Engine and vehicle

Abstract

An engine and a vehicle. The engine (1000) comprises a cylinder block (10), a cylinder-block water jacket (11), a cylinder head (20), a first cylinder-head water jacket (21), and a second cylinder-head water jacket (22), wherein the cylinder-block water jacket (11) is arranged on the cylinder block (10); the cylinder head (20) is arranged on the cylinder block (10); the first cylinder-head water jacket (21) and the second cylinder-head water jacket (22) are arranged on the cylinder head (20); the first cylinder-head water jacket (21) is arranged on the side of the second cylinder-head water jacket (22) that is away from the cylinder block (10), and the first cylinder-head water jacket (21) is connected in parallel with the second cylinder-head water jacket (22); and the cylinder block (10) and the cylinder head (20) are provided with communication water paths, which are in communication with the first cylinder-head water jacket (21) and the cylinder-block water jacket (11).

Description

Engine and vehicle

[0001] This application claims priority to Chinese Patent Application No. 202420788239.9, filed on April 16, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of vehicles, and in particular to an engine and a vehicle. BACKGROUND

[0003] At present, the engine in the vehicle converts internal energy into mechanical energy. A large amount of heat is generated in the conversion process, which is transferred to the atmosphere, thereby stabilizing the temperature of the parts around the combustion chamber of the engine, and further ensuring the normal operation of the engine, thus the engine needs to be cooled. SUMMARY

[0004] The present disclosure aims to at least solve one of the technical problems existing in the related art. To this end, the present disclosure proposes an engine that can improve cooling efficiency and save energy consumption.

[0005] The present disclosure also proposes a vehicle.

[0006] The engine according to some embodiments of the present disclosure comprises a cylinder body, a cylinder body water jacket, a cylinder head, a first cylinder head water jacket, and a second cylinder head water jacket. The cylinder body water jacket is arranged on the cylinder body, and the cylinder head is arranged on the cylinder body. The first cylinder head water jacket and the second cylinder head water jacket are arranged on the cylinder head. The first cylinder head water jacket is arranged on the side of the second cylinder head water jacket away from the cylinder body, and the first cylinder head water jacket is connected in parallel with the second cylinder head water jacket. At least one of the cylinder body or the cylinder head is configured with a communication water path, which respectively communicates with the first cylinder head water jacket and the cylinder body water jacket.

[0007] The engine according to some embodiments of the present disclosure, by arranging the cylinder body water jacket on the cylinder body, and arranging the first cylinder head water jacket and the second cylinder head water jacket on the cylinder head, can transfer the heat in the combustion chamber and the cylinder body to the cooling liquid through heat conduction. The first cylinder head water jacket is connected with the cylinder body water jacket through the communication water path, and the first cylinder head water jacket is connected in parallel with the second cylinder head water jacket, thereby improving the heat dissipation efficiency of the engine and saving energy consumption.

[0008] In some embodiments, the first cylinder head water jacket has a water inlet and a water outlet. One end of the communication water passage is in communication with the first cylinder head water jacket, and is located between the water inlet and the water outlet in the flow path of the first cylinder head water jacket. The distance between the one end of the communication water passage and the water inlet is less than the distance between the one end of the communication water passage and the water outlet in the flow path of the first cylinder head water jacket.

[0009] In some embodiments, the engine further comprises a water receiving seat. The water receiving seat is disposed on the cylinder head, and the water receiving seat comprises an engine water inlet, a cylinder head water outlet, and a cylinder block water outlet. The engine water inlet is connected to the first cylinder head water jacket and the second cylinder head water jacket, respectively. The cylinder head water outlet is connected to the first cylinder head water jacket and the second cylinder head water jacket, respectively, and the cylinder block water outlet is connected to the cylinder block water jacket.

[0010] In some embodiments, the water receiving seat comprises a connecting water channel connected between the cylinder head water outlet and the cylinder block water outlet.

[0011] In some embodiments, the engine further comprises a first temperature regulator. The first temperature regulator is disposed at a water outlet position of the cylinder block water jacket, and the first temperature regulator is configured to adjust the water outlet flow of the cylinder block water jacket according to temperature.

[0012] In some embodiments, the engine further comprises a water receiving seat. The water receiving seat is disposed on the cylinder head, and the water receiving seat comprises a cylinder block water outlet. The cylinder block water outlet is connected to a water outlet position of the cylinder block water jacket, and the first temperature regulator is disposed at the cylinder block water outlet.

