Air cleaner for automobile engine
The air filter, with its multi-directional air intake structure and easy-to-remove design, solves the problem of frequent filter replacement caused by a single air intake, achieving efficient air filtration and component protection, and improving engine lifespan and maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 沧州洁帝欧滤清器有限公司
- Filing Date
- 2025-10-21
- Publication Date
- 2026-07-24
AI Technical Summary
Current automotive engine air filters only have a single external air inlet, which leads to frequent filter element replacements. Improper operation can easily damage the internal structure, affecting the filtration effect and engine life.
The design incorporates a multi-directional air intake structure and a convenient disassembly and assembly adjustment mechanism, including a ring frame, adjustment mechanism, and auxiliary mechanism. A multi-pore protective cover prevents large particulate impurities, and the auxiliary structure facilitates quick replacement and protection of the filter element.
It achieves thorough air filtration, reduces the risk of component damage, extends service life, and improves maintenance efficiency and the stability of filtration performance.
Smart Images

Figure CN224550248U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of air filters, and more particularly to an air filter for automobile engines. Background Technology
[0002] A car engine is a highly precise machine, and even the smallest impurities can damage it. Therefore, air must pass through a finely filtered air filter before entering the cylinders. The air filter is the engine's guardian, and its condition directly affects the engine's lifespan.
[0003] During engine operation, a large amount of air is drawn in. If the air is not filtered, suspended dust in the air will be sucked into the cylinder, accelerating the wear of the piston assembly and cylinder. Larger particles entering between the piston and cylinder can cause severe "cylinder scoring," which is especially serious in dry and sandy working environments. The air filter is installed in front of the carburetor or intake manifold to filter out dust and sand particles from the air, ensuring that sufficient clean air enters the cylinder. Car engines are very precise machines, and even tiny impurities can damage them. Therefore, air must pass through the fine filtration of the air filter before entering the cylinder. The condition of the air filter directly affects the lifespan of the engine. If a dirty air filter is used while driving, it will cause insufficient air intake, incomplete fuel combustion, unstable engine operation, reduced power, and increased fuel consumption. Therefore, it is essential to keep the air filter clean.
[0004] Air filters have the following drawbacks. To ensure the filtering effect of the air filter in a car engine, but with only a single external air inlet, the filter element must be replaced regularly. When opening the top cover of the air filter to replace the filter element, due to the large number of outer casing parts or the snap-fit installation, improper operation may damage other internal structures of the air filter, affecting the working efficiency of the air filter and the operation of the engine. Therefore, an air filter for car engines is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an air filter for automobile engines, aiming to improve the existing technology that, in order to ensure the filtration effect of automobile engine air filters, there is only a single external air inlet, which requires the air filter element to be replaced regularly.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: an air filter for an automotive engine, comprising an engine intake manifold and a ring frame, wherein the ring frame is fixedly connected to the top outer wall of the engine intake manifold, an adjustment mechanism is provided on the ring frame, an auxiliary mechanism is provided on the adjustment mechanism, the adjustment mechanism includes a mounting groove, the mounting groove is opened in the top inner wall of the ring frame, a support bar is fixedly connected to the top outer wall of the ring frame, a top frame is fixedly connected to the top outer wall of the support bar, a threaded ring is threadedly connected to the top inner wall of the top frame, a top cover is fixedly connected to the top outer wall of the threaded ring, a bolt is threadedly connected to the top inner wall of the top cover, a limit hole is opened in the top inner wall of the top frame, and a hand support groove is opened in the top outer wall of the top cover.
[0007] As a further description of the above technical solution: the auxiliary mechanism includes a threaded groove, which is formed on the outer side wall of the engine intake manifold. A movable frame is threadedly connected to the outer side wall of the threaded groove. A multi-filter hole protective cover is fixedly connected to the top outer wall of the movable frame. The outer side wall of the movable frame has a groove, and the bottom outer wall of the movable frame has a directional mark.
[0008] As a further description of the above technical solution: there are two mounting slots, the inner diameter of the two mounting slots is adapted to the outer diameter of the first filter screen cylinder and the second filter screen cylinder, and the two mounting slots are respectively opened on the top inner wall of the ring frame.
[0009] As a further description of the above technical solution: the threaded ring contacts the top outer wall of the first filter screen cylinder, the threaded ring contacts the top outer wall of the second filter screen cylinder, and the bolt is threadedly connected to the inner wall of the inner ring of the limiting hole.
[0010] As a further description of the above technical solution: a silicone pad is fixedly connected to the top outer wall of the hand support slot.
