High-pressure common rail pipe component for test

Abstract

The utility model relates to a high pressure common rail pipe component for test, including common rail pipe, end cap, first seal ring and second seal ring, when the two common rail pipe is connected through first mounting component, the end of two common rail pipe is attached to each other, the first seal ring is located between the two common rail pipe, the second seal ring is located between the two common rail pipe, and the second seal ring is located between the two common rail pipe. The end cover is located between the two common rail pipes and is in interference connection with the inner side walls of the two common rail pipes, when the end cover is connected with the common rail pipes through a second installation component, the end of the end cover is opposite to the ends of the common rail pipes, and the second sealing ring is located between the end cover and the common rail pipes and is in interference connection with the inner side walls of the end cover and the inner side walls of the common rail pipes. According to the utility model, the product development progress is accelerated, the development cost is reduced, and the product competitiveness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of a high-pressure common rail in a fuel system, in particular to a high-pressure common rail pipe component for testing. Background Art

[0002] In recent years, the shipping market has an increasing demand for electronically controlled fuel systems. Each new product has a different power range and cylinder diameter range. If a corresponding high-pressure common rail pipe for testing is designed for the common rail fuel system of each cylinder diameter range or power range, it will have the defects of high cost and long cycle, which will affect the progress of product development and reduce the competitiveness of the product. Utility Model Content

[0003] The utility model aims to provide a high-pressure common rail pipe component for testing, so as to solve the problems of high cost and long cycle in the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A test high-pressure common rail pipe component comprises a common rail pipe, an end cover, a first sealing ring and a second sealing ring. When two common rail pipes are connected by a first mounting component, the ends of the two common rail pipes are fitted together, the first sealing ring is located between the two common rail pipes and is interference-connected with the inner side walls of the two common rail pipes. When the end cover is connected to the common rail pipe by the second mounting component, the end of the end cover is opposite to the end of the common rail pipe. The second sealing ring is located between the end cover and the common rail pipe and is interference-connected with the inner side wall of the end cover and the inner side wall of the common rail pipe.

[0006] Furthermore, the inner side walls at both ends of the common rail pipe are provided with circumferential first sealing ring installation grooves, and when the two common rail pipes are connected, the first sealing ring is located in the space formed by the two first sealing ring installation grooves.

[0007] Furthermore, a circumferential second sealing ring installation groove is provided on the inner side wall of the end cover, and when the end cover is connected to the common rail pipe, the second sealing ring is located in the space formed by the first sealing ring installation groove and the second sealing ring installation groove.

[0008] Furthermore, a rail pipe mounting seat is provided on the common rail pipe, on which the oil inlet and outlet joints, the PCV valve mounting seat, the pressure sensor base and the safety valve can be installed.

[0009] Furthermore, the number of the rail tube mounting seats is at least two, and they are arranged sequentially along the axial direction of the common rail tube.

[0010] Beneficial effects of the utility model:

[0011] The utility model can assemble common rail pipe components of different volumes by arranging the end cover, the first sealing ring and the second sealing ring, and can be used for integration test of electronically controlled fuel systems of different powers and cylinder diameters and high-pressure oil pump subsystem test, thereby improving product development progress, reducing development costs and improving product competitiveness.

[0012] The parts installed on the rail pipe mounting seat of the utility model can adjust the installation position, so that the oil pipe layout is more reasonable, the energy consumption of the test bench is reduced, and the aesthetics of the test bench is improved.

[0013] The utility model can determine the installation quantity of the PCV valve according to system requirements, improve the control accuracy of the rail pressure, reduce the amplitude of rail pressure fluctuation, improve the stability of the rail pressure, and make the measured experimental data more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Among them, 1-end cover; 2-common rail pipe; 3-second sealing ring; 4-first sealing ring; 5-first mounting component; 6-second mounting component; 7-safety valve; 8-plug; 9-inlet and outlet oil joints; 10-pressure sensor base; 11-PCV valve mounting seat; 12-rail pipe mounting seat. DETAILED DESCRIPTION

[0016] The following will refer to the accompanying drawings and preferred embodiments to illustrate the implementation of the technical solution of the utility model. Those skilled in the art can easily understand other advantages and effects of the utility model from the contents disclosed in this specification. The utility model can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the utility model. It should be understood that the preferred embodiments are only for illustrating the utility model, not for limiting the scope of protection of the utility model.

[0017] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0018] This embodiment provides a high-pressure common rail pipe component for testing, including a common rail pipe 2 , an end cover 1 , a first sealing ring 3 and a second sealing ring 4 .

[0019] Firstly, the technical input parameters of the product are calculated and sorted to obtain the single injection volume of the injector. Then, the theoretical common rail volume is calculated according to the rail pipe volume calculation formula: V=kq (V-volume, mm³; k-rail pressure stable volume coefficient; q-single injector cyclic injection volume, mm³ / r), and the appropriate number of common rail pipes are selected2.

[0020] According to the above formula, the present embodiment requires three common rail pipes 2 according to the rail pipe volume, such as Figure 1 As shown, the oil chamber in the common rail pipe 2 is surrounded by the inner wall of the common rail pipe 2, the end cover 1 and the first sealing ring 4. When two common rail pipes 2 are connected, the ends of the common rail pipes 2 are fitted together and then connected through the first mounting component 5.

