CN215949639U - Temperature control system and engine cooling system of engine - Google Patents
Temperature control system and engine cooling system of engine Download PDFInfo
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- CN215949639U CN215949639U CN202121869924.7U CN202121869924U CN215949639U CN 215949639 U CN215949639 U CN 215949639U CN 202121869924 U CN202121869924 U CN 202121869924U CN 215949639 U CN215949639 U CN 215949639U
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- 238000001816 cooling Methods 0.000 title claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 306
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 210000000476 body water Anatomy 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 239000000295 fuel oil Substances 0.000 abstract description 4
- 239000001993 wax Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 239000002826 coolant Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
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Abstract
The embodiment of the utility model discloses a temperature control system of an engine and an engine cooling system, wherein the temperature control system comprises: the water temperature control device comprises a control device, a first temperature detection device and an electronic water pump, wherein the first temperature detection device and the electronic water pump are electrically connected with the control device; the control device is arranged to send a first control signal for adjusting the rotating speed of the electronic water pump to the electronic water pump according to the first water temperature signal; the electronic water pump is installed in a water inlet pipeline of the engine and is configured to receive a first control signal and execute rotation speed adjustment. The temperature control system of the engine and the engine cooling system disclosed by the embodiment of the utility model can reduce the power consumption of the electronic water pump, maintain the engine at the optimal working temperature and achieve the effects of reducing the loss of the engine and the consumption rate of fuel oil.
Description
Technical Field
The present invention relates to, but not limited to, the field of automatic control, and more particularly, to a temperature control system of an engine and an engine cooling system.
Background
The current engine cooling system mainly uses a mechanical water pump to provide flow. However, the speed of the mechanical water pump is linearly related to the engine speed, and the mechanical water pump starts to operate as long as the engine is operated. When the engine is cold started at low temperature, the heat emitted by the engine is taken away by the operation of the mechanical water pump, so that the engine cannot be quickly warmed up. When the engine is in low speed and large load and needs large coolant flow, the mechanical water pump can not run at high speed.
SUMMERY OF THE UTILITY MODEL
In a first aspect, an embodiment of the present invention provides a temperature control system of an engine, including a control device, and a first temperature detection device and an electronic water pump electrically connected to the control device, where:
the first temperature detection device is arranged in a water outlet pipeline of the engine and is used for detecting the water outlet temperature of the engine to generate a first water temperature signal;
the control device is set to send a first control signal for adjusting the rotating speed of the electronic water pump to the electronic water pump according to the first water temperature signal;
the electronic water pump is installed in a water inlet pipeline of the engine and is configured to receive the first control signal and execute rotation speed adjustment.
In one example, the system further comprises a second temperature sensing device and a control valve electrically connected to the control device, wherein:
the second temperature detection device is arranged in a water outlet section of the engine cylinder body cooling pipeline and is used for detecting the water outlet temperature of the engine cylinder body to generate a second water temperature signal;
the control device is also set to send a second control signal for adjusting the opening degree of the control valve to the control valve according to the second water temperature signal;
the control valve is installed in a water outlet section of the engine cylinder cooling pipeline and is configured to receive the second control signal and perform opening adjustment.
In one example, the control valve is an electronic ball valve, an inlet end of the electronic ball valve is connected with a water outlet section of the engine cylinder cooling pipeline through a water pipe, and a control end of the electronic ball valve is electrically connected to the control device.
In one example, the second control signal includes an opening signal for controlling a target opening of the electronic ball valve.
In one example, the system further comprises: the first storage device is used for storing the corresponding relation between the opening degree signal and the second water temperature signal and is connected with the control device;
the second water temperature signal is represented by a numerical value or a numerical range, and the target opening degrees of the electronic ball valve indicated by the opening degree signals corresponding to different numerical values or numerical ranges are different;
the opening signal and a second water temperature signal in the corresponding relation of the second water temperature signal are represented by a preset temperature range, the preset temperature range comprises a first temperature range and a second temperature range, the target opening of the electronic ball valve indicated by the opening signal corresponding to the first temperature range is 0, the target opening of the electronic ball valve indicated by the opening signal corresponding to the second temperature range is greater than 0, and any temperature value in the first temperature range is smaller than all temperature values in the second temperature range.
