CN212671921U - High-efficient thoughtlessly moves engine cooling system - Google Patents
High-efficient thoughtlessly moves engine cooling system Download PDFInfo
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- CN212671921U CN212671921U CN202021473056.6U CN202021473056U CN212671921U CN 212671921 U CN212671921 U CN 212671921U CN 202021473056 U CN202021473056 U CN 202021473056U CN 212671921 U CN212671921 U CN 212671921U
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Abstract
The utility model relates to an automobile engine technical field specifically is a high-efficient thoughtlessly moves engine cooling system, including main electronic water pump, cylinder cap water jacket, cylinder body water jacket, thermoregulator, radiator, booster water jacket, oil cooler and EGR cooler, vice electronic water pump with booster water jacket intercommunication, vice electronic water pump entry intercommunication the cylinder cap water jacket, booster water jacket export intercommunication the entry of EGR cooler. The utility model discloses a two electronic water pumps, electronic water pump do not receive the engine speed restriction, can make the engine keep best operating temperature through automatically controlled tactics adjustment rotational speed and flow, improve system efficiency, improve fuel economy, energy saving and emission reduction.
Description
Technical Field
The utility model relates to an automobile engine technical field specifically is a high-efficient hybrid engine cooling system.
Background
The cooling system is an important component of the engine. During engine operation, the parts in contact with the hot gases or exhaust gases are heated strongly, requiring cooling systems to dissipate the excess heat from these parts, which can have various undesirable consequences, such as: deterioration of the lubricating oil and damage of a normal oil film; the heated parts expand to destroy the normal clearance of the kinematic pair; the part is reduced in thermal mechanical property and even fails, and the like. In addition, the cooling cannot be excessive, otherwise, poor combustion and increased emission can be caused, and the fuel economy is reduced; the viscosity of the engine oil is increased, the friction loss of a kinematic pair is aggravated, the engine works roughly, the power of the engine is reduced, and the service life is shortened.
The water pump is the engine cooling system power source. Generally, the cooling system of the automobile engine is of a water-cooled type, that is, the cooling system takes cooling liquid as a cooling medium, and is a forced closed type circulating water cooling system, and the cooling liquid is forcedly and circularly conveyed to each part of the engine to be cooled through the operation of a water pump. The mechanical centrifugal water pump is driven by a crankshaft pulley through a belt according to a certain speed ratio, and when the engine is started, the engine runs, and when the engine is stopped, the engine stops running.
For example, chinese patent CN 108343500 a discloses a high-efficiency hybrid engine cooling system, which includes a water pump, a cylinder cover water jacket, a cylinder water jacket, a first thermostat, a radiator, an electronic water pump, a supercharger, an expansion tank, an engine oil cooler, a second thermostat, a warm air blower, and an engine degassing pipeline. The main water pump is a mechanical water pump.
As another example, chinese patent CN 207004624U discloses a water-cooled and medium-cooled intake air cooling system for an engine, which includes a radiator, a supercharger, a water pump, and a second electronic water pump, wherein an output end of the water pump is communicated to an input end of the water pump through a pipeline sequentially via the supercharger, the second electronic water pump, the radiator, and an electronic thermostat; the system also comprises an expansion kettle which is respectively communicated to the input end of the intercooling radiator, the input end of the first electronic water pump, the input end of the radiator and the input end of the water pump through pipelines. The main water pump adopted by the device is also a mechanical water pump.
The two technical schemes have certain defects, because the engine is properly cooled, the optimal working temperature of the engine is maintained to obtain the optimal economy, and the mechanical water pump is designed with a certain matching speed ratio and cannot realize variable speed operation, the mechanical water pump is designed according to the worst working condition of a cooling system, and under other rotating speeds and loads, the flow demand of cooling liquid is reduced, the capacity of the water pump is surplus, and the water pump cannot be well matched with the working condition of the engine.
In addition, if the engine is stopped due to uncertain factors, the water pump is immediately stopped, but all parts of the engine cooling system also have waste heat emission, so that a normal oil film is deteriorated, the mechanical performance of the heated part is reduced due to lack of cooling, the damage of parts is accelerated, and particularly, the parts with strong waste heat emission, such as a cylinder cover, a supercharger, an EGR cooler and the like, even the engine cannot normally run.
