Adjusting device for vacuum degree of air inlet pipe

Abstract

The utility model discloses an air inlet pipe vacuum degree adjusting device which comprises an air filter and a baffle ring, the air filter is sleeved with the baffle ring, the baffle ring is arranged on the air filter in a sleeving mode, the baffle ring is made of airtight materials, circumferential air inlet holes of the air filter can be shielded, and air is prevented from entering the air filter through the baffle ring. According to the adjusting device for the vacuum degree of the air inlet pipe, the air filter is matched with the baffle ring, so that the circumferential flow area of the air filter is adjusted, and a gas flow field of the air filter passing through the adjusting device for the vacuum degree of the air inlet pipe is the same as a gas flow field of an engine; and the problem of surge of the supercharger caused by flow field change can be effectively relieved.

Description

Technical Field

[0001] The present application relates to the technical field of engine accessories, and in particular to a device for adjusting the vacuum degree of an intake pipe. Background Art

[0002] The vacuum of the engine intake pipe is the absolute value of the difference between the air pressure in the intake pipe and the atmospheric pressure. It is the sum of the negative pressure values formed on the intake pipe when each cylinder of the automobile engine alternately takes in air. The vacuum of the engine intake pipe is a comprehensive technical indicator of the engine and is called the "barometer" of engine performance. If the vacuum of the intake pipe meets the standard, it not only indicates that the sealing performance of the cylinder is good, but also indicates that the ignition performance, valve timing and air-fuel ratio (A / F) basically meet the requirements. By detecting the vacuum of the intake pipe, various faults of the engine can be diagnosed without disassembling it.

[0003] Related technology, to detect the vacuum degree of the engine intake pipe, it is necessary to remove the air filter and connect the intake pipe externally. A butterfly valve is set on the intake pipe. By adjusting the opening of the butterfly valve, the flow area of the intake pipe is adjusted to control the vacuum degree of the engine intake pipe.

[0004] Since the gas flow field after the air passes through the intake pipe and the butterfly valve is different from the air flow field after the air passes through the air filter, it is easy to cause supercharger surge, affecting the reliability of intake pipe vacuum detection.

[0005] Therefore, how to alleviate the problem of supercharger surging during the intake pipe vacuum test to improve the reliability of intake pipe vacuum detection has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0006] The present application proposes a device for adjusting the vacuum degree of an intake pipe, so as to alleviate the problem of supercharger surging during an intake pipe vacuum test and improve the reliability of intake pipe vacuum detection.

[0007] In order to achieve the above-mentioned purpose, the present application provides an intake pipe vacuum adjustment device, comprising an air filter and a baffle ring, wherein the baffle ring is adapted to the shape of the outer peripheral surface of the air filter.

[0008] The air filter is sleeved with the retaining ring, which is used to cover the circumferential air intake holes of the air filter.

[0009] The retaining ring can move along the axial direction of the air filter to adjust the circumferential overlapping area between the retaining ring and the air filter.

[0010] Preferably, in the above-mentioned intake pipe vacuum adjustment device, the length of the retaining ring along the axial direction of the air filter is l, the length of the air filter along its own axial direction is L, and 1 / 3L≤l≤L.

[0011] Preferably, in the above-mentioned intake pipe vacuum degree adjusting device, the number of the retaining rings is at least two, and the sum of the lengths of all the retaining rings does not exceed the length L of the air filter.

[0012] Preferably, in the above-mentioned intake pipe vacuum degree adjusting device, the retaining ring includes two semi-circular rings, and the two semi-circular rings are spliced and connected to form a ring adapted to the shape of the air filter.

[0013] Preferably, in the above-mentioned intake pipe vacuum degree adjusting device, the retaining ring is a rigid ring or a flexible ring.

[0014] Preferably, in the above-mentioned intake pipe vacuum degree adjusting device, the retaining ring is a metal ring, a plastic ring, a ceramic ring, a rubber ring or a wooden ring.

[0015] Preferably, in the above-mentioned intake pipe vacuum degree adjusting device, the inner ring of the retaining ring is a smooth inner ring, and the outer ring of the retaining ring is provided with anti-slip protrusions.

[0016] Preferably, in the above-mentioned intake pipe vacuum degree adjusting device, a seal is provided on the inner ring.

[0017] Preferably, in the above-mentioned intake pipe vacuum degree adjusting device, an installation handle is provided on the outer ring of the retaining ring.

[0018] Preferably, in the above-mentioned intake pipe vacuum degree adjusting device, the thickness of the retaining ring is 5 mm - 20 mm.

