CN210141179U - High-pressure oil rail assembly of engine - Google Patents
High-pressure oil rail assembly of engine Download PDFInfo
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- CN210141179U CN210141179U CN201920502123.3U CN201920502123U CN210141179U CN 210141179 U CN210141179 U CN 210141179U CN 201920502123 U CN201920502123 U CN 201920502123U CN 210141179 U CN210141179 U CN 210141179U
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- distribution pipe
- inner cavity
- oil
- rail assembly
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Turning (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Fuel-Injection Apparatus (AREA)
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Abstract
The utility model provides an engine high pressure oil rail assembly, including distributing pipe main part, coupling, shutoff piece, sensor joint, injector seat installation support piece, be equipped with first oil through hole in the coupling, its characterized in that: an inner cavity is arranged in the distribution pipe main body, one end of the inner cavity is opened and is blocked by a blocking piece, the distribution pipe main body at the other end of the inner cavity and the pipe joint form an integrally formed sealing structure, and a first oil through hole of the pipe joint is communicated with the inside of the inner cavity and the inside of the pipe joint; the distribution pipe main body is provided with at least one second oil through hole; the sensor joint is connected to the distribution pipe main body, the oil injector base mounting support block is connected to the distribution pipe main body, and the position of the oil injector base mounting support block corresponds to the position of the second oil through hole. The utility model provides a how that prior art exists avoid in the engine high pressure oil rail assembly that the distribution pipe forms the gap with the coupling components of a whole that can function independently and reveals the problem that petrol becomes to need solve.
Description
Technical Field
The utility model relates to an engine part especially relates to an engine high pressure oil rail assembly.
Background
The function of the oil rail is as follows: taking a gasoline engine as an example, the gasoline engine has a plurality of cylinders, and each cylinder is independently provided with an injector for supplying gasoline, and all injectors are connected to a common oil pipe (fuel common rail for short). The working principle is that gasoline is firstly conveyed from an oil tank into an oil rail by an oil pump according to a certain pressure, the gasoline is conveyed into each oil injector by the constant working pressure in the oil rail, and the oil injectors inject the gasoline into cylinders for combustion according to requirements through an electric control device. The fuel rail is independent from the gasoline engine and is kept unchanged in the whole injection combustion process.
High-pressure oil rail: the fuel oil is directly injected into the cylinder, and the high-pressure airflow in the cylinder is utilized to fully atomize the gasoline so as to achieve the purpose of fully burning the gasoline. Because the gasoline is fully combusted, the economic performance of the fuel oil is greatly improved, the carbon dioxide emission is obviously reduced, and the performance of a high-pressure fuel oil engine has excellent performance, and is a gasoline engine technology which is widely adopted internationally at present.
In order to improve the performance of the international high-pressure gasoline engine and save energy and reduce consumption at the same time, the mainstream method is to continuously improve the working pressure and the strength of the whole engine, the performance requirement on a high-pressure oil rail per se is higher and higher, particularly, the requirements on the sealing performance and the pressure resistance of a distribution pipe for a high-pressure oil rail assembly of the engine are higher and higher, an inner cavity 2 inside the distribution pipe in the high-pressure oil rail assembly of the existing engine is generally a through hole (detailed in fig. 1, 2 and 3), one end of the through hole of the inner cavity 2 is an opening, the other end of the through hole of the inner cavity 2 is in split connection inside the distribution pipe body 1 by matching a split pipe joint 11 with a first copper oxide ring 12, but gaps (namely leakage risk points 5) are inevitably formed between the split pipe joint 11 and the inner wall of the distribution pipe body 1 and between the first copper oxide ring, the use rate of gasoline is reduced, and other parts of the automobile can be damaged, so that how to prevent gasoline from leaking from a gap between a pipe joint and a distribution pipe of the distribution pipe in the high-pressure oil rail assembly of the engine (especially under the condition of high pressure inside the distribution pipe in the high-pressure oil rail assembly of the engine) becomes a problem to be solved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an engine high pressure oil rail assembly, mainly solve how that above-mentioned prior art exists and avoid in the engine high pressure oil rail assembly that the distribution pipe forms the gap with the union coupling components of a whole that can function independently and reveal the problem that petrol (especially under the inside highly compressed condition of distribution pipe in the engine high pressure oil rail assembly) becomes to need the solution, reach the sealing performance who further promotes distribution pipe in the engine high pressure oil rail assembly through solving aforementioned problem, pressure resistance, reduce the part, reduce the assembly process, reduce the purpose of the energy consumption in the production process.
In order to realize the purpose, the utility model discloses the technical scheme who adopts is: the utility model provides an engine high pressure oil rail assembly, includes distributing pipe main part, coupling, shutoff piece, sensor joint, injector seat installation support piece, be equipped with first oil through hole, its characterized in that in the coupling: an inner cavity is arranged in the distribution pipe main body, one end of the inner cavity is opened and is blocked by a blocking piece, the distribution pipe main body at the other end of the inner cavity and the pipe joint form an integrally formed sealing structure, and a first oil through hole of the pipe joint is communicated with the inside of the inner cavity and the inside of the pipe joint; the distribution pipe main body is provided with at least one second oil through hole; the sensor joint is connected to the distribution pipe main body, the oil injector base mounting support block is connected to the distribution pipe main body, and the position of the oil injector base mounting support block corresponds to the position of the second oil through hole.
