Fuel pump control module

Abstract

The utility model relates to a fuel pump control module which comprises a single-chip microcomputer N32G435, the single-chip microcomputer N32G435 is electrically connected with a direct current motor, the input end of the single-chip microcomputer N32G435 is electrically connected with an ECM controller of a fuel vehicle, and a CAN transceiver circuit for transmitting data is connected between the input end of the single-chip microcomputer N32G435 and the ECM controller of the fuel vehicle. The output end of the single-chip microcomputer N32G435 is electrically connected with an oil pressure sensor FPS for detecting real-time oil pressure, PWM pulse level is output between the single-chip microcomputer N32G435 and the direct-current motor through a half-bridge drive circuit to control the rotating speed of a fuel pump motor, the oil pressure sensor FPS can detect oil pressure of a fuel system in real time and feed back information to a fuel pump control module, and the fuel pump control module controls the fuel pump to rotate. The PWM pulse level output by the single-chip microcomputer N32G435 can accurately control the rotating speed of the motor of the fuel pump, so that accurate control over the fuel delivery amount is achieved, and the fuel pressure can be adjusted by controlling the fuel amount of the fuel pump in real time.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel pump control, in particular to a fuel pump control module. Background Art

[0002] The function of the fuel pump control module is to suck fuel from the fuel tank, pressurize it and deliver it to the fuel supply pipe, and cooperate with the fuel pressure regulator to establish a certain fuel pressure, and cooperate with the fuel pressure regulator to ensure that the pressure in the fuel system is maintained within a constant range to meet the fuel requirements of the engine under different operating conditions. The fuel pump control module is a basic component of the automobile fuel injection system and is crucial to ensuring the normal operation of the engine and the safe driving of the vehicle.

[0003] The publication number is: CN217080639U discloses a new type of electronic fuel pump controller, including a controller, a driver chip, a MOS tube drive circuit, a current detection circuit, a drive power control circuit, a DC power module, a DC power to 12V module and a 12V to 5V module. The utility model provides a new type of electronic fuel pump controller that uses a current detection circuit to accurately collect data such as the use status and number of times of the fuel pump, controls the power supply status of the MOS tube drive circuit through the drive power control circuit, and disconnects the power supply of the MOS tube drive circuit when the MOS tube drive circuit is not working, so as to prevent the components in the MOS tube drive circuit from being in a powered-on state all the time, thereby protecting the components and reducing energy consumption.

[0004] The control module of the above-mentioned fuel pump controller cannot detect the oil pressure data inside the vehicle in real time and provide the corresponding oil pressure, which will lead to the inability to accurately adjust the fuel pressure, which will cause the fuel pressure to be too high or too low. Excessive oil pressure may damage the components of the fuel system, while too low oil pressure may cause the engine to run unstably or even stall. The oil pressure cannot be monitored and adjusted in real time. If the vehicle encounters an abnormal situation while driving, such as a failure of the fuel pump control module, the vehicle may suddenly lose power, which is especially dangerous when driving at high speeds. There is a major safety hazard, so this technology still has room for modification. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a fuel pump control module in view of the deficiencies of the above-mentioned prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a fuel pump control module, including a single-chip microcomputer N32G435, wherein the single-chip microcomputer N32G435 is electrically connected to a DC motor, and is characterized in that: the input end of the single-chip microcomputer N32G435 is electrically connected to the ECM controller of the fuel vehicle, a CAN transceiver circuit for transmitting data is connected between the input end of the single-chip microcomputer N32G435 and the ECM controller of the fuel vehicle, the output end of the single-chip microcomputer N32G435 is electrically connected to an oil pressure sensor FPS for detecting real-time oil pressure, and the speed of the DC motor is controlled by setting a half-bridge drive circuit to output a PWM pulse level.

[0007] By adopting the above technical solution, the oil pressure of the fuel system can be detected in real time through the oil pressure sensor FPS and the ECM controller, and this information can be fed back to the single-chip microcomputer N32G435. The PWM (pulse width modulation) pulse level output by the single-chip microcomputer N32G435 can accurately control the speed of the DC motor, thereby realizing accurate control of the fuel delivery amount. The fuel amount of the fuel pump can be controlled in real time to adjust the fuel pressure, ensuring that the oil pressure is stable within the ideal range, ensuring the stability of the internal pressure of the fuel pump, and improving safety during driving.