[0011] As a further description of the above technical solution: the multi-filter protective cover is in contact with the outer side wall of the ring frame and the support bar respectively, and the outer side wall of the groove is fixedly connected with a frosted pad.
[0012] As a further description of the above technical solution: a display coating is fixedly connected to the bottom outer wall of the directional marker.
[0013] This utility model has the following beneficial effects:
[0014] 1. In this utility model, by adopting a multi-directional air intake filter structure, the air can be fully filtered to ensure air purity. At the same time, with the help of the easily detachable adjustment structure design, the replacement of filter components is simple and easy to operate, effectively reducing maintenance time and reducing the risk of component damage or loss due to frequent disassembly.
[0015] 2. In this utility model, by setting an auxiliary protective structure, large hard particles in the outside air can be blocked in advance, preventing them from directly impacting the core filter component and causing damage, thereby maintaining the stability of the filtration effect and extending the service life of the filter component. Attached Figure Description
[0016] Figure 1 This is a schematic front view of an air filter for an automobile engine according to the present invention.
[0017] Figure 2 This is a split diagram of an air filter for an automobile engine proposed in this utility model;
[0018] Figure 3 This is a schematic diagram of the adjustment mechanism of an air filter for an automobile engine proposed in this utility model;
[0019] Figure 4 This is a schematic diagram of the auxiliary mechanism of an air filter for an automobile engine proposed in this utility model.
[0020] Legend:
[0021] 1. Engine intake manifold; 2. Ring frame; 3. Adjustment mechanism; 31. Mounting slot; 32. Support bar; 33. Top frame; 34. Threaded ring; 35. Top cover; 36. Bolt; 37. First filter screen; 38. Second filter screen; 39. Limiting hole; 310. Hand support slot; 4. Auxiliary mechanism; 41. Threaded groove; 42. Movable frame; 43. Multi-filter hole protective cover; 44. Raised and recessed groove; 45. Indicator mark. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Reference Figures 1-3This utility model provides an embodiment of an air filter for an automotive engine, comprising an engine intake manifold 1 and a ring frame 2. The ring frame 2 is fixedly connected to the top outer wall of the engine intake manifold 1. An adjustment mechanism 3 is provided on the ring frame 2, and an auxiliary mechanism 4 is provided on the adjustment mechanism 3. The adjustment mechanism 3 includes a mounting groove 31 for precisely placing a first filter cylinder 37 and a second filter cylinder 38, ensuring the stability of their installation position. The mounting groove 31 is located on the top inner wall of the ring frame 2. A support bar 32 is fixedly connected to the top outer wall of the ring frame 2, and a top frame 33 is fixedly connected to the top outer wall of the support bar 32. The frame 33 is used to install the threaded ring 34 and cooperates with the ring frame 2 to form the installation cavity of the filter component. The top inner wall of the top frame 33 is threadedly connected to the threaded ring 34, and the top outer wall of the threaded ring 34 is fixedly connected to the top cover 35. The top inner wall of the top cover 35 is threadedly connected to the bolt 36. The bolt 36 is used to fix the top cover 35 to the top frame 33 to prevent the threaded ring 34 from loosening accidentally and to enhance the stability of the overall structure. The top inner wall of the top frame 33 is provided with a limit hole 39, and the top outer wall of the top cover 35 is provided with a hand support groove 310. The hand support groove 310 is convenient for the operator to place their hands, increases the grip friction, and facilitates the rotation of the top cover 35.
[0024] Reference Figures 2-4 There are two mounting slots 31. The inner diameter of the two mounting slots 31 is adapted to the outer diameter of the first filter cylinder 37 and the second filter cylinder 38. The two mounting slots 31 are respectively opened on the top inner wall of the ring frame 2. The threaded ring 34 contacts the top outer wall of the first filter cylinder 37 and the top outer wall of the second filter cylinder 38. The bolt 36 is threaded to the inner wall of the inner ring of the limiting hole 39. A silicone pad is fixedly connected to the top outer wall of the hand support slot 310. The silicone pad increases the friction between the hand and the hand support slot 310, improves the grip comfort, and prevents the hand from slipping.
