Engine cylinder block and cylinder head integrated assembly for hybrid vehicles

Abstract

This invention relates to the field of engine cylinder blocks and cylinder heads, specifically disclosing an integrated engine cylinder block and cylinder head assembly for hybrid vehicles. It solves the problems of easy cylinder head gasket failure between the cylinder block and cylinder head, difficulty in maintaining preload due to different cylinder block and cylinder head materials, mismatched thermal deformation, and reliance on a single cylinder head gasket leading to secondary failures in existing engines. The proposed solution includes: cylinder block, cylinder head, cylinder, bolt holes, water passages, oil passages, sealing groove one, sealing groove two, sealing ring one, sealing ring two, sealing groove, hollow metal ring, bolts, ring seat, ring platform, slide block, loosening detection component, top seat, adjustment component, and drive component. The drive component controls the sliding movement of the slide block. This assembly adapts to thermal deformation, maintains constant preload, provides multi-media zoned sealing, isolates faults, and can detect and seal sealing failures in real time. It has a high degree of intelligence, reduces overall cost and weight, and extends engine life.

Description

Technical Field

[0001] This invention relates to the field of engine block and cylinder head, and in particular to an integrated engine block and cylinder head assembly for hybrid vehicles. Background Technology

[0002] Traditional engine blocks and cylinder heads are separate structures, connected by cylinder head gaskets and bolts. This technology has the following main disadvantages:

[0003] High risk of seal failure: The cylinder head gasket needs to seal the combustion gases, coolant, and lubricating oil simultaneously. Under the repeated impact of high-temperature and high-pressure combustion gases and the alternating heat and engine loads, the cylinder head gasket is highly susceptible to ablation, crushing, or loss of elasticity, leading to leaks of gas, coolant, and oil. Cylinder head gasket failure is one of the most common engine malfunctions.

[0004] Preload is difficult to maintain: The cylinder block and cylinder head materials (such as cast iron cylinder block and aluminum alloy cylinder head) have a large difference in thermal expansion coefficients. During the engine's hot and cold cycles, the bolt preload changes significantly - the preload decreases when hot, the sealing contact pressure is insufficient, and fretting leakage occurs.

[0005] Thermal deformation mismatch: The cylinder block and cylinder head undergo uneven thermal expansion at operating temperatures, causing warping deformation at their joint surfaces. Traditional rigid bolt connections cannot adapt to this deformation, exacerbating local overload or loosening of the cylinder head gasket.

[0006] Insufficient structural redundancy: Existing technology relies on a single cylinder head gasket to achieve multi-media sealing. Once the cylinder head gasket fails partially, it often leads to serious secondary failures such as oil-water mixing and fuel gas entering the cooling system.

[0007] Therefore, an integrated engine block and cylinder head assembly for hybrid vehicles is proposed. Summary of the Invention

[0008] To overcome the shortcomings of existing technologies, this invention proposes an integrated cylinder block and cylinder head assembly for hybrid vehicles, which solves the problems of easy cylinder head gasket failure between the cylinder block and cylinder head, difficulty in maintaining preload due to different cylinder block and cylinder head materials, mismatch in thermal deformation, and reliance on a single cylinder head gasket for sealing, which can easily lead to secondary failures.

[0009] To solve the above-mentioned technical problems, the basic technical solution proposed by this invention is as follows:

[0010] An integrated cylinder block and cylinder head assembly for hybrid vehicles includes a cylinder block, a cylinder head, and a cylinder. The cylinder block and cylinder head have corresponding bolt holes, water passages, and oil passages. A sealing groove 1 and a sealing groove 2 are respectively formed on the outer side of the water passages and oil passages. A sealing ring 1 and a sealing ring 2 are respectively fitted in the sealing groove 1 and the sealing groove 2 to seal the water passages and oil passages between the cylinder block and the cylinder head. A sealing groove is formed on the outer side of the cylinder on the upper end face of the cylinder block. A hollow metal ring is fitted in the sealing groove. Bolts are connected in the bolt holes between the cylinder block and the cylinder head.

[0011] A ring seat is fitted on the outer side of the upper end of the cylinder block, and a ring platform is fitted on the upper end of the ring seat. A slide block is slidably disposed inside the ring platform, and a looseness detection component is provided on the slide block. The looseness detection component is used to detect the axial slippage of the cylinder head relative to the cylinder block. Multiple top seats are provided on the cylinder block to abut against the upper end of the cylinder head. An adjustment component is provided on the ring platform to adjust the degree of abutment of the top seats against the cylinder head. A drive component is also provided on the ring platform to control the sliding movement of the slide block.

