Engine cylinder block, engine and vehicle

Abstract

The utility model relates to an engine cylinder block, an engine and a vehicle, the engine cylinder block comprises a first blow-by space and a second blow-by space, the first blow-by space is provided with a first channel used for exhausting gas, and the first blow-by space communicates with the second blow-by space through a plurality of communicating channels; therefore, the gas in the second blow-by space is discharged through the first channel. According to the engine cylinder block, gas in the second blow-by space can be exhausted through the communicating channel and the first channel in sequence, so that the first channel of the first blow-by space can assist the second blow-by space in exhausting, the gas pressure in the second blow-by space is reduced, blow-by leakage caused by too large pressure is avoided, and the service life of the engine cylinder block is prolonged. And therefore, the emission of the engine cylinder body is reduced.

Description

Technical Field

[0001] The present application relates to the field of engine cylinder blocks, and in particular to an engine cylinder block, an engine and a vehicle. Background Art

[0002] The engine converts the energy generated by fuel combustion into power and transmits the power to various components. For example, in a vehicle, the engine can provide power for the vehicle to operate normally.

[0003] When the fuel burns, high-temperature and high-pressure gas is generated. The high-temperature and high-pressure gas is discharged from the engine cylinder block through the channel of the blow-by gas space. However, the exhaust capacity of each blow-by gas space in the engine cylinder block is different, which causes uneven pressure inside the engine cylinder block. The pressure in some blow-by gas spaces is too high, and the gas can easily flow out from the gaps in the engine to the outside, causing the engine emissions to fail to meet the standards. Utility Model Content

[0004] In view of the above technical problems, the purpose of the present application is to provide an engine cylinder block capable of balancing internal pressure, an engine including the above engine cylinder block, and a vehicle including the above engine cylinder block or the above engine. Specifically, the present application provides the following technical solutions:

[0005] In a first aspect, an embodiment of the present application provides an engine cylinder block, comprising a first blow-by gas space and a second blow-by gas space, the first blow-by gas space being provided with a first channel for exhausting gas, the first blow-by gas space and the second blow-by gas space being connected by a plurality of connecting channels so that the gas in the second blow-by gas space can be discharged through the first channel.

[0006] The engine cylinder body of the present application includes a first blowby gas space, which is provided with a first channel for exhausting gas. High-temperature gas generated by fuel in the engine cylinder body can be discharged through the first channel to reduce the gas pressure in the first blowby gas space and avoid blowby gas leakage due to excessive pressure.

[0007] The engine cylinder block of the present application also includes a second blowby gas space, which is provided with a connecting channel, and the connecting channel is connected to the first blowby gas space. The gas in the second blowby gas space can be discharged through the connecting channel and the first channel in sequence, so that the first channel of the first blowby gas space can assist the second blowby gas space in exhausting, so as to reduce the air pressure in the second blowby gas space and avoid blowby gas leakage caused by excessive pressure.

[0008] In one embodiment, the engine cylinder block includes a first cylinder and a second cylinder, the first cylinder is connected to a first blowby space, the second cylinder is connected to a second blowby space, and the axis of at least one connecting channel is in the same plane as the axis of the second cylinder. The axis of at least one connecting channel is in the same plane as the axis of the first channel.

[0009] In this embodiment, the axis of a communication channel of the engine cylinder block is in the same plane as the axis of the second cylinder, and the distance between the communication channel and the second cylinder is reduced, so that the gas entering the second blow-by space from the second cylinder can be discharged from the communication channel to the first blow-by space more quickly. The axis of a communication channel of the engine cylinder block is in the same plane as the axis of the first channel, and the distance between the communication channel and the first channel is reduced, so that the gas entering the first blow-by space from the communication channel can be discharged from the first channel to the outside of the engine cylinder block more quickly.

[0010] In one embodiment, the second blowby space is provided with a second channel for exhausting gas, the cross-sectional area of ​​the second channel is S2, and the cross-sectional area of ​​the first channel of the first blowby space is S1, and S1 is greater than S2.

[0011] In this embodiment, the second blowby gas space is also provided with a second channel for exhausting gas. The cross-sectional area of ​​the second channel is smaller than the cross-sectional area of ​​the first channel. The exhaust capacity of the second blowby gas space is smaller than the exhaust capacity of the first blowby gas space. The second blowby gas space is exhausted through the connecting channel to improve the exhaust capacity of the second blowby gas space and avoid excessive pressure in the second blowby gas space.

[0012] In one embodiment, the second blowby space is provided with a second channel for exhausting gas, the cross-sectional area of ​​the second channel is S2, the first blowby space is provided with a plurality of first channels, the sum of the cross-sectional areas of the plurality of first channels is S3, and S3 is greater than S2.

