A fuel tank conversion valve control circuit

Abstract

The utility model provides a fuel tank conversion valve control circuit, which relates to the technical field of fuel tank conversion valve control. The first component group of the first terminal and the second component group of the second terminal are arranged in mirror symmetry, and a rotating shaft synchronous control switch is arranged. The motor drives the sliding switch to realize the path switching in the selection circuit and perform the corresponding fuel tank conversion valve function operation. When the first terminal of the circuit is connected to the positive pole and the second terminal is connected to the negative pole or the first terminal is connected to the negative pole and the second terminal is connected to the positive pole, the rotating shaft synchronous control switch will be started, and the brush on the sliding switch and the rotating shaft of the motor are synchronously linked, so that the motor can be driven to move upward or downward to realize the corresponding function of the fuel tank conversion valve, improve the economy and safety, and greatly simplify the circuit.

Description

Technical Field

[0001] The utility model relates to the technical field of oil tank conversion valve control, in particular to an oil tank conversion valve control circuit. Background Art

[0002] In the prior art, commercial vehicles, especially trucks, have two fuel tanks, a main tank and an auxiliary tank. During driving, the engine first consumes the fuel in the main tank. When the fuel in the main tank is insufficient, the driver switches to the auxiliary tank by controlling the switch valve, and uses the auxiliary tank to provide fuel for the engine, which enables quick switching of the fuel supply tank without stopping, ensures the normal driving of the commercial vehicle, and improves the safety of the driver, especially on highways. The existing switching valve control circuit uses a relay to control the motor for conversion. The utility model uses a CMOS power tube to replace the relay to realize the control of the motor, and realizes contactless control of the motor. Utility Model Content

[0003] The main purpose of the utility model is to provide a fuel tank conversion valve control circuit to solve the technical problems of relay contact adhesion and poor vibration resistance in the current fuel tank conversion valve rotary valve control circuit.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a fuel tank conversion valve control circuit, comprising:

[0005] A first terminal and a second terminal are connected to both ends of the power supply respectively, a first component group of the first terminal and a second component group of the second terminal are arranged in mirror symmetry, a shaft synchronization control switch is arranged between the first component group and the second component group, and the shaft synchronization control switch includes a sliding switch and a motor;

[0006] The first device group includes one end of a resistor R1, one end of a resistor R2, an anode of a voltage stabilizing diode D3 and a source of a VMOS tube Q1 respectively connected to the first wiring terminal;

[0007] The other end of the resistor R1 is connected to the static contact piece A of the slide switch, and the other end of the resistor R2 is respectively connected to the cathode of the diode D1, the cathode of the voltage-stabilizing diode D3 and the gate of the VMOS tube Q1, and the drain of the VMOS tube Q1 is connected to one end of the motor;

[0008] When the first terminal is connected to the positive pole and the second terminal is connected to the negative pole, or when the first terminal is connected to the negative pole and the second terminal is connected to the positive pole, the shaft synchronization control switch is started, the brush on the sliding switch is synchronously linked with the shaft of the motor, the motor rotates clockwise or counterclockwise, and at the same time drives the brush to move downward or upward, realizing the corresponding tank conversion valve function.

[0009] In a preferred embodiment, the second device group includes one end of a resistor R3, one end of a resistor R4, an anode of a voltage stabilizing diode D4 and a source of a VMOS tube Q2, which are respectively connected to the second wiring terminal;

[0010] The other end of the resistor R3 is connected to the static contact piece C of the slide switch, the other end of the resistor R4 is respectively connected to the cathode of the diode D2, the cathode of the voltage stabilizing diode D4 and the gate of the VMOS tube Q2, and the drain of the VMOS tube Q2 is connected to the other end of the motor;

[0011] The anode of the diode D1 and the anode of the diode D2 are connected and then connected to the stationary contact piece B of the slide switch.