Under normal conditions, the engine can have idle transition before shutting down, makes the engine cool off gradually, and the mixed engine type does not have idle transition because of the engine frequently opens and stops, gives off because of shutting down the waste heat and lacks effective cooling, leads to the engine reliability to reduce.
SUMMERY OF THE UTILITY MODEL
The method provides a high-efficiency hybrid engine cooling system, wherein the cooling system is not provided with a mechanical water pump, but two electronic water pumps are used, the electronic water pumps are not limited by the rotating speed of the engine, and the rotating speed and the flow can be adjusted through an electric control strategy, so that the engine can keep the optimal working temperature, the system efficiency is improved, the fuel economy is improved, and the energy conservation and emission reduction are realized.
A high-efficiency hybrid engine cooling system comprises a main electronic water pump, a cylinder cover water jacket, a cylinder body water jacket, a temperature regulator, a radiator, a supercharger water jacket, an engine oil cooler and an EGR cooler; the main electronic water pump the cylinder cap water jacket the cylinder body water jacket EGR cooler, thermoregulator with the radiator is first intercommunication formation circulation circuit in proper order, the utility model discloses a from top decurrent cooling method, cooling water flows to the cylinder body water jacket from the cylinder cap water jacket promptly, and the organism is arrived again to the cylinder cap to the coolant liquid flows through earlier, and the cooling effect is good.
And two ends of the engine oil cooler are respectively connected with the outlet of the main electronic water pump and the outlet of the EGR cooler, and a cooling loop of the engine oil cooler and the engine body form a parallel water path.
Two outlets of the thermostat are respectively connected with the radiator and the main electronic water pump; to control the switching of the engine size cycle.
The utility model also comprises an auxiliary electronic water pump which is communicated with the supercharger water jacket, the inlet of the auxiliary electronic water pump is communicated with the cylinder cover water jacket, and the outlet of the supercharger water jacket is communicated with the inlet of the EGR cooler; the EGR cooler and the engine body form a series waterway structure, and the water jacket of the supercharger takes water from the cylinder cover and returns the water to the front of the EGR cooler.
The utility model discloses still include ECU, speed sensor and temperature sensor, temperature sensor sets up in the heat dissipation, speed sensor is used for acquireing engine speed, temperature sensor is used for acquireing the temperature, temperature sensor speed sensor main electronic water pump with vice electronic water pump all with ECU electric connection. An engine control unit ECU is adopted to control a cooling system, the automatic fault diagnosis function is achieved, the heat dissipation requirement of an engine is calculated through an ECU control strategy and is converted into the cooling flow requirement, then the working power and the rotating speed of a water pump are output, and meanwhile closed-loop control is achieved through feedback regulation;
preferably, a flow gap is provided between the impeller and the blade of the auxiliary electric water pump. The cooling liquid flows through the circulation gap between the water pump impeller and the blades of the auxiliary electronic water pump, so that the water jacket of the supercharger can also flow when the auxiliary electronic water pump is not started, and the cooling of the water jacket of the supercharger is ensured.
Preferably, the water temperature sensor is arranged at the central part of the water outlet pipe of the radiator, collects water temperature data of the position and can reflect the working temperature of the engine in real time.
Preferably, the calibrated flow of the main electronic water pump is larger than that of the auxiliary electronic water pump, the auxiliary electronic water pump with a smaller size can be adopted, the waste heat emission is important, but the flow demand is not large, only a cooling system is required to be circulated at a lower flow, the heat emission demand after shutdown can be met, and the cost is reduced,
preferably, the auxiliary electronic water pump and the main electronic water pump are both of variable-speed structures, and the auxiliary electronic water pump and the main electronic water pump are of communication types of CAN, PWM or LIN. Through an ECU control strategy, the heat dissipation requirement of the engine is calculated and converted into a cooling flow requirement, then the working power and the rotating speed of the water pump are output, and meanwhile, closed-loop control is achieved through feedback adjustment.
The utility model discloses use on the engine, explain its cooling method below, in this method, the rotational speed unit is r/min, and the temperature unit is degree centigrade, T1 < T2 < T3, N1 < N2 < N3, N1 < N2, include following step:
s1, detecting whether the rotating speed of the engine is zero by the rotating speed sensor, and acquiring the water temperature T of the engine by the water temperature sensor; if the engine speed is not zero, the process proceeds to step S2; if the engine speed is zero, the routine proceeds to step S3.
