Rear parallel type diesel engine air filter device

Abstract

The utility model discloses a rear parallel type diesel engine air filter device which comprises a plurality of air filters, an outer side connecting pipe, an inner side connecting pipe and vortex exhaust gas. The air filters are horizontally arranged in parallel and arranged above the rear side of the engine body with air inlets facing backwards. The outer side connecting pipes are horizontally arranged above the two sides of an engine body, one end of one outer side connecting pipe is connected with an air outlet of one air filter located on the outer side, and the other end of the outer side connecting pipe is connected with the air inlet end of one supercharger away from one end of the air filter. The inner side connecting pipes are horizontally arranged above the inner side of an engine body in parallel, one end of one inner side connecting pipe is connected with an air outlet of the air filter located on the inner side, and the other end of the inner side connecting pipe is connected with the air inlet end of the supercharger close to one end of the air filter. And the after-vortex exhaust device is arranged between the after-vortex air outlet end of the supercharger far away from one end of the air filter and the after-vortex air outlet end of the supercharger close to one end of the air filter. Therefore, the occupation of the whole engine in the height space direction can be greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of engine design and manufacture, especially to a rear-mounted parallel diesel engine air filter device. BACKGROUND

[0002] The main function of the air filter is to filter the suspended impurities in the air entering the engine, prevent them from being sucked into the engine interior, protect the internal parts, and prevent the accelerated wear of internal moving parts. Because diesel engines usually work in a relatively harsh environment and are high-load running, such as engineering machinery, agricultural equipment, power generation equipment, etc., the design of the air filter pays more attention to high dust capacity, high efficiency filtration, durability and other indicators. If the air filter is blocked, it will cause insufficient air intake, reduce combustion efficiency, increase fuel consumption, and even damage the engine.

[0003] As shown in Figure 1 The prior art air filter 1 (taking the air filter arrangement of 16VC common rail as an example) adopts a vertical upward arrangement form, the air filter 1 is connected with the supercharger 4 through the connecting rubber pipe 3, the two sides of the rear end of the vortex are connected with the supercharger 4 through the corrugated pipe 5, the vortex rear exhaust gas 6 is arranged upward, the air filter 1 is arranged on the support frame 2, and the air filter 1 is arranged on the support frame 2. One side of the lower part of the air filter 1 is provided with an air filter connecting pipe 7.

[0004] The prior art air filter arrangement form has the following defects:

[0005] 1. The original state air filter is vertically upward, installed in the container, the space is small, and the maintenance is not convenient;

[0006] 2. The original state air filter is vertically upward, close to the exhaust pipe, easy to suck hot gas from the rear pipe, cause high intake temperature, lead to engine performance deterioration;

[0007] 3. The original state air filter is vertically upward, if it is necessary to increase the height of the air filter to increase the dust capacity to achieve the purpose of prolonging the service life, it will be limited by the height direction space and cannot meet the demand;

[0008] 4. The original state air filter is vertically upward, if it is increased upward, it will cause the swing amplitude of the upper part of the air filter to increase, which is easy to cause the serious fault of air filter support screw fracture and air filter falling.

[0009] Therefore, it is urgent to design a new technical scheme to solve the defects of the prior art.

[0010] The information disclosed in this BACKGROUND section is only intended to increase an understanding of the general background of the present utility model and is not intended to be a recognition or a suggestion that this information forms a prior art that is already known to those of ordinary skill in the art. CONTENT OF THE UTILITY MODEL

[0011] The utility model discloses a rear parallel diesel engine air filter device, which is characterized by arranging the supercharger horizontally and parallelly on the upper part of the rear side of the engine body, thereby greatly saving the height space of the engine as a whole.

[0012] To achieve the above object, the utility model provides a rear parallel diesel engine air filter device, which comprises a plurality of air filters, outer connecting pipes, inner connecting pipes and post-turbine exhaust bodies.

[0013] In a preferred embodiment, the central axes of the plurality of air filters are arranged in parallel with the longitudinal center line of the engine body in the top view.

