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CN212716842U - Exhaust energy recovery system and vehicle with same - Google Patents

Exhaust energy recovery system and vehicle with same Download PDF

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Publication number
CN212716842U
CN212716842U CN202020760771.1U CN202020760771U CN212716842U CN 212716842 U CN212716842 U CN 212716842U CN 202020760771 U CN202020760771 U CN 202020760771U CN 212716842 U CN212716842 U CN 212716842U
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control valve
recovery system
energy recovery
liquid
temperature sensor
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耿杰
任向飞
杜鸿震
潘桃龙
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Zhejiang Geely Holding Group Co Ltd
Geely Automobile Research Institute Ningbo Co Ltd
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Zhejiang Geely Holding Group Co Ltd
Geely Automobile Research Institute Ningbo Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

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Abstract

排气能量回收系统及具有其的车辆,在该系统中,第一控制阀包括一个进液口及三个出液口,第二控制阀包括两个进液口及一个出液口,发动机冷却回路与第一控制阀的进液口相连,第一控制阀的第一出液口与第二控制阀的第一进液口相连,第一控制阀的第二出液口经过乘员舱采暖回路后与第二控制阀的第二进液口相连,第一控制阀的第三出液口经过变速箱暖机回路后与发动机冷却回路相连,第二控制阀的出液口经过排气热量回收系统后与发动机冷却回路相连,第一温度传感器、第一控制阀及第二控制阀与控制单元电性相连。通过对第一控制阀及第二控制阀的控制,该排气能量回收系统能够较好地对不同阶段回收来的热量进行有效的利用。

Figure 202020760771

An exhaust energy recovery system and a vehicle having the same, in which the first control valve includes one liquid inlet and three liquid outlets, the second control valve includes two liquid inlets and one liquid outlet, and the engine is cooled The circuit is connected to the liquid inlet of the first control valve, the first liquid outlet of the first control valve is connected to the first liquid inlet of the second control valve, and the second liquid outlet of the first control valve passes through the passenger compartment heating circuit It is then connected to the second liquid inlet of the second control valve, the third liquid outlet of the first control valve is connected to the engine cooling circuit after passing through the gearbox warm-up circuit, and the liquid outlet of the second control valve is recovered by exhaust heat. The system is then connected to the engine cooling circuit, and the first temperature sensor, the first control valve and the second control valve are electrically connected to the control unit. By controlling the first control valve and the second control valve, the exhaust energy recovery system can effectively utilize the heat recovered in different stages.

