A vehicle fuel-saving control system and method based on vehicle speed and instantaneous fuel consumption

Abstract

The vehicle fuel-saving control system and method based on vehicle speed and instantaneous fuel consumption of the present application comprises an intelligent fuel-saving control system composed of a microcontroller and peripheral circuits, the intelligent fuel-saving controller communicates with the driving computer ECU through the CAN bus to obtain the vehicle speed and fuel consumption data; the signal input end of the intelligent fuel-saving controller is connected with the throttle pedal signal output end and the brake pedal signal output end respectively to obtain the throttle pedal control voltage signal and the brake signal of the vehicle respectively; the signal output end of the intelligent fuel-saving control system is connected with the input end of the driving computer ECU. The vehicle fuel-saving control system and method can reduce the unnecessary high fuel consumption behavior caused by the bad driving habits of the driver to reduce the vehicle operation fuel consumption, the system is low in cost, convenient to install, reliable in operation and can effectively reduce the vehicle fuel consumption without significantly increasing the operation cost of the vehicle owner.

Description

TECHNICAL FIELD

[0001] The present application relates to a vehicle fuel saving control system and method, more particularly, it is especially related to a vehicle fuel saving control system and method based on vehicle speed and instantaneous fuel consumption. BACKGROUND

[0002] Fuel saving is not only related to the state policy of energy saving and emission reduction, but also related to the personal interests of every car owner. In the current environment of continuously decreasing freight and increasing vehicle operating costs, how to further reduce fuel consumption at a lower cost is a problem we need to solve.

[0003] Nowadays, various commercial vehicle manufacturers have made various ways to improve vehicle fuel economy, including improving engine technology, reducing wind resistance, optimizing gearbox, etc. All of these solutions have achieved relatively obvious effect. However, the driving behavior of the driver is also a key factor affecting the final operating fuel consumption of the vehicle. If the adverse effects of the driving habit of the driver on fuel consumption can be reduced, it will be very effective for reducing fuel consumption.

[0004] The patent document "Intelligent fuel saving cruise control method CN 108438002 B" describes an intelligent fuel saving cruise control method, but this patent only focuses on the factor of driving speed and fails to effectively combine the key parameter of instantaneous fuel consumption, so it cannot achieve ideal fuel saving effect. The patent document "Fuel saving driving system CN 104085398 B" discloses a fuel saving driving system, but this method requires the driver to pay attention to the vehicle operating state in real time and control the fuel saving of the system in real time, and it does not describe the specific fuel saving logic.

[0005] The present application reduces the unnecessary high fuel consumption behavior caused by the bad driving habit of the driver to reduce the operating fuel consumption of the vehicle. The system is low in cost, easy to install, reliable in operation, and can effectively reduce the fuel consumption of the vehicle without significantly increasing the operating cost of the vehicle owner. SUMMARY

[0006] The present application provides a vehicle fuel saving control system and method based on vehicle speed and instantaneous fuel consumption to overcome the above technical problems.

[0007] The vehicle fuel-saving control system based on vehicle speed and instantaneous fuel consumption of the application comprises an intelligent fuel-saving control system composed of a microcontroller and peripheral circuits, and a vehicle to be controlled is provided with a driving computer ECU, an accelerator pedal and a brake pedal; the intelligent fuel-saving control system is in communication with the driving computer ECU through a CAN bus to obtain the vehicle speed and fuel consumption data of the vehicle; the signal input end of the intelligent fuel-saving control system is connected with the signal output end of the accelerator pedal and the signal output end of the brake pedal respectively to obtain the accelerator pedal control voltage signal and the brake signal of the vehicle respectively; and the signal output end of the intelligent fuel-saving control system is connected with the input end of the driving computer ECU to input the accelerator pedal control voltage signal to the driving computer ECU.

[0008] The vehicle fuel-saving control system based on vehicle speed and instantaneous fuel consumption of the application, the intelligent fuel-saving control system is connected with an oil-saving mode button, an efficient mode button, an emergency shutdown button and an audible and visual alarm, the oil-saving mode button and the efficient mode button are opening buttons of the intelligent fuel-saving control system; the intelligent fuel-saving control system is connected with a distance measuring radar for measuring the distance to the front vehicle.

[0009] The vehicle fuel-saving control system based on vehicle speed and instantaneous fuel consumption of the application, the signal input end of the intelligent fuel-saving control system connected with the accelerator pedal is connected with the accelerator signal output end of the driving computer ECU on the intelligent fuel-saving control system through a short-circuit relay.