[0013] In this embodiment, the second blowby gas space is also provided with a second channel for exhausting gas. The cross-sectional area of ​​the second channel is smaller than the sum of the cross-sectional areas of the plurality of first channels. The exhaust capacity of the second blowby gas space is smaller than the exhaust capacity of the first blowby gas space. The second blowby gas space can also be exhausted through the connecting channel to increase the exhaust capacity of the second blowby gas space and avoid excessive pressure in the second blowby gas space.

[0014] In one embodiment, the second blow-by space is provided with second channels for exhausting gas, and the number of the first channels is greater than the number of the second channels.

[0015] In this embodiment, the second blowby gas space is also provided with a second channel for exhausting gas, the number of the second channels is less than the number of the first channels, the exhaust capacity of the second blowby gas space is less than the exhaust capacity of the first blowby gas space, and the second blowby gas space can also be exhausted through the connecting channel to improve the exhaust capacity of the second blowby gas space to avoid excessive pressure in the second blowby gas space.

[0016] In one embodiment, the number of the second blowby spaces is two, the two second blowby spaces are spaced apart in the first direction, the first blowby space is located between the two second blowby spaces, and the second channel of each second blowby space is disposed adjacent to the first blowby space.

[0017] In this embodiment, two second blow-by gas spaces are located on both sides of a first blow-by gas space, and the first blow-by gas space is connected to the two second blow-by gas spaces through connecting channels, respectively, for assisting the exhaust of the second blow-by gas spaces. The second channel of the second blow-by gas space is adjacent to the first blow-by gas space, thereby reducing the space occupied by the second channel of the second blow-by gas space to leave space for the installation of other components and improve the integration of the engine cylinder block.

[0018] In one embodiment, the engine cylinder block includes a first cylinder and a second cylinder, the first cylinder is connected to a first blow-by gas space, the second cylinder is connected to a second blow-by gas space, the first cylinder and the first blow-by gas space are spaced apart in a second direction, the second cylinder and the second blow-by gas space are spaced apart in the second direction, and the first blow-by gas space and / or the second blow-by gas space are composed of at least two shells spliced ​​together, wherein the two shells are arranged along the second direction.

[0019] In this embodiment, the first blow-by gas space and / or the second blow-by gas space is composed of at least two shells spliced ​​together. Dividing the cylinder into multiple shells reduces the processing difficulty and facilitates the processing and molding of the engine cylinder body.

[0020] In one embodiment, the shell includes a notch, and the communication channel is formed by connecting two notches.

[0021] In this embodiment, the connecting passage is located at the connection of at least two shells, and the connecting passage is formed by connecting two notches on the two shells, which reduces the processing difficulty of the connecting passage and improves the processing efficiency of the engine cylinder block.

[0022] In a second aspect, an embodiment of the present application further provides an engine, which includes a crankshaft and the above-mentioned engine cylinder block, wherein a first blowby space and a second blowby space of the engine cylinder block are spaced apart from each other along the axis of the crankshaft, and the first blowby space and the second blowby space are used to accommodate part of the crankshaft.

[0023] In one embodiment, the engine includes an oil-gas separation device, which is connected to the first channel of the first blow-by gas space, and is used to process the gas exhausted from the first blow-by gas space and the second blow-by gas space.

[0024] In this embodiment, the oil-gas separation device is connected to the first blowby gas space through the first channel and to the second blowby gas space through the connecting channel and the first channel, and is used to process the gas discharged from the first blowby gas space and the second blowby gas space and separate the engine oil carried out in the gas.

[0025] In a third aspect, an embodiment of the present application further provides a vehicle, comprising wheels and the above-mentioned engine, wherein the engine outputs power which is transmitted to the wheels to drive the wheels to rotate, thereby driving the vehicle to move.

[0026] It can be understood that the engine and vehicle of the present application can balance the pressure inside the engine by adopting the above-mentioned engine cylinder block, avoid blowby gas leakage caused by uneven internal pressure, and thus reduce the emissions of the engine and vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A partial cross-sectional schematic diagram of an engine cylinder block provided in one embodiment of the present application from one perspective;

[0028] Figure 2 A partial cross-sectional schematic diagram of another perspective of an engine cylinder block provided in an embodiment of the present application;

[0029] Figure 3 A partial structural schematic diagram of an engine cylinder block provided in one embodiment of the present application from one perspective;

[0030] Figure 4 A partial structural schematic diagram of an engine cylinder block provided in an embodiment of the present application from another perspective;

[0031] Figure 5 A partial structural schematic diagram of an engine cylinder block provided in an embodiment of the present application from another perspective;

[0032] Figure 6 A partial cross-sectional schematic diagram of another perspective of an engine cylinder block provided in an embodiment of the present application;

[0033] Figure 7 A partial cross-sectional schematic diagram of an engine cylinder block provided in an embodiment of the present application from one perspective;

[0034] Figure 8 A partial cross-sectional schematic diagram of another perspective of an engine cylinder block provided in an embodiment of the present application;

[0035] Fig. 9 A partial cross-sectional schematic diagram of an engine cylinder block from another perspective provided in an embodiment of the present application.

