CN116838503A

CN116838503A - Injector and vehicle

Info

Publication number: CN116838503A
Application number: CN202310932775.1A
Authority: CN
Inventors: 唐继响; 周庭波; 胡猛; 高晶晶; 王红磊
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2023-10-03

Abstract

The present application relates to an injector and a vehicle. The air inlet channel penetrates through the shell along the first direction; the connecting component and the shell are surrounded to form an installation space, and the installation space is communicated with the air inlet channel; the air inlet assembly comprises a sealing seat and a moving part which are arranged in the installation space, and the moving part is arranged between the sealing seat and the shell; the air injection assembly comprises an air outlet channel which is communicated with the installation space; the moving member includes a first position and a second position, the first position being closer to the intake passage than the second position; when the moving piece is positioned at the first position, the air inlet channel is isolated from the air outlet channel; when the moving part is positioned at the second position, the air inlet channel and the air outlet channel are communicated. The application realizes the opening and closing control of the second channel through the reciprocating movement of the moving part so as to control the on-off of the gas channel, and has simple structure and low manufacturing difficulty.

Description

Injector and vehicle

Technical Field

The application relates to the technical field of automobile power devices, in particular to an ejector and a vehicle.

Background

The emission pollution of the traditional fuel automobile is a main source of urban pollution, and the utilization of the clean fuel automobile to replace the traditional fuel automobile is one of the important means for reducing the urban pollution. The in-cylinder gas direct injection automobile is one of clean fuel automobiles, and compared with the traditional fuel automobiles, the emission pollution is greatly reduced.

The gas in-cylinder direct injection injector is a key component of an in-cylinder gas direct injection automobile power device, and is used for directly injecting gas fuel into a combustion chamber in the running process of an automobile, and carrying out injection timing and injection metering on the fuel injection in the injection process so as to assist the gas fuel to be mixed with air.

However, the conventional direct injection injector in a gas cylinder is complicated in structure and difficult in technology.

Disclosure of Invention

Based on the above, it is necessary to provide an injector and a vehicle aiming at the problems of complex structure and great technical difficulty of the conventional direct injection injector in a gas cylinder.

In a first aspect, the present application provides an injector, which adopts the following technical scheme:

the ejector comprises a shell, a connecting assembly, an air inlet assembly and an air injection assembly, wherein the shell is arranged in an extending mode along a first direction, an air inlet channel is formed in the shell, and the air inlet channel penetrates through the shell along the first direction; the connecting component is connected to the shell, an installation space is formed by surrounding the connecting component and the shell, and the installation space is communicated with the air inlet channel; the air inlet assembly comprises a sealing seat and a moving part which are arranged in the installation space, and the moving part is arranged between the sealing seat and the shell; the air injection assembly is connected to the shell by means of the connecting assembly, and comprises an air outlet channel which is communicated with the installation space; wherein the moving member includes a first position and a second position, the first position being closer to the intake passage than the second position; when the moving piece is positioned at the first position, the moving piece is abutted with the sealing seat, and the air inlet channel and the air outlet channel are isolated; when the moving part is located at the second position, the moving part is separated from the sealing seat, and the air inlet channel and the air outlet channel are communicated.

In one embodiment, the moving member has a first channel, the first channel is communicated with the air inlet channel, a second channel is defined between one side of the moving member facing away from the air inlet channel and the inner wall of the sealing seat and the mounting space, when the moving member is located at the first position, the second channel is isolated from the air inlet channel, when the moving member is located at the second position, the second channel can be communicated with the first channel, and the sealing seat has a third channel, and the third channel can be communicated with the second channel.

In one embodiment, the installation space includes a first accommodation groove having a size larger than that of the intake passage in a second direction perpendicular to the first direction; the air inlet assembly further comprises a coil part and an elastic piece, wherein the elastic piece is arranged in the first accommodating groove, the elastic piece is abutted between the groove wall of the first accommodating groove and the moving piece, the elastic piece is configured to stretch and retract along the first direction, and the coil part is sleeved outside the moving piece.

