CN210977659U

CN210977659U - Engine cooling system

Info

Publication number: CN210977659U
Application number: CN201921666700.9U
Authority: CN
Inventors: 夏朝辉
Original assignee: Zhejiang Geely Holding Group Co Ltd; Taizhou Binhai Geely Engine Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Taizhou Binhai Geely Engine Co Ltd
Priority date: 2019-10-07
Filing date: 2019-10-07
Publication date: 2020-07-10
Anticipated expiration: 2029-10-07

Abstract

The utility model provides an engine cooling system belongs to car technical field. The technical problems that an existing engine cooling system is high in water pump energy consumption and the like are solved. This engine cooling system includes engine body, thermal management module, radiator, warm braw core and electronic water pump, thermal management module is including having export one, export two and entry one the cavity, be used for controlling the valve module that each export of cavity opened and shut and can be according to the automatically controlled executor of this internal temperature regulation and control valve module degree of opening and shutting of engine, its characterized in that, electronic water pump, engine cavity and warm braw core lead to pipe end to end formation closed circuit one in proper order, export one, electronic water pump, engine body and entry lead to pipe link to each other in proper order and form closed circuit two, export two, radiator, electronic water pump, engine body and entry lead to pipe link to each other in proper order and form closed circuit three. The utility model discloses simplify the consumption that cooling system structure optimizes the water pump simultaneously.

Description

Engine cooling system

Technical Field

The utility model belongs to the technical field of the automobile body, concretely relates to engine cooling system.

Background

The engine warming-up and heat dissipation are both important to the fuel efficiency and emission performance of the engine, along with the increasingly strict requirements of national emission and fuel consumption regulations, the control of an engine cooling system tends to be refined and electrically controlled, and new technologies of cooling systems such as an electronic water pump and a heat management module are adopted by various host factories gradually.

The Chinese patent application document (application number: 201510143658.2) discloses a warm-up control method and a warm-up control device for an engine, which comprise a thermal management module, an engine water pump, an engine body (comprising an engine cylinder cover and a water distribution channel), a supercharger, an electronic water pump, a small circulation pipeline, an engine oil cooler, a radiator, a motor and a plurality of pipeline valves, wherein the thermal management module adjusts a ball valve by the motor according to a temperature threshold interval to which the current temperature of cooling liquid belongs, so that the opening and closing degree of the pipeline valves corresponding to parts of an engine cooling system is adjusted, and key parts in the engine cooling system are gradually heated in stages.

Although the oil consumption and the discharge amount of the engine are reduced to a certain extent by the aid of the technical scheme, the cooling system comprises the engine water pump and the electronic water pump, so that the system is high in cost and complex in pipeline arrangement, the engine water pump (namely the mechanical water pump) is adopted for small circulation and large circulation of engine body cooling and engine oil cooling circulation, the rotating speed cannot be adjusted according to actual conditions of all parts as required, and the power consumption of the water pump is large.

Disclosure of Invention

The utility model discloses to the above-mentioned problem that prior art exists, provide an engine cooling system, the utility model aims to solve the technical problem that: how to simplify the cooling system structure and optimize the power consumption of the water pump at the same time.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides an engine cooling system, includes engine body, thermal management module, radiator, warm braw core and electronic water pump, thermal management module is including having export one, export two and the cavity of entry one, being used for controlling the valve module that each export of cavity opened and shut and can be according to the automatically controlled executor of this internal temperature regulation and control valve module degree of opening and shutting of engine, its characterized in that, electronic water pump, engine cavity and warm braw core lead to pipe end to end formation closed circuit one in proper order, export one, electronic water pump, engine body and entry lead to pipe link to each other in proper order and form closed circuit two, export two, radiator, electronic water pump, engine body and entry lead to pipe link to each other in proper order and form closed circuit three.

