Engine cooling system and automobile

Abstract

This utility model belongs to the field of automotive thermal management technology, specifically relating to an engine cooling system and an automobile, including a main water pump, a water-cooling jacket assembly, a thermostat, a radiator, a turbocharger, an oil cooler, an EGR cooler, and a heater module. The water-cooling jacket assembly includes an external water jacket, opposing water jackets, and a cylinder head water jacket, with multiple components connected via the external water jacket. The external water jacket connects the main water pump, oil cooler, turbocharger, and heater module on different sides of the engine, helping to eliminate long pipes between components in different locations, making the cooling system structure simpler and more compact. The main water pump directly drives coolant into the oil cooler to cool the engine oil, ensuring effective oil cooling. The engine cooling system can implement multiple coolant flow paths to meet the cooling needs of different components.

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 main water pump, a water-cooled jacket assembly, a thermostat, a radiator, a turbocharger, an oil cooler, an EGR cooler, and a heater module.

[0006] The water cooling jacket assembly includes an external water jacket, a cylinder block water jacket, and a cylinder head water jacket, with the external water jacket connected to the inlet of the main water pump.

[0007] The main water pump has a first pipe at its outlet connected to the inlet of the cylinder block water jacket, and the cylinder head water jacket has a second pipe connected to the inlet of the thermostat. The thermostat's outlet is connected to the external water jacket via a fourth pipe, and the thermostat's outlet is connected to the inlet of the heater module via a fifth pipe. The heater module's outlet is connected to the external water jacket via a sixth pipe.

[0008] The cylinder block water jacket is connected to the oil cooler and the EGR cooler in sequence through the seventh pipe and then connected to the external water jacket. The cylinder block water jacket is connected to the turbocharger through the eighth pipe and then connected to the external water jacket. A ninth pipe is provided on the fifth pipe and connected to the external water jacket.

[0009] In some embodiments, the heating module includes a heating water pump, a heating core, and a bypass pipe, wherein the heating water pump and the heating core are connected in series, and the heating water pump and the heating core are connected in parallel with the bypass pipe;

[0010] The inlet of the warm air pump and the outlet of the bypass pipe are connected to the fifth pipe. A first proportional three-way valve is provided between the outlet of the warm air core and the inlet of the bypass pipe. The first proportional three-way valve is connected to the external water jacket through the sixth pipe.

[0011] In some embodiments, the fifth pipe is provided with a temperature sensor between the thermostat and the ninth pipe.

[0012] In some embodiments, a first throttling orifice is provided on the ninth pipe.

[0013] In some embodiments, the engine cooling system further includes a battery heat exchange plate, the inlet of which is connected to the inlet of the heater core via a second proportional three-way valve, and the outlet of which is connected to the outlet of the heater core.

[0014] In some embodiments, a heater is further provided between the warm air pump and the warm air core.

[0015] In some embodiments, the engine cooling system further includes an expansion tank, the cylinder head water jacket is connected to the inlet of the expansion tank via a first exhaust fluid supply pipe, the radiator is connected to the inlet of the expansion tank via a second exhaust fluid supply pipe, the outlet of the heater core is connected to the inlet of the expansion tank via a third exhaust fluid supply pipe, and the outlet of the expansion tank is connected to the external water jacket via a fourth exhaust fluid supply pipe.

[0016] In some embodiments, a second throttling orifice is provided on the first exhaust fluid replenishment pipe, a third throttling orifice is provided on the second exhaust fluid replenishment pipe, and a fourth throttling orifice is provided on the third exhaust fluid replenishment pipe.

[0017] In some embodiments, the engine cooling system further includes a control module configured to:

[0018] When preventing engine overheating, the control module controls the engine cooling system to execute a large circulation mode;

[0019] When the engine is warmed up quickly, the control module controls the engine cooling system to execute a small circulation mode;

[0020] The coolant flow path of the engine cooling system includes:

[0021] Coolant flow path 1: Main water pump → Cylinder block water jacket → Cylinder head water jacket → Temperature controller → Radiator → External water jacket → Main water pump;

[0022] Coolant flow path two: main water pump → cylinder block water jacket → cylinder head water jacket → expansion tank → external water jacket → main water pump;

[0023] Coolant flow path three: main water pump → cylinder block water jacket → cylinder head water jacket → thermostat → external water jacket → main water pump;

[0024] Coolant flow path four: main water pump → cylinder block water jacket → oil cooler → EGR cooler → external water jacket → main water pump;

[0025] Coolant flow path five: main water pump → cylinder block water jacket → turbocharger → external water jacket → main water pump;

[0026] Coolant flow path five: main water pump → cylinder block water jacket → cylinder head water jacket → thermostat → heater module → external water jacket → main water pump;

[0027] The large circulation mode is formed by the combination of coolant flow path one to coolant flow path six; the small circulation mode is formed by the combination of coolant flow path two to coolant flow path six.