In one example, the system further comprises: the second storage device is used for storing the corresponding relation between the first control signal and the first water temperature signal and is connected with the control device;
the first water temperature signal is represented by a numerical value or a numerical range, and different first control signals correspond to different numerical values or numerical ranges;
the first water temperature signal in the corresponding relation between the first control signal and the first water temperature signal is represented by a preset temperature range, the preset temperature range comprises a third temperature range and a fourth temperature range, the control signal corresponding to the third temperature range is invalid, and the invalid control signal means that the electronic water pump is not started; the control signal corresponding to the fourth temperature range is effective, the effective control signal means that the electronic water pump is started, and any temperature value in the third temperature range is smaller than all temperature values in the fourth temperature range.
In one example, the system further comprises: the third storage device is used for storing the corresponding relation between the first control signal and the rotating speed of the electronic water pump and is connected with the control device;
the first control signal comprises a current value or a voltage value, the current value or the voltage value is represented by a numerical value or a numerical range, and different rotating speeds correspond to different numerical values or numerical ranges.
In a second aspect, an embodiment of the present invention further provides an engine cooling system, including a cooling pipeline, a cooling device, and the temperature control system according to any one of the embodiments of the first aspect, wherein:
the cooling pipeline comprises a water inlet pipeline and a water outlet pipeline of the engine, and an engine cylinder body cooling pipeline and an engine cylinder cover cooling pipeline which are connected in parallel between a water outlet of the water inlet pipeline and a water inlet of the water outlet pipeline, the engine cylinder body cooling pipeline comprises a water inlet section, a cylinder body water jacket and a water outlet section which are connected in sequence, the engine cylinder cover cooling pipeline comprises a water inlet section, a cylinder cover water jacket and a water outlet section which are connected in sequence,
the cooling device comprises a radiator connected between the water inlet of the water inlet pipeline and the water outlet of the water outlet pipeline.
In one example, the engine cooling system further comprises: and the wax type thermostat is connected between the water outlet of the water outlet pipeline and the radiator.
In one example, the engine cooling system further comprises: the warm air core body is arranged on a water outlet pipeline of the engine.
Compared with the prior art, the temperature control system and the engine cooling system of the engine provided by at least one embodiment of the utility model have the following beneficial effects: the rotating speed of the electronic water pump can be adjusted according to the water outlet temperature of the engine, so that the water outlet temperature of the engine reaches the required target temperature, the electronic water pump can be adjusted as required, the power consumption of the electronic water pump is reduced, the effects of reducing the loss of the engine and the consumption rate of fuel oil are achieved, and the problem of high power consumption caused by the fact that the traditional mechanical pump starts to operate only when the engine works is solved.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the example serve to explain the principles of the utility model and not to limit the utility model.
FIG. 1 is a block diagram of a temperature control system for an engine provided in accordance with an exemplary embodiment of the present invention;
FIG. 2 is a schematic structural arrangement diagram of a temperature control system of an engine according to an embodiment of the present invention;
FIG. 3 is a block diagram of a temperature control system for an engine block provided in accordance with an exemplary embodiment of the present invention;
FIG. 4 is a flowchart of a method for implementing engine temperature control based on a temperature control system for an engine provided in an embodiment of the present invention;
fig. 5 is a schematic structural arrangement diagram of an engine cooling system according to an embodiment of the present invention.
Description of reference numerals:
1-a control device; 2-a first temperature detection device; 3-an electronic water pump; 4-a second temperature detection device; 5-a control valve; C1-Total Water Outlet section of Engine; f1-engine block; f2-engine cylinder head; d-an electronic water pump; c2-water outlet section of cylinder cooling pipeline; k-control valve; c3-water outlet section of cylinder cover cooling pipeline; s-a radiator; g-a thermal management module; n-warm air core.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
Fig. 1 is a block diagram illustrating a temperature control system of an engine according to an exemplary embodiment of the present invention, and fig. 2 is a schematic diagram illustrating a structural arrangement of the temperature control system of the engine according to the exemplary embodiment of the present invention, and as shown in fig. 1 and fig. 2, the temperature control system of the engine according to the present embodiment may include: the temperature control device comprises a control device 1, and a first temperature detection device 2 and an electronic water pump 3 which are electrically connected with the control device. Wherein:
the first temperature detection device is installed in a water outlet pipeline of the engine and is used for detecting the water outlet temperature of the engine to generate a first water temperature signal.
