MXPA99010177A - Oil pan drain port adapter system for engine flushing apparatus - Google Patents

Abstract

El montaje de adaptador de orificio de drenaje del cárter de aceite para un sistema de limpieza de motor que incluye un miembro adaptador principal y una pluralidad de miembros adaptadores intercambiables. Cada uno de los miembros adaptadores intercambiables incluye una primer porción de extremo cilíndrica enroscada para engranarse y acoplarse con una porción enroscada correspondiente en el orificio de drenaje del cárter de aceite, una porción de extremo opuesta que forma un anillo, y un lumen interno que conecta la primer porción de extremo cilíndrica enroscada y la porción de extremo opuesta en comunicación fluida. La porción de extremo opuesta de cada miembro adaptador intercambiable se recibe en el extremo de entrada del miembro adaptador principal en unángulo fijo de orientación. El anillo tiene una pluralidad- de aperturas que se extienden a través del anillo para permitir que el fluido fluya desde el miembro adaptadora la entrada del miembro adaptador principal. Un tornillo de ajuste se extiende dentro de y viaja en el anillo del miembro adaptador intercambiable, evitando que el miembro adaptador intercambiable sea desalojado del miembro adaptador principal.

Description

OIL CRANKSHAFT DRAIN HOLE ADAPTER SYSTEM FOR ENGINE CLEANING APPARATUS BACKGROUND OF THE INVENTION Field of Invention: This invention relates generally to a cleaning apparatus for internal combustion engines, and more particularly concerns an improved configuration for a drainage orifice adapter fitting of the crankcase or oil reservoir to be connected to the drainage of the oil pan of an engine. of internal combustion.

Description of Related Art: During the operation of the internal combustion engine, the oil is taken from the oil pan, where it is normally stored, and which circulates along the engine to lubricate the internal moving parts. For optimum operation and life of the engine, and for effective lubrication, the oil must be clean and must maintain its lubricating qualities. To store the oil free of large metal particles and dirt REF .: 31847 which inevitably is created and accumulated in the oil with the continuous use of the motor, a replaceable oil filter is normally carried in the engine. Additionally, to remove the smaller particles and acid that form in the oil, which the filter can not remove, the engine oil pan is periodically drained and filled with new oil, and a new oil filter can be installed . Equally with such periodic maintenance not all foreign particles are eliminated. Over time an oily "sediment" is formed within the engine parts of such foreign particles, particularly in the oil pan. This sediment degrades engine performance, and can release particles after the oil has been replaced. The presence of these particles in the oil leads to premature engine wear. To reach and remove this sediment without disassembling the engine, a motor cleaning apparatus is known which treats the engine with a cleaning solution, circulating the cleaning fluid through the engine and the oil drain pan from which the oil flows. of the engine has been drained. In such a cleaning apparatus a conduit, usually a hose, capable of resisting a fluid under pressure, is connected to the oil filter orifice leading to the lubrication system of the engine. Another conduit is connected to the drain plug hole in the engine oil pan. The cleaning fluid circulates from the apparatus through a conduit in the engine, by means of which the fluid ideally dissolves the sediment and collects any foreign particles in suspension. The cleaning fluid leaves the engine with the dissolved and suspended debris by means of the drainage hole of the oil pan and the second conduit, through which the now "dirty" cleaning fluid returns to the cleaning apparatus to additionally remove it. or process it. Such a conventional cleaning apparatus continues to circulate the cleaning fluid for a prescribed treatment period. Since the size and type of the oil filter hole and the drain hole of the oil pan differ from an automobile manufacturer to make it and the same from the different models or the model year of a single car manufacturer, the device Cleaning includes a necessary team of associated adapters to allow the connection of the ducts to the respective oil filter and the drainage holes of the oil pan of the vast majority of automotive engines.

