Temperature zoned control method and system for automotive engines

Abstract

The application discloses a temperature partition control method and system for an automobile engine and relates to the field of engine performance adjustment. The method comprises the following steps: setting corresponding cooling parameters and duty cycles of corresponding components according to engine speed and torque; when it is monitored that the actual cooling water temperature flowing through any cooling water temperature regulating component is higher than the target cooling water temperature after being adjusted by a thermostat, the duty cycle of the any cooling water temperature regulating component is increased; and when it is monitored that the actual cooling water temperature flowing through any cooling water temperature regulating component is lower than the target cooling water temperature after being adjusted by a thermostat, the duty cycle of the any cooling water temperature regulating component is decreased. In different working conditions, the water temperature can be controlled in partitions through the comprehensive control of various cooling water temperature regulating components, so that the temperature of the engine is flexibly adjusted, resources can be reasonably utilized, energy consumption is reduced, excessive cooling is avoided, and the performance of the automobile is improved.

Description

Technical Field

[0001] This invention relates to the field of engine performance regulation, and more specifically to a method and system for temperature zone control of an automobile engine. Background Technology

[0002] The car engine is the power conversion system of a vehicle, and its operating temperature determines its performance. Currently, the cooling system of medium and heavy-duty engines generally includes a radiator, an electronically controlled silicone oil fan, a wax thermostat, a mechanical water pump, an oil pump, mechanical piston cooling nozzles, and an engine cooler. The cooling system's workflow is as follows: the mechanical water pump and oil pump control the flow of coolant and oil respectively; when the wax thermostat detects a low coolant temperature, coolant flows within the engine to perform a "small circulation" for cooling; when the wax thermostat detects a high coolant temperature, it controls the coolant flow through the radiator to perform a "large circulation" for cooling; the electronically controlled silicone oil fan dissipates heat from the radiator (removing heat from the coolant in the radiator). The mechanical piston cooling nozzles cool the pistons, and the engine cooler facilitates heat exchange between the coolant and oil.

[0003] It can be concluded that the existing cooling system continuously cools the engine as it operates, which can be considered a "mechanical one-button" cooling method. That is, all components of the cooling system work when the engine is running, and the cooling system stops when the engine stops. The problems arising from this are: cooling continues even when it is not needed. Taking the mechanical water pump and mechanical piston cooling nozzles as examples, the water pump speed is only proportional to the engine speed (gear connection). Under certain operating conditions, such as high speed and low load, the water flow is too large, causing over-cooling of the engine and consuming additional auxiliary power. The mechanical piston cooling nozzles also cool the piston when the piston temperature is not high, which actually lowers the combustion chamber temperature, which is detrimental to combustion, fuel economy, and emissions.

[0004] Therefore, it can be seen that the existing cooling system not only causes excessive engine cooling when it is working, but also consumes too much energy, thereby reducing the performance of the car. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the technical problem solved by this invention is: how to adjust the engine temperature by dynamically changing the duty cycle of the cooling system, thereby cooling the car engine when needed, and thus achieving the effects of rationally utilizing resources, reducing energy consumption, and improving car performance.

[0006] To achieve the above objectives, the present invention provides a temperature zoning control method for an automotive engine. This method is based on the engine's cooling system, which includes a coolant temperature regulating component, an oil temperature regulating component, and a piston temperature regulating component. The coolant temperature regulating component includes a radiator fan, a water pump, and a thermostat; the oil temperature regulating component includes an oil pump and an oil thermostat; and the piston temperature regulating component includes a piston cooling nozzle control valve and an oil pump. The method includes the following steps: setting corresponding cooling parameters and duty cycles of corresponding components based on engine speed and engine torque; the cooling parameters include a target cooling temperature, the corresponding component being the coolant temperature regulating component; when it is detected that the actual coolant temperature flowing through any coolant temperature regulating component after thermostat adjustment is above the target coolant temperature, increasing the duty cycle of that component; and when it is detected that the actual coolant temperature flowing through any coolant temperature regulating component after thermostat adjustment is below the target coolant temperature, decreasing the duty cycle of that component.

