Diesel engine integrated air filter

Abstract

The invention relates to an integrated air filter of a diesel engine. The integrated air filter comprises an integrated housing, the integrated housing integrates the intercooler air inlet cavity, the intercooler core shell, the high-temperature water inlet cavity, the high-temperature water outlet cavity, the low-temperature water inlet cavity, the low-temperature water outlet cavity and the filter element shell, the sealing link is omitted, and installation is convenient. The left air filter element and the right air filter element are located behind a supercharging intercooling system, the space of an air outlet cover of a traditional intercooler is utilized, the structure is simple, arrangement is reasonable, the cleanliness of air entering an air cylinder is ensured, meanwhile, the space of a traditional air filter interception filter element is saved, and the air filter is used for arranging an inertia rotational flow pipe and improving the filtering efficiency. And the requirement of a supercharged intercooling system for clean air is met. When the resistance of the filter element is too large, the system gives an alarm prompt, the filter element is replaced at the moment, and the performance of the engine is prevented from being further deteriorated. The device is simple in structure, convenient to implement, economical, high in installability and good in reliability.

Description

Technical Field

[0001] This invention belongs to the field of diesel engines, particularly high-power turbocharged intercooled diesel engines, and specifically relates to an integrated air filter for diesel engines. Background Technology

[0002] Air filters are an important component of the diesel engine intake system. High-power multi-cylinder diesel engines are generally V-type structures, with the air filter located before the low-pressure stage compressor. It uses two-stage filtration, namely a first-stage inertial cyclone tube and a second-stage interceptor filter element. Clean air passes through the multi-stage turbocharged intercooler system located at the top of the diesel engine and then enters the cylinders from the front or rear of the diesel engine along the crankshaft axis through the exhaust hood. Its structure is dispersed, with many sealing points, requiring frequent maintenance, and lacking secondary filtration after the intercooler, it is difficult to ensure the cleanliness of the air entering the cylinders.

[0003] Diesel engines require a large amount of air to operate. If the air is not filtered or the filtration is ineffective, suspended dust particles in the air will enter the cylinder, accelerating the wear of internal parts and leading to a decrease in engine power or even more serious malfunctions. Modern high-power diesel engines generally employ multi-stage turbocharging and intercooling technology to continuously improve power density. This places more stringent requirements on air filter design, requiring high filtration efficiency while further minimizing size. Summary of the Invention

[0004] This invention addresses the problems of limited space, low filtration efficiency, and short maintenance cycles associated with air filters in high-power turbocharged intercooled diesel engines. Based on the practical engineering reality that the air cleanliness requirements for in-cylinder components in diesel engines are more stringent than those of turbocharged intercooled systems, this invention provides an integrated air filter for diesel engines. This structure effectively utilizes the space in the intercooler exhaust shroud to ensure the cleanliness of the air entering the cylinder volume, while saving the space of the original pre-compressor interceptor filter to accommodate a primary inertial separation filter, thereby improving filtration efficiency and ensuring that the cleanliness of the gas entering the turbocharged intercooled system meets operational requirements.

[0005] To address the above technical problems, the present invention provides an integrated air filter for diesel engines, characterized in that it comprises:

[0006] The integrated housing (1) integrates the intercooler air inlet chamber (13), the intercooler core housing (14), the high temperature water inlet chamber (15), the high temperature water outlet chamber (16), the low temperature water inlet chamber (17), the low temperature water outlet chamber (18), and the filter housing (19).

[0007] Intercooler core (2) is installed inside the intercooler core housing (14);

[0008] The left air filter (4) and the right air filter (5) are installed inside the filter housing (19) and are located in front of the intercooler core;

[0009] The left exhaust pipe (7) and the right exhaust pipe (8) are connected to the integrated cover and are located downstream of the left air filter 4 and the right air filter 5, respectively connected to the left and right intake pipes of the diesel engine.

[0010] A differential pressure sensor (9) is installed on an air outlet pipe to detect the pressure difference before and after the filter element and to issue an alarm signal.

[0011] Furthermore, the intercooler core (2) is a high-low temperature dual-loop cooling structure.

[0012] Furthermore, the left air filter (4) and the right air filter (5) have a racetrack-shaped structure and are equipped with a sealing strip and a handle on the top.

[0013] Furthermore, the integrated housing (1) is provided with a detachable intercooler core cover plate (3) and an air filter cover plate (6) on top.

[0014] Furthermore, the low-pressure end of the differential pressure sensor (9) is directly connected to the air outlet pipe, and the high-pressure end is connected to the integrated housing (1) through the rubber tube (10) and the pressure tap (12).

[0015] Furthermore, the intercooler intake chamber 13 is connected to the outlet of the high-pressure stage compressor of the diesel engine, and the interface position is adjusted according to the actual layout.

[0016] Furthermore, the filter housing (19) is arranged using the space of the intercooler exhaust hood; both the intercooler core housing 14 and the filter housing 19 are thin-walled protruding structures.

[0017] Furthermore, the left exhaust pipe (7) and the right exhaust pipe (8) are symmetrical structures and are installed at the bottom of the front end of the integrated housing by bolts.