[0019] The intake pipe vacuum degree adjusting device provided by the embodiment of the present application includes an air filter and a retaining ring. The retaining ring is sleeved on the air filter. The retaining ring is made of an airtight material and can block the circumferential air intake holes of the air filter to prevent gas from entering the air filter through the retaining ring. The intake pipe vacuum degree adjusting device disclosed in the present application, through the cooperation of the air filter and the retaining ring, not only realizes the adjustment of the circumferential flow area of the air filter, but also the gas flow field of the air filter passing through the intake pipe vacuum degree adjusting device is the same as the gas flow field of the engine itself, and can effectively alleviate the problem of supercharger surge caused by the change of the flow field. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some examples or embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to the provided drawings, and the present application can also be applied to other similar scenarios according to the provided drawings. Unless obvious from the language context or otherwise stated, the same reference numerals in the drawings represent the same structure or operation.

[0021] Figure 1 It is a schematic structural diagram of the air filter and the retaining ring of the present application in cooperation.

[0022] The description of the drawings is as follows:

[0023] 1 - air filter; 11 - circumferential intake holes; 2 - retaining ring. Detailed implementation manners

[0024] The following will further elaborate on the present application in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the related application and not for limiting the application. The described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0025] It should be noted that for the sake of convenience in description, only the parts related to the relevant application are shown in the drawings. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily, as long as the combined technical features are not mutually contradictory. All feasible feature combinations are the technical contents clearly recorded herein. Any one of the multiple sub - features included in the same statement can be applied independently without necessarily being applied together with other sub - features.

[0026] As shown in the present application and the claims, unless the context clearly indicates an exceptional situation, words such as "a", "an", "one", and / or "the" are not specifically singular and may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. An element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, commodity, or device including the element.

[0027] Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B may mean A or B. "And / or" in this article is merely an association relationship describing associated objects, indicating that there can be three relationships. For example, A and / or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality of" means two or more than two.

[0028] Please refer to Figure 1 。

[0029] Some embodiments of the present application disclose a regulating device for the intake pipe vacuum degree, which is used to regulate the vacuum degree of the intake pipe to facilitate the detection of the intake pipe vacuum degree.

[0030] In some embodiments, the regulating device for the intake pipe vacuum degree includes an air filter 1 and a retaining ring 2, and the retaining ring 2 is sleeved on the air filter 1. This solution will be described by taking the air filter 1 with circumferential air intake as an example. As Figure 1 shown, the air filter 1 is cylindrical, the outer circumferential cylindrical surface of the air filter 1 intakes air, and the shape of the retaining ring 2 is adapted to the shape of the outer circumferential surface of the air filter 1.

[0031] The retaining ring 2 is sleeved on the air filter 1. The retaining ring 2 is made of an airtight material and can block the circumferential air intake holes 11 of the air filter 1 to prevent gas from entering the air filter 1 through the retaining ring 2, while the circumferential air intake holes 11 of the air filter 1 not blocked by the retaining ring 2 still intake air normally.

[0032] The retaining ring 2 can move along the axial direction of the air filter 1 to adjust the circumferential overlapping area between the retaining ring 2 and the air filter 1. As Figure 1 shown, when the retaining ring 2 moves towards the air filter 1 (the arrow direction in the figure is the matching direction between the retaining ring 2 and the air filter 1), the overlapping area between the retaining ring 2 and the air filter 1 gradually increases, and the circumferential flow area of the air filter 1 gradually decreases. When the retaining ring 2 moves away from the air filter 1, the overlapping area between the retaining ring 2 and the air filter 1 gradually decreases, and the circumferential flow area of the air filter 1 gradually increases. After the retaining ring 2 is separated from the air filter 1, the retaining ring 2 cannot adjust the circumferential flow area of the air filter 1, and the entire outer circumferential cylindrical surface of the air filter 1 intakes air.

[0033] The regulating device for the intake pipe vacuum degree disclosed in this application is installed on the intake pipe, and the intake pipe is communicated with the intake manifold through a supercharger. When installing the regulating device for the intake pipe vacuum degree disclosed in this application, it is necessary to remove the original air filter of the engine, install the air filter 1 of the regulating device for the intake pipe vacuum degree on the intake pipe, and then cooperate the retaining ring 2 of the regulating device for the intake pipe vacuum degree with the air filter 1 of the regulating device for the intake pipe vacuum degree.

[0034] In some embodiments, the air filter 1 of the regulating device for the intake pipe vacuum degree can also be the original air filter 1 of the engine.