S2, the water temperature sensor transmits the water temperature T to the ECU, the engine state is judged after the calculated water temperature T and temperature thresholds T1, T2 and T3, T1 is more than T2 and more than T3; if T < T1, judging the cold start state, and entering S201; if T1 < T2, determining the state is normal, and entering S202; if T is greater than T2, the engine is in an abnormal state, and the process goes to S203;
s201, the ECU sends out a command to control a main electronic water pump of the engine to operate at a low rotating speed N1, the main electronic water pump gradually rises to T1 along with the water temperature T, and the operation returns to S2;
s202, the ECU sends out a command to control a main electronic water pump of the engine to operate at a medium rotating speed N2, the water temperature T gradually rises to T2, and the operation returns to S2;
and S203, the ECU sends out a command to control a main electronic water pump of the engine to operate at a calibrated speed N3, if the temperature continues to rise to T3, the ECU controls the engine to stop oil injection until the water temperature is reduced to T2, and the step returns to the step S2.
S3, detecting that the rotation speed of the engine is zero by the rotation speed sensor, transmitting the water temperature T to the ECU by the water temperature sensor, calculating the residual heat quantity of the engine by the ECU, converting the residual heat quantity into cooling flow, forming a mapping relation between the water temperature T and the rotation speed of the auxiliary electronic water pump, and comparing the water temperature T with temperature thresholds T1, T2 and T3; if T > T2, go to S301; if T1 < T2, entering S302; if T is less than T1, entering S303;
s301, the ECU sends out a command to control the auxiliary electronic water pump to operate according to the calibrated rotating speed n1, the water temperature T is gradually reduced to T2, and the operation returns to S3;
s302, the ECU sends out a command to control the auxiliary electronic water pump to operate at a rotating speed n2, the value of n2 is one half of n1, and the auxiliary electronic water pump returns to S3 as the water temperature T is gradually reduced to T1;
and S303, the ECU sends out an instruction to control the auxiliary electronic water pump to stop working, and the operation returns to the step S1.
Method, satisfied and adopted two main and auxiliary electronic water pumps to carry out radiating demand to the engine, adopted vice electronic water pump to cool off after shutting down, solved and mixed the motor type and because of frequently opening and stop, lead to the problem of system spare part damage with higher speed, solved the problem that leads to the temperature to report to the police under the effect of waste heat when shutting down because of the engine.
Preferably, in step S202, the operating speed N2 of the main electronic water pump is obtained by querying through a preset pulse spectrum table according to the engine speed and the water temperature T, so that the heat dissipation of the water jacket of the supercharger and the EGR cooler can be controlled under all operating conditions, and the water temperature of the engine is ensured to be normal.
Preferably, in the step S201, the value of the rotation speed N1 of the main electronic water pump is one third of the calibrated rotation speed N3 of the main electronic water pump, and a lower rotation speed of the main electronic water pump is adopted at a lower temperature, so that the engine can be quickly warmed up.
The utility model has the advantages that:
1. the utility model discloses main water pump directly uses electronic pump, and electronic pump does not receive the engine speed restriction, can make the engine keep best operating temperature through automatically controlled tactics adjustment rotational speed and flow, improves system efficiency, improves fuel economy, energy saving and emission reduction.
2. The auxiliary electronic water pump is added on the water inlet pipe of the water jacket of the supercharger, when the engine is stopped and the main electronic water pump is powered off and stops working, the auxiliary electronic water pump is powered on and started to run at a lower power and a lower rotating speed, the engine body, the cylinder cover, the supercharger and the EGR cooler can still be effectively cooled, the engine body, the cylinder cover, the supercharger and the EGR cooler cannot be damaged in an accelerated mode due to waste heat, and the running reliability of the engine is kept.
3. When the engine is stopped, waste heat emission is important, but the flow demand is not large, and the cooling system is only required to be circulated at a lower flow rate, so that the wall surface is prevented from being overheated due to the existence of dead zones, and thus the two electronic water pumps, one large electronic water pump and the other small electronic water pump, are matched for use and alternately operate, so that the electronic water pumps operate at higher efficiency, the total operating power of the system is reduced, and energy conservation and emission reduction are realized.
4. The main electronic water pump and the auxiliary electronic water pump are communicated through CAN, PWM or LIN, have a fault automatic diagnosis function and are convenient for users to use, maintain and overhaul.
