CN112208323B

CN112208323B - Integrated oil tank

Info

Publication number: CN112208323B
Application number: CN202010948124.8A
Authority: CN
Inventors: 朱庆凯
Original assignee: SHANDONG TONGYA MOLDING TECHNOLOGY CO LTD
Current assignee: SHANDONG TONGYA MOLDING TECHNOLOGY CO LTD
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2022-05-03
Anticipated expiration: 2040-09-10
Also published as: CN112208323A

Abstract

The application discloses an integrated oil tank. The urea solution storage tank comprises a shell, wherein a first cavity capable of containing fuel oil and a second cavity capable of containing urea solution are arranged in the shell, the second cavity is arranged in the first cavity, a third cavity is arranged between the first cavity and the second cavity, and the bottom of the third cavity is communicated with the atmosphere. The third cavity can separate urea case (second cavity) and oil tank (first cavity), makes the temperature of urea case not receive oil tank high temperature influence and the high temperature, and when outdoor temperature was the subzero time, can also promote urea liquid temperature after opening the engine fuel temperature and rising. In addition, the second cavity is arranged in the middle of the first cavity, and the second cavity is not arranged on one side of the first cavity, so that fuel shaking in the driving process can be reduced, the safety is improved, and meanwhile, the noise caused by fuel surging is reduced; the urea liquid in the second cavity can be heated uniformly. The fuel tank can reduce the weight of the fuel tank, improve the fuel economy, and is beneficial to tail gas emission reduction, energy conservation and environmental protection.

Description

Integrated oil tank

Technical Field

The invention relates to the field of automobile devices, in particular to an integrated oil tank.

Background

With the rapid development of the automobile industry and the improvement of the environmental protection requirement of automobiles, the automobile fuel tank and the automobile urea tank are used as important safety parts and regulation parts in automobile parts, and the structural optimization and the performance improvement of the automobile fuel tank and the automobile urea tank become problems which are discussed and solved by manufacturers of various automobiles in a competitive mode. Because the temperature of the fuel tank can reach 70-90 ℃ during driving, the existing integrated fuel tank with the urea tank is usually separated from the fuel tank by only one wall, and the temperature is usually influenced by the high temperature of the fuel tank and is higher than the optimal catalytic reduction tail gas temperature (50-60 ℃) of urea liquid, thus being not beneficial to environmental protection.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an integrated oil tank which has the advantages of reasonable design, space saving, energy saving and improvement on the reaction temperature of urea solution.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:

an integrated oil tank comprises a shell, wherein a first cavity capable of containing fuel oil and a second cavity capable of containing urea liquid are arranged in the shell, the second cavity is arranged in the first cavity (at least the periphery of the side wall of the second cavity is surrounded by the first cavity),

and a third cavity is arranged between the first cavity and the second cavity, and the bottom of the third cavity is communicated with the atmosphere.

The advantages of this design are: the third cavity can separate the second cavity (urea box) from the first cavity (fuel tank), so that the temperature of the urea box is not influenced by the high temperature of the fuel tank and is not too high. The design utilizes the heat dissipation effect of air (playing a role of forced air cooling in the driving process) and the isolation and anti-seepage effects, because the temperature of the fuel tank can reach 70-90 ℃, the temperature of the urea solution is the best catalytic reduction tail gas state when the temperature is 50-60 ℃, if only one layer of wall is arranged between the urea solution tank and the fuel tank, the temperature of the urea solution is too high when the temperature of the fuel tank is higher, the urea solution is hydrolyzed, and the catalytic reduction effect cannot be finished; when the outdoor temperature is below zero, the temperature of the fuel oil can be increased after the engine is started, and the urea liquid is prevented from being too low.

In addition, the second cavity is arranged in the middle of the first cavity, and the second cavity is not arranged on one side of the first cavity, so that fuel shaking in the driving process can be reduced, the safety is improved, and meanwhile, the noise caused by fuel surging is reduced; the urea liquid in the second cavity can be heated uniformly.

