Vehicle engine system and vehicle
By directly connecting the EGR cooler to the water jacket, the problems of low integration and high cost of the engine system are solved, achieving higher pipeline integration and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING SOKON POWER CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-03
AI Technical Summary
The current configuration of connecting the EGR cooler to the water pump results in low integration of the engine system and high cost.
The EGR cooler is directly connected to the water jacket cavity, and the coolant is circulated through the water jacket outlet and inlet channel, reducing the number of pipe connections.
It improves the integration of the engine system's piping, meeting the needs of product miniaturization and reducing costs.
Smart Images
Figure CN224452922U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vehicle engine technology, specifically to a vehicle engine system and a vehicle. Background Technology
[0002] EGR (Exhaust Gas Recirculation) technology is one of the core technologies for energy saving and emission reduction in modern internal combustion engines. By reintroducing a portion of the exhaust gas from the engine into the combustion chamber, the combustion temperature is lowered, thereby reducing nitrogen oxide (NOx) emissions and improving fuel efficiency. An EGR system includes an EGR cooler, where the exhaust gas from the engine is directly cooled before being reintroduced into the engine block for fuel combustion.
[0003] In related technologies, the EGR cooler is connected to a water pump via a long pipe to supply coolant. However, this setup results in low integration of the engine system and high cost. Utility Model Content
[0004] In view of the above problems, this application provides a vehicle engine system and vehicle, which can achieve a higher degree of pipeline integration of the engine system by directly connecting the EGR cooler to the water jacket cavity, so as to meet the needs of product miniaturization and reduce costs.
[0005] The first aspect of this application provides a vehicle engine system, including: a cylinder block with a water jacket cavity for containing coolant, a water jacket outlet on the side wall of the cylinder block communicating with the water jacket cavity; a cylinder head disposed on the top of the cylinder block, with a water inlet channel communicating with the water jacket cavity; and an EGR cooler with an EGR inlet and an EGR outlet, the EGR inlet communicating with the water jacket outlet and the EGR outlet communicating with the water inlet channel, wherein coolant in the water jacket cavity is discharged into the EGR cooler through the water jacket outlet and returned to the water jacket cavity through the water inlet channel.
[0006] In some specific embodiments, the water jacket cavity includes an air inlet side sub-cavity and an exhaust side sub-cavity. The exhaust side sub-cavity is provided with a water jacket water supply port, the air inlet side sub-cavity is provided with a water jacket drain port, the water jacket water outlet is connected to the exhaust side sub-cavity, and the water inlet channel is connected to the air inlet side sub-cavity.
[0007] In some specific embodiments, the water jacket outlet is located in the middle or upper part of the cylinder body in the height direction, the water inlet channel extends downward in the height direction of the cylinder body, and the bottom of the water inlet channel is connected to the top of the water jacket cavity.
[0008] In some specific embodiments, the water inlet channel is disposed on the first side wall of the cylinder head opposite to the EGR cooler, and the water jacket outlet is disposed on the second side wall of the cylinder block. The first side wall is adjacent to the intake side wall of the cylinder head, and the second side wall is opposite to the intake side wall.
[0009] In some specific embodiments, the vehicle engine system also includes an EGR inlet pipe and an EGR outlet pipe, with the two ends of the EGR inlet pipe connected to the water jacket outlet and the EGR inlet respectively, and the two ends of the EGR outlet pipe connected to the EGR outlet and the inlet channel respectively.
[0010] In some specific embodiments, the EGR cooler is located on one side of the cylinder head, the EGR outlet pipe is located above the EGR cooler, the EGR inlet pipe is located below the EGR cooler, the EGR outlet is lower than the top of the inlet channel, and the EGR inlet is higher than the water jacket outlet.
[0011] In some specific embodiments, the intake end of the EGR cooler is located near the outlet of the cylinder head, and the intake end of the EGR cooler is inclined downward relative to the horizontal direction of the cylinder block, so that the condensate formed in the EGR cooler flows into the intake end of the EGR cooler and is evaporated.
[0012] In some specific embodiments, the EGR inlet is located near the outlet of the EGR cooler, the EGR outlet is located near the inlet of the EGR cooler, and the distance between the EGR inlet and the EGR outlet along the length of the EGR cooler is greater than a preset distance.
