CN216811863U - Engine cooling system and engine - Google Patents
Engine cooling system and engine Download PDFInfo
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- CN216811863U CN216811863U CN202123389071.XU CN202123389071U CN216811863U CN 216811863 U CN216811863 U CN 216811863U CN 202123389071 U CN202123389071 U CN 202123389071U CN 216811863 U CN216811863 U CN 216811863U
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Abstract
The embodiment of the application provides an engine cooling system and engine, relates to engine technical field for solve the poor technical problem of engine reliability, this engine cooling system include low temperature water pump, low temperature circulation pipeline and machine oil cooler, and low temperature water pump and machine oil cooler establish ties on low temperature circulation pipeline, and machine oil cooler has into oil pipe way and goes out oil pipe way, advances oil pipe way and goes out and is provided with first governing valve between the oil pipe way. According to the embodiment of the application, the engine oil cooler is arranged on the low-temperature circulating pipeline, so that the engine oil can be ensured to be at a lower temperature, and the risk of piston burning loss or carbonization is reduced; in addition, be provided with first governing valve between oil inlet pipe way and the oil outlet pipe way of oil cooler for when low load operation operating mode, improve the temperature of coolant liquid, and then improve the temperature of machine oil, improve the fuel economy of engine. When the engine is in a high-load operation condition, the temperature of the cooling liquid can be reduced, and the reliability of the engine is improved.
Description
Technical Field
The embodiment of the application relates to the technical field of engines, in particular to an engine cooling system and an engine.
Background
The cooling system of the engine usually dissipates a part of heat absorbed by the heated components in time to ensure that the engine operates in a proper temperature state.
In the related art, an engine cooling system includes a high-temperature circulating cooling system and a low-temperature cooling circulating system which are relatively independent, wherein the high-temperature circulating cooling system generally includes a high-temperature circulating pipeline, and a high-temperature water pump, an oil cooler, a machine body cylinder cover and the like which are arranged on the high-temperature circulating pipeline.
However, the oil has a disadvantage of poor reliability due to damage to the piston caused by a high temperature after being cooled by the oil cooler.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, embodiments of the present application provide an engine cooling system and an engine, which can reduce the risk of piston damage, and thus can improve the reliability of the engine.
In order to achieve the above object, the embodiments of the present application provide the following technical solutions:
a first aspect of an embodiment of the present application provides an engine cooling system, including: the low-temperature water pump and the engine oil cooler are connected in series on the low-temperature circulating pipeline;
the oil cooler is provided with an oil inlet pipeline and an oil outlet pipeline, a first regulating valve is arranged between the oil inlet pipeline and the oil outlet pipeline, and the first regulating valve is used for regulating the amount of oil entering the oil cooler
In a possible implementation manner, a first pipeline is arranged between the oil inlet pipeline and the oil outlet pipeline, and the first regulating valve is arranged on the first pipeline.
In one possible implementation, a filter is provided on the flowline.
In a possible implementation manner, a temperature sensor is further arranged on the oil outlet pipeline, and the temperature sensor is positioned on one side, away from the oil cooler, of the filter.
In a possible implementation manner, an intercooler and a radiator are further arranged on the low-temperature circulation pipeline;
the intercooler is located between the oil cooler and the radiator in a flow direction of the coolant.
In a possible implementation manner, the cooling system further comprises a second regulating valve, wherein the second regulating valve is connected to the radiator in parallel and is used for regulating the amount of the cooling liquid entering the radiator.
In a possible implementation manner, the system further comprises a second pipeline, wherein one end of the second pipeline is connected with the second regulating valve, and the other end of the second pipeline is connected with a low-temperature circulating pipeline between the radiator and the low-temperature water pump.
In a possible implementation manner, the device further comprises a controller, wherein the controller is respectively connected with the first regulating valve and the second regulating valve;
the controller is used for adjusting the opening degrees of the first regulating valve and the second regulating valve according to the opening degree of an accelerator pedal of an engine and the rotating speed of the engine.
In one possible implementation, the controller is connected with a temperature sensor;
the controller is used for receiving the actual temperature detected by the temperature sensor and controlling the opening degrees of the first regulating valve and the second regulating valve according to the actual temperature
A second aspect of embodiments of the present application provides an engine, comprising: a machine body and the engine cooling system described in the possible implementation above, the engine cooling system being disposed within the machine body;
the engine body is internally provided with a position sensor and a rotating speed sensor, the position sensor and the rotating speed sensor are respectively connected with the controller, wherein the position sensor is used for detecting the opening degree of an accelerator pedal of the engine, and the rotating speed sensor is used for detecting the rotating speed of the engine.