[0012] Preferably, a limiting sleeve is fitted on the outer side of each bolt hole on the upper end face of the cylinder head, and a washer is fitted on the lower inner wall of the limiting sleeve, and a disc spring is provided on the upper end of the washer, which is fitted on the outer side of the bolt and abuts against the upper end of the bolt.

[0013] Preferably, the cross-section of the hollow metal ring is C-shaped or Ω-shaped, and the upper end face of the cylinder body is also provided with a convex ring that is sleeved on the outside of the sealing groove and abuts against the lower end face of the cylinder head. A gas passage is opened between the sealing groove and each cylinder.

[0014] Preferably, the lower end face of the cylinder head has a multi-point sealing detection groove, and an explosion-proof airtightness detector is installed in the sealing detection groove.

[0015] Preferably, the loosening detection component includes a mounting plate and a roller. The mounting plate is connected to the slide block near the cylinder body. The roller is installed at the lower end of the mounting plate, and a pressure sensor is installed at the rotatable connection between the roller and the mounting plate. A platform is provided on the outer edge of the lower end of the cylinder head, and the roller rolls on the upper surface of the platform.

[0016] Preferably, the ring seat is bolted to the outer side of the upper end face of the cylinder block, the ring platform is located above the cylinder block and outside the cylinder head, and a slide is provided on the ring platform, in which the slide seat slides.

[0017] Preferably, the adjustment assembly includes a sleeve frame, a sliding plate, a mounting bracket, a mounting seat, a lead screw, a square groove, a push rod motor, an explosion-proof servo motor, and a square seat. The sleeve frames are installed in pairs on the front and rear ends of the left and right sides of the cylinder head. The sliding plates are slidably fitted into each sleeve frame on the same side. The front and rear ends of the sliding plates are rotatably connected to rotating plates. The mounting brackets are arranged parallel to each other on the front and rear sides above the cylinder head. Both ends of each mounting bracket are rotatably connected to the upper ends of the rotating plates on the left and right sides. The top seat is equally spaced on the lower end face of the mounting bracket. The mounting seat is connected to the inner walls of the left and right sides of the cylinder head. The lead screw is rotatably fitted into the mounting seat on its respective side. The square groove is opened at the lower end of the lead screw. The push rod motor is mounted on the sliding seat. The explosion-proof servo motor is mounted on the upper output end of the push rod motor. The square seat is connected to the upper output end of the explosion-proof servo motor and is inserted into the square groove.

[0018] Preferably, each of the upper and lower inner walls of the sleeve is connected to a guide rod, and the slide plate is also slidably sleeved on the outside of the guide rod. A spring sleeved on the outside of the guide rod is connected between the lower end face of the slide plate and the lower inner wall of the sleeve.

[0019] Preferably, the drive assembly includes small sprockets and a chain. The small sprockets are arranged in multiple ways and are rotatably mounted on the upper surface of the ring platform along the contour of the ring platform. The chain is fitted around the outside of each small sprocket, and the lower end of the slide is connected to a segment of the chain.

[0020] Preferably, an opening is provided on one side of the ring platform, and a mounting platform is connected to the outside of the opening. A drive shaft is rotatably mounted on the mounting platform, and a large sprocket is mounted on the upper part of the drive shaft on the mounting platform. One side of the large sprocket extends through the opening into the ring platform and meshes with the outside of the chain.

[0021] The beneficial effects of this invention are:

[0022] 1. The technical solution of this invention achieves independent sealing of the water passage and oil passage by respectively opening a sealing groove 1 and a sealing groove 2 on the outer side of the water passage and oil passage at the end face where the cylinder block and cylinder head meet, and installing sealing ring 1 and sealing ring 2 in them. This allows each sealing ring to be arranged independently and without interference, undertaking only the static sealing task of oil and water, unaffected by the impact of combustion gas pressure, significantly improving working conditions and reliability. Simultaneously, a sealing groove is also opened on the upper end face of the cylinder block on the outer side of the cylinder, and a hollow metal ring is installed in the sealing groove, so that when the cylinder head is installed, the lower end face of the cylinder head will... It will come into contact with the hollow metal ring, causing the ring to undergo slight elastic deformation, forming an initial seal. A small-diameter gas channel is opened at the bottom of the sealing groove, which is connected to the cylinder combustion chamber. During the engine combustion stroke, high-pressure gas enters the inner cavity of the hollow metal ring through the gas channel. The gas pressure acts on the inner wall of the ring, causing the ring to expand outward and radially press against the bottom surface of the cylinder head and the side wall of the sealing groove. The higher the gas pressure, the greater the expansion force, and the sealing contact pressure increases linearly, realizing the self-tightening effect of "the higher the pressure, the tighter the seal". It achieves independent sealing with excellent results.