[0013] In some embodiments, the engine further comprises a second temperature regulator. The water receiving seat further comprises an engine water outlet and a cylinder head water outlet, and the engine water outlet is in communication with the cylinder head water outlet. The cylinder head water outlet is connected to the first cylinder head water jacket and the second cylinder head water jacket, respectively, and the second temperature regulator is connected to the engine water outlet.

[0014] In some embodiments, the engine further comprises a connecting pipe. The engine water outlet and the second temperature regulator are connected through the connecting pipe.

[0015] In some embodiments, the second temperature regulator has a first outlet configured to be connected to a radiator.

[0016] In some embodiments, the engine further comprises an oil cooler. An oil passage is formed in the cylinder block, and the second temperature regulator has a second outlet. The oil cooler is disposed on the cylinder block and connected to the oil passage, and the oil cooler is connected to the second outlet.

[0017] In some embodiments, the engine further comprises a pump body. The water jacket includes an engine water inlet connected with the first cylinder head water jacket and the second cylinder head water jacket respectively, a first end of the pump body is connected with the oil cooler, and a second end of the pump body is connected with the engine water inlet.

[0018] In some embodiments, the first thermostat is one of a mechanical thermostat and an electronic thermostat, and the second thermostat is an electronic thermostat.

[0019] In some embodiments, the engine further comprises an Exhaust Gas Re-circulation (EGR) cooler connected with an outflow position of the cylinder block water jacket.

[0020] In some embodiments, the engine further comprises a water jacket. The water jacket is arranged on the cylinder head, and the water jacket includes a cylinder block water outlet. The EGR cooler is connected with the cylinder block water outlet.

[0021] In some embodiments, the EGR cooler has a third outlet configured to be connected with a heater core.

[0022] In some embodiments, the engine further comprises a first temperature sensor and a second temperature sensor. The first temperature sensor is arranged on the cylinder head water outlet and configured to detect a temperature at the cylinder head water outlet. The second temperature sensor is arranged on the cylinder block and configured to detect a temperature at the cylinder block water jacket.

[0023] A vehicle according to some embodiments of the present disclosure comprises the above engine.

[0024] Additional aspects and advantages of the present disclosure will be made apparent from the following description, which is given merely for purposes of illustration, from the accompanying drawings and from the practice of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and / or additional aspects and advantages of the present disclosure will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0026] FIG. 1 is a first circulation schematic diagram of an engine cooling system according to some embodiments of the present disclosure;

[0027] FIG. 2 is a second circulation schematic diagram of an engine cooling system according to some embodiments of the present disclosure;

[0028] FIG. 3 is a third circulation schematic diagram of an engine cooling system according to some embodiments of the present disclosure;

[0029] FIG. 4 is a partial cross-sectional view of an engine at a first angle according to some embodiments of the present disclosure;

[0030] FIG. 5 is a partial structural diagram of an engine according to some embodiments of the present disclosure;

[0031] FIG. 6 is a partial cross-sectional view of an engine at a second angle according to some embodiments of the present disclosure;

[0032] FIG. 7 is a block diagram of a vehicle according to some embodiments of the present disclosure.

[0033] Reference signs: 1000, engine; 10, cylinder block; 11, cylinder block water jacket; 20, cylinder head; 21, first cylinder head water jacket; 22, second cylinder head water jacket; 30, water receiving seat; 31, engine water inlet; 32, cylinder head water outlet; 33, cylinder block water outlet; 34, EGR cooler joint; 40, first thermostat; 50, second thermostat; 51, first outlet; 52, second outlet; 60, connecting pipe; 70, oil cooler; 80, pump body; 90, EGR cooler; 91, heater core; 100, first temperature sensor; 110, second temperature sensor; 120, radiator; 2000, vehicle. DETAILED DESCRIPTION

[0034] Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. The embodiments described with reference to the accompanying drawings are exemplary and should not be construed as limiting the present disclosure.

[0035] In the related art, an engine adopts a split cooling system, that is, the cylinder block water jacket and the cylinder head water jacket are cooled respectively, and then a thermostat is used to control the flow path of the cooling water, so that the heat loss of the engine during cooling can be reduced, and thus the fuel economy of the engine can be improved. However, such a cooling system is arranged relatively scattered, and multiple water pipes need to be designed to connect the water circuit, which in turn leads to an increase in the cost of the engine.