5. The main electronic water pump and the auxiliary electronic water pump do not need to be connected with the power output end of the engine, are flexible in arrangement, can be arranged on the engine body, and can also be arranged at any suitable position outside the engine and in the engine room and connected through a pipeline.
6. The utility model provides a lead to the problem of system spare part damage with higher speed because of frequently opening and stopping if mix the motor type, avoid customer complaining and complaining, solved the problem that leads to the temperature to report to the police under the effect of waste heat when shutting down because of the engine.
Drawings
Fig. 1 is a schematic block diagram of a cooling system of a high-efficiency hybrid engine according to the present invention, in which large arrows and dotted lines indicate directions of electrical connections.
Fig. 2 is a block diagram of the working state of the cooling system of the high-efficiency hybrid engine according to the present invention in the normal operating state of the engine, in which the black large arrows and the dotted lines indicate the directions of electrical connection, and the black small arrows indicate the flowing directions of the coolant.
Fig. 3 is a block diagram of an operating state of the high-efficiency hybrid engine cooling system according to the present invention in an engine shutdown state, in which black large arrows and dotted lines indicate directions of electrical connection, and black small arrows indicate a flow direction of the coolant.
In the figure: the system comprises a main electronic water pump 1, a cylinder cover water jacket 2, a cylinder body water jacket 3, a thermostat 4, a radiator 5, a supercharger water jacket 6, an engine oil cooler 7, an EGR cooler 8, an auxiliary electronic water pump 9, an ECU10, a water temperature sensor 11 and a rotating speed sensor 12.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1:
as shown in fig. 1, a high-efficiency hybrid engine cooling system comprises a main electronic water pump 1, a cylinder cover water jacket 2, a cylinder body water jacket 3, a temperature regulator 4, a radiator 5, a supercharger water jacket 6, an oil cooler 7 and an EGR cooler 8; the main electronic water pump 1, the cylinder cover water jacket 2, the cylinder body water jacket 3, the EGR cooler 8, the temperature regulator 4 and the radiator 5 are sequentially communicated at the head to form a circulation loop, two ends of the engine oil cooler 7 are respectively connected with an outlet of the main electronic water pump 1 and an outlet of the EGR cooler 8, and two outlets of the temperature regulator 4 are respectively connected with the radiator 5 and the main electronic water pump 1; the auxiliary electronic water pump 9 is communicated with the supercharger water jacket 6, an inlet of the auxiliary electronic water pump 9 is communicated with the cylinder cover water jacket 2, and an outlet of the supercharger water jacket 6 is communicated with an inlet of the EGR cooler 8; still include ECU10, speed sensor 12 and water temperature sensor 11, water temperature sensor 11 sets up in the radiator 5, speed sensor 12 is used for acquireing engine speed, water temperature sensor 11 is used for acquireing the temperature, water temperature sensor 11 speed sensor 12 main electronic water pump 1 with vice electronic water pump 9 all with ECU10 electric connection.
In this embodiment, the cooling system does not have a mechanical water pump, but uses two electronic water pumps, one is a main water pump, and the other is arranged on the water inlet pipeline of the water jacket 6 of the supercharger, or arranged on the water outlet pipeline of the water jacket 6 of the supercharger, and the two water pumps alternately run.
When the engine works, as shown in fig. 2, the main electronic water pump 1 is powered on to operate, the auxiliary electronic water pump 9 is powered off, the main electronic water pump 1 delivers cooling liquid to each part of the system, and the cooling liquid flows through the auxiliary electronic water pump 9.
When the engine is stopped, as shown in fig. 3, the main electronic water pump 1 is powered off, the auxiliary electronic water pump 9 is started to operate at a lower power, so that the cooling liquid is continuously circulated to take away the waste heat of the system, and water flow can flow through gaps between the blades of the impeller of the main electronic water pump 1.
Example 2:
as shown in fig. 1, a high-efficiency hybrid engine cooling system comprises a main electronic water pump 1, a cylinder cover water jacket 2, a cylinder body water jacket 3, a temperature regulator 4, a radiator 5, a supercharger water jacket 6, an oil cooler 7 and an EGR cooler 8; main electronic pump 1 cylinder cap water jacket 2 cylinder body water jacket 3 EGR cooler 8, thermoregulator 4 and radiator 5 is first intercommunication formation circulation circuit in proper order, the utility model discloses a from the decurrent cooling method in top, cooling water flows to cylinder body water jacket 3 from cylinder cap water jacket 2 promptly, and the organism is arrived again to the cylinder cap to the coolant liquid flows through earlier, and the cooling effect is good.