When the air conditioner is started, the electronic water pump is started, and water liquid in the first closed loop circularly flows in the following mode: the water liquid flows out of the engine body, and returns to the engine body through the warm air core body and the electronic water pump, so that warm air in the vehicle can run. The heating management module adjusts the opening degree of the first outlet and the second outlet through the valve assembly according to the temperature threshold interval to which the current temperature of the cooling liquid belongs, so that the water liquid circulation state in the small circulation (namely, the second closed loop) and the large circulation (namely, the third closed loop) of cooling of the engine body is controlled, and the engine warming and heat dissipation can be adjusted as required. Compare the engine cooling system who contains two water pumps among the prior art, only set up an electronic water pump in this patent, not only be favorable to the cost of lowering system, the piping arrangement of simplified system, engine cooling's microcirculation, the electronic water pump is all adopted to the major cycle in addition, can avoid among the prior art mechanical water pump rotational speed can not adjust this drawback as required, realize the regulation as required of electronic water pump rotational speed to optimize the consumption of water pump, reduce the oil consumption and the emission of engine.

In the engine cooling system, the cavity is further provided with an outlet III, the cooling system further comprises an engine oil cooler, and the outlet III, the engine oil cooler, the engine body and the inlet I are sequentially connected through a water pipe to form a closed loop IV. The heating management module adjusts the opening degree of the first outlet, the second outlet and the third outlet through the valve assembly according to the temperature threshold interval to which the current temperature of the cooling liquid belongs, so that the water liquid circulation states of the small circulation (namely, the second closed loop) and the large circulation (namely, the third closed loop) of the engine cooling body and the engine oil cooling circulation (namely, the fourth closed loop) are controlled, the engine warming and heat dissipation can be adjusted as required, and the power consumption of the water pump is optimized.

In the engine cooling system, the valve assembly includes a ball valve electrically connected to the electric control actuator, a first pipeline valve disposed at the first outlet, a second pipeline valve disposed at the second outlet, and a third pipeline valve disposed at the third outlet, and the first pipeline valve, the second pipeline valve, and the third pipeline valve are respectively connected to the ball valve. The valve component has a simple structure, is beneficial to improving the installation convenience of the cooling system and reducing the cost, and can ensure the opening and closing accuracy of each outlet of the control cavity.

In the above engine cooling system, the engine body includes a cylinder body and a cylinder cover, the cylinder body has a first inlet, a second inlet and a first outlet, the cylinder cover has a first water inlet, a first water outlet and a second water outlet, an outlet of the electronic water pump is respectively communicated with the first inlet and the first water inlet through a water pipe, the first outlet is communicated with the first inlet through a water pipe, the first water outlet is communicated with an inlet of the warm air core through a water pipe, and the second water outlet is communicated with the second inlet through a water pipe. The arrangement of the pipelines is favorable for ensuring the cooling effect of the cylinder body and the cylinder cover and ensuring the fuel efficiency and the emission performance of the engine.

In foretell engine cooling system, cooling system still includes the inflation kettle, the inflation kettle has outlet, income gas port one and income gas port two, the outlet leads to pipe and the entry intercommunication of electronic water pump, income gas port one leads to the trachea and sets up the water pipe intercommunication in cylinder cap department, the export intercommunication of income gas port two through trachea and electronic water pump. The arrangement of the first air inlet and the second air inlet can timely remove bubbles in water at the outlet of the water pipe at the cylinder cover and the electronic water pump, and ensures smooth circulation of the water in each closed loop, thereby being beneficial to optimizing the power consumption of the water pump. When air flows through the air inlet I or the air inlet II, water in the expansion kettle can be squeezed and discharged from the water outlet, so that water in the cooling circulation can be supplemented, the circulation and adjustment of the water are further guaranteed, and the power consumption of the water pump is optimized.

In the engine cooling system, a water temperature sensor is arranged in a water pipe arranged at the cylinder cover. The electric control actuator receives water temperature information of a water pipe in the cylinder cover, which is transmitted by the water temperature sensor, and the opening degree of each outlet of the cavity is adjusted by the regulating and controlling valve assembly, so that the water temperature in the engine body can be timely and effectively regulated according to actual requirements, and the fuel efficiency and the emission performance of the engine are guaranteed.