[0036] Reference numerals:

[0037] 100-engine cylinder block; 10-blow-by space; 11-first blow-by space; 12-second blow-by space; 121-first channel; 122-second channel; 123-connecting channel; 13-crankshaft hole; 14-cylinder; 141-first cylinder; 142-second cylinder; 20-housing; 201-upper housing; 2011-first notch; 2012-connecting hole; 2012a-first connecting hole; 2012b-second connecting hole; 2012c-third connecting hole; 202-lower housing; 2021-second notch; 30-oil channel; 31-oil hole; 001-first direction; 002-second direction. DETAILED DESCRIPTION

[0038] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0039] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be used to implement. The serial numbers for the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, include direct and indirect connections (couplings). The directional terms mentioned in the present application, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, 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 to the present application.

[0040] See also Figure 1 , Figure 2 and Figure 3 ,in Figure 1 A partial cross-sectional schematic diagram of an engine cylinder block 100 provided in an embodiment of the present application is shown in one perspective; Figure 2 A partial cross-sectional schematic diagram of another viewing angle of an engine cylinder block 100 provided in an embodiment of the present application is illustrated;

[0041] Figure 3 A partial structural schematic diagram of an engine cylinder block 100 provided in an embodiment of the present application is illustrated from one perspective.

[0042] The engine cylinder block 100 provided in the present application includes a first blow-by gas space 11 and a second blow-by gas space 12. The first blow-by gas space 11 is provided with a first channel 121 for exhausting gas. The first blow-by gas space 11 and the second blow-by gas space 12 are connected by a plurality of connecting channels 123 so that the gas in the second blow-by gas space 12 can be discharged through the first channel 121.

[0043] Specifically, in one embodiment, Figure 1 As shown, the first blow-by gas space 11 is provided with two first channels 121, and the second blow-by gas space 12 is provided with a second channel 122. The exhaust capacity of the second blow-by gas space 12 is less than that of the first blow-by gas space 11. It is understandable that when the air pressure in the first blow-by gas space 11 and the second blow-by gas space 12 is relatively high, the exhaust capacity of the second blow-by gas space 12 is insufficient, which may cause the air pressure in the second blow-by gas space 12 to gradually increase, and then cause the blow-by gas pressure in the second blow-by gas space 12 to be too high, which is easy to flow out from the gap of the engine to the outside, resulting in the engine emissions not meeting the standards. The first blow-by gas space 11 and the second blow-by gas space 12 are connected by a connecting channel 123. Please refer to the following figure for details. Figure 2 , on another cross section of the engine cylinder block 100, the first blow-by gas space 11 and the second blow-by gas space 12 are connected through another connecting channel 123. The gas in the second blow-by gas space 12 can be discharged into the first blow-by gas space 11 through the multiple connecting channels 123, and discharged to the outside of the engine cylinder block 100 through the first channel 121 of the first blow-by gas space 11, thereby realizing auxiliary exhaust of the second blow-by gas space 12.

[0044] It can be understood that fuel is burned inside the engine cylinder block 100 of the present application to obtain power, and high-temperature and high-pressure gas will be generated during the fuel combustion process. Part of the high-temperature and high-pressure gas will leak from the combustion chamber to the first blowby space 11 and the second blowby space 12 of the engine cylinder block 100. Excessive high-temperature and high-pressure gas will cause the pressure in the first blowby space 11 and the second blowby space 12 to rise. Excessive pressure will easily lead to blowby gas leakage, resulting in engine emissions not meeting standards.

[0045] The engine cylinder block 100 of the present application includes a first blowby gas space 11, and the first blowby gas space 11 is provided with a first channel 121 for exhausting gas. The high-temperature gas generated by the fuel in the engine cylinder block 100 can be discharged through the first channel 121 to reduce the air pressure in the first blowby gas space 11 and avoid blowby gas leakage due to excessive pressure.

[0046] The engine cylinder block 100 of the present application includes a second blowby gas space 12, and the second blowby gas space is provided with a connecting channel 123, which is connected to the first blowby gas space 11. The gas in the second blowby gas space 12 can be discharged through the connecting channel 123 and the first channel 121 in sequence, so that the first channel 121 of the first blowby gas space 11 can assist the second blowby gas space 12 in exhausting to reduce the air pressure in the second blowby gas space 12.

[0047] It is understandable that due to the complex structure of the engine cylinder block 100, the channel area for exhausting gas in each cylinder 14 may be different, and the larger the channel area, the stronger the ability to exhaust gas, that is, the exhaust capacity of each blowby space 10 may be different.

