CN102390255A - Intelligent fuel tank with adjustable volume - Google Patents

Abstract

The invention discloses an intelligent fuel tank with adjustable volume. A fuel tank exhaust pipe (2) is composed of a fixed pipe (5) and a sliding pipe (6). The fixed pipe (5) is fixedly connected with a tank body (4). The lower end of the sliding pipe (6) extends into the tank body (4); and the upper end of the sliding pipe (6) extends into the fixed pipe (5) and is connected with an output shaft of a motor (7). The motor (7) is controlled by a vehicular computer ECU (10). The vehicular computer ECU (10) is connected with an environment temperature sensor (12) through a signal processing circuit (11). The invention can adjust the position of the lower port of the sliding pipe in the fuel tank according to external temperature condition so as to automatically adjust the maximal injection amount of the fuel tank, therefore, the fuel tank can adapt with kinds of temperature environments in different seasons and areas; and the fuel oil overflow caused by high-temperature expansion can be avoided when more fuel oil is injected once by volume of the fuel tank at the maximal limit.

Description

Smart fuel tank with adjustable capacity

technical field

The invention relates to an automobile component, in particular to an intelligent fuel tank with adjustable capacity.

Background technique

At present, the fuel tank of passenger cars generally depends on the height of the air hole of the exhaust pipe in the fuel tank to control the fuel filling amount. When refueling, the vent valve of the fuel tank is closed, and the air in the fuel tank is discharged through the exhaust pipe. When the fuel touches the lower end of the exhaust pipe, the lower port of the exhaust pipe is below the oil level, and the air in the fuel tank cannot be normal This will form an air-tight space above the fuel tank, and generate pressure so that the fuel tank cannot continue to be filled with fuel. At this time, the fuel filling volume has reached the designed maximum fuel filling volume. The reason for controlling the amount of fuel filling is to ensure that the fuel will not overflow from the fuel tank after it is heated and expanded. The height of the traditional fuel tank will not change after the design is finalized, so the capacity of the fuel tank has been uniquely determined, and the capacity of the fuel tank is generally taken as a safe value at normal temperature, so vehicles used in high-temperature areas may still have oil spills, but In the low temperature area, the volume of the fuel tank is not fully utilized to store enough fuel. Therefore, conventional fuel tanks cannot adapt to various temperature environments.

Contents of the invention

The technical problem to be solved by the present invention is to provide an intelligent fuel tank capable of changing the maximum fuel filling amount according to the change of the ambient temperature.

The technical scheme of the present invention is as follows: an intelligent fuel tank with adjustable capacity has a tank body (4), on which a fuel tank filling port (1), a fuel tank exhaust pipe (2) and a fuel tank Vent hole (3), the fuel tank exhaust pipe (2) is composed of a fixed pipe (5) and a sliding pipe (6), wherein the fixed pipe (5) is fixedly connected with the tank (4), and the sliding pipe ( The lower end of 6) is lower than the lower end surface of the fixed pipe (5), and the lower end of the sliding pipe (6) extends into the box (4), and the upper end of the sliding pipe (6) extends into the fixed pipe (5), And connected with the output shaft of the motor (7), the motor (7) is controlled by the vehicle-mounted computer ECU (10), the vehicle-mounted computer ECU (10) is connected with the ambient temperature sensor (12) through the signal processing circuit (11) .

The invention adopts an intelligent control system. When the ambient temperature sensor in the vehicle detects that the external temperature is high, the information is sent to the on-board computer ECU through the signal processing circuit, and the ECU then sends instructions to the motor according to the temperature value to make the sliding tube move down. , the lower port of the sliding tube is lowered to a lower position, so that a larger sealed space can be formed in the tank when fuel is filled, and the actual capacity of the fuel tank is reduced to ensure that the fuel will not overflow the tank under high temperature expansion; When the ambient temperature sensor detects that the outside temperature is low, the ECU sends instructions to the motor according to the temperature value, controls the motor to run, and moves the sliding tube upward, and the lower port of the sliding tube rises to a higher position to allow fuel filling. Only a small sealed space can be formed in the tank to ensure that the fuel does not overflow, so that the volume of the fuel tank can be used to the maximum and more fuel can be filled at one time.