[0023] 2. The technical solution of the present invention connects a limiting cylinder to the outside of the corresponding bolt hole at the upper end of the cylinder head. A washer and a disc spring are installed inside the limiting cylinder. Then the bolt is installed. The upper end of the bolt will be squeezed against the disc spring to obtain the required initial preload. When the engine is working, the cylinder head will have axial displacement relative to the cylinder block due to thermal expansion. The disc spring allows the cylinder head to float slightly along the bolt axis (e.g., ±0.2mm) while continuously providing an almost constant clamping force to compensate for the relaxation of the preload caused by the difference in thermal expansion. When the cylinder head is cold, the disc spring maintains the initial compression. When the cylinder head moves upward, it further compresses the disc spring. The increase in spring force is limited to avoid overload. Conversely, when the cylinder head shrinks, the disc spring rebounds to maintain the minimum sealing pressure.

[0024] 3. The technical solution of this invention controls the slide block to move along the slide rail inside the ring platform. The rollers at the bottom of the mounting bracket on the slide block will then move along the outer side of the lower end of the cylinder head. When one side of the cylinder head becomes loose and tilts, the pressure sensor at the connection between the rollers and the mounting bracket will detect an anomaly. This allows the slide block to move to the lower end of the mounting bracket on the loose side, and the push rod motor to move upwards, driving the explosion-proof servo motor and the square seat upwards. The square seat then inserts into the square slot at the lower end of the lead screw that passes through the mounting bracket. Controlling the explosion-proof servo motor causes the lead screw to rotate, which in turn causes the sliding plate with its threaded sleeve to move downwards. This, in turn, pulls the mounting bracket and its lower top seat downwards via a rotating plate. This causes multiple top seats on the rotating lead screw side to move downwards more significantly than the top seats on the other side where the lead screw is not rotating, thus achieving contact and pressing against the loose cylinder head on that side. This intelligent control improves engine operating stability. Attached Figure Description

[0025] Figure 1This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a cross-sectional view of the front structure of the present invention;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0029] Figure 5 This is a sectional view of the side structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the structure of the cylinder body and its upper end face of the present invention;

[0031] Figure 7 This is an arrangement diagram of sealing ring one, sealing ring two, and the hollow metal ring of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of the hollow metal ring of the present invention;

[0033] Figure 9 This is a cross-sectional view of the front view of the hollow metal ring structure of the present invention;

[0034] Figure 10 This is a schematic diagram of the relevant structures on the ring platform of the present invention;

[0035] Figure 11 This is a schematic diagram of the relevant structures on the cylinder head of the present invention;

[0036] Figure 12 This is a bottom view of the lower end face of the cylinder head of the present invention.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Cylinder block; 2. Cylinder head; 3. Cylinder; 4. Bolt hole; 5. Water passage; 6. Sealing groove one; 7. Sealing ring one; 8. Oil passage; 9. Sealing groove two; 10. Sealing ring two; 11. Sealing groove; 12. Hollow metal ring; 13. Raised ring; 14. Limiting sleeve; 15. Washer ring; 16. Disc spring; 17. Bolt; 18. Sealing detection groove; 19. Ring seat; 20. Ring platform; 21. Slide rail; 22. Slide block; 23. 24. Small sprocket; 25. Chain; 26. Opening; 27. Mounting platform; 28. Large sprocket; 29. ​​Drive shaft; 30. Sleeve; 31. Slide plate; 32. Guide rod; 33. Spring; 34. Turning plate; 35. Mounting bracket; 36. Top seat; 37. Mounting base; 38. Lead screw; 39. Square groove; 40. Mounting plate; 41. Roller; 42. Push rod motor; 43. Explosion-proof servo motor; 44. Square seat; 45. Gas passage. Detailed Implementation