In one embodiment, the housing has a second accommodating groove extending along the first direction, and the moving member is movably arranged in the second accommodating groove along the first direction; the air inlet assembly further comprises a protrusion and a deformation piece, wherein the protrusion is arranged on one side of the movable piece, close to the elastic piece, the deformation piece is connected with the movable piece, the deformation piece protrudes towards the elastic piece in the first direction and exceeds the protrusion, and the deformation pieces are configured to stretch and retract along the first direction.

In one embodiment, the air injection assembly includes a valve body and a needle valve extending along the first direction, the air outlet channel penetrates through the valve body along the first direction, and the needle valve is movably arranged in the air outlet channel along the first direction.

In one embodiment, the air injection assembly further comprises a guide member arranged in the air outlet channel, the guide member comprises a guide channel and at least one flow passage, the guide channel and all the flow passages penetrate through the guide member along the first direction respectively, the guide channel and the flow passage are arranged at intervals in the second direction, and the needle valve can penetrate through the guide member through the guide channel.

In one embodiment, the needle valve has a first end and a second end disposed opposite in the first direction, the second end being closer to the housing than the first end; the jet assembly further comprises a sealing member provided at the first end, the sealing member gradually decreasing in size in the second direction from the first end to the second end; when the moving member is located at the first position, the sealing member seals the air outlet channel; when the moving part is positioned at the second position, the sealing part enables the air outlet channel to be communicated.

In one embodiment, a mounting groove is formed in one end, close to the second end, of the valve body, and in the second direction, the size of the mounting groove is larger than that of the air outlet channel; the jet assembly further comprises a reset piece, a fixing seat and a locking piece which are arranged in the mounting groove, the fixing seat is fixed on the needle valve by means of the locking piece, the reset piece, the fixing seat and the locking piece are respectively sleeved at the second end along the first direction in sequence, the reset piece is abutted between the groove wall of the mounting groove and the fixing seat, and the reset piece is configured to stretch and retract along the first direction.

In one embodiment, the connecting assembly comprises a connecting piece and a fastening piece, the connecting piece is arranged between the valve body and the shell, two ends of the connecting piece in the first direction are respectively abutted to the valve body and the shell, the fastening piece is sleeved on the valve body, the connecting piece and the coil part along the first direction, the fastening piece is connected to the shell, and the installation space is defined among the connecting piece, the fastening piece and the shell.

In a second aspect, the present application provides a vehicle, which adopts the following technical scheme:

a vehicle comprises the injector.

The ejector reciprocates between the sealing seat and the shell along the first direction through the moving part, so that the opening and closing of the second channel are controlled, the purpose of controlling the on-off of the air passage in the shell is achieved, the whole structure is simple, and the manufacturing difficulty is low.

Drawings

Fig. 1 is a cross-sectional view of an injector of the present application.

FIG. 2 is a schematic diagram of a gas flow channel according to an embodiment of the application.

FIG. 3 is a cross-sectional view of an air intake assembly according to an embodiment of the present application.

Fig. 4 is a cross-sectional view of a valve body in an embodiment of the application.

FIG. 5 is a schematic view of a needle valve in an embodiment of the application.

Fig. 6 is a schematic view of a fixing base according to an embodiment of the application.

The drawings are marked with the following description:

1. a housing; 11. an air intake passage; 12. a first accommodation groove; 13. a second accommodation groove; 3. a connection assembly; 31. a connecting piece; 32. a fastener; 4. an air intake assembly; 41. a sealing seat; 411. a third channel; 42. a moving member; 421. a first channel; 4211. a first vent hole; 4212. a second vent hole; 43. an elastic member; 44. a protrusion; 45. a deforming member; 46. sealing the filler; 47. a convex ring; 48. adjusting the gasket; 49. a coil section; 5. a jet assembly; 51. a valve body; 511. an air outlet channel; 512. a second abutment surface; 513. a mounting groove; 52. a needle valve; 53. a guide member; 531. a guide channel; 532. a flow-through channel; 54. a seal; 541. a first abutment surface; 55. a reset member; 56. a fixing seat; 561. a through hole; 57. a locking member; 58. a stepped shaft; 6. and a second channel.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment. The "first direction" may be an axial direction of the housing and the "second direction" may be a radial direction of the housing.