In the engine cooling system and the engine provided by the embodiment of the application, the engine oil cooler is arranged on the low-temperature circulating pipeline, so that the engine oil can be ensured to be at a lower temperature, and the risk of piston burning loss or carbonization is reduced; in addition, be provided with first governing valve between oil inlet pipe way and the oil outlet pipe way of oil cooler, adjust the machine oil volume that gets into in the oil cooler through first governing valve for when low load operation condition, can improve the temperature of coolant liquid, and then improve the temperature of machine oil, improve the fuel economy nature of engine. When the engine is in a high-load operation condition, the temperature of the cooling liquid can be reduced, so that the temperature of engine oil is reduced, and the reliability of the engine is improved.
In addition to the technical problems addressed by the embodiments of the present application, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical problems that the cooling system of the engine and the engine provided by the embodiments of the present application can solve, other technical features included in the technical solutions, and advantages brought by the technical features will be further described in detail in the detailed description.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic illustration of an engine cooling system provided by an embodiment of the present application;
fig. 2 is a control schematic diagram of an engine according to an embodiment of the present application.
Description of reference numerals:
10: a circulation line;
20: a low-temperature water pump;
30: an oil cooler;
31: an oil inlet pipeline;
32: an oil outlet pipeline;
40: a first regulating valve;
50: a first pipeline;
60: a filter;
70: a temperature sensor;
80: an intercooler;
90: a heat sink;
100: a second regulating valve;
110: a second pipeline;
120: a controller;
130: a position sensor;
140: a rotation speed sensor.
Detailed Description
As described in the background art, the engine cooling system in the related art has a technical problem that the temperature of the engine oil is relatively high after being cooled by the oil cooler, and the inventor researches and discovers that the problem is caused because the oil cooler is connected to a high-temperature circulation cooling pipeline, the temperature of cooling liquid in the high-temperature circulation cooling pipeline is relatively high, the temperature of the engine oil in the engine is relatively high when the engine is in a high-load working state, and the temperature of the engine oil is still relatively high after the engine oil is cooled by the oil cooler, so that the risk of coking or carbonization of the engine oil in a piston is caused, and the reliability is poor.
In order to solve the technical problems, the embodiment of the application provides an engine cooling system and an engine, wherein an engine oil cooler is arranged on a low-temperature circulation pipeline, so that the engine oil can be ensured to be at a lower temperature, and the risk of coking or carbonization of the engine oil in a piston is reduced; in addition, a first regulating valve is arranged between an oil inlet pipeline and an oil outlet pipeline of the engine oil cooler, and the amount of engine oil entering the engine oil cooler is regulated through the first regulating valve, so that the temperature of cooling liquid can be increased under the low-load operation working condition, the temperature of the engine oil is further increased, and the fuel economy of an engine is improved; meanwhile, when the engine is in a high-load operation condition, the temperature of the cooling liquid can be reduced, so that the temperature of engine oil is reduced, and the reliability of the engine is improved.
In order to make the aforementioned objects, features and advantages of the embodiments of the present application more comprehensible, embodiments of the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1, the embodiment of the present application provides an engine cooling system, which is applied to an engine and used for performing heat dissipation and temperature reduction on various components of the engine to ensure that the engine can be maintained in a proper temperature range.
The engine cooling system may include a low-temperature water pump 20, a low-temperature circulation pipeline 10, and an oil cooler 30, where the low-temperature water pump 20, the low-temperature circulation pipeline 10, and the oil cooler 30 form a low-temperature circulation system, and it should be noted that, in this embodiment, low temperature and high temperature refer to the temperature of the coolant in the pipeline, for example, low temperature generally refers to the temperature of the coolant being between 40 ℃ and 50 ℃, and high temperature generally refers to the temperature of the coolant being around 90 ℃.
In the present embodiment, the above-mentioned components are connected together by water pipes so as to form a closed circulation line 10.
The low-temperature water pump 20 is used for pressurizing the cooling liquid and conveying the pressurized cooling liquid to the engine oil cooler 30 so as to cool the engine oil flowing through the engine oil cooler 30, wherein the low-temperature water pump 20 can adopt an electronic water pump, the electronic water pump has the functions of idle running protection, overvoltage protection and the like, and the flow of the cooling liquid output by the electronic water pump can be controlled according to the working condition of an engine so as to ensure that the engine oil can be well cooled.