In the integrated oil tank, the side wall of the third cavity is in an inverted V shape, and an opening of the inverted V shape is an air inlet of the third cavity;

preferably, the angle of the inverted V is 10-45 °, more preferably, 15-30 °;

preferably, an included angle m formed by the included angle edge of the first cavity side of the inverted V and the vertical line is larger than an included angle n formed by the included angle edge of the second cavity side of the inverted V and the vertical line and is less than 3 degrees;

preferably, the vertical height of the inverted V is more than half of the vertical height of the third cavity.

This design more does benefit to the entering of air, and in addition, the angle of falling V too big can influence the steadiness of second cavity, and can not play the good heat preservation effect to urea liquid in the second cavity, and the angle undersize of falling V can not play good radiating effect to urea liquid in the second cavity.

In the integrated oil tank, the side wall of the third cavity is provided with a reinforcing rib so as to enhance the support and stability of the side wall of the third cavity;

and/or, the inner surface of the side wall of the third cavity is provided with a groove-shaped flow channel, the opening of the groove faces the third cavity, preferably, the groove-shaped flow channel is arranged on the inner surface of the side wall of the third cavity at the side of the second cavity, and the groove-shaped flow channel extends and is distributed to the top of the third cavity in a spiral shape.

In the integrated oil tank, the bottom of the second cavity is provided with a sewage draining exit, and the sewage draining exit extends out of the bottom of the shell where the first cavity is located;

the air flow entering the third cavity is divided into upward air flow and horizontal air flow, the horizontal air flow can enter the third cavity to form cyclone flow after colliding with the outer wall of the sewage discharge outlet, and the air flow can be promoted to flow towards the inside of the third cavity by the reflection effect of the V-shaped inner wall, so that the urea box is well cooled; in addition, the convex sewage draining exit is convenient to fix, so that the second cavity is prevented from shaking.

In the integrated oil tank, a fourth cavity is arranged between the first cavity and the second cavity and is positioned above the third cavity,

optionally, the fourth cavity is vacuum, or a first through hole is formed in the position above the fourth cavity, at the joint between the shell and the third cavity, and/or a second through hole is formed in the position above the fourth cavity, where the first through hole allows air to enter the fourth cavity, and on the other hand, water can be injected into the fourth cavity and the third cavity below the fourth cavity through the first through hole to cool the fourth cavity, preferably, a groove-shaped flow channel is formed in the inner surface of the side wall of the third cavity, and the second through hole is communicated with the groove-shaped flow channel.

In the integrated oil tank, the outside of the shell is provided with the harness grooves, the harness grooves horizontally extend and are arranged along the length direction of the shell, and preferably, the inner edges of the notches of the harness grooves face inwards to form the harness clips.

The effect is as follows: the wire harness groove is used for clamping the wire harness and the pipeline of the oil drain tank sensor and the urea tank sensor, solves the problem of messy wire speed, and can improve the overall attractiveness.

In the integrated oil tank, one end of the outer part of the shell is provided with a concave part which can be provided with a fuel filter mechanism and/or a urea injection pump;

the fuel filter mechanism and/or the urea injection pump are/is designed on the oil tank body, so that the space is saved, the weight is reduced, and the fuel filter mechanism is arranged on the chassis bracket in the prior art;

and/or a first filling port communicated with the first cavity and a second filling port communicated with the second cavity are arranged above the shell.

In the integrated oil tank, the casing comprises an upper casing and a lower casing, the upper casing and the lower casing are respectively integrally injection-molded, and the upper casing and the lower casing are connected in a hot melting and/or welding mode.

the middle of the lower shell extends upwards to form the third cavity, the inner side of the upper wall of the upper shell extends downwards to form the fourth cavity, and the upper end of the third cavity is tightly connected with the lower end of the fourth cavity to form the second cavity.

In the integrated oil tank, the shell is made of metal (such as aluminum alloy) or polyethylene,

and/or the integrated oil tank also comprises a temperature sensor for monitoring the temperature of the urea solution in the second chamber,

and/or the integrated oil tank further comprises a heating device, the shape of the heating device is matched with that of the inside of the third chamber, the heating device is hollow and can contain high-temperature liquid, the wall of the heating device is made of metal, and a heat insulation material layer is arranged outside the wall, close to the first chamber, of the heating device.