Embodiments of the present application are described in further detail below with reference to FIGS. 1-6.

Referring to fig. 1 and 2, an injector, in particular a gas direct injection injector, is used in a hydrogen engine to provide hydrogen gas supply to the engine in an embodiment of the present application.

The injector comprises a housing 1, a coil part 49, a connecting assembly 3, an air inlet assembly 4 and an air injection assembly 5, wherein the air injection assembly 5, the air inlet assembly 4 and the housing 1 are sequentially arranged along a first direction.

The connection assembly 3 includes a connection member 31 and a fastener 32. The connecting piece 31 adopts a ring structure and is sleeved on the shell 1. The fastener 32 adopts a barrel-shaped structure and is sleeved on the connecting piece 31, the fastener 32 and the shell 1 can be fixed in a welding mode, and the fastener 32, the connecting piece 31 and the shell 1 enclose to form an installation space for installing the air inlet assembly 4 and the air injection assembly 5. Wherein, the air intake assembly 4 is located at one side of the connecting piece 31 close to the shell 1, and the air injection assembly 5 is located at one side of the connecting piece 31 far away from the shell 1.

The housing 1 is provided with an air inlet channel 11, the air inlet channel 11 penetrates through the housing 1 along a first direction, the air inlet channel 11 is provided with an air inlet end and an air outlet end which are oppositely arranged along the first direction, and during the working process of the injector, gas is introduced into the injector through the air inlet end, and in the embodiment of the application, the gas is preferably hydrogen.

Referring to fig. 1 and 2, in detail, the intake assembly 4 includes a seal seat 41, a moving member 42, a coil portion 49, and an elastic member 43 sequentially disposed in an installation space along a first direction. The coil portion 49 is sleeved on the housing 1, and one end of the connecting member 31 abuts against the coil portion 49 to limit the coil portion 49 in the first direction, so that abnormal movement of the coil portion 49 does not occur when the injector works. The moving member 42 is a common armature, and the coil portion 49 in the embodiment of the present application is a common exciting coil, and generates magnetism after being energized.

When the coil portion 49 is not energized, the moving member 42 is pressed against the seal seat 41 by the elastic member 43; when the coil portion 49 is energized, magnetism is generated, and the mover 42 moves toward the intake end by the attraction of the coil portion 49. During operation of the injector, the moving member 42 is reciprocally movable in a first direction under the combined action of the elastic member 43 and the coil portion 49.

The elastic member 43 in the embodiment of the present application may be a spring, and one end of the housing 1 is provided with a first receiving groove 12 for receiving the elastic member 43, and the first receiving groove 12 extends along a first direction and communicates with the air outlet end of the air inlet channel 11. The radial dimension of the first accommodating groove 12 is larger than the radial dimension of the air inlet channel 11 in the application, namely, the connection part of the first accommodating groove 12 and the air inlet channel 11 forms a step-shaped structure. One end of the elastic member 43 abuts against the groove wall of the first accommodation groove 12, and the other end abuts against the moving member 42.

In addition, a second accommodating groove 13 is further provided in the housing 1 at an end of the first accommodating groove 12 away from the intake passage 11, and the moving member 42 is movably mounted in the second accommodating groove 13 along the first direction. The second accommodation groove 13 extends in the first direction and communicates with an end of the first accommodation groove 12 remote from the intake passage 11. In the application, the radial dimension of the second accommodating groove 13 is larger than that of the first accommodating groove 12, the joint of the second accommodating groove 13 and the first accommodating groove 12 also forms a step-shaped structure, and when the coil part 49 is electrified, the moving part 42 moves towards the air inlet end under the adsorption action of the coil part 49 until impacting on the groove wall of the second accommodating groove 13 and is abutted with the groove wall of the second accommodating groove 13.

