Engine cooling system and automobile
By introducing built-in water channels and direct connections into the engine cooling system, the piping structure is simplified, the complexity and energy loss of existing systems are resolved, and compact and efficient thermal management is achieved.
Patent Information
- Application Number
- CN202520485422.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-03-19
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.
The water jacket assembly with built-in water channels connects the EGR cooler, the heating module and the water pump, eliminating long pipes between components in different locations, and optimizing the cooling system structure through direct connection ports and multiple circulation methods.
This design achieves a simple and compact engine cooling system, reducing heat loss and drag, meeting different thermal management needs, improving system reliability, and reducing costs.
Smart Images
Figure CN223647911U_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 each component's inlet and outlet pipes arranged separately. This complexity results in problems such as large space occupation, long coolant circulation paths, significant energy loss, rapid component wear, low reliability, and high cost. 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, an oil cooler, an EGR cooler, a thermostat, a radiator, and a heater module.
[0006] The water cooling jacket assembly includes a cylinder head water jacket, a cylinder block water jacket, and an internal water channel, wherein the internal water channel is provided with a water channel inlet, a water channel outlet, and a bypass interface.
[0007] The outlet of the first water pump is connected to the cylinder inlet of the cylinder water jacket, the outlet of the cylinder head water jacket is connected to the inlet of the thermostat through a first pipe, the outlet of the thermostat is connected to the inlet of the radiator through a second pipe, and the outlet of the radiator is connected to the inlet of the first water pump through a third pipe.
[0008] A fourth pipe is provided on the first pipe and connected to the water inlet of the heating module. The water outlet of the heating module is connected to the water outlet through a fifth pipe. A sixth pipe is provided on the fourth pipe and connected to the bypass interface.
[0009] The inlet of the oil cooler is connected to the outlet of the cylinder block, the outlet of the oil cooler is connected to the inlet of the EGR cooler, the outlet of the EGR cooler is connected to the water channel inlet, and the water channel outlet is connected to the inlet of the first water pump.
[0010] 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;
[0011] The inlet of the second water pump and the inlet of the bypass pipe are connected to the fourth pipe, and the outlet of the heater core and the outlet of the bypass pipe are connected to the fifth pipe through a proportional three-way valve.
[0012] In some embodiments, the heating module includes a heating core, the water inlet of which is connected to the fourth pipe, and the water outlet of which is connected to the fifth pipe; a throttling structure is provided on the sixth pipe.
[0013] In some embodiments, the fourth pipe is provided with a temperature sensor, and the sixth pipe is provided on the outlet side of the temperature sensor.
[0014] In some embodiments, the system further includes a booster and an expansion tank. The booster has a booster inlet pipe connected to the cylinder water jacket at its inlet end and a booster outlet pipe connected to the expansion tank at its outlet end. The expansion tank has a water supply pipe connected to the third pipe.
[0015] In some embodiments, a degassing pipe is provided on the cylinder head water jacket and connected to the booster water outlet pipe.
[0016] In some embodiments, the oil cooler is provided with an oil cooling inlet at its inlet end, and the oil cooling inlet is directly connected to the cylinder block outlet.
[0017] In some embodiments, the EGR cooler is provided with a cooler outlet at its outlet end, and the cooler outlet is directly connected to the water inlet of the water channel.
[0018] In some embodiments, a resistance heater is further provided between the second water pump and the warm air core.
[0019] In some embodiments,
[0020] In some embodiments, the second aspect provides a vehicle that includes the aforementioned engine cooling system.
[0021] By adopting the technical solution of this utility model, the engine cooling system has a built-in water channel in the water jacket assembly. This built-in water jacket can connect the EGR cooler, the heater module and the water pump, which can eliminate the need for 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 liquid circulation modes to meet different thermal management needs. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the circulation mode one of the engine cooling system in Embodiment 1;
[0023] Figure 2 This is a schematic diagram of the second circulation method of the engine cooling system in Example 1;
[0024] Figure 3 This is a schematic diagram of the third circulation mode of the engine cooling system in Example 1;
[0025] Figure 4 This is a schematic diagram of the fourth circulation mode of the engine cooling system in Example 1;
[0026] Figure 5 This is a schematic diagram of the fifth circulation mode of the engine cooling system in Example 1;
[0027] Figure 6 This is a schematic diagram of the sixth circulation method of the engine cooling system in Embodiment 1;
[0028] Figure 7 This is a schematic diagram of the engine cooling system in Example 2.
[0029] In the diagram: 10 First water pump; 11 First pipe; 12 Second pipe; 13 Third pipe; 14 Fourth pipe; 15 Fifth pipe; 16 Sixth pipe; 17 Degassing pipe; 18 Throttling structure; 19 Temperature sensor; 20 Cylinder block water jacket; 21 Cylinder head water jacket; 22 Cylinder block water inlet; 23 Cylinder block water outlet; 24 Cylinder head water inlet; 25 Cylinder head water outlet; 26 Internal water channel; 27 Water channel inlet; 28 Water channel outlet. ; Bypass interface 29; Oil cooler 30; Oil cooler inlet 31; Oil cooler outlet pipe 32; EGR cooler 40; Cooler outlet 41; Thermostat 50; Radiator 60; Heater module 70; Heater core 71; Second water pump 72; Bypass pipe 73; Resistance heater 74; Proportional three-way valve 75; Booster 80; Booster inlet pipe 81; Booster outlet pipe 82; Expansion tank 90; Water supply pipe 91. Detailed Implementation
[0030] 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.