And two ends of the oil cooler 7 are respectively connected with the outlet of the main electronic water pump 1 and the outlet of the EGR cooler 8, and a cooling loop of the oil cooler 7 and the engine body form a parallel water path.
Two outlets of the temperature regulator 4 are respectively connected with the radiator 5 and the main electronic water pump 1; to control the switching of the engine size cycle.
The system further comprises an auxiliary electronic water pump 9, wherein the auxiliary electronic water pump 9 is communicated with the supercharger water jacket 6, an inlet of the auxiliary electronic water pump 9 is communicated with the cylinder cover water jacket 2, and an outlet of the supercharger water jacket 6 is communicated with an inlet of the EGR cooler 8; the EGR cooler 8 and the engine body form a series waterway structure, and the supercharger water jacket 6 takes water from a cylinder cover and returns the water to the front of the EGR cooler 8.
The present embodiment further includes an ECU10, a rotational speed sensor 12, and a water temperature sensor 11, the water temperature sensor 11 being provided in the radiator 5; the ECU10 is a short name of an electric control unit of an automobile engine and is commonly called an engine computer. The electronic control unit is used for controlling the ignition, the oil injection, the air-fuel ratio, the idling, the exhaust gas recirculation and the like of the engine to enable the engine to normally operate by continuously collecting signals from various sensors of the automobile when the engine works. The rotating speed sensor 12 is installed at the engine crankshaft position and used for obtaining the rotating speed of the engine, the water temperature sensor 11 is used for obtaining the water temperature, and the water temperature sensor 11, the rotating speed sensor 12, the main electronic water pump 1 and the auxiliary electronic water pump 9 are electrically connected with the ECU 10. An engine control unit ECU10 is adopted to control a cooling system, the automatic fault diagnosis function is achieved, the heat dissipation requirement of the engine is calculated through an ECU10 control strategy and is converted into the cooling flow requirement, then the working power and the rotating speed of the water pump are output, and meanwhile closed-loop control is achieved through feedback regulation;
and a circulation gap is arranged between the impeller and the blades of the auxiliary electronic water pump 9. The cooling liquid flows through the circulation gap between the water pump impeller and the blades of the auxiliary electronic water pump 9, so that the cooling liquid can flow in the water jacket 6 of the supercharger when the auxiliary electronic water pump 9 is not started, and the cooling of the supercharger is ensured.
The water temperature sensor 11 is arranged at the central part of the water outlet pipe of the radiator 5, collects water temperature data at the position and can reflect the working temperature of the engine in real time.
The calibration flow of the main electronic water pump 1 is larger than that of the auxiliary electronic water pump 9, the auxiliary electronic water pump 9 can be smaller, waste heat dissipation is important, the flow demand is not large, only the cooling system is required to circulate at a lower flow, the heat dissipation demand after shutdown can be met, and meanwhile the cost is reduced.
The auxiliary electronic water pump 9 and the main electronic water pump 1 are both of variable rotating speed structures, and the auxiliary electronic water pump 9 and the main electronic water pump 1 are in communication type of CAN, PWM or LIN. Through ECU10 control strategy, calculate the engine heat dissipation demand, convert into cooling flow demand, then output water pump operating power and rotational speed, realize closed-loop control through feedback adjustment simultaneously.
In this embodiment, the cooling system does not have a mechanical water pump, but uses two electronic water pumps, one is a main water pump, and the other is arranged on the water inlet pipeline of the water jacket 6 of the supercharger, or arranged on the water outlet pipeline of the water jacket 6 of the supercharger, and the two water pumps alternately run.
The two electronic water pump structures in the embodiment comprise a pump shaft, a rotor assembly, a stator assembly and a motor shell, the pump shaft, the rotor assembly, the stator assembly and the motor shell are sequentially sleeved from inside to outside, the impeller is arranged at the end of the pump shaft, an impeller cavity cover flow channel is formed between an impeller cavity cover on the outer side of the impeller and the motor shell, and a motor cavity bottom cover is installed at the bottom of the motor shell.
