Construction arrangement applied to a filter for internal combustion engines.

Description

/ 7 Construction arrangement applied to a filter for internal combustion engines. TECHNICAL FIELD

[001] This utility model patent application pertains to the automotive industry segment, encompassing parts used in cars, trucks, motorcycles, tractors, agricultural machinery, among others. The air intake filter plays a crucial role in the operation of internal combustion engines in vehicles, simultaneously ensuring the preservation of the technical conditions of these engines. It contributes to more efficient combustion, reducing pollutant emissions and optimizing engine performance. Air intake filters are essential for retaining impurities, eliminating the presence of water, and ensuring cleaner and more efficient operation of engines and their peripherals. There is no need to purchase a separate safety filter as it is already incorporated into a single unit. HISTORY OF THE TECHNIQUE

[002] In early internal combustion engines (late 19th and early 20th centuries), there were no air filters. The low efficiency of the engines and the absence of paved roads made dirt a constant problem. Dust was sucked in along with the air, reducing the engine's lifespan and requiring frequent maintenance.

[003] The first air filters were rudimentary solutions, such as metal meshes or layers of fabric. These devices could retain larger particles, but were not very effective at capturing fine dust. They were mainly used in industrial vehicles, such as tractors and agricultural machinery, which operated in very dusty environments.

[004] In the 1930s and 1940s, oil bath filters emerged. Air passed through a layer of oil, which captured dirt particles. These filters were Petition 870240109518, dated 12 / 23 / 2024, page 5 / 17 / 7 widely used in World War II vehicles due to their efficiency in harsh conditions.

[005] Advances in materials brought about the disposable paper filter, which was folded like an accordion, increasing the filtering area. It offered a balance between efficiency, cost, and ease of maintenance.

[006] This technology quickly became popular and remains in use in passenger vehicles today. They continue to evolve to ensure air intake with particle retention, for efficient combustion, fuel economy and reduced emissions. State of the Art Analysis

[007] In the current context of air filtration for combustion engines in motor vehicles, agricultural machinery and construction equipment, the implementation of two distinct elements stands out: the primary filter and the secondary filter. In the market, two manufacturing methods for the primary filter are identified, both aligned with the guidelines of vehicle manufacturers.

[008] In the first type, the primary element consists of upper and lower steel covers, rubber seals, a cellulose or polyester filter medium, and an outer and inner body made of expanded metal sheet.

[009] In the second approach, the primary element has polyurethane covers, which also perform the sealing function, a cellulose filter medium, and an external and internal body made of expanded steel sheet.

[010] The secondary element, although sharing some constructive characteristics with the primary element, has a smaller diameter, allowing its insertion inside the primary element and forming the conventional filtration system. During maintenance, it is recommended to replace the assembly to avoid overloading the secondary element, ensuring adequate airflow, engine power, and reduced pollutant emissions.

[011] In adverse environments, such as unpaved roads, agricultural operations and mining activities, the neglected replacement of the secondary element can Petition 870240109518, dated 12 / 23 / 2024, page 6 / 17 / 7 result in damage to the engine. However, in conventional road scenarios, some fleet owners choose not to use the secondary element, considering it an unnecessary cost, given its predominant use on paved road networks.

[012] Research conducted in specialized databases revealed documents relating to filter elements, such as document no. PI 0013819-3, which deals with an INTERSECTED CONE-SHAPED AIR FILTER FOR AN INTERNAL COMBUSTION ENGINE. This invention relates to an intersected cone-shaped air filter (1) for focusing airflow within an automotive internal combustion engine, substantially comprising a hollow body (2) of specified thickness, the dipped side of which 2 <198> a 7 <198> with respect to the vertical geometric axis, and a locking ring (3) that is fixedly disposed along the outer periphery of the upper and lower ends of the filter body (2) to stiffen the filter body construction. The air filter body is made of longitudinally symmetrical folded filter paper materials whose thickness regulates that of the air filter body (2).

[013] Document No. MU 8002995-7, which deals with an AIR FILTER FOR AN INTERNAL COMBUSTION ENGINE, describes an air filter for an internal combustion engine, provided with a filter cartridge composed of a containment and fixing edge (9) and a main body (10) in folded paper (11), to which, in order to contain protrusions, the paper body is in the shape of a parallelepiped where the longer sides are parallel to the plane defined by the containment edge, and whose shorter sides are parallel to the axis of the air outlet passage (4).

[014] Document no. PI 9102964-3 concerning an INTAKE AIR FILTER FOR THE INTERNAL COMBUSTION ENGINE OF A VEHICLE composed of two filter elements arranged concentrically, one inside the other, with an annular shape, which has an air inlet on the intake side and an outlet for the filtered air and in which a first external filter element is traversed by air from the outside in, the second filter element, configured as a safety cartridge, being disposed inside the said first element, and in which this second filter element is closed on one of the front sides with a closing disc, Petition 870240109518, dated 12 / 23 / 2024, page 7 / 17 / 7 having the other front side of the second filter element facing the air outlet, wherein the second filter element (25) is fixed to the mounting housing (10), in the area of ​​the outlet (12), by means of a thread (28).