In fitting adapters for drainage holes of the engine oil pan, various components and accessories packaged in the engine compartment of modern automobiles provide formidable obstructions for the connection of the cleaning apparatus to the drain hole and the oil pan. Accordingly, it would be desirable to provide a configuration for assembling the adapter for the drainage hole of the oil pan which can be more easily adapted in restricted spaces of an engine compartment during the cleaning operation. The present invention knows about these needs. ßREVE DESCRIPTION OF THE TNVENC? ON Briefly, and in general terms, the present invention is provided for an improved cleaning system for cleaning internal combustion engines of a wide variety of shapes and models employing the engine oil filter orifice and the drain orifice of the crankcase. oil to circulate the cleaning fluid to the engine components, such as the crankshaft, and to other components, such as the oil pump and the oil pan.

The present invention is accordingly provided for a drain orifice assembly of the oil pan for a cleaning apparatus for internally cleaning internal combustion engines. In a currently preferred embodiment, the invention is provided for a drain hole assembly of the oil pan for an engine cleaning system by circulating cleaning fluid through an internal combustion engine to clean the internal combustion engine , "the engine that is of the type that contains an engine block, an oil filter hole on the engine block and an oil drain pan that has an oil drain plug hole. The motor commonly includes a cleaning apparatus for releasing a volume of cleaning fluid and receiving the cleaning fluid used, a first conduit for conducting the cleaning fluid from the cleaning apparatus to the oil filter orifice, and a second conduit for driving. the cleaning fluid from the drainage hole of the oil pan by means of the improved oil sump drainage hole adapter system to the cleaning arato. An improved configuration for a mounting of the oil pan drain orifice adapters for the cleaning apparatus that allows the oil drain plug orifice adapters to be used in restricted spaces. In a presently preferred embodiment, the oil pan drainage orifice adapter system of the invention includes a main adapter member and mixed interchangeable adapter members which contain a circular crown which engages a corresponding portion of the main adapter member, forming a fixed angle so that the combination can adapt in restricted spaces between the drainage hole of the oil pan of various automobiles and adjacent parts of the automobile. An interchangeable adapter member is fitted on the main adapter member through an O-ring that prevents fluid seepage from the connection between the main adapter member and the interchangeable adapter member connected. The interchangeable adapter members have a threaded end for coupling with a drained orifice of the oil pan screwed correspondingly, with dimensions of the interchangeable adapter member selected depending on the threading and the size of drain hole of the oil pan of the different motors. In a presently preferred embodiment, the interchangeable adapter member can also prevent separation from the main adapter member by an adjustment screw which is disposed in the main adapter member and the seats in the ring of each interchangeable adapter member. An O-ring is also preferably installed on the interchangeable adapter member where it engages with the drain opening of the engine oil pan to prevent leakage of fluid to the connection between the interchangeable adapter member and the oil pan drainage hole. . These and other aspects and advantages of the invention become apparent from the following detailed description, and accompanying drawings, which illustrate by way of example the features of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 schematically illustrates the engine cleaning system in operation, including the cleaning apparatus, a motor, and the adapters; Figure 2 is a partial sectional view of the oil filter hole of the engine; Figure 3 is a schematic cross sectional view of one embodiment of an oil filter orifice adapter assembly of the invention; Figure 4 is a cross-sectional elevation view of a main adapter of the filter orifice adapter assembly of Figure 3 taken through line 4-4 of Figure 5; Figure 5 is a plan view of the main adapter of Figure 4; Fig. 6 is a cross-sectional elevation view of a secondary adapter of the adapter fitting of the filter orifice of Fig. 3; Figure 7 is a plan view of the secondary adapter of Figure 6; Fig. 8 is a plan view of a second preferred embodiment of a secondary adapter of the adapter fitting of the filter orifice of Fig. 3; Figure 9 is a cross sectional elevation view of the secondary adapter of Figure 8; Fig. 10 is a schematic side elevational view of the main adapter member and an interchangeable adapter member of the drainage hole adapter system of the oil pan of the invention; Figure 11 is a front elevational view of the main adapter member of Figure 10; Figure 12 is a side elevational view of an interchangeable adapter member for use with the main adapter member of the drainage hole adapter system of the oil pan of the invention; Fig. 13 is a cross sectional view of the interchangeable adapter member of Fig. 12, taken along line 13-13; and Figure 14 is a side elevation view of another interchangeable adapter member for use with the main adapter member of the drainage hole adapter system of the oil pan of the invention.