Further, the other end of the inner cavity is in a shape of a cylinder, a cone, a spherical surface, a W shape, a right angle or a rounded corner, or a shape formed by combining at least two shapes of the cylinder, the cone, the spherical surface, the W shape, the right angle and the rounded corner.
Further, the cross-sectional shape of the inner cavity is a circle, a square, a rectangle, an ellipse, a trapezoid, a regular pentagon, a regular hexagon, a regular polygon or an irregular polygon.
Further, the cross section formed on the outer edge of the distribution pipe body is in a shape of a circle, a square, a rectangle, an ellipse, a trapezoid, a regular pentagon, a regular hexagon, a regular polygon or an irregular polygon.
Furthermore, a break angle at the other end of the inner cavity is in arc transition, and the R angle of the arc transition is at least 0.1 mm; the central axis of the distribution pipe body is superposed with the central axis of the inner cavity; the plugging piece is a plugging cover and a second oxygen-free copper ring, and the plugging cover penetrates through the second oxygen-free copper ring and then is connected with one end of the inner cavity opening to form a plugging structure.
Further, the minimum thickness of the distribution pipe body is at least 1 mm; the wall thickness of the pipe joint is at least 1 mm; the depth of the inner cavity is 1-1000 mm.
Further, the oil injector seat mounting support block is composed of an oil injector seat and a mounting support block, and the oil injector seat mounting support block is integrated or split.
Furthermore, the distribution pipe main body and the plugging cover, the distribution pipe main body and the sensor connector, and the distribution pipe main body and the injector seat mounting support block are pre-assembled by press fitting or riveting or laser welding or tack welding or resistance welding, and then connected by high-temperature brazing or high-frequency induction welding or bonding of a connecting agent.
Further, the cross-sectional shape of the joint of the pipe joint and the distribution pipe body is a shape formed by combining at least two shapes of a circle, a square, a rectangle, an ellipse, a trapezoid, a quincunx, a gear, a regular pentagon, a regular hexagon, a regular polygon, or an irregular polygon.
The utility model provides an engine high pressure fuel rail assembly, is including the distributing pipe that is arranged in distributing the fuel to different fueling injection equipment for realize that the fuel gets into the coupling device of distributing pipe from the oil pump, a sprayer seat installation device for realizing the function of installation sprayer and being connected with the engine, a sensor piecing devices for realizing the installation pressure sensor function, a shutoff device for keeping away from the one end opening of coupling device on the shutoff distributing pipe, its characterized in that: an inner cavity is arranged in the distribution pipe, one end of the inner cavity is opened and is blocked by a blocking device, the distribution pipe at the other end of the inner cavity and the pipe joint device form an integrally formed sealing structure, and the pipe joint device is communicated with the inner cavity and the outside of the distribution pipe; the oil sprayer seat mounting device is connected with the distribution pipe, and the sensor connector device is connected with the distribution pipe.
In view of the above technical features, the utility model discloses following beneficial effect has:
the distribution pipe of the utility model can improve the sealing performance, the pressure resistance and the mechanical strength of the distribution pipe sealed by the integrated pipe joint in the high-pressure oil rail assembly of the engine by the design of integrally forming and connecting the distribution pipe body and the pipe joint; meanwhile, due to the integrated design of the distribution pipe sealed by the integrated pipe joint in the high-pressure oil rail assembly of the engine instead of the split type, parts required by products can be reduced, assembly procedures (such as equipment, clamps, labor and time required for assembly; such as equipment, tools, labor and time required for quality inspection) can be reduced, and energy consumption in the production process can be reduced.
The utility model discloses the product mainly used engine high pressure oil rail assembly can be applicable to the engine of gasoline engine, diesel engine, gas engine, other types's fuel engine and other energy, and these engines can apply to in the engine of large-scale machinery such as motor vehicle, car, boats and ships, aircraft.
The utility model provides a technical scheme can design different sizes according to actual conditions to satisfy the demand of different engines to high-pressure oil rail assembly.
