An intelligent control method and system for engine idling speed

Abstract

This invention relates to an intelligent engine idling speed control method and system, belonging to the field of automotive control. The method reads the current operating status of the vehicle's electrical appliances and matches them against a pre-established appliance combination matrix. If a match is found with any combination in the matrix, the engine idling speed is not increased. The appliance combination matrix includes several combinations, each containing several non-operating appliances. When all appliances in a combination except the non-operating ones are running, the total power consumption does not exceed the power generation when the engine idling speed is not increased. A successful match is considered achieved when the non-operating appliances in the current vehicle's electrical appliances completely match the non-operating appliances in the corresponding combination. If a successful match is found, the engine's power generation is not increased, thus reducing the probability of the engine increasing its speed and lowering the vehicle's fuel consumption.

Description

Technical Field

[0001] This invention relates to an intelligent control method and system for engine idling speed, belonging to the field of automotive control. Background Technology

[0002] The bus generator is connected to the engine via a belt. When the engine starts, it drives the generator to rotate and generate electricity. The generator speed is equal to the engine speed multiplied by the generator transmission ratio; the higher the generator speed, the greater the power generation, and vice versa. When the bus engine is warming up and idling, the speed is generally 600-750 r / min. The generator speed is low, and the power generation is small. If the air conditioning is turned on at this time, the power consumption of the air conditioning is very high. To meet the power needs of the air conditioning and other equipment in the vehicle, the engine speed needs to be increased to increase the power generation. When checking the power consumption of the entire vehicle, to avoid battery depletion and to consider the balance of power consumption of the entire vehicle, the real-time power generation of the generator should be greater than the real-time power demand of the vehicle's electrical equipment. In actual power matching design, as long as there is a possibility of certain electrical equipment being used in idling conditions, their power demand will be considered, regardless of whether these devices are used simultaneously. It is necessary to cover the total power consumption of all electrical equipment, which will result in a large redundancy in power generation most of the time. The higher the engine speed, the greater the fuel consumption. Therefore, increasing the engine speed when idling with the air conditioning on, especially in scenarios where passengers need to idle with the air conditioning on for extended periods, has a significant impact on the vehicle's fuel consumption, resulting in energy waste and environmental pollution.

[0003] like Figure 2 The image shows a power balance calculation table for a certain car model. After considering the frequency of idling, assuming all electrical appliances operate simultaneously with the air conditioning on, the maximum current reaches 172.39A. At idling speed of 700rpm, the power generation is 145A, which is insufficient to meet the power demand. However, when the idle speed is increased to 800rpm, the power generation is 180A, meeting the demand. In reality, however, it is extremely rare for all electrical appliances to be used simultaneously, resulting in redundant power generation in most cases, further increasing fuel consumption. Summary of the Invention

[0004] The purpose of this invention is to provide an intelligent engine idling speed control method and system to solve the problems of high fuel consumption, energy waste and environmental pollution.

[0005] To achieve the above objectives, the present invention includes: This invention discloses an intelligent engine idling speed control method. The method reads the current operating status of the vehicle's electrical appliances and matches them with a pre-established appliance combination matrix. If a match is found with any combination in the appliance combination matrix, the engine idling speed is not increased. The appliance combination matrix includes several combinations, each containing several non-operating electrical appliances. When all electrical appliances in each combination are running except for the non-operating ones, the total power consumption does not exceed the power generation when the engine idling speed is not increased. A successful match is considered achieved when the non-operating electrical appliances in the current vehicle's electrical appliances completely match the non-operating electrical appliances in the corresponding combination.

[0006] The system further reads the current operating status of the vehicle's electrical appliances and matches them with a pre-established electrical appliance combination matrix. If no match is found with any combination in the electrical appliance combination matrix, the engine idle speed is increased.

[0007] During the further matching process, the non-operating electrical appliances in the current vehicle electrical system are compared with the non-operating electrical appliances in each combination in turn. If they are completely consistent with the non-operating electrical appliances in a certain combination, the engine idle speed is not increased and the comparison ends.

[0008] Furthermore, all of the aforementioned combinations include air conditioning.