[0014] In a preferred embodiment, the outer connecting pipe comprises a first straight pipe, a second straight pipe and a bend pipe. The first straight pipe is arranged in parallel with the longitudinal center axis of the engine body on the upper part of the two sides of the engine body, and the air inlet end of the first straight pipe is connected with the air outlet of the air filter on the outer side. The second straight pipe is arranged in parallel with the longitudinal center axis of the engine body on the upper part of the two sides of the engine body, and the air inlet end of the second straight pipe is connected with the air outlet end of the first straight pipe through a flange. The bend pipe has a U-shaped structure in the top view, the air inlet end of the bend pipe is communicated with the air outlet end of the second straight pipe, and the air outlet end of the bend pipe is connected with the air inlet end of the supercharger away from the air filter after being inclined inward and downward.

[0015] In a preferred embodiment, the air outlet end of the inner connecting pipe is extended backward and inclined downward to be connected with the air inlet end of the supercharger close to the air filter.

[0016] In a preferred embodiment, the rear parallel diesel engine air filter device further comprises an outer first support frame and an outer second support frame. The outer first support frame is arranged at the first straight pipe and the second straight pipe to support the first straight pipe and the second straight pipe and the engine body. The outer second support frame is arranged at the connecting flange of the first straight pipe and the second straight pipe to support the connecting part of the first straight pipe and the second straight pipe and the engine body.

[0017] In a preferred embodiment, the rear-parallel diesel engine air filter device further comprises an inner first support frame, an inner second support frame and an inner third support frame; the inner first support frame is arranged at one end of the inner connecting pipe close to the air filter, and serves as a support between the air inlet end of the inner connecting pipe and the engine body; the inner second support frame is arranged at one end of the inner connecting pipe away from the air filter, and serves as a support between the air outlet end of the inner connecting pipe and the engine body; and the inner third support frame is arranged at the air outlet end of the elbow pipe of the outer connecting pipe, and serves as a support between the air outlet end of the elbow pipe and the engine body.

[0018] In a preferred embodiment, the vortex rear exhaust body is in an inverted T-shaped structure, and the lower two ends thereof are connected with the vortex rear air outlet end of the supercharger away from the air filter and the vortex rear air outlet end of the supercharger close to the air filter, respectively, and the upward outlet thereof is the vortex rear exhaust port of the supercharger.

[0019] In a preferred embodiment, the rear-parallel diesel engine air filter device further comprises a connecting rubber pipe and a connecting corrugated pipe; the connecting rubber pipe is arranged between the air inlet end of the outer connecting pipe and the air outlet of the air filter and the air outlet end of the inner connecting pipe; and the connecting corrugated pipe is arranged between the lower two ends of the vortex rear exhaust body and the vortex rear air outlet end of the supercharger away from the air filter and the vortex rear air outlet end of the supercharger close to the air filter.

[0020] Compared with the prior art, the rear-parallel diesel engine air filter device has the following beneficial effects: the original arrangement scheme of the air filter inlet upward and above the four corners of the engine body in the prior art is modified to be horizontally arranged above the rear side of the engine body; the air filter is arranged at the rear end of the engine in parallel, is not limited by the height space, can be expanded to the rear, and the service life is increased; the air filter is arranged at the rear end of the engine in parallel, the convenience of installation and maintenance is improved; and the air filter is arranged at the rear end of the engine in parallel, is not affected by the radiation of high-temperature exhaust gas in use, the air inlet temperature of the air filter is effectively ensured to be not too high, and the performance requirements of the engine are met. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a perspective structural schematic view of a diesel engine air filter device according to an embodiment of the prior art;

[0022] Figure 2 is a top view structural schematic view of a diesel engine air filter device according to an embodiment of the utility model;

[0023] Figure 3 is a side view structural schematic view of a diesel engine air filter device according to an embodiment of the utility model;

[0024] Figure 4 is a perspective structural schematic view of a diesel engine air filter device according to an embodiment of the utility model;

[0025] Figure 5 is a three-dimensional structure schematic diagram of the overall structure of the diesel engine according to an embodiment of the present application;

[0026] Figure 6 is a plane schematic diagram of the overall structure of the diesel engine according to an embodiment of the present application in the container.