The invention also provides a method for adjusting the temperature of the urea box in the integrated oil tank, which comprises the following steps: and monitoring the internal temperature of the second cavity in the integrated oil tank by using any one of the integrated oil tanks, and enabling the internal temperature of the second cavity to reach a preset target value by adjusting the air flow speed in the third cavity and/or introducing low-temperature or high-temperature liquid into the third cavity.

Has the advantages that:

1. the integral structure design of the integrated oil tank enables the urea tank (the second cavity) to be arranged in the oil tank (the first cavity) and separated by the third cavity, and the temperature of urea liquid can be adjusted to ensure that the urea liquid can be stabilized at 50-60 ℃ by adjusting the flow rate of air flow in the third cavity, the temperature of the liquid and the like, so that the tail gas treatment effect is improved;

2. the integral structure design of the integrated oil tank, particularly the shape and the structure design of the third cavity are beneficial to the entering and flowing of air flow;

3. the integrated oil tank has reasonable integral structure design, saves space, simultaneously solves the problems of high temperature of fuel oil and low treatment efficiency of urea liquid tail gas, and is favorable for tail gas emission reduction and energy conservation and environmental protection.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a perspective view of an integrated fuel tank.

Fig. 2 is a plan view of the integrated fuel tank shown in fig. 1.

Fig. 3 is a cross-sectional view of the integrated fuel tank shown in fig. 2 at a-a', wherein a horizontal dotted line represents a boundary line of the upper and lower cases, and a vertical dotted line represents a vertical direction.

Fig. 4 is a perspective view of an upper case of the integrated fuel tank shown in fig. 1.

Fig. 5 is a bottom view of the lower case of the integrated fuel tank shown in fig. 1.

Fig. 6 is a perspective view of a lower case of the integrated fuel tank shown in fig. 1.

Fig. 7 is a side view of the lower case of the integrated fuel tank shown in fig. 1.

The reference numbers in the figures are as follows:

the device comprises a shell 1, a first cavity 2, a second cavity 3, a third cavity 4, a sewage draining outlet 5, an inverted V-shaped wall 6, a fourth cavity 7, a wire harness groove 8, a wire harness clip 9, a concave part 10, an upper shell 11, a lower shell 12, a first filling opening 13, a second filling opening 14, a V-shaped wall 15 and a strap positioning structure 16.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

Embodiment 1 an integrated oil tank

As shown in fig. 1 to 7, the integrated oil tank provided by this embodiment includes a casing 1, where the casing 1 is divided into an upper casing 11 and a lower casing 12, the upper casing 11 and the lower casing 12 are respectively formed by injection molding, and the upper casing 11 and the lower casing 12 are connected by hot melting and welding;

a first cavity 2 (namely an oil tank) capable of containing fuel oil and a second cavity 3 (namely a urea tank) capable of containing urea liquid are arranged in the shell 1, the second cavity 3 is arranged in the middle of the first cavity 2 (the periphery of the side wall of the second cavity 3 is surrounded by the first cavity 2), a third cavity 4 and a fourth cavity 7 are arranged between the first cavity 2 and the second cavity 3, the fourth cavity 7 is positioned above the third cavity 4, the bottom of the third cavity 4 is communicated with the atmosphere, and the fourth cavity 7 is vacuum;

a first filling port 13 communicated with the first cavity 2 and used for filling fuel oil and a second filling port 14 communicated with the second cavity 3 and used for filling urea liquid are arranged at the top of one side of the upper shell 11;

the outer part of the shell 1 is provided with a wiring harness groove 8, the wiring harness groove 8 extends horizontally along the length direction of the shell 1, and the inner edge of the notch of the wiring harness groove 8 extends inwards to form a wiring harness clip 9;

the exterior of the shell 1 is provided with a strap positioning structure 16 which extends and is arranged along the width direction of the shell 1;

one end of the outside of the shell 1 is provided with a sunken part 10 which can be provided with a fuel filter mechanism and/or a urea injection pump.