In this embodiment, one or more temperature detection devices may be disposed in the water outlet pipeline of the engine (such as at the total water outlet section C1 of the engine) to detect the water outlet temperature of the engine. The first water temperature signal may be a current signal or a voltage signal corresponding to the outlet water temperature of the engine.
As shown in fig. 2, the engine may include an engine block F1 (which may be simply referred to as a cylinder block) and an engine cylinder head F2 (which may be simply referred to as a cylinder head), and when the engine includes the cylinder block and the cylinder head, the total water outlet section of the engine is disposed at a position where the cylinder block and the cylinder head are connected.
The control device is arranged to send a first control signal for adjusting the rotating speed of the electronic water pump to the electronic water pump according to the first water temperature signal; the electronic water pump is installed in a water inlet pipeline of the engine and is configured to receive a first control signal and execute rotation speed adjustment.
In this embodiment, as shown in fig. 2, an electronic water pump D may be disposed in the water inlet pipeline of the engine to replace a conventional mechanical pump, and the rotation speed of the electronic water pump is adjusted by the control device according to the outlet water temperature of the engine, so as to make the outlet water temperature of the engine reach the required target temperature.
In this embodiment, can adjust the electronic pump rotational speed according to the leaving water temperature of engine, realize the regulation as required of electronic pump, reduce the consumption of electronic pump. For example, when the engine is started cold, the electronic water pump is not started, so that the temperature rise of the engine combustion chamber can be accelerated, the friction work of mechanical elements is reduced, and the oil consumption is reduced; when the engine is in thermal operation, the rotating speed of the electronic water pump can be adjusted according to the outlet water temperature of the engine, the outlet water temperature of the engine is maintained at the optimal working temperature, and the efficiency of the engine is improved.
In this embodiment, when the control device sends the first control signal for adjusting the rotation speed of the electronic water pump to the electronic water pump according to the first water temperature signal, the control device may use an existing comparison algorithm, and does not involve improvement of the algorithm. For example, the control device may compare the outlet water temperature of the engine corresponding to the first water temperature signal with a target temperature, and output a control signal according to a difference between the outlet water temperature and the target temperature, so as to start or not start the electronic water pump, or correspondingly increase or decrease the rotation speed of the electronic water pump, so that the outlet water temperature of the engine can be quickly adjusted to the target temperature.
In this embodiment, the target temperature of the engine operation is related to the rotation speed and the torque of the engine, a corresponding relationship between the rotation speed and the target temperature of the engine may be preset, or a corresponding relationship between the rotation speed, the torque and the target temperature of the engine may be set, and the control device may adjust the rotation speed of the electronic water pump according to the corresponding relationship and the water outlet temperature of the engine, so that the water outlet temperature of the engine reaches the required target temperature.
In one example, the temperature control system of the engine may further include: the second storage device is used for storing the corresponding relation between the first control signal and the first water temperature signal and is connected with the control device; the first water temperature signal is represented by a numerical value or a numerical range, and different first control signals correspond to different numerical values or numerical ranges.
In this embodiment, the storage device may store a corresponding relationship between the first water temperature signal and the first control signal in advance, that is, a corresponding relationship between the outlet water temperature of the engine and the first control signal, and the control device may determine the first control signal corresponding to the detected first water temperature signal by searching the corresponding relationship according to the first water temperature signal output by the first temperature detection device.
In one example, a first water temperature signal in the corresponding relation between the first control signal and the first water temperature signal is represented by a preset temperature range, the preset temperature range includes a third temperature range and a fourth temperature range, the control signal corresponding to the third temperature range is invalid, and the invalid control signal means that the electronic water pump is not started; the control signal corresponding to the fourth temperature range is effective, the effective control signal means that the electronic water pump is started, and any temperature value in the third temperature range is smaller than all temperature values in the fourth temperature range.
