Valve seat of methanol fuel injector and methanol fuel injector assembly thereof

Abstract

The utility model discloses a methanol fuel injector valve seat and a methanol fuel injector assembly thereof, the bottom of the valve seat is provided with a cylinder cover connector fixedly connected with a cylinder cover, the side part of the valve seat is provided with a lateral protruding joint protruding along the radial direction, the lateral protruding joint is provided with a methanol inlet pipe mounting hole, and the methanol inlet pipe mounting hole is provided with a methanol inlet pipe. The valve seat is provided with a methanol ejector insertion hole in the axial direction, and the methanol inlet pipe installation hole is communicated with the methanol ejector insertion hole. A double-wall methanol pipe is fixedly mounted in the methanol inlet pipe mounting hole of the valve seat, and the valve seat is detachably and fixedly connected to the cylinder cover. According to the methanol fuel injector, the valve seat of the methanol fuel injector is detachably and fixedly connected with the methanol injector, the functional requirement for lateral methanol feeding of the methanol injector is met, interference between a methanol fuel injector assembly and parts such as an exhaust pipe or a water pipe on an engine is avoided, meanwhile, the methanol fuel injector assembly is convenient to assemble and disassemble, and the cost is reduced. And the overall cost is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of methanol fuel injectors, in particular to a valve seat of a methanol fuel injector and a methanol fuel injector assembly thereof. Background Art

[0002] With the development of science and technology, energy consumption is increasing, the global energy crisis is becoming more and more serious, oil resources are decreasing, and the development of new energy is becoming more and more urgent. Methanol, as a renewable new energy, has become a preferred alternative fuel for diesel and gasoline. It can effectively save the use of original fuel, help reduce the pollution of automobiles to the environment, and reduce the fuel consumption of gasoline users.

[0003] In the prior art, the methanol inlet of the methanol injector is arranged along its axial direction, the methanol inlet is located at the top of the methanol injector, and the methanol nozzle is arranged at the bottom of the methanol injector, usually 180° apart from the methanol inlet. When the top methanol inlet is externally connected to a joint and an alcohol inlet pipe, the axial dimension will be too long. When installed on the cylinder head, it is easy to interfere with components such as the exhaust pipe or water pipe on the engine, making the methanol injector difficult to install. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the utility model is to provide a valve seat of a methanol fuel injector and a methanol fuel injector assembly thereof, which can realize the lateral methanol injection of the methanol injector assembly, avoid interference when the methanol fuel injector assembly is installed on the engine, and facilitate installation and disassembly.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A valve seat for a methanol fuel injector, characterized in that:

[0007] A cylinder head connector fixedly connected to the cylinder head is provided at the bottom of the valve seat, a lateral protruding joint protruding radially is provided at the side of the valve seat, an alcohol inlet pipe mounting hole is provided at the lateral protruding joint, a methanol injector insertion hole is provided axially on the valve seat, and the alcohol inlet pipe mounting hole is communicated with the methanol injector insertion hole.

[0008] Preferably, a threaded hole for mounting a methanol fuel injector is provided on the valve seat.

[0009] Preferably, a valve seat mounting threaded hole is provided on the valve seat, and the valve seat mounting threaded hole is a through hole.

[0010] Preferably, a sealing ring mounting groove is provided on the outer peripheral wall of the cylinder head connecting head.

[0011] Preferably, an avoidance groove is provided on the peripheral surface of the valve seat.

[0012] A methanol fuel injector assembly includes a methanol fuel injector, characterized in that: the methanol fuel injector is fixedly connected to the valve seat of the methanol fuel injector, the methanol inlet pipe mounting hole of the valve seat is fixedly mounted with a double-wall methanol pipe, and the valve seat is detachably fixedly connected to the cylinder head.

[0013] Preferably: the double-walled methanol pipe is fixedly connected to the alcohol inlet pipe mounting hole via a connecting joint, the double-walled methanol pipe is plugged and fixed to the connecting joint, and the connecting joint is plugged and fixed to the alcohol inlet pipe mounting hole.

[0014] Preferably: an O-ring is installed between the double-wall methanol pipe and the connecting joint, and an O-ring is installed between the connecting joint and the mounting hole of the alcohol inlet pipe.

[0015] Preferably, the valve seat is fixedly connected to the cylinder cover by screws.

[0016] Preferably, a valve seat mounting hole is provided on the cylinder head, the cylinder head connector of the valve seat is plugged and fixed in the valve seat mounting hole, and an O-ring is installed between the cylinder head connector and the valve seat mounting hole.