[0048] The exhaust capacity of the second blow-by space 12 of the engine cylinder block 100 of the present application is less than the exhaust capacity of the first blow-by space 11. When the exhaust capacity of the second blow-by space 12 is less than the production rate of the high-temperature gas, high-temperature gas accumulates inside the second blow-by space 12, causing the internal pressure of the second blow-by space 12 to be too high, causing blow-by gas leakage, and then causing the engine's emissions to fail to meet the standards. The gas inside the second blow-by space 12 of the engine cylinder block 100 of the present application is discharged into the first blow-by space 11 through the connecting channel 123, and is discharged through the first channel 121 of the first blow-by space 11, thereby reducing the gas pressure in the second blow-by space 12 and avoiding blow-by gas leakage caused by excessive pressure.

[0049] An embodiment of the present application also provides an engine, which includes a crankshaft and the above-mentioned engine cylinder block 100, wherein a first blow-by gas space 11 and a second blow-by gas space 12 of the engine cylinder block 100 are spaced apart from each other along the axis of the crankshaft, and the first blow-by gas space 11 and the second blow-by gas space 12 are used to accommodate part of the crankshaft.

[0050] Specifically, in one embodiment, Figure 2 and Figure 3 As shown, the blow-by space 10 includes a crankshaft hole 13, which extends along the axial direction of the crankshaft and penetrates the four blow-by spaces 10. A bearing is arranged in the crankshaft hole 13, and the bearing is rotatably connected between the crankshaft and the cylinder 14. The engine cylinder block 100 includes four cylinders 14, which are arranged along the axial direction of the crankshaft and are integrally formed with the housing 20. A piston is arranged in each cylinder 14, and one end of each piston is drivingly connected to the crankshaft. The multiple cylinders 14 drive each piston to drive the crankshaft to rotate to output power.

[0051] An embodiment of the present application further provides a vehicle, the vehicle comprising the above-mentioned engine or the above-mentioned engine cylinder block 100 .

[0052] It should be pointed out that the engine cylinder block 100 of the present application can be applied to the above-mentioned engine or the above-mentioned vehicle as a component for outputting power. However, the engine cylinder block 100 is not limited to being applied to engines or vehicles. In other systems that need to provide power, the engine cylinder block 100 of the present application can also be used, and can balance the pressure inside the engine cylinder block 100 to avoid blowby gas leakage caused by excessive pressure in other systems.

[0053] In one embodiment, the engine cylinder block includes a first cylinder 141 and a second cylinder 142, the first cylinder 141 is connected to the first blow-by gas space 11, and the second cylinder 142 is connected to the second blow-by gas space 12, and the axis of at least one connecting channel 123 is in the same plane as the axis of the second cylinder 142 to reduce the distance between the connecting channel 123 and the second cylinder 142, so that the gas entering the second blow-by gas space 12 from the second cylinder 142 can be discharged from the connecting channel 123 to the first blow-by gas space 11 more quickly.

[0054] In one embodiment, if Figure 2 As shown, the engine cylinder block 100 includes four cylinders 14, which are arranged along the axial direction of the crankshaft and are integrally formed with the housing 20. A piston is provided in each cylinder 14, and one end of each piston is connected to the crankshaft. Fuel is delivered to multiple cylinders 14 and burned in multiple cylinders 14 to drive each piston to drive the crankshaft to rotate to output power. The first blow-by space 11 is connected to a first cylinder 141, and the second blow-by space 12 is connected to a second cylinder 142. The high-temperature gas after the fuel in the first cylinder 141 is burned will be discharged into the first blow-by space 11, and the high-temperature gas after the fuel in the second cylinder 142 is burned will be discharged into the second blow-by space 12. The axis of the connecting channel 123 and the axis of the second cylinder 142 are in the same plane, and the distance between the connecting channel 123 and the second cylinder 142 is small. The gas entering the second blow-by space 12 from the second cylinder 142 can be discharged from the connecting channel 123 to the first blow-by space 11 more quickly, thereby improving the exhaust efficiency of the second blow-by space 12.

[0055] In one embodiment, if Figure 1 As shown, in another cross-section of the engine cylinder block 100, the axis of a connecting channel 123 is in the same plane as the axis of the first channel 121, and the distance between the connecting channel 123 and the first channel 121 is small. The gas entering the first blowby space 11 from the second blowby space 12 through the connecting channel 123 can be discharged from the first channel 121 to the outside of the engine cylinder block 100 more quickly, thereby improving the exhaust efficiency of the engine cylinder block 100.

[0056] In one embodiment, the second blowby space 12 is not provided with a channel for direct exhaust, and the gas in the second blowby space 12 is discharged through the connecting channel 123 and the first channel 121 in sequence to achieve exhaust of the second blowby space 12 .