Figure 202020760771

Description

Exhaust energy recovery system and vehicle with same
Technical Field
The utility model belongs to the technical field of the vehicle energy-conservation and specifically relates to an exhaust energy recovery system and have its vehicle.
Background
In the face of increasingly stringent emission and oil consumption regulations, energy conservation and emission reduction become difficulties and directions for the development of the current internal combustion engine. Meanwhile, along with the improvement of the heat efficiency of the engine, the heat which can be used for heating passengers is continuously reduced, and how to use the most economic scheme to improve the comfort of the passengers in winter is also a subject which is explored by manufacturers.
The EHRS (exhaust heat recovery system) technology is applied to vehicles of korean modern, japan toyota, and the like. This technique utilizes the waste heat recovery device of installing on whole car exhaust pipe, with the heat recovery in the exhaust waste heat to engine cooling water, accelerates the warm-up in the cold start stage of car, promotes temperature of water and engine oil temperature fast, reduces the friction work, reaches the effect that economizes on fuel.
However, the arrangement scheme of the existing vehicle type is too simple, and the heat recovered from different stages cannot be utilized most efficiently.
SUMMERY OF THE UTILITY MODEL
The utility model provides an exhaust energy recovery system and have its vehicle, this exhaust energy recovery system can carry out effectual utilization to the heat that different stages were retrieved betterly.
The utility model provides an exhaust energy recovery system, including engine cooling circuit, gearbox warm-up return circuit, exhaust heat recovery system, passenger cabin heating return circuit, first control valve and second control valve, first control valve includes an inlet and three liquid outlet, the second control valve includes two inlets and a liquid outlet, engine cooling circuit's drain pipe with the inlet of first control valve links to each other, the first liquid outlet of first control valve with the first inlet of second control valve links to each other, the second liquid outlet process of first control valve behind the passenger cabin heating return circuit with the second inlet of second control valve links to each other, the third liquid outlet of first control valve behind gearbox warm-up return circuit with the liquid inlet pipeline of engine cooling circuit links to each other, the liquid outlet process of second control valve behind the exhaust heat recovery system with the liquid inlet pipeline of engine cooling return circuit links to each other The exhaust energy recovery system further comprises a first temperature sensor and a control unit, the first temperature sensor, the first control valve and the second control valve are electrically connected with the control unit, the first temperature sensor detects the temperature of cooling liquid in the exhaust energy recovery system and transmits the temperature information to the control unit, and the control unit controls the working positions of the first control valve and the second control valve according to the temperature of the cooling liquid.
Furthermore, the exhaust energy recovery system also comprises a heat dissipation loop and a third control valve, wherein the third control valve comprises two liquid inlets and one liquid outlet, a third liquid outlet of the first control valve is connected with a first liquid inlet of the third control valve, a liquid outlet pipeline of the engine cooling loop is connected with a liquid inlet of the heat dissipation loop through a thermostat, one liquid outlet of the heat dissipation loop is connected with the engine cooling loop, the other liquid outlet of the heat dissipation loop is connected with the second liquid inlet of the third control valve, a liquid outlet of the third control valve is connected with the gearbox warming-up loop, the third control valve is electrically connected with the control unit, the control unit controls the working positions of the first control valve, the second control valve and the third control valve according to the temperature detected by the first temperature sensor.
Further, the first temperature sensor is disposed within the engine cooling circuit.
Furthermore, the exhaust energy recovery system further comprises a heating intention acquisition unit, the heating intention acquisition unit is electrically connected with the control unit, the heating intention acquisition unit acquires heating intentions in a passenger cabin, and the control unit controls the working positions of the first control valve, the second control valve and the third control valve according to information acquired by the heating intention acquisition unit and the first temperature sensor.
