CN114458471A - Cylinder block assemblies for engines and engines - Google Patents

Abstract

A cylinder block assembly for an engine includes a cylinder block having an intake side, an exhaust side, a block front side, and a block rear side. The cylinder body comprises a crankshaft mounting hole, a main oil duct and an oil suction opening, the crankshaft mounting hole is located between the air inlet side and the air outlet side and is provided with a first central shaft, the main oil duct is provided with a central shaft parallel to the first central shaft, the oil suction opening is used for sucking lubricating oil, and the main oil duct and the oil suction opening are located on two opposite sides of the crankshaft mounting hole respectively. According to the cylinder body assembly, the oil suction port and the main oil gallery are respectively positioned at the two opposite sides of the crankshaft mounting hole, so that the oil way is simple to arrange, and a good lubricating effect can be obtained.

Description

Cylinder block assemblies for engines and engines

technical field

The present invention relates to the technical field of engine cooling, and in particular, to a cylinder block assembly for an engine.

Background technique

In the process of completing energy conversion, the engine needs to dissipate heat through the engine cooling system. In the early days, the engine was mainly cooled by air convection. As the power density of the engine continues to increase and factors such as emissions and energy-saving technologies are considered, if the necessary cooling measures are not taken for the engine cylinder block to make it work within the most suitable temperature range, it will lead to the tendency of pre-ignition and detonation. Damage to engine parts due to additional shock loads. At the same time, the lubrication condition of the engine will be deteriorated, and the normal clearance of the moving parts will be destroyed, which will cause friction and wear of the parts, and ultimately reduce its working efficiency and service life.

In the prior art, in order to lubricate the relevant components on the cylinder block assembly, a main oil passage is generally provided on the cylinder block. In order to introduce the oil in the oil pan into the main oil gallery, the cylinder block assembly further includes an oil catcher located in the oil pan. The oil in the oil pan is sucked into the main oil passage through the oil filter. The cylinder block is provided with an oil suction port connected to the oil filter. The current oil suction port and the main oil passage are both arranged on the same side of the cylinder block, and this arrangement will cause the main oil passage to be poorly arranged.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a cylinder block assembly for an engine with a simple structure and good lubricating effect.

In order to achieve the above purpose, the following technical solutions are provided:

According to one aspect of the present invention, there is provided a cylinder block assembly for an engine, the cylinder block assembly including a cylinder block having an intake side, an exhaust side, a block front side, and a block rear side. The cylinder block includes a crankshaft mounting hole located between the intake side and the exhaust side and provided with a first central axis, a main oil passage with the central axis parallel to the first central axis, and an oil suction port for sucking lubricating oil , the oil suction port and the main oil passage are respectively located on opposite sides of the crankshaft installation hole.

Preferably, the cylinder block assembly further includes an oil filter located under the cylinder block and a mounting seat for fixing the oil filter to the cylinder block, the mounting seat is provided with a first connecting oil passage on the intake side and the exhaust side. A connecting channel and a second connecting channel connecting the oil collecting filter with the oil suction port.

Preferably, the first connection channel and the second connection channel are vertically arranged and separated.

Preferably, the main oil passage is located on the exhaust side, the oil suction port is located on the intake side, and the cylinder block further includes an oil filter located on the intake side and an oil cooler located on the exhaust side, so The cylinder block includes a first oil circuit that flows into the oil filter, a second oil circuit that flows out of the oil filter and is connected to the first connecting passage, and a third oil passage that flows into the oil cooler and is connected to the first connecting passage. and a fourth oil passage that flows out of the oil cooler and is connected to the main oil passage.

Preferably, the first oil circuit, the second oil circuit and the third oil circuit are all "L" shaped, the second oil circuit and the third oil circuit are located in the same plane, and the first oil circuit is located in the same plane. The plane is perpendicular to the plane where the second oil circuit and the third oil circuit are located.

Preferably, the plane where the second oil passage and the third oil passage are located is perpendicular to the first central axis.

Preferably, the cylinder block further comprises a first balance shaft mounting hole with a central axis parallel to the first central axis, a second balance shaft mounting hole with a central axis parallel to the first central axis, and a central axis and The camshaft installation hole parallel to the first central axis, the first balance shaft installation hole, the camshaft installation hole and the main oil passage are located on the same side of the cylinder block, the second balance shaft installation hole and the main oil passage are located in the cylinder block opposite sides.