[0057] In one embodiment, the second blowby space 12 is provided with a second channel for exhausting gas, and the cross-sectional area of ​​the second channel is S2. The cross-sectional area of ​​the first channel of the first blowby space is S1, S1 is greater than S2, and the exhaust capacity of the second blowby space 12 is less than the exhaust capacity of the first blowby space 11. The second blowby space 12 is exhausted through the connecting channel 123 to improve the exhaust capacity of the second blowby space 12 and avoid excessive pressure in the second blowby space 12.

[0058] In another embodiment, the second blowby space 12 is provided with a second channel 122 for exhausting gas, the cross-sectional area of ​​the second channel 122 is S2, the first blowby space 11 is provided with a plurality of first channels 121, the sum of the cross-sectional areas of the plurality of first channels 121 is S3, and S3 is greater than S2. The exhaust capacity of the second blowby space 12 is less than the exhaust capacity of the first blowby space 11, and the second blowby space 12 can also be exhausted through the connecting channel 123 to improve the exhaust capacity of the second blowby space 12, thereby avoiding excessive pressure in the second blowby space 12.

[0059] In another embodiment, the second blowby space 12 is also provided with a second channel 122 for exhausting gas, the number of the second channels 122 is less than the number of the first channels 121, the exhaust capacity of the second blowby space 12 is less than the exhaust capacity of the first blowby space 11, and the second blowby space 12 can also be exhausted through the connecting channel 123 to improve the exhaust capacity of the second blowby space 12 and avoid excessive pressure in the second blowby space 12.

[0060] In another embodiment, if Figure 1 As shown, the second blowby space 12 is provided with a second channel 122 for exhausting gas, and the first blowby space 11 is provided with two first channels 121 for exhausting gas, and the sum of the cross-sectional areas of the two first channels 121 is greater than the cross-sectional area of ​​one second channel 122. The exhaust capacity of the second blowby space 12 is less than that of the first blowby space 11, and the second blowby space 12 can also be exhausted through the connecting channel 123 to improve the exhaust capacity of the second blowby space 12, thereby avoiding excessive pressure in the second blowby space 12.

[0061] It is understandable that the cross-sectional area of ​​each first channel 121 of the first blowby space 11 may be different. Similarly, the second blowby space 12 may also be provided with a plurality of second channels 122 for exhausting gas, and the cross-sectional area of ​​each second channel 122 of the second blowby space 12 may be different.

[0062] In one embodiment, one or more of the first channel 121, the second channel 122 and the connecting channel 123 include multiple sub-channels, and the multiple sub-channels are spaced from each other. The structure of the engine cylinder block 100 is relatively complex, with multiple holes and inner cavity structures. Multiple sub-channels with smaller areas can be arranged on the first blowby space 11 and the second blowby space 12 to connect to each other or to the outside. The arrangement of the sub-channels makes the arrangement of the first channel 121, the second channel 122 and the connecting channel 123 of the engine cylinder block 100 more flexible.

[0063] In one embodiment, the number of second blow-by gas spaces 12 is two, and the two second blow-by gas spaces 12 are spaced apart in the first direction 001. The first blow-by gas space 11 is located between the two second blow-by gas spaces 12, and the second channel 122 of each second blow-by gas space 12 is arranged adjacent to the first blow-by gas space 11, thereby reducing the space occupied by the second channel 122 of the second blow-by gas space 12 to leave space for the installation of other components, thereby improving the integration of the engine cylinder block 100.

[0064] In one embodiment, if Figure 1 As shown, the engine cylinder block 100 includes two first blow-by gas spaces 11 and two second blow-by gas spaces 12. The two second blow-by gas spaces 12 are respectively located at the head end and the end end of the engine cylinder block 100. The second channel 122 of the second blow-by gas space 12 is adjacent to the first blow-by gas space 11, thereby reducing the space occupied by the second channel 122 of the second blow-by gas space 12 to leave space for setting up other components, thereby improving the integration of the engine cylinder block 100.

[0065] See also Figure 4 A partial structural diagram of an engine cylinder block 100 provided in an embodiment of the present application from another perspective is shown.

[0066] In one embodiment, the engine cylinder block 100 includes a first cylinder 141 and a second cylinder 142, the first cylinder 141 is connected to the first blow-by space 11, the second cylinder 142 is connected to the second blow-by space 12, the first cylinder 141 and the first blow-by space 11 are spaced apart in the second direction 002, the second cylinder 142 and the second blow-by space 12 are spaced apart in the second direction 002, and the first blow-by space 11 and / or the second blow-by space 12 are composed of at least two shells 20, wherein the two shells are arranged along the second direction 002. The engine cylinder block 100 is divided into a plurality of shells 20 to reduce the difficulty of processing and facilitate the processing and forming of the engine cylinder block 100.