In the embodiment, when the engine is started in a cold machine, namely the water outlet temperature of the engine is in the third temperature range, the electronic water pump is not started, and the engine does not run, so that the rapid temperature rise of the engine is realized, and the fuel consumption rate is reduced. When the engine is in heat engine operation, namely the outlet water temperature of the engine is in the fourth temperature range, the electronic water pump is started, the rotating speed of the electronic water pump can be adjusted according to the outlet water temperature of the engine, the outlet water temperature of the engine is maintained at the optimal working temperature (namely the target temperature), and the efficiency of the engine is improved.
For example, the maximum temperature value in the third temperature range is a preset low temperature T _ min, and the maximum temperature value in the fourth temperature range is a target temperature T _ EN-target, where T _ min < T _ EN-target. When the water outlet temperature T _ EN of the engine is less than T _ min, the electronic water pump is not started, and the engine does not run. When the water outlet temperature T _ EN of the engine is larger than T _ min and T _ EN is smaller than T _ EN-target, the water pump starts to operate at the minimum rotating speed. And when the water outlet temperature T _ EN of the engine is greater than T _ EN-target, increasing the rotating speed of the electronic water pump to maintain the water outlet temperature of the engine at the target temperature.
In one example, the temperature control system of the engine may further include: the third storage device is used for storing the corresponding relation between the first control signal and the rotating speed of the electronic water pump and is connected with the control device; the first control signal comprises a current value or a voltage value, the current value or the voltage value is represented by a numerical value or a numerical range, and different rotating speeds correspond to different numerical values or numerical ranges.
In this embodiment, the rotation of the electronic water pump can be controlled by the current value or the voltage value, the current value or the voltage value is different, and the corresponding rotation speed of the electronic water pump is different.
The temperature control system of the engine provided by the embodiment of the utility model can adjust the rotating speed of the electronic water pump according to the water outlet temperature of the engine, so that the water outlet temperature of the engine reaches the required target temperature, the electronic water pump can be adjusted as required, the power consumption of the electronic water pump is reduced, the effects of reducing the loss of the engine and the consumption rate of fuel oil are achieved, and the problem of high power consumption caused by the fact that the traditional mechanical pump starts to operate only when the engine works is solved.
In an example embodiment of the present invention, fig. 3 is a block diagram of a temperature control system of an engine block according to an example embodiment of the present invention, and as shown in fig. 2 and 3, the temperature control system of an engine may further include: a second temperature detection device 4 and a control valve 5 electrically connected to the control device, wherein:
the second temperature detection device is arranged in a water outlet section of the engine cylinder body cooling pipeline and is used for detecting the water outlet temperature of the engine cylinder body to generate a second water temperature signal.
In this embodiment, as shown in fig. 2, one or more temperature detection devices may be disposed in the water outlet section of the engine block cooling circuit (e.g., at the water outlet section C2 of the block cooling circuit) to detect the outlet water temperature of the engine block. The second water temperature signal may be a current signal or a voltage signal corresponding to the outlet water temperature of the engine cylinder.
The control device can also be set to send a second control signal for adjusting the opening degree of the control valve to the control valve according to the second water temperature signal; the control valve is installed in a water outlet section of the engine cylinder cooling pipeline and is configured to receive the second control signal and perform opening adjustment.
Wherein the opening degree of the control valve is used to indicate an opening area of the control valve, and the opening degree of the control valve may include: the opening angle of the valve is controlled. The principle of the control device outputting the second control signal according to the second water temperature signal is similar to the principle of outputting the first control signal according to the first water temperature signal, and this embodiment is not limited and described herein.
In this embodiment, as shown in fig. 2, a control valve K may be disposed in the water outlet section of the engine cylinder cooling pipeline, and the control device adjusts the opening of the control valve according to the water outlet temperature of the engine cylinder to control the water outlet flow rate of the engine cylinder cooling pipeline, so as to control the water outlet temperature of the engine cylinder, thereby implementing the control of the water outlet temperature of the engine cylinder.
The embodiment can control the opening degree of the control valve in the water outlet section of the engine cylinder cooling pipeline, and control the water outlet temperature of the engine cylinder at the target temperature required by the cylinder, so that the effects of reducing the power consumption of the electronic water pump and maintaining the optimal temperature of the engine are achieved.