[0017] After adopting the above technical solution, the beneficial effects of the utility model are:

[0018] The valve seat of the methanol fuel injector of the utility model has a side portion of the valve seat provided with a lateral protruding joint protruding in the radial direction, an alcohol inlet pipe mounting hole is provided at the lateral protruding joint, and a methanol injector insertion hole is provided in the valve seat along the axial direction, and the alcohol inlet pipe mounting hole is communicated with the methanol injector insertion hole. The valve seat of the methanol fuel injector is detachably fixedly connected to the methanol injector, which not only realizes the functional requirement of the methanol injector to feed methanol from the side, but also the methanol fuel injector assembly avoids interference with components such as the exhaust pipe or water pipe on the engine, is convenient for installation and disassembly, and reduces the overall cost of the methanol fuel injector assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the valve seat of the methanol fuel injector of the utility model;

[0020] Figure 2 yes Figure 1 Schematic cross-sectional view at AA in the middle;

[0021] Figure 3 This is a three-dimensional structural diagram of the methanol fuel injector assembly:

[0022] Figure 4 yes Figure 1 Schematic diagram of the methanol fuel injector assembly installed on the cylinder head;

[0023] 1. Valve seat; 101. Cylinder head connector; 1011. Sealing ring mounting groove; 102. Lateral protruding joint; 103. Methanol inlet pipe mounting hole; 104. Methanol injector insertion hole; 105. Methanol fuel injector mounting threaded hole; 106. Valve seat mounting threaded hole; 107. Avoidance groove; 2. Methanol fuel injector; 3. First screw; 4. Second screw; 5. Cylinder head; 501. Valve seat mounting hole; 6. Double-wall methanol pipe; 7. Connecting joint; B. Methanol fuel injector assembly; C. O-ring. DETAILED DESCRIPTION

[0024] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the utility model, but it is not intended to limit the scope of protection of the claims attached to the utility model.

[0025] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0026] In addition, although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0027] The utility model discloses some embodiments, such as Figure 1 , Figure 2 and Figure 4 The valve seat of the methanol fuel injector shown in common has a cylinder head connector 101 fixedly connected to the cylinder head 5 at the bottom of the valve seat 1, a lateral protruding joint 102 protruding radially is provided on the side of the valve seat 1, an alcohol inlet pipe mounting hole 103 is provided at the lateral protruding joint 102, and a methanol injector insertion hole 104 is axially provided on the valve seat 1, and the alcohol inlet pipe mounting hole 103 is communicated with the methanol injector insertion hole 104.

[0028] By adjusting the aperture size of the methanol injector insertion hole 104, methanol injectors of different structural sizes can be accommodated.

[0029] In some embodiments, Figure 3 and Figure 4 As shown, the methanol fuel injector 2 is fixedly connected to the valve seat 1 by a first screw 3 . A methanol fuel injector mounting threaded hole 105 is provided on the valve seat 1 . The first screw 3 is installed in the methanol fuel injector mounting threaded hole 105 .

[0030] In some embodiments, Figure 3 and Figure 4 As shown, the valve seat 1 of the methanol fuel injector is fixedly connected to the cylinder head 5 by a second screw 4 , a valve seat mounting threaded hole 106 is provided on the valve seat 1 , the valve seat mounting threaded hole 106 is a through hole, and the second screw 4 is installed in the valve seat mounting threaded hole 106 .

[0031] In some embodiments, a sealing ring installation groove 1011 is opened on the outer peripheral wall of the cylinder head connector 101 .

[0032] In some embodiments, an avoidance groove 107 is provided on the circumferential surface of the valve seat 1 , and the avoidance groove 107 can prevent the valve seat from interfering with other mounting parts on the cylinder head 5 .

[0033] The embodiment of the utility model discloses a methanol fuel injector assembly B, including a methanol fuel injector 2, wherein the methanol fuel injector 2 is fixedly connected to the valve seat 1 of the methanol fuel injector. The methanol fuel injector 2 is preferably fixedly connected to the valve seat 1 by a first screw 3, so as to facilitate the fixed installation of the methanol fuel injector 2 and the valve seat 1, and facilitate the later disassembly, assembly, maintenance or replacement. The alcohol inlet pipe mounting hole 103 of the valve seat 1 is fixedly installed with a double-wall methanol pipe 6, and the valve seat 1 is detachably fixedly connected to the cylinder head 5, that is, the cylinder head connector 101 of the valve seat 1 is plugged and fixed to the cylinder head 5, and the valve seat 1 and the cylinder head 5 are fixedly connected together by a second screw 4. Preferably, the valve seat 1 and the cylinder head 5 are fixed by three second screws 4, and the methanol fuel injector is in communication with the intake passage of the cylinder head, and the valve seat 1 and the cylinder head 5 are fixedly installed by screws, so that the connection is reliable and the disassembly and assembly are convenient.