[0013] In some specific embodiments, the vehicle engine system also includes a catalyst and an air guide assembly. The catalyst is connected to the outlet of the cylinder head and the inlet of the EGR cooler, and the air guide assembly is connected to the inlet of the cylinder head and the outlet of the EGR cooler, respectively.
[0014] A second aspect of this application provides a vehicle including a vehicle engine system as described in any of the above claims.
[0015] This application has at least the following beneficial effects: The vehicle engine system and vehicle provided by this application include: a cylinder block with a water jacket cavity for containing coolant, a water jacket outlet on the side wall of the cylinder block communicating with the water jacket cavity; a cylinder head located on top of the cylinder block, with a water inlet channel communicating with the water jacket cavity; and an EGR cooler with an EGR inlet and an EGR outlet, the EGR inlet communicating with the water jacket outlet and the EGR outlet communicating with the water inlet channel. Coolant in the water jacket cavity is discharged to the EGR cooler through the water jacket outlet and returned to the water jacket cavity through the water inlet channel. Therefore, by directly connecting the EGR cooler to the water jacket cavity, the piping integration of the engine system can be improved, meeting the needs of product miniaturization and reducing costs.
[0016] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the vehicle engine system provided in this application;
[0019] Figure 2 yes Figure 1 The front view of the vehicle's engine system shown;
[0020] Figure 3 yes Figure 1 The rear view of the vehicle's engine system is shown.
[0021] Figure 4 yes Figure 1 A top view of the vehicle's engine system shown;
[0022] Figure 5 yes Figure 1 The diagram shows the structural schematic of the integral structure formed by the cylinder block and cylinder head of the vehicle engine system.
[0023] Figure 6 yes Figure 5 A schematic diagram of the structure shown from another perspective;
[0024] Figure 7 yes Figure 5 Enlarged structural diagram of region A in the middle;
[0025] Figure 8 yes Figure 4 The structure shown is a cross-sectional view along section line AA;
[0026] Figure 9 yes Figure 2 The structure shown is a cross-sectional view along section line BB;
[0027] Figure 10 yes Figure 9 An enlarged structural diagram of region B in the diagram.
[0028] Explanation of reference numerals in the attached drawings: vehicle engine system 100, cylinder block 10, water jacket cavity 11, intake side sub-cavity 111, exhaust side sub-cavity 112, water jacket outlet 12, second side wall 13, cylinder head 20, water inlet passage 21, water inlet passage pipe 22, pipe port 221, intake side passage 231, exhaust side passage 232, first side wall 24, intake side wall 25, EGR cooler 30, EGR inlet 31, EGR outlet 32, EGR inlet pipe 41, EGR outlet pipe 42, air guide assembly 50.
[0029] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0031] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0032] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0033] This application provides a vehicle engine system 100 in a first aspect. Figure 1 This is a schematic diagram of the structure of one embodiment of the vehicle engine system 100 provided in this application. Figure 2 yes Figure 1 The diagram shows a front view of the vehicle engine system 100. Figure 3 yes Figure 1 The rear view of the vehicle engine system 100 shown is shown. Figure 4 yes Figure 1 The vehicle engine system 100 shown is a top view.
[0034] Combination Figures 1-4 The vehicle engine system 100 includes a cylinder block 10, a cylinder head 20, and an EGR cooler 30. The cylinder head 20 is located on top of the cylinder block 10, and the cylinder block 10 and the cylinder head 20 can be integrally molded to form a single structure. Figure 2 In the overall structure, the portion above the dashed line L is the cylinder head 20, and the portion below it is the cylinder block 10. The EGR cooler 30 can be located on one side of the integrated structure formed by the cylinder head 20 and the cylinder block 10, specifically on the upper middle side of this integrated structure. The cylinder block 10 contains cylinders, and outside air can be introduced into the cylinders to mix with the fuel inside for combustion. The cylinder head 20 can be provided with an intake port and an exhaust port, allowing outside air to enter the cylinders of the cylinder block 10 through the intake port and allowing exhaust gases from the cylinders to be discharged to the outside through the exhaust port.