[0036] To this end, some embodiments of the present disclosure provide an engine.

[0037] An engine according to some embodiments of the present disclosure is described below with reference to FIGS. 1 to 6, which is applied to a vehicle.

[0038] As shown in FIGS. 1-6, the engine 1000 comprises a cylinder block 10, a cylinder head 20, a cylinder block water jacket 11, a first cylinder head water jacket 21 and a second cylinder head water jacket 22. The cylinder block water jacket 11 is arranged on the cylinder block 10, and the cylinder head 20 is arranged on the cylinder block 10. The first cylinder head water jacket 21 and the second cylinder head water jacket 22 are arranged on the cylinder head 20. The first cylinder head water jacket 21 is arranged on a side of the second cylinder head water jacket 22 away from the cylinder block 10, and the first cylinder head water jacket 21 is connected in parallel with the second cylinder head water jacket 22. The cylinder block 10 and the cylinder head 20 are configured with a communication water passage that respectively communicates with the first cylinder head water jacket 21 and the cylinder block water jacket 11.

[0039] It can be understood that the cylinder block 10 and the cylinder head 20 constitute the main structure of the engine, and the cylinder head 20 is located above the cylinder block 10, so that the cylinder head 20 can seal the top of the cylinder block 10. The cylinder block water jacket 11 is arranged on the cylinder block 10, and the first cylinder head water jacket 21 and the second cylinder head water jacket 22 are arranged on the cylinder head 20. The cylinder block water jacket 11 is a cooling channel in the cylinder block 10 of the engine or a component provided with a cooling channel, and the first cylinder head water jacket 21 and the second cylinder head water jacket 22 are cooling channels in the cylinder head 20 of the engine or components provided with cooling channels, so that the heat of the cylinder block 10 can be transferred to the cooling liquid through the cylinder block water jacket 11, and the heat of the cylinder head 20 can be transferred to the cooling liquid through the first cylinder head water jacket 21 and the second cylinder head water jacket 22, thereby achieving the heat dissipation effect of the cylinder block 10 and the cylinder head 20.

[0040] Furthermore, the communication water passage is arranged between the cylinder block 10 and the cylinder head 20, so that the cooling liquid can flow through the communication water passage to cool the cylinder block 10 and the cylinder head 20. The first cylinder head water jacket 21 and the second cylinder head water jacket 22 are connected in parallel and spaced apart from each other, the first cylinder head water jacket 21 is connected with the communication water passage, and the communication water passage is connected with the cylinder block water jacket 11. In this way, the first cylinder head water jacket 21 and the cylinder block water jacket 11 are directly connected through the communication water passage, so that the layout of the engine can be more compact, the heat dissipation efficiency of the engine can be improved, and the energy consumption of the engine can be saved.

[0041] Therefore, by arranging the cylinder block water jacket 11 on the cylinder block 10 and arranging the first cylinder head water jacket 21 and the second cylinder head water jacket 22 on the cylinder head 20, the heat in the combustion chamber and the cylinder block 10 can be transferred to the cooling liquid through heat conduction. The first cylinder head water jacket 21 and the cylinder block water jacket 11 are connected through the communication water passage, and the first cylinder head water jacket 21 and the second cylinder head water jacket 22 are connected in parallel. In this way, the pipeline connection between the cylinder block water jacket 11 and the first cylinder head water jacket 21 can be saved, the flow route of the cooling liquid can be optimized, the heat dissipation efficiency of the engine can be improved, and the energy consumption can be saved.

[0042] In some embodiments, as shown in FIGS. 1-3, the first cylinder head water jacket 21 has an inlet and an outlet. One end of the communication water passage is in communication with the first cylinder head water jacket 21 and is located between the inlet and the outlet on the flow path of the first cylinder head water jacket 21. The distance between the one end of the communication water passage and the inlet is less than the distance between the one end of the communication water passage and the outlet on the flow path of the first cylinder head water jacket 21.