Preferably, the camshaft installation hole is located above the main oil passage, and the first balance shaft installation hole is located below the main oil passage.

Preferably, the cylinder block further comprises a first branch oil passage connecting the main oil passage and the camshaft mounting hole and a second branch oil passage connecting the main oil passage and the crankshaft mounting hole, the first branch oil passage and The second branch oil circuit is located on the same plane.

Preferably, the cylinder block further includes a third branch oil circuit connecting the second branch oil circuit and the second balance shaft mounting hole, and the third branch oil circuit and the first branch oil circuit are located on the same plane.

According to another aspect of the present invention, there is also provided an engine comprising the above-mentioned cylinder block assembly.

In the cylinder block assembly of the present invention, the oil suction port and the main oil passage are respectively located on opposite sides of the crankshaft installation hole, so that the arrangement of the oil passage is simple, and a better lubricating effect can be obtained.

Description of drawings

The present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments:

FIG. 1 is a partially exploded view of the cylinder block assembly of the present invention.

FIG. 2 is a perspective view of a water pump installed in the cylinder block assembly of the present invention.

FIG. 3 is a perspective view of an oil cooler mounted on the cylinder block assembly of the present invention.

FIG. 4 is a perspective view of a cylinder block assembly of the present invention with a cooling duct installed.

5 is a perspective view of the cylinder block assembly mounted oil pump of the present invention.

FIG. 6 is a front view of the cylinder block assembly of the present invention where the oil pump, the mounting seat and the oil collecting filter are installed.

FIG. 7 is a schematic diagram of the cylinder block assembly of the present invention when the mounting seat and the oil filter are not provided.

FIG. 8 is a cross-sectional view taken along the line “A-A” in FIG. 7 .

Figure 9a is a perspective view of a cooling duct.

Figure 9b is a front view of the cooling duct.

Figure 9c is a cross-sectional view taken along the line "B-B" in Figure 9b.

10 is a partial cross-sectional view of the cylinder block assembly.

FIG. 11 is a cross-sectional view taken along the line “C-C” in FIG. 10 .

Figure 12 is a perspective view of the mounting seat and the oil filter after assembly.

Fig. 13 is a perspective view from another angle after the mounting seat and the oil filter are assembled.

Figure 14 is a cross-sectional view of the mounting seat and the oil filter after assembly.

FIG. 15 is a cross-sectional view taken along the line “D-D” in FIG. 14 .

FIG. 16 is a cross-sectional view taken along the line “E-E” in FIG. 14 .

Detailed ways

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

In order to keep the drawings concise, the drawings only schematically show the parts related to the present invention, and they do not represent its actual structure as a product. In addition, in order to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is marked. As used herein, "one" not only means "only one", but also "more than one".

It should also be further understood that, as used in this specification and the appended claims, the term "and/or" refers to and including any and all possible combinations of one or more of the associated listed items .

In this article, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, or It can be connected in one piece; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

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

In order to more clearly describe the embodiments of the present invention or the technical solutions in the prior art, the specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative efforts, and obtain other implementations.

1 to 6, the present invention discloses a cylinder block assembly 100, which includes a cylinder block 1, a cooling pipe 2 fixed on the cylinder block 1, a water pump 3 fixed on the cylinder block 1, and a water pump 3 fixed on the cylinder block 1. 1, the oil cooler 4, the oil filter 5, the mounting seat 6 for fixing the oil filter 5 to the cylinder block 1, and the oil pump 7. The cylinder block 1 is provided with an intake side 13 , an exhaust side 14 , a cylinder block front side 11 and a cylinder block rear side 12 . The water pump 3 and the oil pump 7 are provided on the front side 11 of the cylinder block, the oil cooler 4 is provided on the exhaust side 14, the oil filter 5 and the mounting seat 6 are provided on the lower side of the cylinder block 1, and the cooling pipe 2 is provided on the cylinder block. 12 rear side. Preferably, the suction port (not numbered) of the oil collecting filter 5 is arranged in the middle area below the cylinder block 1 . The longitudinal direction in the present invention is the direction of the cylinder block 1 along the first central axis 1941 (see below), and is also the front-rear direction of the cylinder block 1 . The lateral direction in the present invention is the direction perpendicular to the first central axis 1941 and is also the left-right direction of the cylinder block 1 .