[0010] The control method of the vehicle fuel-saving control system based on vehicle speed and instantaneous fuel consumption of the application, characterized in that the following steps are sequentially implemented:

[0011] a. Cruise parameter setting, setting the cruise speed lower limit SpeedMin, the cruise speed upper limit SpeedMax and the cruise fuel consumption upper limit OilMax in the intelligent fuel-saving control system, the cruise speed lower limit SpeedMin and the cruise speed upper limit SpeedMax form the cruise speed interval [SpeedMin, SpeedMax];

[0012] b. Obtaining the vehicle operating parameters when the system intervenes, at the intervention time of the intelligent fuel-saving control system, obtaining the vehicle speed and instantaneous fuel consumption at the intervention time through communication with the driving computer ECU, and defining them as the intervention speed Speed_M and the intervention instantaneous fuel consumption IFC_M respectively, the intelligent fuel-saving control system obtains the accelerator pedal control voltage through the output signal of the accelerator pedal, and defines it as the intervention accelerator pedal control voltage AP_M; and initializes the accelerator pedal control voltage AP_ECU input by the intelligent fuel-saving control system to the driving computer ECU to be equal to the intervention accelerator pedal control voltage AP_M;

[0013] c) Real-time vehicle running parameters are obtained. The intelligent fuel-saving control system periodically obtains the current real-time vehicle speed Speed and real-time instantaneous fuel consumption IFC through communication with the vehicle computer ECU;

[0014] d) Vehicle speed lower limit judgment and strategy. It is judged whether the real-time vehicle speed Speed≤cruise speed lower limit SpeedMin is true. If not, step e) is executed. If true, it indicates that the current real-time vehicle speed Speed is lower than the lower limit value SpeedMin of the cruise speed interval, and the value of the accelerator pedal control voltage AP_ECU input by the intelligent fuel-saving control system to the vehicle computer ECU is increased to increase the vehicle speed. At the same time, the real-time instantaneous fuel consumption IFC of the vehicle is obtained, and the value of the intervention instantaneous fuel consumption IFC_M is adjusted to the value of the real-time instantaneous fuel consumption IFC. Step f) is executed.

[0015] e) Vehicle speed upper limit judgment and strategy. It is judged whether the real-time vehicle speed Speed≥cruise speed upper limit SpeedMax is true. If not, step f) is executed. If true, it indicates that the current real-time vehicle speed Speed is higher than the upper limit value SpeedMax of the cruise speed interval, and the value of the accelerator pedal control voltage AP_ECU input by the intelligent fuel-saving control system to the vehicle computer ECU is reduced to the idle speed voltage to stop fuel supply, and the intervention instantaneous fuel consumption IFC_M is adjusted by 5%. Step f) is executed.

[0016] f) Intermediate vehicle speed control strategy. It is judged whether the real-time vehicle speed Speed> cruise speed lower limit SpeedMin and the real-time vehicle speed Speed< cruise speed upper limit SpeedMax are true. If not, step d) is executed. If true, it indicates that the current real-time vehicle speed Speed is within the cruise speed interval [SpeedMin, SpeedMax], and step g) is executed to judge the intervention instantaneous fuel consumption.

[0017] g) Instantaneous fuel consumption is too high. It is judged whether the intervention instantaneous fuel consumption IFC_M≥cruise fuel consumption upper limit OilMax is true. If true, the value of the intervention instantaneous fuel consumption IFC_M is adjusted to the value of the cruise fuel consumption upper limit OilMax, and the value of the instantaneous fuel consumption IFC is fixed to the value of the intervention instantaneous fuel consumption IFC_M by reducing the value of the accelerator pedal control voltage AP_ECU input by the intelligent fuel-saving control system to the vehicle computer ECU. Then step b) is executed. If not, step h) is executed.

[0018] h) If the instantaneous fuel consumption IFC is appropriate, and the intervention instantaneous fuel consumption IFC_M is less than the upper limit of the cruising fuel consumption OilMax, then the value of the instantaneous fuel consumption IFC is fixed to the value of the intervention instantaneous fuel consumption IFC_M by reducing or increasing the value of the accelerator pedal control voltage AP_ECU input to the driving computer ECU by the intelligent fuel-saving control system, and then step b) is executed.