[0007] Based on the above technical solution, the process of increasing the duty cycle of any cooling water temperature regulating component includes: increasing the duty cycle of the water pump; when the duty cycle of the water pump reaches its maximum and the actual cooling water temperature is still above the target cooling water temperature, increasing the duty cycle of the cooling fan; the process of decreasing the duty cycle of any cooling water temperature regulating component includes: decreasing the duty cycle of the cooling fan; when the duty cycle of the cooling fan reaches its minimum and the actual cooling water temperature is still below the target cooling water temperature, decreasing the duty cycle of the water pump.

[0008] Based on the above technical solution, the cooling parameter also includes the target oil temperature, and the corresponding component is the oil temperature regulating component; the method also includes the following steps: when the actual oil temperature flowing through any oil temperature regulating component is detected to be above the target oil temperature, the duty cycle of any oil temperature regulating component is increased; when the actual oil temperature flowing through any oil temperature regulating component is detected to be below the target oil temperature, the duty cycle of any oil temperature regulating component is decreased.

[0009] Based on the above technical solution, the cooling parameter also includes the target piston temperature, and the corresponding component is the piston temperature regulating component; the method also includes the following steps: when the actual piston temperature is detected to be above the target piston temperature, the duty cycle of any piston temperature regulating component is increased; when the actual piston temperature is detected to be below the target piston temperature, the duty cycle of any piston temperature regulating component is decreased.

[0010] Based on the above technical solution, the process of setting the corresponding cooling parameters and the duty cycle of the corresponding components according to the engine speed and engine torque includes: setting the corresponding cooling parameters under different engine speeds and engine torques, determining the test parameters corresponding to each cooling parameter; and determining the duty cycle of the corresponding components according to the cooling parameters and their corresponding test parameters.

[0011] The present invention provides a temperature zone control system for an automobile engine, including a temperature setting parameter module and a zone temperature control module;

[0012] The temperature control parameter setting module is used to: set the corresponding cooling parameters and duty cycles of the corresponding components according to the engine speed and engine torque; the cooling parameters include the target cooling temperature, and the corresponding component is the coolant temperature control component;

[0013] The zone temperature control module is used to: increase the duty cycle of any cooling water temperature control component when the actual cooling water temperature flowing through any cooling water temperature control component after adjustment by the thermostat is above the target cooling water temperature; and decrease the duty cycle of any cooling water temperature control component when the actual cooling water temperature flowing through any cooling water temperature control component after adjustment by the thermostat is below the target cooling water temperature.

[0014] Based on the above technical solution, the process of the zone temperature control module increasing the duty cycle of any cooling water temperature control component includes: increasing the duty cycle of the water pump; when the duty cycle of the water pump reaches its maximum and the actual cooling water temperature is still above the target cooling water temperature, increasing the duty cycle of the cooling fan; the process of the zone temperature control module decreasing the duty cycle of any cooling water temperature control component includes: decreasing the duty cycle of the cooling fan; when the duty cycle of the cooling fan reaches its minimum and the actual cooling water temperature is still below the target cooling water temperature, decreasing the duty cycle of the water pump.

[0015] Based on the above technical solution, the cooling parameters also include the target oil temperature, the corresponding component of which is the oil temperature regulating component; the zone temperature regulating module is also used to: increase the duty cycle of any oil temperature regulating component when the actual oil temperature flowing through any oil temperature regulating component is detected to be above the target oil temperature; and decrease the duty cycle of any oil temperature regulating component when the actual oil temperature flowing through any oil temperature regulating component is detected to be below the target oil temperature.