As shown in fig. 2, when the engine is in operation, the main electronic water pump 1 is powered on, the auxiliary electronic water pump 9 is powered off, the main electronic water pump 1 delivers the coolant to each part of the system, the coolant flows through the gaps between the impeller blades of the auxiliary electronic water pump 9, the oil cooler 7 takes water from the main electronic water pump 1, and the cylinder water jacket 3 takes water from the cylinder head water jacket 2.
As shown in fig. 3, when the engine is stopped, the main electronic water pump 1 is powered off, the auxiliary electronic water pump 9 is started to operate at a lower power, so that the coolant continues to circulate, the waste heat of the system is taken away, water flow can flow through gaps between impeller blades of the main electronic water pump 1, the oil cooler 7 takes water from an outlet of the EGR cooler 8, and the cylinder water jacket 3 takes water from an outlet of the supercharger water jacket 6.
The embodiment is applied to an engine and the working method thereof is as follows, in the embodiment, the rotating speed unit is r/min, the water temperature unit is ℃, T1 < T2 < T3, N1 < N2 < N3, and N1 < N2, the embodiment is applied to a commercial diesel engine, the opening temperature of a thermostat is 83 ℃, the rotating speed range of the engine is recommended to be changed to 600-2300 r/min, the idle speed is 600r/min, the maximum torque point is 1000-1400 r/min, and the calibrated rotating speed is 2300 r/min; the working method comprises the following steps:
s1, detecting whether the engine rotating speed is zero by the rotating speed sensor 12, and acquiring the water temperature T of the engine by the water temperature sensor 11; if the engine speed is not zero, the process proceeds to step S2; if the engine speed is zero, the routine proceeds to step S3.
S2, as shown in FIG. 2, the water temperature sensor 11 transmits the water temperature T to the ECU10, the engine state is judged after the calculated water temperature T and the temperature thresholds T1, T2 and T3, and T1 < T2 < T3; if T < T1, judging the cold start state, and entering S201; if T1 < T2, determining the state is normal, and entering S202; if T is greater than T2, the engine is in an abnormal state, and the process goes to S203;
s201, the ECU10 gives out an instruction to control the main electronic water pump 1 of the engine to operate at a low rotating speed N1, gradually rises to T1 along with the water temperature T, and returns to S2;
s202, the ECU10 gives out an instruction to control the main electronic water pump 1 of the engine to operate at a medium rotating speed N2, gradually rises to T2 along with the water temperature T, and returns to S2;
and S203, the ECU10 gives out a command to control the main electronic water pump 1 of the engine to operate at a nominal rotating speed N3, if the temperature continues to rise to T3, the ECU10 controls the engine to stop oil injection until the water temperature is reduced to T2, and the step returns to the step S2.
S3, as shown in FIG. 3, when the rotation speed sensor 12 detects that the rotation speed of the engine is zero, the water temperature sensor 11 transmits the water temperature T to the ECU10, the ECU10 calculates the residual heat quantity of the engine, converts the residual heat quantity into cooling flow, forms a mapping relation between the water temperature T and the rotation speed of the auxiliary electronic water pump 9, and compares the water temperature T with temperature thresholds T1, T2 and T3; if T > T2, go to S301; if T1 < T2, the process proceeds to S302. If T is less than T1, entering S303;
s301, the ECU10 sends out a command to control the auxiliary electronic water pump 9 to operate according to a calibrated speed n1, the water temperature T is gradually reduced to T2, and the operation returns to S3;
s302, the ECU10 sends out a command to control the auxiliary electronic water pump 9 to operate at a rotating speed n2, the value of n2 is half of that of n1, and the operation returns to S3 as the water temperature T is gradually reduced to T1;
and S303, the ECU10 gives out an instruction to control the auxiliary electric water pump 9 to stop working, and the step returns to the step S1.
In this embodiment, the temperature threshold is: t1 is 83 ℃, T2 is 90 ℃, T3 is 105 ℃,
the main electronic water pump 1 sets the rotating speed: the N1 is 1500r/min, and the flow rate is 60L/min; n3 was 4500r/min, flow rate 300L/min.
The set rotation speed of the auxiliary electronic water pump 9 is: n2 is 2000r/min, and the flow rate is 20L/min; n1 is 4000r/min, and the flow rate is 40L/min.
