinder block 100. When the lubricating oil in the first sub-oil channel 31 flows into the second sub-oil channel 32, that is, when the lubricating oil enters the lower part of the cylinder block 100, not only can lubrication and lubricating oil recovery be smoothly achieved, but also the reliability of the crankshaft movement is guaranteed, and the noise generated when the crankshaft runs at high speed is reduced.

[0039] The setting of the first sub-oil channel 31 and the second sub-oil channel 32 can replace the traditional reinforcing rib structure. In other words, the overall strength and rigidity of the cylinder block 100 can be improved without adding reinforcing rib structure, and the use of components such as sound insulation covers can be reduced, thereby effectively reducing the weight of the cylinder block 100 and the number of components, achieving a lightweight design and reducing costs.

[0040] Therefore, by setting the interconnected first sub-oil channel 31 and the second sub-oil channel 32 at specific positions, the overall strength and rigidity of the cylinder block 100 are greatly improved without adding reinforcing ribs, thereby improving the overall NVH performance of the cylinder block 100, reducing the noise of the crankshaft chamber 2 and the surrounding of the engine, thereby improving the quietness of the entire vehicle and improving the user experience. The first sub-oil channel 31 is set on the outside of the cylinder hole 1, which makes full use of the space of the cylinder block 100, improves the space utilization efficiency, reduces the arrangement of reinforcing ribs, reduces the use of components such as sound insulation covers, and effectively reduces the weight and number of components of the cylinder block 100.

[0041] In some embodiments, the cylinder bore 1, crankshaft chamber 2 and oil return passage 3 are multiple and distributed in one-to-one correspondence, that is, the number of cylinder bores 1, crankshaft chambers 2 and oil return passages 3 can be set to two, three, four or even more. In other words, the number of cylinder bores 1, crankshaft chambers 2 and oil return passages 3 can be set to the same and distributed in one-to-one correspondence. In this way, the number of cylinder bores 1, crankshaft chambers 2 and oil return passages 3 is increased, which can ensure that the lubricating oil can be effectively recovered from the cylinder bore 1 and crankshaft chamber 2 areas to maintain the normal lubrication and cooling functions of the engine. At the same time, increasing the number of oil return passages 3 can further improve the strength and rigidity of the cylinder block 100, thereby improving the NVH performance of the entire vehicle.

[0042] A plurality of cylinder holes 1 are spaced apart and distributed along a first direction, such as Figure 3-Figure 4 As shown, the cylinder bore 1 can be constructed in a cylindrical shape, extending from the top of the cylinder block 100 to the outer periphery of the crankshaft chamber 2 below, and the plurality of cylinder bores 1 are evenly distributed at a certain interval along the longitudinal direction of the cylinder block 100, i.e., the first direction, and a separation area 4 is formed between two adjacent cylinder bores 1 and outside the outermost cylinder bore 1, i.e., Figure 2 As shown, a separation area 4 protruding outward is provided between every two adjacent cylinder holes 1, and a separation area 4 protruding outward is also provided on the outer side of the outermost cylinder hole 1.

[0043] like Figure 2 As shown, the first sub-oil channel 31 and the corresponding separation area 4 are distributed opposite to each other along the second direction, and the second sub-oil channel 32 and the corresponding crankshaft chamber 2 are distributed opposite to each other along the second direction. In this way, the lubricating oil in the first sub-oil channel 31 can flow smoothly to the second sub-oil channel 32 to lubricate the crankshaft in the crankshaft chamber 2, and the inner circumferential wall of the second sub-oil channel 32 and the outer circumferential wall of the crankshaft chamber 2 are an integral structure, thereby enhancing the local strength and rigidity near the crankshaft chamber 2.

[0044] In some embodiments, the cylinder block 100 is further provided with a cylinder head bolt hole 5, which is used to install the cylinder head bolts to ensure that the cylinder head can be tightly fixed on the cylinder block 100, thereby maintaining the sealing of the cylinder. Figure 1 and Figure 3 As shown, the cylinder head bolt hole 5 is located at the top of the cylinder block 100, and the cylinder head may also be provided with bolt holes corresponding to the cylinder head bolt holes 5 on the cylinder block 100, so that the cylinder head bolts pass through the bolt holes on the cylinder head and the cylinder block 100 in sequence to tightly fix the two. Figure 2 As shown, the cylinder head bolt hole 5 is located between the first sub-oil channel 31 and the corresponding separation area 4, that is, the cylinder head bolt hole 5 is located on the inner side of the first sub-oil channel 31, and the two are spaced apart by a certain distance. In this way, it is possible to prevent lubricating oil from leaking into the cylinder head bolt hole 5 area. At the same time, the setting of the cylinder head bolt hole 5 can enhance the rigidity of the cylinder block 100 and improve the overall structural strength of the cylinder block 100.