[0028] The second aspect provides a car that includes the aforementioned engine cooling system.

[0029] By employing the technical solution of this utility model, the external water jacket can connect the main water pump, oil cooler, turbocharger, and heater module on different sides of the engine, helping to eliminate long pipelines between components in different locations and making the cooling system structure simpler and more compact. The main water pump can directly drive coolant into the oil cooler to cool the engine oil, ensuring effective oil cooling. The engine cooling system can achieve multiple coolant flow paths to meet the cooling needs of different components. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the engine cooling system in this embodiment;

[0031] Figure 2 This is a schematic diagram of the coolant flow path one of the engine cooling system in this embodiment;

[0032] Figure 3 This is a schematic diagram of the second coolant flow path in the engine cooling system of this embodiment;

[0033] Figure 4 This is a schematic diagram of the coolant flow path three of the engine cooling system in this embodiment;

[0034] Figure 5 This is a schematic diagram of the coolant flow path four of the engine cooling system in this embodiment;

[0035] Figure 6 This is a schematic diagram of the coolant flow path five of the engine cooling system in this embodiment;

[0036] Figure 7 This is a schematic diagram of the coolant flow path six of the engine cooling system in this embodiment;

[0037] Figure 8 This is a schematic diagram of the large circulation structure of the engine cooling system in this embodiment;

[0038] Figure 9 This is a schematic diagram of the small circulation structure of the engine cooling system in this embodiment.

[0039] In the diagram: Main water pump 10; First pipe 11; Second pipe 12; Third pipe 13; Fourth pipe 14; Fifth pipe 15; Sixth pipe 16; Seventh pipe 17; Eighth pipe 18; Ninth pipe 19; Cylinder block water jacket 20; Cylinder head water jacket 21; External water jacket 22; Thermostat 30; Temperature sensor 31; Radiator 40; Turbocharger 50; Oil cooler 60; EGR cooler 61; Heater module 70; Heater water pump 71; Heater core 72; Heater 73; Bypass pipe 74; Expansion tank 80; First exhaust fluid replenishment pipe 81; Second exhaust fluid replenishment pipe 82; Third exhaust fluid replenishment pipe 83; First proportional three-way valve 84; Second proportional three-way valve 85; First throttle orifice 86; Second throttle orifice 87; Third throttle orifice 88; Fourth throttle orifice 89; Battery heat exchange plate 90. Detailed Implementation

[0040] 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.

[0041] 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.

[0042] 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.

[0043] like Figure 1 As shown, this embodiment provides an engine cooling system for automobiles. The engine cooling system includes a main water pump 10, a water-cooled jacket assembly, a thermostat 30, a radiator 40, a turbocharger 50, an oil cooler 60, an EGR cooler 61 (Exhaust Gas Recirculation Cooler), a heater module 70, and an expansion tank 80.

[0044] 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 integrated outside the cylinder block. The outlet end of the cylinder block water jacket 20 is connected to the inlet end of the cylinder head water jacket 21. The external water jacket 22 can be extended to different sides of the cylinder block as needed, and the external water jacket 22 is connected to the inlet side of the main water pump 10.

[0045] In this embodiment, the outlet of the main water pump 10 is connected to the inlet of the cylinder block water jacket 20 via a first pipe 11, and the outlet of the cylinder head water jacket 21 is connected to the inlet of the thermostat 30 via a second pipe 12. The outlet of the thermostat 30 is connected to the external water jacket 22 via a fourth pipe 14, and to the inlet of the heater module 70 via a fifth pipe 15. The outlet of the heater module 70 is connected to the external water jacket 22 via a sixth pipe 16. The cylinder block water jacket 20 is connected to the external water jacket 22 via a seventh pipe 17, sequentially connecting to the oil cooler 60 and the EGR cooler 61. The cylinder block water jacket 20 is also connected to the external water jacket 22 via an eighth pipe 18, connecting to the turbocharger 50. A ninth pipe 19 is provided on the fifth pipe 15 and connected to the external water jacket 22. The inlet end of the ninth pipe 19 is connected to the fifth pipe 15, and the outlet end of the ninth pipe 19 is connected to the external water jacket 22. A first throttling orifice 86 is provided on the ninth pipe 19.