[0012] In a preferred embodiment, a series circuit formed by connecting a capacitor C and a resistor R5 is connected at both ends of the motor.

[0013] The utility model provides a fuel tank conversion valve control circuit, wherein the first device group of the first terminal and the second device group of the first terminal are arranged in mirror symmetry, which helps to balance the working performance of the circuit and ensure the stability of the system; a rotating shaft synchronous control switch is arranged, and the motor drives the sliding switch to realize the path switching in the selection circuit and perform the corresponding fuel tank conversion valve function operation. When the first terminal of the circuit is connected to the positive pole and the second terminal is connected to the negative pole, or the second terminal of the circuit is connected to the positive pole and the first terminal is connected to the negative pole, the rotating shaft synchronous control switch will be started. The brush on the sliding switch and the rotating shaft of the motor are synchronously linked, and the motor can be driven to move upward or downward to realize the corresponding functions of the fuel tank conversion valve, including the conversion of the fluid inside the fuel tank and the opening or closing of the valve. This embodiment uses simple circuits and devices, designs the sliding switch and the motor to be synchronously linked, and uses the drive of the motor to realize the valve control, ensuring the reliable operation of the fuel tank conversion valve, solving the current problem of abnormal operation of the engine due to the failure of the fuel tank conversion valve to rotate in place, improving the economy and safety, and greatly simplifying the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 It is the circuit principle diagram of the utility model;

[0016] Figure 2 This is the current trend diagram of the motor in the utility model;

[0017] Figure 3 This utility model Figure 2 Schematic diagram of the brush position when the motor stops rotating;

[0018] Figure 4 This is a reverse current trend diagram of the motor of the utility model;

[0019] Figure 5 This utility model Figure 4 Schematic diagram of the brush position when the motor stops rotating;

[0020] Figure 6 This is a schematic diagram of the rotary sliding switch of the utility model;

[0021] Figure 7 This is a schematic diagram of the linear movable sliding switch of the utility model;

[0022] Figure 8 This is a relationship diagram between the working oil tank and the electrode status of the utility model. DETAILED DESCRIPTION

[0023] Example 1

[0024] like Figure 1-8 As shown, a fuel tank conversion valve control circuit includes:

[0025] The first terminal and the second terminal at both ends of the power supply are connected respectively, the first component group of the first terminal and the second component group of the second terminal are arranged in mirror symmetry, and a shaft synchronization control switch is arranged between the first component group and the second component group, and the shaft synchronization control switch includes a sliding switch and a motor M.

[0026] The first device group includes one end of a resistor R1, one end of a resistor R2, an anode of a voltage stabilizing diode D3 and a source of a VMOS tube Q1 respectively connected to the first wiring terminal;

[0027] The other end of the resistor R1 is connected to the static contact piece A of the slide switch, the other end of the resistor R2 is respectively connected to the cathode of the diode D1, the cathode of the voltage regulator diode D3 and the gate of the VMOS tube Q1, and the drain of the VMOS tube Q1 is connected to one end of the motor.

[0028] When the first terminal is connected to the positive pole and the second terminal is connected to the negative pole, or when the first terminal is connected to the negative pole and the second terminal is connected to the positive pole, the shaft synchronization control switch is started, and the brush on the sliding switch is synchronously linked with the shaft of the motor M. The motor M rotates clockwise or counterclockwise to drive the brush to move downward or upward, thereby realizing the corresponding tank conversion valve function.