As shown in fig. 3, the side wall of the third cavity 4 is an inverted V shape (i.e. an inverted V-shaped wall 6), and the opening of the inverted V is an air inlet of the third cavity 4; the side wall of the fourth cavity 7 is V-shaped (i.e. V-shaped wall 15);

the angle of the inverted V in the inverted V-shaped wall 6 is 10-45 degrees, preferably, 15-30 degrees;

an included angle m formed by an included angle edge of the first cavity side of the inverted V and a vertical line in the inverted V-shaped wall 6 is larger than an included angle n formed by an included angle edge of the second cavity side of the inverted V and the vertical line and is 2 degrees (as shown in FIG. 3);

the vertical height of the inverted V in the inverted V-shaped wall 6 is half of the vertical height of the third cavity 4;

the side wall of the third cavity 4 is provided with a reinforcing rib (not shown in the figure) to enhance the support and stability of the side wall of the third cavity; the bottom of the second cavity 3 is provided with a sewage draining outlet 5, the sewage draining outlet 5 extends out of the bottom of the shell 1 where the first cavity 2 is positioned, the outer wall of the sewage draining outlet 5 is vertical, and the upper end of the sewage draining outlet is arc-shaped and is connected with the inverted V-shaped wall 6;

as shown in fig. 6 and 7, the middle of the lower housing 12 extends upward to form a third cavity 4, as shown in fig. 4, the inner side of the upper wall of the upper housing 11 extends downward to form a fourth cavity 7, and the upper end of the outer wall of the third cavity 4 is tightly connected with the lower end of the outer wall of the fourth cavity 7 to form a second cavity 3 (shown in fig. 3).

In the integrated oil tank, the casing is made of polyethylene, and can also be made of metal such as aluminum alloy.

In the above-mentioned integrated oil tank, still include the temperature sensor who is used for monitoring the urea liquid temperature in the second chamber 3 to in time adjust urea liquid.

In the integrated oil tank, the first chamber 2 and the second chamber 3 are rectangular bodies, and may be formed in other shapes such as cylinders.

In the first integrated oil tank, a groove-shaped flow channel (not shown) can be further arranged on the inner surface of the side wall of the third cavity 4, the opening of the groove faces the third cavity 4, preferably, the groove-shaped flow channel is arranged on the inner surface of the side wall of the third cavity 4 on the side of the second cavity 3, and the groove-shaped flow channel extends and is distributed to the top of the third cavity 4 in a spiral shape.

The grooved runner can improve the air inlet amount on one hand, and can also guide the airflow to flow to the top of the third cavity 4, so as to improve the cooling effect of the top of the third cavity 4, and on the other hand, when the temperature in the second cavity 3 is higher than a certain value, the grooved runner can also cool the third cavity 4 by introducing cold water into the third cavity 4, so that the grooved runner has a water hanging effect, and the cooling effect is improved by combining the airflow and the moisture evaporation.

In the integrated oil tank in the 'one', a heating device (not shown in the figure, specifically, a cylindrical body with an inverted V-shaped longitudinal section of a wall) with the shape matched with the inner shape of the third chamber 4 can be further included, the heating device is hollow inside and can contain high-temperature liquid, the wall of the heating device is made of metal such as stainless steel, the wall of the heating device close to the second chamber 3 plays a role in heat conduction, heat can be conducted to the second chamber 3, and an insulating material layer such as foam is arranged outside the wall of the heating device close to the first chamber 2, so that danger caused by heating oil can be prevented; this heating device is detachable, only packs into when needs heat urea liquid and uses in the third cavity 4, need not be taken off, and this design makes integrated oil tank needn't install heating device, has alleviateed the heavy burden of integrated oil tank, and simple and practical convenient.

Example 2 method for regulating the temperature of the Urea tank in an Integrated tank

Under the condition of room temperature, 60L (common volume) of 70 ℃ gasoline is injected into the first cavity 2 of the integrated oil tank in the first embodiment 1, 15L (common volume) of 70 ℃ urea liquid is injected into the second cavity 3, the gasoline and the urea liquid are located at the joint of the third cavity 4 and the fourth cavity 7, the vertical height of the inverted V is half of the vertical height of the third cavity, the bottom of the sewage discharge port extends out of the bottom of the shell where the first cavity 2 is located by 3cm, the temperature of the urea liquid inside the second cavity 3 in the integrated oil tank is monitored, air is blown to the bottom of one side of the shell 1 from the horizontal direction, the air speed is 17m/s (matched with the conventional vehicle speed), in order to reduce the temperature of the urea liquid inside the second cavity 3 to 55 ℃, the other conditions are the same, and when the angle of the reverse V inside the third cavity 4 is different, the time required for cooling is different, and the results are shown in Table 1.

