Gas ejector, engine and vehicle

Abstract

The utility model belongs to the technical field of vehicles, and discloses a gas ejector, an engine and a vehicle, the gas ejector comprises a shell, a valve body, an electromagnet, a control valve seat, an armature and an adjusting assembly, the shell is provided with a gas outlet, the valve body is arranged in the shell, the electromagnet is arranged at one end of the shell far away from the gas outlet, and the electromagnet is provided with a through hole; the control valve seat penetrates through the valve body and the through hole in a sliding mode, the armature is arranged on the control valve seat, and the armature can be magnetically attracted to the electromagnet so that the control valve seat can open the air outlet and achieve air injection, the adjusting assembly comprises an adjusting piece and a fixing piece, and the adjusting piece is detachably connected to the control valve seat and located in the through hole in the axis direction of the control valve seat. The adjusting part is arranged in a protruding mode relative to the electromagnet so that a residual gap can be formed between the electromagnet and the armature, the fixing part is arranged on the control valve seat and abuts against the adjusting part, the residual gap can be recovered and gap adjustment can be conducted by replacing the adjusting parts of different heights and sizes, and the maintenance cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially relates to gas injector, engine and vehicle. BACKGROUND

[0002] The working principle of the gas injector is that the suction force generated by the energization of the electromagnet is used to adsorb the armature, and then drive the control valve seat to be lifted upward, so as to open the flow channel, and the gas injection enters the ejector.

[0003] The initial assembly of the residual gap between the electromagnet and the armature meets the design requirements, with the accumulation of the working time of the gas injector, the internal parts produce impact wear, so that the residual gap gradually becomes 0, until the armature is impacted, thereby affecting the service life of the gas injector. The traditional solution is to replace all internal parts, but the maintenance cost is high.

[0004] Therefore, there is an urgent need for a gas injector, an engine and a vehicle to solve the above problems. SUMMARY

[0005] According to one aspect of the utility model, the gas injector is provided, and the replacement of the adjusting part can restore and adjust the residual gap, and the maintenance cost is low.

[0006] In order to solve the above problems existing in the prior art, the utility model adopts the following technical scheme:

[0007] The gas injector comprises:

[0008] The shell has a gas outlet;

[0009] The valve body is arranged in the shell;

[0010] The electromagnet is arranged at one end of the shell away from the gas outlet, and the electromagnet is provided with a through hole;

[0011] The control valve seat is slidably arranged in the valve body and the through hole;

[0012] The armature is arranged on the control valve seat, and the armature can be magnetically adsorbed with the electromagnet, so that the control valve seat opens the gas outlet;

[0013] The adjusting assembly comprises an adjusting part and a fixing part, the adjusting part is detachably connected to the control valve seat and located in the through hole, along the axis direction of the control valve seat, the adjusting part is arranged protruding relative to the electromagnet, so that the electromagnet and the armature have a residual gap, and the fixing part is arranged on the control valve seat and abuts against the adjusting part.

[0014] Preferably, the number of the adjusting pieces is multiple, and the multiple adjusting pieces are arranged in sequence along the axial direction of the control valve seat.

[0015] Preferably, the fixing piece has a mounting groove and an opening, and the control valve seat passes through the opening and abuts against the mounting groove.

[0016] Preferably, the spacing of the openings is less than the width of the mounting groove.

[0017] Preferably, the fixing piece is a clamping spring.

[0018] Preferably, the gas injector further comprises a first elastic piece, the first elastic piece is annularly arranged on the control valve seat, and two ends of the first elastic piece are connected to the valve body and the armature respectively.

[0019] Preferably, the gas injector further comprises an end cover and a second elastic piece, the end cover is arranged on one end of the shell close to the electromagnet, the second elastic piece is located in the through hole, and two ends of the second elastic piece are connected to the end of the control valve seat and the end cover respectively.

[0020] Preferably, the gas injector further comprises a gasket, the gasket is arranged between the second elastic piece and the control valve seat.

[0021] According to another aspect of the utility model, an engine is provided, comprising an engine body and the above-mentioned gas injector, the engine body has an air inlet pipeline, and the gas injector is mounted on the air inlet pipeline.

[0022] According to still another aspect of the utility model, a vehicle is provided, comprising a vehicle body and the above-mentioned engine, and the engine is arranged on the vehicle body.

