Fluid handling – With casing – support – protector or static constructional... – Vehicle
Patent
1994-04-25
1996-02-06
Chambers, A. Michael
Fluid handling
With casing, support, protector or static constructional...
Vehicle
137559, F16K 3700
Patent
active
054889707
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
Improvements to L.P.G. (liquid propane gas) tanks, in particular with reference to the positioning of the valve groups.
1. Technical Field
This invention concerns improvements to toroidal-shaped L.P.G. tanks which, due to their particular shape, may be easily placed inside the spare wheel compartment. In the toroidal-shaped tank described herein the hollow centre of the tank is used for positioning the valve group connection rings, which may either project or be flush-mounted and also for allowing the passage of the pipes for connecting the tank with the engine fuel supply system and the filler.
The valves are placed between a lid, at the top, and a bottom plate tied to each other in such a manner as to constitute an airtight chamber
2. Background Art
In L.P.G. tanks and, in particular, in the toroidal-shaped tanks produced to date, the fuel-filling valve group is generally located on the outside of the tank itself, so that it is necessary to make a hole for connecting the valve group with the outside filler. Alternative solutions also patented by the same holder describe the possibility of positioning the multivalve connection ring in a recessed position, with regard to the tank walls.
Such a solution, however, determines bulky appendixes which may cause problems.
Other alternative solutions have been described, for example, in FR Patent No. 883,075 and GB 117.343 and in AT Patent 370.367.
FR Patent 883.075 shows a ring-shaped tank that can be placed in the hollow intended for the spare tire, in particular for the external spare tire of motor vehicles, and is provided with a valve for filling it that can be reached from the central inside part of the tank.
GB Patent 117.343 describes a toroidal tank with the filling valve placed in the middle, empty part of the tank itself. AT Patent 370.367 describes a tank for GPL in which two bases of a ring-shaped tank are united to each other by a tubular, modeled element.
DISCLOSURE OF INVENTION
This invention provides for a toroidal-shaped tank with the possibility of positioning the multivalve ring, for both the Italian and the foreign markets, inside the hollow centre of the tank, either projecting or flush-mounted in the tank itself, allowing the passage of the two pipes which connect the tank with the engine fuel supply system and the filler, said pipes passing through small holes specifically designed for the ventilation of the chamber, by means of a breather flange located on the bottom of the luggage compartment (and protected on the outside by a carter), in order to position it in the best possible manner possible for fuel filling from the outside.
In order to prevent any pollution of the air or of the luggage compartment and, therefore, any leaks into the passenger compartment, the chamber in the middle of the tank housing the valves is sealed by a lid at the top and a plate at the bottom, strongly fixed to each other by means of a tie rod. The top lid has a transparent window in the middle so that the valves may be inspected. Furthermore, the space between the tank and the tank-housing in the luggage compartment is also sealed, in order to prevent any leaks, thus creating a chamber which is airtight towards the inside of the vehicle and which may discharge any leaks towards the outside of the vehicle through the holes bored for the passage of the pipes.
The foregoing summary explanation may be better understood from the following detailed description, making reference to the attached drawings, in which:
FIG. 1 shows a cross-section of the preferred positioning of the valve connection rings on a toroidal-shaped tank placed in a luggage compartment.
FIG. 1a shows a cross-section of the toroidal tank described herein housed in the spare wheel compartment.
FIG. 1b shows a bird's-eye view of the tank shown in the FIG. 1a.
FIG. 1c shows some details of the fastening of the tank and the bottom plate gasket.
FIG. 1d shows a side view of the top lid of the valve chamber.
FIG. 2 shows a bird's-eye view of the toroidal-shaped tank.
FIGS. 3 to 13 show
REFERENCES:
patent: 5022428 (1991-06-01), Vilines
Brown Laurence R.
Chambers A. Michael
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