Fuel oil collecting block and fuel supply system matched therewith

Abstract

The application discloses a fuel oil collecting block and a fuel supply system matched with the same, which comprises a fuel oil collecting block body, interfaces corresponding to various components and fuel oil cavities are arranged on the fuel oil collecting block body, fuel oil cavities I, fuel oil cavities II, fuel oil cavities III, fuel oil cavities IV, fuel oil cavities V, fuel oil cavities VI and fuel oil cavities VII are arranged in the fuel oil collecting block body, the fuel oil cavities I, the fuel oil cavities II, the fuel oil cavities III and the fuel oil cavities IV are sequentially and side by side arranged along the length direction of the fuel oil collecting block body, the fuel oil cavity I and the fuel oil cavity V are communicated, the fuel oil cavity IV and the fuel oil cavity VI are communicated through the fuel oil cavity VII, the fuel oil collecting block and the fuel supply system matched with the same can improve the reliability of a low-pressure fuel oil system, facilitate installation and maintenance, reduce the risk of pipeline rupture in the use process and improve the use safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the diesel engine technical field, specifically to a fuel oil collecting block and a fuel supply system matched with the same. BACKGROUND

[0002] The fuel system is an important component of the diesel engine, and its main function is to spray a certain amount of clean fuel into the combustion chamber in a certain time, in a certain pressure, in a certain spray shape and quality according to the speed and load of the diesel engine, so as to ensure that the stroke and combustion process of the mixture can be carried out under the most favorable conditions.

[0003] The low-pressure fuel pipeline is an indispensable part of the fuel system, and the low-pressure fuel pipeline connects the fuel tank, the low-pressure fuel pump, the fuel filter, the high-pressure fuel pump, the fuel return cooler, the manual fuel delivery pump and other key components, wherein the interfaces on each component are different, and the relative distance is far or near, which brings great difficulty to the arrangement of the low-pressure fuel pipeline. The pipelines with short distance between components are intertwined with each other, which is difficult to maintain, and the pipelines with long distance between components lack fixed support, which is easy to form a long cantilever structure to cause pipeline rupture, affect the stability of fuel supply, and further affect the working efficiency of the diesel engine. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the defects of the prior art, and to provide a fuel oil collecting block and a fuel supply system matched with the same, which can improve the reliability of the low-pressure fuel system, facilitate installation and maintenance, reduce the risk of pipeline rupture during use, and effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a fuel oil collecting block, comprising a fuel oil collecting block body, wherein the fuel oil collecting block body is provided with interfaces corresponding to each component and fuel cavities.

[0006] As a preferred technical scheme of the present application, the fuel oil collecting block body is provided with fuel cavities I, II, III, IV, V, VI and VII, the fuel cavities I, II, III and IV are arranged in parallel along the length direction of the fuel oil collecting block body, the fuel cavity I and the fuel cavity V are communicated, and the fuel cavity IV and the fuel cavity VI are communicated through the fuel cavity VII.

[0007] As a preferred technical scheme of the present application, two ends of the fuel cavity I are respectively machined with a fuel total oil inlet and a fuel low-pressure pump inlet, two ends of the fuel cavity II are respectively machined with a fuel filter inlet and a fuel low-pressure pump outlet, one side of the fuel cavity II is machined with a fuel manual pump outlet, two ends of the fuel cavity III are respectively machined with a fuel filter outlet and a fuel high-pressure pump inlet, two ends of the fuel cavity IV are respectively machined with a fuel total oil outlet and a fuel high-pressure pump outlet, one end of the fuel cavity V is machined with a fuel manual pump inlet, and two ends of the fuel cavity VI are machined with a fuel injector oil return I and a fuel injector oil return II.

[0008] As a preferred technical scheme of the present application, two through fixing holes are arranged in the fuel oil collecting block body along the length direction of the fuel oil collecting block body.

[0009] As a preferred technical scheme of the present application, the fuel cavity VII is machined through a machining hole on a machining surface.

