KR200366609Y1 - The fuel sender to be used pressure-sensor for the vehiecle - Google Patents

Abstract

The present invention relates to a fuel supply device for a vehicle, and more particularly, a fuel tank which can contain fuel of a vehicle, a fuel gauge structure composed of a lower surface from an upper portion of the fuel tank, and a lower portion of the fuel gauge structure. And a pressure sensor in contact with the bottom surface of the fuel tank, a microcomputer for controlling a signal output from the pressure sensor, and a display unit for displaying a signal output from the microcomputer. .

Description

Fuel feeder for vehicle using pressure sensor {The fuel sender to be used pressure-sensor for the vehiecle}

The present invention relates to a fuel supply device for a vehicle, and more particularly, a pressure sensor is configured inside a vehicle fuel tank so that the pressure in the fuel tank applied to the pressure sensor is input to the microcomputer and converted into a digital signal to be displayed on the display unit. It relates to a vehicle fuel supply device using a sensor.

In general, the configuration showing the fuel remaining amount of the vehicle is a float assembly having a float floating by the fuel in the fuel tank and a variable variable that its resistance value is changed by the movement of the float assembly and the float having the operating rod for transmitting the float movement of the float A guide is configured to indicate the residual amount of fuel by displacing with the deformation of the nichrome wire and the bimetal and the bimetal that are deformed by the heat of the nichrome wire, and the heat level of the fuel being varied by the change of the resistance and the variable resistance. The floats floating due to the change and the float arm rotated about the axis by the float and the structure of the printed resistive substrate in contact with the float arm linked with the float arm are summarized in several ways.

However, since the vehicle fuel supply device having the above structure is measured through a contact point due to mechanical friction, the vehicle splashes due to irregularities of the road surface while the vehicle is running, so problems of measurement failure and shortening of life due to abrasion and road surface slope are sudden. When the vehicle is tilted or the vehicle is inclined, the oil level is inclined to indicate an incorrect amount of fuel. In addition, the raw materials of the resistor plate as described above are all dependent on imports.

The present invention has been devised to solve the above problems, and the fuel tank that can hold the fuel of the vehicle by measuring the amount of fuel by configuring a pressure sensor in the lower part of the fuel tank, rather than floating the float on the surface of the fuel tank and A fuel supply device for a vehicle comprising a pressure sensor configured at a lower portion of the fuel tank, a microcomputer for controlling a signal output from the pressure sensor, and a display unit for displaying a signal output from the microcomputer, and a pressure than a conventional float floating method. Fuel pressure can be calculated by digitally measuring the pressure measured by the sensor inside the microcomputer, enabling accurate fuel measurement.

1 is an overall configuration of the present invention.

Figure 2 is an enlarged view of a portion A showing a pressure sensor of the present invention.

3 is a circuit diagram showing an induction electric machine of the present invention.

4 is a circuit diagram showing a frequency voltage conversion of the present invention.

Figure 4a is a circuit diagram showing a voltage conversion of another frequency band of the present invention.

5 is a circuit diagram showing an analog-to-digital converter of the present invention.

Figure 6 is a block diagram showing the configuration of a conventional general fuel supply device.

7 is a view showing another embodiment of the present invention.

<Description of Signs of Major Parts of Drawings>

1. Fuel tank 1a. home

2. Fuel gauge structure 3. Pressure sensor

3a. Main body 3b. Inlet

3c. Diaphragm 3d. core

3e. Spring 3f. coil

3 g. Capacitor 4. Micom

5. Indicator 11. Fuel Tank

12. Float 13. Float Arm

14. Printed Resistive Board 15. Shaft

The present invention relates to a fuel supply device for a vehicle using a pressure sensor, and more particularly, a fuel tank that can contain fuel of a vehicle, a fuel gauge structure composed of an upper surface and a lower surface of the fuel tank, and the fuel gauge Vehicle fuel supply using a pressure sensor configured at the bottom of the structure and in contact with the bottom surface of the fuel tank, a microcomputer for controlling the signal output from the pressure sensor, and a display unit for displaying the signal output from the microcomputer Relates to a device.

Hereinafter, with reference to the fuel supply device for a vehicle having a pressure sensor according to the present invention will be described in detail.

1 is a view showing the overall configuration of the present invention, the fuel gauge structure (2) consisting of a temperature sensor and a pressure regulator in the upper portion of the fuel tank (1) capable of storing the fuel vertically toward the lower surface It is inserted, the lower portion of the fuel gauge structure (2) has a pressure sensor (3) is configured to measure the pressure by the inflow of fuel. In addition, the pressure measured by the pressure sensor 3 is controlled by the microcomputer 4 as an electrical signal and displayed as a digital signal on the display unit 5 by the signal value output from the microcomputer 4 so that It is a structure that can accurately judge the quantity.

