Engine cooling system and automobile
By integrating water jacket components and simplifying piping connections, the complexity and inefficiency of existing engine cooling systems have been resolved, resulting in a compact structure and efficient thermal management for the engine cooling system.
Patent Information
- Application Number
- CN202520767674.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-22
AI Technical Summary
Existing engine cooling systems suffer from problems such as complex piping, large space occupation, long coolant circulation path, large energy loss, rapid component wear, low reliability, and high cost.
An integrated water jacket assembly is adopted, including a cylinder block water jacket, a cylinder head water jacket, and an external water jacket, which simplifies the pipeline connection. The external water jacket connects components on different sides of the engine block, reduces unnecessary pipe length, and optimizes coolant flow through a throttling structure and multiple circulation modes.
This achieves a compact engine cooling system structure, reduces energy loss and component wear, improves system reliability and thermal management efficiency, and meets different thermal management requirements.
Smart Images
Figure CN223938136U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive thermal management technology, and in particular to an engine cooling system and an automobile. Background Technology
[0002] The primary function of the engine cooling system is to ensure that the engine remains within a suitable operating temperature range under various operating conditions. This not only helps improve engine performance and efficiency but also extends its service life and reduces the occurrence of malfunctions.
[0003] Existing engine cooling systems have complex piping, with various components distributed on different sides of the engine block. The inlet and outlet water pipes for each component are arranged separately, resulting in complex piping that occupies a large space, has a long coolant circulation path, causes significant energy loss, leads to rapid component wear, has low reliability, and is costly. Utility Model Content
[0004] Based on this, the present invention provides an engine cooling system and an automobile, which can save on long pipes and has a simple and compact structure.
[0005] According to an embodiment of the present invention, a first aspect provides an engine cooling system, including a first water pump, a water-cooled jacket assembly, a thermostat, a radiator, a heater module, an oil cooler, an EGR cooler, and a turbocharger.
[0006] The water-cooling jacket assembly includes a cylinder block water jacket, a cylinder head water jacket, and an external water jacket; the outlet of the first water pump is sequentially connected to the cylinder block water jacket, the cylinder head water jacket, and the thermostat; the thermostat is sequentially connected to the inlet of the first water pump via a first pipe, the radiator, and a second pipe; the thermostat is sequentially connected to the inlet of the first water pump via a third pipe, the heater module, and a fourth pipe; a fifth pipe is provided on the third pipe and connected to the inlet of the first water pump; the fifth pipe is provided with a first throttling structure.
[0007] The outlet of the cylinder block water jacket is connected to the inlet of the first water pump in sequence through the oil cooler, the EGR cooler and the external water jacket. The outlet of the cylinder block water jacket is also connected to the inlet of the external water jacket through the booster.
[0008] In some embodiments, the cylinder head water jacket is provided with a cylinder head degassing pipe connected to an expansion tank, and a second throttling structure is provided on the cylinder head degassing pipe; the heater module is provided with a heater degassing pipe connected to the expansion tank, and a third throttling structure is provided on the heater degassing pipe; the radiator is provided with a heat dissipation degassing pipe connected to the expansion tank, and a fourth throttling structure is provided on the heat dissipation degassing pipe; the expansion tank is provided with a replenishment pipe connected to the inlet of the first water pump.
[0009] In some embodiments, the outlet end of the warm air degassing pipe is connected to the cylinder head degassing pipe, and the warm air degassing pipe is located on the outlet end side of the second throttling structure.
[0010] In some embodiments, a one-way valve is provided on the inlet side of the second throttling structure.
[0011] In some embodiments, the heating module includes a second water pump, a heating core, and a bypass pipe, wherein the second water pump and the heating core are connected in series, and the second water pump and the heating core are connected in parallel with the bypass pipe;
[0012] The inlet of the second water pump and the inlet of the bypass pipe are connected to the third pipe, and the outlet of the warm air core and the outlet of the bypass pipe are connected to the fourth pipe through a proportional three-way valve.
[0013] In some embodiments, the warm air degassing pipe is connected between the warm air core of the warm air module and the proportional three-way valve.
[0014] In some embodiments, the heating module further includes a resistance heater disposed between the second water pump and the heating core.
[0015] In some embodiments, the inlet of the thermostat is directly connected to the outlet of the cylinder head water jacket.
[0016] In some embodiments, the inlet of the oil cooler is directly connected to the outlet of the cylinder block water jacket.
[0017] In some embodiments, the second aspect provides a vehicle that includes the aforementioned engine cooling system.
