Heavy duty diesel vehicle fuel filter oiling device

Abstract

The utility model discloses heavy -duty diesel vehicle filter oil supply unit belongs to diesel vehicle oil supply technical field, heavy -duty diesel vehicle filter oil supply unit, including filter assembly and oil -gas separator, the inside installation of filter assembly has filter core body, exhaust pump and oil pump, it can adopt double -pump structure, can both the mixed oil gas of filter core body inside and outside is extracted and is arranged in oil -gas separator and carries out oil -gas separation, has improved filter assembly in oil level height, still can after the fuel oil of gas -free filtered in filter core is extracted from filter core body inside and supplies engine, and the fuel oil of supplying engine through double -pump work simultaneously is not influenced oil supply when heavy load or climbing by the height of engine speed, and the excess fuel is discharged into the oil tank through pressure relief exhaust adjusting valve, avoids oil supply too much or too little influence engine power and oil consumption, has solved the problem of the power decline, oil consumption heightening of big horsepower engine because of oil supply deficiency.

Description

Technical Field

[0001] This utility model relates to the field of diesel vehicle fuel supply technology, and more specifically, to a fuel supply device for a filter in a heavy-duty diesel vehicle. Background Technology

[0002] The advantages of diesel engines are high torque and good fuel economy. The working process of a diesel engine is similar to that of a gasoline engine in many ways, with each working cycle also going through four strokes: intake, compression, power, and exhaust.

[0003] Based on the above, the inventors have discovered that existing high-horsepower diesel engines typically use engine operation to drive the fuel pump for fuel supply. When climbing hills or under heavy loads, the engine speed is low while the fuel consumption is high. As a result, the fuel pump is affected by the engine speed and often experiences insufficient fuel supply, leading to reduced power and increased fuel consumption. Therefore, in view of this, the inventors have researched and improved the existing structure to provide a fuel supply device for heavy-duty diesel vehicle filters, aiming to achieve a more practical purpose. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a fuel supply device for a heavy-duty diesel vehicle filter. It can adopt a dual-pump structure, which can extract the mixed oil and gas inside and outside the filter element and discharge it into the oil-gas separator for oil-gas separation, thereby increasing the oil level in the filter assembly. It can also extract the gas-free fuel filtered inside the filter element and supply it to the engine. At the same time, the fuel supplied to the engine by the dual pumps is not affected by the engine speed when under heavy load or climbing. Excess fuel is discharged into the fuel tank through the pressure relief and exhaust adjustment valve, avoiding the impact of too much or too little fuel supply on engine power and fuel consumption. This solves the problem of reduced power and increased fuel consumption in high-horsepower engines due to insufficient fuel supply.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A heavy-duty diesel vehicle filter supply device includes a filter assembly and an oil-gas separator. The filter assembly internally houses a filter element body, an exhaust pump, and a fuel supply pump. A main fuel supply channel is located at the lower part of the filter assembly. The filter element body has an external oil-gas inlet, an internal oil-gas inlet, and an oil outlet. The internal oil-gas inlet is connected to the intake end of the exhaust pump via an exhaust inlet channel. The oil outlet is connected to the main fuel supply channel via a secondary fuel supply channel. The fuel supply pump is connected to the secondary fuel supply channel. The oil-gas separator is connected to the exhaust pump via an exhaust outlet channel. The bottom of the oil-gas separator is connected to the main fuel supply channel via a separator oil outlet channel. The top of the oil-gas separator is connected to a pressure relief and exhaust adjustment valve via a separator oil-gas outlet channel.

[0009] Furthermore, a check valve is installed on the auxiliary oil supply channel.

[0010] Furthermore, the oil supply pump is provided with an oil inlet channel and an oil outlet channel, and the one-way valve is installed between the oil inlet channel, the oil outlet channel and the auxiliary oil supply channel.

[0011] Furthermore, an oil inlet for the filter is installed on the upper part of the filter assembly.

[0012] Furthermore, a filter outlet is provided at one end of the main oil supply channel.

[0013] Furthermore, the top of the pressure relief and exhaust adjustment valve is provided with an oil and gas inlet channel.