[0027] Main figure mark explanation:

[0028] 1 - air filter, 2 - connecting rubber pipe, 3 - outer side connecting pipe, 301 - first straight pipe, 302 - second straight pipe, 303 - elbow pipe, 4 - outer side first support frame, 5 - inner side first support frame, 6 - inner side connecting pipe, 7 - inner side second support frame, 8 - supercharger, 9 - connecting bellows, 10 - outer side second support frame, 11 - post-turbine exhaust gas, 12 - inner side third support frame, 13 - engine body, 14 - container, 15 - air filter position of prior art. DETAILED DESCRIPTION

[0029] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present application is not limited by the specific embodiments.

[0030] Unless otherwise explicitly indicated, in the entire specification and claims, the term "comprise" or its variants such as "include" or "comprising" and the like will be understood to encompass the stated element or component without excluding the presence of other elements or components.

[0031] As shown in Figures 2 to 5 , according to the preferred embodiment of the present application, a post-parallel diesel engine air filter device comprises a plurality of air filters 1, outer side connecting pipes 3, inner side connecting pipes 6, and post-turbine exhaust gas 11; the plurality of air filters 1 are horizontally parallel, the air inlets are backward, and the central axes are parallel to the longitudinal center line of the engine body 13, and are arranged above the rear side of the engine body 13; the outer side connecting pipes 3 are horizontally arranged above both sides of the engine body 13, one end of one outer side connecting pipe 3 is connected to the air outlet of one air filter 1 located on the outer side, and the other end is connected to the air inlet of one supercharger 8 away from one end of the air filter 1; the inner side connecting pipes 6 are horizontally parallel and arranged above the inner side of the engine body 13, one end of one inner side connecting pipe 6 is connected to the air outlet of one air filter 1 located on the inner side, and the other end is connected to the air inlet of one supercharger 8 close to one end of the air filter 1; the post-turbine exhaust gas 11 is arranged between the post-turbine exhaust end of the supercharger 8 away from one end of the air filter 1 and the post-turbine exhaust end of the supercharger 8 close to one end of the air filter 1.

[0032] Please refer to Figure 2 and Figure 3In some embodiments, the central axis of the plurality of air filters 1 is parallel to the longitudinal center line of the engine block 13 when viewed in the top view, and the air inlet of the air filter 1 faces the rear side of the engine block 13.

[0033] Referring to Figure 2 and Figure 3 In some embodiments, the outer side connecting pipe 3 includes a first straight pipe 301, a second straight pipe 302, and a bent pipe 303; the first straight pipe 301 is arranged above both sides of the engine block 13 parallel to the longitudinal central axis of the engine block 13, and the air inlet end of the first straight pipe 301 is connected to the air outlet of the air filter 1 located on the outer side; the second straight pipe 302 is arranged above both sides of the engine block 13 parallel to the longitudinal central axis of the engine block 13, and the air inlet end of the second straight pipe 302 is connected to the air outlet end of the first straight pipe 301 through a flange; and the bent pipe 303 has a U-shaped structure in the top view, the air inlet end of the bent pipe 303 is in communication with the air outlet end of the second straight pipe 302, and the air outlet end of the bent pipe 303 is inclined downward toward the middle inner side and then connected to the air inlet end of the supercharger 8 away from the air filter 1.

[0034] In some embodiments, the U-shaped structure of the bent pipe 303 has an outer-high inner-low structure, the opening of the U-shaped structure faces the rear side of the engine block 13, and the plane formed by the U-shaped structure has an outer-high inner-low inward inclination, which is mainly to adapt to the position of the supercharger 8 being lower than the positions of the first straight pipe 301 and the second straight pipe 302.

[0035] Referring to Figure 2 and Figure 3 In some embodiments, the air outlet end of the inner side connecting pipe 6 extends backward and then downward to be connected to the air inlet end of the supercharger 8 close to the air filter 1, and the position of the air filter 1 is also higher than the position of the supercharger 8.