Referring to fig. 1 and 3, further, in order to prolong the service life of the moving member 42, a protrusion 44 and a deformation member 45 are disposed on a side of the moving member 42 near the elastic member 43, where the protrusion 44 is integrally formed on an end surface of the moving member 42 facing the elastic member 43, and the deformation member 45 is made of a flexible material, which may be a flexible material such as silica gel or rubber, and is not limited herein. The deforming member 45 is adhered to the end face of the moving member 42 facing the elastic member 43.

Wherein, the bulge 44 and the deformation piece 45 are both annular structures. In the first direction, the size of the deformation element 45 beyond the end surface of the moving element 42 is larger than the size of the protrusion 44 beyond the cross section of the moving element 42, that is, when the moving element 42 impacts the groove wall of the second accommodating groove 13, the deformation element 45 impacts the casing 1 first, then the deformation element 45 deforms elastically, part of the impact force of the moving element 42 is buffered, then the moving element 42 moves continuously, the protrusion 44 impacts the casing 1, and the moving element 42 stops moving. The protrusion 44 and the deformation member 45 provided on the moving member 42 play a double buffering role, and reduce the abrasion of the moving member 42 itself, thereby prolonging the service life of the moving member 42.

Referring to fig. 2 and 3, the moving member 42 has a first channel 421, and the first channel 421 is connected to the air outlet end of the air inlet channel 11 through the first accommodating groove 12 and the second accommodating groove 13. The first passage 421 specifically includes a first vent hole 4211 extending in a first direction and a second vent hole 4212 extending in a second direction. The first vent hole 4211 has a first air inlet end and a first air outlet end which are oppositely arranged along the first direction, and the first air inlet end penetrates through the end face of the moving member 42 facing the elastic member 43; the second vent hole 4212 penetrates the moving member 42 along the second direction and communicates with the first vent end.

In addition, a second channel 6 is formed between the outer wall of the moving member 42, the end surface of the sealing seat 41 facing the moving member 42, and the inner wall of the connecting member 31, and in the embodiment of the application, the open and close states of the second channel 6 are controlled by controlling whether the coil part 49 is electrified or not.

Referring to fig. 1 to 3, specifically, when the coil portion 49 is energized (when the injector is in an operating state), the moving member 42 moves toward the air intake end under the adsorption of the coil portion 49, the moving member 42 and the seal seat 41 are separated from each other, at this time, the second passage 6 is in an open state, and the second passage 6 communicates with the first passage 421 through the second vent hole 4212; when the coil portion 49 is de-energized (when the injector is in an inactive state), the magnetism is lost, and the moving member 42 moves toward the seal seat 41 by the urging action of the elastic member 43 until the seal seat 41 abuts against each other, at which time the second passage 6 is closed.

Referring to fig. 3, further, in order to enhance the air tightness between the moving member 42 and the sealing seat 41 when the injector is in the inactive state, in the embodiment of the present application, a sealing filling member 46 is disposed at an end of the moving member 42 near the sealing seat 41, a groove into which the sealing filling member 46 is inserted is circumferentially disposed on an end surface of the moving member 42, and a convex ring 47 is integrally formed on an end surface of the sealing seat 41 facing the moving member 42. When the moving member 42 abuts against the sealing seat 41 under the pushing action of the elastic member 43, the sealing filler 46 abuts against the end surface of the moving member 42, and the convex ring 47 is embedded into the sealing filler 46 to improve the air tightness between the moving member 42 and the sealing seat 41.

Referring to fig. 2 and 3, the seal seat 41 has an annular structure, the outer ring of the seal seat 41 abuts against the inner ring of the connecting member 31, the inner ring of the seal seat 41 forms a third channel 411 for gas to pass through, and the third channel 411 is communicated with the second channel 6.