In the above engine cooling system, the cooling system further includes a supercharger, and the supercharger is connected in parallel to the electronic water pump through a water pipe. The booster can heat the water liquid flowing through the booster, and the heated water liquid can sequentially flow into the warm air core body through the electronic water pump and the engine body, so that the warm air effect of the whole machine can be improved.

Compared with the prior art, the utility model has the advantages of it is following: the electronic water pumps in the medium warm air loop are adopted by the water pumps in the large circulation, the small circulation and the engine oil cooling circulation of the engine body, so that the number of the water pumps in the engine cooling system is reduced, the cost of the system is reduced, the pipeline arrangement of the system is simplified, the rotation speed of the electronic water pumps can be adjusted as required, the power consumption of the water pumps is optimized, and the oil consumption and the emission of the engine are reduced.

Drawings

Fig. 1 is a schematic structural diagram of the first embodiment.

FIG. 2 is a schematic diagram of the water circulation in the first closed loop according to the first embodiment.

FIG. 3 is a schematic diagram of the water circulation in the first closed loop and the second closed loop according to the first embodiment.

FIG. 4 is a schematic diagram of the water circulation in the first, second and fourth closed circuits according to the first embodiment.

FIG. 5 is a schematic diagram of the water circulation in the first, third and fourth closed circuits according to the first embodiment.

In the figure, 1, a heat sink; 2. an engine body; 21. a cylinder body; 21a, a first inflow port; 21b, a second inflow port; 21c, a first outflow port; 22. a cylinder cover; 22a, a water inlet I; 22b and a first water outlet; 22c and a water outlet II; 3. a thermal management module; 3a, an outlet I; 3b, an outlet II; 3 c: an outlet III; 3d, an inlet I; 31. a cavity; 32. an electric control actuator; 33. a valve assembly; 4. a warm air core body; 5. an electronic water pump; 6. an oil cooler; 7. an expansion kettle; 7a, a water outlet; 7b, a first air inlet; 7c, an air inlet II; 8. a water temperature sensor; 9. a supercharger.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1, the present embodiment includes an engine body 2, a thermal management module 3, a radiator 1, an oil cooler 6, a warm air core 4 and an electronic water pump 5, the thermal management module 3 includes a cavity 31 having a first outlet 3a, a second outlet 3b, a third outlet 3c and a first inlet 3d, a valve assembly 33 for controlling the opening and closing of the first outlet 3a, the second outlet 3b and the third outlet 3c, and an electric actuator 32 capable of adjusting the opening and closing degree of the valve assembly 33 according to the water temperature in the engine body 2, the electronic water pump 5, the engine cavity 31 and the warm air core 4 are sequentially connected end to end through water pipes to form a first closed loop (i.e., warm air circulation), the first outlet 3a, the electronic water pump 5, the engine body 2 and the first inlet 3d are sequentially connected through water pipes to form a second closed loop (i.e., small circulation), the second outlet 3b, the radiator 1, the electronic water pump 5, the engine body 2 and the first inlet 3d, the outlet three 3c, the engine body 2 and the inlet one 3d are connected in sequence through a water pipe to form a closed loop four (namely, engine oil cooling circulation). As shown in fig. 2, when the air conditioner is turned on, the electronic water pump 5 is turned on, and the water in the first closed loop circulates and flows in the following manner: the water liquid flows out from the engine body 2, returns to the engine body 2 through the warm air core body 4 and the electronic water pump 5, and can enable warm air in the vehicle to run. As shown in fig. 3 to 5, the electric control actuator 32 adjusts the opening degree of the first outlet 3a, the second outlet 3b and the third outlet 3c through the valve assembly 33 according to the temperature threshold range to which the current temperature of the coolant belongs, so as to control the water circulation state in the small circulation and the large circulation of the cooling of the engine body 2 and the water circulation of the oil cooler 6, and realize the adjustment of the warming-up and the heat dissipation of the engine as required. Only one electronic water pump 5 is arranged in the embodiment, so that the cost of the system is reduced, the pipeline arrangement of the system is simplified, the electronic water pump 5 is adopted in the small circulation, the large circulation and the engine oil cooling circulation of engine cooling, and the rotating speed of the electronic water pump 5 can be adjusted as required, so that the power consumption of the water pump is optimized, and the oil consumption and the emission of the engine are reduced.