DETAILED DESCRIPTION OF THE PREFERRED MODALITIES In order to remove sediment from an internal combustion engine, a motor cleaning apparatus can be used to circulate a cleaning fluid through the engine and the oil pan from which the engine oil has been drained. The area of an engine compartment can impose strict space limitations on an adapter assembly connected between the cleaning apparatus and the drain hole to the engine oil pan. As illustrated in the drawings, the invention is accordingly an embodiment in an improved oil pan drainage hole adapter system for an engine cleaning system for circulating cleaning fluid through an internal combustion engine to clean the engine. Internal combustion engine. With reference to Figure 1, a motor cleaning apparatus 20 for cleaning the lubrication system of an internal combustion engine 22 including a conduit or hose 24 connected to the fluid supply from the cleaning apparatus to the engine 22 for a oil filter orifice adapter fitting 26, and a second conduit or hose 28 that returns the cleaning fluid to the cleaning apparatus by means of the oil pan drain hole adapter assembly 30 which is connected to the oil orifice. draining the engine oil pan. The operating components of the cleaning equipment and the engine are neither illustrated nor described in detail since they are well known, are of a conventional structure and do not form a part of the present invention. However, a conventional cleaning apparatus 20 normally contains the cleaning fluid, it is usually a known cleaning solution, which is pumped from the cleaning apparatus and is supplied by the hose 24 to the motor. The return of the "dirty" cleaning fluid is drained back to the cleaning apparatus by the hose 28. The cleaning apparatus includes appropriate electrical controls, not illustrated, to start the operation, and an electronic digital computer to control the operation of the diverse controls and the duration of the cleaning treatment. The oil filter hole usually includes a first oil passage in the engine block _ to leak oil from the oil filter hole to the crankshaft and other internal components of the engine and a second oil passage to leak fluid from the oil pan. oil and the oil pump to the oil filter hole. The cleaning apparatus normally releases a volume of cleaning fluid through a first conduit to the oil filter orifice, and receives cleaning fluid used through a second conduit from the drain hole of the oil pan. The motor 22 includes an engine block 32 which contains a cylindrical head 34 and a valve cover 36. An oil pan 33 is secured to the lower end of the engine. A crankshaft 40 within the engine block receives oil from step 42. Similarly, valves and other components within the engine block include the arrangement of the piston cylinder that receives lubricating oil through a second oil passage 44. The Oil is supplied to steps 42 and 44 through step 46, from which the preceding steps are divided. The oil pan is provided with a drain hole of the oil pan 48, which has a threaded opening. In normal engine operation, a threaded drain plug, not shown, is screwed into place to seal the drain pan and removed only when you want to use the engine oil drain. An oil pump 50 located inside the oil pan 38 is connected by a fluid passage 52 to an oil filter hole 54. In normal operation of the engine a conventional oil filter, not shown, is connected to this orifice. The engine oil is pumped by the pump 50 from the oil pan 38 via the conduit 52 through the filter, the filter and the flows coming out by means of the conduits 46, 42 and 44 in the engine, allowing the filter remove particulate material and other impurities that may be contained in the oil before reaching the crankshaft 40 and other engine components. The oil filter hole of most modern American automobiles is desired for filters of the independent turning type, such as the FL-1A type sold under the Motorcraft brand. As shown in the partial sectional view of FIG. 2, such an oil filter orifice design 54 contains an annular skirted seal surface 56 surrounding a projecting hollow central support 58, a portion of a passageway 46 is defined in FIG. the engine block. Step 46 is usually divided into steps 42 and 44, as shown in Figure 1. Another step 52 in the engine block is located between the bracket 58 and the skirt-edged surface 56. The hollow support provides a step of oil in the engine block and serves as a mounting bracket for the spin oil filter. The conventional oil filter comprises a sealed cartridge, which contains a threaded central passage, adapted to be screwed into the oil filter hole mounted on the support, and contains other peripheral passages of the central passage, intended for a fluid communication with a passage in the oil filter hole.