[0039] The following will be combined with the appendix Figure 1 To be continued Figure 12 The technical solutions in the embodiments of the present invention have been clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1: As Figures 1-12 As shown, the present invention discloses an integrated cylinder block and cylinder head assembly for a hybrid vehicle, including a cylinder block 1, a cylinder head 2, and a cylinder 3. The cylinder block 1 and the cylinder head 2 are provided with corresponding bolt holes 4, water passages 5 and oil passages 8. Sealing groove 1 6 and sealing groove 2 9 are respectively provided on the outer side of the water passages 5 and the oil passages 8. Sealing ring 1 7 and sealing ring 2 10 are respectively fitted in the sealing groove 1 6 and sealing groove 2 9 to seal the water passages 5 and the oil passages 8 between the cylinder block 1 and the cylinder head 2. A sealing groove 11 is provided on the outer side of the cylinder 3 on the upper end face of the cylinder block 1. A hollow metal ring 12 is fitted in the sealing groove 11. Bolts 17 are connected in the bolt holes 4 between the cylinder block 1 and the cylinder head 2.

[0041] A ring seat 19 is fitted on the outer side of the upper end of the cylinder block 1, and a ring platform 20 is fitted on the upper end of the ring seat 19. A slide seat 22 is slidably arranged inside the ring platform 20, and a looseness detection component is provided on the slide seat 22. The looseness detection component is used to detect the axial sliding of the cylinder head 2 relative to the cylinder block 1. Multiple top seats 35 are provided on the cylinder block 1 to abut against the upper end of the cylinder head 2. An adjustment component is provided on the ring platform 20 to adjust the degree of abutment of the top seats 35 against the cylinder head 2. A drive component is also provided on the ring platform 20 to control the movement and sliding of the slide seat 22.

[0042] By connecting a limiting sleeve 14 to the outside of the bolt hole 4 at the upper end of the cylinder head 2, a washer 15 and a disc spring 16 are fitted inside the limiting sleeve 14, and then the bolt 17 is installed. The upper head of the bolt 17 will then be pressed against the disc spring 16 to obtain the required initial preload. When the engine is running, the cylinder head 2 will have axial displacement relative to the cylinder block 1 due to thermal expansion. The disc spring 16 allows the cylinder head 2 to float slightly along the axial direction of the bolt 17 (e.g., ±0.2mm), while continuously providing an almost constant clamping force to compensate for the relaxation of the preload caused by the difference in thermal expansion. When the cylinder head 2 is cold, the disc spring 16 maintains initial compression. When the cylinder head 2 moves upward, it further compresses the disc spring 16. The increase in spring force is limited to avoid overload. Conversely, when the cylinder head 2 is cold and shrinks, the disc spring 16 rebounds to maintain minimum sealing pressure.

[0043] A limiting sleeve 14 is fitted on the outer side of each bolt hole 4 on the upper end face of the cylinder head 2. A washer 15 is fitted on the lower inner wall of the limiting sleeve 14, and a disc spring 16 is provided on the upper end of the washer 15, which is fitted on the outer side of the bolt 17 and abuts against the upper end of the bolt 17.

[0044] The cross-section of the hollow metal ring 12 is C-shaped or Ω-shaped. The upper end face of the cylinder body 1 is also provided with a convex ring 13 that is sleeved on the outside of the sealing groove 11 and abuts against the lower end face of the cylinder head 2. A gas passage 44 is provided between the sealing groove 11 and each cylinder 3. The convex ring 13 can prevent the cylinder head 2 from excessively squeezing the upper end face of the cylinder body 1, which would damage the hollow metal ring 12 or the sealing ring 7 and the sealing ring 10.

[0045] The lower end face of the cylinder head 2 has a multi-point sealing detection groove 18, and an explosion-proof air tightness detector is installed in the sealing detection groove 18. In addition to the rolling detection of looseness by the roller 40, it adds air tightness detection points to detect the failure of the seal in time and improve the operational stability.