[0009] Furthermore, the combined matrix includes a combination of a water tank electric fan, high beam headlights, front fog lights, and air conditioning.

[0010] Furthermore, the combined matrix includes a combination of a water tank electric fan, high beam headlights, rear fog lights, and air conditioning.

[0011] Furthermore, the combined matrix includes a combination of a water tank electric fan, high beam headlights, parking lights, and air conditioning.

[0012] An intelligent engine idling speed control method, characterized by comprising: when the air conditioner is turned on, reading the current operating status of the vehicle's electrical appliances and matching them with a pre-established electrical appliance combination matrix; if a successful match is found with any combination in the electrical appliance combination matrix, the engine idling speed is not increased; the electrical appliance combination matrix includes several combinations, each combination including: several non-operating electrical appliances; when all electrical appliances except the non-operating ones in each combination are running, and the air conditioner is running, the total power consumption does not exceed the power generation when the engine idling speed is not increased; when the non-operating electrical appliances in the current vehicle's electrical appliances are completely consistent with the non-operating electrical appliances in the corresponding combination, the match is considered successful.

[0013] The system further reads the current operating status of the vehicle's electrical appliances and matches them with a pre-established electrical appliance combination matrix. If no match is found with any combination in the electrical appliance combination matrix, the engine idle speed is increased.

[0014] An intelligent engine idling speed control system includes a processor, characterized in that the processor executes a computer program to implement the above-described intelligent engine idling speed control method.

[0015] The beneficial effects of this invention are as follows: The matrix established by storing the total power consumption of all electrical appliances except those not in operation in each combination when they are running does not exceed the power generation when the engine is idling without increasing the power consumption is stored in the control system. The control system reads the electrical appliances that are not in operation through the vehicle network via the CAN bus, and matches the reading result of the control system with the combination matrix. If the match is successful, the power generation of the engine is not increased. By reducing the probability of the engine speed increasing, the fuel consumption of the car is reduced. Attached Figure Description

[0016] Figure 1 This is a flowchart of an intelligent engine idling speed control method according to the present invention; Figure 2 This invention provides a vehicle electrical balance calculation table for a passenger bus. Figure 3 This is the matrix combination table of Embodiment 1 of the method of the present invention; Figure 4 This is the matrix combination table of embodiment 2 of the method of the present invention; Figure 5 This is a schematic diagram of the matrix matching process of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0018] The concept of this invention is as follows: A combination matrix is ​​pre-established, comprising several combinations, each including several electrical appliances. In each combination, the total power consumption of all electrical appliances (excluding those not currently in operation) when running does not exceed the power generation when the engine is idling without increasing its output. This pre-established combination matrix is ​​stored in the vehicle control system. When the vehicle is idling, the control system reads the electrical appliances that are not currently in operation and matches the results with the combination matrix. If a match is found, the engine's power generation is not increased.

[0019] Method Example 1: An intelligent engine idling speed control method, such as Figure 1 The diagram shows a flowchart of an intelligent engine idle speed control method. It includes the following steps: 1) The control system reads non-operating electrical appliances from the vehicle network via the CAN bus; 2) Compare the read results with each matrix combination in the pre-established combination matrix; 3) If the match is successful, the engine speed will not be increased. That is, if the non-operating electrical appliance in the current vehicle's electrical system is completely consistent with the non-operating electrical appliance in a certain combination in the combination matrix, the match is considered successful, and the engine speed will not be increased.

[0020] Since the current operating status of the vehicle's electrical appliances is definite and unique, in order to save system resources, the matching process ends if a certain combination is successfully matched.

[0021] Specifically, the pre-established combination matrix in step 2) is a set of several combinations. All matrix combinations in the combination matrix satisfy the condition that when all electrical appliances except those not in operation are running in each combination, the total power consumption does not exceed the power generation when the engine is not idling.

[0022] Specifically, in this embodiment, the combination matrix is ​​formed as follows: Figure 3 The table shown includes the following combinations: Combination 1: Water tank electric fan, high beam headlights, front fog lights, air conditioning.

[0023] Combination 2: Water tank electric fan, high beam headlights, rear fog lights, air conditioning.