[0008] The above-mentioned fuel pump control module can be further configured as follows: a voltage sensor capable of monitoring voltage in real time is connected in series between the oil pressure sensor FPS and the single-chip microcomputer N32G435, and a protection circuit is also provided between the voltage sensor and the single-chip microcomputer N32G435, one end of the protection circuit is connected to the voltage sensor and the other end is connected to the single-chip microcomputer N32G435, and the protection circuit is enabled when the voltage sensor detects an abnormality.

[0009] By adopting the above technical solution, the voltage sensor can monitor the voltage of the circuit in real time. When abnormal voltage is detected, the protection circuit will be immediately enabled to protect the microcontroller N32G435 from damage, which helps to improve the reliability and durability of the entire fuel pump control module. The voltage sensor can provide real-time feedback of voltage abnormalities, help maintenance personnel quickly locate the problem, and simplify the fault diagnosis process. The protection circuit can ensure that the performance of the fuel pump control module is fully utilized within the normal voltage range to avoid safety problems caused by voltage problems.

[0010] The above-mentioned fuel pump control module can be further configured as follows: the ECM controller is electrically connected to a fuel pump relay, the output end of the fuel pump relay is electrically connected to an EMC filter, the output end of the EMC filter is connected to a current sensor, and the current sensor is electrically connected to the single-chip computer N32G435.

[0011] By adopting the above technical solution, the EMC filter can effectively filter electromagnetic interference, ensure the stable operation of the fuel pump control system, and prevent electromagnetic interference from damaging the system. The current sensor can monitor the current usage of the fuel pump in real time. These data can help the microcontroller N32G435 to adjust the operating status of the fuel pump more accurately. In the event of abnormal current, the current sensor can immediately detect it and send a signal to the microcontroller N32G435, and take corresponding measures to protect the circuit from damage.

[0012] The above-mentioned fuel pump control module can be further configured as follows: one end of the EMC filter is electrically connected to a power supply, one end of the power supply is connected to the single-chip computer N32G435 to provide a stable current, and the other end of the power supply is electrically connected to the half-bridge drive circuit to provide current.

[0013] By adopting the above technical solution, the power supply provides stable current to the microcontroller N32G435 and the half-bridge drive circuit, which can ensure that these key components work under ideal voltage and current conditions, thereby improving the performance stability of the fuel pump control system. The use of EMC filters can effectively suppress electromagnetic interference, ensure the cleanliness of the power supply line, and reduce the potential impact of electromagnetic interference on the fuel pump control system.

[0014] The above-mentioned fuel pump control module may be further configured as follows: a voltage regulating circuit is connected in parallel between the fuel pump relay and the EMC.

[0015] By adopting the above technical scheme, the voltage regulation circuit can ensure the stability of the power supply and prevent the adverse effects of voltage fluctuations on the fuel pump control system, thereby improving the overall performance of the system, preventing power anomalies from causing damage to the system, and improving the reliability and durability of the entire fuel pump control system. The stable power supply can improve the working efficiency of the fuel pump and ensure that it can provide appropriate fuel pressure and flow under different working conditions, thereby improving the combustion efficiency and overall performance of the engine.

[0016] The above-mentioned fuel pump control module can be further configured as follows: the voltage regulation circuit includes a first voltage regulator and a second voltage regulator connected in parallel between the fuel pump relay and the EMC filter, the first voltage regulator input end is connected in parallel with a filter capacitor C1, a filter capacitor C2 and a fixed capacitor C3, a voltage stabilizing diode D1 is electrically connected between the filter capacitor C1 and the filter capacitor C2, the first voltage regulator output end is connected in parallel with a filter capacitor C4 and fixed capacitors C5 and C6, the fixed capacitor C6 is connected in parallel with a diode D2, the second voltage regulator input end is connected in parallel with the first voltage regulator, the second voltage regulator output end is connected in parallel with a filter capacitor C6, both ends of the filter capacitor C6 are connected in parallel with a plurality of fixed capacitors C7, and both ends of the fixed capacitor C7 are connected in parallel with a voltage stabilizing diode D3.