Referring to fig. 1, in addition, the air intake assembly 4 of the present application further includes an adjusting gasket 48, where the adjusting gasket 48 is also in an annular structure and is coaxially disposed with the sealing seat 41, the adjusting gasket 48 is located at a side of the sealing seat 41 away from the moving member 42, and an end surface of the adjusting gasket 48 at a side of the sealing seat 41 is abutted against the connecting member 31, so as to control the moving member 42 and the stroke, thereby eliminating the machining dispersion of the moving member 42.

Referring to fig. 1 and 2, the air injection assembly 5 includes a valve body 51 and a needle valve 52 extending in a first direction, an air outlet passage 511 communicating with the third passage 411 is provided in the valve body 51, the air outlet passage 511 extends in the first direction and penetrates through the valve body 51, the needle valve 52 is movably provided in the air outlet passage 511 along the first direction, and the needle valve 52 is configured to be capable of reciprocating along the first direction. A gap is left between the side wall of the needle valve 52 and the inner wall of the gas outlet passage 511 to allow gas to circulate.

Referring to fig. 1 and 4, in addition, the air injection assembly 5 further includes a guide member 53 disposed in the first channel 421, the guide member 53 is in a disc-shaped structure, a periphery of the guide member 53 is integrally formed on an inner wall of the valve body 51 (i.e. an inner wall of the air outlet channel 511), a guide channel 531 through which the needle valve 52 passes and a plurality of air-flowing channels 532 are disposed at a central position of the guide member 53 along the first direction, and the plurality of air-flowing channels 532 are uniformly distributed along a circumferential direction of the guide channel 531.

Referring to fig. 1, 4 and 5, the side wall of the needle valve 52 is radian-matched with the inner wall of the guide channel 531, the guide channel 531 on the guide member 53 is matched with the side wall of the needle valve 52 to perform a guiding function, and the matching tolerance between the needle valve 52 and the guide member 53 can be determined according to actual requirements, so as to ensure that no abrasion occurs between the side wall of the needle valve 52 and the inner wall of the guide channel 531.

Referring to fig. 1 and 5, the needle valve 52 is provided with opposite first and second ends in the first direction, the second end being closer to the intake end of the intake passage 11 than the first end.

In the embodiment of the application, the needle valve 52 is integrally formed with the sealing member 54 at the first end, the sealing member 54 extends out of the air outlet channel 511, and the sealing member 54 can block the air outlet channel 511 in the moving process of the needle valve 52, so that the air outside the injector is not easy to enter the air path inside the injector from the air outlet channel 511, and the condition that the external air and the hydrogen gas input into the injector form a butt is reduced.

Specifically, the sealing member 54 in the present application adopts a tapered structure, the radial dimension of the sealing member 54 gradually decreases from the first end to the second end, the surface of the sealing member 54 facing the valve body 51 is a first abutment surface 541, and a second abutment surface 512 is formed at the port of the valve body 51 near the first end. The first abutting surface 541 and the second abutting surface 512 are two conical surfaces which are matched and attached, and when the first abutting surface 541 and the second abutting surface 512 abut against each other, the air outlet channel 511 can be blocked, so that the air outlet channel 511 is blocked.

Referring to fig. 1, 4 and 5, in addition, a stepped shaft 58 is integrally formed on the needle valve 52 at the second end, the stepped shaft 58 is coaxially disposed with the needle valve 52, and the radial dimension of the stepped shaft 58 is larger than the radial dimension of the needle valve 52. The valve body 51 is provided with a mounting groove 513 near the second end, the mounting groove 513 and the air outlet channel 511 are coaxially arranged and mutually communicated, the radial dimension of the mounting groove 513 is larger than that of the air outlet channel 511, the mounting groove 513 in the embodiment of the application is a circular stepped groove with a convex cross section, and the diameter of the side of the mounting groove 513 near the first end is smaller than that of the side near the second end. The installation groove 513 is sequentially sleeved with a reset piece 55, a fixed seat 56 and a locking piece 57 along the first direction on the needle valve 52.