[0023] The utility model has the advantages of:

[0024] The gas injector provided by this utility model has an outlet in its outer shell, a valve body disposed inside the outer shell, and an electromagnet disposed at the end of the outer shell away from the outlet. The electromagnet has a through hole, and a control valve seat slides through the valve body and the through hole. An armature is disposed on the control valve seat, and the armature can be magnetically attracted to the electromagnet, thereby opening the outlet. When the gas injector is energized, the electromagnet attracts the armature and moves it upward, causing the control valve seat to lift upward, thus opening the outlet and realizing gas injection. When the gas injector is de-energized, there is no attraction between the electromagnet and the armature, the armature moves downward, and causes the control valve seat to fall downward, thereby closing the outlet and preventing gas injection. The adjustment component includes an adjusting member and a fixing member. The adjusting member is detachably connected to the control valve seat and located in the through hole. Along the axial direction of the control valve seat, the adjusting member protrudes relative to the electromagnet to provide a remaining gap between the electromagnet and the armature. The fixing member is disposed on the control valve seat and abuts against the adjusting member. As the gas injector operates for a long time, the internal components collide and wear continuously until the remaining gap becomes zero. Removing the electromagnet, pulling out the fixing part, and replacing the adjusting part with one of different height dimensions can restore the remaining gap and adjust the gap, resulting in low maintenance costs.

[0025] The engine provided by this utility model includes an engine body and a gas injector. The engine body has an intake pipe, and the gas injector is installed in the intake pipe. As one of the core components of the engine body, the intake pipe is typically integrated into the cylinder head and is responsible for delivering external air or a mixture to the main combustion chamber. The intake pipe extends along the cylinder head axis and communicates with the main combustion chamber through an intake valve. An adjusting component is detachably connected to the control valve seat; replacing the adjusting component with one of different heights allows for the restoration of the remaining clearance and adjustment of the clearance, resulting in low engine maintenance costs.

[0026] The vehicle provided by this utility model includes a vehicle body and an engine, with the engine mounted on the vehicle body. An intake manifold is installed on the engine cylinder head, and a gas injector is fixed to the intake manifold, typically near the upstream of the intake valve. When the engine requires gaseous fuel, it is in the intake stroke. The gas injector is energized, and the electromagnet attracts the armature, causing it to move upwards and lifting the control valve seat, thus opening the outlet and injecting gas. Then, in the compression stroke, the gas injector is de-energized, the electromagnet and armature no longer attract each other, the armature moves downwards, and the control valve seat falls downwards, closing the outlet. As the gas injector operates over time, the internal components impact each other, and wear increases until the remaining clearance becomes zero. The adjusting component is detachably connected to the control valve seat. By removing the electromagnet, pulling out the fixing component, and replacing the adjusting component with one of different heights, the remaining clearance can be restored and the clearance adjusted. This results in low vehicle maintenance costs. Attached Figure Description

[0027] Figure 1The sectional view of the gas injector is provided for the embodiment of the utility model.

[0028] Figure 2 The structure schematic view of the fixing part is provided for the embodiment of the utility model.

[0029] Figure 3 The installation schematic view of the adjusting part in the stuck position and the dismounting position of the control valve seat is provided for the embodiment of the utility model.

[0030] Reference signs:

[0031] 1, shell; 2, gas outlet; 3, valve body; 4, electromagnet; 5, through hole; 6, control valve seat; 7, armature; 8, adjusting part; 9, fixing part; 10, mounting groove; 11, opening; 12, first elastic part; 13, second elastic part; 14, gasket. DETAILED DESCRIPTION

[0032] The utility model will be further explained in detail in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not limited to the utility model. In addition, it should be noted that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all the structures.

[0033] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] In the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] like Figures 1-3 As shown, in this embodiment, the gas injector includes a housing 1, a valve body 3, an electromagnet 4, a control valve seat 6, an armature 7, and an adjustment assembly. The housing 1 has an outlet 2. The valve body 3 is disposed within the housing 1. The electromagnet 4 is disposed at the end of the housing 1 furthest from the outlet 2 and has a through hole 5. The control valve seat 6 slides through the valve body 3 and the through hole 5. The armature 7 is disposed on the control valve seat 6 and can be magnetically attracted to the electromagnet 4, thereby opening the outlet 2 of the control valve seat 6. The adjustment assembly includes an adjusting member 8 and a fixing member 9. The adjusting member 8 is detachably connected to the control valve seat 6 and located within the through hole 5. Along the axial direction of the control valve seat 6, the adjusting member 8 protrudes relative to the electromagnet 4, leaving a gap between the electromagnet 4 and the armature 7. The fixing member 9 is disposed on the control valve seat 6 and abuts against the adjusting member 8.