[0016] Based on the above technical solution, the cooling parameters also include the target piston temperature, the corresponding component of which is the piston temperature regulating component; the zone temperature regulating module is also used to: increase the duty cycle of any piston temperature regulating component when the actual piston temperature is detected to be above the target piston temperature; and decrease the duty cycle of any piston temperature regulating component when the actual piston temperature is detected to be below the target piston temperature.

[0017] Based on the above technical solution, the system also includes a cooling water temperature regulating component, an engine oil temperature regulating component, and a piston temperature regulating component; the cooling water temperature regulating component includes an electronic cooling fan, an electronic water pump, and an electronic thermostat; the engine oil temperature regulating component includes an electronic oil pump and an electronic oil thermostat; and the piston temperature regulating component includes an electronic piston cooling nozzle control valve and an electronic oil pump.

[0018] Compared with the prior art, the advantages of the present invention are as follows:

[0019] This invention can dynamically adjust the duty cycle of the coolant temperature control components based on the difference between the actual coolant temperature and the target coolant temperature (reducing the duty cycle when the water temperature is too low and increasing the duty cycle when the water temperature is too high). This design enables "zoned control of water temperature" (i.e., coordinated adjustment is performed when the temperature is detected to be incorrect) under different operating conditions through the comprehensive control of various coolant temperature control components. This allows for flexible adjustment of the engine temperature, which not only makes rational use of resources and reduces energy consumption, but also avoids the overcooling situation found in existing technologies, thereby improving the performance of the vehicle.

[0020] Furthermore, this invention can flexibly adjust the engine temperature (coolant temperature, oil temperature, piston temperature) by controlling each component in the cooling system in separate zones, thereby optimizing the control of engine temperature / heat load, improving fuel economy (by increasing oil temperature and reducing engine friction) and emissions (by controlling piston temperature and improving combustion), and enhancing engine reliability (by optimizing the control of heat load). The flexible temperature control can also better adapt to different application scenarios and is suitable for widespread application. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic flowchart of a temperature zone control method for an automobile engine in an embodiment of the present invention. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily include all content and operations / steps, nor does it necessarily have to be performed in the order described. For example, some operations / steps can be broken down, combined, or partially merged, so the actual execution order may change depending on the actual situation.

[0025] First, let's introduce the cooling system of a car engine.

[0026] The cooling system includes a coolant temperature control component, an oil temperature control component, and a piston temperature control component; the coolant temperature control component includes a radiator fan, a water pump, and a thermostat; the oil temperature control component includes an oil pump and an oil thermostat; and the piston temperature control component includes a piston cooling nozzle control valve and an oil pump reused in the oil temperature control component.

[0027] Based on this, see Figure 1 As shown, the temperature zone control method for an automobile engine in this embodiment of the invention includes the following steps: setting corresponding cooling parameters and duty cycles of corresponding components according to engine speed and engine torque; the cooling parameters include a target cooling temperature, and the corresponding component is a coolant temperature regulating component.

[0028] When the actual cooling water temperature flowing through any cooling water temperature regulating component is detected to be above the target cooling water temperature after adjustment by the thermostat, it indicates that the cooling water temperature is too high. In this case, the duty cycle of any cooling water temperature regulating component needs to be increased (i.e., the working time of the component needs to be increased) to enhance the cooling capacity and thus reduce the cooling water temperature. When the actual cooling water temperature flowing through any cooling water temperature regulating component is detected to be lower than the target cooling water temperature after adjustment by the thermostat (the process of the thermostat adjusting the cooling water to go through large and small circulation is existing technology), it indicates that the cooling water temperature is too low (i.e., overcooling). In this case, the duty cycle of any cooling water temperature regulating component needs to be decreased to weaken the cooling capacity and thus increase the cooling water temperature.