In addition, in this embodiment, the rotation speed of the electronic water pump may be adjusted to individually control the outlet water temperature of the engine, and the opening of the control valve may be adjusted to individually control the outlet water temperature of the engine cylinder, that is, the electronic water pump and the control valve individually control the outlet water temperature of the engine cylinder and the outlet water temperature of the engine (or the engine cylinder cover), so as to implement on-demand cooling of the outlet water temperature of the engine cylinder and the outlet water temperature of the engine (or the engine cylinder cover), achieve the minimum power consumption and the fuel consumption of the engine, and implement the requirements of rapid temperature rise of the engine and maintaining the optimal temperature of the engine.
The water outlet temperature of the engine is the temperature of the total water outlet section C1 of the engine cooling pipeline, the water outlet temperature of the engine cylinder block is the temperature of the water outlet section C2 of the engine cylinder block cooling pipeline, and the water outlet temperature of the engine cylinder head is the temperature of the water outlet section C3 of the engine cylinder head cooling pipeline. When the control valve is fully closed, the outlet water temperature of the engine is the outlet water temperature of the cylinder cover of the engine. When the control valve is not fully closed, the outlet water temperature of the engine is the superposition of the outlet water temperature of the engine cylinder cover and the outlet water temperature of the engine cylinder body.
In one example, when the outlet water temperature of the engine (or the engine cylinder cover) and the outlet water temperature of the engine cylinder body are respectively adjusted through the electronic pump and the control valve, the target temperature of the outlet water temperature of the engine cylinder body can be adjusted to be lower than the target temperature of the outlet water temperature of the engine (or the engine cylinder cover).
In this embodiment, in the engine operation process, the cylinder cover bears a large thermal load, and the cylinder body bears a small thermal load, so as to achieve the minimum power loss and stability of the engine, in this embodiment, the outlet water temperature of the cylinder body can be adjusted to be slightly lower than the outlet water temperature of the cylinder cover, and therefore the coolant temperature of the cylinder cover needs to be lower than the coolant temperature of the cylinder body. In the embodiment, the water outlet temperature of the engine (or the engine cylinder cover) is controlled by the electronic water pump, and the water outlet temperature of the engine cylinder body is controlled by the electronic ball valve, so that the engine cylinder body and the cylinder cover are maintained at different target temperatures, and the engine cylinder body and the cylinder cover are cooled as required.
In one example, when the engine is started in a cold machine, the control device can respectively close the electronic water pump and the control valve through the first control signal and the second control signal, cooling liquid in the engine does not flow, rapid temperature rise of the engine is achieved, and the consumption rate of fuel oil is reduced.
According to the temperature control system of the engine, provided by the embodiment of the utility model, the outlet water temperature of the engine cylinder body can be controlled at the target temperature required by the cylinder body by controlling the opening of the control valve in the outlet water section of the cooling pipeline of the engine cylinder body, so that the effects of reducing the power consumption of the electronic water pump and maintaining the optimal temperature of the engine are achieved. In addition, the rotating speed of the electronic water pump can be adjusted to independently control the water outlet temperature of the engine, the opening degree of the control valve can be adjusted to independently control the water outlet temperature of the engine cylinder body, the cooling of the water outlet temperature of the engine cylinder body and the engine (or the engine cylinder cover) as required is realized, the lowest power consumption and the fuel consumption rate of the engine are achieved, and the requirements of quick temperature rise of the engine and maintenance of the optimal temperature of the engine are met.
In an exemplary embodiment of the present invention, the control valve may be an electronic ball valve, an inlet end of the electronic ball valve is connected to the water outlet section of the engine block cooling pipeline through a water pipe, and a control end of the electronic ball valve is electrically connected to the control device.
In this embodiment, the control device can control the opening of the electronic ball valve according to the outlet water temperature of the engine cylinder, and control the outlet water temperature of the engine cylinder at the required target temperature, so as to achieve the effects of reducing the power consumption of the electronic water pump and maintaining the optimal temperature of the engine. The implementation principle of the electronic ball valve is the same as that of the prior art, and the embodiment is not limited and described herein.
In one example, the second control signal may include an opening signal for controlling a target opening of the electronic ball valve.