[0018] By adopting the technical solution of this utility model, the engine cooling system has an external water jacket in the water jacket assembly. This external water jacket can connect the EGR cooler, turbocharger and first water pump located on different sides of the engine block. This helps to eliminate long pipes between components in different locations, making the structure of the engine cooling system simpler and more compact. Moreover, the engine cooling system can realize multiple coolant circulation modes to meet different thermal management needs. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the first circulation mode of the engine cooling system in this embodiment;
[0020] Figure 2 This is a schematic diagram of the second circulation method of the engine cooling system in this embodiment;
[0021] Figure 3This is a schematic diagram of the third circulation mode of the engine cooling system in this embodiment;
[0022] Figure 4 This is a schematic diagram of the fourth circulation mode of the engine cooling system in this embodiment;
[0023] Figure 5 This is a schematic diagram of the fifth circulation mode of the engine cooling system in this embodiment;
[0024] Figure 6 This is a schematic diagram of the sixth circulation mode of the engine cooling system in this embodiment;
[0025] Figure 7 This is a schematic diagram of the seventh circulation method of the engine cooling system in this embodiment;
[0026] Figure 8 This is a schematic diagram of the circulation mode eight of the engine cooling system in this embodiment.
[0027] In the diagram: 10 First water pump; 11 First pipe; 12 Second pipe; 13 Third pipe; 14 Fourth pipe; 15 Fifth pipe; 16 Temperature sensor; 17 Transition joint; 20 Cylinder block water jacket; 21 Cylinder head water jacket; 22 External water jacket; 30 Thermostat; 40 Oil cooler; 50 EGR cooler; 60 Radiator; 70 Heater module; 71 Heater core; 72 Second water pump; 73 Bypass pipe; 74 Resistance heater; 75 Proportional three-way valve; 80 Turbocharger; 90 Expansion tank; 91 Cylinder head degassing pipe; 92 Heater degassing pipe; 93 Cooling degassing pipe; 94 Fluid replenishment pipe; 95 First throttling structure; 96 Second throttling structure; 97 Third throttling structure; 98 Fourth throttling structure; 99 Check valve. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0029] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.
[0030] The orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "middle," "longitudinal," "transverse," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification are based on the orientations or positional relationships shown in the accompanying drawings and are only for the purpose of simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0031] like Figures 1 to 8 As shown, this embodiment provides an engine cooling system for automobiles, which includes a first water pump 10, a water-cooled jacket assembly, an oil cooler 40, an EGR cooler 50, a thermostat 30, a radiator 60, a heater module 70, a turbocharger 80, and an expansion tank 90.
[0032] The water-cooling jacket assembly of this embodiment includes a cylinder block water jacket 20, a cylinder head water jacket 21, and an external water jacket 22. The external water jacket 22 is integrated on the outside of the cylinder block and can extend to different sides of the cylinder block as needed. The outlet of the first water pump 10 is connected to the inlet of the cylinder block water jacket 20, the outlet of the cylinder block water jacket 20 is connected to the inlet of the cylinder head water jacket 21, and the outlet of the cylinder head water jacket 21 is connected to the inlet of the thermostat 30. The outlet of the thermostat 30 is connected to the inlet of the radiator 60 through a first pipe 11, and the outlet of the radiator 60 is connected to the inlet of the first water pump 10 through a second pipe 12. On the other hand, the outlet of the thermostat 30 is connected to the inlet of the heating module 70 through the third pipe 13, and the outlet of the heating module 70 is connected to the inlet of the first water pump 10 through the fourth pipe 14. The thermostat 30 can control the flow of coolant through the radiator 60 or the heating module 70.
[0033] In this embodiment, a fifth pipe 15 is provided on the third pipe 13 and connected to the inlet of the first water pump 10. The fifth pipe 15 is equipped with a first throttling structure 95, which can increase the pressure difference for the heating module 70, increase the flow rate of coolant through the heating module 70, and improve the heating comfort and heating speed of the passenger compartment. In this embodiment, the fifth pipe 15 is preferably connected to the outlet side of the external water jacket 22 to reduce the material used in the pipe. A temperature sensor 16 is also provided on the third pipe 13. The temperature sensor 16 is specifically located on the inlet side of the fifth pipe 15. The temperature sensor 16 can detect the temperature of the coolant to ensure the thermal management effect of the engine cooling system.
[0034] In this embodiment, the inlet of the oil cooler 40 is connected to the outlet of the cylinder head water jacket 20, the outlet of the oil cooler 40 is connected to the inlet of the EGR cooler 50, the outlet of the EGR cooler 50 is connected to the inlet of the external water jacket 22, and the outlet of the external water jacket 22 is connected to the inlet of the first water pump 10. In this embodiment, the inlet of the thermostat 30 can be directly connected to the outlet of the cylinder head water jacket 21, and the inlet of the oil cooler 40 can be directly connected to the outlet of the cylinder head water jacket 20, eliminating unnecessary bends and branches. It should be noted that the direct connection method specifically involves one interface fitting snugly against the other, with a sealing ring between the two interfaces to prevent leakage. This simple connection method reduces heat loss and resistance during transmission.