[0029] Therefore, this invention can dynamically adjust the duty cycle of the coolant temperature control component based on the difference between the actual coolant temperature and the target coolant temperature (reducing the duty cycle when the water temperature is too low and increasing the duty cycle when the water temperature is too high). This design enables "zoned control of water temperature" (i.e., coordinated adjustment is performed when the temperature is detected to be incorrect) under different operating conditions through the comprehensive control of various coolant temperature control components. This allows for flexible adjustment of the engine temperature, which not only makes reasonable use of resources and reduces energy consumption, but also avoids the overcooling situation in the prior art, thereby improving the performance of the vehicle.

[0030] The operating conditions of the cooling water temperature control component at different target cooling water temperatures are as follows:

[0031] The higher the target coolant temperature, the lower the fan speed, meaning the weaker the required cooling capacity; the lower the target coolant temperature, the higher the fan speed, meaning the stronger the required cooling capacity.

[0032] The higher the target cooling water temperature of the water pump, the lower the speed, meaning the weaker the required cooling capacity and the lower the cooling water flow rate; the lower the target cooling water temperature, the higher the speed, meaning the stronger the required cooling capacity and the higher the cooling water flow rate.

[0033] The higher the target coolant temperature of the thermostat, the smaller the opening, meaning the weaker the required cooling capacity. In this case, more coolant flows through the small circulation loop of the engine cooling system. Conversely, the lower the target coolant temperature, the larger the opening, meaning the stronger the required cooling capacity. In this case, more coolant flows through the large circulation loop of the engine cooling system.

[0034] Based on this, the process of increasing the duty cycle of any cooling water temperature regulating component in the above method includes: increasing the duty cycle of the water pump to increase the flow rate of the cooling water and thus improve the cooling capacity; when the duty cycle of the water pump reaches its maximum and the actual cooling water temperature is still above the target cooling water temperature, increasing the duty cycle of the cooling fan to increase the fan speed and thus further improve the cooling capacity.

[0035] The process of reducing the duty cycle of any cooling water temperature control component in the above method includes: reducing the duty cycle of the cooling fan to reduce the cooling capacity; when the duty cycle of the cooling fan reaches its minimum and the actual cooling water temperature is still lower than the target cooling water temperature, reducing the duty cycle of the water pump.

[0036] The principle behind this design is to gradually increase the cooling capacity starting with low-power components (the water pump consumes less power than the fan) and gradually decrease the cooling capacity starting with high-power components (the water pump consumes less power than the fan), thereby further optimizing resource utilization and reducing energy consumption.

[0037] The following example illustrates how the present invention achieves zoned control of engine coolant temperature through the integrated control of a water pump, thermostat, and radiator fan.

[0038] As shown in Table 1, the actual coolant temperature difference between the present invention and the existing solution at the same target coolant temperature is compared under engine speed (1100-1500) rpm and engine torque (0-2000) Nm. Table 1 shows that, under engine speed (1100-1500) rpm and engine torque (0-2000) Nm, the present invention reduces the target coolant temperature of the water pump (increasing coolant flow rate, increasing cooling capacity), reduces the target coolant temperature of the thermostat (increasing thermostat opening, increasing large circulating water flow rate, increasing cooling capacity), and reduces the target coolant temperature of the radiator fan (increasing fan speed, increasing cooling capacity). Furthermore, the coolant temperature reduction is significant (the difference is large in Table 1), confirming the cooling capability of the present invention.

[0039] Table 1. Actual cooling water temperature difference between the present invention and prior art

[0040]

[0041] Preferably, the cooling parameter in this method also includes a target oil temperature, the corresponding component of which is an oil temperature regulating component. The method further includes the following steps: when the actual oil temperature flowing through any oil temperature regulating component is detected to be above the target oil temperature, it indicates that the oil temperature is too high, and in this case, the duty cycle of any oil temperature regulating component needs to be increased to lower the oil temperature. When the actual oil temperature flowing through any oil temperature regulating component is detected to be below the target oil temperature, it indicates that the oil temperature is too low, and in this case, the duty cycle of any oil temperature regulating component needs to be decreased to increase the oil temperature.