[0046] By creating sealing groove 6 and sealing groove 9 on the outer sides of the water passage 5 and oil passage 8 at the joint between cylinder block 1 and cylinder head 2, respectively, and installing sealing ring 7 and sealing ring 10 within them, independent sealing of water passage 5 and oil passage 8 is achieved. This ensures that each sealing ring is independently arranged and does not interfere with each other, undertaking only the static sealing task of oil and water, unaffected by the pressure impact of combustion gas, significantly improving working conditions and reliability. Simultaneously, a sealing groove 11 is created on the upper end face of cylinder block 1, located outside cylinder 3, and a hollow metal ring 12 is installed within the sealing groove 11. This ensures that when cylinder head 2 is installed, the lower end face of cylinder head 2 will be flush with the cylinder head 2. The hollow metal ring 12 comes into contact with the cylinder, causing a slight elastic deformation of the ring body, forming an initial seal. The bottom of the sealing groove 11 has a small-diameter gas channel 44, which is connected to the combustion chamber of the cylinder 3. During the combustion stroke of the engine, high-pressure gas enters the inner cavity of the hollow metal ring 12 through the gas channel 44. The gas pressure acts on the inner wall of the ring, causing the ring body to expand outward and radially press against the bottom surface of the cylinder head 2 and the side wall of the sealing groove 11. The higher the gas pressure, the greater the expansion force, and the sealing contact pressure increases linearly, realizing the self-tightening effect of "the higher the pressure, the tighter the seal". This achieves independent sealing with excellent results.

[0047] Example 2: Figures 1-12 As shown, the present invention discloses an integrated engine block and cylinder head assembly for hybrid vehicles. Compared with Embodiment 1, this embodiment discloses the structure of a loosening detection component.

[0048] The loosening detection component includes a mounting plate 39 and a roller 40. The mounting plate 39 is connected to the slide block 22 on the side near the cylinder body 1. The roller 40 is installed at the lower end of the mounting plate 39, and a pressure sensor is installed at the rotational connection between the roller 40 and the mounting plate 39. A platform is provided on the lower outer edge of the cylinder head 2, and the roller 40 rolls on the upper surface of the platform.

[0049] The ring seat 19 is fitted onto the outer side of the upper end face of the cylinder block 1 by bolts 17. The ring platform 20 is located above the cylinder block 1 and outside the cylinder head 2. A slide 21 is provided on the ring platform 20, and the slide seat 22 slides in the slide 21.

[0050] By controlling the slide block 22 to slide along the slide rail 21, the roller 40 at the lower end of the mounting plate 39 can be driven to roll on the platform set on the outer edge of the lower end of the cylinder head 2. When one side of the cylinder head 2 loosens and lifts relative to the cylinder body 1, the cylinder head 2 and the roller 40 are squeezed together, so that the pressure sensor between the roller 40 and the mounting plate 39 detects the pressure or real-time loosening data.

[0051] Example 3: Figures 1-12 As shown, the present invention discloses an integrated engine block and cylinder head assembly for hybrid vehicles. Compared with Embodiment 2, this embodiment discloses the structure of the adjustment component.

[0052] The adjustment assembly includes a sleeve 29, a sliding plate 30, a mounting bracket 34, a mounting base 36, a lead screw 37, a square groove 38, a push rod motor 41, an explosion-proof servo motor 42, and a square base 43. The sleeves 29 are installed in pairs on the front and rear ends of the left and right sides of the ring platform 20. The sliding plates 30 are slidably fitted into each sleeve 29 on the same side. The front and rear ends of the sliding plates 30 are rotatably connected to rotating plates 33. The mounting brackets 34 are located on the front and rear sides above the cylinder head 2 and are arranged parallel to each other. Each mounting bracket 34 has two ends... The top seat 35 is rotatably connected to the upper end of the left and right rotating plates 33. The top seat 35 is equally spaced on the lower end face of the mounting bracket 34. The mounting seat 36 is connected to the inner wall of the left and right sides of the ring platform 20. The lead screw 37 is rotated and fitted into the mounting seat 36 on each side. The square slot 38 is opened at the lower end of the lead screw 37. The push rod motor 41 is mounted on the slide seat 22. The explosion-proof servo motor 42 is mounted on the upper output end of the push rod motor 41. The square seat 43 is connected to the upper output end of the explosion-proof servo motor 42 and is inserted into the square slot 38.

[0053] Each frame 29 has guide rods 31 connected to its upper and lower inner walls. The slide plate 30 is also slidably sleeved on the outside of the guide rods 31. A spring 32 sleeved on the outside of the guide rods 31 is connected between the lower end face of the slide plate 30 and the lower inner wall of the frame 29.