The engine cleaning system comprises an adapter system that includes an oil filter adapter assembly and an orifice adapter assembly of the oil sump drain crankcase, which is illustrated in Figures 3 to 14 of the drawings. The adapter assembly of the oil filter orifice associated with the cleaning apparatus preferably includes a universal coupling member or base, so variously called, a main adapter kit, and a set of secondary adapters. By forming an oil filter hole adapter assembly for a particular motor application, a main adapter of the correct size for adapting the oil hole of the particular motor of the mounted support is selected from the equipment and mounted to the universal coupling member. The size of the main adapters is to attach to the threaded mounting brackets of the oil filter of various types and models of automobiles and divide the flow of cleaning fluid from the side entry into different divisions in the lateral outlet of the adapter element as described later in more detail. Secondary adapters are used to compensate seal surfaces of the annular oil hole of different sizes in examples where the main adapter does not fit the ring. Each secondary adapter is mounted on any of the main adapters. With reference to Figure 3, the oil filter adapter assembly includes a base or a universal adapter coupled, so variously called, formed in two parts, the base members 60 and 62, a main adapter 64, sometimes referred to as an oil filter orifice holder adapter, and a secondary adapter 68, sometimes referred to as an oil filter orifice outer diameter adapter. The combination of the base members 60 and 62, and the main adapter 64 comprise the adapter assembly of the primary oil filter 66. Each of the above are formed of metal, suitably aluminum. In general, the coupled adapter, as well as the attached adapters, has a generally cylindrical shape to the outer surface. These elements are assembled together in consecutive order in packaged relationship, as will be described further below. The individual portions of the oil filter hole adapter assembly define an internal fluid passage from the inlet tube 70 and through the mounting, which extends laterally, mostly along the axis 72, and dividing the adapter 64 in essentially two steps the first of which is the major central passage 74 along the axis 72, which is finally engaged through the passage in the cavity of the oil filter orifice mounting bracket, and the second the which extends through the smaller openings, only two of which 76a and 76b, are illustrated in the figure, which are coupled to the secondary passage in the oil filter orifice. The base portion 60 contains Tin inlet tube fitting 78 which is connected to the first conduit 24 of the cleaning equipment. The tube adapter is internally driven by forming the threading of the tube in a passage oriented orthogonal to the axis of the base portion, which intersects the axially extending passage 74. An axial protrusion extending into the male circular cavity of the coupling 80 extending in the engagement coupling within a corresponding cylindrical fortified portion of the complementary base member 62, the female portion of the coupling between the two portions to provide a safe fluid passage. With the exception of step 70 and an adjusting screw 82 and the screw pitch of the above, discussed hereinafter, the coupling geometry is generally symmetric about the center line or the axis 72. An annular groove 84 in the outer wall of the cylindrical portion 80 circumscribed to the outer peripheral surface, which is, the slot that extends over the pitch axis. The complementary member 62 contains a threaded passage extending through the outer wall orthogonal to the passage axis in an axial position which rests in the slot 84. With the two members assembled together, an adjusting screw 82 is screwed into the threaded passage and screwed down extending into the slot 84. This serves to prevent the two coupling parts separated by being separated. It also allows the two members to rotate relative to each other, since the end of the adjusting screw travels along the peripheral groove. With the pivotable mounting between the coupling elements, one can be fixed to the hose 24 and rotate the base member 60 while helping to install the oil filter orifice adapter assembly in situations where there is limited cleaning and / or obstructions in the engine compartment of the automobile.