[0021] The inner side walls of the two ends of the common rail pipe 2 are provided with first sealing ring installation grooves. When the two common rail pipes 2 are connected, the first sealing ring 3 is located in the space formed by the two first sealing ring installation grooves and is interference-connected with the two common rail pipes 2. The first sealing ring 3 in this embodiment fills the space formed by the two first sealing ring installation grooves. After the ends of the two common rail pipes 2 in this embodiment are aligned, a space for placing the first sealing ring 3 can be formed, and the space is composed of two stacked first sealing ring installation grooves.

[0022] The inner side wall of the end of the end cover 1 is provided with a circumferential second sealing ring mounting groove. When connected to the common rail pipe 2, the end of the end cover 1 is fitted and aligned with the end of the common rail pipe 2. At this time, the first sealing ring mounting groove and the second sealing ring mounting groove are stacked, and the second sealing ring 3 is located in the space enclosed by the first sealing ring mounting groove and the second sealing ring mounting groove, and is interference connected with both the end cover 1 and the common rail pipe 2. The end cover 1 and the common rail pipe 2 are connected through the second mounting component 6.

[0023] Therefore, when the three common rail pipes 2 shown in the figure need to be connected, after installing the first sealing ring 4, the ends of two adjacent common rail pipes 2 are aligned, and the two common rail pipes 2 are connected through the first mounting component 5. For the ends of the first and last common rail pipes 2 from top to bottom, the second sealing ring 3 is placed in the space surrounded by the first sealing ring mounting groove and the second sealing ring mounting groove, and then the end cover 1 is aligned with the end of the common rail pipe 2, and finally the end cover 1 is connected to the common rail pipe 2 through the second mounting component 6.

[0024] In the case where only one common rail pipe 1 is required, two end covers 1 are provided, which are respectively installed at both ends of the common rail pipe 1, and a second sealing ring 3 is provided in the space surrounded by the first sealing ring installation groove and the second sealing ring installation groove.

[0025] In this embodiment, at least two rail pipe mounting seats 12 are provided on the common rail pipe. The rail pipe mounting seats 12 are of universal design and can be used to install the oil inlet and outlet joints 9, the PCV valve mounting seat 11, the pressure sensor base 10 and the safety valve 7.

[0026] All rail pipe mounting seats 12 in this embodiment are arranged in sequence along the axial direction of the common rail pipe 2. The positions of the oil outlet joint 9, the PCV valve mounting seat 11, the pressure sensor base 10 and the safety valve 7 can be modified according to the actual test conditions. Taking the oil inlet and outlet joint 9 as an example, there are three rail pipe mounting seats 12, which are arranged in sequence from top to bottom. If the position of the oil inlet and outlet pipe is relatively high, the oil inlet and outlet joint 9 is installed on the higher rail pipe mounting seat 12, and if it is lower, it is installed on the lower oil inlet and outlet joint 9. The unused rail pipe mounting seats 12 are blocked by plugs 8.

[0027] At the same time, the number of PCV valves to be installed can be determined based on system requirements, which improves the control accuracy of rail pressure, reduces the amplitude of rail pressure fluctuations, improves the stability of rail pressure, and makes the measured experimental data more accurate.

[0028] The high-pressure common rail pipe components for testing in this embodiment adopt modular and universal design, and can be assembled into common rail pipe components of different volumes, which can be used for integrated testing of electronic fuel systems with different powers and cylinder diameters and high-pressure oil pump subsystem testing, thereby improving product development progress, reducing development costs, and improving product competitiveness. The various parts installed on the rail pipe mounting seat 12 can adjust the installation position, making the oil pipe layout more reasonable, reducing the energy consumption of the test bench, and improving the aesthetics of the test bench. The PCV valve can determine the installation quantity according to system requirements, improve the control accuracy of the rail pressure, reduce the amplitude of rail pressure fluctuations, improve the stability of the rail pressure, and make the measured experimental data more accurate.

[0029] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or modification made by a person skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. A high-pressure common rail pipe component for testing, characterized in that: It includes a common rail pipe, an end cover, a first sealing ring and a second sealing ring. When the two common rail pipes are connected by a first mounting component, the ends of the two common rail pipes are fitted together. The first sealing ring is located between the two common rail pipes and is interference-connected with the inner side walls of the two common rail pipes. When the end cover is connected to the common rail pipe by the second mounting component, the end of the end cover is opposite to the end of the common rail pipe. The second sealing ring is located between the end cover and the common rail pipe and is interference-connected with the inner side wall of the end cover and the inner side wall of the common rail pipe.

2. The test high pressure common rail pipe component according to claim 1, characterized in that: The inner side walls at both ends of the common rail pipe are provided with a circumferential first sealing ring installation groove. When the two common rail pipes are connected, the first sealing ring is located in the space formed by the two first sealing ring installation grooves.

3. The test high pressure common rail pipe component according to claim 2, characterized in that: The inner side wall of the end cover is provided with a circumferential second sealing ring installation groove. When the end cover is connected to the common rail pipe, the second sealing ring is located in the space formed by the first sealing ring installation groove and the second sealing ring installation groove.

4. The test high pressure common rail pipe component according to claim 1, characterized in that: The common rail pipe is provided with a rail pipe mounting seat, which can be used to install oil inlet and outlet joints, a PCV valve mounting seat, a pressure sensor base and a safety valve.

5. The test high pressure common rail pipe component according to claim 4, characterized in that: The number of the rail tube mounting seats is at least two, and they are arranged in sequence along the axial direction of the common rail tube.

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