[0017] By adopting the above technical solution, the use of the first voltage regulator and the second voltage regulator can increase the voltage stabilization capability of the circuit, ensuring that the output voltage can remain stable even when the load changes or the input voltage fluctuates. The use of the voltage stabilizing diodes D1 and D3 and the diode D2 helps to protect the circuit from voltage surges and reverse voltages, thereby improving the reliability and safety of the circuit. The filter capacitors C1, C2, C4, and C6 can effectively filter spikes and noise in the input and output voltages, thereby providing a smoother voltage output. The parallel use of fixed capacitors C3, C5, C6, and C7 helps to further stabilize the voltage, reduce voltage fluctuations, and provide additional filtering functions.

[0018] The above-mentioned fuel pump control module can be further configured as follows: the CAN transceiver circuit includes a CAN transceiver electrically connected to the single-chip microcomputer N32G435, a resistor R1 and a resistor R2 are connected in parallel between the output end of the CAN transceiver and the single-chip microcomputer N32G435, a resistor R3 is connected in series between the resistor R2 and the CAN transceiver, the output end of the CAN transceiver is connected to the single-chip microcomputer N32G435, the CAN transceiver and the single-chip microcomputer N32G435 are connected in series with a resistor R4, the output end of the CAN transceiver is also connected in parallel with a resistor R5, a plurality of overvoltage protection diodes U1 are connected in parallel at both ends of the resistor R5, a common-mode inductor L1 is connected in parallel at both ends of the overvoltage protection diode U1, the output end of the common-mode inductor L1 is connected to a pressure sensor, a resistor R6, a fixed capacitor C8 and a voltage regulator diode D4 are also connected in parallel at the input end of the pressure sensor, and a resistor R9 is also connected in series between the voltage regulator diode D4 and the pressure sensor.

[0019] By adopting the above technical solution, by connecting resistors R1 and R2 in parallel between the output of the CAN transceiver and the microcontroller N32G435, a more stable current path can be provided, thereby reducing signal interference. The layout of resistors R4, R5, and the overvoltage protection diode U1 helps to improve signal integrity and reduce noise and interference during data transmission. The use of common-mode inductor L1 helps to filter common-mode noise, which is particularly important for the CAN bus in automotive electronic systems because it can keep the signal clear in an environment with strong electromagnetic interference. At the same time, resistors R6, R9, fixed capacitors C8 and Zener diodes D4 connected in parallel at the input of the ECM controller provide additional voltage stability and electromagnetic compatibility for the system.

[0020] The above-mentioned fuel pump control module can be further configured as follows: the half-bridge drive circuit includes a half-drive chip U2 connected to the single-chip microcomputer N32G435, the half-drive chip U2 and the single-chip microcomputer N32G435 are connected in parallel with a resistor R7 and a voltage-stabilizing diode D5, and a number of resistors R8 and a fixed capacitor C9 are also connected in parallel between the half-drive chip U2 and the single-chip microcomputer N32G435, the output of the half-drive chip U2 is connected to a DC motor, the half-drive chip U2 and the DC motor are connected in parallel with a number of fixed capacitors C10, and the half-drive chip U2 includes a driver and a number of FETs.

[0021] By adopting the above technical solution, the half-bridge drive circuit can provide sufficient current and voltage to drive the DC motor, ensuring that the motor can operate efficiently. By connecting the resistor R7 and the voltage-stabilizing diode D5 in parallel between the half-drive chip U2 and the single-chip microcomputer N32G435, the voltage in the circuit can be effectively stabilized, reducing the system instability caused by voltage fluctuations. The voltage-stabilizing diode D5 can play the role of overvoltage protection in the circuit to prevent damage to the circuit elements due to excessive voltage. The resistor R7 plays the role of current limiting to avoid burning the circuit elements due to excessive current. The several resistors R8 and the fixed capacitor C9 connected in parallel between the half-drive chip U2 and the single-chip microcomputer N32G435 can effectively filter and stabilize the signal and reduce noise interference.