[0042] Specifically, when it is necessary to increase the oil temperature in a certain area, first reduce the duty cycle of the oil pump to reduce the oil flow rate (under the premise of constant heat radiation, the lower the oil flow rate, the higher the oil temperature); then reduce the duty cycle of the oil thermostat (the oil thermostat is assembled with the engine cooler, and by adjusting the duty cycle of the oil thermostat, the oil flow rate in the engine cooler can be controlled. The smaller the duty cycle, the smaller the oil flow rate in the engine cooler), thereby reducing the oil flow rate in the engine cooler, reducing the heat exchange between the oil and the coolant, and thus increasing the oil temperature.

[0043] When it is necessary to lower the oil temperature in a certain area, the adjustment logic is the same as that for increasing the oil temperature, and will not be elaborated here.

[0044] Preferably, the cooling parameter in this method also includes a target piston temperature, the corresponding component of which is a piston temperature regulating component; the method further includes the following steps: when the actual piston temperature is detected to be above the target piston temperature, it indicates that the piston temperature is too high, and at this time, it is necessary to increase the duty cycle of any piston temperature regulating component to reduce the piston temperature. When the actual piston temperature is detected to be below the target piston temperature, it indicates that the piston temperature is too low, and at this time, it is necessary to decrease the duty cycle of any piston temperature regulating component to increase the piston temperature.

[0045] Specifically, when the engine load is high, the piston temperature is high. In this case, the duty cycle of the piston cooling nozzle control valve is increased (i.e., the oil flow rate for cooling the piston is increased), and the duty cycle of the oil pump is also increased (to increase the overall oil flow rate when it is insufficient; this needs to be considered in conjunction with other oil flow requirements). When the engine load is low, the piston temperature is low, and the duty cycle of the electronic piston cooling nozzle control valve is decreased (reducing the oil flow rate for cooling the piston).

[0046] In summary, this invention enables flexible adjustment of coolant temperature through integrated control of the water pump, thermostat, and radiator fan; flexible control of engine oil temperature through integrated control of the oil pump and oil thermostat; and flexible control of piston temperature through integrated control of the oil pump and piston cooling nozzle control valve.

[0047] Therefore, this invention can flexibly adjust the engine temperature (coolant temperature, oil temperature, piston temperature) by controlling each component in the cooling system in separate zones, thereby optimizing the control of engine temperature / heat load, improving fuel economy (by increasing oil temperature and reducing engine friction) and emissions (by controlling piston temperature and improving combustion), and enhancing engine reliability (by optimizing the control of heat load). Furthermore, the flexible temperature control can better adapt to different application scenarios and is suitable for widespread application.

[0048] Preferably, the process of setting corresponding cooling parameters and duty cycles of corresponding components based on engine speed and engine torque in the above method includes: setting corresponding cooling parameters (target coolant temperature, target oil temperature, and target piston temperature) for different engine speeds and engine torques; determining the corresponding test parameters (actual coolant temperature, engine oil temperature, and actual piston temperature) for each cooling parameter; the test parameters can be obtained through simulation testing based on the parameters of the corresponding engine speed and engine torque; and determining the duty cycle of the corresponding components (coolant temperature control component, oil temperature control component, and piston temperature control component) based on the cooling parameters and their corresponding test parameters (the duty cycle is determined by consulting a known table). In this embodiment, the target coolant temperature for different engine speeds and engine torques is shown in Table 2.

[0049] Table 2. Target Coolant Temperature at Different Engine Speeds and Torques

[0050]

[0051] The temperature zone control system for an automobile engine in this embodiment of the invention includes a coolant temperature regulating component, an oil temperature regulating component, and a piston temperature regulating component; the coolant temperature regulating component includes an electronic cooling fan, an electronic water pump, and an electronic thermostat; the oil temperature regulating component includes an electronic oil pump and an electronic oil thermostat; the piston temperature regulating component includes an electronic piston cooling nozzle control valve and an electronic oil pump; it also includes a temperature parameter setting module and a zone temperature regulating module.