[0035] In this embodiment, the inlet of the turbocharger 80 is connected to the outlet of the cylinder block water jacket 20, and the outlet of the turbocharger 80 is connected to the inlet of the external water jacket 22. In this embodiment, the inlet side of the cylinder block water jacket 20 is preferably provided with a transition joint 17 to facilitate the connection between the outlet of the EGR cooler 50 and the outlet of the turbocharger 80.
[0036] The engine cooling system of this embodiment has an external water jacket 22 in the water jacket assembly. The external water jacket 22 can connect the EGR cooler 50, the turbocharger 80 and the first water pump 10 located on different sides of the engine block. This helps to eliminate the need for long pipes between components in different locations, making the structure of the engine cooling system simpler, more compact and easier to assemble.
[0037] In this embodiment, the cylinder head water jacket 21 is provided with a cylinder head degassing pipe 91 connected to the expansion tank 90, and a second throttling structure 96 is provided on the cylinder head degassing pipe 91; the heater module 70 is provided with a heater degassing pipe 92 connected to the expansion tank 90, and a third throttling structure 97 is provided on the heater degassing pipe 92; the radiator 60 is provided with a heat dissipation degassing pipe 93 connected to the expansion tank 90, and a fourth throttling structure 98 is provided on the heat dissipation degassing pipe 93; the expansion tank 90 is provided with a replenishment pipe 94 connected to the inlet end of the first water pump 10. The outlet end of the heater degassing pipe 92 can be selectively connected to the cylinder head degassing pipe 91, and the heater degassing pipe 92 is located on the outlet end side of the second throttling structure 96 to reduce the amount of pipe used. A one-way valve 99 is provided on the inlet end side of the second throttling structure 96 to prevent the fluid in the heat dissipation degassing pipe 93 from flowing back into the cylinder head water jacket 21. It should be noted that the aforementioned throttling structure can be provided with a throttling valve or a throttling orifice as needed.
[0038] The heating module 70 in this embodiment preferably includes a second water pump 72, a heating core 71, and a bypass pipe 73. The second water pump 72 and the heating core 71 are connected in series, and the second water pump 72 and the heating core 71 are connected in parallel with the bypass pipe 73. The inlet of the second water pump 72 and the inlet of the bypass pipe 73 are connected to a third pipe 13, and the outlet of the heating core 71 and the outlet of the bypass pipe 73 are connected to a fourth pipe 14 through a proportional three-way valve 75. A heating degassing pipe 92 is disposed between the heating core 71 and the proportional three-way valve 75. The coolant entering the heating module 70 is regulated by the proportional three-way valve 75 to adjust the ratio of the coolant flowing through the second water pump 72 and the heating core 71 to meet different requirements for cooling and heating conditions. In this embodiment, a resistance heater 74 is also disposed between the second water pump 72 and the heating core 71, which can meet the electric heating requirements of the passenger compartment.
[0039] The engine cooling system in this embodiment can achieve multiple circulation modes.
[0040] See details Figure 1 In the first circulation mode, the first water pump 10 drives the coolant to flow sequentially through the cylinder block water jacket 20, cylinder head water jacket 21, thermostat 30, third pipe 13, heater module 70 and fourth pipe 14 before returning to the first water pump 10.
[0041] See details Figure 2 In the second circulation mode, the first water pump 10 drives the coolant to flow sequentially through the cylinder block water jacket 20, the cylinder head water jacket 21, the thermostat 30, the third pipe 13 and the fifth pipe 15, and then back to the first water pump 10.
[0042] See details Figure 3 In the third circulation mode, the first water pump 10 drives the coolant to flow sequentially through the cylinder block water jacket 20, cylinder head water jacket 21, thermostat 30, third pipe 13, heater module 70, heater degassing pipe 92, expansion tank 90 and replenishment pipe 94 before returning to the first water pump 10.
[0043] See details Figure 4 In the fourth circulation mode, the first water pump 10 drives the coolant to flow sequentially through the cylinder block water jacket 20, the oil cooler 40, the EGR cooler 50 and the external water jacket 22 before returning to the first water pump 10.
[0044] See details Figure 5 In the fifth circulation mode, the first water pump 10 drives the coolant to flow sequentially through the cylinder water jacket 20, the turbocharger 80 and the external water jacket 22 before returning to the first water pump 10.
[0045] See details Figure 6In the sixth circulation mode, the first water pump 10 drives the coolant to flow sequentially through the cylinder block water jacket 20, cylinder head water jacket 21, cylinder head degassing pipe 91, expansion tank 90 and replenishment pipe 94 before returning to the first water pump 10.