[015] Although prior art dealing with filter elements for internal combustion engines can be found, these present arrangements and materials that may impair the user experience and the environment. When using paper filters, the filtering action occurs superficially, requiring one or more layers to retain impurities.

[016] In addition to this, because they use paper in their solutions, the operation of the motors is subject to rapid wear, since water particles or larger impurities quickly damage their structure. This vulnerability increases the need for frequent maintenance and replacement of the filters, generating higher costs for users. Cleaning these filters is also limited due to the fragility of the cellulose, making reuse difficult.

[017] Finally, the frequent disposal of non-reusable filters and the use of other paper support structures causes significant environmental impacts, since the cellulose used in traditional systems is not suitable for efficient recycling, exacerbating the waste problem.

[018] Thus, it is a fact that the documents cited in the paragraphs above, despite belonging to the same field of application, do not present any of the characteristics of the object now improved, thus guaranteeing that it meets the legal requirements for patentability. BRIEF DESCRIPTION

[019] Taking into account all the problems presented in the state of the art, the inventor, who possesses notorious knowledge of the sector, created and developed the aforementioned CONSTRUCTIONAL ARRANGEMENT APPLIED TO FILTERS FOR COMBUSTION ENGINES, which aims to preserve the technical conditions of the engines, eliminating Petition 870240109518, dated 12 / 23 / 2024, page 8 / 17 / 7 impurities and water, promoting cleaner, more efficient operation with less environmental impact.

[020] The objective of the present utility model is to present a filter whose structure has two or more layers, composed of long and short fibers of thermoplastic material. The first outer filtration layer is responsible for retaining larger particles, while the second inner layer has a finer filtration capacity; these layers form a single, highly efficient air filter. This is an ideal filter for application in internal combustion engines of various motor vehicles.

[021] The use of a polymer such as polypropylene in filtration elements, in addition to double-layer protection, provides different benefits. The filtering action of the thermoplastic occurs through depth, having a greater capacity to absorb impurities with a smaller amount of material. Furthermore, due to its hydrophobic characteristics, the material can be subjected to washing with water or compressed air without its layers wearing down.

[022] By repelling water and moisture, and consequently impurities of different sizes, the vehicle's engine is able to operate at high power without the need for constant maintenance or replacements, avoiding high costs. It is a recyclable material after its use, and its more resistant structure eliminates the need for steel plates or additional reinforcements for its support, meaning that the use of polypropylene provides a lower environmental impact.

[023] The present utility model takes into account not only the mechanical and functional qualities, but also the form, arrangement and strategic location of its parts and components which, correctly positioned, brought about an increase in efficiency without incurring any burden on users as it is two in one. DESCRIPTION OF THE FIGURES

[024] To complement the present description in order to obtain a better understanding of the characteristics of the present utility model and in accordance with a Petition 870240109518, dated 12 / 23 / 2024, page 9 / 17 / 7 preferential practical implementation thereof, accompanied by a set of drawings attached, where, in an exemplary, though not limiting, manner, its operation is represented: Fig. 1 shows a top perspective image of the filter element equipped with double filtration (primary and secondary); Fig. 2 provides a front cross-sectional view that reveals the overlapping of the device components; Fig. 3 provides an exploded view of the filter element; and Figure 4 shows the filter element installed in an internal combustion engine of a vehicle. DETAILED DESCRIPTION

[025] With reference to the illustrated drawings, the present utility model patent refers to a CONSTRUCTIONAL ARRANGEMENT APPLIED IN A FILTER FOR COMBUSTION ENGINES, more precisely a filter device (1) for internal combustion engines (2).

[026] According to the present utility model, the device (1) has a cylindrical shape and contains depth filtering elements (3), made of extruded polypropylene, constituting a single piece, with one or more double filtering layers. The primary layer (4) acts as external protection for larger particles, and the secondary layer (5), of smaller diameter, acts as internal protection for retaining finer impurities.

[027] Said device (1) has sealing caps (5), the first (6) positioned at the lower end, and the second (7) at the upper end, acting as barriers to prevent the circulated air from escaping.

[028] It is understood that when the present utility model is put into practice, modifications may be introduced with regard to certain details of construction and form, without this implying a departure from the fundamental principles that are Petition 870240109518, dated 12 / 23 / 2024, p. 10 / 17 / 7 clearly substantiated in the claim framework, thus it is understood that the terminology used was not intended to be limiting. Petition 870240109518, dated 12 / 23 / 2024, p. 11 / 17

Claims

CLAIM 1) CONSTRUCTIONAL ARRANGEMENT APPLIED TO A FILTER FOR ENGINES COMBUSTION, conceives the filter device (1) for internal combustion engines (2); characterized by having a cylindrical shape and containing filter elements (3) with depth, in extruded polypropylene in one piece, constituting a double filtering layer, the primary (4) as external protection, and the secondary (5), of smaller diameter, as internal protection; having sealing caps (5), the first (6) being positioned at the lower end, and the second (7) at the upper end. Petition 870240109518, dated 12 / 23 / 2024, page 12 / 17

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