[0018] Furthermore, the integrated housing (1) is a multifunctional cavity structure integrally formed or welded.

[0019] Furthermore, the intercooler intake chamber (13), intercooler core housing (14), and filter housing (19) are arranged sequentially from back to front. The high-temperature water inlet chamber (15) and high-temperature water outlet chamber (16) are symmetrically arranged on the left and right sides of the intercooler core housing (14), and the low-temperature water inlet chamber (17) and low-temperature water outlet chamber (18) are symmetrically arranged on the left and right sides of the intercooler core housing (14).

[0020] Beneficial effects: This invention effectively solves the problems of traditional air filters being large in size, lacking compactness, and having short maintenance cycles, greatly improving the reliability of the diesel engine intake system. Specific advantages are as follows:

[0021] 1. The integrated housing 1 integrates the intercooler air inlet cover, high and low temperature water inlet and outlet chambers, intercooler core housing and air filter housing, reducing the sealing links, reducing the installation difficulty and improving the sealing reliability.

[0022] 2. The intercooler has a high and low temperature dual-loop structure, and the high and low temperature inlet and outlet water temperatures can be flexibly adjusted according to actual cooling requirements.

[0023] 3. The position of the inlet and outlet water chambers of the intercooler can be adjusted according to the actual water path;

[0024] IV. The air filter element utilizes the space of the outlet shroud of the traditional diesel engine intercooler. Since it is located after the turbocharger system, the volume flow rate of compressed gas is greatly reduced, which effectively reduces the requirement for the filtration area of ​​the air filter element.

[0025] Fifth, another advantage of placing the air filter after the turbocharger is that the air filter located at the front end of the low-pressure stage compressor can have more space to arrange the first-stage inertial cyclone tube structure, effectively improving the filtration efficiency of the first-stage filter and meeting the clean air requirements of the turbocharged intercooling system.

[0026] 6. The air filter element is located upstream of the intake manifold after the turbocharger and intercooler of the diesel engine. It can effectively filter impurities that may be brought in by the turbocharger and intercooler, ensuring the cleanliness of the gas entering the cylinder, avoiding damage to the cylinder parts, and improving the reliability of the system.

[0027] 7. A differential pressure sensor is installed on the side of the right exhaust pipe 8. When the filter element resistance is too high, the system will issue an alarm reminder. At this time, the filter element should be replaced to prevent further deterioration of engine performance.

[0028] Compared with existing solutions, the integrated air filter of the present invention has fewer sealing nodes, a reasonable filter element arrangement, and a simple structure, which is conducive to engineering applications. Attached Figure Description

[0029] Figure 1 , Figure 2 This is a schematic diagram of the overall scheme of the present invention;

[0030] Figure 3 This is a schematic diagram of the integrated housing structure of the present invention;

[0031] Figure 4 This is a schematic diagram of the differential pressure sensor mounting structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the air filter element structure of the present invention. Detailed Implementation

[0033] To make the objectives, contents, and advantages of the present invention clearer, the specific embodiments of the present invention will be described in further detail below.

[0034] The present invention proposes an integrated air filter for diesel engines, which consists of an integrated housing 1, an intercooler core 2, an intercooler core cover 3, a left air filter element 4, a right air filter element 5, an air filter element cover 6, a left exhaust pipe 7, a right exhaust pipe 8, a differential pressure sensor 9, a hose 10, a clamp 11, and a pressure tapping connector 12.

[0035] The integrated housing 1 integrates an intercooler intake chamber 13, an intercooler core housing 14, a high-temperature water inlet chamber 15, a high-temperature water outlet chamber 16, a low-temperature water inlet chamber 17, a low-temperature water outlet chamber 18, and a filter housing 19. The intercooler intake chamber 13 is connected to the outlet of the high-pressure stage compressor of the diesel engine, and the interface position can be adjusted according to the actual layout. Both the intercooler core housing 14 and the filter housing 19 are thin-walled protruding structures used for limiting the installation of the core. Openings are designed on the top of the integrated housing 1 at the positions of the intercooler core 2 and the air filters 4 and 5, respectively, for easy maintenance.

[0036] Specifically, the intercooler intake chamber 13, the intercooler core housing 14, and the filter housing 19 are arranged sequentially from back to front, the high-temperature water inlet chamber 15 and the high-temperature water outlet chamber 16 are symmetrically arranged on the left and right sides of the intercooler core housing 14, and the low-temperature water inlet chamber 17 and the low-temperature water outlet chamber 18 are symmetrically arranged on the left and right sides of the intercooler core housing 14.

[0037] The intercooler core 2 is installed at the intercooler core housing 14 of the integrated housing 1, and is a high and low temperature dual-loop cooling structure to meet more stringent cooling requirements.

[0038] The left air filter 4 and the right air filter 5 have identical racetrack-shaped structures. They are installed in the filter housing 19 position of the integrated casing 1, located in front of the intercooler core 2.