[0022] The beneficial effects of the utility model are as follows: the oil pressure sensor FPS can detect the oil pressure of the fuel system in real time, and feed back this information to the single-chip microcomputer N32G435. The PWM pulse level output by the single-chip microcomputer N32G435 can accurately control the speed of the fuel pump motor, thereby realizing accurate control of the fuel delivery amount, and can control the fuel amount of the fuel pump in real time to adjust the fuel pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the module of the utility model;

[0024] Figure 2 is a detailed circuit diagram of the utility model; DETAILED DESCRIPTION

[0025] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention. Example 1

[0026] like Figure 1The utility model provides the following technical solution: a fuel pump control module, including a single-chip microcomputer N32G435, the single-chip microcomputer N32G435 is electrically connected to a DC motor, a CAN transceiver circuit for transmitting data is connected between the input end of the single-chip microcomputer N32G435 and the ECM controller of the fuel vehicle, an oil pressure sensor FPS for detecting real-time oil pressure is electrically connected to the output end of the single-chip microcomputer N32G435, a gateway driver and a half-bridge driver circuit are connected in series between the single-chip microcomputer N32G435 and the DC motor to enable the single-chip microcomputer to output a PWM pulse level to control the speed of the fuel pump motor, the oil pressure of the fuel system can be detected in real time through the oil pressure sensor FPS and the ECM controller, and this information is fed back to the single-chip microcomputer N32G435, the PWM (pulse width modulation) pulse level output by the single-chip microcomputer N32G435 can accurately control the speed of the DC motor, thereby realizing accurate control of the fuel delivery amount, and can control the fuel amount of the fuel pump in real time to adjust the fuel pressure , ensuring that the oil pressure is stable within the ideal range, ensuring the stability of the internal pressure of the fuel pump, and improving safety during driving. A voltage sensor that can monitor the voltage in real time is connected in series between the oil pressure sensor FPS and the single-chip microcomputer N32G435. A protection circuit is also provided between the voltage sensor and the single-chip microcomputer N32G435. One end of the protection circuit is connected to the voltage sensor and the other end is connected to the single-chip microcomputer N32G435. The protection circuit is enabled when the voltage sensor detects an abnormality. The voltage sensor can monitor the voltage of the circuit in real time. When an abnormal voltage is detected, the protection circuit will be enabled immediately to protect the single-chip microcomputer N32G435 from damage, which helps to improve the reliability and durability of the entire fuel pump control module. The voltage sensor can provide real-time feedback on voltage abnormalities, helping maintenance personnel to quickly locate the problem and simplify the fault diagnosis process. The protection circuit can ensure that the performance of the fuel pump control module is fully utilized within the normal voltage range to avoid safety problems caused by voltage problems. Example 2

[0027] like Figure 1A fuel pump control module is shown, wherein an ECM controller is electrically connected to a fuel pump relay, an output end of the fuel pump relay is electrically connected to an EMC filter, an output end of the EMC filter is connected to a current sensor, and the current sensor is electrically connected to a single-chip microcomputer N32G435. The single-chip microcomputer N32G435 and the half-bridge drive circuit are provided with a stable current through a power supply, which can ensure that these key components work under ideal voltage and current conditions, thereby improving the performance stability of the fuel pump control system. The use of the EMC filter can effectively suppress electromagnetic interference, ensure the cleanliness of the power supply line, and reduce the potential impact of electromagnetic interference on the fuel pump control system. A voltage regulation circuit is connected in parallel between the fuel pump relay and the EMC filter. The voltage regulation circuit can ensure the stability of the power supply and prevent the adverse effects of voltage fluctuations on the fuel pump control system, thereby improving the overall performance of the system, preventing power supply abnormalities from causing damage to the system, and improving the reliability and durability of the entire fuel pump control system. A stable power supply can improve the working efficiency of the fuel pump and ensure that it can provide appropriate fuel pressure and flow under different working conditions, thereby improving the combustion efficiency and overall performance of the engine.

[0028] The beneficial effects of the utility model are as follows: the oil pressure sensor FPS can detect the oil pressure of the fuel system in real time, and feed back this information to the single-chip microcomputer N32G435. The PWM pulse level output by the single-chip microcomputer N32G435 can accurately control the speed of the fuel pump motor, thereby realizing accurate control of the fuel delivery amount, and can control the fuel amount of the fuel pump in real time to adjust the fuel pressure.