[0036] Referring to Figures 2 to 4 In some embodiments, the rear parallel diesel engine air filter device further includes an outer side first support frame 4 and an outer side second support frame 10; the outer side first support frame 4 is arranged at the first straight pipe 301 and the second straight pipe 302 as a support between the first straight pipe 301, the second straight pipe 302, and the engine block 13; and the outer side second support frame 10 is arranged at the connecting flange of the first straight pipe 301 and the second straight pipe 302 as a support between the connecting position of the first straight pipe 301 and the second straight pipe 302 and the engine block 13.

[0037] In some embodiments, the structure of the outer first support frame 4 arranged on the first straight pipe 301 and the second straight pipe 302 can be the same or different, because the upper end structure of the two should be basically the same, because the diameters of the first straight pipe 301 and the second straight pipe 302 are the same. However, the lower end structure of the two can be different due to the different connection positions with the engine body 13.

[0038] Please refer to Figures 2 to 4 In some embodiments, the rear parallel diesel engine air filter device further comprises an inner first support frame 5, an inner second support frame 7, and an inner third support frame 12; the inner first support frame 5 is arranged at one end of the inner connecting pipe 6 close to the air filter 1, serving as a support between the air inlet end of the inner connecting pipe 6 and the engine body 13; the inner second support frame 7 is arranged at one end of the inner connecting pipe 6 away from the air filter 1, serving as a support between the air outlet end of the inner connecting pipe 6 and the engine body 13; and the inner third support frame 12 is arranged at the air outlet end of the elbow pipe 303 of the outer connecting pipe 3, serving as a support between the air outlet end of the elbow pipe 303 and the engine body 13.

[0039] In some embodiments, the post-turbine exhaust body 11 is in an inverted T-shaped structure (similar to a T-shaped tee joint), the lower two ends of which are respectively connected to the post-turbine air outlet end of the supercharger 8 away from the air filter 1 and the post-turbine air outlet end of the supercharger 8 close to the air filter 1, and the upward outlet thereof is the post-turbine exhaust port of the supercharger 8.

[0040] Please refer to Figures 2 to 4 In some embodiments, the rear parallel diesel engine air filter device further comprises a connecting rubber pipe 2 and a connecting corrugated pipe 9; the connecting rubber pipe 2 is arranged between the air inlet end of the outer connecting pipe 3 and the inner connecting pipe 6 and the air outlet of the air filter 1; and the connecting corrugated pipe 9 is arranged between the lower two ends of the post-turbine exhaust body 11 and the post-turbine air outlet end of the supercharger 8 away from the air filter 1 and the post-turbine air outlet end of the supercharger 8 close to the air filter 1. The connecting rubber pipe 2 and the connecting corrugated pipe 9 are used to avoid the influence of the vibration of the engine on the connection due to their flexible connection characteristics.

[0041] Please refer to Figures 5 to 6 Figures 5 to 6 In some embodiments, the parallel rear arrangement of the engine air filter device makes the expansion space of the engine more sufficient, and when the engine is placed in the container 14, the space is more spacious. The vertical arrangement of the air filter position 15 in front of the engine body 13 makes the space in the height direction of the container 14 very cramped.

[0042] In summary, the rear parallel diesel engine air filter device has the following advantages: the original air filter inlet of the prior art is arranged upward and above the four corners of the engine body, which is modified to be horizontally arranged above the rear side of the engine body; the rear parallel air filter is arranged at the rear end of the engine, which is not limited by the height space and can be expanded to the rear to increase the service life; the rear parallel air filter arranged at the rear end of the engine can improve the convenience of installation and maintenance; the rear parallel air filter arranged at the rear end of the engine is not affected by the radiation of high-temperature exhaust gas during use, effectively ensures that the air inlet temperature of the air filter is not too high, and meets the performance requirements of the engine.

