Thermal management assembly capable of independently controlling large circulation and small circulation
By independently controlling the thermal management components of the large and small cycles, the problem of engine temperature instability is solved, rapid engine warm-up and efficient operation are achieved, fuel consumption and pollutant emissions are reduced, and the service life of engine components is extended.
Patent Information
- Application Number
- CN202422854539.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-22
AI Technical Summary
In the existing technology, the target control logic thermal management component causes the engine to heat up slowly, the engine to operate at too high or too low an operating temperature, low fuel efficiency, increased engine pollutant emissions, and the early start of the small cycle leads to prolonged warm-up time and wear of internal engine components.
The thermal management components with independent control of large and small cycles include a large cycle inlet, an actuator and a small cycle inlet, and are equipped with a flow regulation main valve, a temperature sensing component, a return spring, a pressure relief spring and a small cycle closing component. Through precise flow control and automatic adjustment, the heat exchange effect is optimized to ensure that the engine operates within the appropriate temperature range.
It achieves precise control of engine temperature, shortens warm-up time, reduces fuel consumption, extends engine component life, reduces pollutant emissions, and improves fuel efficiency and system stability.
Smart Images
Figure CN223330642U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile engine cooling accessories, and in particular relates to a thermal management component with independent control of large and small cycles. Background Art
[0002] The EA888 third-generation thermal management module is a target logic active control mode. As a core component of the internal combustion engine cooling system, it not only ensures the normal operation of the internal combustion engine, but also has a significant impact on the fuel economy, emissions and other performance of the internal combustion engine. Its development is highly valued by the automotive industry.
[0003] The thermal management module, operating in target logic active control mode, automatically adjusts the small-circuit cooling system and the amount of water entering the radiator based on real-time feedback from the cooling system's water temperature. This changes the water's circulation range to adjust the cooling system's heat dissipation capacity and ensure the engine operates within the appropriate temperature range, ultimately achieving energy savings and emissions reductions. Regulation of the large- and small-circuit cooling systems relies on an actuator, N493. The N493 rotary valve assembly utilizes two mechanically connected rotary slide valves to control and regulate coolant flow. Upon detecting that a system component has reached a set temperature, the engine control unit outputs a control signal based on the control requirements, driving the rotary valve assembly to the appropriate open or close position, shortening engine warm-up time and maintaining the engine at the appropriate operating temperature.
[0004] As regulations gradually reduce permitted emission rates, reducing total harmful emissions from internal combustion engines is a top design consideration. When operating at temperatures outside the design temperature range, engines release harmful emissions at high levels. Therefore, to ensure engine operation within the correct temperature range, stabilizing coolant and engine temperatures contributes to efficient fuel combustion and reduced harmful emissions. Therefore, stabilizing engine temperature is crucial for design studies that reduce harmful emissions.
[0005] During engine use, the target control logic thermal management component will actively adjust the water flow of the radiator to adapt to changes in engine operating conditions, resulting in a mismatch between the adjusted heat dissipation flow and the actual needs of the engine cooling system, which will cause the engine to overcool and increase engine fuel consumption. At the same time, overcooling or overheating of the engine will seriously affect the service life of related engine components, reduce fuel efficiency, and increase engine pollutant emissions.
[0006] The rapid heating of the engine is also achieved through the thermal management control of the engine's small cycle through the target control logic. When the target control logic does not match the actual temperature of the small cycle, it will cause the small cycle to start prematurely, prolong the warm-up time, accelerate the wear of the engine's internal components, and increase the engine's fuel consumption.
[0007] In summary, due to inherent problems with the target control logic thermal management components currently used on the market, the engine heats up slowly and operates at temperatures that are too high or too low. At this time, fuel efficiency is low and engine pollutant emissions increase. Utility Model Content
[0008] The purpose of the utility model is to provide a thermal management component with independent control of large and small cycles, which has the function of independent control of thermal management of large and small cycles, and solves the problems of early opening of the small cycle in the prior art, prolonged warm-up time, accelerated wear of internal engine components, increased engine fuel consumption, slow engine heating, engine operation at too high or too low operating temperature, low fuel efficiency, and increased engine pollutant emissions.
[0009] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is that the utility model provides a thermal management component with independent control of large and small cycles, including a large cycle inlet, an actuator and a small cycle inlet, the large cycle inlet and the small cycle inlet are respectively connected to the actuator, a flow regulating main valve is provided at the large cycle inlet, a temperature sensing component is provided in the flow regulating main valve, a return spring is surrounded by the outside of the actuator, a small cycle closing component is provided in the small cycle inlet, the small cycle closing component is connected to a pressure relief spring, and a spring correction component is provided on the pressure relief spring.