[0035] It should be understood that during the exhaust gas utilization process, part of the exhaust gas discharged from the cylinder head 20 will be introduced into the EGR cooler 30. After being cooled by the EGR cooler 30, the exhaust gas will be introduced into the intake manifold of the engine, where it will mix with the fresh air in the intake manifold to form a mixture. The mixture will then be introduced into the cylinder of the cylinder block 10 through the cylinder head 20.
[0036] Figure 5 yes Figure 1 This is a schematic diagram of the overall structure formed by the cylinder block 10 and cylinder head 20 of the vehicle engine system 100. Figure 6 yes Figure 5 A schematic diagram of the structure shown from another perspective. Figure 7 yes Figure 5 A magnified schematic diagram of the structure of region A in the middle.
[0037] Combination Figures 5-7 The cylinder block 10 is provided with a water jacket cavity 11 for containing coolant, and a water jacket outlet 12 is provided on the side wall of the cylinder block 10, which communicates with the water jacket cavity 11. The water jacket cavity 11 is connected to the vehicle's engine cooling circuit, allowing coolant to be introduced into it. The water jacket cavity 11 mainly surrounds the outside of the cylinder of the cylinder block 10, thereby cooling the engine system through heat exchange between the coolant and related cylinder components. The water jacket outlet 12 communicates with the water jacket cavity 11, allowing the coolant within the water jacket cavity 11 to be introduced into other components through the water jacket outlet 12.
[0038] Figure 8 yes Figure 4 The structure shown is a cross-sectional view along section line AA.
[0039] Continue to combine Figure 6 as well as Figure 8 The cylinder head 20 is provided with a water inlet channel 21, which communicates with the water jacket cavity 11. The water inlet channel 21 can be located inside the side wall of the cylinder head 20 and extend on the side wall of the cylinder head 20. Figure 6 In some application scenarios, a water inlet pipe 22 can be integrated on the side wall of the cylinder head 20. The water inlet pipe 22 is hollow to form a water inlet channel 21, and a pipe opening 221 is provided at the top of the water inlet pipe 22. The water inlet channel 21 is connected to other devices through the pipe opening 221.
[0040] Combination Figure 2 as well as Figure 6 The EGR cooler 30 is provided with an EGR inlet 31 and an EGR outlet 32. The EGR inlet 31 is connected to the water jacket outlet 12, and the EGR outlet 32 is connected to the water inlet channel 21. The coolant in the water jacket cavity 11 is discharged into the EGR cooler 30 through the water jacket outlet 12 and returned to the water jacket cavity 11 through the water inlet channel 21.
[0041] It should be understood that the EGR inlet 31 and the water jacket outlet 12 can be directly connected, or indirectly connected through other structures; the indirect connection is shown in the figure. Similarly, the EGR outlet 32 and the inlet channel 21 can also be connected directly or indirectly; the indirect connection is shown in the figure. In summary, the connection between the EGR outlet 32 and the inlet channel 21 means that the EGR outlet 32 is connected to the pipe opening 221 of the inlet channel pipe 22.
[0042] Based on this connection method, the coolant in the water jacket cavity 11 is discharged into the EGR cooler 30 through the water jacket outlet 12 and the EGR inlet 31, and then returned to the water jacket cavity 11 through the EGR outlet 32 and the inlet channel 21. Compared with related technologies that connect the EGR cooler 30 to the water pump, this reduces the number of connecting pipes between the EGR cooler 30 and the water pump, resulting in a higher degree of integration of the engine system piping, meeting the needs of product miniaturization and reducing costs.
[0043] Combination Figures 5-7 In some specific embodiments, the water jacket cavity 11 includes an air inlet side sub-cavity 111 and an exhaust side sub-cavity 112. The exhaust side sub-cavity 112 is provided with a water jacket water supply port, and the air inlet side sub-cavity 111 is provided with a water jacket drain port.