[0046] See details Figure 7 In the seventh circulation mode, the first water pump 10 drives the coolant to flow sequentially through the cylinder block water jacket 20, the cylinder head water jacket 21, the thermostat 30, the first pipe 11, the radiator 60, and the second pipe 12 before returning to the first water pump 10.
[0047] See details Figure 8 In the eighth circulation mode, the first water pump 10 drives the coolant to flow sequentially through the cylinder block water jacket 20, cylinder head water jacket 21, thermostat 30, first pipe 11, radiator 60, heat dissipation and degassing pipe 93, expansion tank 90 and replenishment pipe 94 before returning to the first water pump 10.
[0048] In this embodiment, a one-way valve 99 and a second throttling structure 96 are provided on the cylinder head degassing pipe 91 to adjust the degassing flow rate and prevent heat generated by the resistance heater 74 from entering the engine water jacket through the warm air degassing pipe 92, thereby reducing heat loss. A third throttling structure 97 is provided on the warm air degassing pipe 92, and a fourth throttling structure 98 is provided on the cooling degassing pipe 93 to adjust the degassing flow rate and ensure that sufficient coolant participates in heat exchange while meeting the degassing function.
[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0050] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. An engine cooling system comprising a first water pump (10), a water-cooled jacket assembly, a thermostat (30), a radiator (60), a heater module (70), an oil cooler (40), an EGR cooler (50), and a turbocharger (80), characterized in that: The water cooling jacket assembly includes a cylinder block water jacket (20), a cylinder head water jacket (21), and an external water jacket (22). The outlet of the first water pump (10) is connected in sequence to the cylinder water jacket (20), the cylinder head water jacket (21) and the thermostat (30). The thermostat (30) is connected to the inlet of the first water pump (10) in sequence through the first pipe (11), the radiator (60) and the second pipe (12). The thermostat (30) is connected to the inlet of the first water pump (10) in sequence through the third pipe (13), the heater module (70) and the fourth pipe (14). A fifth pipe (15) is provided on the third pipe (13) and connected to the inlet of the first water pump (10). The fifth pipe (15) is provided with a first throttling structure (95). The outlet of the cylinder water jacket (20) is connected to the inlet of the first water pump (10) in sequence through the oil cooler (40), the EGR cooler (50) and the external water jacket (22). The outlet of the cylinder water jacket (20) is also connected to the inlet of the external water jacket (22) through the booster (80).
2. The engine cooling system according to claim 1, characterized in that: The cylinder head water jacket (21) is provided with a cylinder head degassing pipe (91) connected to the expansion tank (90), and a second throttling structure (96) is provided on the cylinder head degassing pipe (91); the heater module (70) is provided with a heater degassing pipe (92) connected to the expansion tank (90), and a third throttling structure (97) is provided on the heater degassing pipe (92); the radiator (60) is provided with a heat dissipation degassing pipe (93) connected to the expansion tank (90), and a fourth throttling structure (98) is provided on the heat dissipation degassing pipe (93); the expansion tank (90) is provided with a replenishment pipe (94) connected to the water inlet of the first water pump (10).
3. The engine cooling system according to claim 2, characterized in that: The outlet end of the warm air degassing pipe (92) is connected to the cylinder head degassing pipe (91), and the warm air degassing pipe (92) is located on the outlet end side of the second throttling structure (96).
4. The engine cooling system according to claim 3, characterized in that: A one-way valve (99) is provided on the inlet side of the second throttling structure (96).
5. The engine cooling system according to any one of claims 2-4, characterized in that: The heating module (70) includes a second water pump (72), a heating core (71) and a bypass pipe (73), wherein the second water pump (72) and the heating core (71) are connected in series, and the second water pump (72) and the heating core (71) are connected in parallel with the bypass pipe (73); The inlet of the second water pump (72) and the inlet of the bypass pipe (73) are connected to the third pipe (13), and the outlet of the warm air core (71) and the outlet of the bypass pipe (73) are connected to the fourth pipe (14) through a proportional three-way valve (75).
6. The engine cooling system according to claim 5, characterized in that: The warm air degassing pipe (92) is connected between the warm air core (71) of the warm air module (70) and the proportional three-way valve (75).
7. The engine cooling system according to claim 5, characterized in that: The heating module (70) also includes a resistance heater (74) disposed between the second water pump (72) and the heating core (71).
8. The engine cooling system according to any one of claims 1-4, characterized in that: The inlet of the thermostat (30) is directly connected to the outlet of the cylinder head water jacket (21).
9. The engine cooling system according to any one of claims 1-4, characterized in that: The inlet of the oil cooler (40) is directly connected to the outlet of the cylinder water jacket (20).
10. A car, characterized in that, Includes the engine cooling system according to any one of claims 1-9.