[0046] In this embodiment, the main water pump 10 is preferably an electric water pump. This electric water pump can be selectively connected to the engine crankshaft, allowing it to adjust its duty cycle according to the engine's operating conditions, thereby controlling the optimal outlet water temperature of the engine cooling system. In this embodiment, a temperature sensor 31 is installed between the thermostat 30 and the ninth pipe 19 in the fifth pipe 15 to detect the temperature of the coolant flowing through the fifth pipe 15, facilitating proper thermal management. The thermostat 30 is preferably a dual-valve thermostat 30, which offers significant advantages in terms of flow regulation, cost control, installation space, automatic temperature control, and system stability.

[0047] The heating module 70 in this embodiment specifically includes a heating water pump 71, a heating core 72, and a bypass pipe 74. The heating water pump 71 and the heating core 72 are connected in series, and the heating water pump 71 and the heating core 72 are connected in parallel with the bypass pipe 74. The inlet end of the heating water pump 71 and the outlet end of the bypass pipe 74 are connected to a fifth pipe 15. A first proportional three-way valve 84 is installed between the outlet end of the heating core 72 and the inlet end of the bypass pipe 74. This first proportional three-way valve 84 is connected to an external water jacket 22 through a sixth pipe 16. The coolant entering the heating module 70 is regulated by the proportional three-way valve to adjust the proportion of flow through the heating water pump 71 and the heating core 72 to meet different needs for cooling and heating conditions. In this embodiment, a heater 73 is also installed between the heating water pump 71 and the heating core 72, which can meet the electric heating needs of the passenger compartment.

[0048] The engine cooling system in this embodiment also includes a battery heat exchange plate 90. The inlet of the battery heat exchange plate 90 is connected to the inlet of the heater core 72 via a second proportional three-way valve 85, and the outlet of the battery heat exchange plate 90 is connected to the outlet of the heater core 72. The second proportional three-way valve 85 can control the liquid ratio of coolant flowing through the heater core 72 and the battery heat exchange plate 90, so that coolant can enter the battery heat exchange plate 90 as needed to utilize the engine's waste heat to heat the battery pack. This waste heat recovery path utilizes the piping of the heater module 70, eliminating the need for direct waste heat intake and return pipes on the engine, which helps reduce the space required for pipe layout, saves on the number of pipes, and reduces costs.

[0049] In this embodiment, the cylinder head water jacket 21 is connected to the inlet of the expansion tank 80 via a first venting and replenishment pipe 81, and a second throttling orifice 87 is provided on the first venting and replenishment pipe 81. The radiator 40 is connected to the inlet of the expansion tank 80 via a second venting and replenishment pipe 82, and a third throttling orifice 88 is provided on the second venting and replenishment pipe 82. The outlet of the heater core 72 is connected to the inlet of the expansion tank 80 via a third venting and replenishment pipe 83, and a fourth throttling orifice 89 is provided on the third venting and replenishment pipe 83. The outlet of the expansion tank 80 is connected to the external water jacket 22 via the fourth venting and replenishment pipe. This embodiment, by providing throttling orifices on different pipes, can effectively regulate the flow and pressure of the coolant, reduce coolant impact and pressure fluctuations, and ensure stable coolant flow.

[0050] The engine cooling system in this embodiment can achieve multiple coolant flow paths.

[0051] See details Figure 2 The first coolant flow path is as follows: the main water pump 10 drives the coolant to first flow into the cylinder block water jacket 20 through the first pipe 11, then into the cylinder head water jacket 21, then into the thermostat 30 through the second pipe 12, then into the radiator 40 through the third pipe 13, then into the external water jacket 22 through the fourth pipe 14, and finally back to the main water pump 10. In other words, the first coolant flow path is: main water pump 10 → cylinder block water jacket 20 → cylinder head water jacket 21 → thermostat 30 → radiator 40 → external water jacket 22 → main water pump 10.

[0052] See details Figure 3 The second coolant flow path is as follows: the main water pump 10 drives the coolant to first flow into the cylinder block water jacket 20 through the first pipe 11, then into the cylinder head water jacket 21, then into the expansion tank 80 through the first exhaust water supply pipe 81, then into the external water jacket 22 through the fourth exhaust water supply pipe, and finally back to the main water pump 10. In other words, the second coolant flow path is: main water pump 10 → cylinder block water jacket 20 → cylinder head water jacket 21 → expansion tank 80 → external water jacket 22 → main water pump 10.