In this embodiment, the control device may output a corresponding opening signal according to the outlet water temperature of the engine cylinder, so as to control the target opening of the electronic ball valve.
In one example, the temperature control system of the engine may further include: the first storage device is used for storing the corresponding relation between the opening degree signal and the second water temperature signal and is connected with the control device; the second water temperature signal is represented by a numerical value or a numerical range, and the target opening degrees of the electronic ball valve indicated by the opening degree signals corresponding to different numerical values or numerical ranges are different.
In this embodiment, the storage device may store a corresponding relationship between the second water temperature signal and the opening degree signal in advance, that is, a corresponding relationship between the outlet water temperature of the engine cylinder and the opening degree signal, and the control device may determine the opening degree signal corresponding to the detected second water temperature signal by searching the corresponding relationship according to the second water temperature signal output by the second temperature detection device.
The second water temperature signal in the corresponding relation between the opening degree signal and the second water temperature signal is represented by a preset temperature range and comprises a first temperature range and a second temperature range, the target opening degree of the electronic ball valve indicated by the opening degree signal corresponding to the first temperature range is 0, the target opening degree of the electronic ball valve indicated by the opening degree signal corresponding to the second temperature range is greater than 0, and any temperature value in the first temperature range is smaller than all temperature values in the second temperature range.
In this embodiment, when the outlet water temperature of the engine cylinder is low, for example, in the first temperature range, the target opening of the electronic ball valve is controlled to be 0, that is, the electronic ball valve is fully closed. When the outlet water temperature of the engine cylinder body reaches the set temperature, for example, within the second temperature range, the target opening of the electronic ball valve is controlled to be larger than 0, namely, the electronic ball valve is opened, and the opening of the electronic ball valve is adjusted according to the outlet water temperature of the engine cylinder body.
For example, the maximum value of the first temperature range is less than the target temperature T _ B-target of the engine block, and the minimum value of the second temperature range is greater than or equal to the target temperature T _ B-target of the engine block. After the engine is started, when the water outlet temperature T _ B of the engine cylinder body is less than T _ B-target, the electronic ball valve is controlled to be fully closed. And when the outlet water temperature T _ B of the engine cylinder body is greater than T _ B-target, controlling the opening of the electronic ball valve, and controlling the opening of the electronic ball valve according to the outlet water temperature of the engine cylinder body.
The temperature control system of the engine provided by the embodiment of the utility model can control the opening of the electronic ball valve according to the outlet water temperature of the engine cylinder body, and control the outlet water temperature of the engine cylinder body to be the required target temperature, thereby achieving the effects of reducing the power consumption of the electronic water pump and maintaining the optimal temperature of the engine.
Fig. 4 is a flowchart of a method for implementing engine temperature control based on the engine temperature control system provided in the embodiment of the present invention, as shown in fig. 4, the method may specifically include:
s401: an engine speed is determined.
S402: an engine torque is determined.
The execution sequence of S401 and S402 is not divided into front and back, and they can be executed separately or simultaneously.
S403: and determining the target temperature T _ EN-target of the engine outlet water according to the engine speed and the torque.
S404: and monitoring the water outlet temperature T _ EN of the engine.
S405: and judging whether T _ EN is less than T _ min. If yes, go to step S406; otherwise, S407 is executed.
S406: and S404 is executed when the electronic water pump does not operate.
S407: and judging whether T _ EN is less than T _ EN-target. If yes, executing S409; if not, go to step S408.
S408: and increasing the rotation speed of the electronic water pump and executing S412.
S409: and judging whether the rotating speed n of the electronic water pump is greater than 0. If yes, go to S410; otherwise, S411 is executed.
S410: and reducing the rotation speed of the electronic water pump and executing S412.
S411: the electronic water pump runs at the minimum rotating speed.
S412: the electronic water pump operates at a rotational speed n.
In this embodiment, the target temperature required for the leaving water temperature of the engine may be determined in advance based on the rotation of the engine and the torque of the engine. And after the engine is started, monitoring the water outlet temperature T _ EN of the engine in real time, and when the actually measured water outlet temperature T _ EN of the engine is less than T _ min, the electronic water pump does not run. When the water outlet temperature T _ EN of the engine is larger than T _ min and T _ EN is smaller than the target value T _ EN-target, the water pump starts to operate at the minimum rotating speed. And when the outlet water temperature T _ EN of the engine is larger than the target value T _ EN-target, the rotating speed of the electronic water pump is increased, so that the outlet water temperature of the engine is maintained at the target temperature.
