CN-224214255-U - Commercial car thermal management system

Abstract

The utility model discloses a heat management system of a commercial vehicle, which comprises an electric control unit and a cooling loop. The cooling loop comprises an engine, a hydraulic retarder, a thermal management valve, a radiator, an electronic water pump and an electronic fan arranged on the side part of the radiator, and the thermal management valve, the hydraulic retarder, the electronic water pump and the electronic fan are respectively and electrically connected with the electronic control unit. The cooling loop adjusting unit and the temperature detecting unit are respectively and electrically connected with the electric control unit. The electric control unit controls the adjustment of the cooling circuit according to the working state of the hydraulic retarder. The temperature detection unit is used for detecting the temperature of cooling liquid in the engine and the temperature of cooling liquid in the hydraulic retarder, and transmitting corresponding temperature signals to the electric control unit, and the electric control unit controls the switch of the heat management valve, the electronic water pump and the electronic fan according to the temperature signals. The engine and the hydraulic retarder share a set of cooling loop, and the flow of cooling liquid in the system is adjusted according to the water temperature of the whole system, so that the whole vehicle has good heat dissipation, and the thermal efficiency of the whole vehicle is optimized.

Inventors

• WANG LIFENG
• WANG HAOTIAN
• ZHAO ZHIMIN
• WANG XINJIANG
• Cui Genbo
• LI MINGKAI
• WANG PENGSHUN
• MA JUN
• XU JICHAO
• LI YITAO

Assignees

• 潍坊力创电子科技有限公司

Dates

Publication Date

20260508

Application Date

20250619

Claims (8)

1. 1. A thermal management system for a commercial vehicle, comprising an electronic control unit and a cooling circuit; The cooling loop comprises an engine, a hydraulic retarder, a thermal management valve, a radiator, an electronic water pump and an electronic fan arranged on the side part of the radiator, wherein the thermal management valve, the hydraulic retarder, the electronic water pump and the electronic fan are respectively and electrically connected with the electronic control unit; The commercial vehicle heat management system further comprises a cooling loop adjusting unit and a temperature detecting unit, wherein the cooling loop adjusting unit and the temperature detecting unit are respectively and electrically connected with the electric control unit; the electric control unit controls the adjustment of the cooling loop according to the working state of the hydraulic retarder; the temperature detection unit is used for detecting the temperature of cooling liquid in the engine and the temperature of cooling liquid in the hydrodynamic retarder and transmitting corresponding temperature signals to the electric control unit, and the electric control unit controls the heat management valve, the electronic water pump and the electronic fan to be switched on and off according to the temperature signals.
2. 2. The commercial vehicle thermal management system of claim 1, wherein an electric three-way valve is further provided on the cooling circuit, an outlet of the electric three-way valve is in communication with a waste heat recovery unit, and the waste heat recovery unit is further in communication with the radiator.
3. 3. The commercial vehicle thermal management system of claim 2, wherein the electric three-way valve is disposed between the thermal management valve and the radiator, an inlet of the electric three-way valve is in communication with the thermal management valve, and another outlet of the electric three-way valve is in communication with the radiator.
4. 4. A commercial vehicle heat management system according to claim 3, wherein the temperature detection unit comprises a coolant temperature sensor a for detecting the temperature of the coolant at the engine outlet and a coolant temperature sensor B for detecting the temperature of the coolant in the hydraulic retarder, the electric control unit controlling the heat management valve in accordance with the coolant temperature.
5. 5. The commercial vehicle thermal management system of claim 4, wherein the electronic control unit comprises an engine ECU and a multi-system cooperative controller, the engine ECU being electrically connected to the multi-system cooperative controller.
6. 6. The commercial vehicle thermal management system of claim 5, wherein the electronic control unit further comprises a hydrodynamic retarder RCU electrically connected to the multi-system cooperative controller.
7. 7. The commercial vehicle thermal management system of claim 6, wherein the thermal management valve comprises a self-resetting actuator electrically connected to the engine ECU.
8. 8. The commercial vehicle thermal management system of claim 7, wherein the thermal management valve further comprises a valve body disposed in the cooling circuit.