[0052] The temperature control parameter setting module is used to: set the corresponding cooling parameters and duty cycles of the corresponding components according to the engine speed and engine torque; the cooling parameters include the target cooling temperature, the corresponding component of which is the coolant temperature control component; the target engine oil temperature, the corresponding component of which is the engine oil temperature control component; and the target piston temperature, the corresponding component of which is the piston temperature control component.

[0053] The zone temperature control module is used for:

[0054] (1) When the actual cooling water temperature flowing through any cooling water temperature regulating component is detected to be above the target cooling water temperature after adjustment by the thermostat, the duty cycle of any cooling water temperature regulating component is increased. Specifically, the duty cycle of the water pump is increased. When the duty cycle of the water pump reaches its maximum and the actual cooling water temperature is still above the target cooling water temperature, the duty cycle of the cooling fan is increased. When the actual cooling water temperature flowing through any cooling water temperature regulating component is detected to be lower than the target cooling water temperature after adjustment by the thermostat, the duty cycle of any cooling water temperature regulating component is decreased. Specifically, the duty cycle of the cooling fan is decreased. When the duty cycle of the cooling fan reaches its minimum and the actual cooling water temperature is still lower than the target cooling water temperature, the duty cycle of the water pump is decreased.

[0055] (2) When the actual oil temperature flowing through any oil temperature regulating component is detected to be above the target oil temperature, the duty cycle of any oil temperature regulating component is increased; when the actual oil temperature flowing through any oil temperature regulating component is detected to be below the target oil temperature, the duty cycle of any oil temperature regulating component is decreased.

[0056] (3) When the actual piston temperature is detected to be above the target piston temperature, increase the duty cycle of any piston temperature control component; when the actual piston temperature is detected to be below the target piston temperature, decrease the duty cycle of any piston temperature control component.

[0057] Those skilled in the art will understand that all or some of the steps, systems, and apparatuses disclosed above, and their functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof. In hardware implementations, the division between functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit (ASIC). Such software can be distributed on a computer-readable storage medium, which may include computer-readable storage media (or non-transitory media) and communication media (or transient media).

[0058] As is known to those skilled in the art, the term computer-readable storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer-readable storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, it is known to those skilled in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0059] For example, the computer-readable storage medium may be an internal storage unit of the electronic device described in the foregoing embodiments, such as a hard disk or memory of the electronic device. The computer-readable storage medium may also be an external storage device of the electronic device, such as a plug-in hard disk, smart media card (SMC), secure digital card (SD), flash card, etc., provided on the electronic device.

[0060] The above are merely specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A temperature zone control method for an automobile engine, the method being based on the engine's cooling system, the cooling system comprising a coolant temperature regulating component, an oil temperature regulating component, and a piston temperature regulating component; the coolant temperature regulating component comprising a radiator fan, a water pump, and a thermostat; the oil temperature regulating component comprising an oil pump and an oil thermostat; and the piston temperature regulating component comprising a piston cooling nozzle control valve and an oil pump; characterized in that, The method includes the following steps: setting corresponding cooling parameters and duty cycles of corresponding components based on engine speed and engine torque; the cooling parameters include a target cooling temperature, and the corresponding component is a coolant temperature regulating component; when it is detected that the actual coolant temperature flowing through any coolant temperature regulating component after thermostat adjustment is above the target coolant temperature, the duty cycle of any coolant temperature regulating component is increased; when it is detected that the actual coolant temperature flowing through any coolant temperature regulating component after thermostat adjustment is below the target coolant temperature, the duty cycle of any coolant temperature regulating component is decreased. The process of increasing the duty cycle of any cooling water temperature regulating component includes: increasing the duty cycle of the water pump; when the duty cycle of the water pump reaches its maximum and the actual cooling water temperature is still above the target cooling water temperature, increasing the duty cycle of the cooling fan; the process of decreasing the duty cycle of any cooling water temperature regulating component includes: decreasing the duty cycle of the cooling fan; when the duty cycle of the cooling fan reaches its minimum and the actual cooling water temperature is still below the target cooling water temperature, decreasing the duty cycle of the water pump. The cooling parameters also include the target oil temperature, the corresponding component of which is an oil temperature regulating component; the method further includes the following steps: when the actual oil temperature flowing through any oil temperature regulating component is detected to be above the target oil temperature, the duty cycle of any oil temperature regulating component is increased; when the actual oil temperature flowing through any oil temperature regulating component is detected to be below the target oil temperature, the duty cycle of any oil temperature regulating component is decreased. The cooling parameters also include the target piston temperature, the corresponding component of which is the piston temperature regulating component; the method also includes the following steps: when the actual piston temperature is detected to be above the target piston temperature, the duty cycle of any piston temperature regulating component is increased; when the actual piston temperature is detected to be below the target piston temperature, the duty cycle of any piston temperature regulating component is decreased.