Drawings
FIG. 1 is a schematic diagram of a high pressure fuel rail assembly of an engine according to the prior art;
FIG. 2 is a cross-sectional view of a prior art distributor tube in a high pressure fuel rail assembly for an engine;
FIG. 3 is a schematic structural diagram of a split-type pipe joint, a first oxygen-free copper ring, and a distribution pipe cavity connection of a high-pressure oil rail assembly of an engine in the prior art (i.e., an enlarged view of a portion M in FIG. 2);
FIG. 4 is a schematic structural diagram of a high-pressure oil rail assembly of an engine in embodiment 1;
FIG. 5 is a schematic structural diagram of a distribution pipe of a high-pressure oil rail assembly of an engine in embodiment 1;
FIG. 6 is a cross-sectional view of a distribution pipe of a high-pressure fuel rail assembly of the engine in embodiment 1;
FIG. 7 is a schematic structural view illustrating a distribution pipe body and a pipe joint of a distribution pipe of a high-pressure fuel rail assembly of an engine according to embodiment 1, wherein the distribution pipe body and the pipe joint are integrally connected (i.e., an enlarged view of a portion N in FIG. 6);
FIG. 8 is a cross-sectional view of FIG. 7 taken along line A-A (circle) of FIG. 1;
FIG. 9 is a cross-sectional view 2 (square) taken along line A-A of FIG. 7;
FIG. 10 is a cross-sectional view (rectangular) at A-A of FIG. 7;
FIG. 11 is a cross-sectional view 4 (oval) taken at A-A of FIG. 7;
FIG. 12 is a cross-sectional view of portion A-A of FIG. 7 (pentagonal shape);
FIG. 13 is a cross-sectional view taken along line A-A of FIG. 7 (quincunx);
FIG. 14 is a cross-sectional view of FIG. 7 taken at A-A (gear shape);
FIG. 15 is a schematic view showing the structure of the connection between the distribution pipe and the second oxygen-free copper ring and the blocking cover of the high-pressure oil rail assembly of the engine in embodiment 1;
FIG. 16 is a schematic structural view of a distribution pipe and a second oxygen-free copper ring, a blanking cover and an injector mount mounting bracket block of the high pressure fuel rail assembly of the engine of example 1 before connection;
FIG. 17 is a schematic illustration of the configuration of the distribution tube and the second oxygen-free copper ring, the blanking cap, and the injector mount bracket block of the high pressure fuel rail assembly of the engine of example 1 after they are connected;
FIG. 18 is a schematic view showing an integrated structure of an injector mount mounting bracket block of a high-pressure fuel rail assembly of an engine according to embodiment 1;
FIG. 19 is a schematic view showing an upper and lower split type structure of an injector mount mounting bracket block of a high-pressure oil rail assembly of an engine according to embodiment 1;
FIG. 20 is a left-right split type structural view of an injector mount mounting bracket block of a high-pressure oil rail assembly of an engine according to embodiment 1;
FIG. 21 is a schematic structural view of the bottom of the distribution pipe inner cavity of a high-pressure oil rail assembly of an engine in embodiment 2;
FIG. 22 is a schematic structural view of the bottom of the distribution pipe inner cavity of the high-pressure oil rail assembly of the engine in embodiment 3;
FIG. 23 is a schematic structural view of the bottom of the distribution pipe inner cavity of the high-pressure oil rail assembly of the engine in embodiment 4;
FIG. 24 is a schematic structural view of the bottom of the distribution pipe inner cavity of the high-pressure oil rail assembly of the engine in embodiment 5.
In the figure: 1 is a distributing pipe body in the prior art, 1-1 is an oil through hole on the distributing pipe body in the prior art, 2 is an inner cavity of the distributing pipe in the prior art, 3 is a sealing cover for the distributing pipe in the prior art, 4 is a second oxygen-free copper ring for the distributing pipe in the prior art, 5 is a leakage risk point of the distributing pipe in the prior art, 6 is the distributing pipe body, 6-1 is a second oil through hole of the distributing pipe body, 7 is an inner cavity of the distributing pipe, 7-1 is the bottom of the inner cavity of the distributing pipe, 8 is a pipe joint, 8-1 is a first oil through hole of the pipe joint, 8-2 is the inside of the pipe joint, 9 is a bevel, 10 is a sensor joint, 11 is a split pipe joint in the prior art, 12 is a first oxygen-free copper ring for the distributing pipe in the prior art, and 13 is; 13-1 is a fixed block, 13-1-1 is a first part of the fixed block after being split, 13-1-2 is a second part of the fixed block after being split, 13-2 is an installation support block, 13-3 is an oil injector seat, 13-4 is a through hole on the fixed block, M is the bottom of an inner cavity of a distribution pipe in the prior art, and N is the bottom of the inner cavity of the distribution pipe (namely the bottom of the inner cavity of the distribution pipe close to one end of a pipe joint).