[0037] Specifically, the shell 1 has a containing cavity, the valve body 3 is arranged in the containing cavity of the shell 1, the electromagnet 4 is located above the valve body 3 and arranged in the containing cavity of the shell 1, and a through hole 5 is arranged at the center of the electromagnet 4. The control valve seat 6 is sequentially arranged in the center hole of the valve body 3 and the through hole 5 of the electromagnet 4 and simultaneously slides relative to the valve body 3 and the electromagnet 4, and the control valve seat 6 is used for opening or blocking the gas outlet 2. The armature 7 is located between the electromagnet 4 and the valve body 3, and the armature 7 is fixedly sleeved on the control valve seat 6. When the gas injector is powered on, the electromagnet 4 attracts the armature 7 to move upward, and drives the control valve seat 6 to lift upward, so that the gas outlet 2 is opened, and gas injection is realized. When the gas injector is powered off, the electromagnet 4 and the armature 7 do not have an attraction effect, the armature 7 moves downward, and drives the control valve seat 6 to fall downward, so that the gas outlet 2 is closed, and gas cannot be injected. The adjusting piece 8 is arranged as an adjusting piece, the fixing piece 9 is arranged as a clamping spring, the adjusting piece 8 is arranged in the through hole 5 above the armature 7 and sleeved on the control valve seat 6, the fixing piece 9 is arranged in the through hole 5 above the adjusting piece 8 and sleeved on the control valve seat 6, the fixing piece 9 is used for clamping the adjusting piece 8, and the lower end surface of the adjusting piece 8 is arranged protruding relative to the bottom surface of the electromagnet 4, so that the electromagnet 4 and the armature 7 have a residual gap. With the accumulation of the working time of the gas injector, the parts inside the shell 1 collide and the wear increases continuously, until the residual gap becomes 0, the armature 7 directly collides with the electromagnet 4, and the service life of the gas injector is affected. The adjusting piece 8 and the control valve seat 6 are detachably connected, when the residual gap is 0, the electromagnet 4 is taken out, the fixing piece 9 is pulled out, and the adjusting piece 8 with different height sizes is replaced, so that the residual gap can be restored and adjusted, and the maintenance cost is low.

[0038] Further, referring to Figure 1 and Figure 3 , the number of adjusting pieces 8 is multiple, and the multiple adjusting pieces 8 are sequentially and laminatedly arranged on the control valve seat 6 along the axial direction of the control valve seat 6. Specifically, when the multiple adjusting pieces 8 are all standard pieces, that is, the size specifications of the different adjusting pieces 8 are all the same, the multiple adjusting pieces 8 are laminatedly arranged on the control valve seat 6, and the lower end surface of the lowermost adjusting piece 8 protrudes more relative to the bottom surface of the electromagnet 4, so as to increase the residual gap, so as to meet the demand of different residual gaps.

[0039] Further, referring to Figure 1 and Figure 2 , the fixing piece 9 has a mounting groove 10 and an opening 11, and the control valve seat 6 passes through the opening 11 and abuts against the mounting groove 10. Specifically, the fixing piece 9 is arranged as a clamping spring, the distance between the openings 11 is less than the width of the mounting groove 10, the fixing piece 9 is sleeved on the control valve seat 6 by deforming the openings 11, that is, the outer circumferential surface of the control valve seat 6 abuts against the inner side wall of the mounting groove 10, so as to facilitate disassembly and assembly.

[0040] Further, referring to Figure 1, the gas injector further comprises a first elastic member 12, the first elastic member 12 is annularly arranged on the control valve seat 6, and two ends of the first elastic member 12 are connected to the valve body 3 and the armature 7 respectively. Specifically, the first elastic member 12 is arranged as a supporting spring in a compressed state, the first elastic member 12 upwardly presses the fixing member 9 tightly, and the dismounting process of the fixing member 9 is as follows: the electromagnet 4 is removed, the armature 7 is moved downwardly, the first elastic member 12 is compressed downwardly, and the fixing member 9 is lowered along with the armature 7, and the fixing member 9 is lowered to a dismounting position and then removed.

[0041] Further, continuing to refer to Figure 1 , the gas injector further comprises a gasket 14, an end cover and a second elastic member 13, the end cover is arranged at one end of the shell 1 close to the electromagnet 4, the second elastic member 13 is located in the through hole 5, two ends of the second elastic member 13 are connected to the end of the control valve seat 6 and the end cover respectively, and the gasket 14 is arranged between the second elastic member 13 and the control valve seat 6. Specifically, the second elastic member 13 is arranged as a return spring, when the gas injector is powered off, under the elastic action of the second elastic member 13 and the demagnetization of the electromagnet 4, the armature 7 loses the adsorption of the electromagnet 4, the armature 7 moves downwardly, and the control valve seat 6 is lowered downwardly, so that the gas outlet 2 is closed.