[0035] Preferably, the air filter 1 of the regulating device for the intake pipe vacuum degree does not adopt the original air filter of the engine to reduce the adverse impact on detection caused by blockage of the original air filter of the engine. Optionally, the air filter 1 of the regulating device for the intake pipe vacuum degree and the original air filter of the engine are of the same type.

[0036] The regulating device for the intake pipe vacuum degree disclosed in this application, through the cooperation of the air filter 1 and the retaining ring 2, not only realizes the adjustment of the circumferential flow area of the air filter 1, but also the gas flow field passing through the air filter 1 of the regulating device for the intake pipe vacuum degree is the same as the gas flow field of the engine itself, which can effectively alleviate the problem of supercharger surge caused by the change of the flow field.

[0037] The shape of the retaining ring 2 is the same as the outer peripheral shape of the air filter 1 to ensure that the retaining ring 2 can effectively block the circumferential intake holes 11 at different positions of the air filter 1.

[0038] After the retaining ring 2 and the air filter 1 are combined, the retaining ring 2 and the air filter 1 are coaxial.

[0039] The length of the retaining ring 2 along the axis direction of the air filter 1 is l, and the length of the air filter 1 along its own axis direction is L, 1 / 3L ≤ l ≤ L.

[0040] The length of the retaining ring 2 is designed according to the regulating range of the intake pipe vacuum degree. During the regulation of the intake pipe vacuum degree, the retaining ring 2 does not completely block the circumferential intake holes 11 of the air filter 1. Therefore, the length of the retaining ring 2 does not exceed the length of the air filter 1 to shorten the redundant length of the retaining ring 2 and reduce the cost of the retaining ring 2.

[0041] In some embodiments, the regulating device for the intake pipe vacuum degree only includes one retaining ring 2, and the length of this retaining ring 2 is long enough, and the cooperation of the retaining ring 2 and the air filter can meet the regulating range of the intake pipe vacuum degree.

[0042] In some embodiments, the regulating device for the intake pipe vacuum degree includes at least two retaining rings 2. The length of a single retaining ring 2 is relatively short and can only meet the regulation of the intake pipe vacuum degree within a certain range. At this time, at least two retaining rings 2 can be combined to meet the regulation range of the intake pipe vacuum degree. In this embodiment, two adjacent retaining rings 2 are arranged side by side along the axis direction of the air filter, and the sum of the lengths of all the retaining rings 2 does not exceed the length L of the air cleaner 1.

[0043] In the embodiment where the regulating device for the intake pipe vibration degree has at least two retaining rings 2, the lengths of the multiple retaining rings 2 can be equal or unequal. In the embodiment where the lengths of the multiple retaining rings 2 are unequal, the unequal-length retaining rings 2 can be combined to adjust the circumferential flow area of the air cleaner 1, and the regulation flexibility is better.

[0044] The retaining ring 2 can be an integral annular structure along its circumferential direction, or composed of two half-rings spliced together, or composed of multiple arc segments spliced together.

[0045] In the embodiment where the retaining ring 2 includes at least two half-rings, the open ends of the two half-rings are opposite. The open end of the half-ring has a first end and a second end, and the distance between the first end and the second end is the diameter of the retaining ring. In some embodiments, the first ends of the two half-rings are hinged, and the second ends of the two half-rings are connected by a buckle. In this embodiment, the installation of the retaining ring 2 on the air cleaner 1 can be realized by the opening and closing of the two half-rings, and the installation and disassembly are both relatively convenient. The connection manner of the two half-rings is not limited to the above embodiment, and other connection manners are also possible.

[0046] The retaining ring 2 can be a rigid ring or a flexible ring.

[0047] In the embodiment where the retaining ring 2 is a rigid ring, the retaining ring 2 is in clearance fit with the air cleaner 1. After the retaining ring 2 is sleeved on the air cleaner 1, it will not deform under the action of gas pressure, and the stability is good. In this embodiment, the retaining ring 2 is a metal ring, a plastic ring, a ceramic ring or a wooden ring, or other materials, which are not specifically limited herein.

[0048] In the embodiment where the retaining ring 2 is a flexible ring, the retaining ring 2 can be in clearance fit or interference fit with the air cleaner 1. After the retaining ring 2 is sleeved on the air cleaner 1, the retaining ring 2 will deform under the action of gas pressure and closely adhere to the outer wall of the air cleaner 1, and the sealing performance is better. In this embodiment, the retaining ring 2 is a plastic ring or a rubber ring, or other materials, which are not specifically limited herein.