[0067] In one embodiment, if Figure 1 and Figure 4As shown, the housing 20 includes an upper housing 201 and a lower housing 202, and the upper housing 201 and the lower housing 202 are arranged along the second direction. The cylinder 14 and the upper housing 201 are integrally formed.

[0068] In one embodiment, if Figure 2 and Figure 4 As shown, the upper shell 201 and the lower shell 202 are provided with a crankshaft hole gap, and the upper shell 201 and the lower shell 202 are spliced ​​so that the gap forms a crankshaft hole 13, and the crankshaft passes through the crankshaft hole 13. The crankshaft hole 13 is provided with a bearing, and the crankshaft is rotatably connected to the cylinder 14 through the bearing. The crankshaft hole 13 is arranged at the splicing of the upper shell 201 and the lower shell 202, which can simplify the processing steps of the engine cylinder block 100 and facilitate processing.

[0069] See also Figure 5 and Figure 6 ,in Figure 5 A partial structural schematic diagram of an engine cylinder block 100 provided in an embodiment of the present application from another perspective is shown; Figure 6 A partial cross-sectional schematic diagram of another viewing angle of an engine cylinder block 100 provided in an embodiment of the present application is illustrated.

[0070] In one embodiment, if Figure 5 and Figure 6 As shown, both the upper shell 201 and the lower shell 202 are provided with notches. When the upper shell 201 and the lower shell 202 are spliced ​​to form the blow-by gas space 10, the two notches are butted to form a connecting channel 123 for connecting the first blow-by gas space 11 and the second blow-by gas space 12. Providing the connecting channel 123 at the splicing of the upper shell 201 and the lower shell 202 can also simplify the processing steps and facilitate processing.

[0071] In addition, if Figure 6 As shown, the connecting channel 123 and the crankshaft hole 13 are both formed by the gap between the upper shell 201 and the lower shell 202, and reducing the number of connecting channels 123 while ensuring the exhaust capacity of each blow-by space 10 can increase the thickness of the shell 20 at the crankshaft hole 13 and improve the reliability of the crankshaft hole 13.

[0072] See also Figure 7 A partial cross-sectional schematic diagram from one perspective of an engine cylinder block 100 provided in one embodiment of the present application is shown.

[0073] In one embodiment, if Figure 7 As shown, the upper shell 201 is provided with a first notch 2011, and the lower shell 202 is provided with a second notch 2021. The upper shell 201 and the lower shell 202 are spliced ​​so that the first notch 2011 and the second notch 2021 are butted against each other to form a communication channel 123.

[0074] In a preferred embodiment, Figure 7 As shown, the maximum distance between the first notch 2011 and the surface of the upper shell 201 facing the lower shell 202 is L1, and the range of L1 is 12mm to 18mm. It can be understood that an excessively large L1 makes the thickness of the shell 20 near the crankshaft hole 13 smaller, and the strength of the upper shell 201 is lower, which easily leads to failure of the upper shell 201. An excessively small L1 makes the area of ​​the connecting channel 123 smaller, and the exhaust efficiency between the first blowby space 11 and the second blowby space 12 is lower, which is not conducive to the pressure balance between the first blowby space 11 and the second blowby space 12.

[0075] In a preferred embodiment, Figure 7 As shown, the maximum width of the first notch 2011 is L2, and the range of L2 is 12 mm to 18 mm. It can be understood that an excessively large L2 reduces the shell thickness between the crankshaft hole 13 and the connecting passage 123, and the strength of the upper shell 201 is low, which easily leads to failure of the upper shell 201. An excessively small L2 makes the area of ​​the connecting passage 123 small, and the exhaust efficiency between the first blowby space 11 and the second blowby space 12 is low, which is not conducive to the pressure balance between the first blowby space 11 and the second blowby space 12.

[0076] In a preferred embodiment, Figure 7 As shown, the maximum distance between the second notch 2021 and the surface of the lower shell 202 facing the upper shell 201 is L3, and the range of L3 is 12mm to 18mm. It can be understood that an excessively large L3 makes the thickness of the shell 20 near the crankshaft hole 13 smaller, and the strength of the lower shell 202 is lower, which easily leads to failure of the lower shell 202. An excessively small L3 makes the area of ​​the connecting channel 123 smaller, and the exhaust efficiency between the first blowby space 11 and the second blowby space 12 is lower, which is not conducive to the pressure balance between the first blowby space 11 and the second blowby space 12.

[0077] In a preferred embodiment, the maximum width of the second notch 2021 is L4, and the range of L4 is 12 mm to 18 mm. It can be understood that an excessively large L4 reduces the shell thickness between the crankshaft hole 13 and the first blowby space 11 and the second blowby space 12, and the strength of the lower shell 202 is low, which easily leads to failure of the lower shell 202. An excessively small L4 makes the area of ​​the connecting channel 123 small, and the exhaust efficiency between the first blowby space 11 and the second blowby space 12 is low, which is not conducive to the pressure balance between the first blowby space 11 and the second blowby space 12.