[0039] The tops of the left air filter 4 and right air filter 5 are closed, with sealing strips designed at the top. The sealing strips are replaced simultaneously each time the filter is replaced, ensuring reliable sealing. A handle for replacing the filter is also included. Figure 5 As shown;

[0040] The intercooler core cover plate 2 is bolted to the top of the integrated housing 1 to seal the intercooler core 2 and meet replacement requirements;

[0041] The air filter cover 6 is bolted to the top of the integrated housing 1 to seal the left air filter 4 and the right air filter 5 and to meet replacement requirements;

[0042] The left exhaust pipe 7 and the right exhaust pipe 8 are symmetrical structures and are installed at the bottom front end of the integrated cover 1 by bolts. They are located downstream of the left air filter 4 and the right air filter 5 and are respectively connected to the left and right intake pipes of the diesel engine.

[0043] The differential pressure sensor 9 is installed on the side of the right air outlet pipe 8. The low-pressure end is directly connected to the right air outlet pipe 8, and the high-pressure end is connected to the integrated cover 1 through the rubber tube 10, clamp 11, and pressure tap 12. When the front and rear pressure difference exceeds the limit value, the control system issues an alarm to prompt the filter element to be replaced.

[0044] The integrated housing 1 of this invention integrates the intercooler intake chamber 13, the intercooler core housing 14, the high-temperature water inlet chamber 15, the high-temperature water outlet chamber 16, the low-temperature water inlet chamber 17, the low-temperature water outlet chamber 18, and the filter housing 19, reducing the number of sealing components and facilitating installation. The left air filter 4 and right air filter 5 are located after the turbocharged intercooler system, utilizing the space of the traditional intercooler exhaust shroud. This simple and rational arrangement ensures the cleanliness of the air entering the cylinders while saving space previously occupied by traditional air filter interceptors. This space is used to accommodate inertial vortex tubes, improving filtration efficiency and meeting the clean air requirements of the turbocharged intercooler system. A differential pressure sensor is installed on the side of the right exhaust pipe 8. When the filter resistance is too high, the system issues an alarm, prompting the replacement of the filter to prevent further deterioration of engine performance.

[0045] This invention features a simple structure, ease of implementation, economy, high installability, and good reliability. When the diesel engine intake air filtration system adopts the structure disclosed in this invention, it can make reasonable use of space, improve filtration efficiency, extend maintenance cycles, reduce sealing components, and enhance system reliability.

[0046] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An integrated air filter for diesel engines, characterized in that, include: The integrated housing (1) integrates the intercooler air inlet chamber (13), the intercooler core housing (14), the high temperature water inlet chamber (15), the high temperature water outlet chamber (16), the low temperature water inlet chamber (17), the low temperature water outlet chamber (18), and the filter housing (19). Intercooler core (2) is installed inside the intercooler core housing (14); The left air filter (4) and the right air filter (5) are installed inside the filter housing (19) and are located in front of the intercooler core; The left exhaust pipe (7) and the right exhaust pipe (8) are connected to the integrated cover and are located downstream of the left air filter 4 and the right air filter 5, respectively connected to the left and right intake pipes of the diesel engine. A differential pressure sensor (9) is installed on an air outlet pipe to detect the pressure difference before and after the filter element and to issue an alarm signal.

2. The integrated air filter for diesel engines according to claim 1, characterized in that, The intercooler core (2) has a high and low temperature dual-loop cooling structure.

3. The integrated air filter for diesel engines according to claim 1, characterized in that, The left air filter (4) and right air filter (5) have a racetrack-shaped structure and are equipped with a sealing strip and a handle on the top.

4. The integrated air filter for diesel engines according to claim 1, characterized in that, The integrated housing (1) is provided with a detachable intercooler core cover plate (3) and an air filter cover plate (6) on the top.

5. The integrated air filter for diesel engines according to claim 1, characterized in that, The low-pressure end of the differential pressure sensor (9) is directly connected to the air outlet pipe, and the high-pressure end is connected to the integrated housing (1) through the rubber tube (10) and the pressure tap (12).

6. The integrated air filter for diesel engines according to claim 1, characterized in that, The intercooler intake chamber 13 is connected to the outlet of the high-pressure stage compressor of the diesel engine, and the interface position is adjusted according to the actual layout.

7. The integrated air filter for diesel engines according to claim 1, characterized in that, The filter housing (19) is arranged using the space of the intercooler exhaust hood; both the intercooler core housing 14 and the filter housing 19 are thin-walled protruding structures.

8. The integrated air filter for diesel engines according to claim 1, characterized in that, The left exhaust pipe (7) and the right exhaust pipe (8) are symmetrical structures and are installed at the bottom of the front end of the integrated housing by bolts.

9. The integrated air filter for diesel engines according to claim 1, characterized in that, The integrated housing (1) is a multifunctional cavity structure formed by integral molding or welding.

10. The integrated air filter for diesel engines according to any one of claims 1-9, characterized in that, The intercooler intake chamber (13), intercooler core housing (14), and filter housing (19) are arranged sequentially from back to front. The high-temperature water inlet chamber (15) and high-temperature water outlet chamber (16) are symmetrically arranged on the left and right sides of the intercooler core housing (14). The low-temperature water inlet chamber (17) and low-temperature water outlet chamber (18) are symmetrically arranged on the left and right sides of the intercooler core housing (14).

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