An embodiment of the present invention further provides an engine cooling system, fig. 5 is a schematic structural arrangement diagram of the engine cooling system provided in the embodiment of the present invention, and as shown in fig. 5, the engine cooling system provided in the embodiment of the present invention may include: cooling circuit, cooling apparatus and temperature control system as shown in any one of the embodiments above, wherein:
the cooling pipeline can comprise a water inlet pipeline and a water outlet pipeline of the engine, and an engine cylinder body cooling pipeline and an engine cylinder cover cooling pipeline which are connected in parallel between a water outlet of the water inlet pipeline and a water inlet of the water outlet pipeline, the engine cylinder body cooling pipeline can comprise a water inlet section, a cylinder body water jacket and a water outlet section which are connected in sequence, and the engine cylinder cover cooling pipeline can comprise a water inlet section, a cylinder cover water jacket and a water outlet section which are connected in sequence;
the cooling device may comprise a radiator S connected between the inlet of the inlet line and the outlet of the outlet line.
The engine cooling system provided by the embodiment can realize the control of the outlet water temperature of the engine through the temperature control system provided by any one of the embodiments, the realization principle and the realization effect are similar, and the details are not repeated here.
In one example, the engine cooling system may further include: and the wax type thermostat T is connected between the water outlet of the water outlet pipeline and the radiator.
In this embodiment, a wax thermostat may be disposed between the water outlet of the water outlet pipeline and the heat sink, and the wax thermostat may be used as a control switch of the heat sink. When the outlet water temperature of the engine is lower than the set temperature value, the refined paraffin in the temperature sensing body of the wax type thermostat is in a solid state, and a channel between the total outlet water section of the engine and the radiator is closed; when the outlet water temperature of the engine is larger than or equal to the set temperature value, the refined paraffin in the temperature sensing body of the wax type thermostat begins to melt and gradually becomes liquid, and a channel between the total outlet water section of the engine and the radiator is opened.
In one example, the control valve and the wax thermostat may be referred to as a thermal management module G.
In this embodiment, a wax thermostat may be disposed between the water outlet of the water outlet pipeline and the radiator, and the wax thermostat may automatically adjust the amount of water entering the radiator according to the temperature of the outlet water of the engine, so as to adjust the heat dissipation capability of the cooling system and ensure that the engine operates within a proper temperature range.
In one example, the engine cooling system may further include: the warm air core body N is arranged on a water outlet pipeline of the engine.
In this embodiment, a warm air core may be disposed on the water outlet pipeline of the engine, and heat of the engine coolant is introduced into the warm air core to provide warm air.
In an example, engine cooling system can be applied to the automotive filed, introduces the heat of engine coolant liquid into the warm braw core, can provide the warm braw to the driver's cabin through the warm braw core, improves user experience.
In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "mouth" structure ", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the structures referred to have specific orientations, are configured and operated in specific orientations, and thus, are not to be construed as limiting the present invention.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, or may be connected through two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (10)
1. The temperature control system of the engine is characterized by comprising a control device, a first temperature detection device and an electronic water pump, wherein the first temperature detection device and the electronic water pump are electrically connected with the control device, and the temperature control system comprises:
the first temperature detection device is arranged in a water outlet pipeline of the engine and is used for detecting the water outlet temperature of the engine to generate a first water temperature signal;
the control device is set to send a first control signal for adjusting the rotating speed of the electronic water pump to the electronic water pump according to the first water temperature signal;
the electronic water pump is installed in a water inlet pipeline of the engine and is configured to receive the first control signal and execute rotation speed adjustment.
2. The system of claim 1, further comprising a second temperature sensing device and a control valve electrically connected to the control device, wherein:
the second temperature detection device is arranged in a water outlet section of the engine cylinder body cooling pipeline and is used for detecting the water outlet temperature of the engine cylinder body to generate a second water temperature signal;
the control device is also set to send a second control signal for adjusting the opening degree of the control valve to the control valve according to the second water temperature signal;
the control valve is installed in a water outlet section of the engine cylinder cooling pipeline and is configured to receive the second control signal and perform opening adjustment.