[0043] That is, the inlet and the outlet are respectively arranged at the two ends of the first cylinder head water jacket 21, so that the cooling liquid can enter the first cylinder head water jacket 21 through the inlet and then flow out of the outlet. The one end of the communication water passage is connected to the first cylinder head water jacket 21, and the one end of the communication water passage is arranged on the main body of the first cylinder head water jacket 21, so that the communication water passage can avoid the inlet and the outlet, thereby avoiding affecting the water inlet and the water outlet in the first cylinder head water jacket 21. Moreover, the connection section of the communication water passage is arranged close to the inlet, so that the cooling liquid can be divided into two flow paths after entering the communication water passage through the inlet. The cooling liquid in one flow path flows to the communication water passage, and the cooling liquid in the other flow path continues to flow in the first cylinder head water jacket 21, so that the cooling liquid can cool the cylinder head 20 and the cylinder block 10 respectively, thereby improving the heat dissipation efficiency of the engine.

[0044] In some embodiments, as shown in FIGS. 4 and 5, the engine further comprises a water receiving seat 30. The water receiving seat 30 is arranged on the cylinder head 20, and the water receiving seat 30 comprises an engine inlet 31, a cylinder head outlet 32 and a cylinder block outlet 33. The engine inlet 31 is connected to the first cylinder head water jacket 21 and the second cylinder head water jacket 22, the cylinder head outlet 32 is connected to the first cylinder head water jacket 21 and the second cylinder head water jacket 22, and the cylinder block outlet 33 is connected to the cylinder block water jacket 11.

[0045] It can be understood that the water receiving seat 30 is arranged on the cylinder head 20, and the water receiving seat 30 comprises the engine inlet 31, the cylinder head outlet 32 and the cylinder block outlet 33, so that the cooling liquid can flow into the engine through the engine inlet 31 and then flow out of the cylinder head outlet 32 and the cylinder block outlet 33. Moreover, the engine inlet 31 is connected to the first cylinder head water jacket 21 and the second cylinder head water jacket 22, so that the cooling liquid can flow into the first cylinder head water jacket 21 and the second cylinder head water jacket 22 through the engine inlet 31. The cylinder head outlet 32 is connected to the first cylinder head water jacket 21 and the second cylinder head water jacket 22, so that the cooling liquid can flow out after flowing through the first cylinder head water jacket 21 and the second cylinder head water jacket 22. The cylinder block outlet 33 is connected to the cylinder block water jacket 11, so that the cooling liquid can flow through the cylinder block 10 to cool the cylinder block 10, thereby improving the heat dissipation efficiency of the engine. Moreover, the arrangement of the water receiving seat 30 can improve the integration of the engine and further reduce the required connecting pipelines.

[0046] In some embodiments, as shown in FIG. 4, the water jacket 30 comprises a connecting water channel. The connecting water channel is connected between the cylinder head water outlet 32 and the cylinder body water outlet 33. That is, by providing the connecting water channel, the cooling liquid can flow in the cylinder head 20 and the cylinder body 10, and thus the heat dissipation efficiency of the engine can be improved.

[0047] In some embodiments, as shown in FIG. 4 and FIG. 5, the engine further comprises a first thermostat 40 and a second thermostat 50. The first thermostat 40 is arranged at the water outlet position of the cylinder body water jacket 11, and is used to adjust the water outlet flow of the cylinder body water jacket 11 according to the temperature. The water jacket 30 is arranged on the cylinder head 20, and comprises the cylinder body water outlet 33 connected with the water outlet position of the cylinder body water jacket 11, and the first thermostat 40 is arranged at the cylinder body water outlet 33. The water jacket 30 further comprises an engine water outlet and a cylinder head water outlet 32, the engine water outlet is in communication with the cylinder head water outlet 32, and the cylinder head water outlet 32 is connected with the first cylinder head water jacket 21 and the second cylinder head water jacket 22 respectively. The second thermostat 50 is connected with the engine water outlet.