[0024] Combination 3: Water tank electric fan, high beam headlights, parking lights, air conditioner.

[0025] ... Figure 2 This embodiment provides a vehicle power balance calculation table for a passenger bus.

[0026] by Figure 2 bus, Figure 3 Taking the resulting combined matrix as an example, the above steps will be explained in detail: Depend on Figure 2 It is known that when all the automotive electrical appliances are working, the required current is 172.39A, and the engine speed is 800rpm. However, in reality, since it is extremely rare for all electrical appliances to work simultaneously, when the preset electrical appliances are not working, the power provided by the engine at 700rpm is sufficient for the currently working appliances. That is, the total current of the appliances in use is less than 145A. The preset non-working electrical appliances are grouped together, and these groups are stored as a matrix in the control system, such as... Figure 3 .like Figure 5When the car is idling, the control system reads the vehicle network via the CAN bus to identify inactive electrical appliances. It then matches the combination of these inactive appliances with combinations in a pre-built matrix. If a match is successful, the total electrical demand of the active appliances is less than 145A, which is less than the power required by the engine at 700 rpm. In this case, there is no need to increase the engine speed to meet the power requirements of the active appliances. If a match fails, it means that the total electrical demand of the active appliances is greater than 145A, which is greater than the power required by the engine at 700 rpm. Only then is the engine speed increased to 800 rpm to meet the power requirements of the active appliances, reducing the probability of the engine idling speed increasing.

[0027] To ensure coverage of more scenarios, one feasible approach is to write as many combinations as possible in the matrix.

[0028] To further reduce the probability of increased engine idling speed, one feasible approach is to include as many high-power electrical appliances as possible in the matrix combination.

[0029] Method Example 2: An intelligent engine idling speed control method, such as Figure 1 The diagram shows a flowchart of an intelligent engine idle speed control method. It includes the following steps: 1) The control system reads non-operating electrical appliances from the vehicle network via the CAN bus; 2) Compare the read results with each matrix combination in the pre-established combination matrix; 3) If the match is successful, the engine speed will not be increased. That is, if the non-operating electrical appliance in the current vehicle's electrical system is completely consistent with the non-operating electrical appliance in a certain combination in the combination matrix, the match is considered successful, and the engine speed will not be increased.

[0030] Specifically, the combination matrix in step 2) is a set of several matrix combinations. All matrix combinations in the combination matrix satisfy the condition that, when all appliances except those not in operation and the air conditioner are running, the total power consumption does not exceed the power generation when the engine is idling at its maximum speed. Specifically, this includes: Combination 1: Water tank electric fan, high beam headlights, front fog lights.

[0031] Combination 2: Water tank electric fan, high beam headlights, rear fog lights.

[0032] Combination 3: Water tank electric fan, high beam headlights, and parking lights. Specifically, the pre-established combination matrix in step 2) is a set of several combinations. All matrix combinations in the combination matrix satisfy the condition that when all electrical appliances except those not in operation in each combination are running, the total power consumption does not exceed the power generation when the engine is not idling.

[0033] Specifically, in this embodiment, the combination matrix is ​​formed as follows: Figure 4 The table shown includes the following combinations: Combination 1: Water tank electric fan, high beam headlights, front fog lights, air conditioning.

[0034] Combination 2: Water tank electric fan, high beam headlights, rear fog lights, air conditioning.

[0035] Combination 3: Water tank electric fan, high beam headlights, parking lights, air conditioner.

[0036] ... Figure 2 This embodiment provides a vehicle power balance calculation table for a passenger bus.