[0078] See also Figure 8 A partial cross-sectional schematic diagram of another viewing angle of an engine cylinder block 100 provided in an embodiment of the present application is shown.

[0079] In a preferred embodiment, Figure 8 As shown, the minimum distance between the cylinder 14 and the connecting passage 123 is L5, and the value range of L5 is 7mm to 13mm. It can be understood that an excessively large L5 makes the area of ​​the connecting passage 123 smaller, reduces the high-temperature and high-pressure gas passing through the connecting passage 123, and is not conducive to the internal pressure balance of the engine cylinder block 100 of the present application. At the same time, an excessively large L5 is prone to produce defects such as shrinkage holes during the casting process of the shell 20. An excessively small L5 makes the shell 20 between the cylinder 14 and the blowby space 10 smaller in thickness and lower in strength. Under the action of gravity, the shell 20 with a smaller thickness is prone to failure, making the engine cylinder block 100 of the present application unable to work normally.

[0080] In a preferred embodiment, Figure 8 As shown, the minimum distance between the connecting passage 123 and the crankshaft hole 13 is L6, and the value range of L6 is 12mm to 18mm. It can be understood that an excessively large L6 makes the area of ​​the connecting passage 123 smaller, reduces the high-temperature and high-pressure gas passing through the connecting passage 123, and is not conducive to the internal pressure balance of the engine cylinder block 100 of the present application. An excessively small L6 reduces the thickness of the housing 20 between the crankshaft hole 13 and the connecting passage 123, and the strength of the upper housing 201 is low, which easily leads to failure of the upper housing 201.

[0081] In one embodiment, if Figure 6 As shown, the engine cylinder block 100 of the present application includes an oil passage 30, which extends along the axial direction of the crankshaft. The oil passage 30 includes a plurality of oil holes 31, each of which is connected to a blow-by space 10. The oil passage 30 is used to supply oil to the crankshaft to reduce the wear of the crankshaft. The oil passage 30 is connected to a container filled with engine oil, and the engine oil flows into the blow-by space 10 through the oil passage 30 and the oil hole 31. Under the action of gravity, the engine oil is retained at the bottom of the blow-by space 10. The crankshaft located at the bottom of the blow-by space 10 can contact with the retained engine oil, thereby reducing the wear caused by the relative movement between the crankshaft and the blow-by space 10, thereby extending the service life of the crankshaft.

[0082] In one embodiment, if Figure 6 As shown, the oil passage 30 is fixed to the upper housing 201, and the oil hole 31 of the oil passage 30 extends toward the crankshaft hole 13 and communicates with the crankshaft hole 13, forming an inclined oil hole 31. The oil passage 30 is located in the upper housing 201, and the crankshaft hole 13 is located between the upper housing 201 and the lower housing 202. The oil passage 30 is located relatively above the crankshaft hole 13, so that the oil in the oil passage 30 can flow toward the crankshaft hole 13 under the action of gravity. At the same time, the inclined oil hole 31 allows the oil to flow into the crankshaft hole 13 more smoothly, avoiding the oil from flowing too fast and preventing the oil from splashing and contaminating other components.

[0083] In another embodiment, the oil passage 30 is connected to the blow-by gas space 10 through the oil hole 31. An inclined oil hole 31 may also be provided to allow the engine oil to smoothly flow into the blow-by gas space 10 to prevent the engine oil from splashing and contaminating other components.

[0084] See also Fig. 9 A partial cross-sectional schematic diagram of another viewing angle of an engine cylinder block 100 provided in an embodiment of the present application is shown.

[0085] In a preferred embodiment, Fig. 9 As shown, the minimum distance between the oil hole 31 and the connecting channel 123 is L7, and the range of L7 is 6mm to 12mm. It can be understood that an excessively large L7 makes the area of ​​the connecting channel 123 smaller, and the exhaust efficiency between the first blowby space 11 and the second blowby space 12 is low, which is not conducive to the pressure balance between the first blowby space 11 and the second blowby space 12. An excessively small L7 makes the thickness of the shell 20 between the connecting channel 123 and the oil hole 31 smaller, and the strength of the shell 20 around the connecting channel 123 is low, which may cause the upper shell 201 to fail.

[0086] In one embodiment, the engine includes an oil-gas separation device, which is connected to the first channel 121 of the first blowby space 11, and is used to process the gas exhausted from the first blowby space 11 and the second blowby space 12. The gas in the first blowby space 11 is exhausted to the oil-gas separation device through the first channel 121, and the gas in the second blowby space 12 is exhausted to the oil-gas separation device through the connecting channel 123 and the first channel 121 in sequence.