[0049] In some embodiments, the inner wall of the retaining ring 2 is a smooth inner wall to reduce the friction force between the retaining ring 2 and the outer wall of the air cleaner 1 and reduce the movement difficulty of the retaining ring 2 along the axis direction of the air cleaner 1; and / or,

[0050] The outer wall of the retaining ring 2 is provided with anti-slip protrusions to increase the friction between the staff's hand and the retaining ring 2 and reduce the difficulty for the staff to push the retaining ring 2 along the axial direction of the air filter 1.

[0051] In some embodiments, a seal is provided on the inner ring of the retaining ring 2, and the seal is used to enhance the sealing effect of the retaining ring 2 on the circumferential air intake holes 11 of the air filter 1. The seal can be a gasket.

[0052] In order to further reduce the difficulty of handling, installing and disassembling the regulating device for the intake pipe vacuum degree, in some embodiments of the present application, an installation handle is provided on the retaining ring 2, and the staff can handle, install and disassemble the entire regulating device for the intake pipe vacuum degree through the installation handle; at the same time, the staff can also handle, install and disassemble the retaining ring 2 through the handle.

[0053] Preferably, the handles are symmetrically distributed along the circumference of the retaining ring 2.

[0054] There are various forms of the handle, such as U-shaped (the open end of the U-shape is connected to the outer wall of the retaining ring 2), rod-shaped (arranged along the radial direction of the retaining ring 2), or L-shaped (the vertical section of the L-shape is arranged along the radial direction of the retaining ring 2, and the horizontal section of the L-shape is arranged along the axial direction of the retaining ring 2) or other shapes.

[0055] To ensure the service strength of the retaining ring 2, the thickness of the retaining ring 2 is preferably 5 mm - 20 mm.

[0056] Since the air filter 1 will generate heat during use, the retaining ring 2 is preferably made of a material with good heat resistance to prevent the retaining ring 2 from deforming due to heat, resulting in the inability to reuse the retaining ring 2 and increasing the difficulty of disassembly.

[0057] In some embodiments, a heat insulation pad is provided on the outer circumference of the retaining ring 2 to reduce the temperature of the outer circumference of the retaining ring 2 and reduce the risk of the staff being scalded when disassembling the retaining ring 2.

[0058] The above description is only for the preferred embodiments of the present application and the description of the applied technical principles, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. The scope of the application involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above application concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An adjusting device for the vacuum degree of an intake pipe, characterized in that It includes an air filter (1) and a retaining ring (2), and the retaining ring (2) is adapted to the shape of the outer peripheral surface of the air filter (1). The retaining ring (2) is sleeved on the air filter (1), and the retaining ring (2) is used to block the circumferential air intake holes (11) of the air filter (1). The retaining ring (2) can move axially along the air filter (1) to adjust the circumferential overlapping area between the retaining ring (2) and the air filter (1).

2. The regulating device for the intake pipe vacuum degree according to claim 1, characterized in that, The length of the retaining ring (2) in the axial direction of the air filter (1) is l, and the length of the air filter (1) in its own axial direction is L, where 1 / 3L ≤ l ≤ L.

3. The regulating device for the intake pipe vacuum degree according to claim 1, characterized in that, The number of the retaining rings (2) is at least two, and the sum of the lengths of all the retaining rings (2) does not exceed the length L of the air filter (1).

4. The regulating device for the intake pipe vacuum degree according to claim 1, wherein, The retaining ring (2) includes two semi-circular rings, and the two semi-circular rings are spliced and connected to form a circular ring adapted to the shape of the air filter (1).

5. The adjusting device for the intake pipe vacuum degree according to claim 1, wherein, The retaining ring (2) is a rigid ring or a flexible ring.

6. The adjusting device for the intake pipe vacuum degree according to claim 1, characterized in that, The retaining ring (2) is a metal ring, a plastic ring, a ceramic ring, a rubber ring or a wooden ring.

7. The adjusting device for the intake pipe vacuum degree according to claim 1, characterized in that, The inner ring of the retaining ring (2) is a smooth inner ring, and the outer ring of the retaining ring (2) is provided with anti-slip protrusions.

8. The regulating device for the intake pipe vacuum degree according to claim 7, characterized in that, A seal is provided on the inner ring.

9. The regulating device for the intake pipe vacuum degree according to claim 1 or 7, characterized in that, An installation handle is provided on the outer ring of the retaining ring (2).

10. The regulating device for the intake pipe vacuum degree according to claim 1, characterized in that, The thickness of the retaining ring (2) is 5 mm - 20 mm.

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