[0054] By controlling the slide block 22 to move along the slide rail 21 within the ring platform 20, the roller 40 at the bottom of the mounting plate 39 on the slide block 22 will move along the outer side of the lower end of the cylinder head 2. When one side of the cylinder head 2 becomes loose and tilts up, the pressure sensor at the connection between the roller 40 and the mounting plate 39 will detect the abnormality. This will allow the slide block 22 to move to the lower end of the mounting seat 36 on the loose side, and control the push rod motor 41 to move upward, driving the explosion-proof servo motor 42 and the square seat 43 to move upward. This will cause the square seat 43 to connect with the mounting seat 36. The square slot 38 at the lower end of the lead screw 37 is inserted into the screw, and the explosion-proof servo motor 42 is controlled to rotate the lead screw 37. This causes the sliding plate 30, which is threaded onto its outer side, to move downwards. The rotating plate 33 then pulls the mounting bracket 34 and its lower top seat 35 downwards. This causes the multiple top seats 35 on the side of the rotating lead screw 37 to move downwards more than the top seats 35 on the side of the non-rotating lead screw 37. This achieves contact and tightening of the loose cylinder head 2 on this side, realizing intelligent control and improving the engine's operational stability.

[0055] Example 4: Figures 1-12 As shown, the present invention discloses an integrated engine block and cylinder head assembly for hybrid vehicles. Compared with Embodiment 3, this embodiment discloses the structure of the drive assembly.

[0056] The drive assembly includes small sprockets 23 and a chain 24. Multiple small sprockets 23 are arranged and are rotatably mounted on the upper surface of the ring platform 20 along the contour of the ring platform 20. The chain 24 is fitted on the outside of each small sprocket 23. The lower end of the slide block 22 is connected to a segment of the chain 24.

[0057] An opening 25 is provided on one side of the ring platform 20, and a mounting platform 26 is connected to the outside of the opening 25. A drive shaft 28 is rotatably mounted on the mounting platform 26, and a large sprocket 27 is mounted on the upper end of the drive shaft 28 on the mounting platform 26. One side of the large sprocket 27 extends through the opening 25 into the ring platform 20 and meshes with the outside of the chain 24.

[0058] This allows the large sprocket 27 to rotate via the external transmission device connected to the transmission shaft 28, which in turn drives the chain 24 to rotate and slide against the slide block 22 through meshing.

[0059] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. An integrated cylinder block and cylinder head assembly for a hybrid vehicle, comprising a cylinder block (1), a cylinder head (2), and a cylinder (3), wherein the cylinder block (1) and the cylinder head (2) are provided with corresponding bolt holes (4), water passages (5), and oil passages (8), characterized in that, The water passage (5) and oil passage (8) are respectively provided with a sealing groove 1 (6) and a sealing groove 2 (9). The sealing groove 1 (6) and the sealing groove 2 (9) are respectively fitted with a sealing ring 1 (7) and a sealing ring 2 (10) to seal the water passage (5) and oil passage (8) between the cylinder body (1) and the cylinder head (2). The upper end face of the cylinder body (1) is provided with a sealing groove (11) on the outside of the cylinder (3). A metal hollow ring (12) is fitted in the sealing groove (11). A bolt (17) is connected in the bolt hole (4) between the cylinder body (1) and the cylinder head (2). The cylinder body (1) is fitted with a ring seat (19) on the outer side of the upper end, and a ring platform (20) is fitted on the upper end of the ring seat (19). A slide seat (22) is slidably arranged inside the ring platform (20), and a loosening detection component is provided on the slide seat (22). The loosening detection component is used to detect the axial sliding of the cylinder head (2) relative to the cylinder body (1). The cylinder body (1) is provided with multiple top seats (35) that abut against the upper end of the cylinder head (2). An adjustment component is provided on the ring platform (20). The adjustment component is used to adjust the degree of abutment of the top seats (35) against the cylinder head (2). A drive component is also provided on the ring platform (20). The drive component is used to control the sliding of the slide seat (22).

2. The integrated engine block and cylinder head assembly for hybrid vehicles according to claim 1, characterized in that, The upper end face of the cylinder head (2) is fitted with a limiting sleeve (14) on the outside of each bolt hole (4). The inner wall of the limiting sleeve (14) is fitted with a washer (15), and the upper end of the washer (15) is provided with a disc spring (16) fitted on the outside of the bolt (17) and abutting against the upper end of the bolt (17).