Detailed Description
The present invention will be further described with reference to the following detailed description. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
Referring to fig. 4 to 20, embodiment 1, the present invention provides an engine high-pressure oil rail assembly, which includes a distribution pipe main body 6, a pipe joint 8, a plugging member (such as a plugging cover 3, a second oxygen-free copper ring 4), a sensor joint 10, and an injector seat mounting bracket block 13, wherein a first oil through hole 8-1 is provided in the pipe joint 8; an inner cavity 7 is arranged in the distributing pipe main body 6, one end of the inner cavity 7 is opened and is plugged by a plugging piece (such as a plugging cover 3 and a second oxygen-free copper ring 4), the distributing pipe body 6 at the other end of the inner cavity 7 and a pipe joint 8 form an integrally formed sealing structure (namely, the pipe joint 8 and the distributing pipe body 6 are integrally sealed and have no gap, and no leakage risk point exists at the position, namely, the distributing pipe inner cavity 7 is a non-through hole, so that the sealing performance and the pressure resistance of the product are improved); the one-piece union-sealed dispensing tube is used to dispense gasoline to different fuel injectors. The first oil through hole 8-1 of the pipe joint is communicated with the inside of the inner cavity 7 and the inside 8-2 of the pipe joint, namely the inside 8-2 of the pipe joint guides external fuel (such as gasoline, diesel and the like) into the inner cavity 7 of the distribution pipe through the first oil through hole 8-1 of the pipe joint. The distribution pipe main body 6 is provided with at least one second oil through hole 6-1 (one or two or three or more than three, which are distributed on the distribution pipe main body 6 according to the actual situation, for example, the second oil through holes 6-1 are distributed in a straight line, the straight line is parallel to the axis of the distribution pipe main body 6, or irregularly distributed), in this embodiment 1, the number of the second oil through holes 6-1 is four, the second oil through holes 6-1 of the distribution pipe main body 6 are connected with the inner cavity 7 and the injector seat mounting support block 13, and the second oil through holes 6-1 are used for allowing gasoline (or other fuel) in the distribution pipe main body inner cavity 7 to enter the injector seat mounting support block 13, and then the high pressure of the distribution pipe main body inner cavity 7 is used for injecting the gasoline (or other fuel) into the cylinder through the injector seat;
the blocking cover 3 passes through the second oxygen-free copper ring 4 and then is connected with one end of the opening of the inner cavity 7 to form a blocking structure, and the second oxygen-free copper ring 12 is used for welding materials, namely, the distributing pipe main body 6 and the blocking cover 3 are welded together and used for blocking the opening left by the processing inner cavity. A sensor connector 10 is attached to the dispensing tube body 6, the sensor connector 10 serving the function of mounting a pressure sensor. The oil injector seat mounting support block 13 is connected to the distribution pipe main body 6, the position of the oil injector seat mounting support block 13 corresponds to the position of the second oil through hole 6-1, and the oil injector seat mounting support block 13 is used for realizing the function of mounting a gasoline oil injector and the connection with a gasoline engine.
The other end of the inner cavity 7 (namely the bottom 7-1 of the inner cavity, namely the bottom of the inner cavity of the distribution pipe close to one end of the pipe joint, the bottom 7-1 of the inner cavity is communicated with the inside 8-2 of the pipe joint through the first oil through hole 8-1 of the pipe joint) is conical (which belongs to a conical situation), the stress concentration situation of the bottom 7-1 of the inner cavity can be effectively improved, and the bottom can also be designed into a cylindrical shape, a spherical shape, a W-shaped shape, a chamfered angle, a shape formed by combining at least two shapes of the cylindrical shape, the conical shape, the spherical shape, the W-shaped shape, the chamfered angle and the chamfered angle according to the actual situation, and the combination. The knuckle 9 at the other end of the inner cavity 7 of the distribution pipe (namely the bottom 7-1 of the inner cavity) is in arc transition (such as an R angle or a C angle), and the arc transition can help to effectively reduce stress concentration, effectively protect the bottom 7-1 of the inner cavity and prolong the service life of the distribution pipe; the R angle of the arc transition at the break angle 9 is at least 0.1 mm, and in this embodiment 1, the R angle of the arc transition at the break angle 9 is 2 mm.
The cross section of the inner cavity 7 is circular, and can be designed into a square, a rectangle, an ellipse, a trapezoid, a regular pentagon, a regular hexagon, a regular polygon or an irregular polygon according to actual conditions, and the combination of at least two shapes can meet the requirements of different conditions.
The cross section formed on the outer edge of the distribution pipe body 6 is circular, and can be designed into a square, a rectangle, an ellipse, a trapezoid, a regular pentagon, a regular hexagon, a regular polygon or an irregular polygon according to actual conditions, and the combination of at least two shapes meets the requirements of different conditions.
The axis of distributing pipe body 6 and the axis coincidence of inner chamber 7 can help inner chamber 7 to be in distributing pipe body central point and put, and is rational in infrastructure, ensures that each position homoenergetic of distributing pipe body can bear pressure in the inner chamber 7.
The minimum thickness of the distribution pipe body is at least 1 mm; the wall thickness of the pipe joint is at least 1 mm; the depth of the inner cavity 7 is 1-1000 mm. In view of the fact that the cross-sectional shape of the inner cavity 7 is circular and the cross-sectional shape formed by the outer edge of the distribution pipe body is circular, the thickness of the distribution pipe body in this embodiment 1 is 4.5 mm, the wall thickness of the pipe joint is 9 mm, and the depth of the inner cavity is 329 mm.
