FUEL PURIFYING APPARATUS

Abstract: The invention is related to a fuel purifying apparatus, especially diesel fuel, which consists in a hollow cylin­ drical body (10) that has a fuel intake orifice (20) and an exit orifice (90) through which the fuel, respectively, enter the apparatus to be purified, and leaves in the direction of the vehicle engine with increased purity properties; a fuel flow conduit (30) in fluid communication with the intake orifice (20), solidly arranged on the inner wall of the cylin­ drical body (10) and whose fuel discharge orifice (40) is next to a metal deflector plate (50) that extends diametrally and also substantially in a longitudinal manner, in the interior of the cylindrical body; and an electric heating element (60) that partially penetrates the cylindrical body through an insertion orifice made in said body, the inner end of te heating element being near the deflector plate to heat it. In addition, the apparatus incorporates drainage elements (70) for withdrawing from the apparatus the impurities separated out of the fuel.

Description: The invention relates to a fuel purifying apparatus for the engine of a vehicle according to the preamble of the main claim. Such an apparatus is known from FR-A-2 510 193. The object of the invention is to improve this known apparatus and to that end it is provided that an interior fuel flow conduit is present within the hollow body which is in fluid communication with the fuel intake orifice and is having a fuel discharge orifice positioned below the fuel intake orifice, the generally flat metal deflector plate being heated by said heating element and being adjacent to said fuel discharge orifice, a longitudinal axis of said plate being positioned parallel to a longitudinal axis of the body and angled relative to the fuel discharge orifice so that the fuel discharged from said orifice contacts the plate to create a centrifugal current causing turbulence by which impurities are seperated from the fuel. It has appeared that when using the apparatus according to the invention a good separation can be obtained of the impurities or foreign components from the fuel, such as water, oxides, sulfur etc. so that the fuel supplied to the injection system of the engine has optimal qualitative conditions for generating greater yield and duration of the engine of the vehicle. Some sheets of drawings are included for better illustration and understanding of this invention, on which Fig. 1 is a conventional perspective view of the fuel refining apparatus. Fig. 2 is a side view of the apparatus of this invention. Fig. 3 is a perspective view of the refining apparatus sectioned longitudinally, showing practically all the components of the apparatus. Fig. 4 is a view of one of the blowoff valves of the apparatus shown with its pieces blown up. Detailed description of the invention The fuel refining apparatus 100 consists of a cylindrical body 10 which includes a fuel intake orifice 20 into which is connected a pipe or hose (in dotted lines) from the fuel storage tank. Once the fuel enters the cylindrical body 10, it is led by an interior fuel flow conduit 30, placed in fluid communication with the orifice 20, from which it leaves by an orifice 40 made in the lower part of the pipe 30. On flowing out from the interior pipe 30, the fuel hits against a metal plate 50 (sectioned vertically in Fig. 3), which runs diametrally and also substantially longitudinally around the interior of the cylinder. This plate is preheated by an electric resistor 60 which is connected to the engine starter key. Due to the preheating of the plate 50 and the angular relationship maintained by the conduit 30 and the preheated plate 50, the fuel that leaves said pipe 30 and hits against the plate is projected centrifugally to create a turbulence that initially facilitates separation of its components such as water, sulfur, sulfuric acid, etc. which, due to their greater specific weight in relation to the (diesel) fuel tend to be precipitated toward the bottom surface of cylinder 10. Meanwhile, due to its specific weight which is less than 1, the diesel tends to be maintained in the upper part in relation to the other components, whose specific weights are greater than 1, and in the case of the water, the same as the unit. The apparatus 100 also consists of a lower blowoff valve 70 and an upper blowoff valve 80. The valve 70 is activated manually in order to withdraw from the bottom surface of the cylinder the impurities or components of the diesel that do not carry out favorable functions in the combustion of this fuel, while the valve 80, which can also be activated manually, allows withdrawal of the air that might be stored in the upper part of the cylinder to make drainage of the apparatus more efficient. Each drainage valve (70,80) is composed of a valve body 71 which is traversed longitudinally be a stem or pin 72 which has a conduit 73 almost along its entire length and an end packing 74 to ensure the air tightness of the valve. The valve is complemented by a spring 75 placed over the valve body 71 and which surrounds the stem 72; furthermore a bolt 76 traverses the stem transversely, keeping the spring under a predetermined pressure. Finally, the fuel already refined by the apparatus leaves through the fuel exit orifice 90 toward the primary filter from where it later passes to the engine's injection system. Consequently the diesel fuel, preheated and refined, further favors combustion, increasing the yield and use life of the engine. Based on results of experimentation of tests on the apparatus, we can assure that the retention of the water contained in the fuel, of the sulfuric acid and of oxides generated in the storage tank, as well as impurities such as earth, dirt, etc. is on the order of 95 % to 98 % for each case. Even though the invention has been described in detail, it must be clarified that it has been described with respect to certain ways of being used, but this must not be understood as a restiction on the scope of the invention, as these manners of utilization must only be considered restricted by the scopes of the following:

Claims: A fuel purifying apparatus for the engine of a vehicle comprising a hollow body (10) with: a fuel intake orifice (20) in fluid communication with a fuel supply, a deflector plate (50) located inside said body (10), a heating element (60) near said plate (50) and penetrating said bodywall, a fuel exit orifice (90) in fluid communication with the engine for supplying purified fuel to this and with a lower blowoff valve (70) for removing impurities from said body (10), characterized by an interior fuel flow conduit (30) within the hollow body (10) and in fluid communication with the fuel intake orifice (20) and having a fuel discharge orifice (40) positioned below the fuel intake orifice (20), the generally flat metal deflector plate (50) being heated by said heating element (60) and being adjacent to said fuel discharge orifice (40), a longitudinal axis of said plate (50) being positioned parallel to a longitudinal axis of the body (10) and angled relative to the fuel discharge orifice (40) so that the fuel discharged from said orifice (40) contacts the plate (50) to create a centrifugal current causing turbulence by which impurities are seperated from the fuel. An apparatus according to claim 1, characterized in that the interior fuel flow conduit is an elongated pipe (30) by the perpendicular arrangement of which, in respect of the discharge plane of the intake orifice (20), a first impact of the fuel entering the apparatus is obtained. An apparatus according to claim 1 or 2, characterized in that the interior fuel flow conduit (30) is provided with a fuel discharge orifice (40) next to the preheated plate (50), from where the fuel is projected against said plate. An apparatus according to one of the preceding claims, characterized in that the angular relationship obtained between the interior fuel flow conduit (30) and the deflector plate (50) is such that the fuel projected against it tends to form a centrifugal current of fuel in order to facilitate separation of the components of the fuel which have to be eliminated. An apparatus according to one of the preceding claims, characterized in that the inner end of the electrical resistor element (60) is next to the metal deflector plate (50) to preheat it. An apparatus according to one of the preceding claims, characterized in that beside said lower blowoff valve (70) for draining the impurities separated out from the fuel a second venting valve (80) is present for withdrawing the gases from the interior of the apparatus and for facilitating the draining operation of the apparatus.

Inventors: MONTEMAYOR UZETA, LUIS ALFREDO
Applicants: MONTEMAYOR UZETA, LUIS ALFREDO
Application year: 1989
Main classification: F02M37
IPC codes: F02M31, F02M37, B01D17, F02B3, B01D21