[0010] Preferably, the actuator is an N493 rotary valve.
[0011] Preferably, the temperature sensing component is a thermistor.
[0012] Preferably, the large circulation inlet is connected to the radiator, and the small circulation inlet is connected to the engine.
[0013] Preferably, the small circulation closing component is a solenoid valve.
[0014] Preferably, a flow sensor is provided between the flow regulating main valve and the actuator.
[0015] Preferably, it further comprises a control unit, which interlocks the flow regulating main valve, the actuator and the small circulation closing component.
[0016] Compared with the prior art, the advantages and positive effects of the present invention are:
[0017] 1. This utility model optimizes the heat exchange effect of the system through precise flow control and automatic adjustment, effectively balances the loads of different circulation systems, can cope with complex usage environments, and meet various thermal management requirements;
[0018] 2. The utility model has the function of independent control of thermal management of large and small cycles, which solves the problems of early opening of the small cycle in the existing technology, prolonged warm-up time, accelerated wear of internal engine parts, increased engine fuel consumption, slow engine heating, engine operation at too high or too low operating temperature, low fuel efficiency, and increased engine pollutant emissions. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0020] Figure 1 An overall diagram of a thermal management component for independent control of large and small cycles;
[0021] Figure 2 A thermal management component that independently controls large and small cycles;
[0022] In the above figures, A, large circulation inlet, B, small circulation inlet, 1, flow control main valve, 2, temperature sensing component, 3, return spring, 4, spring correction component, 5, pressure relief spring, 6, small circulation closing component. DETAILED DESCRIPTION
[0023] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.
[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0025] Example 1, as Figure 1-2 As shown, a thermal management component for independent control of large and small cycles includes a large cycle inlet A, an actuator and a small cycle inlet B, and the large cycle inlet A and the small cycle inlet B are respectively connected to the actuator.
[0026] A flow regulating main valve 1 is provided at the large circulation inlet A. The flow regulating main valve 1 is used to control the size of the coolant flow. The flow is changed by adjusting the valve position to ensure that the coolant is distributed reasonably. Accurate flow regulation can ensure the balance of coolant flow, avoid excessive or insufficient flow, improve heat exchange efficiency, and maintain the optimal operating temperature of the engine.
[0027] A temperature sensing component 2 is provided in the flow regulating main valve 1. The temperature sensing component 2 monitors the coolant temperature in real time and can provide real-time temperature feedback to ensure that the engine is always within the appropriate operating temperature range, thereby improving fuel economy and reducing harmful gas emissions.
[0028] A return spring 3 is provided around the outside of the actuator. The return spring 3 is used to restore the flow regulating main valve 1 to its initial state to ensure system stability and sensitive responsiveness. It can quickly return to the preset state to avoid excessively high or low engine temperature due to control failure.
[0029] A small circulation closing component 6 is provided in the small circulation inlet B. The small circulation closing component 6 is used to close the water flow when the small circulation is not needed to avoid overcooling the engine and ensure that the engine temperature is not too low. By precisely controlling the opening and closing, ineffective heat dissipation is avoided and energy waste is reduced.
[0030] The small-circuit closing component 6 is connected to a pressure relief spring 5, which relieves excessive pressure, preventing overpressure in the cooling system and engine damage, thereby extending the service life of the engine and thermal management system. A spring correction component 4 is attached to the pressure relief spring 5 to adjust its tension and ensure precise response. This fine-tuning can correct errors caused by pressure fluctuations.
[0031] The following is a detailed description of the design of the above key components:
[0032] The actuator is an N493 rotary valve. This actuator regulates flow and controls flow distribution through the operation of the rotary valve, directly affecting the temperature control of the small and large loops. The use of the N493 rotary valve provides high-precision flow control, ensuring system flexibility and responsiveness.
[0033] The temperature sensing component 2 is a thermistor, which is a sensor that measures temperature by utilizing the property that the resistance value of a semiconductor material changes with temperature. Its main function is to measure temperature. By measuring the change in its resistance value, the corresponding temperature change can be inferred.