[0019] The control method of the vehicle fuel-saving control system based on vehicle speed and instantaneous fuel consumption of the application, the fuel-saving mode button and the high-efficiency mode button correspond to the fuel-saving mode SavingMode and the high-efficiency mode SpeedMode respectively, and the fuel-saving mode SavingMode and the high-efficiency mode SpeedMode correspond to different upper limit of cruising vehicle speed SpeedMax, lower limit of cruising vehicle speed SpeedMin and upper limit of cruising fuel consumption OilMax respectively; the upper limit of cruising vehicle speed, the lower limit of cruising vehicle speed and the upper limit of cruising fuel consumption under the fuel-saving mode SavingMode are less than the upper limit of cruising vehicle speed, the lower limit of cruising vehicle speed and the upper limit of cruising fuel consumption under the high-efficiency mode SpeedMode.

[0020] The control method of the vehicle fuel-saving control system based on vehicle speed and instantaneous fuel consumption of the application comprises the following interrupt service steps:

[0021] When the brake pedal is stepped on or the emergency shutdown button is pressed, or the accelerator pedal control voltage input to the intelligent fuel-saving control system is greater than the accelerator pedal control voltage input to the driving computer ECU by the intelligent fuel-saving control system, the intelligent fuel-saving control system follows the accelerator pedal control voltage input to the intelligent fuel-saving control system by the accelerator pedal, and outputs the control signal to close the relay, so as to realize the simultaneous switching of software and hardware and achieve double protection.

[0022] The control method of the vehicle fuel-saving control system based on vehicle speed and instantaneous fuel consumption of the application, when the intelligent fuel-saving control system detects that the distance between the vehicle and the front vehicle reaches the set distance through the ranging radar, the intelligent fuel-saving control system reduces the accelerator pedal control voltage AP_ECU input to the driving computer ECU to the idle speed voltage, stops fuel supply, and sends an alarm signal through the audible and visual alarm to prompt the driver.

[0023] The beneficial effects of the present application are: the vehicle fuel saving control system and method based on vehicle speed and instantaneous fuel consumption of the present application is provided with an intelligent fuel saving control system connected with the driving computer ECU, the throttle pedal and the brake pedal signal output end, so that the intelligent fuel saving control system takes the vehicle speed, fuel consumption, brake signal and throttle pedal control voltage, and can send the throttle pedal control voltage to the driving ECU to control the operation of the vehicle; during the cruise control of the vehicle, first establish the cruise speed interval [SpeedMin, SpeedMax] composed of the lower limit and the upper limit of the cruise speed, and establish the upper limit of the cruise fuel consumption OilMax, during the cruise control of the vehicle, first judge whether the real-time vehicle speed is in the cruise speed interval [SpeedMin, SpeedMax], if the real-time vehicle speed is lower than the lower limit of the cruise speed SpeedMin, increase the throttle pedal control voltage AP_ECU input to the driving computer ECU to improve the speed, if the cruise speed is higher than the upper limit of the cruise speed, reduce the value of the throttle pedal control voltage AP_ECU input to the driving computer ECU to the idle voltage to reduce the speed; when the speed is in the cruise speed interval [SpeedMin, SpeedMax], then judge whether the real-time instantaneous fuel consumption IFC is higher than the upper limit of the cruise fuel consumption OilMax, if higher, reduce the value of the throttle pedal control voltage AP_ECU input to the driving computer ECU, maintain the real-time instantaneous fuel consumption IFC at the upper limit of the cruise fuel consumption OilMax, if the real-time instantaneous fuel consumption IFC is lower than the upper limit of the cruise fuel consumption OilMax, maintain the instantaneous fuel consumption unchanged; in this way, not only through the control of the vehicle speed, it is maintained in the cruise speed interval, but also the real-time instantaneous fuel consumption of the vehicle is controlled below the upper limit of the cruise fuel consumption OilMax, and the increased intelligent fuel saving control system will not significantly increase the cost, it can be seen that the present application can reduce the unnecessary high fuel consumption behavior caused by the bad driving habits of the driver to reduce the fuel consumption of the vehicle, the system has low cost, convenient installation and reliable operation, can effectively reduce the fuel consumption of the vehicle without significantly increasing the operating cost of the vehicle owner. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The schematic diagram of the vehicle fuel saving control system based on vehicle speed and instantaneous fuel consumption of the present application;

[0025] Figure 2 The flowchart of the control method of the vehicle fuel saving control system based on vehicle speed and instantaneous fuel consumption of the present application.

[0026] In the figure: 1 intelligent fuel saving control system, 2 driving computer ECU, 3 throttle pedal, 4 brake pedal. DETAILED DESCRIPTION

[0027] The present application will be further described below in conjunction with the drawings and examples.