[0010] A fuel gas supply system of a fuel oil collecting block, fuel tank enters a fuel total oil inlet through a fuel pipeline, flows out a fuel low-pressure pump inlet through a fuel cavity I, enters a low-pressure fuel delivery pump through a fuel pipeline, flows out the low-pressure fuel delivery pump to enter a fuel low-pressure pump outlet through a fuel pipeline, flows out a fuel filter inlet through a fuel cavity II, enters a fuel filter through a fuel pipeline, flows out the fuel filter to enter a fuel filter outlet through a fuel pipeline, flows out a fuel high-pressure pump inlet through a fuel cavity III, enters a high-pressure fuel pump through a fuel pipeline, flows out the high-pressure fuel pump to enter a fuel high-pressure pump outlet through a fuel pipeline, flows out a fuel total oil outlet through a fuel cavity IV, enters a fuel oil return cooler through a fuel pipeline, and flows back to the fuel tank through the fuel pipeline.

[0011] As a preferred technical scheme of the present application, when the low-pressure fuel delivery pump does not work, fuel in the fuel cavity I flows out a fuel manual pump inlet through a fuel cavity V, enters a manual fuel delivery pump through a fuel pipeline, flows out the manual fuel delivery pump to enter a fuel manual pump outlet through a fuel pipeline, and enters the fuel cavity II through the fuel manual pump outlet.

[0012] As a preferred technical scheme of the present application, fuel injector oil return sequentially passes through the fuel cavity VI and the fuel cavity VII through the fuel injector oil return I and the fuel injector oil return II, and enters the fuel cavity IV to enter an oil return pipeline.

[0013] Compared with the prior art, the present application has the beneficial effects that: (1) by setting the fuel oil collecting block body, all parts in the low-pressure fuel oil pipeline system can be connected, the purposes of various interfaces are clear, and the orderly connection with various parts is facilitated, and maintenance is facilitated; (2) processing is convenient, only one raw material is used, and various surfaces are repeatedly bored and milled to complete the processing; (3) high reliability, by using the fuel oil collecting block, an intermediate support point in the pipeline is effectively provided for the fuel oil low-pressure pipeline, long cantilever structure of the fuel oil pipeline is avoided, the service life of the overall pipeline is greatly improved, the risk of pipeline rupture is reduced, and the use safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of the present application;

[0015] Figure 2 is a side view of the present application;

[0016] Figure 3 is a Figure 2 sectional view at A-A in the middle;

[0017] Figure 4 is a Figure 2 sectional view at B-B in the middle;

[0018] Figure 5 is a Figure 2 sectional view at C-C in the middle;

[0019] Figure 6 is a Figure 2 sectional view at D-D in the middle;

[0020] Figure 7 is a Figure 2 sectional view at E-E in the middle;

[0021] Figure 8 is a fuel oil supply flow direction diagram of the present application as a whole;

[0022] Figure 9 is a fuel oil flow direction diagram at fuel oil cavity IV and fuel oil cavity VI of the present application;

[0023] Figure 10 is a fuel oil flow direction diagram at the manual fuel oil delivery pump of the present application.

[0024] In the figure: 1 fuel oil collecting block body, 1-1 fuel oil cavity I, 1-2 fuel oil total inlet, 1-3 fuel oil low pressure pump inlet, 1-4 fuel oil cavity II, 1-5 fuel oil filter inlet, 1-6 fuel oil low pressure pump outlet, 1-7 fuel oil cavity III, 1-8 fuel oil filter outlet, 1-9 fuel oil high pressure pump inlet, 1-10 fuel oil cavity IV, 1-11 fuel oil total return outlet, 1-12 fuel oil high pressure pump outlet, 1-13 fixed hole, 1-14 fuel oil cavity V, 1-15 fuel oil manual pump inlet, 1-16 fuel oil manual pump outlet, 1-17 fuel oil cavity VI, 1-18 fuel injector return I, 1-19 fuel injector return II, 1-20 fuel oil cavity VII, 1-21 processing hole, 1-22 processing surface, 2 fuel tank, 3 low pressure fuel delivery pump, 4 fuel filter, 5 high pressure fuel pump, 6 fuel return cooler, 7 manual fuel delivery pump. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0026] Please refer to Figures 1-7 The present application provides a technical solution: a fuel oil collecting block, comprising a fuel oil collecting block body 1, wherein the fuel oil collecting block body 1 is provided with a fuel oil cavity I 1-1, a fuel oil cavity II 1-4, a fuel oil cavity III 1-7, a fuel oil cavity IV 1-10, a fuel oil cavity V 1-14, a fuel oil cavity VI 1-17 and a fuel oil cavity VII 1-20, the fuel oil cavity I 1-1, the fuel oil cavity II 1-4, the fuel oil cavity III 1-7 and the fuel oil cavity IV 1-10 are arranged in sequence along the length direction of the fuel oil collecting block body 1, the fuel oil cavity I 1-1 and the fuel oil cavity V 1-14 are communicated, and the fuel oil cavity IV 1-10 and the fuel oil cavity VI 1-17 are communicated through the fuel oil cavity VII 1-20.