The cross-sectional shape of the joint (i.e., the portion a-a in fig. 7) where the pipe joint 8 and the distribution pipe body 6 are integrally formed is a circle (see fig. 8), and may be designed and processed into a square (see fig. 9), a rectangle (see fig. 10), an ellipse (see fig. 11), a trapezoid, a quincunx (see fig. 13), a gear (see fig. 14), a regular pentagon (see fig. 12), a regular hexagon, a regular polygon, an irregular polygon, or a shape formed by combining at least two shapes of a circle, a square, a rectangle, an ellipse, a trapezoid, a quincunx, a gear, a regular pentagon, a regular hexagon, a regular polygon, and an irregular polygon, in addition to the circle. The design is convenient for assembling and disassembling other parts on the pipe joint.
The oil injector seat mounting support block 13 consists of an oil injector seat 13-3 and a mounting support block 13-2, the oil injector seat mounting support block 13 is integrated or split, namely the oil injector seat mounting support block 13 comprises a fixing block 13-1 for connecting the distribution pipe main body 6, the mounting support block 13-2 and the oil injector seat 13-3, a mounting support block 13-2 for fixing a product (namely an engine high-pressure oil rail assembly or an oil rail containing the engine high-pressure oil rail assembly) on an engine through a locking screw, an oil injector seat 13-3 for mounting an oil injector, and a through hole 13-4 on the fixing block 13-1 for passing a hole of the screw, wherein the oil injector seat mounting support block 13 is connected with the mounting support block 13-2 and the oil injector seat 13-3 in an integrated mode that the mounting support block 13-2 and the oil injector seat 13-3 can be fixedly connected with the fixing block 13-1, the structure is favorable for good strength and is commonly used for products with high performance requirements, but the processing difficulty is high and the cost is high;
the oil injector seat mounting support block 13 is connected in an up-and-down split type manner, namely the mounting support block 13-2 is connected with the fixed block 13-1 in a split manner, and the oil injector seat 13-3 can be fixedly connected with the fixed block 13-1, so that the structure is favorable for products with conventional requirements, and the structure of a single part is simple;
the left and right split type connection mode of the oil injector seat mounting bracket block 13 is that the fixed block 13-1 is split, one part is divided into two parts (three or more parts can be split according to the situation) to form a first part 13-1-1 after the fixed block 13-1 is split and a second part 13-1-2 after the fixed block 13-1 is split, a through hole 13-4 on the fixed block 13-1 is positioned on the first part 13-1-1 after the fixed block 13-1 is split, the first part 13-1-1 after the fixed block 13-1 is split is fixedly connected with the mounting bracket block 13-2, the oil injector seat 13-3 is fixedly connected with the second part 13-1-2 after the fixed block 13-1 is split, and the structure is favorable for products with the conventional requirements, the structure of a single part is simple;
pre-assembling is carried out between the distribution pipe main body 6 and the blocking cover 3, between the distribution pipe main body 6 and the sensor connector 10 and between the distribution pipe main body 6 and the injector seat mounting bracket block 13, wherein the pre-assembling mode comprises but is not limited to press fitting and/or riveting and/or laser welding and/or tack welding and/or resistance welding, and then forming welding is carried out, and the forming welding mode comprises but is not limited to high-temperature brazing and/or high-frequency induction welding, for example: copper paste and high temperature brazing process. In this embodiment 1, the second oxygen-free copper ring 4 and the blocking cover 3 are pre-installed at a predetermined position at the opening end of the inner cavity 7 of the distribution pipe main body 6 by a press-fitting method; an oil injector seat mounting support block 13 and a sensor joint 10 are preassembled at a specified position on the distribution pipe main body 6 in a welding mode and the like; and firmly connecting the parts together by using copper paste and a high-temperature brazing process at the assembly joints. The assembly environment of each component in the high-pressure oil rail assembly of the engine is preferably 1000-1200 ℃, the copper paste can be completely in a liquid state in the temperature range, and the copper paste flows and has excellent adsorption performance.
Gasoline (or other fuel) enters the inner cavity of the distribution pipe from the oil pump through the first oil through hole 8-1 of the pipe joint 8, the pressure in the inner cavity of the distribution pipe rises, and no gap exists at the bottom of the inner cavity of the distribution pipe (namely the bottom 7-1 of the inner cavity of the distribution pipe and the pipe joint 8 are integrally formed to form a sealing structure), so that no leakage risk point exists, and the gasoline loss is reduced. The pressure of the gasoline in the inner cavity 7 of the distribution pipe is known through a sensor and a sensor joint 10, and the pressure of the gasoline in the inner cavity 7 of the distribution pipe is controlled by controlling the speed of the gasoline flowing into the inner cavity 7 of the distribution pipe; gasoline in the inner cavity 7 of the distribution pipe enters the oil sprayer seat mounting support block 13 and the oil sprayer through the second oil through hole 6-1 on the distribution pipe under the action of pressure, and then the gasoline is sprayed into the gasoline engine through the oil sprayer.