[0014] 3. Beneficial effects

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] (1) In this solution, by adding an exhaust pump and a fuel supply pump, the exhaust pump is responsible for extracting the mixed oil and gas inside and outside the filter element body in the filter assembly and discharging it into the oil-gas separator for oil-gas separation. At the same time, it increases the oil level in the filter assembly. The separated gas is discharged back to the fuel tank through the exhaust channel, and the gas-free fuel enters the main fuel supply channel to supply the engine. The fuel supply pump is responsible for extracting the gas-free fuel filtered inside the filter element body from inside the filter element body and supplying it to the engine.

[0017] (2) In this scheme, the fuel supplied to the engine by the dual pumps is not affected by the engine speed when under heavy load or climbing. Excess fuel is discharged into the fuel tank through the pressure relief valve. The advantage of the pressure relief valve design is that it can adjust the fuel supply according to the amount of fuel used by the engine. Less fuel is discharged when the throttle is high and more fuel is discharged when the throttle is low, so as to avoid the impact of too much or too little fuel supply on engine power and fuel consumption.

[0018] (3) In this solution, by setting up an auxiliary oil supply channel between the filter element body and the main oil supply channel, and by setting up a one-way valve on the auxiliary oil supply channel, the engine can still be supplied with oil through the main oil supply channel in the event of damage to the oil supply pump, thereby ensuring stable oil supply and improving efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram illustrating the working principle of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 3 For the present utility model Figure 2 Schematic diagram of the rear structure.

[0022] Explanation of the labels in the diagram:

[0023] 1. Filter assembly;

[0024] 2. Oil-gas separator;

[0025] 3. Filter element body;

[0026] 4. Exhaust pump;

[0027] 5. Oil supply pump; 501. Oil inlet channel; 502. Oil outlet channel;

[0028] 6. Main fuel supply channel;

[0029] 7. Oil and gas inlet outside the filter element;

[0030] 8. Oil and gas inlet inside the filter element;

[0031] 9. Oil outlet of filter element;

[0032] 10. Exhaust inlet passage;

[0033] 11. Secondary fuel supply channel;

[0034] 12. Check valve;

[0035] 13. Exhaust outlet passage;

[0036] 14. Separator oil outlet channel;

[0037] 15. Separator oil and gas outlet passage;

[0038] 16. Pressure relief and exhaust adjustment valve;

[0039] 17. Oil inlet of the filter;

[0040] 18. Oil outlet of the filter;

[0041] 19. Oil and gas enter the fuel tank passage. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0043] Example:

[0044] Please see Figures 1-3 The heavy-duty diesel vehicle filter supply device includes a filter assembly 1 and an oil-gas separator 2. The filter assembly 1 is internally equipped with a filter element body 3, an exhaust pump 4, and a fuel supply pump 5. The lower part of the filter assembly 1 is provided with a main fuel supply channel 6. The filter element body 3 is provided with an external oil-gas inlet 7, an internal oil-gas inlet 8, and an oil outlet 9. The internal oil-gas inlet 8 is connected to the air intake end of the exhaust pump 4 through an exhaust inlet channel 10. The oil outlet 9 is connected to the main fuel supply channel 6 through a secondary fuel supply channel 11. The fuel supply pump 5 is connected to the secondary fuel supply channel 11. The oil-gas separator 2 is connected to the exhaust pump 4 through an exhaust outlet channel 13. The bottom of the oil-gas separator 2 is connected to the main fuel supply channel 6 through a separator oil outlet channel 14. The top of the oil-gas separator 2 is connected to a pressure relief and exhaust adjustment valve 16 through a separator oil-gas outlet channel 15.

[0045] See Figure 1 A one-way valve 12 is installed on the auxiliary oil supply channel 11.

[0046] See Figure 1 The oil pump 5 is provided with an oil inlet channel 501 and an oil outlet channel 502, and a one-way valve 12 is installed between the oil inlet channel 501 and the oil outlet channel 502 and the auxiliary oil supply channel 11.

[0047] See Figure 1 and Figure 3 The filter assembly 1 has a filter inlet 17 installed on its upper part.

[0048] See Figure 3 One end of the main oil supply channel 6 is equipped with a filter outlet 18.

[0049] See Figure 2 The top of the pressure relief and exhaust valve 16 is provided with an oil and gas inlet passage 19.