Furthermore, the exhaust energy recovery system further comprises a second temperature sensor, the second temperature sensor is electrically connected with the control unit, the second temperature sensor collects the temperature in the gearbox, and the control unit controls the working positions of the first control valve, the second control valve and the third control valve according to the information collected by the first temperature sensor and the second temperature sensor.
Further, the exhaust energy recovery system further comprises a third temperature sensor, the third temperature sensor is arranged between the exhaust heat recovery system and the engine cooling loop and connected with the control unit, and the third temperature sensor detects the temperature of the cooling liquid flowing through the exhaust heat recovery system.
Further, the exhaust energy recovery system further comprises a second pump body, the second pump body is arranged between a liquid outlet pipeline of the engine cooling loop and the first control valve and is electrically connected with the control unit, and the control unit controls the rotating speed of the second pump body according to the temperature detected by the first temperature sensor.
The utility model also provides a vehicle, this vehicle includes foretell exhaust energy recovery system.
In summary, the first control valve, the second control valve, the third control valve and the pipeline connection are arranged, so that the flow path of the cooling liquid can be controlled at different temperatures of the cooling liquid, heating of the passenger compartment and warming and cooling of the transmission can be realized, and the heat recovered at different stages can be effectively utilized.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of an exhaust energy recovery system according to the present embodiment.
FIG. 2 is a system block diagram of the exhaust energy recovery system of FIG. 1.
FIG. 3 is a schematic diagram illustrating coolant flow in the exhaust energy recovery system of FIG. 1 in a first mode.
FIG. 4 is a schematic diagram illustrating coolant flow during a second mode of the exhaust energy recovery system of FIG. 1.
FIG. 5 is a schematic diagram illustrating coolant flow in the exhaust energy recovery system of FIG. 1 in a third mode.
FIG. 6 is a schematic diagram illustrating coolant flow during a fourth mode of the exhaust energy recovery system of FIG. 1.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.
The utility model provides an exhaust energy recovery system and have its vehicle, this exhaust energy recovery system can carry out effectual utilization to the heat that different stages were retrieved betterly.
Fig. 1 is a schematic structural diagram of an exhaust energy recovery system according to the present embodiment, and fig. 2 is a system block diagram of the exhaust energy recovery system in fig. 1. As shown in fig. 1 and 2, an exhaust energy recovery system according to an embodiment of the present invention includes an engine cooling circuit 10, a transmission warming-up circuit 20, an exhaust heat recovery system 30(EHRS), a passenger compartment heating circuit 40, a first control valve 51, and a second control valve 52. The first control valve 51 is a four-way valve and comprises a liquid inlet and three liquid outlets, the second control valve 52 is a three-way valve and comprises two liquid inlets and one liquid outlet, the liquid outlet pipeline 11 of the engine cooling loop 10 is connected with the liquid inlet of the first control valve 51, the first liquid outlet of the first control valve 51 is directly connected with the first liquid inlet of the second control valve 52, the second liquid outlet of the first control valve 51 is connected with the second liquid inlet of the second control valve 52 after passing through the passenger compartment heating loop 40, and the third liquid outlet of the first control valve 51 is connected with the liquid inlet pipeline 12 of the engine cooling loop 10 after passing through the transmission warming loop 20; the outlet of the second control valve 52 passes through the exhaust heat recovery system 30 and into the inlet line 12 of the engine cooling circuit 10. The exhaust energy recovery system further comprises a first temperature sensor 61 and a control unit 70, the first temperature sensor 61, the first control valve 51 and the second control valve 52 are electrically connected with the control unit 70, the first temperature sensor 61 detects the temperature of cooling liquid in the exhaust energy recovery system and transmits the temperature information to the control unit 70, and the control unit 70 controls the working positions of the first control valve 51 and the second control valve 52 according to the temperature of the cooling liquid.
