DE6912309U - FUEL TANK POSITIONED IMMEDIATELY NEXT TO THE BODY WALL OF A MOTOR VEHICLE - Google Patents

Description

Utility model registration March 24, 1969 Applicant: ADAM OPEL AKTIENGESELLSCHAFT, Rüsselsheim / Hessen

One right next to the body wall
Motor vehicle arranged fuel tank

The innovation relates to one immediately next to the body wall of a motor vehicle arranged fuel tank with a filler neck arranged on its upper side and one in the area the compensation space provided for its upper part

As a result of leakage of fuel from the fuel tank
To avoid heating up, it must be ensured that the fuel tank is not completely filled when refueling.

For this purpose, it is known in the case of fuel tanks whose filler necks are connected to the side of the fuel tank and whose filler openings are above the tank, in the upper part of the
Fuel tank to provide a compensation roughness, which during the refueling process in accordance with the from a narrow ventilation opening
escaping air is only filled to a small extent.

When the fuel is heated, it can expand into this empty space without having to worry about _v da? Fuel leaks into the vent line and is lost.

To ensure that even with fuel tanks »with those the filler neck is connected to the top of the container, do not fill the entire container when filling up with fuel According to the novelty struck, dan ^ ta filler neck with a

the extension protruding into the interior of the container can be seen

It is true that the one above the outlet opening is also in this arrangement of the filler neck located in the reservoir space is ventilated, but the corresponding opening is too narrow, as that during the refueling process a larger amount of air from this opening could escape · Accordingly, the liquid level can only protrude insignificantly above the upper edge of the into the container space * the outlet opening of the filler neck «rise ·

As long as the lower edge of the outlet opening of the filler neck from the liquid level when refueling the fuel tank is not reached, the fuel can come out of it displaced from the container. Air almost unhindered to the suspended Escape the spray gun through the filler neck. Only when the liquid level washes over the outlet opening of the filler neck this connection to the outside is prevented The amount of air emerging from the ventilation opening is small because of the small diameter, so that when it is reached FüUungsgrad the liquid column in the filler neck while leaving it of a compensation chamber rises very quickly to the filling opening «

TIm the transitions from the state of unhindered escape of the displaced air through the filler neck and the state complete To make this connection as short as possible, there is Another feature of the innovation is the lower band of the SinfülfsttfEeene cut off horizontally · - ~ - «wt If, with this version, the fuel level changes when refueling approaches the filler neck protruding into the container space, occurs an effective impairment only occurs before this point is reached of the cross section available for the escaping air. As soon as shortly thereafter, the outlet opening of the filler neck is flooded, the filling process must be stopped immediately because of the rapidly rising fuel in the filler neck. Due to the special Formation of the lower band of the filler neck is achieved that the container after completion of the filling process regardless of the Refueling speed up to the unambiguous, specific, maximum bit-permeable Filling level is full "

The object on which the innovation is based is also achieved, according to another important feature, in that on the section of the filler neck protruding into the interior of the fuel tank, a compensating tank is attached, which has a narrow opening on its lower and upper side. Is this section of the insert immediately before the. Passage opening of the filler neck through the container ventilation openings through which the air still above the fuel level can escape after flushing over the outlet opening of the filler neck.

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In this way, the fuel tank can be completely dependent on the volume of the expansion tank introduced to be filled

In this embodiment, after the end of the refueling process, it penetrates through the lower opening fuel into the compensation container and the air escapes through the upper opening in the fuel tank space, which in turn is ventilated again. In the process, the fuel tank, which is initially full to the brim, sinks the fuel level according to the volume of the expansion tank, which is calibrated with fuel during the equalization.

According to a further feature of the wages, there is the compensation

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container from an annular body, which with its inner opening on the protruding into the interior of the fuel tank Section of the filler neck is pressed on. Appropriately, such an annular container, provided it is made of sheet metal, formed by welding or soldering two ring-shaped shells placed against each other

According to a further feature of the innovation, the compensation container made of * plastic.

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In the following, the innovation is described in detail and in the Drawings shown

Ee show:

Figure 1 an upright fuel tank for Motor vehicles in section with one on the filler neck attached expansion tank,

Figure 2 shows a section of a fuel tank

a design of the filler neck that differs from the version according to Figure 1

The fuel tank consists of two identical halves 12, and 13, which along their flanges 1 * t and 15 in a known manner, for. B are connected to one another by roller seam welding

The fuel tank is essentially cuboid in shape. Two edge lengths etad about the same length and the third edge is about half the length of the other two edges. The container is placed in an upright position; H. its shortest extension runs horizontally, directly next to the * body wall of a motor vehicle installed.