The valve assembly 33 comprises a ball valve, a first pipeline valve arranged at the first outlet 3a, a second pipeline valve arranged at the second outlet 3b and a third pipeline valve arranged at the third outlet 3c, wherein the first pipeline valve, the second pipeline valve and the third pipeline valve are respectively connected with the ball valve, the ball valve is electrically connected with the electric control actuator 32 through a motor, the valve assembly 33 is simple in structure, the installation convenience and the cost of the embodiment are improved, and the opening and closing accuracy of each outlet of the control cavity 31 can be guaranteed.

The engine body 2 comprises a cylinder body 21 and a cylinder cover 22, the cylinder body 21 is provided with a first inlet 21a, a second inlet 21b and a first outlet 21c, the cylinder cover 22 is provided with a first water inlet 22a, a first water outlet 22b and a second water outlet 22c, an outlet of the electronic water pump 5 is respectively communicated with the first inlet 21a and the first water inlet 22a through water pipes, the first outlet 21c is communicated with the first inlet 3d through a water pipe, the first water outlet 22b is communicated with an inlet of the warm air core body 4 through a water pipe, and the second water outlet 22c is communicated with the second inlet 21b through a water pipe. The arrangement of the pipelines is beneficial to ensuring the cooling effect of the cylinder body 21 and the cylinder cover 22 and ensuring the fuel efficiency and the emission performance of the engine.

A water temperature sensor 8 is arranged in the water pipe arranged at the cylinder cover 22. The electric control actuator 32 receives water temperature information of the water pipe in the cylinder cover 22 transmitted by the water temperature sensor 8, and the opening and closing degree of each outlet of the cavity 31 is adjusted by the regulating valve assembly 33, so that the water temperature in the engine body 2 can be timely and effectively adjusted according to actual requirements, and the fuel efficiency and the emission performance of the engine are guaranteed.

The embodiment further comprises an expansion kettle 7, wherein the expansion kettle 7 is provided with a water outlet 7a, a first air inlet 7b and a second air inlet 7c, the water outlet 7a is communicated with an inlet of the electronic water pump 5 through a water pipe, the first air inlet 7b is communicated with the water pipe arranged at the cylinder cover 22 through an air pipe, and the second air inlet 7c is communicated with an outlet of the electronic water pump 5 through an air pipe. The arrangement of the first air inlet 7b and the second air inlet 7c can timely remove bubbles in water liquid at the water pipe at the cylinder cover 22 and the outlet of the electronic water pump 5, and ensure smooth circulation of the water liquid in each closed loop, thereby being beneficial to optimizing the power consumption of the water pump. When air flows through the air inlet I7 b or the air inlet II 7c, the water in the expansion kettle 7 can be squeezed and discharged from the water outlet 7a, so that the water in the cooling circulation can be supplemented, the circulation and the regulation of the water are further ensured, and the power consumption of the water pump is optimized.

The embodiment further comprises a supercharger 9 connected on the electronic water pump 5 in parallel through a water pipe, the supercharger 9 can heat water liquid flowing through the supercharger, and the heated water liquid can flow into the warm air core 4 through the electronic water pump 5 and the engine body 2 in sequence, so that the warm air effect of the whole machine is improved.

The working principle of this embodiment is specifically: after the vehicle is started, the temperature transmitter detects the water temperature at the engine cylinder head 22 and transmits a water temperature signal to the electric control actuator 32, so that the thermal management module 3 detects the current temperature of the engine water (i.e. cooling water) (the working principle of the thermal management module 3 is the same as that in the prior art). And then judging the temperature interval to which the current temperature belongs according to a plurality of preset temperature thresholds, wherein the temperature value of each temperature threshold interval can be adjusted according to the difference of the performance and the service environment of the engine if four temperature threshold intervals, namely a first temperature threshold interval to a fourth temperature threshold interval, can be preset. After detecting the water temperature of the cylinder head 22, the electric control actuator 32 determines that the current water temperature belongs to the temperature threshold interval.