The cylinder block assembly 100 in this embodiment is a part of the engine. In addition to the cylinder block assembly 100 , the engine generally also includes an oil pan, a cylinder head, a cylinder head casing, a turbocharger, and a fuel injection system.

The cylinder block 1 includes a crankshaft mounting hole 194 with a first central axis 1941, a main oil passage 185 with a central axis parallel to the first central axis 1941, a camshaft mounting hole with a central axis parallel to the first central axis 1941 191. A first balance shaft mounting hole 193 with a central axis parallel to the first central axis 1941 and a second balance shaft mounting hole 192 with a central axis parallel to the first central axis 1941 are provided. The camshaft mounting hole 191 is provided above the main oil passage 185 , and the first balance shaft mounting hole 193 is provided below the main oil passage 185 . The first balance shaft mounting hole 193 and the second balance shaft mounting hole 192 are respectively located on opposite sides of the crankshaft mounting hole 194 . The first balance shaft mounting hole 193, the camshaft mounting hole 191 and the main oil passage 185 are located on the same side of the cylinder block. Preferably, the first balance shaft mounting hole 193 , the camshaft mounting hole 191 and the main oil passage 185 are located on the exhaust side 14 of the cylinder block, and the second balance shaft mounting hole 192 is located on the intake side 13 of the cylinder block. The central axis of the main oil passage 185 is closer to the center of the cylinder block 1 than the central axes of the camshaft mounting hole 191 and the first balance shaft mounting hole 193 .

The water pump 3 is provided on the upper side of the cylinder block 1, and the oil pump 7 is provided on the lower side of the cylinder block. The intake side 12 of the cylinder block 1 is further provided with an oil filter mounting seat 124 , and an oil filter (not shown) is fixed on the oil filter mounting seat 124 .

Referring to Figs. 7 to 9c, the cylinder block assembly 100 includes a cooling water pipeline and a cylinder 16 disposed between the cooling water pipelines. The cooling water pipeline includes a first water channel 171 on the intake side 13 , a second water channel 172 on the exhaust side 14 , and a third water channel 172 connecting the first water channel 171 and the second water channel 172 and located on the rear side 12 of the cylinder block. Waterway 173. The cooling water pipeline is arranged around the cylinder 16 to cool the cylinder block 1 .

The cylinder block 1 is further provided with an oil cooler mounting portion 15 located on the exhaust side 14 , and the oil cooler mounting portion 15 is provided on the second water passage 172 . This arrangement allows cooling water to flow into the oil cooler 4 (see FIG. 3 ) to cool the oil (lubricating oil) flowing through the oil cooler. The cylinder block assembly 100 also includes a cooling duct 2 fixed to the rear side 12 of the cylinder block, and a third water passage 173 is provided in the cooling duct 2 . In the present embodiment, since the first water passage 171 and the second water passage 172 are provided on the cylinder block 1, the first water passage 171 and the second water passage 172 may be referred to as cylinder block water passages. Since the third water channel 173 is provided on the cooling pipe 2, the third water channel 173 can also be referred to as a cooling pipe water channel. The third water passage 173 in this embodiment is fixed to the cylinder block 1 by assembling. In other embodiments, the third water passage 173 can also be directly formed on the cylinder block 1 .

The cooling duct 2 is provided in an elongated shape and is placed on the upper side of the cylinder block 1 . The cooling pipe 2 includes a first connection port 1731 located at one end of the third water channel 173 and connected to the first water channel 171 , and a second connection port 1732 located at the other end of the third water channel 173 and connected to the second water channel 172 . Both the first connection port 1731 and the second connection port 1732 are arranged in a rectangular shape, and the height of the first connection port 1731 is smaller than the height of the second connection port 1732 . By increasing the height of the second connection port 1732 , the cooling water flowing through the second connection port 1732 can better flow into the oil cooler 4 .

The first water channel 171 and the second water channel 172 are arranged in parallel, and are both perpendicular to the third water channel 173 . The extending directions of the first water passage 171 and the second water passage 172 are parallel to the first central axis 1941 . The cooling water pipeline includes a water inlet and a water return port (not numbered) which are both arranged on the front side of the cylinder body, and both the water inlet and the water return port are communicated with the water pump 3 .