[0043] The foregoing description of specific exemplary embodiments of the present application is intended to be illustrative only and is not intended to limit the application to the precise forms disclosed. Many modifications and variations are possible in light of the above teachings without departing from the spirit or essential characteristics of the present application. The exemplary embodiments were chosen and described in order to explain the principles of the present application and its practical application and to allow others skilled in the art to understand the present application for various exemplary embodiments with various modifications as are suited to the particular use contemplated. The scope of the present application is intended to be defined by the claims and their equivalents.

Claims

1. A rear-mounted parallel diesel engine air filter device, characterized in that, include: Multiple air filters are arranged horizontally side by side with their air intakes facing rearward and positioned above the rear of the engine block. An outer connecting pipe is horizontally positioned above both sides of the engine block. One end of the outer connecting pipe is connected to the outlet of an air filter located on the outside, and the other end is connected to the intake of a turbocharger located away from the air filter. An inner pipe is horizontally arranged above the inner side of the engine body. One end of one inner pipe is connected to the air outlet of the air filter located inside, and the other end is connected to the air inlet of a turbocharger near one end of the air filter. as well as The exhaust gas after the vortex is located between the exhaust gas end of the turbocharger at the end furthest from the air filter and the exhaust gas end of the turbocharger at the end closest to the air filter.

2. The rear-mounted parallel diesel engine air filter device as described in claim 1, characterized in that, From a top-down view, the central axis of the multiple air filters is arranged parallel to the longitudinal centerline of the engine block.

3. The rear-mounted parallel diesel engine air filter device as described in claim 1, characterized in that, The outer connecting pipe includes: The first straight pipe is arranged above both sides of the engine body, parallel to the longitudinal central axis of the engine body, and the air inlet of the first straight pipe is connected to the air outlet of the air filter located on the outside. A second straight pipe, parallel to the longitudinal central axis of the engine block, is positioned above both sides of the engine block. The inlet end of the second straight pipe is connected to the outlet end of the first straight pipe via a flange. The bend, which has a U-shaped structure when viewed from above, has an air inlet end connected to the air outlet end of the second straight pipe. The air outlet end of the bend is tilted downwards and towards the center, and then connected to the air inlet end of the turbocharger at the end away from the air filter.

4. The rear-mounted parallel diesel engine air filter device as described in claim 1, characterized in that, The outlet end of the inner pipe extends backward and tilts downward before connecting to the inlet end of the turbocharger near the air filter.

5. The rear-mounted parallel diesel engine air filter device as described in claim 3, characterized in that, Also includes: The outer first support frame is disposed at the first straight pipe and the second straight pipe, serving as a support between the first straight pipe and the second straight pipe and the engine body; as well as The outer second support frame is located at the connecting flange of the first straight pipe and the second straight pipe, serving as a support between the connection point of the first straight pipe and the second straight pipe and the engine body.

6. The rear-mounted parallel diesel engine air filter device as described in claim 3, characterized in that, Also includes: An inner first support frame is provided at one end of the inner pipe near the air filter, serving as a support between the air intake end of the inner pipe and the engine block. The inner second support frame is located at the end of the inner pipe away from the air filter, and serves as a support between the air outlet of the inner pipe and the engine body. as well as The inner third support frame is located at the air outlet end of the bend of the outer connecting pipe, serving as a support between the air outlet end of the bend and the engine body.

7. The rear-mounted parallel diesel engine air filter device as described in claim 3, characterized in that, The exhaust gas after the vortex has an inverted T-shaped structure, with its lower two ends connected to the exhaust gas outlet of the turbocharger at the end away from the air filter and the exhaust gas outlet of the turbocharger at the end closer to the air filter, respectively. Its upward-facing outlet is the exhaust port of the turbocharger after the vortex.

8. The rear-mounted parallel diesel engine air filter device as described in claim 7, characterized in that, Also includes: A connecting hose is disposed between the air inlet end of the outer connecting pipe and the inner connecting pipe and the air outlet of the air filter; as well as A bellows is connected between the two ends of the lower part of the exhaust gas after the vortex and the exhaust gas outlet of the turbocharger at the end away from the air filter and the exhaust gas outlet of the turbocharger at the end close to the air filter.

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