Fig. 3 is a schematic diagram illustrating a structure of a flow of a cooling fluid when the exhaust gas energy recovery system of fig. 1 is in a first mode, fig. 4 is a schematic diagram illustrating a structure of a flow of a cooling fluid when the exhaust gas energy recovery system of fig. 1 is in a second mode, and fig. 5 is a schematic diagram illustrating a structure of a flow of a cooling fluid when the exhaust gas energy recovery system of fig. 1 is in a third mode. As shown in fig. 3 to 5, in the present embodiment, the first pump 81 in the engine cooling circuit 10 moves the cooling fluid in the entire exhaust energy recovery system, and the first temperature sensor 61 may be disposed in the engine cooling circuit 10 to more directly detect the temperature of the cooling fluid in the engine cooling circuit 10. When the engine is in the initial stage of cold start, that is, the temperature of the coolant detected by the first temperature sensor 61 is lower than the first temperature threshold (for example, 30 ℃), the control unit 70 controls the liquid inlet of the first control valve 51 to be communicated with the first liquid outlet (the flow path of the coolant is shown by the black line part in fig. 3), and controls the first liquid inlet of the second control valve 52 to be communicated with the liquid outlet, and the coolant flows out of the engine cooling circuit 10 and then directly enters the exhaust heat recovery system 30 through the first control valve 51 and the second control valve 52. At this time, the temperature of the coolant is low, so that after the coolant directly enters the exhaust heat recovery system 30, the coolant directly absorbs exhaust waste heat, so as to accelerate the engine warming-up process.
When the engine is in the middle stage of cold start, that is, the temperature of the coolant detected by the first temperature sensor 61 is greater than the first temperature threshold, the control unit 70 controls the liquid inlet of the first control valve 51 to be communicated with the second liquid outlet (the flow path of the coolant is shown by the black line part in fig. 4), and controls the second liquid inlet of the second control valve 52 to be communicated with the liquid outlet, at this time, the coolant flows out of the engine cooling circuit 10, enters the passenger compartment heating circuit 40, and then enters the exhaust heat recovery system 30, and the heat in the coolant can heat the passenger compartment.
When the engine is at the end of cold start, that is, the temperature of the coolant detected by the first temperature sensor 61 is greater than the second temperature threshold (e.g. 85 ℃) but less than the third temperature threshold (e.g. 95 ℃), the control unit 70 controls the liquid inlet of the first control valve 51 to communicate with the third liquid outlet (please refer to fig. 5 for the flow path of the coolant), since the second temperature threshold is greater than the first temperature threshold, the liquid inlet of the first control valve 51 may also communicate with the second liquid outlet at this time according to heating needs, and fig. 5 only shows a case where the liquid inlet of the first control valve 51 communicates with the second liquid outlet and the third liquid outlet at the same time, but in this mode, the liquid inlet of the first control valve 51 may also communicate with the third liquid outlet only. When the liquid inlet of the first control valve 51 is communicated with the second liquid outlet and the third liquid outlet, the control unit further controls the second liquid inlet of the second control valve 52 to be communicated with the liquid outlet. The flow of the cooling liquid in the second liquid outlet of the first control valve 51 is the same as that shown in fig. 4, and will not be described again. After the coolant enters the transmission warm-up circuit 20 through the third outlet of the first control valve 51, since the temperature of the coolant is already high, the coolant can heat the transmission and the coolant in the transmission warm-up circuit 20, and then the coolant flows back into the engine cooling circuit 10.
That is, the first control valve 51, the second control valve 52 and the pipe connection are provided to control the path through which the coolant flows at different temperatures of the coolant, thereby achieving both passenger compartment heating and transmission warming-up, and effectively utilizing the heat recovered at different stages.
Further, in order to better control the circulation of the cooling liquid in each stage, the exhaust energy recovery system further includes a heating intention acquisition unit 41 and a second temperature sensor 62, the heating intention acquisition unit 41 and the second temperature sensor 62 are electrically connected to the control unit 70, the heating intention acquisition unit 41 acquires the heating intention in the passenger compartment, the second temperature sensor 62 acquires the temperature in the transmission, and when the temperature acquired by the first temperature sensor 61 is greater than a first temperature threshold and there is a heating intention in the passenger compartment, the control unit 70 communicates the liquid inlet of the first control valve 51 with the second liquid outlet and communicates the second liquid inlet of the second control valve 52 with the liquid outlet; when the temperature collected by the first temperature sensor 61 is greater than the second temperature threshold but less than the third temperature threshold, and the temperature collected by the second temperature sensor 62 is less than the fourth temperature threshold (for example, 60 ℃), that is, when the engine is cold-started and enters the end stage, but the temperature of the transmission is low, the control unit 70 communicates the liquid inlet of the first control valve 51 with the third liquid outlet.