[0034] The large circulation inlet A is connected to the radiator, and the small circulation inlet B is connected to the engine. The large circulation inlet A is responsible for introducing the coolant into the large circulation part of the cooling system, connected to the radiator, and controlling the flow rate through the flow regulating main valve 1. The large circulation inlet A can accurately control the flow of the coolant by working in conjunction with the flow regulating main valve 1, optimize the cooling effect, and ensure that the engine operates within the appropriate temperature range. The small circulation inlet B is responsible for introducing the coolant into the small circulation part and is connected to the engine. By adjusting the coolant flow, it is ensured that the engine quickly reaches the predetermined operating temperature. The cooperation between the small circulation inlet B and the actuator helps to regulate the engine temperature, shorten the preheating time, avoid the engine temperature being too high or too low, improve fuel efficiency and reduce engine wear.
[0035] The small-circulation closing component 6 is a solenoid valve. The solenoid valve can be opened or closed quickly to achieve fine control of the coolant flow rate. It is more sensitive and responsive than traditional mechanical control, which is conducive to quickly adjusting the engine temperature.
[0036] A flow sensor is provided between the flow regulating main valve 1 and the actuator. The flow sensor is installed between the flow regulating main valve 1 and the actuator to accurately measure the coolant flow rate and perform more precise regulation.
[0037] The system also includes a control unit that interlocks the flow control main valve 1, the actuator, and the small-circuit closing component 6. The control unit receives information such as the temperature signal from the temperature sensing component 2 and the airflow rate information from the flow sensor. Based on preset parameters and algorithms, it issues instructions to drive the actuator, control the flow control main valve 1 and the small-circuit closing component 6, and achieve precise control of the cooling system.
[0038] Function:
[0039] (1) Passive temperature control: This system responds to changes in the coolant or other components' temperature without requiring external control signals. Typically, a temperature sensor triggers the opening or closing of the flow control main valve 1 based on temperature changes. Based on the actual needs of the cooling system, the actuator automatically adjusts the flow rates of the large and small loops to ensure the engine always operates within the ideal temperature range.
[0040] It can adjust according to actual temperature changes without external intervention. By precisely adjusting the flow rate, it avoids excessive coolant flow, reduces energy consumption, improves system efficiency, avoids starting the cooling system too early or too late, ensures that the engine temperature is maintained within the appropriate range, and reduces the impact of temperature fluctuations on engine life.
[0041] (2) Self-correcting pressure relief adjustment: The normally closed component of the small loop will remain closed when the system is in the initial state. The small loop will not be opened until the engine temperature reaches the preset range. The pressure relief spring 5 adjusts according to the pressure changes of the system. If the system pressure is too high, it will release some pressure to prevent system damage. At the same time, the spring force is adjusted by the self-correcting mechanism to ensure that the small loop can quickly heat up when the temperature is too low, avoiding the engine from being in a low temperature state for a long time. The combination of the small loop closing component 6 and the pressure relief spring 5 ensures that the engine can quickly reach the ideal temperature while maintaining the stability of the system.
[0042] This rapidly increases the temperature of the small-circuit engine, shortening engine warm-up time, reducing engine wear, and saving fuel. The self-correcting function of the pressure relief spring 5 automatically adjusts pressure based on system requirements, preventing malfunctions caused by excessive or insufficient pressure and improving system safety and reliability. By more precisely controlling the small-circuit engine temperature, the engine can operate more efficiently, reducing fuel consumption and improving combustion efficiency.
[0043] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. It will not be described in detail here. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.
[0044] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.
Claims
1. A thermal management component with independent control of large and small cycles, comprising a large cycle inlet, an actuator and a small cycle inlet, wherein the large cycle inlet and the small cycle inlet are respectively connected to the actuator, characterized in that: A flow regulating main valve is provided at the large circulation inlet, a temperature sensing component is provided inside the flow regulating main valve, a return spring is surrounded on the outside of the actuator, a small circulation closing component is provided in the small circulation inlet, the small circulation closing component is connected to a pressure relief spring, and a spring correction component is provided on the pressure relief spring.
2. A thermal management component with independent control of large and small cycles according to claim 1, characterized in that: The actuator is an N493 rotary valve.
3. The thermal management component with independent control of large and small cycles according to claim 1, characterized in that: The temperature sensing component is a thermistor.
4. The thermal management component with independent control of large and small cycles according to claim 1, characterized in that: The large circulation inlet is connected to the radiator, and the small circulation inlet is connected to the engine.
5. The thermal management component with independent control of large and small cycles according to claim 1, characterized in that: The small circulation closing component is a solenoid valve.
6. The thermal management component with independent control of large and small cycles according to claim 1, characterized in that: A flow sensor is provided between the flow regulating main valve and the actuator.
7. The thermal management component with independent control of large and small cycles according to claim 1, characterized in that: It also includes a control unit, which interlocks the flow regulation main valve, the actuator and the small cycle closing component.