[0029] like Figure 1As shown, the first device group of the first terminal and the second device group of the second terminal are arranged in mirror symmetry, which ensures the smooth control of the motor to rotate clockwise or counterclockwise; a shaft synchronous control switch is provided, and the motor M drives the sliding switch to realize the path switching in the selection circuit and perform the corresponding operation of the fuel tank conversion valve function. When the first terminal of the circuit is connected to the positive pole and the second terminal is connected to the negative pole (or vice versa), the shaft synchronous control switch will be started. The brush on the sliding switch and the shaft of the motor M are synchronously linked, and the motor M can be driven to move upward or downward to realize the corresponding functions of the fuel tank conversion valve, including the conversion of the fluid inside the fuel tank and the opening or closing of the valve. This embodiment uses simple circuits and devices, designs the sliding switch and the motor to be synchronously linked, and uses the drive of the motor to realize the valve control, ensuring the reliable operation of the fuel tank conversion valve, solving the current problem of abnormal operation of the engine due to the failure of the fuel tank conversion valve to rotate in place, improving the economy and safety, and greatly simplifying the circuit.

[0030] In this embodiment, the first wiring terminal and the second wiring terminal are wiring terminal 1 and wiring terminal 2 respectively.

[0031] In a preferred embodiment, the second device group includes one end of a resistor R3 and one end of a resistor R4, an anode of a voltage regulator diode D4 and a source of a VMOS tube Q2, which are respectively connected to the connection terminal 2.

[0032] The other end of the resistor R3 is connected to the static contact piece C of the slide switch, the other end of the resistor R4 is respectively connected to the cathode of the diode D2, the cathode of the voltage regulator diode D4 and the gate of the VMOS tube Q2, and the drain of the VMOS tube Q2 is connected to the other end of the motor M.

[0033] The anode of the diode D1 and the anode of the diode D2 are connected and then connected to the stationary contact piece B of the slide switch.

[0034] In this embodiment, the polarity reversal of the power supply at terminal 1 and terminal 2 can be used to control the motor to achieve forward and reverse rotation, that is, clockwise or counterclockwise rotation, to achieve switching of the main and auxiliary tank channels of the tank conversion valve or control the opening or closing of the stop valve.

[0035] like Figure 2 As shown, the working principle of this embodiment is described in detail.

[0036] (1) When terminal 1 is connected to the positive pole of the power supply and terminal 2 is connected to the negative pole of the power supply, Figure 2 As shown:

[0037] Current Through resistor R1 → static contact piece A of sliding switch → brush → static contact piece B of sliding switch → diode D2 → resistor R4 → terminal 2 → to the negative pole of battery; the voltage drop on resistor R4 is applied to the gate of VMOS tube Q2 to turn on VMOS tube Q2, then the current Through the parasitic diode of VMOS tube Q1 → motor M → VMOS tube Q2 → to terminal 2.

[0038] The motor M rotates clockwise when it is powered, and drives the brush downward. The function of the voltage regulator D4 is to limit the maximum voltage value applied to the gate of Q2, ensure voltage stability, and prevent high voltage from damaging the gate of Q2.

[0039] (2) If Figure 3 As shown in the figure, when the brush slides to the lower end of the slide switch, the static contact piece A and the static contact piece B of the slide switch are disconnected. , VMOS tube Q2 is turned off, , the motor M stops rotating.

[0040] When the voltage polarity of terminal 1 and terminal 2 is reversed, the flow direction of each current in the circuit is reversed, and the motor M rotates counterclockwise.

[0041] (3) When terminal 2 is connected to the positive pole of the battery and terminal 1 is connected to the negative pole of the power supply, Figure 4 As shown:

[0042] Current From resistor R3 → stationary contact piece C → brush → stationary contact piece B → diode D1 → resistor R2 → terminal 1 → to the negative electrode of the battery; the voltage drop on resistor R2 is applied to the gate of VMOS tube Q1 to turn on Q1, then the current Through the parasitic diode of Q2 → motor M → Q1 → to terminal 1; the motor is energized to rotate counterclockwise, while driving the brush to move upward. The function of the voltage regulator D3 is to limit the maximum voltage value applied to the gate of Q1, ensure voltage stability, and prevent high voltage from damaging the gate of Q1.

[0043] (4) If Figure 5 As shown in FIG. 1 , when the brush slides to the upper end of the slide switch, the brush moves to the position where the static contact piece C of the slide switch is disconnected from the static contact piece B. , VMOS tube Q1 is turned off, , the motor M stops rotating.