[0044] It should be understood that the intake side sub-chamber 111 and the exhaust side sub-chamber 112 can be located on two sides of the cylinder block 10 in the horizontal direction, which can be the left and right sides of the cylinder block 10. The intake side sub-chamber 111 and the exhaust side sub-chamber 112 may not be connected in the cylinder block 10, but can be connected through the cylinder head 20. For example, a connecting channel can be provided on the cylinder head 20 to connect the intake side sub-chamber 111 and the exhaust side sub-chamber 112. The water jacket supply port of the exhaust side sub-chamber 112 is connected to the engine cooling circuit, and the water jacket drain port of the intake side sub-chamber 111 is also connected to the engine cooling circuit. This allows the coolant in the engine cooling circuit to enter the exhaust side sub-chamber 112 through the water jacket supply port, and the coolant in the intake side sub-chamber 111 to be discharged into the engine cooling circuit through the water jacket drain port.
[0045] Combination Figure 5 As mentioned above, the cylinder head 20 is provided with an intake side passage 231 and an exhaust side passage 232. External gas is introduced into the cylinder of the cylinder block 10 through the intake side passage 231, and the exhaust gas generated by combustion in the cylinder is discharged to the outside through the exhaust side passage 232. At this time, the intake side sub-chamber 111 is located close to the intake side passage 231, and the exhaust side sub-chamber 112 is located close to the exhaust side passage 232.
[0046] Figure 9 yes Figure 2The structure shown is a cross-sectional view along section line BB. Figure 10 yes Figure 9 An enlarged structural diagram of region B in the diagram.
[0047] Combination Figure 9 as well as Figure 10 The water jacket outlet 12 is connected to the exhaust side sub-chamber 112. Furthermore, the water inlet channel 21 is connected to the intake side sub-chamber 111. By connecting the water jacket outlet 12 to the exhaust side sub-chamber 112 and the water inlet channel 21 to the intake side sub-chamber 111, cooler coolant can be introduced into the EGR cooler 30 through the water jacket outlet 12, while coolant with higher temperature after heat exchange can be introduced into the intake side sub-chamber 111 through the water inlet channel 21.
[0048] Combination Figure 6 In some specific embodiments, the water jacket outlet 12 is located in the middle or upper part of the cylinder body 10 in the height direction, and the water inlet channel 21 extends downward in the height direction of the cylinder body 10, with the bottom of the water inlet channel 21 communicating with the top of the water jacket cavity 11. The middle and upper parts of the cylinder body 10 refer to the portion above the centerline in the height direction of the cylinder body 10, with the upper part located above the middle part. The top of the water inlet channel 21 can be located at the top of the cylinder head 20, and the bottom of the water inlet channel 21 can be located at the bottom of the cylinder head 20.
[0049] Regarding the specific locations of the water inlet channel 21 and the water jacket outlet 12, combined with Figure 6 In some specific embodiments, the water inlet channel 21 is disposed on the first side wall 24 opposite to the cylinder head 20 and the EGR cooler 30, and the water jacket outlet 12 is disposed on the second side wall 13 of the cylinder block 10. The first side wall 24 is adjacent to the intake side wall 25 of the cylinder head 20, and the second side wall 13 is opposite to the intake side wall 25.
[0050] Specifically, the first sidewall 24 is spaced apart from the EGR cooler 30, the water inlet passage 21 extends within the first sidewall 24, and an air inlet is provided on the intake sidewall 25 of the cylinder head 20, allowing external gas to be introduced into the cylinder head 20 from the intake sidewall 25. When the first sidewall 24 and the intake sidewall 25 are adjacent, they can form an angle of approximately 90 degrees. The second sidewall 13 of the cylinder block 10 is opposite to the intake sidewall 25, that is, the second sidewall 13 of the cylinder block 10 is located below the exhaust sidewall of the cylinder head 20.
[0051] Combination Figure 1 as well as Figure 2In some specific embodiments, the vehicle engine system 100 further includes an EGR inlet pipe 41 and an EGR outlet pipe 42. The two ends of the EGR inlet pipe 41 are connected to the water jacket outlet 12 and the EGR inlet 31, respectively. The two ends of the EGR outlet pipe 42 are connected to the EGR outlet 32 and the inlet channel 21, respectively. At this time, the coolant discharged from the water jacket outlet 12 enters the EGR inlet pipe 41, and the coolant in the EGR inlet pipe 41 further enters the EGR cooler 30 through the EGR inlet 31. The coolant in the EGR cooler 30 is introduced from the EGR outlet 32 into the EGR outlet pipe 42, and the coolant in the EGR outlet pipe 42 is further introduced into the inlet channel 21.