[0048] It can be understood that the first thermostat 40 is arranged at the water outlet position of the cylinder body water jacket 11, so that the first thermostat 40 can accurately adjust the water outlet flow of the cylinder body water jacket 11. And the water jacket 30 is arranged on the cylinder head 20, and comprises the cylinder body water outlet 33 connected with the water outlet position of the cylinder body water jacket 11, so that the water jacket 30 can be connected with the cylinder body water jacket 11, the engine water outlet is in communication with the cylinder head water outlet 32, and the cylinder head water outlet 32 is connected with the first cylinder head water jacket 21 and the second cylinder head water jacket 22 respectively, so that the water jacket 30 can be connected with the first cylinder head water jacket 21 and the second cylinder head water jacket 22. The second thermostat 50 is arranged at the engine water outlet, so that the second thermostat 50 can accurately adjust the temperature of the cooling liquid entering the cylinder body 10. In this way, the first thermostat 40 and the second thermostat 50 form a split thermostat structure, so that the heat dissipation capacity of the cooling system of the engine can be adjusted, and thus the engine can work in a suitable temperature range and the working efficiency of the engine can be improved.

[0049] In some embodiments, as shown in FIG. 5, the engine further comprises a connecting pipe 60. The engine water outlet and the second thermostat 50 are connected through the connecting pipe 60. That is, the connecting pipe 60 is located between the engine water outlet and the second thermostat 50, so that the engine water outlet and the second thermostat 50 are in communication, and thus the second thermostat 50 can more accurately adjust the temperature of the cooling liquid entering the engine.

[0050] In some embodiments, as shown in FIG. 4 and FIG. 6, the second temperature regulator 50 has a first outlet 51 configured to be connected with the radiator 120 (as shown in FIG. 1-3), so that the cooling liquid can flow into the radiator 120 after being temperature-regulated by the second temperature regulator 50, thereby improving the heat dissipation efficiency of the engine.

[0051] In some embodiments, as shown in FIG. 1-3 and FIG. 6, the engine further comprises an oil cooler 70. The cylinder block 10 is formed with an oil passage, and the second temperature regulator 50 has a second outlet 52. The oil cooler 70 is arranged on the cylinder block 10 and connected with the oil passage, and the oil cooler 70 is connected with the second outlet 52.

[0052] It can be understood that the second outlet 52 is connected with the oil cooler 70, so that the cooling liquid can flow into the oil cooler 70 after being temperature-regulated by the second temperature regulator 50. The oil cooler 70 is arranged on the cylinder block 10, so that the second temperature regulator 50 can be arranged adjacent to the oil cooler 70, thereby making the structural arrangement of the engine more compact. The oil cooler 70 is in communication with the oil passage, so that the oil cooler 70 can cool the liquid in the oil passage, thereby improving the heat dissipation efficiency of the engine.

[0053] In some embodiments, as shown in FIG. 1-3, the engine further comprises a pump body 80. The water jacket 30 comprises an engine water inlet 31. The engine water inlet 31 is connected with the first cylinder head water jacket 21 and the second cylinder head water jacket 22, respectively. A first end of the pump body 80 is connected with the oil cooler 70, and a second end of the pump body 80 is connected with the engine water inlet 31, so that the pump body 80 can suck the cooling liquid from the engine water inlet 31, and the cooling liquid enters the oil cooler 70 after being cooled by the first cylinder head water jacket 21 and the second cylinder head water jacket 22, thereby improving the heat dissipation efficiency of the engine.

[0054] In some embodiments, as shown in FIG. 4 and FIG. 5, the first temperature regulator 40 is one of a mechanical temperature regulator and an electronic temperature regulator, and the second temperature regulator 50 is an electronic temperature regulator. The mechanical temperature regulator has no electronic components, so that it is convenient to maintain under the premise of ensuring the reliability of the cylinder head 20. The electronic temperature regulator has high precision and strong adaptability, so that the electronic temperature regulator can control the temperature in the cylinder block 10 more accurately.

[0055] In some embodiments, as shown in FIGS. 1-4, the engine further comprises an Exhaust Gas Re-circulation (EGR) cooler 90. The EGR cooler 90 is connected to the water outlet of the cylinder block water jacket 11. The water jacket 30 is provided on the cylinder head 20, and the water jacket 30 comprises a cylinder block water outlet 33, the EGR cooler 90 is connected to the cylinder block water outlet 33, and the cylinder block water outlet 33 is provided with an EGR cooler joint 34, so as to facilitate the connection of the EGR cooler 90 and the cylinder block water outlet 33. The EGR cooler 90 is located on the cylinder block 10, so that the EGR cooler 90 can cool the cylinder block 10, and the EGR cooler 90 is connected to the cylinder block water outlet 33, so that the heat dissipation efficiency of the engine can be improved through the EGR cooler 90.