[0025] Reference Figures 3-4The auxiliary mechanism 4 includes a threaded groove 41, which is formed on the outer side wall of the engine intake manifold 1. A movable frame 42 is threadedly connected to the outer side wall of the threaded groove 41. A multi-filter protective cover 43 is fixedly connected to the top outer wall of the movable frame 42. The multi-filter protective cover 43 can block large hard particles and impurities from the outside while allowing air to pass through, thus protecting the first filter screen 37. The outer side wall of the movable frame 42 has a groove 44, which increases the friction between the hand and the movable frame 42. The movable frame 42 is designed for easy installation and disassembly by the operator. The bottom outer wall of the movable frame 42 is provided with a directional mark 45. The multi-filter protective cover 43 is in contact with the side outer walls of the ring frame 2 and the support bar 32. The side outer wall of the groove 44 is fixedly connected with a frosted pad, which further increases the friction of the groove 44 and prevents the hand from slipping when rotating the movable frame 42. The bottom outer wall of the directional mark 45 is fixedly connected with a display coating, which makes the directional mark 45 more conspicuous and easy for the operator to quickly identify.
[0026] Working principle: Ambient air enters from multiple directions through the first filter cylinder 37 for filtration, followed by secondary filtration through the second filter cylinder 38, ensuring excellent air purity. The air then enters the engine intake manifold 1, connecting to the engine. The first filter cylinder 37 allows for omnidirectional air intake, reducing the need for frequent disassembly and maintenance due to the small area of a single filter port. Frequent disassembly of the overall structure can easily damage or lose internal components. During disassembly, the bolt 36 is rotated to separate from the limiting hole 39, and then the hand support groove 310 is rotated to make the top cover 35 rotate. Rotating the top cover 35 separates the threaded ring 34 from the inner wall of the top frame 33, allowing the first filter cylinder 37 and the second filter cylinder 38 to be removed directly. The overall operation is simple and not easily damaged, and it is convenient for personnel to quickly replace the filter, reducing maintenance time and improving work efficiency. At the same time, when the air filter is in use, by pre-connecting the movable frame 42 with the threaded groove 41, the multi-filter hole protective cover 43 is placed around the support bar 32 to protect against large hard particles and impurities in the outside air. This prevents large particles from directly impacting the first filter cylinder 37 and causing large-area damage, which could lead to failure or reduction of the filtration effect.
[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An air filter for an automobile engine, comprising an engine intake manifold (1) and a ring frame (2), characterized in that: The ring frame (2) is fixedly connected to the top outer wall of the engine intake manifold (1). An adjustment mechanism (3) is provided on the ring frame (2), and an auxiliary mechanism (4) is provided on the adjustment mechanism (3). The adjustment mechanism (3) includes a mounting groove (31), which is located on the top inner wall of the ring frame (2). A support bar (32) is fixedly connected to the top outer wall of the ring frame (2). A top frame (33) is fixedly connected to the top outer wall of the support bar (32). A threaded ring (34) is threadedly connected to the top inner wall of the top frame (33). A top cover (35) is fixedly connected to the top outer wall of the threaded ring (34). A bolt (36) is threadedly connected to the top inner wall of the top cover (35). A limit hole (39) is provided on the top inner wall of the top frame (33). A hand support groove (310) is provided on the top outer wall of the top cover (35).
2. The air filter for an automobile engine according to claim 1, characterized in that: The auxiliary mechanism (4) includes a threaded groove (41), which is opened on the outer side wall of the engine intake manifold (1). A movable frame (42) is threadedly connected to the outer side wall of the threaded groove (41). A multi-filter hole protective cover (43) is fixedly connected to the top outer wall of the movable frame (42). A groove (44) is opened on the outer side wall of the movable frame (42). A directional mark (45) is opened on the bottom outer wall of the movable frame (42).
3. An air filter for an automotive engine according to claim 1, characterized in that: There are two mounting slots (31). The inner diameter of the two mounting slots (31) is adapted to the outer diameter of the first filter cylinder (37) and the second filter cylinder (38). The two mounting slots (31) are respectively opened on the top inner wall of the ring frame (2).
4. An air filter for an automotive engine according to claim 1, characterized in that: The threaded ring (34) contacts the top outer wall of the first filter cylinder (37), the threaded ring (34) contacts the top outer wall of the second filter cylinder (38), and the bolt (36) is threaded into the inner wall of the inner ring of the limiting hole (39).
5. An air filter for an automotive engine according to claim 1, characterized in that: A silicone pad is fixedly connected to the top outer wall of the hand support groove (310).
6. An air filter for an automotive engine according to claim 2, characterized in that: The multi-pore protective cover (43) is in contact with the outer side wall of the ring frame (2) and the support (32), respectively, and the outer side wall of the groove (44) is fixedly connected with a frosted pad.
7. An air filter for an automobile engine according to claim 2, characterized in that: The bottom outer wall of the directional marker (45) is fixedly connected with a display coating.