The lower port of the fixed tube (5) has an inner flange, and the inner edge of the inner flange fits the outer wall of the sliding tube (6), and the upper end of the sliding tube (6) has an outer flange, and the outer edge The outer edge of the flanging is attached to the inner wall of the fixed pipe (5). On the one hand, the above structure can ensure that the sliding tube only moves in the up and down direction, and the friction between the sliding tube and the fixed tube is small, which can enhance the smoothness and reliability of the sliding tube moving up and down relative to the fixed tube. On the other hand, the lower end of the fixed tube The inward flanging of the upper end of the sliding tube is combined with the outer flanging on the upper end of the sliding tube to act as a limiter to prevent the sliding tube from falling off from the fixed tube under abnormal conditions.

The upper end of the sliding tube (6) is connected to the motor (7) through a cable (8), the motor (7) is arranged above the fixed tube (5), and the cable (8) is connected to the fixed tube (5) on the axis. The above structure is not only simple and compact, easy to assemble, but also convenient to obtain materials and low in cost.

A return spring (9) is installed in the fixed tube (5), the upper end of the return spring (9) abuts against the step surface in the fixed tube (5), and the lower end of the return spring (9) contacts the sliding tube (6) The upper end faces are in contact with each other. The return spring is always in a compressed state. When the motor releases the cable and the slide tube moves down, the return spring provides assistance to make the slide tube move down reliably and quickly.

Beneficial effects: the present invention adjusts the position of the lower port of the sliding tube in the fuel tank according to the external temperature, thereby realizing the automatic adjustment of the maximum filling volume of the fuel tank, so that the fuel tank can adapt to various conditions in different seasons and regions. In such a temperature environment, while maximizing the capacity of the fuel tank to fill more fuel at one time, it can prevent the fuel from overflowing due to high temperature expansion.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the assembly of components such as the fixed pipe, the sliding pipe and the motor in the present invention.

Fig. 3 is a circuit block diagram of the present invention.

Detailed ways

The present invention will be further described below in conjunction with drawings and embodiments.

As shown in Fig. 1, Fig. 2 and Fig. 3, the present invention consists of a box body 4, a fuel tank exhaust pipe 2, a motor 7, a cable 8, a return spring 9, an on-board computer ECU10, a signal processing circuit 11 and an ambient temperature sensor 12, etc. constitute. A fuel tank filling port 1 and a fuel tank vent hole 3 are opened on the box body 4, and a fuel tank exhaust pipe 2 is arranged on the box body 4, and the fuel tank filling port 1, the fuel tank vent pipe 2 and the fuel tank vent pipe The setting position of the air hole 3 is the same as that of the prior art, and will not be repeated here. The fuel tank exhaust pipe 2 is composed of a fixed pipe 5 and a sliding pipe 6, both of which are straight-through pipe structures. Wherein, the lower end of the fixed pipe 5 extends into the box body 4 from top to bottom, and the fixed pipe 5 is fixedly connected with the box body 4 . The lower end of the sliding tube 6 is lower than the lower end surface of the fixed tube 5 , and the lower end of the sliding tube 6 also extends into the casing 4 , while the upper end of the sliding tube 6 extends into the fixed tube 5 . The upper end of the sliding tube 6 has an outer edge, and the outer edge of the outer edge fits with the inner wall of the fixed tube 5; The outer walls fit together.