In step S202 in this embodiment, in step S202, the operating speed N2 of the main electronic water pump 1 is obtained by querying through a preset pulse spectrum table according to the engine speed and the water temperature T, so that the heat dissipation of the supercharger water jacket 6 and the EGR cooler 8 can be controlled under a good full operating condition, and the water temperature of the engine can be guaranteed to be normal.
Obtaining the current rotating speed value and water temperature T of the engine, and obtaining the control parameters in step S202 of the main electronic water pump 1 under the condition that T1 is more than T and less than T2 by checking a preset pulse spectrum table, wherein the numerical values of the rotating speed N2 are as follows:
in this embodiment, in step S201, the value of the rotation speed N1 of the main electronic water pump 1 is one third of the calibrated rotation speed N3 of the main electronic water pump 1, N1 is 1500r/min, the flow rate is 60L/min, and a lower rotation speed of the main electronic water pump 1 is adopted at a lower temperature, so that the engine can be warmed up quickly.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (5)
1. A high-efficiency hybrid engine cooling system comprises a main electronic water pump (1), a cylinder cover water jacket (2), a cylinder body water jacket (3), a temperature regulator (4), a radiator (5), a supercharger water jacket (6), an engine oil cooler (7) and an EGR cooler (8); the main electronic water pump (1), cylinder cover water jacket (2), cylinder body water jacket (3), EGR cooler (8), thermoregulator (4) and radiator (5) are communicated in sequence at first position to form a circulation loop, and the device is characterized in that: two ends of the engine oil cooler (7) are respectively connected with an outlet of the main electronic water pump (1) and an outlet of the EGR cooler (8), and two outlets of the thermostat (4) are respectively connected with the radiator (5) and the main electronic water pump (1); the EGR cooler is characterized by further comprising an auxiliary electronic water pump (9), wherein the auxiliary electronic water pump (9) is communicated with the supercharger water jacket (6), an inlet of the auxiliary electronic water pump (9) is communicated with the cylinder cover water jacket (2), and an outlet of the supercharger water jacket (6) is communicated with an inlet of the EGR cooler (8); still include ECU (10), speed sensor (12) and water temperature sensor (11), water temperature sensor (11) set up in radiator (5), speed sensor (12) are used for acquireing engine speed, water temperature sensor (11) are used for acquireing the temperature, water temperature sensor (11) speed sensor (12) main electronic water pump (1) with vice electronic water pump (9) all with ECU (10) electric connection.
2. The high efficiency hybrid engine cooling system according to claim 1, wherein: and a circulation gap is formed between the impeller and the blade of the auxiliary electronic water pump (9).
3. A high-efficiency hybrid engine cooling system according to claim 1 or 2, characterized in that: the water temperature sensor (11) is arranged at the central part of a water outlet pipe of the radiator (5).
4. A high-efficiency hybrid engine cooling system according to claim 1 or 2, characterized in that: the calibrated flow of the main electronic water pump (1) is larger than that of the auxiliary electronic water pump (9).
5. A high efficiency hybrid engine cooling system as set forth in claim 3, wherein: the auxiliary electronic water pump (9) and the main electronic water pump (1) are both of variable-speed structures, and the auxiliary electronic water pump (9) and the main electronic water pump (1) adopt one communication type of CAN, PWM or LIN.
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| CN202021473056.6U CN212671921U (en) | 2020-07-23 | 2020-07-23 | High-efficient thoughtlessly moves engine cooling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878212A (en) * | 2020-07-23 | 2020-11-03 | 广西玉柴机器股份有限公司 | Efficient hybrid engine cooling system and engine cooling method |
| CN115143007A (en) * | 2021-03-30 | 2022-10-04 | 广州汽车集团股份有限公司 | Temperature control module control method and device and computer storage medium |
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2020
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878212A (en) * | 2020-07-23 | 2020-11-03 | 广西玉柴机器股份有限公司 | Efficient hybrid engine cooling system and engine cooling method |
| CN111878212B (en) * | 2020-07-23 | 2023-10-10 | 广西玉柴机器股份有限公司 | Efficient hybrid engine cooling system and engine cooling method |
| CN115143007A (en) * | 2021-03-30 | 2022-10-04 | 广州汽车集团股份有限公司 | Temperature control module control method and device and computer storage medium |
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