Description

Commercial car thermal management system Technical Field The utility model belongs to the technical field of engines, and particularly relates to a heat management system of a commercial vehicle. Background When transportation enterprises and truck drivers pay more attention to cargo loading and transportation timeliness, the power of the heavy truck engine is continuously improved. However, the problem is that the truck service brake is in overload operation, the friction brake can not meet the braking requirement under all working conditions, and in extreme cases, the friction brake is even completely disabled, so that great hidden danger is brought to the running safety of the vehicle. The hydraulic retarder is used as an auxiliary braking system, plays a key role in the braking working condition of a commercial vehicle, and particularly has direct influence on the performance and reliability under severe working conditions such as high load, emergency braking, long-slope braking and the like. In the prior art, the temperature of the cooling liquid is controlled mainly through a fixed heat dissipation system or a manual adjusting device, and the defects of slow response, poor adaptability, large water temperature fluctuation and the like exist in the mode, so that the heat management efficiency of the whole vehicle is low, the service life and the working performance of the hydraulic retarder are further influenced, and the heat efficiency of an engine is reduced. Disclosure of Invention The technical problem to be solved by the utility model is to provide the heat management system for the commercial vehicle, so that the engine and the hydraulic retarder share a set of cooling loop, and the flow of cooling liquid in the system is regulated according to the water temperature of the whole system, so that the whole vehicle has good heat dissipation, and the heat efficiency of the whole vehicle is optimized. In order to solve the technical problems, the technical scheme of the utility model is as follows: The commercial vehicle thermal management system is characterized by comprising an electric control unit and a cooling loop, wherein the cooling loop comprises an engine, a hydraulic retarder, a thermal management valve, a radiator, an electronic water pump and an electronic fan arranged on the side of the radiator, the thermal management valve, the hydraulic retarder, the electronic water pump and the electronic fan are respectively and electrically connected with the electric control unit, the commercial vehicle thermal management system further comprises a cooling loop adjusting unit and a temperature detecting unit, the cooling loop adjusting unit and the temperature detecting unit are respectively and electrically connected with the electric control unit, the electric control unit is used for controlling the adjustment of the cooling loop according to the working state of the hydraulic retarder, and the temperature detecting unit is used for detecting the temperature of cooling liquid in the engine and the temperature of cooling liquid in the hydraulic retarder and transmitting corresponding temperature signals to the electric control unit, and the electric control unit is used for controlling the switching of the thermal management valve, the electronic water pump and the electronic fan according to the temperature signals. Further, an electric three-way valve is further arranged on the cooling adjusting circuit, one outlet of the electric three-way valve is communicated with the waste heat recovery unit, and the waste heat recovery unit is also communicated with the radiator. Further, the electric three-way valve is arranged between the heat management valve and the radiator, an inlet of the electric three-way valve is communicated with the heat management valve, and the other outlet of the electric three-way valve is communicated with the radiator. Further, the temperature detection unit comprises a cooling liquid temperature sensor A and a cooling liquid temperature sensor B, wherein the cooling liquid temperature sensor A is used for detecting the temperature of cooling liquid at an outlet of the engine, the cooling liquid temperature sensor B is used for detecting the temperature of cooling liquid in the hydraulic retarder, and the electric control unit controls the thermal management valve according to the cooling liquid temperature. Further, the electronic control unit comprises an engine ECU and a multi-system cooperative controller, and the engine ECU is electrically connected with the multi-system cooperative controller. Further, the electric control unit further comprises a hydraulic retarder RCU, and the hydraulic retarder RCU is electrically connected with the multi-system cooperative controller. Further, the thermal management valve includes a self-resetting actuator electrically connected to the engine ECU. Further, the thermal management valve further comprises a valve body disposed i