[0052] Regarding the arrangement of the EGR cooler 30 and its corresponding piping, in some specific embodiments, combined with... Figure 2 as well as Figure 6 The EGR cooler 30 is located on one side of the cylinder head 20, that is, above the cylinder block 10. The EGR outlet pipe 42 is located above the EGR cooler 30, and the EGR inlet pipe 41 is located below the EGR cooler 30. The EGR outlet 32 is lower than the top of the inlet channel 21, and the EGR inlet 31 is higher than the water jacket outlet 12. This arrangement allows for a compact layout of the EGR cooler 30, EGR inlet pipe 41, and EGR outlet pipe 42, further reducing the required space and piping configuration. This results in a higher degree of integration of the vehicle engine system 100's piping, meeting the needs of product miniaturization and reducing costs.
[0053] Regarding the specific layout of the EGR cooler 30, combined with Figure 2 , Figure 5 as well as Figure 6 In some specific embodiments, the intake end of the EGR cooler 30 is located near the exhaust port of the cylinder head 20, that is, near the exhaust passage 232 of the cylinder head 20. The intake end of the EGR cooler 30 is inclined downward relative to the horizontal direction of the cylinder block 10, so that the condensate formed in the EGR cooler 30 flows into the intake end of the EGR cooler 30 and is evaporated.
[0054] It should be understood that condensation may form inside the intercooler due to exhaust gas condensation, especially in certain scenarios where the amount of condensation is significant. This condensation risks being drawn into the engine block 10. Excessive condensation entering the engine block 10 can reduce engine combustion efficiency and potentially damage the engine. In this embodiment, by tilting the intake end of the EGR cooler 30 downwards relative to the horizontal direction of the engine block 10, the condensation formed in the EGR cooler 30 can flow into the intake end and evaporate, effectively reducing the amount of condensation drawn into the engine block 10. In some applications, the downward tilt angle of the intake end of the EGR cooler 30 relative to the horizontal direction of the engine block 10 can be smaller, such as 5° or 10°.
[0055] Regarding the specific layout of the EGR inlet 31 and the EGR outlet 32, combined with Figure 2 In some specific embodiments, the EGR inlet 31 is positioned near the outlet of the EGR cooler 30, and the EGR outlet 32 is positioned near the inlet of the EGR cooler 30. The distance between the EGR inlet 31 and the EGR outlet 32 along the length of the EGR cooler 30 is greater than a preset distance. This arrangement allows the coolant to achieve better heat dissipation for the exhaust gas within the EGR cooler 30.
[0056] Regarding the configuration of other structures in the vehicle engine system 100, in conjunction with Figure 1 as well as Figure 2 In some specific embodiments, the vehicle engine system 100 also includes a catalyst (not shown) and an air guide assembly 50. The catalyst is connected to the outlet of the cylinder head 20 and the inlet of the EGR cooler 30, and the air guide assembly 50 is connected to the inlet of the cylinder head 20 and the outlet of the EGR cooler 30, respectively.
[0057] It should be understood that the exhaust gas exiting from the cylinder head 20 enters the catalytic converter, which treats the exhaust gas produced after engine combustion, converting harmful exhaust gases into gases with much lower toxicity. Since the catalytic converter and the EGR cooler 30 are connected at their inlets, some of the exhaust gas treated by the catalytic converter is introduced into the EGR cooler 30. Furthermore, the exhaust gas exiting from the EGR cooler 30's outlet enters the cylinder block 10 through the air guide assembly 50.
[0058] A second aspect of this application provides a vehicle including a vehicle engine system 100 as described in any of the above embodiments. For a detailed description of the vehicle engine system 100, please refer to the relevant content of the above embodiments, which will not be repeated here.