[0028] As shown in Figure 1 The principle diagram of the vehicle fuel-saving control system based on vehicle speed and instantaneous fuel consumption of the present application is shown, which adds an intelligent fuel-saving control system 1 in the control system of the existing vehicle, the intelligent fuel-saving control system 1 is composed of a microcontroller and a peripheral circuit connected thereto, the microcontroller has the functions of signal acquisition, data operation and control output. The intelligent fuel-saving control system 1 is in communication with the driving computer ECU through the CAN bus to obtain the vehicle speed data and fuel consumption data; the signal input end of the intelligent fuel-saving control system 1 is connected with the signal output end of the accelerator pedal 3 and the brake pedal 4 respectively to obtain the accelerator pedal control voltage signal output by the accelerator pedal 3 and the brake signal output by the brake pedal 4. The signal output end of the intelligent fuel-saving control system 1 is connected with the input end of the driving computer ECU to send the accelerator pedal control voltage to the driving computer ECU.

[0029] The intelligent fuel-saving control system 1 is also connected with a fuel-saving mode button, a high-efficiency mode button, an emergency shutdown button and an audible and visual alarm, the fuel-saving mode button and the high-efficiency mode button are the start buttons of the intelligent fuel-saving control system, the fuel-saving mode button and the high-efficiency mode button control the intelligent fuel-saving control system 1 to operate in the fuel-saving mode or the high-efficiency mode respectively, the emergency shutdown button is used to shut down the operation of the intelligent fuel-saving control system 1, and the audible and visual alarm is used to send audible and visual alarm signals in the emergency state.

[0030] The signal input end connected with the accelerator pedal 3 on the intelligent fuel-saving control system 1 is connected with the signal output end connected with the driving computer ECU 2 on the intelligent fuel-saving control system through a relay, when the brake pedal is stepped on or the emergency shutdown button is pressed, or the accelerator pedal control voltage input into the intelligent fuel-saving control system is greater than the accelerator pedal control voltage input into the driving computer ECU by the intelligent fuel-saving control system, the intelligent fuel-saving control system will follow the accelerator pedal control voltage input into the intelligent fuel-saving control system by the accelerator pedal to input the accelerator pedal control voltage AP_ECU into the driving computer ECU, and output the control signal to make the relay close, so as to realize the simultaneous switching of software and hardware and realize double protection.

[0031] The control method of the vehicle fuel-saving control system based on vehicle speed and instantaneous fuel consumption of the present application is realized by the following steps in sequence:

[0032] a. Cruise parameter setting, setting the cruise speed lower limit SpeedMin, the cruise speed upper limit SpeedMax and the cruise fuel consumption upper limit OilMax in the intelligent fuel-saving control system, the cruise speed lower limit SpeedMin and the cruise speed upper limit SpeedMax form the cruise speed interval [SpeedMin, SpeedMax];

[0033] b). Obtain the vehicle operating parameters at the time of system intervention, the intelligent fuel-saving control system intervention time, obtain the vehicle speed and instantaneous fuel consumption at the intervention time through communication with the driving computer ECU, and define them as intervention speed Speed_M and intervention instantaneous fuel consumption IFC_M, respectively. The intelligent fuel-saving control system obtains the accelerator pedal control voltage through the output signal of the accelerator pedal, and defines it as intervention accelerator pedal control voltage AP_M. Initialize the accelerator pedal control voltage AP_ECU input by the intelligent fuel-saving control system to the driving computer ECU to be equal to the intervention accelerator pedal control voltage AP_M;

[0034] c). Obtain real-time vehicle operating parameters, the intelligent fuel-saving control system periodically obtains the current real-time vehicle speed Speed and real-time instantaneous fuel consumption IFC through communication with the driving computer ECU;

[0035] d). Speed lower limit judgment and strategy, judge whether the real-time vehicle speed Speed≤cruise speed lower limit SpeedMin is true, if not, execute step e); if true, it indicates that the current real-time vehicle speed Speed is lower than the lower limit value SpeedMin of the cruise speed interval, then increase the value of the accelerator pedal control voltage AP_ECU input by the intelligent fuel-saving control system to the driving computer ECU to increase the vehicle speed; At the same time, obtain the real-time instantaneous fuel consumption IFC of the vehicle, and adjust the value of the intervention instantaneous fuel consumption IFC_M to the value of the real-time instantaneous fuel consumption IFC; execute step f);