Referring to fig. 21, embodiment 2, the present invention provides an engine high-pressure oil rail assembly, this embodiment 2 is basically the same as embodiment 1, except that: the other end of the inner cavity 7 (namely the bottom 7-1 of the inner cavity) is cylindrical; the knuckle 9 at the other end of the inner cavity 7 (i.e. the bottom 7-1 of the inner cavity) is in arc transition (such as an R angle or a C angle), and the arc transition can help to effectively reduce stress concentration, effectively protect the bottom 7-1 of the inner cavity and prolong the service life of the distribution pipe; the R angle of the arc transition at the break angle 9 is at least 0.1 mm, and in this embodiment 2, the R angle of the arc transition at the break angle 9 is 2 mm.
Meanwhile, the cross-sectional shape of the joint (see fig. 21, i.e., the portion B-B) where the pipe joint 8 and the distribution pipe body 6 are integrally formed is a circle (see fig. 8), and may be designed and processed into a square shape (see fig. 9), a rectangular shape (see fig. 10), an oval shape (see fig. 11), a trapezoid shape, a quincunx shape (see fig. 13), a gear shape (see fig. 14), a regular pentagon shape (see fig. 12), a regular hexagon shape, a regular polygon shape, an irregular polygon shape, or a shape formed by combining at least two shapes of a circle, a square, a rectangle, an oval shape, a trapezoid shape, a quincunx shape, a gear shape, a regular pentagon shape, a regular. The design is convenient for assembling and disassembling other parts on the pipe joint.
Referring to fig. 22, embodiment 3, the present invention provides an engine high-pressure oil rail assembly, this embodiment 3 is basically the same as embodiment 1, except that: the other end of the inner cavity 7 (namely the bottom 7-1 of the inner cavity) is spherical, so that the stress concentration condition of the bottom 7-1 of the inner cavity can be effectively improved.
Meanwhile, the cross-sectional shape of the joint (see fig. 22, i.e., the C-C portion) where the pipe joint 8 and the distribution pipe body 6 are integrally formed is a circle (see fig. 8), and may be designed and processed into a square shape (see fig. 9), a rectangle shape (see fig. 10), an ellipse shape (see fig. 11), a trapezoid shape, a quincunx shape (see fig. 13), a gear shape (see fig. 14), a regular pentagon shape (see fig. 12), a regular hexagon shape, a regular polygon shape, an irregular polygon shape, or a shape formed by combining at least two shapes of a circle, a square, a rectangle, an ellipse, a trapezoid shape, a quincunx shape, a gear shape, a regular pentagon shape, a regular hexagon. The design is convenient for assembling and disassembling other parts on the pipe joint.
Referring to fig. 23, embodiment 4, the present invention provides a high-pressure oil rail assembly for an engine, embodiment 4 is substantially the same as embodiment 1, except that: the other end of the inner cavity 7 (namely the bottom 7-1 of the inner cavity) is W-shaped (namely the cross section of the central axis of the distribution pipe body 6 at the bottom of the inner cavity, or the bottom 7-1 of the inner cavity is W-shaped), so that the stress concentration condition of the bottom 7-1 of the inner cavity can be effectively improved. The break angle 9 at the other end of the inner cavity 7 (namely the bottom 7-1 of the inner cavity) is in arc transition, and the arc transition can help effectively reduce stress concentration, effectively protect the bottom 7-1 of the inner cavity and prolong the service life of the distribution pipe; the R angle of the arc transition at the break angle 9 is at least 0.1 mm, and in this embodiment 2, the R angle of the arc transition at the break angle 9 is 2 mm.
Meanwhile, the cross-sectional shape of the joint (see fig. 23, i.e., the D-D portion) where the pipe joint 8 and the distribution pipe body 6 are integrally formed is a circle (see fig. 8), and may be designed and processed into a square shape (see fig. 9), a rectangle shape (see fig. 10), an ellipse shape (see fig. 11), a trapezoid shape, a quincunx shape (see fig. 13), a gear shape (see fig. 14), a regular pentagon shape (see fig. 12), a regular hexagon shape, a regular polygon shape, an irregular polygon shape, or a shape formed by combining at least two shapes of a circle, a square, a rectangle, an ellipse, a trapezoid shape, a quincunx shape, a gear shape, a regular pentagon shape, a regular hexagon. The design is convenient for assembling and disassembling other parts on the pipe joint.
Referring to fig. 24, embodiment 5, the present invention provides an engine high-pressure oil rail assembly, this embodiment 5 is basically the same as embodiment 1, except that: the shape of the other end of the inner cavity 7 (i.e., the bottom 7-1 of the inner cavity) is a combined structure of the inner cavity 7 (i.e., a shape formed by combining at least two of a cylindrical shape, a conical shape, a spherical shape, a straight chamfer angle, and a round chamfer angle and communicating with each other), in this embodiment 5, the cylindrical shape and the spherical shape are combined to form the structure of the inner cavity 7, and at this time, the spherical shape is located at the top of the cylindrical shape and is closer to the pipe joint 8, so that the stress concentration condition of the bottom 7. The break angle 9 at the other end of the inner cavity 7 (namely the bottom 7-1 of the inner cavity) is in arc transition, and the arc transition can help effectively reduce stress concentration, effectively protect the bottom 7-1 of the inner cavity and prolong the service life of the distribution pipe; the R angle of the arc transition at the break angle 9 is at least 0.1 mm, and in this embodiment 2, the R angle of the arc transition at the break angle 9 is 2 mm.