[0037] by Figure 2 bus, Figure 4 Taking the resulting combined matrix as an example, the above steps will be explained in detail: Depend on Figure 2 It is known that when all the car's electrical appliances are working, the required current is 172.39A, and the engine speed is 800rpm. However, in reality, since it's extremely rare for all electrical appliances to work simultaneously, when the air conditioning is on, if the preset electrical appliances are not working, the power provided by the engine at 700rpm is sufficient for the currently operating appliances and the air conditioning. That is, the total current drawn by the operating appliances and the air conditioning is less than 145A. The preset non-operating appliances are grouped together, and these groups are stored as a matrix in the control system, such as... Figure 3 .like Figure 5 When the car is idling, the control system reads the vehicle network via the CAN bus to identify inactive electrical appliances. It then matches the combination of these inactive appliances with combinations in a pre-built matrix. If a match is successful, the total electrical consumption of the active appliances and the air conditioner is less than 145A, which is less than the power consumption provided by the engine at 700 rpm. In this case, there is no need to increase the engine speed to meet the power demand of the active appliances. If a match fails, it means that the total power consumption of the active appliances is greater than 145A, which is greater than the power consumption provided by the engine at 700 rpm. Only then is the engine speed increased to 800 rpm to meet the power demand of the active appliances, reducing the probability of the engine idling speed increasing.

[0038] To ensure coverage of more scenarios, one feasible approach is to write as many combinations as possible in the matrix.

[0039] To further reduce the probability of increased engine idling speed, one feasible approach is to include as many high-power electrical appliances as possible in the matrix combination.

[0040] System Implementation Example: An intelligent engine idling speed control system includes a processor. The intelligent engine idling speed control system of this embodiment executes the intelligent engine idling speed control method as described in the method embodiments, which has been sufficiently clearly described in the method embodiments and will not be repeated here.

Claims

1. An engine idle intelligent control method, characterized by, include: Read the current operating status of the vehicle's electrical appliances and match them with a pre-established electrical appliance combination matrix. If a match is successfully made with any combination in the electrical appliance combination matrix, the engine idle speed will not increase. The electrical appliance combination matrix includes several combinations, each combination including: several non-operating electrical appliances. When all electrical appliances in each combination except the non-operating ones are running, the total power consumption does not exceed the power generation when the engine idle speed is not increased. A successful match is considered to be achieved when the electrical appliances that are not currently in operation in the vehicle are completely identical to the electrical appliances that are not currently in operation in the corresponding combination.

2. The engine idle intelligent control method according to claim 1, wherein The operating status of the vehicle's electrical appliances is read and matched with a pre-established electrical appliance combination matrix. If no match is found with any combination in the electrical appliance combination matrix, the engine idle speed is increased.

3. The engine idle intelligent control method of claim 1, wherein During the matching process, the non-operating electrical appliances in the current vehicle electrical system are compared sequentially with the non-operating electrical appliances in each combination. If a matching device is found to be completely identical to a non-operating electrical appliance in a certain combination, the engine idle speed is not increased, and the comparison ends.

4. The engine idle intelligent control method of claim 1, wherein All of the aforementioned combinations include air conditioning.

5. The intelligent engine idling speed control method according to claim 1, characterized in that, The combined matrix includes a combination of a water tank electric fan, high beam headlights, front fog lights, and air conditioning.

6. The intelligent engine idling speed control method according to claim 1, characterized in that, The combined matrix includes a combination of a water tank electric fan, high beam headlights, rear fog lights, and air conditioning.

7. The intelligent engine idling speed control method according to claim 1, characterized in that, The combined matrix includes a combination of a water tank electric fan, high beam headlights, parking lights, and air conditioning.

8. An intelligent control method for engine idling speed, characterized in that, include: When the air conditioner is turned on, the current working status of the vehicle's electrical appliances is read and matched with a pre-established electrical appliance combination matrix. If a match is successfully made with any combination in the electrical appliance combination matrix, the engine idle speed will not increase. The electrical appliance combination matrix includes several combinations, each combination including: several non-operating electrical appliances. When all electrical appliances and air conditioners in each combination are running, the total power consumption does not exceed the power generation when the engine is not idling. A successful match is considered to be achieved when the electrical appliances that are not currently in operation in the vehicle are completely identical to the electrical appliances that are not currently in operation in the corresponding combination.

9. The intelligent engine idling speed control method according to claim 8, characterized in that, The operating status of the vehicle's electrical appliances is read and matched with a pre-established electrical appliance combination matrix. If no match is found with any combination in the electrical appliance combination matrix, the engine idle speed is increased.

10. An intelligent control system for engine idling speed, comprising a processor, characterized in that, The processor executes a computer program to implement the engine idling speed intelligent control method as described in any one of claims 1-9.

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