The electric control actuator 32 adjusts the current position of the ball valve by using the motor according to the temperature threshold interval to which the current temperature of the cooling liquid belongs, wherein the communication state of the pipeline valve corresponding to the part of the engine cooling system can be adjusted by adjusting the position of the ball valve.

The first temperature threshold interval is greater than-40 ℃ and less than or equal to 50 ℃, the second temperature threshold interval is greater than 50 ℃ and less than or equal to 70 ℃, the third temperature threshold interval is greater than 70 ℃ and less than or equal to 95 ℃, and the fourth temperature threshold interval is greater than 95 ℃ and less than or equal to 105 ℃. The street temperature of the temperature threshold interval is only an example, and a person skilled in the art can adjust the street temperature value of each temperature threshold interval according to the performance of the engine and the practical environment.

When the water temperature detected by the water temperature sensor 8 is within a first temperature threshold range, the current position of the ball valve is controlled to be at a first preset angle, so that all pipeline valves are kept in a closed state, the electronic water pump 5 does not rotate, water liquid in all circulation loops does not circulate, and the quick heating of the engine is facilitated. Meanwhile, as shown in fig. 2, the warm air conditioner is started, the electronic water pump 5 is started, and the water liquid heated by the supercharger 9 can be sequentially conveyed to the cylinder cover 22 and the warm air core 4 under the driving of the electronic water pump 5, so that the warm-up rate of the engine can be further increased.

When the water temperature detected by the water temperature sensor 8 is within the second temperature threshold range, as shown in fig. 3, the current position of the control ball valve is at the second preset angle, the first pipeline valve is opened, and the other pipeline valves are all in a closed state. Under the drive of the electronic water pump 5, the water circularly flows in the small circulation (namely, the closed loop II) and the warm air circulation, so that partial cooling of the cylinder body 21 can be realized, the local temperature overheating of the cylinder body 21 can be avoided, the water can be placed for over-cooling, the water rises too slowly, and the warming rate is inhibited.

When the water temperature detected by the water temperature sensor 8 is within the third temperature threshold range, the temperature of the water liquid is increased to 70 ℃, the temperature of the engine oil is relatively low, and the engine oil needs to be heated. As shown in fig. 4, the current position of the control ball valve is at a third preset angle, the first pipeline valve and the third pipeline valve are both opened, and the second pipeline valve is in a closed state. Under the drive of the electronic water pump 5, water liquid circularly flows in the engine oil cooling circulation, the small circulation (namely, the closed loop II) and the warm air circulation, and the temperature rise of the engine oil and the cooling of the cylinder body 21 can be realized.

When the water temperature detected by the water temperature sensor 8 is in the fourth temperature threshold interval, that is, as the water temperature and the engine load increase, the engine needs to dissipate heat, and at the same time, the oil temperature is higher than the water temperature, and the oil cooler 6 needs to dissipate heat. As shown in fig. 5, the current position of the control ball valve is located at a fourth preset angle, the second pipeline valve and the third pipeline valve are both opened, and the first pipeline valve is gradually closed. Under the drive of the electronic water pump 5, water liquid circularly flows in the large circulation, the engine oil cooling circulation and the warm air circulation, and the cooling of the cylinder body 21 and the engine oil cooler 6 can be realized.

After the engine is stopped, the electronic water pump 5 continues to run for a certain time to cool the engine, so that the engine is prevented from being damaged due to excessive local temperature.