Meanwhile, the cross-sectional shape of the joint (see fig. 24, i.e., the portion E-E) where the pipe joint 8 and the distribution pipe body 6 are integrally formed is a circle (see fig. 8), and may be designed and processed into a square shape (see fig. 9), a rectangular shape (see fig. 10), an oval shape (see fig. 11), a trapezoid shape, a quincunx shape (see fig. 13), a gear shape (see fig. 14), a regular pentagon shape (see fig. 12), a regular hexagon shape, a regular polygon shape, an irregular polygon shape, or a shape formed by combining at least two shapes of a circle, a square, a rectangle, an oval shape, a trapezoid shape, a quincunx shape, a gear shape, a regular pentagon shape, a regular. The design is convenient for assembling and disassembling other parts on the pipe joint.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.
Claims (10)
1. The utility model provides an engine high pressure oil rail assembly, includes distributing pipe main part, coupling, shutoff piece, sensor joint, injector seat installation support piece, be equipped with first oil through hole, its characterized in that in the coupling: an inner cavity is arranged in the distribution pipe main body, one end of the inner cavity is opened and is blocked by a blocking piece, the distribution pipe main body at the other end of the inner cavity and the pipe joint form an integrally formed sealing structure, and a first oil through hole of the pipe joint is communicated with the inside of the inner cavity and the inside of the pipe joint; the distribution pipe main body is provided with at least one second oil through hole; the sensor joint is connected to the distribution pipe main body, the oil injector base mounting support block is connected to the distribution pipe main body, and the position of the oil injector base mounting support block corresponds to the position of the second oil through hole.
2. The engine high pressure fuel rail assembly of claim 1, wherein: the other end of the inner cavity is in a shape of a cylinder, a cone, a spherical surface, a W shape, a right angle or a rounded corner, or a shape formed by combining at least two shapes of the cylinder, the cone, the spherical surface, the W shape, the right angle and the rounded corner.
3. The engine high pressure fuel rail assembly of claim 2, wherein: the cross section of the inner cavity is in a shape of a circle, a square, a rectangle, an ellipse, a trapezoid, a regular pentagon, a regular hexagon, a regular polygon or an irregular polygon.
4. The engine high pressure fuel rail assembly of claim 3, wherein: the cross section formed by the outer edge of the distribution pipe body is in a circular or square or rectangular or oval or trapezoid or regular pentagon or regular hexagon or regular polygon or irregular polygon shape.
5. The engine high pressure fuel rail assembly of claim 4, wherein: the bevel at the other end of the inner cavity is in arc transition, and the R angle of the arc transition is at least 0.1 mm; the central axis of the distribution pipe body is superposed with the central axis of the inner cavity; the plugging piece is a plugging cover and a second oxygen-free copper ring, and the plugging cover penetrates through the second oxygen-free copper ring and then is connected with one end of the inner cavity opening to form a plugging structure.
6. The engine high pressure fuel rail assembly of claim 5, wherein: the minimum thickness of the distribution pipe body is at least 1 mm; the wall thickness of the pipe joint is at least 1 mm; the depth of the inner cavity is 1-1000 mm.
7. The engine high pressure fuel rail assembly of claim 6, wherein: the oil injector seat mounting support block is composed of an oil injector seat and a mounting support block, and the oil injector seat mounting support block is integrated or split.
8. The engine high pressure fuel rail assembly of claim 7, wherein: the distribution pipe main body and the blocking cover, the distribution pipe main body and the sensor connector, and the distribution pipe main body and the injector seat mounting support block are preassembled by press fitting or riveting or laser welding or tack welding or resistance welding, and then connected by high-temperature brazing or high-frequency induction welding or bonding of a connecting agent.
9. An engine high pressure fuel rail assembly as claimed in any one of claims 1 to 8, wherein: the cross section of the joint of the pipe joint and the distribution pipe body is in a shape of a circle, a square, a rectangle, an ellipse, a trapezoid, a quincunx, a gear, a regular pentagon, a regular hexagon, a regular polygon or an irregular polygon, or a shape formed by combining at least two shapes of a circle, a square, a rectangle, an ellipse, a trapezoid, a quincunx, a gear, a regular pentagon, a regular hexagon, a regular polygon and an irregular polygon.