[0036] e). Speed upper limit judgment and strategy, judge whether the real-time vehicle speed Speed≥cruise speed upper limit SpeedMax is true, if not, execute step f); if true, it indicates that the current real-time vehicle speed Speed is higher than the upper limit value SpeedMax of the cruise speed interval, then reduce the value of the accelerator pedal control voltage AP_ECU input by the intelligent fuel-saving control system to the driving computer ECU to idle voltage, stop fuel supply, and at the same time, adjust the intervention instantaneous fuel consumption IFC_M to be 5% lower; execute step f);

[0037] f). Intermediate speed control strategy, judge whether the real-time vehicle speed Speed>cruise speed lower limit SpeedMin and the real-time vehicle speed Speed<cruise speed upper limit SpeedMax are true, if not, execute step d); if true, it indicates that the current real-time vehicle speed Speed is located in the cruise speed interval [SpeedMin, SpeedMax], then execute step g) to judge the intervention instantaneous fuel consumption;

[0038] g) If the instantaneous fuel consumption IFC_M is higher than the upper limit of the cruise fuel consumption OilMax, the value of the instantaneous fuel consumption IFC_M is adjusted to the value of the upper limit of the cruise fuel consumption OilMax, and then the value of the instantaneous fuel consumption IFC is fixed to the value of the instantaneous fuel consumption IFC_M by reducing the value of the accelerator pedal control voltage AP_ECU input to the ECU from the intelligent fuel-saving control system, and step b) is performed; if not, step h) is performed.

[0039] h) If the instantaneous fuel consumption IFC_M is lower than the upper limit of the cruise fuel consumption OilMax, the value of the instantaneous fuel consumption IFC is fixed to the value of the instantaneous fuel consumption IFC_M by reducing or increasing the value of the accelerator pedal control voltage AP_ECU input to the ECU from the intelligent fuel-saving control system, and step b) is performed.

[0040] Wherein, the saving mode button and the high-efficiency mode button correspond to the saving mode SavingMode and the high-efficiency mode SpeedMode, respectively, and the saving mode SavingMode and the high-efficiency mode SpeedMode correspond to different upper limits of the cruise speed SpeedMax, lower limits of the cruise speed SpeedMin and upper limits of the cruise fuel consumption OilMax, respectively; the upper limit of the cruise speed, the lower limit of the cruise speed and the upper limit of the cruise fuel consumption under the saving mode SavingMode are less than the upper limit of the cruise speed, the lower limit of the cruise speed and the upper limit of the cruise fuel consumption under the high-efficiency mode SpeedMode. For example, the cruise speed interval of the saving mode is [50km / h, 80km / h], and the cruise speed interval of the high-efficiency mode is [6km / h, 90km / h].

[0041] When the intelligent fuel-saving control system detects that the distance between the vehicle and the front vehicle reaches the set distance through the ranging radar, the intelligent fuel-saving control system reduces the accelerator pedal control voltage AP_ECU input to the ECU to the idle voltage, stops fuel supply, and sends an alarm signal through the audible and visual alarm to prompt the driver.

[0042] In this paper, all the data thresholds of fuel consumption, vehicle speed and accelerator pedal control voltage are 5% more than the threshold, and then the corresponding logic is executed. After the system intervention of the present application, the driver does not need to control the accelerator pedal, and the vehicle can travel in the best fuel-saving state according to the preset speed range.