[0087] In one embodiment, if Figure 3 and Figure 4 As shown, the upper shell 201 is provided with a connection hole 2012, a first connection hole 2012a, a second connection hole 2012b and a third connection hole 2012c, and the first connection hole 2012a, the second connection hole 2012b and the third connection hole 2012c are all connected to the oil-gas separation device. Among them, the first connection hole 2012a and the third connection hole 2012c are respectively connected to the first channel 121 of the two first channels 121 of the first blowby space 11 facing the second blowby space 12, and the second channel 122 of the second blowby space 12. The second connection hole 2012b is located between the two first blowby spaces 11, and is respectively connected to the adjacent first channels 121 of the two first blowby spaces 11. It can be understood that through the setting of the connection hole 2012, the gas in the second blowby space 12 can be first discharged to the connection hole 2012 through the second channel 122, and then discharged to the oil-gas separation device.

[0088] In some embodiments, the engine cylinder block 100 of the present application includes a cylinder head and an oil pan, wherein the cylinder head is located on the side of the upper housing 201 away from the lower housing 202, and the oil pan is located on the side of the lower housing 202 away from the upper housing 201. The cylinder head, the upper housing 201, the lower housing 202 and the oil pan enclose the cylinder 14 so as to seal it. A receiving cavity is provided in the cylinder head, and the fuel burns in the receiving cavity to drive the piston to slide in the cylinder 14. The oil pan is provided with an oil storage tank, and after the oil pan is connected to the lower housing 202, the oil storage tank is respectively connected to the first blowby space 11 and the second blowby space 12 to form a space for storing engine oil. Under the action of gravity, the engine oil is retained in the oil storage tank of the oil pan to lubricate the crankshaft.

[0089] 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 present application. 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 may be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. An engine cylinder block, characterized in that: The invention comprises a first blowby gas space and a second blowby gas space, wherein the first blowby gas space is provided with a first channel for exhausting gas, and the first blowby gas space and the second blowby gas space are connected through a plurality of connecting channels so that the gas in the second blowby gas space is exhausted through the first channel.

2. The engine cylinder block according to claim 1, characterized in that: The engine cylinder block includes a first cylinder and a second cylinder, the first cylinder is connected to the first blowby space, the second cylinder is connected to the second blowby space, the axis of at least one of the connecting passages is in the same plane as the axis of the second cylinder, and the axis of at least one of the connecting passages is in the same plane as the axis of the first passage.

3. The engine cylinder block according to claim 1, characterized in that: The second blowby gas space is provided with a second channel for exhausting gas, and the cross-sectional area of ​​the second channel is S2. The cross-sectional area of ​​the first channel of the first blowby gas space is S1, and S1 is greater than S2.

4. The engine cylinder block according to claim 1, characterized in that: The second blowby space is provided with a second channel for exhausting gas, the cross-sectional area of ​​the second channel is S2, the first blowby space is provided with a plurality of first channels, the sum of the cross-sectional areas of the plurality of first channels is S3, and S3 is greater than S2.

5. The engine cylinder block according to claim 1, characterized in that: The second blow-by gas space is provided with second channels for exhausting gas, and the number of the first channels is greater than the number of the second channels.

6. The engine cylinder block according to claim 5, characterized in that: The number of the second blow-by gas spaces is two, the two second blow-by gas spaces are arranged at intervals in the first direction, and the first blow-by gas space is located between the two second blow-by gas spaces; The second channel of each of the second blow-by gas spaces is disposed adjacent to the first blow-by gas space.

7. The engine cylinder block according to any one of claims 1 to 6, characterized in that: The engine cylinder body comprises a first cylinder and a second cylinder, the first cylinder is connected to the first blow-by gas space, and the second cylinder is connected to the second blow-by gas space; The first cylinder and the first blow-by gas space are spaced apart in the second direction, the second cylinder and the second blow-by gas space are spaced apart in the second direction, and the first blow-by gas space and / or the second blow-by gas space are composed of at least two shells, wherein the two shells are arranged along the second direction.

8. The engine cylinder block according to claim 7, characterized in that: The shell includes a notch, and the communication channel is formed by connecting two notches.

9. An engine, characterized in that: It comprises a crankshaft and an engine cylinder block according to any one of claims 1 to 8, wherein a first blow-by gas space and a second blow-by gas space of the engine cylinder block are spaced apart from each other along the axis of the crankshaft, and the first blow-by gas space and the second blow-by gas space are used to accommodate part of the crankshaft.

10. The engine according to claim 9, characterized in that: The engine includes an oil-gas separation device, which is communicated with a first passage of the first blow-by gas space and is used to process gas exhausted from the first blow-by gas space and the second blow-by gas space.

11. A vehicle, characterized in that: An engine cylinder block comprising any one of claims 1 to 8; or Comprising an engine as claimed in claim 9 or 10.

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