Claims

1. A fuel pump control module, comprising a single chip microcomputer N32G435, wherein the single chip microcomputer N32G435 is electrically connected to a DC motor, characterized in that: The input end of the single-chip microcomputer N32G435 is electrically connected to the ECM controller of the fuel vehicle, and a CAN transceiver circuit for transmitting data is connected between the input end of the single-chip microcomputer N32G435 and the ECM controller of the fuel vehicle. The output end of the single-chip microcomputer N32G435 is electrically connected to an oil pressure sensor FPS for detecting real-time oil pressure. The single-chip microcomputer N32G435 and the DC motor are connected by setting a half-bridge drive circuit to output a PWM pulse level to control the speed of the DC motor.

2. A fuel pump control module according to claim 1, characterized in that: A voltage sensor capable of real-time voltage monitoring is connected in series between the oil pressure sensor FPS and the single-chip microcomputer N32G435. A protection circuit is also provided between the voltage sensor and the single-chip microcomputer N32G435. One end of the protection circuit is connected to the voltage sensor and the other end is connected to the single-chip microcomputer N32G435. The protection circuit is enabled when the voltage sensor detects an abnormality.

3. A fuel pump control module according to claim 1, characterized in that: The ECM controller is electrically connected to a fuel pump relay, an output end of the fuel pump relay is electrically connected to an EMC filter, an output end of the EMC filter is connected to a current sensor, and the current sensor is electrically connected to the single-chip computer N32G435.

4. A fuel pump control module according to claim 3, characterized in that: One end of the EMC filter is electrically connected to a power supply, one end of the power supply is connected to the single-chip computer N32G435 to provide a stable current, and the other end of the power supply is electrically connected to the half-bridge drive circuit to provide current.

5. A fuel pump control module according to claim 3, characterized in that: A voltage regulating circuit is connected in parallel between the fuel pump relay and the EMC filter.

6. A fuel pump control module according to claim 5, characterized in that: The voltage regulating circuit includes a first voltage regulator and a second voltage regulator connected in parallel between the fuel pump relay and the EMC filter, a filter capacitor C1, a filter capacitor C2 and a fixed capacitor C3 are connected in parallel to the input end of the first voltage regulator, a voltage stabilizing diode D1 is electrically connected between the filter capacitor C1 and the filter capacitor C2, a filter capacitor C4 and fixed capacitors C5 and C6 are connected in parallel to the output end of the first voltage regulator, a diode D2 is connected in parallel to the fixed capacitor C6, the input end of the second voltage regulator is connected in parallel to the first voltage regulator, the output end of the second voltage regulator is connected in parallel to the filter capacitor C6, a plurality of fixed capacitors C7 are connected in parallel to both ends of the filter capacitor C6, and a voltage stabilizing diode D3 is connected in parallel to both ends of the fixed capacitor C7.

7. A fuel pump control module according to claim 1, characterized in that: The CAN transceiver circuit includes a CAN transceiver electrically connected to the single-chip computer N32G435, a resistor R1 and a resistor R2 are connected in parallel between the output end of the CAN transceiver and the single-chip computer N32G435, a resistor R3 is connected in series between the resistor R2 and the CAN transceiver, the output end of the CAN transceiver is connected to the single-chip computer N32G435, the CAN transceiver and the single-chip computer N32G435 are connected in series with a resistor R4, the output end of the CAN transceiver is also connected in parallel with a resistor R5, several overvoltage protection diodes U1 are connected in parallel at both ends of the resistor R5, a common-mode inductor L1 is connected in parallel at both ends of the overvoltage protection diode U1, the output end of the common-mode inductor L1 is connected to a voltage sensor, a resistor R6, a fixed capacitor C8 and a voltage-stabilizing diode D4 are also connected in parallel at the input end of the voltage sensor, and a resistor R9 is also connected in series between the voltage-stabilizing diode D4 and the voltage sensor.

8. A fuel pump control module according to claim 1, characterized in that: The half-bridge drive circuit includes a half-drive chip U2 connected to the single-chip microcomputer N32G435, wherein a resistor R7 and a voltage-stabilizing diode D5 are connected in parallel to the half-drive chip U2 and the single-chip microcomputer N32G435, and a number of resistors R8 and a fixed capacitor C9 are also connected in parallel between the half-drive chip U2 and the single-chip microcomputer N32G435. The output of the half-drive chip U2 is connected to a DC motor, and a number of fixed capacitors C10 are connected in parallel to the half-drive chip U2 and the DC motor. The half-drive chip U2 includes a driver and a number of FETs.

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