As can be seen from Fig. 1, Fig. 2 and Fig. 3, a back-moving spring 9 is housed in the fixed tube 5, the upper end of the back-moving spring 9 abuts against the step surface in the fixed tube 5, and the lower end of the back-moving spring 9 abuts against the upper end surface of the sliding tube 6 meet each other. A motor 7 is arranged above the fixed tube 5 , the output shaft of the motor 7 is connected with the upper end of the sliding tube 6 through a drag cable 8 , and the drag cable 8 is on the axis of the fixed tube 5 . Described motor 7 is connected with vehicle-mounted computer ECU10 by wire, and the operation of motor 7 is controlled by vehicle-mounted computer ECU10, and this vehicle-mounted computer ECU10 is connected with ambient temperature sensor 12 through signal processing circuit 11, and ambient temperature sensor 12 is arranged on the outside of casing Use the appropriate position on the car. The signal processing circuit 11 adopts a conventional circuit, and the vehicle-mounted computer ECU 10 is a prior art, so the vehicle-mounted computer ECU 10 and the signal processing circuit 11 are not described in detail here.

The working principle of the present invention is as follows:

When the ambient temperature sensor 12 detects that the external temperature is high, the signal processing circuit 11 sends the information to the on-board computer ECU10, and the ECU10 sends instructions to the motor 7 according to the temperature value, controls the operation of the motor 7, and loosens the output shaft of the motor 7 The pull cable 8 and the return spring 9 provide downward power to push the sliding tube 6 down, and the lower port of the sliding tube 6 is lowered to a lower position, so that a larger sealed space can be formed in the tank 4 when fuel is filled. , the actual capacity of the fuel tank is reduced to ensure that the fuel will not overflow the tank under high temperature expansion; when the ambient temperature sensor 12 detects that the external temperature is low, the ECU 10 sends instructions to the motor 7 according to the temperature value, so that the motor 7 The output shaft is running, and the sliding tube 6 is pulled by the cable 8 to overcome the elastic force of the return spring 9 to move upward, and the lower port of the sliding tube 6 rises to a higher position, so that only a small hole can be formed in the tank when fuel is filled. The sealed space where the fuel does not overflow, so that the volume of the fuel tank can be used to the maximum extent and more fuel can be filled at one time.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention. within the scope of protection.

Claims (4)

1. intelligent fuel tank that capacity is adjustable; Have casing (4), on casing (4), be provided with fuel tank filler opening (1), fuel tank freeing pipe (2) and fuel tank air extractor vent (3), it is characterized in that: said fuel tank freeing pipe (2) is made up of stationary pipes (5) and sliding tube (6); Wherein, Stationary pipes (5) is captiveed joint with casing (4), and the lower end of said sliding tube (6) is lower than the lower surface of stationary pipes (5), and the lower end of sliding tube (6) is stretched in the casing (4); The upper end of said sliding tube (6) is stretched in the stationary pipes (5); And be connected with the output shaft of motor (7), said motor (7) is by vehicle-mounted computer ECU (10) control, and this vehicle-mounted computer ECU (10) is connected with environment temperature sensor (12) through signal processing circuit (11).

2. the adjustable intelligent fuel tank of capacity according to claim 1; It is characterized in that: the lower port of said stationary pipes (5) has in-flanges; The outer wall of the inside edge of this in-flanges and sliding tube (6) fits; The upper end of said sliding tube (6) has flanging, and the inwall of the outer edge of this flanging and stationary pipes (5) fits.

3. the adjustable intelligent fuel tank of capacity according to claim 1 and 2; It is characterized in that: the upper end of said sliding tube (6) is connected with the output shaft of motor (7) through drag-line (8); This motor (7) is arranged on the top of stationary pipes (5), and said drag-line (8) is on the axial line of stationary pipes (5).

4. the adjustable intelligent fuel tank of capacity according to claim 3; It is characterized in that: retracing spring (9) is housed in said stationary pipes (5); Step surface butt in upper end of this retracing spring (9) and the stationary pipes (5), the upper surface of the lower end of retracing spring (9) and sliding tube (6) connects.

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