[0027] Fuel chamber I1-1 has a main fuel inlet 1-2 and a low-pressure pump inlet 1-3 machined at both ends. Fuel chamber II1-4 has a fuel inlet fuel filter inlet 1-5 and a low-pressure pump outlet 1-6 machined at both ends. Fuel chamber II1-4 has a manual pump outlet 1-16 machined on one side. Fuel chamber III1-7 has a fuel inlet fuel filter inlet 1-8 and a high-pressure pump inlet 1-9 machined at both ends. Fuel chamber IV1-10 has a main fuel return port 1-11 and a high-pressure pump outlet 1-12 machined at both ends. Fuel chamber V1-14 has a manual pump inlet 1-15 machined at one end. Fuel chamber VI1-17 has an injector return port I1-18 and an injector return port II1-19 machined at both ends.

[0028] Furthermore, to facilitate the fixing of this fuel collection block, two through fixing holes 1-13 are provided inside the fuel collection block body 1 along its length direction, and a long screw passes through the fixing holes 1-13 to fix it to the outside of the machine body.

[0029] Furthermore, to facilitate the machining of the fuel chamber VII1-20, the fuel chamber VII1-20 is machined through machining holes 1-21 on the machining surface 1-22.

[0030] like Figure 8 As shown, the process of using this fuel collection block for gas supply is as follows: The fuel tank 2 of the gas supply system enters the fuel main inlet 1-2 through the fuel pipeline, flows out through the fuel chamber I1-1 and exits through the fuel inlet low-pressure pump interface 1-3, enters the low-pressure fuel delivery pump 3 through the fuel pipeline, exits through the low-pressure fuel delivery pump 3 and enters through the fuel outlet low-pressure pump interface 1-6 through the fuel pipeline, flows out through the fuel chamber II1-4 and exits through the fuel filter interface 1-5, enters through the fuel pipeline and enters through the fuel filter 4, exits through the fuel filter 4 and enters through the fuel outlet fuel filter interface 1-8 through the fuel pipeline, flows out through the fuel chamber III1-7 and exits through the fuel inlet high-pressure pump interface 1-9, enters through the fuel pipeline and enters through the fuel pipeline high-pressure pump 5, exits through the fuel pipeline high-pressure pump interface 1-12, flows out through the fuel chamber IV1-10 and exits through the fuel main return port 1-11, enters through the fuel return cooler 6 through the fuel pipeline, exits through the fuel return cooler 6 and flows back to the fuel tank 2 through the fuel pipeline.

[0031] like Figure 10 When the low-pressure fuel delivery pump is not working, the fuel in the fuel chamber I1-1 flows out through the fuel chamber V1-14 and out through the fuel inlet manual pump port 1-15, enters the manual fuel delivery pump 7 through the fuel pipeline, flows out of the manual fuel delivery pump 7 and enters the fuel outlet manual pump port 1-16 through the fuel pipeline, and enters the fuel chamber II1-4 through the fuel outlet manual pump port 1-16 to continue the above cycle.

[0032] like Figure 9As shown, the fuel injector return oil sequentially passes through the fuel cavity VI 1-17 and the fuel cavity VII 1-20 through the fuel injector return oil port I1-18 and the fuel injector return oil port II 1-19 into the fuel cavity IV 1-10 into the fuel return pipeline.

[0033] The present application can be connected with the connecting pipeline of each component in order, is convenient for maintenance, and effectively provides the pipeline intermediate support point for the fuel low-pressure pipeline, avoids the formation of long cantilever structure of the fuel pipeline, and improves the service life of the whole pipeline.