Because the universal coupling is formed in two parts as described, a potential fluid leakage path exists at the junction between these two elements. As a further feature of the invention, the base member incorporates a rotating collar, a conventional sealing device for rotating members. By forming the collar, the inner cylindrical wall of the member 62 contains an annular groove axially located within the female coupling portion thereof which circumscribes the portion 80 of the complementary base member. An O-ring seal 86 sits within this groove and frictionally couples the outer surface of the male member 80 as well as the walls of the groove. The seal serves to prevent fluid in the internal exhaust passage of the coupling parts. It also allows one of the base members 60 and 62 to rotate relative to the other, whereby during rotation such a base member slides along the seal surface. The right end coupling member 62 is widened to a wider diameter. The right surface edge of which the short section contains a peripherally extending groove which in turn sits on a ring seal 0 88, which in turn is sealed against a confronting edge of the main adapter 64, mounted at same as it was illustrated. Referring to Figures 3, 4 and 5, the main adapter 64 is a generally disk-shaped member, usually formed of aluminum, which contains a cylindrical protruding portion 90 or a hub having a threaded outer surface 92 for connection to a correspondingly threaded portion of the base member 62, illustrated in Figure 3. A circular edge portion for the main adapter that Dordea the outer edge is flat in geometry so that, when assembled to the coupling member 62, the surface provides a better seal for ring seal O 88 in the base portion. On the opposite side, the main adapter 64 includes a ring seal O 94. The ring seal O sits within a groove or slot 96, so variously called, visible in figure 5, which is formed inside and recessed from the outer surface of the edge and circulates peripherally to the rear face of the main adapter. A plurality of the first split plug receptacles 98 also formed within and recessed from the outer surface of the edge to receive the first ends of a corresponding number of division pins 100 or pressure adjusting or friction fit coupling pins . A secondary adapter 68 with a corresponding plurality of the second split pin receptacles 102 for receiving the second ends of the split pins in a low tolerance slidable fit which allows the "secondary adapter to be secured between the filter hole of the motor and the primary adapter assembly, and conforms to the primary adapter mount, so that the connection between the primary and secondary adapters and the motor filter hole does not get stuck or close. While the two split pins are preferably used to fit the primary adapter assembly to the secondary adapter, the additional split pins can also be used. The cylindrical hub 90 on the rear face of the main adapter surrounds a concave shaped portion recessed from the front face. A larger circular axially extending passage 75 is located within the main adapter, which extends through the bottom of the recessed portion in a concave shape. Four axially identical extending steps 76a, 76b, 76c and 76d are systematically distributed over and equidistant from the central passage 75.