[0044] like Figure 6-7 As shown, the sliding switch in this embodiment can be a rotary sliding switch or a linear sliding switch.

[0045] like Figure 8As shown, the working oil tank and the static contact piece state relationship diagram. A, B, C are static contacts, and the brushes are linked to the motor M. Normally, the brushes connect AB or BC; if the valve is in the main oil tank position in the initial state, the brushes connect the AB electrodes. If the switch is pressed to switch the conversion valve, the motor M rotates and drives the brushes to connect the ABC electrodes. When the brush rotates to the state disconnected from the A electrode, the motor M stops rotating, and the brushes are connected to the BC electrode. The arc length of the rotary sliding switch electrode determines the working angle of the motor M. From Figure 8 It can be seen that there is a relationship between the terminal voltage polarity, the working oil tank and the static contact piece.

[0046] In a preferred embodiment, two ends of the motor M are connected to a series circuit formed by connecting a capacitor C and a resistor R5.

[0047] The function of capacitor C and resistor R5 is to absorb the electric spark interference generated when the motor M rotates, reduce the commutator ablation of the motor M and the electromagnetic interference to the environment, so as to protect the motor M.

[0048] In use, when the power is connected to the terminal 1 and the terminal 2 in the circuit, the shaft synchronous control switch is started. The brush on the sliding switch in the shaft synchronous control switch is synchronously linked with the shaft of the motor M. The motor M rotates forward or reversely, driving the brush to move upward or downward synchronously, realizing the function of the oil tank conversion valve, including the conversion of the fluid inside the oil tank and the opening or closing of the valve. When the static contact piece B rotates to a state disconnected from the static contact piece A or C, the motor M stops rotating, and the valve conversion process ends.

[0049] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A fuel tank switching valve control circuit, characterized in that: include: A first terminal and a second terminal are connected to both ends of the power supply respectively, a first component group of the first terminal and a second component group of the second terminal are arranged in mirror symmetry, a shaft synchronization control switch is arranged between the first component group and the second component group, and the shaft synchronization control switch includes a sliding switch and a motor; The first device group includes one end of a resistor R1, one end of a resistor R2, an anode of a voltage stabilizing diode D3 and a source of a VMOS tube Q1 respectively connected to the first wiring terminal; The other end of the resistor R1 is connected to the static contact piece A of the slide switch, and the other end of the resistor R2 is respectively connected to the cathode of the diode D1, the cathode of the voltage-stabilizing diode D3 and the gate of the VMOS tube Q1, and the drain of the VMOS tube Q1 is connected to one end of the motor; When the first terminal is connected to the positive pole and the second terminal is connected to the negative pole, or when the first terminal is connected to the negative pole and the second terminal is connected to the positive pole, the shaft synchronization control switch is started, the brush on the sliding switch is synchronously linked with the shaft of the motor, the motor rotates clockwise or counterclockwise, and at the same time drives the brush to move downward or upward, realizing the corresponding tank conversion valve function.

2. The fuel tank switching valve control circuit according to claim 1, characterized in that: The second device group includes one end of a resistor R3, one end of a resistor R4, an anode of a voltage stabilizing diode D4 and a source of a VMOS tube Q2 respectively connected to the second wiring terminal; The other end of the resistor R3 is connected to the static contact piece C of the slide switch, the other end of the resistor R4 is respectively connected to the cathode of the diode D2, the cathode of the voltage stabilizing diode D4 and the gate of the VMOS tube Q2, and the drain of the VMOS tube Q2 is connected to the other end of the motor; The anode of the diode D1 and the anode of the diode D2 are connected and then connected to the stationary contact piece B of the slide switch.

3. The fuel tank switching valve control circuit according to claim 1, characterized in that: A series circuit formed by connecting a capacitor C and a resistor R5 is connected at both ends of the motor.

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