[0053] See details Figure 4 In the third coolant flow path, the main water pump 10 drives the coolant to first flow into the cylinder block water jacket 20 through the first pipe 11, then into the cylinder head water jacket 21, then into the thermostat 30 through the second pipe 12, then into the external water jacket 22 through the fifth pipe 15 and the ninth pipe 19, and finally back to the main water pump 10. In other words, the third coolant flow path is: main water pump 10 → cylinder block water jacket 20 → cylinder head water jacket 21 → thermostat 30 → external water jacket 22 → main water pump 10.

[0054] See details Figure 5 The fourth coolant flow path is as follows: the main water pump 10 drives the coolant to first flow into the cylinder block water jacket 20 through the first pipe 11, then through the seventh pipe 17 into the oil cooler 60 and the EGR cooler 61, then into the external water jacket 22, and finally back to the main water pump 10. In other words, the fourth coolant flow path is: main water pump 10 → cylinder block water jacket 20 → oil cooler 60 → EGR cooler 61 → external water jacket 22 → main water pump 10.

[0055] See details Figure 6 The fifth coolant flow path is as follows: the main water pump 10 drives the coolant to first flow into the cylinder block water jacket 20 through the first pipe 11, then into the turbocharger 50 through the eighth pipe 18, then into the external water jacket 22, and finally back to the main water pump 10. In other words, the fifth coolant flow path is: main water pump 10 → cylinder block water jacket 20 → turbocharger 50 → external water jacket 22 → main water pump 10.

[0056] See details Figure 7 The coolant flow path six is ​​as follows: the main water pump 10 drives the coolant to first flow into the cylinder block water jacket 20 through the first pipe 11, then into the cylinder head water jacket 21, then into the thermostat 30 through the second pipe 12, then into the heater module 70 through the fifth pipe 15, then into the external water jacket 22 through the sixth pipe 16, and finally back to the main water pump 10. In other words, the coolant flow path six is: main water pump 10 → cylinder block water jacket 20 → cylinder head water jacket 21 → thermostat 30 → heater module 70 → external water jacket 22 → main water pump 10.

[0057] The engine cooling system in this embodiment also includes a control module, which is configured to: when preventing engine overheating, control the engine cooling system to execute a large circulation mode to keep the engine at 85℃-100℃; when the engine is warming up quickly, control the engine cooling system to execute a small circulation mode to rapidly increase engine temperature.

[0058] See details Figure 8 The large circulation pattern is formed by combinations of coolant flow paths one through six. See details. Figure 9 The small circulation pattern is formed by the combination of coolant flow path two to coolant flow path six.

[0059] It should be noted that the control module in this embodiment is existing technology. The control module can be integrated into the ECU (engine control unit) or set independently, so it will not be described in detail in this embodiment.

[0060] In the engine cooling system of this embodiment, the external water jacket 22 connects the main water pump 10, oil cooler 60, turbocharger 50, and heater module 70 on different sides of the engine, helping to eliminate long pipes between components in different locations and making the cooling system structure simpler and more compact. The main water pump 10 directly drives coolant into the oil cooler 60 to cool the engine oil, ensuring effective oil cooling. The engine cooling system can implement multiple coolant flow paths to meet the cooling needs of different components. The battery heat exchange plate 90 is connected to the heater module 70, allowing the heater module 70 to utilize the engine's waste heat to heat the battery pack. This eliminates the need for direct waste heat intake and return pipes on the engine, helping to reduce pipe layout space, save on the number of pipes, and lower costs.

[0061] 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.

[0062] 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 main water pump (10), a water-cooled jacket assembly, a thermostat (30), a radiator (40), a turbocharger (50), an oil cooler (60), an EGR cooler (61), and a heater module (70); The water cooling jacket assembly includes an external water jacket (22), a cylinder block water jacket (20), and a cylinder head water jacket (21). The external water jacket (22) is connected to the inlet end of the main water pump (10). The main water pump (10) has a first pipe (11) at its outlet end connected to the inlet end of the cylinder water jacket (20), and the cylinder head water jacket (21) has its outlet end connected to the inlet end of the thermostat (30) via a second pipe (12). The thermostat (30) has its outlet end connected to the external water jacket (22) via a fourth pipe (14) on one side, and the thermostat (30) has its outlet end connected to the inlet end of the heater module (70) via a fifth pipe (15) on the other side. The heater module (70) has its outlet end connected to the external water jacket (22) via a sixth pipe (16). The cylinder water jacket (20) is connected to the oil cooler (60) and the EGR cooler (61) in sequence through the seventh pipe (17) and then connected to the external water jacket (22). The cylinder water jacket (20) is connected to the turbocharger (50) through the eighth pipe (18) and then connected to the external water jacket (22). A ninth pipe (19) is provided on the fifth pipe (15) and connected to the external water jacket (22).