It should be appreciated that the central passage 75 is greater in the cross sectional area than any of the smaller passages 76a-76d, and this step 46 through the oil filter mounting bracket 58, is also greater than any of these minor steps. During the operation in which the oil filter orifice adapter is mounted to the oil filter mounting bracket with the step 75 threadedly secured to the threaded outer of the oil hole mounting bracket, in the flow of the cleaning fluid through the cross-sectional area of the central passage, the cross-sectional area of the passage 46 in the oil filter mounting bracket, Al, is essentially desired, to be larger than the collective flow cross-sectional areas of all these minor steps, A2, A3, A, and A5, in total. The flow rate selected between the flow through the cross-sectional area of the central passage, Al, defined by the cavity of the mounting bracket, to the flow through the total cross-sectional areas of the individual minor passages, is normally approximately 4: 1. The main adapter 64 is one of a set of such parts, all of which can be attached to the universal coupling 62. Six or more such adapters are normally employed, differing from each other essentially in the size of the central passage 75 and the size of the peripheral steps 76a-76d. The same flow rate is normally used in all the main adapters, and thus the selected or otherwise derived flow rate is constant. The diameter, configuration and conductance of the adapter passages serve as a means to regulate or control the relative distribution and the flow of cleaning fluid is pumped from the cleaning equipment to one side of the adapter as between the engine channels directed to the oil pump and those oil passages directed to the main components of the engine. While four minor steps are used in this mode, it is recognized that in other modalities, the different numbers of the minor steps can be used. It is recognized that perhaps some model of a previous adapter, which must also contain at least one central and outer passage in the adapter, may contain a flow rate between the cross-sectional areas falling within the range of 2 to 8, described above and, of course, may contain one that, luckily, would have a ratio of four, purely by chance, even if the present of the applicant has not investigated and / or verified any previous adapter, but for knowledge of the applicant's present, any proportion can be given, the identical ratio is not maintained along the set of adapters associated with such cleaning apparatus. In those examples, as described above in the background for this specification, for a previously provided cleaning apparatus, containing multiple adapters, the flow rate for the cleaning fluid varies from motor to motor with different adapters in the cleaning apparatus . The next step in the montage is to select and install the secondary adapter, 68. The adapter 68 is one of a set "of such adapters that include other adapters, as illustrated in Figures 6-9. Secondary is of a different outer diameter and has a different diameter of the ring seal 0, suitable for the different outer diameters of the oil filter hole of different cars The secondary adapter contains the large central opening 103, and also can not obstruct the fluid which exits the two sets of passages in the main adapter 64. And each of the adapters contains an annular sealing surface which is flat and, when mounted abutting against the ring seal 0 94 of the main adapter. Annular sealing surface of the larger secondary adapters is preferably formed as an annular channel or a cavity to allow the outer edge of the adapts The main receiver is received in the channel in gear coupling. With reference to Figures 3 and 6-9, the secondary adapter is generally a short disk-shaped cylinder formed of metal, usually aluminum, containing a short cylindrical non-threaded portion or hub 104, projecting from the front face, which serves as a male coupling for coupling to the adapter main previously selected for assembly. A ring seal 106 (shown in FIG. 3) is carried by a circumferential groove 108 in the face of the secondary adapter. For a given car, the secondary adapter is selected so that the 0-ring seal is similar in diameter and is coupled to the sealing surface of the oil filter hole. Thus, a variety of 0-ring seals of different diameter and the supplementary adapter, also of different diameter, can be provided with the cleaning equipment. This allows the team to serve the vast majority of automobiles. The present invention is provided for an oil pan drainage hole adapter assembly. With reference to Figures 10-13, the crankcase drain hole adapter assembly 110 includes a main adapter member 112 having a front end or inlet end 114, an outlet end 116, and an internal flow passage 118. which connects the input end and the output end in fluid communication. The main adapter member is manufactured so that the orientation of the connection to the various interchangeable adapter members 120 connecting to the drainage hole of the oil pan is identical, and so that the orientation angle of the interchangeable adapter members to the longitudinal axis is fixed. of the main adapter member. In a present preferred embodiment, this orientation angle is 90 degrees, although the head of the main adapter member may be formed, if desired, to present another similar appropriate angle of orientation. With reference to Figures 12, 13 and 14, the interchangeable adapter members have an end with a short cylindrical projecting end portion or hub 122 having threads 124 for engaging and engaging with the corresponding threads in the drainage hole of the oil pan . An O-ring 126 is also preferably disposed on the hub to prevent filtration of the fluid into the drain hole of the engine oil pan. The interchangeable adapter members have an opposite end portion 128 that forms a ring 130, which fits on the inlet end of the right angle of the main adapter member, through a ring 0 132 disposed at the inlet end of the main adapter member to provide a seal to prevent fluid seepage. The ring has a plurality of openings 134 extending through the annulus to the inner conduit 136 of the interchangeable adapter member extending therethrough along the axis 138 of the interchangeable adapter member, to allow fluid to flow from it. interchangeable adapter member at the entrance of the main adapter member. In a present preferred embodiment, the ring has three openings spaced apart at approximately 120 degree intervals, although another number of openings may also be appropriate. When the main adapter member and the interchangeable adapter member are assembled, the oil pan drainage hole assembly allows fluid to flow from the interchangeable adapter member, through the internal flow passage to the outlet of the main adapter member and to the Tube Fitting or Hose Adjustment 142. The tube fitting is generally approximately transverse to the axis of the interchangeable adapter member and the main passage of the oil pan drain hole. The tube fitting is connected to the return conduit or hose 28. An O-ring 146 is preferably disposed in the outlet tube which is adjusted to seal the connection against fluid filtration. A set screw 148, which in a preferred embodiment can be a butterfly screw, for example, is screwed into an opening 149 in the main adapter member so that when an interchangeable adapter member is inserted into the main adapter member, the end of the adjusting screw extends inside and travels in the interchangeable adapter member ring, preventing the interchangeable adapter member from being dislodged from the main adapter member. An O 150 ring prevents filtration of the fluid from the main adapter member and air filtration in the main adapter member through the threads of the adjusting screw. A nozzle 152 is preferably installed in the opening in the main adapter member to provide threads for the adjusting screw. An external retaining ring 154 is also preferably inserted into the adjusting screw opening in the main adapter member to prevent the adjustment screw from being removed from the main adapter member. As an alternative to the external retaining ring 154, the following methods can be used to prevent the adjusting screw from being removed from the main adapter: 1. The end of the adjusting screw 148 which extends into the ring 130 can be flattened to Increase the diameter of the adjustment screw end by approximately 0.01 cm (0.002 inch). 2. The two bottom threads of the adjusting screw may be damaged to prevent the set screw from being removed from the main adapter member. It will be evident from the foregoing that while the particular forms of the invention have been illustrated and described, the various modifications can be made without departing from the st and scope of the invention. Accordingly, it is not desired that the invention be limited, except by the appended claims.