3. The integrated engine block and cylinder head assembly for hybrid vehicles according to claim 1, characterized in that, The cross-section of the hollow metal ring (12) is C-shaped or Ω-shaped. The upper end face of the cylinder body (1) is also provided with a convex ring (13) that is sleeved on the outside of the sealing groove (11) and abuts against the lower end face of the cylinder cover (2). A gas passage (44) is opened between the sealing groove (11) and each cylinder (3).

4. The integrated engine block and cylinder head assembly for hybrid vehicles according to claim 1, characterized in that, The cylinder head (2) has a multi-point sealing detection groove (18) on its lower end face, and an explosion-proof airtightness detector is installed in the sealing detection groove (18).

5. The integrated engine block and cylinder head assembly for hybrid vehicles according to claim 1, characterized in that, The loosening detection component includes a mounting plate (39) and a roller (40). The mounting plate (39) is connected to the slide (22) on the side near the cylinder (1). The roller (40) is installed at the lower end of the mounting plate (39), and a pressure sensor is installed at the rotational connection between the roller (40) and the mounting plate (39). A platform is provided on the lower outer edge of the cylinder head (2), and the roller (40) is rolled on the upper surface of the platform.

6. The integrated engine block and cylinder head assembly for hybrid vehicles according to claim 5, characterized in that, The ring seat (19) is fitted onto the outer side of the upper end face of the cylinder body (1) by bolts (17). The ring platform (20) is located above the cylinder body (1) and outside the cylinder head (2). A slide (21) is provided on the ring platform (20), and the slide seat (22) slides in the slide (21).

7. The integrated engine block and cylinder head assembly for hybrid vehicles according to claim 1, characterized in that, The adjustment assembly includes a sleeve frame (29), a sliding plate (30), a mounting bracket (34), a mounting seat (36), a lead screw (37), a square groove (38), a push rod motor (41), an explosion-proof servo motor (42), and a square seat (43). The sleeve frames (29) are installed in pairs on the front and rear ends of the left and right sides of the ring platform (20). The sliding plate (30) is slidably fitted into each sleeve frame (29) on the same left and right side. The front and rear ends of the sliding plate (30) are rotatably connected to a rotating plate (33). The mounting bracket (34) is set on the front and rear sides above the cylinder head (2) and is arranged parallel to each other. Each mounting bracket (34) has two ends. All are rotatably connected to the upper end of the left and right rotating plates (33). The top seat (35) is connected at equal intervals to the lower end face of the mounting frame (34). The mounting seat (36) is connected to the inner wall of the left and right sides of the ring platform (20). The lead screw (37) is rotatably fitted into the mounting seat (36) on its respective side. The square groove (38) is opened at the lower end of the lead screw (37). The push rod motor (41) is mounted on the slide (22). The explosion-proof servo motor (42) is mounted on the upper output end of the push rod motor (41). The square seat (43) is connected to the upper output end of the explosion-proof servo motor (42) and is inserted into the square groove (38).

8. The integrated engine block and cylinder head assembly for hybrid vehicles according to claim 7, characterized in that, Each of the frame frames (29) has a guide rod (31) connected to its upper and lower inner walls. The slide plate (30) is also slidably sleeved on the outside of the guide rod (31). A spring (32) sleeved on the outside of the guide rod (31) is connected between the lower end face of the slide plate (30) and the lower inner wall of the frame frame (29).

9. The integrated engine block and cylinder head assembly for hybrid vehicles according to claim 1, characterized in that, The drive assembly includes small sprockets (23) and a chain (24). The small sprockets (23) are arranged in multiple ways and are rotatably mounted on the upper surface of the ring platform (20) along the contour of the ring platform (20). The chain (24) is fitted on the outside of each small sprocket (23). The lower end of the slide (22) is connected to a segment of the chain (24).

10. The integrated engine block and cylinder head assembly for hybrid vehicles according to claim 9, characterized in that, An opening (25) is provided on one side of the ring platform (20), and a mounting platform (26) is connected to the outside of the opening (25). A drive shaft (28) is rotatably mounted on the mounting platform (26), and a large sprocket (27) is mounted on the upper end of the drive shaft (28) on the mounting platform (26). One side of the large sprocket (27) extends through the opening (25) into the ring platform (20) and meshes with the outside of the chain (24).

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