The cylinder block 1 further includes a cylinder water jacket cavity surrounding the cylinder and communicating with the first water passage 171 . The cylinder 1 includes a first cylinder 161 and a second cylinder 162 that is farther from the front side 11 of the cylinder body than the first cylinder 161 , and the cylinder water jacket cavity includes a first cylinder water jacket cavity 1612 surrounding the first cylinder 161 and surrounding the The second cylinder water jacket cavity 1622 of the second cylinder 162 . The cooling water pipeline also includes a first communication hole 1611 connecting the first cylinder water jacket cavity 1612 with the first water passage 171 and a second communication hole 1621 connecting the second cylinder water jacket cavity 1622 with the first water passage 171 . The diameter of the first communication hole 1611 is smaller than that of the second communication hole 1621 . This setting can make the amount of cooling water flowing into the first cylinder water jacket cavity 1622 and the second cylinder water jacket cavity 1612 almost the same.

The cylinder block 1 further includes a third cylinder 163 located closer to the front side 11 of the cylinder block than the first cylinder 161 and a fourth cylinder 164 located farther from the front side 11 of the cylinder block than the second cylinder 162 . The cylinder water jacket cavity further includes a third cylinder water jacket cavity 1632 surrounding the third cylinder 163 and a fourth cylinder water jacket cavity 1642 surrounding the fourth cylinder 164 . The cooling water pipeline also includes a third communication hole 1631 connecting the third cylinder water jacket cavity 1632 with the first water path 171 and a fourth communication hole 1641 connecting the fourth cylinder water jacket cavity 1642 with the first water path 171 . The diameter of the first communication hole 1611 is equal to the diameter of the third communication hole 1631 , and the diameter of the second communication hole 1621 is equal to the diameter of the fourth communication hole 1641 .

The second water passage 172 is not communicated with the water jacket cavity of the cylinder, and the third water passage 173 is not communicated with the water jacket cavity of the cylinder. This arrangement allows the cooling water passage to flow through the cylinder water jacket cavity and move up and into the cylinder head to form a water passage (not shown). At the same time, the cooling water flowing out from the water pump 3 moves around the cylinder through the cooling water path, and enters the water pump 3 again to form another water path, so that the cylinder block 1 can have a better cooling effect. Although there are four cylinders in this embodiment, other numbers of cylinders also fall within the protection scope of the present invention.

10 to 16 , the oil pump 7 rotates to suck the oil in the oil pan (not shown) into the oil passage on the cylinder block 1 through the oil filter 6 . The cylinder block 1 is also provided with an oil suction port 1811 located on the intake side 13 for sucking lubricating oil and connected to the oil collecting filter 6 . The mounting seat 6 is provided with a first connecting passage 623 connecting the oil passages of the intake side 13 and the exhaust side 14 and a second connecting passage 611 connecting the oil collecting filter 6 with the oil suction port 1811 . Preferably, the first connection channel 623 and the second connection channel 611 are arranged vertically. The oil suction port 1811 is located on the intake side 13 (FIG. 5).

An oil filter (not shown) is provided on the intake side 13 , and an oil cooler 4 is provided on the exhaust side 14 . The cylinder block 1 includes a first oil passage 182 that flows into the oil filter, a second oil passage 183 that flows out of the oil filter and is connected to the first connection passage 623 , and flows into the oil cooler 4 and is connected to the first connection passage 623 The third oil passage 184 and the fourth oil passage 188 flowing out from the oil cooler 4 and connected to the main oil passage 185 . The fourth oil passage 188 is arranged perpendicular to the main oil passage 185 . The first oil passage 182, the second oil passage 183 and the third oil passage 184 are all "L"-shaped, the second oil passage 183 and the third oil passage 184 are located in the same plane, and the plane where the first oil passage 182 is located is the same as the first oil passage 182. The planes where the second oil passage 183 and the third oil passage 184 are located are perpendicular to each other.