3. The system of claim 2, wherein the control valve is an electronic ball valve, an inlet end of the electronic ball valve is connected with a water outlet section of the engine block cooling pipeline through a water pipe, and a control end of the electronic ball valve is electrically connected to the control device.
4. The system of claim 3, wherein the second control signal comprises an opening signal for controlling a target opening of the electronic ball valve.
5. The system of claim 4, further comprising: the first storage device is used for storing the corresponding relation between the opening degree signal and the second water temperature signal and is connected with the control device;
the second water temperature signal is represented by a numerical value or a numerical range, and the target opening degrees of the electronic ball valve indicated by the opening degree signals corresponding to different numerical values or numerical ranges are different;
the opening signal and a second water temperature signal in the corresponding relation of the second water temperature signal are represented by a preset temperature range, the preset temperature range comprises a first temperature range and a second temperature range, the target opening of the electronic ball valve indicated by the opening signal corresponding to the first temperature range is 0, the target opening of the electronic ball valve indicated by the opening signal corresponding to the second temperature range is greater than 0, and any temperature value in the first temperature range is smaller than all temperature values in the second temperature range.
6. The system of claim 1, further comprising: the second storage device is used for storing the corresponding relation between the first control signal and the first water temperature signal and is connected with the control device;
the first water temperature signal is represented by a numerical value or a numerical range, and different first control signals correspond to different numerical values or numerical ranges;
the first water temperature signal in the corresponding relation between the first control signal and the first water temperature signal is represented by a preset temperature range, the preset temperature range comprises a third temperature range and a fourth temperature range, the control signal corresponding to the third temperature range is invalid, and the invalid control signal means that the electronic water pump is not started; the control signal corresponding to the fourth temperature range is effective, the effective control signal means that the electronic water pump is started, and any temperature value in the third temperature range is smaller than all temperature values in the fourth temperature range.
7. The system of claim 1, further comprising: the third storage device is used for storing the corresponding relation between the first control signal and the rotating speed of the electronic water pump and is connected with the control device;
the first control signal comprises a current value or a voltage value, the current value or the voltage value is represented by a numerical value or a numerical range, and different rotating speeds correspond to different numerical values or numerical ranges.
8. An engine cooling system comprising a cooling circuit, a cooling device, and a temperature control system according to any one of claims 1 to 7, wherein:
the cooling pipeline comprises a water inlet pipeline and a water outlet pipeline of the engine, and an engine cylinder body cooling pipeline and an engine cylinder cover cooling pipeline which are connected in parallel between a water outlet of the water inlet pipeline and a water inlet of the water outlet pipeline, the engine cylinder body cooling pipeline comprises a water inlet section, a cylinder body water jacket and a water outlet section which are connected in sequence, the engine cylinder cover cooling pipeline comprises a water inlet section, a cylinder cover water jacket and a water outlet section which are connected in sequence,
the cooling device comprises a radiator connected between the water inlet of the water inlet pipeline and the water outlet of the water outlet pipeline.
9. The system of claim 8, wherein the engine cooling system further comprises: and the wax type thermostat is connected between the water outlet of the water outlet pipeline and the radiator.
10. The system of claim 8, wherein the engine cooling system further comprises: the warm air core body is arranged on a water outlet pipeline of the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121869924.7U CN215949639U (en) | 2021-08-11 | 2021-08-11 | Temperature control system and engine cooling system of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121869924.7U CN215949639U (en) | 2021-08-11 | 2021-08-11 | Temperature control system and engine cooling system of engine |
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| Publication Number | Publication Date |
|---|---|
| CN215949639U true CN215949639U (en) | 2022-03-04 |
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| CN202121869924.7U Active CN215949639U (en) | 2021-08-11 | 2021-08-11 | Temperature control system and engine cooling system of engine |
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| Country | Link |
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| CN (1) | CN215949639U (en) |
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2021
- 2021-08-11 CN CN202121869924.7U patent/CN215949639U/en active Active
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