Referring to fig. 1, 5 and 6, the return member 55 may be a spring, and the return member 55 is sleeved on the needle valve 52 and the stepped shaft 58. The fixing seat 56 adopts a circular ring structure, the outer ring of the fixing seat 56 is fit with the inner wall of the mounting groove 513, and a plurality of through holes 561 for air circulation are formed in the fixing seat 56 in a penetrating manner along the circumferential direction. Retaining member 57 may be a nut with retaining member 57 threadably coupled to the second end of needle valve 52.

Referring to fig. 1 and 4, the fixing base 56 is disposed on a side of the stepped shaft 58 near the second end, the locking member 57 is disposed on a side of the fixing base 56 opposite to the stepped shaft 58, and an operator tightens the locking member 57 during assembly, so that the end face of the fixing base 56 and the end face of the stepped shaft 58 facing the second end abut against each other, and the installation procedure of the fixing base 56 is completed. One end of the reset member 55 is abutted against the groove wall of the mounting groove 513, the other end is abutted against the fixing seat 56, and the reset member 55 utilizes self elasticity to enable the needle valve 52 to return to the original position after moving, so that a reset function is achieved.

As shown in connection with fig. 1 to 6, the injector comprises two stages of sealing, respectively an inlet sealing by means of an inlet assembly 4 and an outlet sealing by means of an outlet assembly 5. The air inlet seal is realized by the contact of the seal packing 46 with the convex ring 47 on the seal seat 41, and the deformation of the seal packing 46 is performed to complete the air seal. The jet seal is achieved by the first and second abutment surfaces 541 and 512 abutting each other.

Referring to fig. 1 and 2, specifically, when the injector is in a non-working state, the coil portion 49 is not energized, the moving member 42 is pressed against the sealing seat 41 by the elastic member 43, the sealing filling member 46 deforms, the third channel 411 is blocked, and the air channel blocking is completed;

when the injector is in an operating state, gas enters the gas inlet channel 11 through the gas inlet end, at this time, the coil part 49 starts to be electrified and generates magnetism gradually, the adsorption moving part 42 moves towards the gas inlet end, at this time, the sealing filling part 46 is separated from the convex ring 47 on the sealing seat 41, the third channel 411 is opened, the gas sequentially passes through the first accommodating groove 12 and the first channel 421 and then enters the second channel 6, and then sequentially flows into the third channel 411, the mounting groove 513 and the gas outlet channel 511 through the second channel 6. In the installation groove 513, the gas flows through the through holes 561 of the fixing base 56, and the gas flows through the gas outlet channel 511 through the gas passing channel 532 of the guide 53.

Before the gas flows into the gas outlet channel 511, the first contact surface 541 of the sealing member 54 and the second contact surface 512 are always in contact with each other under the elastic force of the resetting member 55, so as to realize sealing. After flowing into the air outlet channel 511, the air acts on the first abutting surface 541 of the sealing member 54, the sealing member 54 is pushed by the air pressure and drives the needle valve 52 to move, so that the sealing member 54 moves away from the valve body 51, the first abutting surface 541 is separated from the second abutting surface 512, and air injection is completed, so that one complete cycle of air injection is completed.