The first oil passage 182 includes a first longitudinal section 1821 with a central axis parallel to the first central axis 1941 and a first transverse section 1822 perpendicular to the first longitudinal section 1821 and extending to the intake side 13 and communicating with the oil filter. The second oil passage 183 includes a second transverse section 1832 flowing into the cylinder block 1 from the oil filter, and a first vertical section 1831 extending perpendicularly and downwardly to the second transverse section 1832 and connected to the first connecting passage 623 . The third oil passage 184 includes a second vertical section 1841 that flows into the cylinder block 1 from the first connecting passage 623 and a third transverse section 1842 that is perpendicular to the second vertical section and flows into the oil cooler 4 . The extending direction of the fourth oil passage 188 is perpendicular to the first central axis 1941 and is laterally arranged. The fourth oil passage 188 connects the oil cooler 4 and the main oil passage 185 , so that the oil (or lubricating oil) in the oil cooler 4 flows into the main oil passage 185 through the main oil passage 185 . Since cooling water flows through the oil cooler 4 , the cooling water can cool the oil flowing through the oil cooler 4 . One end of the first connecting channel 623 is provided with a vertically extending first extension section 621 , and the other end is provided with a vertically extending second extension section 622 . The first extension section 621 is connected with the second vertical section 1841 , and the second extension section 622 is connected with the first vertical section 1831 .

The cylinder block 1 further includes a first branch oil passage 1862 connecting the main oil passage 185 and the camshaft mounting hole 191 , a second branch oil passage 1862 connecting the main oil passage 185 and the crankshaft mounting hole 194 , and a second branch oil passage 1862 . 1862 A third branch oil passage 1863 connecting with the second balance shaft mounting hole 192 and a fourth branch oil passage (not shown) connecting the main oil passage 185 and the first balance shaft mounting hole 193 . The first branch oil passage 1861, the second branch oil passage 1862, and the third branch oil passage 1863 are located on the same plane. The central axes of the first branch oil passage 1861 and the second branch oil passage 1862 are located on the same straight line and are inclined. The diameters of the first branch oil passage 1861 and the second branch oil passage 1862 are the same, so that the first branch oil passage 1861 and the second branch oil passage 1862 can be processed at one time. The central axis of the third branch oil passage 1863 is located in the lateral direction. Since the fourth branch oil passage and the third branch oil passage 1863 are not located on the same plane, the fourth branch oil passage cannot be seen in the cross-sectional view in FIG. 11 .

The cylinder block 1 is further provided with a vertically arranged fifth oil passage 181 , and an oil suction port 1811 is provided at the end of the fifth oil passage 181 . The other end of the fifth oil passage 181 is connected to the oil pump 7 . When the oil pump 7 is working, the oil in the oil pan (not shown) first flows into the oil filter, then flows into the second connecting channel 611 on the mounting seat 6, then flows into the vertical section 612, and then flows into the fifth oil circuit within 181. The vertical section 612 can be regarded as a part of the second connection channel 611 . Next, the oil flows into the oil pump 7 , and the oil flowing out of the oil pump 7 flows into the first oil passage 182 . The oil flowing out of the first oil passage 182 flows into an oil filter (not shown), and then, the oil flowing out of the oil filter flows into the second oil passage 183 . Next, the oil in the second oil passage 183 flows into the first connection passage 623 and then flows into the third oil passage 184 . The oil in the third oil passage 184 flows into the oil cooler 4 , and the oil flowing out of the oil cooler 4 flows into the fourth oil passage 188 , and then enters the main oil passage 185 . The main oil passage 185 is arranged in the longitudinal direction, and the oil in the main oil passage 185 flows into the crankshaft mounting hole 194, the camshaft mounting hole 191, the first balance shaft mounting hole 193 and the second balance shaft mounting hole respectively through the branch oil passages, to lubricate the parts.

The mounting seat 6 is of a square arrangement. The mounting base 6 includes a connecting rod 61 , a second connecting rod 62 connected with the first connecting rod 62 and arranged vertically, a third connecting rod 63 connected with the first connecting rod 62 and arranged vertically, and a second connecting rod 62 connected with the second connecting rod 62 and arranged vertically. A fourth link 64 arranged vertically and a fifth link 65 connecting the first link 61 and the fourth link 64 . The first link 61 , the second link 62 , the fourth link 64 and the third link 63 are connected in sequence to form a square. One end of the fifth link 65 is connected to the midpoint of the first link 61 , and the other end is connected to the midpoint of the fourth link 64 . The first connecting channel 623 is provided on the second link 62 , and the second connecting channel 611 is set on the first link 61 . The first link 61 and the fourth link 64 are arranged in parallel, and the second link 62 , the third link 63 and the fifth link 65 are arranged in parallel. One end of the oil collecting filter 5 is fixed to the first connecting rod 61 by means of assembly. Although the mounting seat 6 in this embodiment is the above-mentioned configuration, in other embodiments, it can also be configured in other forms, such as a triangle.