Further, the exhaust energy recovery system further includes a heat dissipation loop 90 and a third control valve 53, the third control valve 53 is electrically connected to the control unit 70, the liquid outlet pipe 11 of the engine cooling loop 10 is connected to a liquid inlet of the heat dissipation loop 90 through a thermostat 91, and the third control valve 53 is a three-way valve including two liquid inlets and one liquid outlet. A third liquid outlet of the first control valve 51 is connected with the transmission warming-up circuit 20 through a first liquid inlet of the third control valve 53, one liquid outlet of the heat dissipation circuit 90 is directly connected with the liquid inlet pipeline 12 of the engine cooling circuit 10, and the other liquid outlet of the heat dissipation circuit 90 is connected with the transmission warming-up circuit 20 through a second liquid inlet of the third control valve 53.
When the temperature collected by the first temperature sensor 61 is greater than the second temperature threshold but less than the third temperature threshold, the control unit 70 communicates the first liquid inlet and the liquid outlet of the third control valve 53, and the coolant sequentially passes through the first control valve 51 and the third control valve 53 and then enters the transmission warming-up loop 20. When the temperature acquired by the first temperature sensor 61 is greater than the third temperature threshold value, that is, at this time, the cold start of the engine is completed, the water temperature is hot, and the engine warm-up and the gearbox warm-up are completed, the control unit 70 controls the liquid inlet of the first control valve 51 to be communicated with the first liquid outlet or the second liquid outlet (fig. 6 only shows the condition that the liquid inlet of the first control valve 51 is communicated with the second liquid outlet), and controls the second liquid inlet of the third control valve 53 to be communicated with the liquid outlet, at this time, the coolant entering the first control valve 51 does not pass through the gearbox warm-up circuit 20 any more, a part of the coolant entering the heat dissipation circuit 90 directly enters the engine cooling circuit 10, and a part of the coolant enters the engine cooling circuit 10 after passing through the gearbox warm-up circuit 20, so as to cool the gearbox.
Further, due to the addition of the first control valve 51, the second control valve 52, the third control valve 53, and the modification of each pipeline, in order to ensure the smooth flowing of the cooling liquid in the pipeline, the exhaust energy recovery system further includes a second pump 82, the second pump 82 is disposed between the liquid outlet pipe 11 of the engine cooling circuit 10 and the first control valve 51 and electrically connected to the control unit 70, and the control unit 70 controls the rotation speed of the second pump 82 according to the temperature detected by the first temperature sensor 61, so as to ensure the smooth flowing of the cooling liquid in the pipeline. If the coolant enters the exhaust heat recovery system 30 directly, the second pump 82 may operate at 50% of the speed of rotation due to the shorter path taken by the coolant; when the coolant flows through the passenger compartment heating circuit 40 and/or the transmission warming-up circuit 20, the coolant flows through a longer path, and the second pump body 82 can operate at full speed; when engine warm-up is complete, the second pump 82 may be deactivated to reduce the flow of coolant within the exhaust heat recovery system 30.
Further, in the present embodiment, the exhaust energy recovery system further includes a third temperature sensor 63, the third temperature sensor 63 is disposed between the exhaust heat recovery system 30 and the engine cooling circuit 10, and is connected to the control unit 70, and the third temperature sensor 63 detects the temperature of the cooling liquid flowing through the exhaust heat recovery system 30 to assist the control unit 70 in controlling the flow path of the cooling liquid in the exhaust energy recovery system and preventing the cooling liquid from "boiling".
As described above, the first control valve 51, the second control valve 52, the third control valve 53 and the pipe connection are provided to control the path through which the coolant flows at different temperatures of the coolant, thereby achieving both the passenger compartment heating and the transmission warming and the transmission cooling, and effectively utilizing the heat recovered at different stages.
The utility model also provides a vehicle, including above-mentioned exhaust energy recovery system, please refer to the prior art for other technical characteristics about this vehicle, no longer describe herein.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent changes without departing from the technical scope of the present invention.