An embodiment of the present application also provides a vehicle (not shown) to which the above-described injector is applied.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. An injector, the injector comprising:

the shell is arranged in an extending mode along a first direction, an air inlet channel is formed in the shell, and the air inlet channel penetrates through the shell along the first direction;

the connecting component is connected with the shell, an installation space is formed by surrounding the connecting component and the shell, and the installation space is communicated with the air inlet channel;

the air inlet assembly comprises a sealing seat and a moving part which are arranged in the installation space, and the moving part is arranged between the sealing seat and the shell; and

The air injection assembly is connected with the shell by virtue of the connecting assembly and comprises an air outlet channel, and the air outlet channel is communicated with the installation space;

wherein the moving member includes a first position and a second position, the first position being closer to the intake passage than the second position;

when the moving piece is positioned at the first position, the moving piece is abutted with the sealing seat, and the air inlet channel and the air outlet channel are isolated;

when the moving part is located at the second position, the moving part is separated from the sealing seat, and the air inlet channel and the air outlet channel are communicated.

2. The injector of claim 1, wherein the moving member has a first passage, the first passage communicates with the intake passage, a second passage is defined between a side of the moving member facing away from the intake passage and an inner wall of the seal seat and the installation space, the second passage is isolated from the intake passage when the moving member is in the first position, the second passage is capable of communicating with the first passage when the moving member is in the second position, and the seal seat has a third passage capable of communicating with the second passage.

3. The injector of claim 1, wherein the mounting space includes a first receiving groove having a dimension greater than a dimension of the intake passage in a second direction, the second direction being perpendicular to the first direction;

the air inlet assembly further comprises a coil part and an elastic piece, wherein the elastic piece is arranged in the first accommodating groove, the elastic piece is abutted between the groove wall of the first accommodating groove and the moving piece, the elastic piece is configured to stretch and retract along the first direction, and the coil part is sleeved outside the moving piece.

4. The injector of claim 3, wherein the housing has a second receiving slot therein extending in the first direction, the moving member being movably disposed in the second receiving slot in the first direction;

the air inlet assembly further comprises a protrusion and a deformation piece, wherein the protrusion is arranged on one side of the movable piece, close to the elastic piece, the deformation piece is connected with the movable piece, the deformation piece protrudes towards the elastic piece in the first direction and exceeds the protrusion, and the deformation pieces are configured to stretch and retract along the first direction.

5. The injector of claim 3, wherein the air injection assembly includes a valve body extending in the first direction and a needle valve, the air outlet passage extending through the valve body in the first direction, the needle valve movably disposed within the air outlet passage in the first direction.

6. The injector of claim 5, wherein the jet assembly further comprises a guide member disposed within the outlet passage, the guide member comprising a guide passage and at least one flow-through passage, the guide passage and all of the flow-through passages extending through the guide member in the first direction, respectively, and the guide passage and the flow-through passage being spaced apart in the second direction, the needle valve being capable of passing through the guide member through the guide passage.

7. The injector of claim 5, wherein the needle valve has a first end and a second end disposed opposite in the first direction, the second end being closer to the housing than the first end;

the jet assembly further comprises a sealing member provided at the first end, the sealing member gradually decreasing in size in the second direction from the first end to the second end;

when the moving member is located at the first position, the sealing member seals the air outlet channel;

when the moving part is positioned at the second position, the sealing part enables the air outlet channel to be communicated.

8. The injector of claim 7, wherein an end of the valve body adjacent the second end is provided with a mounting groove, the mounting groove having a size in the second direction that is larger than the size of the outlet passage;

the jet assembly further comprises a reset piece, a fixing seat and a locking piece which are arranged in the mounting groove, the fixing seat is fixed on the needle valve by means of the locking piece, the reset piece, the fixing seat and the locking piece are respectively sleeved at the second end along the first direction in sequence, the reset piece is abutted between the groove wall of the mounting groove and the fixing seat, and the reset piece is configured to stretch and retract along the first direction.

9. The injector of claim 5, wherein the connection assembly comprises a connection member and a fastener, the connection member is disposed between the valve body and the housing, two ends of the connection member in the first direction are respectively abutted to the valve body and the housing, the fastener is sleeved on the valve body, the connection member and the coil portion along the first direction, the fastener is connected to the housing, and the installation space is defined among the connection member, the fastener and the housing.

10. A vehicle comprising an injector as claimed in any one of claims 1 to 9.