Example two

The technical scheme of this embodiment is basically the same as that of the first embodiment, and the difference is that the valve assembly 33 includes a first electromagnetic valve, a second electromagnetic valve and a third electromagnetic valve, which are electrically connected with the electric control actuator 32, the first electromagnetic valve is disposed at the first outlet 3a, the second electromagnetic valve is disposed at the second outlet 3b, the third electromagnetic valve is disposed at the third outlet 3c, and the electric control actuator 32 can regulate the opening and closing of the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve according to the received water temperature information, so as to realize the water liquid circulation state in the large circulation, the small circulation and the engine oil cooling circulation of the engine.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although 1, a heat sink is used more herein; 2. an engine body; 21. a cylinder body; 21a, a first inflow port; 21b, a second inflow port; 21c, a first outflow port; 22. a cylinder cover; 22a, a water inlet I; 22b and a first water outlet; 22c and a water outlet II; 3. a thermal management module; 3a, an outlet I; 3b, an outlet II; 3 c: an outlet III; 3d, an inlet I; 31. a cavity; 32. an electric control actuator; 33. a valve assembly; 4. a warm air core body; 5. an electronic water pump; 6. an oil cooler; 7. an expansion kettle; 7a, a water outlet; 7b, a first air inlet; 7c, an air inlet II; 8. a water temperature sensor; 9. superchargers, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. An engine cooling system comprises an engine body (2), a thermal management module (3), a radiator (1), a warm air core body (4) and an electronic water pump (5), wherein the thermal management module (3) comprises a cavity (31) with a first outlet (3a), a second outlet (3b) and a first inlet (3d), a valve assembly (33) for controlling the opening and closing of each outlet of the cavity (31) and an electric control actuator (32) capable of regulating the opening and closing degree of the valve assembly (33) according to the water temperature in the engine body (2), and is characterized in that the electronic water pump (5), the engine cavity (31) and the warm air core body (4) are sequentially connected end to end through water pipes to form a first closed loop, the first outlet (3a), the electronic water pump (5), the engine body (2) and the first inlet (3d) are sequentially connected through water pipes to form a second closed loop, and the outlet II (3b), the radiator (1), the electronic water pump (5), the engine body (2) and the inlet I (3d) are sequentially connected through a water pipe to form a closed loop III.

2. The engine cooling system of claim 1, characterized in that the cavity (31) further has an outlet three (3c), the cooling system further comprises an oil cooler (6), and the outlet three (3c), the oil cooler (6), the engine body (2) and the inlet one (3d) are connected in sequence through a water pipe to form a closed loop four.

3. Engine cooling system according to claim 2, characterized in that the valve assembly (33) comprises a ball valve electrically connected to the electrically controlled actuator (32), a first line valve arranged at the first outlet (3a), a second line valve arranged at the second outlet (3b) and a third line valve arranged at the third outlet (3c), the first line valve, the second line valve and the third line valve being connected to the ball valve respectively.

4. The engine cooling system according to claim 2, wherein the engine body (2) includes a cylinder block (21) and a cylinder head (22), the cylinder block (21) has a first inlet (21a), a second inlet (21b) and a first outlet (21c), the cylinder head (22) has a first inlet (22a), a first outlet (22b) and a second outlet (22c), the outlet of the electronic water pump (5) is respectively communicated with the first inlet (21a) and the first inlet (22a) through a water pipe, the first outlet (21c) is communicated with the first inlet (3d) through a water pipe, the first outlet (22b) is communicated with the inlet of the warm air core (4) through a water pipe, and the second outlet (22c) is communicated with the second inlet (21b) through a water pipe.

5. The engine cooling system according to claim 4, characterized in that the cooling system further comprises an expansion water bottle (7), the expansion water bottle (7) is provided with a water outlet (7a), a first air inlet (7b) and a second air inlet (7c), the water outlet (7a) is communicated with an inlet of the electronic water pump (5) through a water pipe, the first air inlet (7b) is communicated with a water pipe arranged at the cylinder cover (22) through an air pipe, and the second air inlet (7c) is communicated with an outlet of the electronic water pump (5) through an air pipe.

6. Engine cooling system according to claim 4, characterized in that a water temperature sensor (8) is provided in the water pipe provided at the cylinder head (22).

7. Engine cooling system according to any one of claims 1-6, characterized in that the cooling system further comprises a supercharger (9), and the supercharger (9) is connected in parallel to the electric water pump (5) through a water pipe.