[0045] In some embodiments, a cooling water jacket 6 is formed between the first sub-oil channel 31 and two adjacent cylinder bores 1 in the corresponding separation area 4 , and the cooling water jacket 6 is distributed along the circumference of the corresponding cylinder bore 1 .

[0046] Specifically, Figure 2 As shown, a cooling water jacket 6 is formed between the outer peripheral wall of the first sub-oil channel 31 and the corresponding separation area 4 and the outer peripheral walls of the two adjacent cylinder holes 1, and the cooling water jacket 6 is distributed along the circumference of the corresponding cylinder hole 1. The coolant can circulate in the cooling water jacket 6, thereby taking away the heat generated by the engine and maintaining the normal working temperature of the engine. The cooling water jacket 6 is arranged around the circumference of the cylinder hole 1, which can improve the efficiency of the coolant in absorbing heat, quickly transfer the temperature of the inner wall of the cylinder body 100 to the coolant, and realize rapid heat dissipation.

[0047] In some embodiments, the width of the oil return channel 3 in the first direction is a and the height in the second direction is b, and satisfies: 1.5≤a / b≤2.5, that is, the ratio of the width a of the oil return channel 3 in the first direction to the height b in the second direction can be 1.5, 1.8, 2.0, 2.3, 2.5 or other ratios. In other words, the width of the oil return channel 3 in the first direction is relatively wide, and the height in the second direction is relatively low. In this way, by effectively constraining and controlling the ratio of the width to the height of the oil return channel 3 and setting it within a reasonable range, it is avoided that the ratio of the width to the height is too large or too small. If it is too small, it will lead to large differences in local strength and stiffness of the cylinder block 100, and if it is too large, it will lead to the inability to effectively improve the strength and stiffness of the cylinder block 100, thereby effectively further improving the side strength and stiffness of the cylinder block 100.

[0048] In some embodiments, the height of the oil return passage 3 in the second direction is b, and satisfies: 10 mm≤b≤20 mm.

[0049] That is to say, the height b of the oil return channel 3 in the second direction can be set to 10mm, 13mm, 15mm, 16mm, 19.5mm, 20mm or other values. It can be understood that the larger the b is, the higher the height of the oil return channel 3 in the second direction is, and the smaller the b is, the lower the height of the oil return channel 3 in the second direction is. However, it cannot be too high or too low. Too low will affect the flow rate of the lubricating oil and cannot effectively improve the strength and rigidity. By setting the height b of the oil return channel 3 in the second direction within a reasonable range of 10mm≤b≤20mm, not only can the local rigidity and strength of the side of the cylinder block 100 be effectively improved, but also the normal flow and recovery of the lubricating oil can be guaranteed.

[0050] In some embodiments, Figure 3 and Figure 4As shown, the cylinder holes 1, crankshaft chambers 2 and oil return passages 3 are all in two groups. By providing two groups of cylinder holes 1, the number of cylinder holes 1 can be greatly increased, thereby increasing the thermal efficiency and working stability of the engine. Two groups of crankshaft chambers 2 are provided correspondingly to ensure that the movements of the pistons in the two groups of cylinder holes 1 can be converted into the rotational movement of the crankshaft, thereby improving the working efficiency and reliability of the engine. The oil return passages 3 are provided correspondingly to ensure that the lubricating oil is evenly distributed inside the engine, providing sufficient lubrication and cooling for various internal components, while ensuring that the stiffness and strength of the cylinder block 100 are evenly improved, thereby further greatly improving the NVH performance of the vehicle and reducing the noise generated by the engine.

[0051] The two groups of cylinder holes 1 are spaced apart and distributed along the second direction, the two groups of crankshaft chambers 2 are spaced apart and distributed along the second direction, and the two groups of oil return passages 3 are spaced apart and distributed along the second direction.

[0052] Specifically, Figure 1 and Figure 2 As shown, one group of cylinder holes 1 includes three cylinder holes 1, and correspondingly, one group of crankshaft chambers 2 includes three crankshaft chambers 2, and one group of oil return passages 3 includes three oil return passages 3, wherein two groups of cylinder holes 1, two groups of crankshaft chambers 2 and two groups of oil return passages 3 are all distributed and spaced apart along the lateral direction of the cylinder block 100, so that a cylinder block 100 with six cylinder holes 1 can be formed, so that the structure of the cylinder block 100 is more compact and balanced, which is beneficial to enhancing the effect of reducing the vibration and noise of the engine and reducing the vibration and noise caused by imbalance, and under high load, the two groups of cylinder holes 1 and crankshaft chambers 2 can work together to provide sufficient power output, thereby improving the operating efficiency of the engine, and under low load, one group of cylinder holes 1 and crankshaft chambers 2 can be used to work, and when one group is damaged, the other group can work normally.