2. The engine cooling system according to claim 1, characterized in that: The heating module (70) includes a heating water pump (71), a heating core (72), and a bypass pipe (74), wherein the heating water pump (71) and the heating core (72) are connected in series, and the heating water pump (71) and the heating core (72) are connected in parallel with the bypass pipe (74); The inlet end of the warm air pump (71) and the outlet end of the bypass pipe (74) are connected to the fifth pipe (15). A first proportional three-way valve (84) is provided between the outlet end of the warm air core (72) and the inlet end of the bypass pipe (74). The first proportional three-way valve (84) is connected to the external water jacket (22) through the sixth pipe (16).

3. The engine cooling system according to claim 1 or 2, characterized in that: The fifth pipe (15) is provided with a temperature sensor (31) between the thermostat (30) and the ninth pipe (19).

4. The engine cooling system according to claim 1 or 2, characterized in that: The ninth pipe (19) is provided with a first throttling orifice (86).

5. The engine cooling system according to claim 2, characterized in that: The engine cooling system also includes a battery heat exchange plate (90), the water inlet of which is connected to the water inlet of the heater core (72) via a second proportional three-way valve (85), and the water outlet of which is connected to the water outlet of the heater core (72).

6. The engine cooling system according to claim 2 or 5, characterized in that: A heater (73) is also provided between the warm air pump (71) and the warm air core (72).

7. The engine cooling system according to claim 5, characterized in that: The engine cooling system also includes an expansion tank (80), the cylinder head water jacket (21) is connected to the inlet of the expansion tank (80) through a first exhaust fluid supply pipe (81), the radiator (40) is connected to the inlet of the expansion tank (80) through a second exhaust fluid supply pipe (82), the outlet of the heater core (72) is connected to the inlet of the expansion tank (80) through a third exhaust fluid supply pipe (83), and the outlet of the expansion tank (80) is connected to the external water jacket (22) through a fourth exhaust fluid supply pipe.

8. The engine cooling system according to claim 7, characterized in that: The first exhaust fluid replenishment pipe (81) is provided with a second throttling hole (87), the second exhaust fluid replenishment pipe (82) is provided with a third throttling hole (88), and the third exhaust fluid replenishment pipe (83) is provided with a fourth throttling hole (89).

9. The engine cooling system according to claim 7, characterized in that: The engine cooling system also includes a control module, which is configured to: When preventing engine overheating, the control module controls the engine cooling system to execute a large circulation mode; When the engine is warmed up quickly, the control module controls the engine cooling system to execute a small circulation mode; The coolant flow path of the engine cooling system includes: Coolant flow path 1: main water pump (10) → cylinder block water jacket (20) → cylinder head water jacket (21) → thermostat (30) → radiator (40) → external water jacket (22) → main water pump (10); Coolant flow path two: main water pump (10) → cylinder block water jacket (20) → cylinder head water jacket (21) → expansion tank (80) → external water jacket (22) → main water pump (10); Coolant flow path three: main water pump (10) → cylinder block water jacket (20) → cylinder head water jacket (21) → thermostat (30) → external water jacket (22) → main water pump (10); Coolant flow path four: main water pump (10) → cylinder block water jacket (20) → oil cooler (60) → EGR cooler (61) → external water jacket (22) → main water pump (10); Coolant flow path five: main water pump (10) → cylinder block water jacket (20) → turbocharger (50) → external water jacket (22) → main water pump (10); Coolant flow path six: main water pump (10) → cylinder block water jacket (20) → cylinder head water jacket (21) → thermostat (30) → heater module (70) → external water jacket (22) → main water pump (10); The large circulation pattern is formed by the combination of coolant flow paths one to six; the small circulation pattern is formed by the combination of coolant flow paths two to six.

10. A car, characterized in that, Includes the engine cooling system as described in any one of claims 1-9.

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