[0059] In summary, the vehicle engine system 100 and vehicle provided in this application include: a cylinder block 10, which is provided with a water jacket cavity 11 for containing coolant, and a water jacket outlet 12 is provided on the side wall of the cylinder block 10, which is connected to the water jacket cavity 11; a cylinder head 20, which is provided on the top of the cylinder block 10, and a water inlet channel 21 is provided on the cylinder head 20, which is connected to the water jacket cavity 11; and an EGR cooler 30, which is provided with an EGR inlet 31 and an EGR outlet 32, which are connected to the water jacket outlet 12 and the EGR outlet 32 are connected to the water inlet channel 21. The coolant in the water jacket cavity 11 is discharged to the EGR cooler 30 through the water jacket outlet 12 and returned to the water jacket cavity 11 through the water inlet channel 21. Therefore, by directly connecting the EGR cooler 30 to the water jacket 11, the piping integration of the vehicle engine system 100 can be improved, meeting the needs of product miniaturization and reducing costs.
[0060] The above description is merely an optional embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.
Claims
1. A vehicle engine system characterized by, include: The cylinder body is provided with a water jacket cavity for containing coolant, and the side wall of the cylinder body is provided with a water jacket outlet, which is connected to the water jacket cavity. A cylinder head is disposed on the top of the cylinder block, and a water inlet channel is provided on the cylinder head, which is connected to the water jacket cavity; The EGR cooler is provided with an EGR inlet and an EGR outlet. The EGR inlet is connected to the water jacket outlet, and the EGR outlet is connected to the inlet channel. The coolant in the water jacket cavity is discharged into the EGR cooler through the water jacket outlet and returned to the water jacket cavity through the inlet channel.
2. The vehicle engine system according to claim 1, characterized in that, The water jacket cavity includes an air inlet side sub-cavity and an exhaust side sub-cavity. The exhaust side sub-cavity is provided with a water jacket water supply port, the air inlet side sub-cavity is provided with a water jacket drain port, the water jacket water outlet is connected to the exhaust side sub-cavity, and the water inlet channel is connected to the air inlet side sub-cavity.
3. The vehicle engine system according to claim 1, characterized in that, The water jacket outlet is located in the middle or upper part of the cylinder body in the height direction, the water inlet channel extends downward in the height direction of the cylinder body, and the bottom of the water inlet channel is connected to the top of the water jacket cavity.
4. The vehicle engine system according to claim 1, characterized in that, The water inlet channel is located on the first side wall of the cylinder head opposite to the EGR cooler, and the water jacket outlet is located on the second side wall of the cylinder block. The first side wall is adjacent to the intake side wall of the cylinder head, and the second side wall is opposite to the intake side wall.
5. The vehicle engine system according to claim 1, characterized in that, The vehicle engine system also includes an EGR inlet pipe and an EGR outlet pipe. The two ends of the EGR inlet pipe are connected to the water jacket outlet and the EGR inlet, respectively, and the two ends of the EGR outlet pipe are connected to the EGR outlet and the water inlet channel, respectively.
6. The vehicle engine system according to claim 4, characterized in that, The EGR cooler is located on one side of the cylinder head, the EGR outlet pipe is located above the EGR cooler, the EGR inlet pipe is located below the EGR cooler, the EGR outlet is lower than the top of the inlet channel, and the EGR inlet is higher than the water jacket outlet.
7. The vehicle engine system according to claim 1, characterized in that, The intake end of the EGR cooler is located near the outlet of the cylinder head, and the intake end of the EGR cooler is inclined downward relative to the horizontal direction of the cylinder block, so that the condensate formed in the EGR cooler flows into the intake end of the EGR cooler and is evaporated.
8. The vehicle engine system according to claim 7, characterized in that, The EGR inlet is located near the outlet of the EGR cooler, and the EGR outlet is located near the inlet of the EGR cooler. The distance between the EGR inlet and the EGR outlet along the length of the EGR cooler is greater than a preset distance.
9. The vehicle engine system according to claim 7, characterized in that, The vehicle engine system also includes a catalyst and an air guide assembly. The catalyst is connected to the outlet of the cylinder head and the inlet of the EGR cooler. The air guide assembly is connected to the inlet of the cylinder head and the outlet of the EGR cooler, respectively.
10. A vehicle, characterized in that, Includes the vehicle engine system as described in any one of claims 1-9.