[0056] In some embodiments, as shown in FIGS. 1-4, the EGR cooler 90 has a third outlet configured to be connected to a heater core 91. In this way, the heat of the exhaust gas can be transferred to the heater core 91, so that the warming-up working condition of the engine can be realized, and the front and rear heating of the vehicle can also be realized, the heat of the heater core 91 can be transferred to the vehicle interior, thereby improving the fuel economy.

[0057] In some embodiments, as shown in FIG. 5, the engine further comprises a first temperature sensor 100 and a second temperature sensor 110. The first temperature sensor 100 is arranged at the cylinder head water outlet 32, and the first temperature sensor 100 is used to detect the temperature at the cylinder head water outlet 32. The second temperature sensor 110 is arranged at the cylinder block 10, and the second temperature sensor 110 is used to detect the temperature at the cylinder block water jacket 11. That is, the first temperature sensor 100 is located at the cylinder head water outlet 32, so that the first temperature sensor 100 can detect the temperature of the cooling liquid after flowing out of the cylinder head 20, and the second sensor is located at the cylinder block 10, so that the second sensor can detect the temperature of the cylinder block water jacket 11. Moreover, the first temperature sensor 100 and the second temperature sensor 110 are connected to the central controller, so that the central controller can collect the temperatures detected by the first temperature sensor 100 and the second temperature sensor 110, and then adjust the operation of the first thermostat 40 and the second thermostat 50.

[0058] In some embodiments, as shown in FIGS. 1-3, the engine uses the first thermostat 40 and the second thermostat 50 to control the opening and closing of the small circulation of the cooling system. The mechanical thermostat controls the small circulation, and the electronic thermostat controls the large circulation. The warming-up working condition is divided into a first circulation (i.e., cylinder head small circulation) and a second circulation (i.e., cylinder head and cylinder block small circulation).

[0059] First circulation: As shown in Fig. 1, the first thermostat 40 and the second thermostat 50 are both closed, the cooling liquid enters the cylinder head 20 through the pump body 80, then enters the first cylinder head water jacket 21 and the second cylinder head water jacket 22, the first cylinder head water jacket 21 and the second cylinder head water jacket 22 are connected in communication; then part of the cooling liquid enters the cylinder block water jacket 11 through the first cylinder head water jacket 21, at this time the cooling liquid in the cylinder block water jacket 11 is not circulated, the cooling liquid in the cylinder head 20 flows to the first thermostat 40; the first thermostat 40 senses the temperature of the cylinder head outlet 32, so that the cooling liquid in the cylinder block 10 can be quickly heated and overheating can be avoided; the cooling liquid returns to the pump body 80 through the oil cooler 70, and at the same time the cooling liquid in the cylinder head 20 flows into the EGR cooler 90.

[0060] Second circulation: As shown in Fig. 2, the first thermostat 40 is opened and the second thermostat 50 is closed, the cooling liquid enters the cylinder head 20 through the pump body 80, then enters the first cylinder head water jacket 21 and the second cylinder head water jacket 22, the first cylinder head water jacket 21 and the second cylinder head water jacket 22 are connected in communication; then part of the cooling liquid enters the cylinder block water jacket 11 through the first cylinder head water jacket 21, at this time the cooling liquid in the cylinder block 10 flows to the first thermostat 40 through the cylinder block outlet 33, and then flows to the engine outlet; the first thermostat 40 senses the temperature of the cylinder block outlet 33; the cooling liquid returns to the pump body 80 through the oil cooler 70, and at the same time the cooling liquid in the cylinder block 10 flows into the EGR cooler 90.

[0061] Engine warm-up condition: when the cylinder block outlet 33 is less than 70℃, the first thermostat 40 and the second thermostat 50 are both closed, the cooling liquid only performs the first circulation, the first thermostat 40 senses the temperature of the cylinder head outlet 32, since the first cylinder head water jacket 21 integrates the exhaust manifold cooling water jacket and the cooling liquid in the cylinder block water jacket 11 is not circulated, so that the heating of the cooling liquid can be accelerated, and then the engine can be warmed up. When the cylinder block outlet 33 is greater than 70℃, the first thermostat 40 is opened, the cooling liquid performs the second circulation, until the temperature of the cooling liquid reaches the full opening temperature (such as 85℃) of the first thermostat 40. The cooling liquid returns to the pump body 80 through the oil cooler 70, and the cooling liquid in the cylinder block 10 flows into the EGR cooler 90, so that the efficiency of the EGR cooler 90 can be improved, and then the fuel economy can be improved.