Since the temperature of the intake side 13 of the cylinder block 1 is lower than the temperature of the exhaust side 14 , the components are installed on the intake side of the cylinder block 1 as much as possible. Since the installation area on the intake side is limited, installing the oil cooler on the exhaust side of the cylinder block can reduce the number of components installed on the intake side and save the installation area. The oil flowing through the oil cooler 4 is cooled by introducing cooling water into the oil cooler 4 . A cooling water circuit surrounding the cylinder 16 is provided to cool the cylinder 16 . A cooling water circuit surrounding the cylinder 16 is provided to cool the cylinder 16 . By arranging the oil cooler 4 on the exhaust side, the limited body space can be fully utilized, the oil cooling area can be increased, and the cylinder block of the cooling water circulation can be reasonably distributed, so that the engine can obtain a better cooling effect.

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

Claims (11)

1. A cylinder block assembly for an engine, the cylinder block assembly comprising a cylinder block provided with an intake side, an exhaust side, a front side of the cylinder block and a rear side of the cylinder block, characterized in that the cylinder block comprises A crankshaft mounting hole located between the intake side and the exhaust side and provided with a first central axis, a main oil passage with the central axis parallel to the first central axis, and an oil suction port for sucking in lubricating oil, the oil suction port and the main oil passages are respectively located on opposite sides of the crankshaft mounting hole. 2 . The cylinder block assembly according to claim 1 , further comprising an oil filter located under the cylinder block and a mounting seat for fixing the oil filter to the cylinder block, the mounting seat having A first connection passage communicating with the oil passages on the air side and the exhaust side, and a second connection passage communicating the oil collecting filter with the oil suction port. 3 . The cylinder block assembly of claim 2 , wherein the first connecting passage and the second connecting passage are vertically arranged and separated. 4 . 4 . The cylinder block assembly of claim 2 , wherein the main oil passage is located on the exhaust side, the oil suction port is located on the intake side, and the cylinder block further comprises an oil filter disposed on the intake side. 5 . The cylinder block includes a first oil circuit flowing into the oil filter, a second oil circuit flowing out from the oil filter and connected to the first connecting channel, and the inflow oil The cooler is a third oil circuit connected with the first connecting passage, and the fourth oil circuit flows out from the oil cooler and is connected with the main oil passage. 5 . The cylinder block assembly of claim 4 , wherein the first oil passage, the second oil passage and the third oil passage are all “L” shaped, and the second oil passage and the third oil passage are all “L” shaped. 6 . The circuits are located in the same plane, and the plane where the first oil circuit is located is perpendicular to the plane where the second oil circuit and the third oil circuit are located. 6 . The cylinder block assembly according to claim 5 , wherein the plane on which the second oil passage and the third oil passage are located is perpendicular to the first central axis. 7 . 7 . The cylinder block assembly according to claim 1 , wherein the cylinder block further comprises a first balance shaft mounting hole with a central axis parallel to the first central axis, a central axis and a first central axis. 8 . A parallel second balance shaft mounting hole and a camshaft mounting hole with a central axis parallel to the first central axis are provided. The first balance shaft mounting hole, the camshaft mounting hole and the main oil passage are located on the same side of the cylinder block, so The second balance shaft mounting hole and the main oil passage are located on opposite sides of the cylinder block. 8 . The cylinder block assembly of claim 7 , wherein the camshaft installation hole is located above the main oil passage, and the first balance shaft installation hole is located below the main oil passage. 9 . 9 . The cylinder block assembly according to claim 7 , wherein the cylinder block further comprises a first branch oil circuit connecting the main oil gallery and the camshaft mounting hole, and a first branch oil circuit connecting the main oil gallery and the crankshaft mounting hole. 10 . The second branch oil circuit, the first branch oil circuit and the second branch oil circuit are located on the same plane. 10. The cylinder block assembly of claim 9, wherein the cylinder block further comprises a third branch oil circuit connecting the second branch oil circuit and the second balance shaft mounting hole, the third branch oil circuit The road and the first branch oil circuit are located on the same plane. 11. An engine comprising the cylinder block assembly of any one of claims 1-10.

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