[0031] 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.
[0032] 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.
[0033] Example 1
[0034] like Figures 1 to 6 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 30, an EGR cooler 40, a thermostat 50, a radiator 60, a heater module 70, a turbocharger 80, and an expansion tank 90.
[0035] The water-cooling jacket assembly of this embodiment includes a cylinder head water jacket 21, a cylinder block water jacket 20, and an internal water channel 26. The cylinder block water jacket 20 is provided with a cylinder block inlet 22 and a cylinder block outlet 23, the cylinder head water jacket 21 is provided with a cylinder head inlet 24 and a cylinder head outlet 25, and the internal water channel 26 is provided with a water channel inlet 27, a water channel outlet 28, and a bypass interface 29.
[0036] In this embodiment, the outlet of the first water pump 10 is connected to the cylinder block inlet 22, and the inlet of the first water pump 10 is connected to the water channel outlet 28. In this embodiment, the inlet of the oil cooler 30 is connected to the cylinder block outlet 23, the outlet of the oil cooler 30 is connected to the inlet of the EGR cooler 40, and the outlet of the EGR cooler 40 is connected to the water channel inlet 27.
[0037] In this embodiment, the water jacket outlet is connected to the inlet of the thermostat 50 via a first pipe 11, the outlet of the thermostat 50 is connected to the inlet of the radiator 60 via a second pipe 12, and the outlet of the radiator 60 is connected to the inlet of the first water pump 10 via a third pipe 13. The thermostat 50 has a connecting valve and a shut-off valve. When the connecting valve is open, the thermostat 50 is connected to the radiator 60; when the shut-off valve is open, the thermostat 50 is disconnected from the radiator 60.
[0038] In this embodiment, a fourth pipe 14 is also provided on the first pipe 11, which is connected to the water inlet of the heater module 70. The water outlet of the heater module 70 is connected to the water outlet 28 through a fifth pipe 15. A temperature sensor 19 is also provided on the fourth pipe 14. A sixth pipe 16 is provided on the water outlet side of the temperature sensor 19, which is connected to the bypass interface 29. The temperature sensor 19 can detect the temperature of the liquid, ensuring the thermal management effect of the engine cooling system.
[0039] In this embodiment, the cylinder water jacket 20 is also connected to the inlet of the booster 80 via a booster inlet pipe 81, the outlet of the booster 80 is connected to the inlet of the expansion tank 90 via a booster outlet pipe 82, the outlet of the expansion tank 90 is connected to the third pipe 13 via a water replenishment pipe 91, and a degassing pipe 17 is provided on the cylinder head water jacket 21 and connected to the booster outlet pipe 81.
[0040] The engine cooling system in this embodiment can achieve multiple circulation modes. See details. Figure 1 In the first circulation mode, the first water pump 10 drives the liquid to flow sequentially through the cylinder water jacket 20, the cylinder head water jacket 21, the first pipe 11, the fourth pipe 14, the heater module 70 and the fifth pipe 15 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 liquid to flow sequentially through the cylinder water jacket 20, the cylinder head water jacket 21, the first pipe 11, the fourth pipe 14, the sixth pipe 16 and the built-in water channel 26 before returning to the first water pump 10.
[0042] See details Figure 3 In the third circulation mode, the first water pump 10 drives the liquid to flow sequentially through the cylinder water jacket 20, the oil cooler 30, the EGR cooler 40 and the built-in water channel 26 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 liquid to flow sequentially through the cylinder water jacket 20, the booster 80, the expansion tank 90 and the water supply pipe 91 before returning to the first water pump 10.
[0044] See details Figure 5In the fifth circulation mode, the first water pump 10 drives the liquid to flow sequentially through the cylinder water jacket 20, cylinder head water jacket 21, degassing pipe 17, expansion tank 90 and water replenishment pipe 91 before returning to the first water pump 10.
[0045] See details Figure 6 In the sixth circulation mode, the first water pump 10 drives the liquid to flow sequentially through the cylinder water jacket 20, cylinder head water jacket 21, first pipe 11, thermostat 50, second pipe 12, radiator 60 and third pipe 13 before returning to the first water pump 10.
[0046] The heating module 70 in this embodiment 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 fourth pipe 14, and the outlet of the heating core 71 and the outlet of the bypass pipe 73 are connected to a fifth pipe 15 through a proportional three-way valve 75. The proportion of liquid flowing into the heating module 70 is adjusted by the proportional three-way valve 75 to flow through the second water pump 72 and the heating core 71. In this embodiment, a resistance heater 74 is also provided between the second water pump 72 and the heating core 71, which can meet the electric heating requirements of the passenger compartment.