[0062] The third cycle (i.e. the cylinder head-cylinder block large cycle) is shown in Fig. 3. The first thermostat 40 and the second thermostat 50 are both opened. The cooling liquid enters the cylinder head 20 through the pump body 80, and then enters the first cylinder head water jacket 21 and the second cylinder head water jacket 22, which are connected in communication. Then, part of the cooling liquid enters the cylinder block water jacket 11 through the first cylinder head water jacket 21. At this time, the cooling liquid in the cylinder block 10 flows to the first thermostat 40 through the cylinder block water outlet 33, and then flows to the engine water outlet. The first thermostat 40 senses the temperature of the cylinder block water outlet 33, and the second thermostat 50 senses the temperature of the cooling liquid after the cylinder block water outlet 33 and the cylinder head water outlet 32 are combined. The cooling liquid after the cylinder block water outlet 33 and the cylinder head water outlet 32 are combined enters the radiator 120, so that the radiator 120 can cool the cooling liquid. The central controller collects the temperature signals of the cylinder block water jacket 11 and the cylinder head water outlet 32 in real time through the first temperature sensor 100 and the second temperature sensor 110, and then determines the temperature of the cooling liquid according to the temperature, and adjusts the opening of the second thermostat 50 and the flow of the pump body 80, so as to control the temperature of the cooling liquid. This setting can make the engine at the optimal working temperature, and thus improve the fuel economy.

[0063] Some embodiments of the present disclosure also provide a vehicle 2000. As shown in Fig. 7, the vehicle 2000 comprises the above-mentioned engine 1000. By arranging the cylinder block water jacket 11 on the cylinder block 10, and arranging the first cylinder head water jacket 21 and the second cylinder head water jacket 22 on the cylinder head 20, the heat in the combustion chamber and the cylinder block 10 can be transferred to the cooling liquid through heat conduction. The first cylinder head water jacket 21 is connected with the cylinder block water jacket 11 through the communication water path, and the first cylinder head water jacket 21 is connected in parallel with the second cylinder head water jacket 22. This setting can save the pipeline connection between the cylinder block water jacket 11 and the first cylinder head water jacket 21, and can also optimize the flow route of the cooling liquid, so as to improve the heat dissipation efficiency of the engine and save energy consumption.

[0064] In the description of the present disclosure, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0065] In the description of the disclosure, "a first feature", "a second feature" can include one or more of the features. In the description of the disclosure, the meaning of "a plurality of" is two or more. In the description of the disclosure, "on" or "under" of a first feature to a second feature can include that the first feature and the second feature are in direct contact, or can include that the first feature and the second feature are not in direct contact but are in contact through another feature between them. In the description of the disclosure, "on", "above" and "over" of a first feature to a second feature include that the first feature is directly above and obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature.

[0066] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example.

[0067] Although the embodiments of the present disclosure have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present disclosure, and the scope of the present disclosure is defined by the claims and their equivalents.

Claims

1. An engine (1000) comprising: a cylinder block (10); a cylinder block water jacket (11) provided in the cylinder block (10); a cylinder head (20) provided in the cylinder block (10); a first cylinder head water jacket (21) provided in the cylinder head (20); and a second cylinder head water jacket (22) provided in the cylinder head (20), the first cylinder head water jacket (21) being provided on a side of the second cylinder head water jacket (22) away from the cylinder block (10), the first cylinder head water jacket (21) and the second cylinder head water jacket (22) being connected in parallel, at least one of the cylinder block (10) or the cylinder head (20) being configured with a communication water passage that respectively communicates with the first cylinder head water jacket (21) and the cylinder block water jacket (11). The first cylinder head water jacket (21) has a water inlet and a water outlet, one end of the communication water passage communicates with the first cylinder head water jacket (21), and the one end of the communication water passage is located between the water inlet and the water outlet on a flow path of the first cylinder head water jacket (21); 2. The engine (1000) of claim 1, wherein, The distance between the one end of the communication water passage and the water inlet is less than the distance between the one end of the communication water passage and the water outlet on the flow path of the first cylinder head water jacket (21). 3.The engine (1000) according to claim 1 or 2, further comprising: a water receiving seat (30) provided in the cylinder head (20), the water receiving seat (30) comprising an engine water inlet (31), a cylinder head water outlet (32), and a cylinder block water outlet (33), the engine water inlet (31) being connected to the first cylinder head water jacket (21) and the second cylinder head water jacket (22) respectively, the cylinder head water outlet (32) being connected to the first cylinder head water jacket (21) and the second cylinder head water jacket (22) respectively, and the cylinder block water outlet (33) being connected to the cylinder block water jacket (11). The water receiving seat (30) comprises a connecting water channel connected between the cylinder head water outlet (32) and the cylinder block water outlet (33).