[0042] The embodiment further provides an engine, comprising an engine body and a gas injector, the engine body has an air inlet pipeline, and the gas injector is mounted on the air inlet pipeline. Specifically, the engine body is composed of a cylinder body, a cylinder cover and a piston, a main combustion chamber is formed by the piston top, the cylinder cover and the cylinder body, the air inlet pipeline is one of core components of the engine body, is usually integrated on the cylinder cover, is responsible for conveying external air or mixed gas to the main combustion chamber, the air inlet pipeline extends along the cylinder cover axis and is communicated with the main combustion chamber through an inlet valve. A standardized flange or threaded interface is arranged on the outside of the air inlet pipeline, is used for fixing the gas injector and ensuring the sealing, and is usually arranged close to the upstream of the inlet valve to realize sufficient premixing of fuel and air. The adjusting member 8 is detachably connected to the control valve seat 6, when the residual gap is 0, the electromagnet 4 is removed, the fixing member 9 is pulled out, and the adjusting member 8 with different height sizes is replaced to restore the residual gap and adjust the gap, so that the maintenance cost of the engine is low.

[0043] The embodiment also provides a vehicle, comprising a vehicle body and an engine arranged on the vehicle body. Specifically, an air intake pipe is arranged on a cylinder head of the engine, and a gas injector is fixed on the air intake pipe, generally close to an air inlet valve. When the engine needs gas fuel, the engine is in an air intake stroke, the gas injector is powered on, the electromagnet 4 absorbs the armature 7 to move upward, and the control valve seat 6 is lifted upward to open the gas outlet 2, so that the gas injection is realized. Then, the engine is in a compression stroke, the gas injector is powered off, the electromagnet 4 does not have the absorption effect between the armature 7, the armature 7 moves downward, and the control valve seat 6 falls downward, so that the gas outlet 2 is closed. With the accumulation of the working time of the gas injector, the impact between the components in the shell 1 and the increasing wear are generated, until the remaining gap becomes 0, the adjusting part 8 is detachably connected with the control valve seat 6, the electromagnet 4 is taken out, the fixing part 9 is pulled out, the adjusting part 8 with different height sizes is replaced, the remaining gap can be restored and the gap adjustment can be performed, and the maintenance cost of the vehicle is low.

[0044] Obviously, the above embodiment of the utility model is only for clear illustration of the utility model, and is not a limitation on the implementation mode of the utility model. For ordinary skilled persons in the art, various obvious changes, readjustment and replacement can be made without departing from the protection scope of the utility model. Here, all the implementation modes cannot be exhausted. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A gas injector, characterized in that, include: The outer casing (1) has an air outlet (2); The valve body (3) is disposed inside the outer casing (1); An electromagnet (4) is disposed at one end of the outer casing (1) away from the air outlet (2), and the electromagnet (4) has a through hole (5); The control valve seat (6) is slidably disposed in the valve body (3) and the through hole (5); An armature (7) is disposed on the control valve seat (6). The armature (7) can be magnetically attracted to the electromagnet (4) so ​​that the control valve seat (6) opens the air outlet (2). The adjustment assembly includes an adjustment member (8) and a fixing member (9). The adjustment member (8) is detachably connected to the control valve seat (6) and located in the through hole (5). Along the axial direction of the control valve seat (6), the adjustment member (8) protrudes relative to the electromagnet (4) so ​​that there is a remaining gap between the electromagnet (4) and the armature (7). The fixing member (9) is disposed on the control valve seat (6) and abuts against the adjustment member (8).

2. The gas injector according to claim 1, characterized in that, There are multiple adjusting members (8), and multiple adjusting members (8) are stacked sequentially on the control valve seat (6) along the axial direction of the control valve seat (6).

3. The gas injector according to claim 1, characterized in that, The fastener (9) has a mounting groove (10) and an opening (11), and the control valve seat (6) passes through the opening (11) and abuts against the mounting groove (10).

4. The gas injector according to claim 3, characterized in that, The spacing of the openings (11) is less than the width of the mounting groove (10).

5. The gas injector according to claim 1, characterized in that, The fastener (9) is a retaining ring.

6. The gas injector according to claim 1, characterized in that, The gas injector also includes a first elastic element (12), which is arranged around the control valve seat (6), and the two ends of the first elastic element (12) are respectively connected to the valve body (3) and the armature (7).

7. The gas injector according to claim 1, characterized in that, The gas injector also includes an end cap and a second elastic element (13). The end cap is disposed at one end of the housing (1) near the electromagnet (4). The second elastic element (13) is located inside the through hole (5). The two ends of the second elastic element (13) are respectively connected to the end of the control valve seat (6) and the end cap.

8. The gas injector according to claim 7, characterized in that, The gas injector also includes a gasket (14) disposed between the second elastic member (13) and the control valve seat (6).

9. An engine, characterized in that, The invention includes an engine body and a gas injector as described in any one of claims 1-8, wherein the engine body has an intake pipe and the gas injector is mounted on the intake pipe.

10. A vehicle, characterized in that, It includes a vehicle body and the engine as described in claim 9, wherein the engine is disposed on the vehicle body.

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