TABLE 1 influence of different inverted V angles of the third cavity on the cooling effect

The results in table 1 show that the cooling effect is not obvious when the angle of the inverted V is 5 degrees, the urea solution in the second cavity can be cooled when the angle of the inverted V is 10-50 degrees, the cooling time is short when the angle is 15-30 degrees, and the change of the cooling time is not obvious after the angle is greater than 30 degrees, so that the stability of the structure is ensured by selecting a relatively small angle.

Those not described in detail in this specification are within the skill of the art. The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An integrated oil tank is characterized by comprising a shell, wherein a first cavity capable of containing fuel oil and a second cavity capable of containing urea solution are arranged in the shell, the second cavity is arranged in the first cavity,

a third cavity is arranged between the first cavity and the second cavity, and the bottom of the third cavity is communicated with the atmosphere; the side wall of the third cavity is in an inverted V shape, the opening of the inverted V is the air inlet of the third cavity,

the angle of the inverted V is 10-45 degrees;

an included angle m formed by the included angle edge of the first cavity side of the inverted V and the vertical line is larger than an included angle n formed by the included angle edge of the second cavity side of the inverted V and the vertical line and is less than 3 degrees;

the vertical height of the inverted V is more than half of the vertical height of the third cavity;

the side wall of the third cavity is provided with a reinforcing rib; the inner surface of the side wall of the third cavity is provided with a groove-shaped flow channel, the opening of the groove faces the third cavity, the groove-shaped flow channel is arranged on the inner surface of the side wall of the third cavity at the side of the second cavity, and the groove-shaped flow channel extends and is distributed to the top of the third cavity in a spiral shape;

a fourth cavity is arranged between the first cavity and the second cavity and is positioned above the third cavity,

the fourth cavity is vacuum, or a first through hole is formed in the position, above the fourth cavity, of the shell and/or a second through hole is formed in the position, at the connecting position between the fourth cavity and the third cavity, of the connecting portion, a groove-shaped flow channel is formed in the inner surface of the side wall of the third cavity, and the second through hole is communicated with the groove-shaped flow channel.

2. An integrated fuel tank according to claim 1, characterized in that the angle of the inverted V is 15-30 °.

3. The integrated oil tank as claimed in any one of claims 1 or 2, wherein a sewage draining outlet is arranged at the bottom of the second cavity and extends out of the bottom of the shell where the first cavity is located.

4. The integrated fuel tank of any one of claims 1 or 2, wherein a harness slot is formed outside the shell, the harness slot extends horizontally along the length direction of the shell, and the inner edge of the notch of the harness slot extends inwards to form a harness clip;

and/or one end of the outer part of the shell is provided with a concave part which can be provided with a fuel filter mechanism and/or a urea injection pump;

5. The integrated fuel tank of any one of claims 1 or 2, wherein the housing comprises an upper housing and a lower housing, the upper housing and the lower housing are respectively formed by injection molding in an integrated manner, and the upper housing and the lower housing are connected by means of thermal fusion welding and/or welding.

6. The integrated fuel tank of claim 5, wherein a fourth cavity is disposed between the first cavity and the second cavity, the fourth cavity being located above the third cavity,

7. An integrated fuel tank according to any one of claims 1 or 2, wherein the housing is made of metal or polyethylene,

8. A method of regulating the temperature of a urea tank in an integrated fuel tank, comprising the steps of: monitoring the internal temperature of the second chamber in the integrated fuel tank using the integrated fuel tank of any one of claims 1 to 7, and adjusting the gas flow rate in the third chamber and/or introducing a low-temperature or high-temperature liquid into the third chamber to achieve a preset target value for the internal temperature of the second chamber.