It is noted that in relation to this date, the best method known by the applicant to carry out the aforementioned invention, is the conventional one for the manufacture of the objects or products to which it refers. Having described the invention as above, property is claimed as contained in the following:

Claims (14)

1. An oil sump drainage hole adapter assembly for a motor cleaning system for the circulation of cleaning fluid through an internal combustion engine for engine cleaning, a crankcase drainage hole adapter assembly characterized because it comprises: a main adapter member having a longitudinal axis, an inlet end, an outlet end, and an internal flow passage connecting the outlet end and the inlet end "in fluid communication; and an interchangeable adapter member; having a first cylindrical end portion threaded to engage and engage with a corresponding threaded portion in the drain hole of the oil pan, an opposite end portion forming a ring, and an inner lumen connecting the first cylindrical end portion coiled and the opposite end portion in fluid communication, the ring has a surface defining a plurality of openings extending through the ring to the internal lumen of the interchangeable adapter member to allow flow to flow from the interchangeable adapter member to the entrance of the main adapter member, the opposite end portion of the interchangeable adapter member is received at the outlet end of the main adapter member at a fixed angle of orientation with respect to the longitudinal axis of the main adapter member.

2. The assembly according to claim 1, characterized in that the main adapter member has a surface defining an opening of the adjusting screw, and additionally includes an adjustment screw having a screwed portion received in the opening of the adjusting screw of the adapter member such that when the interchangeable adapter member is inserted into the inlet end of the main adapter member, the adjusting screw extends into and travels in the interchangeable adapter member ring, preventing the interchangeable adapter member from being dislodged from the adapter member. principal.

3. The assembly according to claim 1, characterized in that the ring has three openings spaced apart.

4. The assembly according to claim 1, characterized in that the fixed angle of orientation of the interchangeable adapter member is approximately 90 degrees.

5. The assembly according to claim 1, characterized in that the ring fits through an O-ring disposed at the inlet end of the main adapter member to provide a seal to prevent fluid seepage.

6. The assembly according to claim 1, characterized in that the outlet end of the main adapter member comprises an adjustment connected to the return duct, the adjustment is approximately transverse to the axis of the interchangeable adapter member and the main passage of the drain orifice of the crankcase oil.

7. The assembly according to claim 1, characterized in that an O-ring is arranged in the first cylindrical end portion of the interchangeable adapter member to prevent the filtration of the fluid into the drainage hole of the oil sump of the engine.

8. The assembly according to claim 2, characterized in that the adjustment screw comprises a butterfly screw.

9. The assembly according to claim 2, characterized in that it additionally comprises a ring O disposed on the adjusting screw to prevent filtration of the fluid of the main adapter member and the filtration of air in the main adapter member through the opening of the screw. Adjustment of the main adapter member.

10. The assembly according to claim 9, characterized in that it additionally comprises a threaded nozzle arranged in the opening of the adjusting screw in the main adapter member to provide threads for receiving the adjusting screw.

11. The assembly according to claim 10, characterized in that it additionally comprises an external retaining ring disposed in the opening of the adjusting screw in the main adapter member to prevent the screw from being removed from the main adapter member.

12. The assembly according to claim 1, characterized in that the interchangeable adapter member comprises a plurality of interchangeable adaptation members.

13. The assembly according to claim 1, characterized in that a conduit is provided which is connectable to the outlet end of the main adapter member for conducting the flow of fluid from the main adapter member.

14. The assembly according to claim 1, characterized in that the opposite end portion of the interchangeable adapter member fitted through a ring 0 disposed at the inlet end of the main adapter member to provide a seal to prevent fluid seepage.