[0034] Although embodiments of the present application have been shown and described, it would be appreciated by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fuel oil collection block, characterized by: Including fuel oil collecting block body (1), the fuel oil collecting block body (1) is provided with the interface and fuel oil cavity corresponding with each spare part on it; The fuel oil collecting block body (1) is provided with fuel oil cavity I (1-1), fuel oil cavity II (1-4), fuel oil cavity III (1-7), fuel oil cavity IV (1-10), fuel oil cavity V (1-14), fuel oil cavity VI (1-17) and fuel oil cavity VII (1-20) in it, fuel oil cavity I (1-1), fuel oil cavity II (1-4), fuel oil cavity III (1-7) and fuel oil cavity IV (1-10) are sequentially arranged side by side along the length direction of fuel oil collecting block body (1), fuel oil cavity I (1-1) and fuel oil cavity V (1-14) are communicated, fuel oil cavity IV (1-10) and fuel oil cavity VI (1-17) are communicated through fuel oil cavity VII (1-20). The both ends of fuel oil cavity I (1-1) are respectively machined with fuel oil total oil inlet (1-2) and fuel oil low pressure pump interface (1-3), the both ends of fuel oil cavity II (1-4) are respectively machined with fuel oil filter interface (1-5) and fuel oil low pressure pump interface (1-6), one side of fuel oil cavity II (1-4) is machined with fuel oil manual pump interface (1-16), the both ends of fuel oil cavity III (1-7) are respectively machined with fuel oil filter interface (1-8) and fuel oil high pressure pump interface (1-9), the both ends of fuel oil cavity IV (1-10) are respectively machined with fuel oil total oil return (1-11) and fuel oil high pressure pump interface (1-12), one end of fuel oil cavity V (1-14) is machined with fuel oil manual pump interface (1-15), the both ends of fuel oil cavity VI (1-17) are machined with fuel oil injector return I (1-18) and fuel oil injector return II (1-19).

2. A fuel oil collecting block according to claim 1, characterized in that: The fuel oil collecting block body (1) is provided with two through fixing holes (1-13) along its length direction.

3. A fuel oil collecting block according to claim 1, characterized in that: Fuel oil cavity VII (1-20) is machined through machining hole (1-21) on machining surface (1-22).

4. A gas supply system for a fuel collection block according to claim 1, characterized in that: Fuel tank (2) enters fuel oil total oil inlet (1-2) through fuel pipeline, flows out fuel oil low pressure pump interface (1-3) through fuel oil cavity I (1-1), enters low pressure fuel delivery pump (3) through fuel pipeline, out low pressure fuel delivery pump (3) enters fuel oil low pressure pump interface (1-6) through fuel pipeline, flows out fuel oil filter interface (1-5) through fuel oil cavity II (1-4), enters fuel filter (4) through fuel pipeline, out fuel filter (4) enters fuel oil filter interface (1-8) through fuel pipeline, flows out fuel oil high pressure pump interface (1-9) through fuel oil cavity III (1-7), enters high pressure oil pump (5) through fuel pipeline, flows out high pressure oil pump (5) enters fuel oil high pressure pump interface (1-12) through fuel pipeline, flows out fuel oil total oil return (1-11) through fuel oil cavity IV (1-10), enters fuel oil return cooler (6) through fuel pipeline, out fuel oil return cooler (6) flows back fuel tank (2) through fuel pipeline.

5. A gas supply system according to claim 4, characterised in that: When the low pressure fuel delivery pump is not working, the fuel in the fuel chamber I (1-1) flows out through the fuel chamber V (1-14) through the fuel inlet hand pump interface (1-15), through the fuel pipe into the hand fuel delivery pump (7), flows out of the hand fuel delivery pump (7) through the fuel pipe into the fuel outlet hand pump interface (1-16), through the fuel outlet hand pump interface (1-16) into the fuel chamber II (1-4).

6. The gas supply system according to claim 4, characterized in that: The fuel injector return oil passes through the fuel injector return port I (1-18) and the fuel injector return port II (1-19) in sequence through the fuel chamber VI (1-17) and the fuel chamber VII (1-20) into the fuel chamber IV (1-10) into the fuel return pipe.

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