2. The temperature zone control method for an automobile engine as described in claim 1, characterized in that: The process of setting corresponding cooling parameters and duty cycles of corresponding components based on engine speed and engine torque includes: setting corresponding cooling parameters for different engine speeds and engine torques, determining the test parameters corresponding to each cooling parameter, and determining the duty cycle of the corresponding component based on the cooling parameters and their corresponding test parameters.

3. A temperature zone control system for an automobile engine, characterized in that: The system includes a temperature control parameter setting module and a zone temperature control module; The temperature control parameter setting module is used to: set the corresponding cooling parameters and duty cycles of the corresponding components according to the engine speed and engine torque; the cooling parameters include the target cooling temperature, and the corresponding component is the coolant temperature control component; The zone temperature control module is used to: increase the duty cycle of any cooling water temperature control component when the actual cooling water temperature flowing through any cooling water temperature control component after adjustment by the thermostat is above the target cooling water temperature; and decrease the duty cycle of any cooling water temperature control component when the actual cooling water temperature flowing through any cooling water temperature control component after adjustment by the thermostat is below the target cooling water temperature. The process of the zone temperature control module increasing the duty cycle of any cooling water temperature control component includes: increasing the duty cycle of the water pump; when the duty cycle of the water pump reaches its maximum and the actual cooling water temperature is still above the target cooling water temperature, increasing the duty cycle of the cooling fan; the process of the zone temperature control module decreasing the duty cycle of any cooling water temperature control component includes: decreasing the duty cycle of the cooling fan; when the duty cycle of the cooling fan reaches its minimum and the actual cooling water temperature is still below the target cooling water temperature, decreasing the duty cycle of the water pump. The cooling parameters also include the target oil temperature, the corresponding component of which is the oil temperature regulating component; the zone temperature regulating module is also used to: increase the duty cycle of any oil temperature regulating component when the actual oil temperature flowing through any oil temperature regulating component is detected to be above the target oil temperature; and decrease the duty cycle of any oil temperature regulating component when the actual oil temperature flowing through any oil temperature regulating component is detected to be below the target oil temperature. The cooling parameters also include the target piston temperature, the corresponding component of which is the piston temperature control component; the zone temperature control module is also used to: increase the duty cycle of any piston temperature control component when the actual piston temperature is detected to be above the target piston temperature; and decrease the duty cycle of any piston temperature control component when the actual piston temperature is detected to be below the target piston temperature.

4. The temperature zoning control system for an automobile engine as described in claim 3, characterized in that: The system also includes a coolant temperature control component, an oil temperature control component, and a piston temperature control component; the coolant temperature control component includes an electronic cooling fan, an electronic water pump, and an electronic thermostat; the oil temperature control component includes an electronic oil pump and an electronic oil thermostat; and the piston temperature control component includes an electronic piston cooling nozzle control valve and an electronic oil pump.

Images