It should be noted that the engine cooling system in this embodiment may further include an expansion tank (not shown in the figure), and the expansion tank may be connected to the low-temperature water pump 20 through a water replenishing pipeline, so as to reduce a loss phenomenon caused by high-temperature evaporation of the coolant, and ensure sufficient supply of the coolant, thereby achieving replenishment of the coolant in the circulation pipeline.
The oil cooler 30 is disposed on the circulation line 10, wherein the oil cooler 30 has an oil inlet line 31 and an oil outlet line 32, and when the coolant flows through the oil cooler 30 through the circulation line 10, the coolant can perform heat convection with the oil in the oil inlet line 31, so that the temperature of the oil can be controlled within a desired range.
The cooled oil then passes through the oil outlet line 32 to components of the engine, such as the piston or the cylinder, to achieve normal operation of the piston and the cylinder.
A first regulating valve 40 is disposed between the oil inlet line 31 and the oil outlet line 32, the first regulating valve 40 is used for regulating the amount of engine oil entering the engine oil cooler 30, and illustratively, a first line 50 is disposed between the oil inlet line 31 and the oil outlet line 32, and the first regulating valve 40 is disposed on the first line 50, that is, the first regulating valve 40 is disposed in parallel with the engine oil cooler 30.
When the engine is in the low-load operation condition, the temperature of the engine oil is lower, correspondingly, the viscosity of the engine oil is increased, the friction force between the engine oil and the piston is increased, and the consumption of fuel oil is increased, therefore, the first regulating valve 40 is arranged in the embodiment, when the engine is in the low-load operation condition, the opening degree of the first regulating valve 40 can be increased, more engine oil directly enters the oil outlet pipeline 32 through the first pipeline 50 and the first regulating valve 40, the amount of the engine oil entering the engine oil cooler 30 is reduced, therefore, the temperature of the engine oil can be increased, the viscosity of the engine oil is reduced, the friction resistance of the engine oil is reduced, and the fuel economy of the engine is improved.
When the engine is in a high-load operation condition, the temperature of the engine oil is high, so that the engine oil is easy to coke and deposit carbon in the piston, and the piston is damaged, and the defect of poor reliability is overcome.
Therefore, in the present embodiment, the engine oil cooler 30 is disposed in the low temperature circulation line 10 and is used in cooperation with the first regulating valve 40, so that the phenomenon that the engine oil is overheated or overcooled can be avoided, and the reliability and the fuel economy of the engine are ensured.
In some embodiments, the oil outlet line 32 is provided with a filter 60, and the filter 60 is located between the first regulating valve 40 and a working component of the engine, for example, the filter 60 is located between the first regulating valve 40 and the piston, so that the filter 60 can be used for filtering the engine oil and intercepting impurities, thereby improving the purity of the engine oil and further prolonging the service life of the piston.
In some embodiments, a temperature sensor 70 is further disposed on the oil outlet line 32, the temperature sensor 70 is located on a side of the filter 60 away from the oil cooler 30, and the temperature of the oil in the oil outlet line 32 can be detected in real time by the temperature sensor 70, so as to provide a guarantee for reliability and fuel economy of the engine.
In some embodiments, the low temperature circulation line 10 is further provided with an intercooler 80 and a radiator 90, and the intercooler 80 is disposed between the oil cooler 30 and the radiator 90 in the flow direction of the cooling liquid, i.e., the direction of the arrow in fig. 1.
The intercooler 80 is used for reducing the temperature of the high-temperature gas after pressurization, so as to guarantee the air input of the fresh air, therefore, a circulation channel is arranged in the intercooler 80, the circulation channel is used for facilitating air circulation, when the cooling liquid flows through the intercooler 80 through the circulation pipeline 10, the heat convection can be carried out on the air in the circulation channel, the temperature of the gas after intercooling is effectively reduced, the temperature of the air is controlled in an ideal range, and further the air temperature meets the matching requirements of a supercharger and engine combustion, so that the economy and the reliability of the engine are improved.
It should be noted that in this embodiment, the intercooler 80 and the radiator 90 are conventional devices in the art, and therefore, the structures of the intercooler 80 and the radiator 90 are not described in detail in this embodiment.
In some embodiments, the engine cooling system further includes a second regulating valve 100, the second regulating valve 100 is connected in parallel to the radiator 90 for regulating the amount of the cooling liquid entering into the radiator 90, and illustratively, one end of a second pipeline 110 is connected to the second regulating valve 100, and the other end is connected to the low-temperature circulation pipeline 10 between the radiator 90 and the low-temperature water pump 20.