2 is an enlarged view of a portion A showing the pressure sensor of the present invention, the pressure sensor 3 according to the present invention has a main body 3a having an inlet port 3b through which fuel is introduced, and the main body 3a of the main body 3a. A diaphragm 3c formed therein and transmitting the pressure according to the oil level, and a magnetic core 3d configured below the diaphragm 3c to move up and down integrally with the diaphragm 3c, and the A magnetic field generated by the vertical movement of the core 3d and a spring 3e mounted on the lower part of the core 3d to restore the diaphragm 3c when there is no pressure to press the diaphragm 3c. And a coil 3f surrounding the outside of the core to induce electricity by the capacitor, and a capacitor 3g for storing electricity generated by the coil 3f.

In the above sensor, the formula pA = kh, ur = ur (h) is established by the proposition that the force due to the pressure is equal to the force applied to the spring, and L = N ² * R * uo * ur [ln (2R / The oscillation L value changes according to the pressure p according to the above formula as in a) -2.0]. Where h = diaphragm height at fixed point, A = area of hydraulic part of diaphragm, K = spring constant, P = water pressure in diaphragm, N = number of coils wound, R = coil radius, a = coil diameter / 2, ur = medium Represents the relative permittivity, uo = absolute permittivity of air, and L = induction coefficient.

3 is a circuit diagram showing the induction electricity of the present invention, it can be seen that the electricity is induced by the configuration of the circuit shown in the figure, the oscillation frequency (f) is

The L value changed by the formula is determined by the formula, and the oscillation frequency is determined and the pressure applied to the pressure sensor can be known from the formula. In the above formula, C = conductivity coefficient.

4 and 4a is a view showing a frequency voltage conversion circuit of the present invention, Figure 3 is when the frequency of 10Khz input from the LM331, Figure 4 is a diagram showing the configuration of the circuit diagram when the frequency of 100Khz input from the AD650 It has the same process as the configuration of the circuit diagram.

FIG. 5 is a circuit diagram illustrating an analog / digital converter. The circuit diagram shown in FIGS. 4, 4A, and 5 is a circuit diagram of changing a value input from a pressure sensor into a voltage value.

FIG. 6 is a block diagram showing the structure of a conventional fuel supply device. In the fuel tank 11 capable of storing fuel, the float 12 floats due to the change in the water level of the fuel, and the float 12. Thereby, the float arm 13 which is rotated and interlocked about the shaft 15, and the printed resistance substrate 14 which is in contact with the float arm 13 which is interlocked with the said float arm 13 are comprised.

7 is a view showing another embodiment of the present invention, the pressure sensor (3) configured in the lower portion of the fuel gauge structure (2) in the groove (1a) formed on the bottom surface of the fuel tank (1) is seated in the groove As a structure, if the fuel remaining in the remaining amount than the inlet (3b) of the pressure sensor (3) in the fuel tank (1) shown in FIG.

As described above, the fuel supply device for a vehicle according to the present invention can replace the resistance plate that was dependent on the total amount, thereby preventing the outflow of enormous foreign currency, and the fuel sender currently being used or being developed according to the technology transfer to Japan The company pays royalties, which saves a lot of losses at the national level. By not using a resistor plate, the use of lead regulates the use of eco-friendly projects.

Claims (2)

In the vehicle fuel supply device, A fuel tank configured to contain fuel of the vehicle, a fuel gauge structure including an upper surface and a lower surface of the fuel tank, a pressure sensor configured under the fuel gauge structure, and a signal output from the pressure sensor Fuel supply device for a vehicle using a pressure sensor comprising a microcomputer for controlling and a display unit for displaying the signal output from the microcomputer. The method of claim 1, The pressure sensor includes a main body having an inlet through which fuel is introduced, a diaphragm formed inside the main body to transmit the pressure according to the level, and a lower part of the diaphragm, which moves up and down integrally with the diaphragm. A core having a magnetic body, a spring mounted below the core to restore the diaphragm when there is no pressure to press the diaphragm, and the core to induce electricity by a magnetic field generated by the vertical motion of the core with the magnetic body A fuel supply device for a vehicle using a pressure sensor, characterized in that it comprises a coil surrounding the outside of the condenser, and a capacitor for storing electricity generated from the coil.