A nipple 16 is located on the underside of one container half 13

welded in for the connection of the fuel extraction line. on A filter 17 is attached to the nipple 16 on the inside of the container.

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The container has embossings on its corners for reinforcement 18, 19, 20 and 21 on · At its top are not in the area Stem-side impressions shown Belttftungsröhrchen 22 welded on, through which air can flow into the container space when fuel is withdrawn · With the ventilation tubes "22 are flexible ventilation lines 23 connected to a suitable Point to the outside of the body

In the area of the embossing 20, the right container half 13 has an opening 2 * »with a band 25 drawn through to the outside. In these A filler neck 26 is welded into the opening and protrudes into the container 11 with an extension 27. On this extension an annular expansion tank 28 is secured by a press fit. This consists of two ring-shaped shells 29 * 30, which are connected to one another in a suitable manner at their free edges bind and in this way form a closed body

Above the annular expansion tank 28 are in the extension 27 of the filler neck 26 several openings 31 are provided, through which the air in the last Füllungsabechnitt, then when the inner opening of the filler neck 26 of the Liquid level is flooded, through the filler neck 26 can escape.

The expansion tank 28 has on its bottom and top a small opening each 32 and 33 * after refueling the liquid level in the container 11 drops to the extent that the expansion tank 28 fills up with fuel.

The fuel penetrates through the lower opening .52-4 * den A reservoir 27 and displaces the air contained therein through the upper opening 33 into the fuel tank.

The volume of the expansion tank 28 is dimensioned in such a way that ₍ even with the maximum possible temperature increase of the fuel after refueling) the resulting maximum volume increase of the fuel is not greater than the volume of the expansion tank not yet filled with fuel. This ensures that If the temperature rises and the fuel tank is fully filled, the amount of fuel corresponding to the increase in volume or part of it does not flow off via the ventilation line and is thus lost.

In the exemplary embodiment according to FIG. 2, a separate expansion tank is dispensed with.

The compensation space directly above the inner one is used here Opening of the filler neck 35 lying tree of the fuel tank 11. As in the first embodiment, the filler neck 35 has an example an extension 36 projecting into the container space. Dieee Extension is taking into account the installation position of the fuel tank cut horizontally ^ bo that this band is suddenly flooded by the rising liquid level when refueling. The one in the fuel tank above the inner opening the air in the filler neck cannot escape quickly enough through the ventilation lines after this level of filling has been reached, so that this space with later occurring volume increases is fully available as a compensation room due to the higher temperature.

Through the horizontal course of the inner end of the filler neck and the resulting very quick reduction in the ventilation cross-section available when refueling to zero, further filling of the tank at a reduced tank speed is also excluded.

Protection claims

Claims (1)

1 I · ♦ · · ♦ ill · · · · ) t ι ··· f β Protection required 2 * +. March 1969 1. directly next to the body wall of a motor vehicle arranged fuel tank with a on its upper " filler neck arranged on the side and an outside equal space seen in the area of its upper part, characterized in that the filler neck (26, 35) with an extension (27 «36) into the interior of the fuel tank (11) protrudes. 2 · fuel tank according to claim 1, characterized in that the axis of the filler port «$%>) is arranged inclined at an angle to the vertical and that the lower band of the filler neck (35) runs horizontally .. (Figure 2) 3 · fuel tank according to claim 1, characterized in that on the in the interior of the fuel tank (11) protruding section (27) of the filler neck * (26) an expansion tank (28) is attached, which has a narrow opening (32, 33) on its lower and upper side. has and that in this section (27) of the filler neck (26) several ventilation openings (31) are provided directly in front of the opening of the filler neck through the container wall are. (Figure 1) k. Fuel tank according to claim 1 and 3, characterized in that the expansion tank (28) is annular and with its inner sand pressed onto the section (2?) of the filler neck (26) protruding into the interior of the fuel tank is· § 5 · Fuel tank according to claim 1, 3 characterized in that the expansion tank (28) consists of Sheet metal consists and two by means of welding or soldering interconnected annular shells (29 * 30) is made. 6. Fuel tank according to claim 1, 3, k and 5 _t characterized in that the annular expansion tank (28) is made of plastic.