When the engine is under the low load operation condition, the engine oil that needs the engine is in higher temperature to reduce the frictional force of engine, at this moment, can increase the aperture of second governing valve 100, make more coolant liquid directly flow back to low temperature water pump 20 department through circulation pipeline 10, so, can improve the temperature of coolant liquid, and then improve the temperature of engine oil, improve the fuel economy of engine.
When the engine is in a high-load operation condition, the engine oil of the engine needs to be at a lower temperature to prevent the engine oil from coking or carbon deposition at the piston, at the moment, the opening degree of the second regulating valve 100 can be reduced, so that more cooling liquid flows back to the low-temperature water pump 20 through the radiator 90, the temperature of the cooling liquid can be reduced, the temperature of the engine oil is further reduced, and the reliability of the engine is improved.
In some embodiments, as shown in FIG. 2, the engine cooling system further includes a controller 120, the controller 120 being coupled to the first and second regulator valves 40 and 100, respectively.
The controller 120 is configured to adjust the opening degrees of the first regulating valve 40 and the second regulating valve 100 according to the opening degree of an accelerator pedal of the engine and the rotation speed of the engine.
For example, whether the engine is in a low load condition or in a high load condition can be determined by detecting the opening of the accelerator pedal and the rotation speed of the engine, and then the controller 120 controls the openings of the first regulating valve 40 and the second regulating valve 100 according to the determination result, so that the purpose of reasonably controlling the temperature of the oil is achieved, and the reliability and the fuel economy of the engine are improved.
In some embodiments, the controller 120 may also be connected to the temperature sensor 70, and the controller 120 is configured to receive the detected actual temperature of the temperature sensor 70 and control the opening degrees of the first regulating valve 40 and the second regulating valve 100 according to the actual temperature.
For example, the temperature sensor 70 may monitor the actual temperature of the engine oil in the oil return pipe in real time, and transmit the actual temperature to the controller 120, where a first temperature threshold and a second temperature threshold are stored in the controller 120, where the first temperature threshold may correspond to the appropriate temperature of the engine under the low-load operating condition, and the second temperature threshold may correspond to the appropriate temperature of the engine under the high-load operating condition, and if the actual temperature of the engine under the low-load operating condition is determined to be smaller than the first temperature threshold, it is proved that the temperature of the engine oil is too low, and at this time, the opening degree of the first regulating valve 40 may be increased and the opening degree of the second regulating valve 100 may be decreased. If the engine is in the high-load operation condition, the actual temperature is judged to be greater than the second temperature threshold value, the oil temperature of the engine oil is proved to be too high, and at the moment, the opening degree of the first regulating valve 40 can be reduced and the opening degree of the second regulating valve 100 can be increased.
In the embodiment, the actual temperature of the engine oil is detected by the temperature sensor 70, and is matched with the opening degree of an accelerator pedal of the engine and the rotating speed of the engine, so that a guarantee is provided for the accurate control of the controller 120.
The embodiment of the application also provides an engine, which comprises an engine body and the engine cooling system in any one of the embodiments, wherein the engine cooling system is arranged in the engine body; a position sensor 130 and a rotation speed sensor 140 are arranged in the body, and the position sensor 130 and the rotation speed sensor 140 are respectively connected with the controller 120, wherein the position sensor 130 is used for detecting the opening degree of an accelerator pedal of the engine, and the rotation speed sensor 140 is used for detecting the rotation speed of the engine.
The present embodiment provides a detection signal for the controller 120 through the setting of the position sensor 130 and the rotation speed sensor 140, so that the controller 120 determines whether the engine is in a low-load operation condition or in a high-load operation condition, and then accurately controls the opening degree of the first regulating valve 40 and the second regulating valve 100, so that when the engine is in the low-load operation condition, the temperature of the coolant can be increased, and then the temperature of the engine oil is increased, and the fuel economy of the engine is improved. When the engine is in a high-load operation condition, the temperature of the cooling liquid can be reduced, so that the temperature of engine oil is reduced, and the reliability of the engine is improved.
It should be noted that the relationship between the opening degree of the accelerator pedal, the rotation speed of the engine, and the temperature of the engine oil may also be obtained in other manners, for example, based on a temperature measurement test of engine components and a corresponding relationship test of the opening degree of the accelerator pedal and the rotation speed of the engine, a waveform diagram of the opening degree of the accelerator pedal, the rotation speed, and the temperature of the engine oil is drawn, so as to obtain the relationship between different working conditions of the engine and the temperature of the engine oil, and combine the relationship with the temperature measured by the temperature sensor to form an instruction for adjusting the opening degrees of the first regulating valve and the second regulating valve.