10. The utility model provides an engine high pressure fuel rail assembly, is including the distributing pipe that is arranged in distributing the fuel to different fueling injection equipment for realize that the fuel gets into the coupling device of distributing pipe from the oil pump, a sprayer seat installation device for realizing the function of installation sprayer and being connected with the engine, a sensor piecing devices for realizing the installation pressure sensor function, a shutoff device for keeping away from the one end opening of coupling device on the shutoff distributing pipe, its characterized in that: an inner cavity is arranged in the distribution pipe, one end of the inner cavity is opened and is blocked by a blocking device, the distribution pipe at the other end of the inner cavity and the pipe joint device form an integrally formed sealing structure, and the pipe joint device is communicated with the inner cavity and the outside of the distribution pipe; the oil sprayer seat mounting device is connected with the distribution pipe, and the sensor connector device is connected with the distribution pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/102731 WO2020119180A1 (en) | 2018-12-11 | 2019-08-27 | Distribution pipe and machining process therefor, and engine high-pressure fuel rail assembly |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811507665 | 2018-12-11 | ||
| CN2018115076656 | 2018-12-11 |
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| CN210141179U true CN210141179U (en) | 2020-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910297982.8A Pending CN109944725A (en) | 2018-12-11 | 2019-04-15 | A kind of distribution pipe and its processing technology and engine high pressure oil rail assembly |
| CN201920502099.3U Active CN209942989U (en) | 2018-12-11 | 2019-04-15 | Distributing pipe with integrated pipe joint seal |
| CN201920502123.3U Active CN210141179U (en) | 2018-12-11 | 2019-04-15 | High-pressure oil rail assembly of engine |
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| CN201910297982.8A Pending CN109944725A (en) | 2018-12-11 | 2019-04-15 | A kind of distribution pipe and its processing technology and engine high pressure oil rail assembly |
| CN201920502099.3U Active CN209942989U (en) | 2018-12-11 | 2019-04-15 | Distributing pipe with integrated pipe joint seal |
Country Status (2)
| Country | Link |
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| CN (3) | CN109944725A (en) |
| WO (1) | WO2020119180A1 (en) |
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| CN109944725A (en) * | 2018-12-11 | 2019-06-28 | 上海威克迈龙川汽车发动机零件有限公司 | A kind of distribution pipe and its processing technology and engine high pressure oil rail assembly |
| CN113231585B (en) * | 2021-04-29 | 2023-08-01 | 上海众源燃油分配器制造有限公司 | Forging process for stainless steel gasoline 500bar high-pressure oil rail |
| CN113960974B (en) * | 2021-12-22 | 2022-03-22 | 南京尚景智造科技有限公司 | Press-fitting control method and system for engine cylinder block plug |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4217941B2 (en) * | 2000-12-08 | 2009-02-04 | 株式会社デンソー | Fuel injection apparatus and adjustment method thereof |
| EP1741923B1 (en) * | 2005-07-08 | 2009-09-02 | C.R.F. Societa Consortile per Azioni | A connection system of a tubular rail for high-pressure fuel |
| DE102010051004A1 (en) * | 2010-11-10 | 2012-05-10 | Poppe & Potthoff Gmbh | Fuel rail for fuel rail assembly, for use in fuel injection system, has cross hole, which guides from inside of fuel rail through its wall to its outer side |
| KR20130138610A (en) * | 2012-06-11 | 2013-12-19 | 현대자동차주식회사 | High pressure fuel rail apparatus for gdi engine and manufacturing method for the same |
| CN102848143A (en) * | 2012-08-29 | 2013-01-02 | 苏州市意可机电有限公司 | Processing technology of round pipe connector |
| CN203285591U (en) * | 2013-04-30 | 2013-11-13 | 成都威特电喷有限责任公司 | Gasoline direct injection fuel machine high pressure fuel rail |
| CN203499881U (en) * | 2013-09-26 | 2014-03-26 | 长城汽车股份有限公司 | Fuel guide rail, engine comprising fuel guide rail and vehicle comprising fuel guide rail |
| US10473075B2 (en) * | 2015-01-30 | 2019-11-12 | Hitachi Automotive Systems, Ltd. | Fuel rail and method of manufacturing same |
| CN204921225U (en) * | 2015-09-06 | 2015-12-30 | 重庆科杰实业有限责任公司 | Plastics fuel distributing pipe assembly |
| CN108397324A (en) * | 2018-04-27 | 2018-08-14 | 上海众源燃油分配器制造有限公司 | A kind of gasoline high pressure oil rail and its processing technology |
| CN109944725A (en) * | 2018-12-11 | 2019-06-28 | 上海威克迈龙川汽车发动机零件有限公司 | A kind of distribution pipe and its processing technology and engine high pressure oil rail assembly |
-
2019
- 2019-04-15 CN CN201910297982.8A patent/CN109944725A/en active Pending
- 2019-04-15 CN CN201920502099.3U patent/CN209942989U/en active Active
- 2019-04-15 CN CN201920502123.3U patent/CN210141179U/en active Active
- 2019-08-27 WO PCT/CN2019/102731 patent/WO2020119180A1/en active Application Filing
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| CN109944725A (en) | 2019-06-28 |
| CN209942989U (en) | 2020-01-14 |
| WO2020119180A1 (en) | 2020-06-18 |
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Address after: 201112 No. 96, Jiangchao Road, Minhang District, Shanghai Patentee after: Saiwo Zhizao (Shanghai) Technology Co.,Ltd. Address before: No.20196 minchao Road, Pujiang Town, Shanghai Patentee before: SHANGHAI WINKELMANN LONGCHUAN (SWL) MOTORCOMPONENTS Co.,Ltd. |