[0050] In operation: First, the fuel mixture containing impurities and gases enters the filter assembly 1 through the filter inlet 17. After being filtered by the filter element body 3, the external fuel mixture enters the filter element body 3 through the external fuel inlet 7, while the internal fuel mixture passes through the internal fuel inlet 8 and is drawn out by the exhaust pump 4 through the exhaust inlet channel 10 and discharged into the fuel separator 2. In the fuel separator 2, the fuel mixture is separated. The separated gas passes through the separator fuel outlet channel 15 and the pressure relief and exhaust adjustment valve 16, and finally returns to the fuel tank through the fuel tank channel 19. The fuel without gas enters the main fuel supply channel 6 from the bottom of the fuel separator 2 through the separator fuel outlet channel 14, providing a stable fuel supply to the engine.

[0051] Secondly, the fuel, free of gas after filtration by the filter element body 3, flows out from the filter element outlet 9, passes through the auxiliary fuel supply channel 11, is drawn into the fuel supply pump 5 through the fuel inlet channel 501, and is pumped out through the fuel outlet channel 502, further ensuring the fuel supply to the engine. When the fuel supply pump 5 is working normally, the one-way valve 12 is closed; if the fuel supply pump 5 is damaged, the one-way valve 12 opens to ensure unidirectional fuel flow and prevent backflow. The main fuel supply channel 6 can still maintain fuel supply to the engine through the auxiliary fuel supply channel 11, greatly enhancing the reliability of the device.

[0052] Furthermore, during the operation of heavy-duty diesel vehicles, especially under heavy loads or when climbing hills, the engine's fuel demand changes. At this time, the advantages of the dual-pump structure become apparent. The exhaust pump 4 and the fuel supply pump 5 work together to precisely supply fuel according to the engine's needs, unaffected by engine speed. The pressure relief and exhaust adjustment valve 16 can flexibly adjust the fuel supply based on the engine's fuel consumption, reducing fuel discharge at high throttle and increasing discharge at low throttle, always maintaining optimal engine power output and fuel economy, effectively avoiding problems such as decreased engine power and increased fuel consumption caused by excessive or insufficient fuel supply.

[0053] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0054] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0055] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A fuel supply device for heavy duty diesel vehicle filter, comprising a filter assembly (1) and an oil-gas separator (2), characterized in that: The filter assembly (1) is internally equipped with a filter element body (3), an exhaust pump (4), and an oil supply pump (5). The filter assembly (1) has a main oil supply channel (6) at its lower part. The filter element body (3) has an external oil and gas inlet (7), an internal oil and gas inlet (8), and an oil outlet (9). The internal oil and gas inlet (8) is connected to the air inlet of the exhaust pump (4) through an exhaust inlet channel (10). The oil outlet (9) is connected to the main oil supply channel. The channels (6) are connected by the auxiliary oil supply channel (11). The oil supply pump (5) is connected to the auxiliary oil supply channel (11). The oil-gas separator (2) is connected to the exhaust pump (4) through the exhaust outlet channel (13). The bottom of the oil-gas separator (2) is connected to the main oil supply channel (6) through the separator oil outlet channel (14). The top of the oil-gas separator (2) is connected to the pressure relief and exhaust adjustment valve (16) through the separator oil-gas outlet channel (15).

2. The heavy duty diesel vehicle oil filter feed device of claim 1, wherein: A check valve (12) is installed on the auxiliary oil supply channel (11).

3. The heavy duty diesel vehicle oil filter feed device of claim 2, wherein: The oil pump (5) is provided with an oil inlet channel (501) and an oil outlet channel (502), and the one-way valve (12) is installed between the oil inlet channel (501) and the oil outlet channel (502) and the auxiliary oil supply channel (11).

4. The heavy duty diesel vehicle oil filter feed device of claim 1, wherein: The filter assembly (1) is equipped with a filter inlet (17) on its upper part.

5. The heavy duty diesel vehicle oil filter feeding device according to claim 1, characterized in that: A filter outlet (18) is provided at one end of the main oil supply channel (6).

6. The heavy duty diesel vehicle oil filter feed device of claim 1, wherein: The top of the pressure relief and exhaust valve (16) is provided with an oil and gas inlet passage (19).

Images