4. The engine (1000) of claim 3, wherein, 5.The engine (1000) according to any one of claims 1 to 4, further comprising: a first temperature regulator (40) provided at a water outlet position of the cylinder block water jacket (11), the first temperature regulator (40) being configured to adjust a water outlet flow rate of the cylinder block water jacket (11) according to temperature. 6.The engine (1000) according to claim 5, further comprising: a water receiving seat (30) provided in the cylinder head (20), the water receiving seat (30) comprising a cylinder block water outlet (33) connected to the water outlet position of the cylinder block water jacket (11), the first temperature regulator (40) being provided at the cylinder block water outlet (33). 7.The engine (1000) according to claim 6, further comprising: ​ A second temperature regulator (50), the water jacket (30) further comprises an engine water outlet and a cylinder head water outlet (32), the engine water outlet is communicated with the cylinder head water outlet (32), the cylinder head water outlet (32) is connected with the first cylinder head water jacket (21) and the second cylinder head water jacket (22) respectively, and the second temperature regulator (50) is connected with the engine water outlet.

8. The engine (1000) according to claim 7, further comprising: A connecting pipe (60), and the engine water outlet and the second temperature regulator (50) are connected through the connecting pipe (60).

9. The engine (1000) of claim 7, wherein, The second temperature regulator (50) has a first outlet (51) configured to be connected with a radiator (120).

10. The engine (1000) according to claim 9, further comprising: An oil cooler (70), an oil passage is formed in the cylinder block (10), the second temperature regulator (50) has a second outlet (52), the oil cooler (70) is arranged on the cylinder block (10) and connected with the oil passage, and the oil cooler (70) is connected with the second outlet (52).

11. The engine (1000) according to claim 10, further comprising: A pump body (80), the water jacket (30) comprises an engine water inlet (31), the engine water inlet (31) is connected with the first cylinder head water jacket (21) and the second cylinder head water jacket (22) respectively, a first end of the pump body (80) is connected with the oil cooler (70), and a second end of the pump body (80) is connected with the engine water inlet (31).

12. The engine (1000) of claim 7, wherein, The first temperature regulator (40) is one of a mechanical temperature regulator and an electronic temperature regulator, and the second temperature regulator (50) is the electronic temperature regulator.

13. The engine (1000) according to any one of claims 1 to 12, further comprising: An Exhaust Gas Re-circulation (EGR) cooler (90), the EGR cooler (90) is connected with a water outlet position of the cylinder block water jacket (11).

14. The engine (1000) according to claim 13, further comprising: A water jacket (30), the water jacket (30) is arranged on the cylinder head (20), the water jacket (30) comprises a cylinder block water outlet (33), and the EGR cooler (90) is connected with the cylinder block water outlet (33).

15. The engine (1000) of claim 13, wherein, The EGR cooler (90) has a third outlet configured to be connected with a heater core (91).

16. The engine (1000) according to any one of claims 1 to 15, further comprising: A first temperature sensor (100), the first temperature sensor (100) is arranged on a cylinder head water outlet (32), and the first temperature sensor (100) is configured to detect a temperature at the cylinder head water outlet (32); and A second temperature sensor (200), the second temperature sensor (200) is arranged on a cylinder block water outlet (33), and the second temperature sensor (200) is configured to detect a temperature at the cylinder block water outlet (33). a second temperature sensor (110) provided to the cylinder block (10), the second temperature sensor (110) being configured to detect a temperature at the cylinder block water jacket (11).

17. A vehicle (2000) comprising: An engine (1000) according to any one of claims 1 to 16.

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