Claims (8)

1. An exhaust gas energy recovery system, characterized by: the passenger compartment heating system comprises an engine cooling loop, a gearbox warming loop, an exhaust heat recovery system, a passenger compartment heating loop, a first control valve and a second control valve, wherein the first control valve comprises a liquid inlet and three liquid outlets, the second control valve comprises two liquid inlets and one liquid outlet, a liquid outlet pipeline of the engine cooling loop is connected with the liquid inlet of the first control valve, the first liquid outlet of the first control valve is connected with the first liquid inlet of the second control valve, the second liquid outlet of the first control valve is connected with the second liquid inlet of the second control valve after passing through the passenger compartment heating loop, the third liquid outlet of the first control valve is connected with a liquid inlet pipeline of the engine cooling loop after passing through the gearbox warming loop, and the liquid outlet of the second control valve is connected with a liquid inlet pipeline of the engine cooling loop after passing through the exhaust heat recovery system, the exhaust energy recovery system further comprises a first temperature sensor and a control unit, the first temperature sensor, a first control valve and a second control valve are electrically connected with the control unit, the first temperature sensor detects the temperature of cooling liquid in the exhaust energy recovery system and transmits temperature information to the control unit, and the control unit controls the working positions of the first control valve and the second control valve according to the temperature of the cooling liquid.
2. The exhaust energy recovery system of claim 1, wherein: the exhaust energy recovery system also comprises a heat dissipation loop and a third control valve, the third control valve comprises two liquid inlets and one liquid outlet, a third liquid outlet of the first control valve is connected with a first liquid inlet of the third control valve, a liquid outlet pipeline of the engine cooling loop is connected with a liquid inlet of the heat dissipation loop through a thermostat, one liquid outlet of the heat dissipation loop is connected with the engine cooling loop, the other liquid outlet of the heat dissipation loop is connected with the second liquid inlet of the third control valve, a liquid outlet of the third control valve is connected with the gearbox warming-up loop, the third control valve is electrically connected with the control unit, the control unit controls the working positions of the first control valve, the second control valve and the third control valve according to the temperature detected by the first temperature sensor.
3. The exhaust energy recovery system of claim 2, wherein: the first temperature sensor is disposed within the engine cooling circuit.
4. The exhaust energy recovery system of claim 3, wherein: the exhaust energy recovery system further comprises a heating intention acquisition unit, the heating intention acquisition unit is electrically connected with the control unit, the heating intention acquisition unit acquires heating intentions in the passenger cabin, and the control unit controls the working positions of the first control valve, the second control valve and the third control valve according to information acquired by the heating intention acquisition unit and the first temperature sensor.
5. The exhaust energy recovery system of claim 3, wherein: the exhaust energy recovery system further comprises a second temperature sensor, the second temperature sensor is electrically connected with the control unit, the second temperature sensor collects the temperature in the gearbox, and the control unit controls the working positions of the first control valve, the second control valve and the third control valve according to information collected by the first temperature sensor and the second temperature sensor.
6. The exhaust energy recovery system of claim 1, wherein: the exhaust energy recovery system further comprises a third temperature sensor, the third temperature sensor is arranged between the exhaust heat recovery system and the engine cooling loop and connected with the control unit, and the third temperature sensor detects the temperature of the cooling liquid flowing through the exhaust heat recovery system.
7. The exhaust energy recovery system of claim 1, wherein: the exhaust energy recovery system further comprises a second pump body, the second pump body is arranged between a liquid outlet pipeline of the engine cooling loop and the first control valve and is electrically connected with the control unit, and the control unit controls the rotating speed of the second pump body according to the temperature detected by the first temperature sensor.
8. A vehicle, characterized in that: the vehicle includes the exhaust energy recovery system according to any one of claims 1 to 7.
CN202020760771.1U 2020-05-09 2020-05-09 Exhaust energy recovery system and vehicle with same Active CN212716842U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114867312A (en) * 2022-05-10 2022-08-05 广东申菱环境系统股份有限公司 Heat recovery type liquid cooling system
CN115217938A (en) * 2021-09-24 2022-10-21 广州汽车集团股份有限公司 A fast heat engine control method of a transmission

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115217938A (en) * 2021-09-24 2022-10-21 广州汽车集团股份有限公司 A fast heat engine control method of a transmission
CN115217938B (en) * 2021-09-24 2024-01-23 广州汽车集团股份有限公司 Quick heat engine control method of transmission
CN114867312A (en) * 2022-05-10 2022-08-05 广东申菱环境系统股份有限公司 Heat recovery type liquid cooling system

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