Claims

1. A control method of a vehicle fuel-saving control system based on vehicle speed and instantaneous fuel consumption, the vehicle fuel-saving control system based on vehicle speed and instantaneous fuel consumption comprising an intelligent fuel-saving control system (1) composed of a microcontroller and peripheral circuits, a vehicle to be controlled being provided with a driving computer ECU (2), an accelerator pedal (3) and a brake pedal (4); the intelligent fuel-saving control system communicates with the driving computer ECU via a CAN bus to obtain the vehicle speed and fuel consumption data; the signal input end of the intelligent fuel-saving control system is connected with the signal output end of the accelerator pedal and the signal output end of the brake pedal respectively to obtain the accelerator pedal control voltage signal and the brake signal of the vehicle respectively; the signal output end of the intelligent fuel-saving control system is connected with the input end of the driving computer ECU to input the accelerator pedal control voltage signal to the driving computer ECU; The intelligent fuel-saving control system (1) is connected with a fuel-saving mode button, a high-efficiency mode button, an emergency shutdown button and an audible and visual alarm, the fuel-saving mode button and the high-efficiency mode button being the start buttons of the intelligent fuel-saving control system; the intelligent fuel-saving control system is connected with a ranging radar for measuring the distance to the vehicle in front; The signal input end of the intelligent fuel-saving control system (1) connected with the accelerator pedal (3) is connected with the accelerator signal output end of the intelligent fuel-saving control system connected with the driving computer ECU (2) via a relay; characterized in that The control method of the vehicle fuel-saving control system based on vehicle speed and instantaneous fuel consumption is realized by the following steps in sequence: a. Cruise parameter setting, setting the cruise speed lower limit SpeedMin, the cruise speed upper limit SpeedMax and the cruise fuel consumption upper limit OilMax in the intelligent fuel-saving control system, the cruise speed lower limit SpeedMin and the cruise speed upper limit SpeedMax forming the cruise speed interval [SpeedMin, SpeedMax]; b. Obtaining the system intervention vehicle operating parameters, at the intervention time of the intelligent fuel-saving control system, obtaining the vehicle speed and instantaneous fuel consumption at the intervention time through communication with the driving computer ECU and defining them as the intervention vehicle speed Speed_M and the intervention instantaneous fuel consumption IFC_M respectively, the intelligent fuel-saving control system obtaining the accelerator pedal control voltage through the output signal of the accelerator pedal and defining it as the intervention accelerator pedal control voltage AP_M; And initializing the accelerator pedal control voltage AP_ECU input by the intelligent fuel-saving control system to the driving computer ECU being equal to the intervention accelerator pedal control voltage AP_M; c. Obtaining real-time vehicle operating parameters, the intelligent fuel-saving control system periodically and real-timely obtaining the current real-time vehicle speed Speed and real-time instantaneous fuel consumption IFC through communication with the driving computer ECU; d) Speed≤SpeedMin, if not, then execute step e); if yes, Speed < SpeedMin, then increase the value of AP_ECU, and get the value of IFC, then set IFC_M = IFC, then execute step f); e) Speed≥SpeedMax, if not, then execute step f); if yes, Speed > SpeedMax, then decrease the value of AP_ECU to idle voltage, stop fuel supply, and set IFC_M = IFC_M - 5%, then execute step f); f) Speed > SpeedMin and Speed < SpeedMax, if not, then execute step d); if yes, Speed ∈ [SpeedMin, SpeedMax], then execute step g) to judge IFC_M; g) IFC_M≥OilMax, if yes, then set IFC_M = OilMax, and set IFC = IFC_M, then execute step b); if not, then execute step h); h) IFC_M < OilMax, then set IFC = IFC_M, then execute step b).

2. A control method of a vehicle fuel saving control system based on vehicle speed and instantaneous fuel consumption according to claim 1, characterized in that, The saving mode button and the high efficiency mode button correspond to a saving mode SavingMode and a high efficiency mode SpeedMode respectively, and the saving mode SavingMode and the high efficiency mode SpeedMode correspond to different cruise speed upper limits SpeedMax, cruise speed lower limits SpeedMin and cruise oil consumption upper limits OilMax respectively; the cruise speed upper limit, the cruise speed lower limit and the cruise oil consumption upper limit under the saving mode SavingMode are less than the cruise speed upper limit, the cruise speed lower limit and the cruise oil consumption upper limit under the high efficiency mode SpeedMode respectively.

3. A control method of a vehicle fuel saving control system based on vehicle speed and instantaneous fuel consumption according to claim 1 or 2, characterized in that, The method comprises the following interrupt service steps: When the brake pedal is stepped on or the emergency shutdown button is pressed, or the throttle pedal control voltage input into the intelligent saving control system is greater than the throttle pedal control voltage input into the driving computer ECU by the intelligent saving control system, the intelligent saving control system will follow the throttle pedal control voltage input into the intelligent saving control system by the throttle pedal to input the throttle pedal control voltage AP_ECU into the driving computer ECU, and output a control signal to make the relay close, so as to realize the simultaneous switching of software and hardware and realize double protection.

4. A control method of a vehicle fuel saving control system based on vehicle speed and instantaneous fuel consumption according to claim 1 or 2, characterized by: When the intelligent saving control system detects that the distance between the vehicle and the front vehicle reaches the set distance through the ranging radar, the intelligent saving control system will reduce the throttle pedal control voltage AP_ECU input into the driving computer ECU to the idle speed voltage, stop fuel supply, and send an alarm signal through the audible and visual alarm to prompt the driver.

Images