[0034] The double-walled methanol pipe 6 is fixedly connected to the alcohol inlet pipe mounting hole 103 through the connecting joint 7, and the double-walled methanol pipe 6 is plugged and fixed to the connecting joint 7, and the connecting joint 7 is plugged and fixed to the alcohol inlet pipe mounting hole 103. The top alcohol inlet method in the prior art is changed to a side alcohol inlet method, that is, the inlet of the methanol fuel injector 2 is set on the side through the valve seat 1 of the methanol fuel injector, and the methanol is smoothly introduced into the inlet area of ​​the methanol injector through the double-walled methanol pipe 6 connected to the side.

[0035] In order to improve the sealing performance and prevent methanol leakage, an O-ring C is installed between the double-wall methanol pipe 6 and the connecting joint 7. An O-ring C is installed between the connecting joint 7 and the mounting hole 103 of the methanol inlet pipe.

[0036] A valve seat mounting hole 501 is provided on the cylinder head 5, and the cylinder head connector 101 of the valve seat 1 is inserted and fixed in the valve seat mounting hole 501. In order to improve the sealing performance and prevent methanol leakage, an O-ring C is installed between the cylinder head connector 101 and the valve seat mounting hole 501.

[0037] In some embodiments, to ensure sealing so that methanol fuel does not leak out, the valve seat 1 is made of austenitic stainless steel, and the sealing parts such as O-rings are made of fluororubber (with a fluorine content greater than 70%).

[0038] The valve seat of the methanol fuel injector of the utility model is detachably fixedly connected to the methanol injector, which not only realizes the functional requirement of lateral methanol injection of the methanol injector, but also avoids interference between the methanol fuel injector assembly and components such as the exhaust pipe or water pipe on the engine, while facilitating installation and disassembly and reducing the overall cost.

[0039] The present invention is not limited to the above embodiments, and all improvements made based on the concept, principle, structure and method of the present invention are within the protection scope of the present invention.

Claims

1. A valve seat for a methanol fuel injector, characterized in that: A cylinder head connector fixedly connected to the cylinder head is provided at the bottom of the valve seat, a lateral protruding joint protruding radially is provided at the side of the valve seat, an alcohol inlet pipe mounting hole is provided at the lateral protruding joint, a methanol injector insertion hole is provided axially on the valve seat, and the alcohol inlet pipe mounting hole is communicated with the methanol injector insertion hole.

2. The valve seat of the methanol fuel injector according to claim 1, characterized in that: The valve seat is provided with a methanol fuel injector mounting threaded hole.

3. The valve seat of the methanol fuel injector according to claim 2, characterized in that: The valve seat is provided with a valve seat mounting threaded hole, and the valve seat mounting threaded hole is a through hole.

4. The valve seat of the methanol fuel injector according to claim 1, characterized in that: A sealing ring installation groove is provided on the outer peripheral wall of the cylinder cover connecting head.

5. The valve seat of the methanol fuel injector according to claim 1, characterized in that: An avoidance groove is arranged on the peripheral surface of the valve seat.

6. A methanol fuel injector assembly, comprising a methanol fuel injector, characterized in that: The methanol fuel injector is fixedly connected to the valve seat of the methanol fuel injector described in claim 1, the methanol inlet pipe mounting hole of the valve seat is fixedly mounted with a double-wall methanol pipe, and the valve seat is detachably fixedly connected to the cylinder head.

7. The methanol fuel injector assembly according to claim 6, characterized in that: The double-walled methanol pipe is fixedly connected to the alcohol inlet pipe mounting hole via a connecting joint, the double-walled methanol pipe is plugged and fixed to the connecting joint, and the connecting joint is plugged and fixed to the alcohol inlet pipe mounting hole.

8. The methanol fuel injector assembly according to claim 7, characterized in that: An O-ring is installed between the double-wall methanol pipe and the connecting joint, and an O-ring is installed between the connecting joint and the mounting hole of the methanol inlet pipe.

9. The methanol fuel injector assembly according to claim 6, characterized in that: The valve seat is fixedly connected to the cylinder cover by screws.

10. The methanol fuel injector assembly according to claim 6, characterized in that: A valve seat mounting hole is provided on the cylinder cover, the cylinder cover connector of the valve seat is plugged and fixed in the valve seat mounting hole, and an O-ring is installed between the cylinder cover connector and the valve seat mounting hole.

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