[0053] In some embodiments, Figure 3 and Figure 4 As shown, in the projection along the second direction, the two groups of multiple cylinder holes 1 are staggered along the first direction, that is, the two groups of cylinder holes 1 are symmetrically staggered and distributed on the left and right sides, and the six cylinder holes 1 are not aligned in the transverse direction. In this way, the staggered distribution makes the space utilization of the cylinder body 100 in the transverse and longitudinal directions more efficient, which is beneficial to reducing the overall size of the cylinder body 100, and then to reducing the overall size of the engine. At the same time, the staggered distribution can increase the heat dissipation area between the cylinder holes 1, improve the heat dissipation performance of the engine, ensure that the engine can maintain a stable operating temperature when running at high load for a long time, and help reduce the vibration and noise generated by the engine during operation, thereby improving the overall NVH performance.

[0054] In some embodiments, Figure 2As shown, the oil return passages 3 corresponding to the two groups of cylinder holes 1 are respectively located in the areas where the two groups of cylinder holes 1 are away from each other, that is, the six oil return passages 3 are all arranged on the outsides of the six cylinder holes 1, that is, located on the left and right sides of the cylinder block 100, thereby improving the strength and rigidity of the side of the cylinder block 100, ensuring that each cylinder hole 1 and its related components can be fully lubricated, recovering more lubricating oil, and ensuring that the lubricating oil can flow smoothly in the first sub-oil passage 31 and the second sub-oil passage 32.

[0055] The utility model also provides a vehicle.

[0056] According to the vehicle of the embodiment of the utility model, a cylinder block 100 of any of the above-mentioned embodiments is provided. Among them, by setting the first sub-oil passage 31 and the second sub-oil passage 32 interconnected at a specific position, the overall strength and rigidity of the cylinder block 100 are greatly improved without adding reinforcing ribs, thereby improving the overall NVH performance of the cylinder block 100, reducing the noise of the crankshaft chamber 2 and the surrounding of the engine, thereby improving the quietness of the whole vehicle and improving the user experience, and the first sub-oil passage 31 is arranged on the outside of the cylinder hole 1, making full use of the space of the cylinder block 100, improving the space utilization efficiency, reducing the arrangement of reinforcing ribs, reducing the use of parts such as sound insulation covers, and effectively reducing the weight and number of parts of the cylinder block 100.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cylinder block, characterized in that: The cylinder body is provided with a cylinder hole, a crankshaft chamber and an oil return passage, wherein the cylinder hole is communicated with the crankshaft chamber and is separated from the oil return passage; The oil return passage comprises a first sub-oil passage and a second sub-oil passage which are interconnected, the first sub-oil passage is located outside the cylinder hole, and the second sub-oil passage is located outside the crankshaft chamber.

2. The cylinder block according to claim 1, characterized in that: The cylinder holes, the crankshaft chambers and the oil return passages are all multiple and distributed one-to-one, the multiple cylinder holes are distributed at intervals along a first direction, and in the first direction, a separation area is formed between two adjacent cylinder holes and outside the outermost cylinder hole; The first sub-oil passage and the corresponding separation area are distributed opposite to each other along the second direction, and the second sub-oil passage and the corresponding crankshaft chamber are distributed opposite to each other along the second direction.

3. The cylinder block according to claim 2, characterized in that: The cylinder block is further provided with a cylinder head bolt hole, and the cylinder head bolt hole is located between the first sub-oil channel and the corresponding separation area.

4. The cylinder block according to claim 2, characterized in that: A cooling water jacket is formed between the first sub-oil passage and two adjacent cylinder holes in the corresponding separation area, and the cooling water jacket is distributed along the circumference of the corresponding cylinder hole.

5. The cylinder block according to claim 2, characterized in that: The width of the oil return passage in the first direction is a and the height of the oil return passage in the second direction is b, and the relationship: 1.5≤a / b≤2.5 is satisfied.

6. The cylinder block according to claim 2, characterized in that: A height of the oil return passage in the second direction is b and satisfies: 10 mm ≤ b ≤ 20 mm.

7. The cylinder block according to claim 2, characterized in that: The cylinder bore, the crankshaft chamber and the oil return passage are each divided into two groups; The two groups of cylinder holes are spaced apart and distributed along the second direction, the two groups of crankshaft chambers are spaced apart and distributed along the second direction, and the two groups of oil return passages are spaced apart and distributed along the second direction.

8. The cylinder block according to claim 2, characterized in that: In the projection along the second direction, the cylinder holes of the two groups are staggeredly distributed along the first direction.

9. The cylinder block according to claim 2, characterized in that: The oil return passages corresponding to the two groups of cylinder holes are respectively located in areas where the two groups of cylinder holes are away from each other.

10. A vehicle, characterized in that: A cylinder block according to any one of claims 1 to 9 is provided.

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