The embodiments or implementation modes in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
In general, terms should be understood at least in part by their use in context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in the singular or may be used to describe a combination of features, structures, or characteristics in the plural, depending, at least in part, on the context. Similarly, terms such as "a" or "the" may also be understood to convey a singular use or to convey a plural use, depending at least in part on the context.
It should be readily understood that "on … …", "above … …" and "above … …" in this disclosure should be interpreted in the broadest sense such that "on … …" means not only "directly on something", but also includes the meaning of "on something" with intervening features or layers therebetween, and "above … …" or "above … …" includes not only the meaning of "above something" or "above" but also includes the meaning of "above something" or "above" with no intervening features or layers therebetween (i.e., directly on something).
Furthermore, spatially relative terms, such as "below," "lower," "above," "upper," and the like, may be used herein for ease of description to describe one element or feature's illustrated relationship to another element or feature. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly as well.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. An engine cooling system is characterized by comprising a low-temperature water pump, a low-temperature circulating pipeline and an engine oil cooler, wherein the low-temperature water pump and the engine oil cooler are connected in series on the low-temperature circulating pipeline;
the oil cooler is provided with an oil inlet pipeline and an oil outlet pipeline, a first regulating valve is arranged between the oil inlet pipeline and the oil outlet pipeline, and the first regulating valve is used for regulating the amount of oil entering the oil cooler.
2. The engine cooling system according to claim 1, characterized in that a first line is provided between the oil inlet line and the oil outlet line, and the first regulating valve is provided on the first line.
3. The engine cooling system of claim 2, wherein a filter is disposed on the flowline.
4. The engine cooling system of claim 3, wherein a temperature sensor is further disposed on the drain line, the temperature sensor being located on a side of the filter remote from the oil cooler.
5. Engine cooling system according to any one of claims 1-4, characterized in that an intercooler and a radiator are further provided on the low-temperature circulation line;
the intercooler is located between the oil cooler and the radiator in a flow direction of the coolant.
6. The engine cooling system according to claim 5, characterized by further comprising a second regulating valve connected in parallel to the radiator for regulating the amount of coolant entering the radiator.
7. The engine cooling system according to claim 6, characterized by further comprising a second pipeline having one end connected to the second regulating valve and the other end connected to a low-temperature circulation pipeline between the radiator and a low-temperature water pump.
8. The engine cooling system of claim 7, further comprising a controller connected to the first and second regulating valves, respectively;
the controller is used for adjusting the opening degrees of the first regulating valve and the second regulating valve according to the opening degree of an accelerator pedal of an engine and the rotating speed of the engine.
9. The engine cooling system of claim 8, wherein the controller is connected to a temperature sensor;
the controller is used for receiving the actual temperature detected by the temperature sensor and controlling the opening degrees of the first regulating valve and the second regulating valve according to the actual temperature.
10. An engine comprising a body and an engine cooling system according to any one of claims 1 to 9, the engine cooling system being provided in the body;
the engine body is internally provided with a position sensor and a rotating speed sensor, the position sensor and the rotating speed sensor are respectively connected with the controller, wherein the position sensor is used for detecting the opening degree of an accelerator pedal of the engine, and the rotating speed sensor is used for detecting the rotating speed of the engine.
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| CN202123389071.XU CN216811863U (en) | 2021-12-29 | 2021-12-29 | Engine cooling system and engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123389071.XU CN216811863U (en) | 2021-12-29 | 2021-12-29 | Engine cooling system and engine |
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| CN216811863U true CN216811863U (en) | 2022-06-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324706A (en) * | 2022-10-14 | 2022-11-11 | 潍柴动力股份有限公司 | Engine cooling water circulation system and control method thereof |
| CN115390595A (en) * | 2022-08-22 | 2022-11-25 | 奇瑞汽车股份有限公司 | Lubricating oil temperature adjusting device and engine bench test system |
-
2021
- 2021-12-29 CN CN202123389071.XU patent/CN216811863U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115390595A (en) * | 2022-08-22 | 2022-11-25 | 奇瑞汽车股份有限公司 | Lubricating oil temperature adjusting device and engine bench test system |
| CN115324706A (en) * | 2022-10-14 | 2022-11-11 | 潍柴动力股份有限公司 | Engine cooling water circulation system and control method thereof |
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