[0047] The engine cooling system incorporates a built-in water channel 26 within the water jacket assembly. This built-in water channel 26 connects the EGR cooler 40, the heater module 70, and the first water pump 10, eliminating the need for long pipes between components in different locations. This results in a simpler and more compact structure for the engine cooling system, facilitating assembly. The engine cooling system can also implement various liquid circulation modes to meet different thermal management requirements.
[0048] In this embodiment, the oil cooler 30 has an oil cooling inlet 31 at its inlet and an oil cooling outlet 32 at its outlet. The EGR cooler 40 has a cooler outlet 41 at its outlet. The oil cooling inlet 31 of the oil cooler 30 is directly connected to the cylinder outlet 23 of the cylinder water jacket 20, the oil cooling outlet 32 is connected to the inlet of the EGR cooler 40, and the cooler outlet 41 of the EGR cooler 40 is directly connected to the water inlet 27 of the built-in water channel 26. This embodiment directly connects the interfaces of some components, eliminating unnecessary bends and branches. Specifically, the direct connection method involves one interface fitting snugly against another, with a sealing ring between the two interfaces to prevent leakage. This simple connection method reduces heat loss and resistance loss during transmission.
[0049] Example 2
[0050] See details Figure 7The difference between this embodiment and Embodiment 1 lies in the structure of the heating module 70 and the sixth pipe 16. In this embodiment, the heating module 70 includes a heating core 71. The inlet of the heating core 71 is connected to the fourth pipe 14, and the outlet of the heating core 71 is connected to the water outlet 28 via the fifth pipe 15. The sixth pipe 16 in this embodiment is equipped with a throttling structure 18, which can be a throttling valve or a throttling orifice. Preferably, a throttling orifice is provided inside the sixth pipe 16 in this embodiment. The throttling structure 18 increases the pressure difference for the heating core 71, increasing the flow rate of liquid through the heating core 71 and improving the heating comfort and heating speed of the passenger compartment.
[0051] 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.
[0052] 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, an oil cooler (30), an EGR cooler (40), a thermostat (50), a radiator (60), and a heater module (70), characterized in that: The water cooling jacket assembly includes a cylinder head water jacket (21), a cylinder block water jacket (20), and an internal water channel (26), wherein the internal water channel (26) is provided with a water channel inlet (27), a water channel outlet (28), and a bypass interface (29). The outlet of the first water pump (10) is connected to the cylinder inlet (22) of the cylinder water jacket (20), the outlet (25) of the cylinder head water jacket (21) is connected to the inlet of the thermostat (50) through the first pipe (11), the outlet of the thermostat (50) is connected to the inlet of the radiator (60) through the second pipe (12), and the outlet of the radiator (60) is connected to the inlet of the first water pump (10) through the third pipe (13). A fourth pipe (14) is provided on the first pipe (11) and connected to the water inlet of the heating module (70). The water outlet of the heating module (70) is connected to the water outlet (28) through a fifth pipe (15). A sixth pipe (16) is provided on the fourth pipe (14) and connected to the bypass interface (29). The inlet of the oil cooler (30) is connected to the cylinder outlet (23) of the cylinder water jacket, the outlet of the oil cooler (30) is connected to the inlet of the EGR cooler (40), the outlet of the EGR cooler (40) is connected to the water inlet (27), and the water outlet (28) is connected to the inlet of the first water pump (10).
2. The engine cooling system according to claim 1, 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 fourth pipe (14), and the outlet of the warm air core (71) and the outlet of the bypass pipe (73) are connected to the fifth pipe (15) through a proportional three-way valve (75).
3. The engine cooling system according to claim 1, characterized in that: The heating module (70) includes a heating core (71), the water inlet of the heating core (71) is connected to the fourth pipe (14), and the water outlet of the heating core (71) is connected to the fifth pipe (15); a throttling structure (18) is provided on the sixth pipe (16).
4. The engine cooling system according to claim 2 or 3, characterized in that: The fourth pipe (14) is equipped with a temperature sensor (19), and the sixth pipe (16) is located at the outlet end of the temperature sensor (19).
5. The engine cooling system according to claim 4, characterized in that: It also includes a booster (80) and an expansion tank (90). The booster (80) has a booster inlet pipe (81) at its inlet end to be connected to the cylinder water jacket (20), and a booster outlet pipe (82) at its outlet end to be connected to the expansion tank (90). The expansion tank (90) has a water supply pipe (91) to be connected to the third pipe (13).
6. The engine cooling system according to claim 5, characterized in that: The cylinder head water jacket (21) is provided with a degassing pipe (17) connected to the booster water outlet pipe (82).
7. The engine cooling system according to any one of claims 1-3, characterized in that: The oil cooler (30) is provided with an oil cooling inlet (31) at the water inlet end, and the oil cooling inlet (31) is directly connected to the cylinder outlet (23).
8. The engine cooling system according to any one of claims 1-3, characterized in that: The EGR cooler (40) has a cooler outlet (41) at its outlet end, and the cooler outlet (41) is directly connected to the water inlet (27).
9. The engine cooling system according to claim 2, characterized in that: A resistance heater (74) is also provided between the second water pump (72) and the warm air core (71).
10. A car, characterized in that, Includes the engine cooling system according to any one of claims 1-9.