CN217176761U - Electric injection throttle body - Google Patents

Abstract

The utility model discloses an electronic injection throttle body, which comprises a body (1), wherein the lower end of the body (1) is provided with a control driving mechanism (2), the output end of the control driving mechanism (2) is upwards connected with a throttle shaft actuating mechanism (3) through an elastic pin mechanism, the throttle shaft actuating mechanism (3) is positioned in the body (1), and the body (1) is also provided with an oil injector mechanism (4); the elastic pin mechanism comprises a suspension (8) inserted on the output end of the motor (7), a sliding pin seat (9) is movably arranged in the suspension (8), one side of the sliding pin seat (9) is provided with a sliding pin (10) protruding outwards, an elastic piece is arranged on the sliding pin (10), the outer side end of the elastic piece is abutted against the inner side wall of the sliding pin seat (9), and the other pair of side faces of the sliding pin seat (9) is matched with the lower side end of the throttle shaft actuating mechanism (3). The utility model has the advantages of eliminate delay clearance.

Description

Electric injection throttle valve body

Technical Field

The utility model relates to the technical field of engines, especially, relate to an electricity spouts throttle body.

Background

The electronic injection throttle body is an important part in an electronic fuel injection system of a gasoline engine and is arranged on an air inlet manifold of the engine. Its main function is to control the various operating conditions of the engine by controlling the air flow rate drawn into the engine. The electronic injection throttle body comprises a throttle main channel for controlling air inflow and an idle air bypass channel. The throttle position sensor is arranged on a throttle shaft and used for detecting the opening of the throttle; the idle air control valve is installed on the idle air bypass passage, and automatically regulates the flow of air sucked into the engine according to the instruction of the engine control unit when the throttle valve is in a fully closed state during the idle running of the engine. Along with the improvement of energy conservation and emission reduction, economy and applicability, small-size lightweight, universalization and other requirements of general engines at home and abroad, an adjusting mechanism in the conventional electronic injection throttle body is positioned inside and cannot be simultaneously adapted to two speed regulation modes of a mechanical type and an electronic type; a motor in the existing electronic injection throttle valve body can generate a rotation delay gap when a rocker arm drives a throttle valve shaft suspension to rotate.

In patent CN202210043628.4, an electronic injection throttle body is disclosed, which comprises a body (1), wherein a control system is arranged on the body (1), a motor (2) is fixed at the lower end of the body (1), a throttle shaft actuating mechanism (3) is arranged between the output end of the motor (2) and the control system, the throttle shaft actuating mechanism (3) is located in the body (1), and a fuel injector mechanism (4) is arranged outside the body (1); the control system comprises a shell (7) fixed on the body (1), a PCB (printed circuit board) is fixed in the shell (7), and the PCB (8) is electrically connected with a bus slot (9), a temperature sensor (10), a pressure sensor (11), a throttle opening position sensor (12), a circuit socket and a processing chip; the utility model has the advantages of the commonality is higher, and the suitability is stronger, but the problem in rotatory delay clearance can not be solved to this patent.

In patent CN201710329934.3, an electronic injection throttle valve is disclosed, which comprises a body, a throttle shaft mounted on the body, an ECU plate and a motor, wherein the ECU plate is disposed in an accommodating chamber of the body, an air inlet temperature sensor is mounted at an air inlet end of a throat pipe of the body, the air inlet temperature sensor is connected with the ECU plate, the throttle shaft passes through the throat pipe, a magnet rocker arm is disposed at a lower end of the throttle shaft, a hall sensor is disposed on the ECU plate, a chip sensing center of the hall sensor and a magnet of the magnet rocker arm are coaxially disposed and have a gap, an annular groove is further disposed on the ECU plate, a suspension is connected to a shaft of the motor, the magnet rocker arm passes through the annular groove and is connected with the suspension, but the patent cannot solve the problem of a rotation delay gap.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide an electricity and spout throttle body to solve above-mentioned defect.

The purpose of the utility model is realized through the following technical scheme:

an electronic injection throttle body comprises a body;

the lower end of the body is provided with a control driving mechanism, the output end of the control driving mechanism is upwards connected with a throttle shaft actuating mechanism through an elastic pin mechanism, the throttle shaft actuating mechanism is positioned in the body, the body is also provided with an oil injector mechanism, the upper end of the throttle shaft actuating mechanism is also connected with an adjusting mechanism, and the adjusting mechanism is positioned outside the upper end of the body; the control driving mechanism comprises a control system arranged in the connecting shell and a driving assembly arranged in the motor shell, and the driving assembly comprises a motor integrally arranged with the motor shell; the elastic pin mechanism comprises a suspension inserted on the output end of the motor, a sliding pin seat is movably arranged in the suspension, one side of the sliding pin seat is provided with a sliding pin protruding outwards, an elastic piece is arranged on the sliding pin, the outer side end of the elastic piece is abutted against the inner side wall of the sliding pin seat, and the other pair of side surfaces of the sliding pin seat is matched with the lower side end of the throttle shaft actuating mechanism.

Furthermore, a fixed groove and a sliding groove are formed in the suspension, the fixed groove is clamped with the output end of the motor, the sliding pin seat is arranged in the sliding groove in a sliding mode, and the outer side end of the elastic piece is abutted to the inner wall of the sliding groove; the lower side end of the throttle shaft actuating mechanism is positioned in the sliding groove.

Furthermore, the throttle shaft actuating mechanism comprises a rotary seat which is rotatably arranged on the lower side of the body, a driving lever which extends downwards is fixedly arranged on the side circumferential surface of the rotary seat, the driving lever extends into the sliding pin seat, a throttle shaft which extends upwards is fixedly arranged at the center of the rotary seat, a throttle sheet is movably arranged in the middle of the throttle shaft, a through hole is formed in the body, the throttle sheet is positioned in the middle of the through hole, and the throttle sheet is used for controlling whether the two ends of the through hole are communicated or not.

Further, the fuel injector mechanism comprises a fuel injection nozzle, a sealing ring, an electric control plug and a high-pressure fuel input quick connector, and the fuel injector mechanism is installed on the outer side of the body.

Furthermore, the upper end of the body is provided with a cylinder extending upwards and a stop block, and the throttle shaft extends out of the body through the cylinder; the adjusting mechanism is including being fixed in the spacing of throttle shaft upper end, the drum overcoat is equipped with the torsional spring, the one end and the torsional spring of spacing side end swing joint, it has the bumping post to spin the dog, spacing other end and the bumping post extend end terminal surface activity butt.

Furthermore, a motor groove which is sunken downwards is formed in the motor shell, a plurality of vertical ribs are arranged in the motor groove, and the inner side ends of the vertical ribs are abutted to the outer wall of the motor; the motor groove is provided with two vertical screw sleeves, a fixing plate is fixed on the motor through a bolt, and the extending end of the bolt is screwed in the vertical screw sleeves.

Further, the connecting shell and the motor shell are fixed through bolts and are positioned through a plurality of first positioning pins; the connecting shell is provided with a second positioning pin extending upwards, the body is provided with a positioning hole, and the second positioning pin is matched with the positioning hole.

Furthermore, control system is including being fixed in the PCB board between connecting shell and the motor casing, electricity is connected with bus slot, temperature sensor, pressure sensor, throttle valve opening position sensor, circuit socket and processing chip on the PCB board.

Furthermore, the outer side of the body is provided with a boss protruding outwards, a T-shaped pressure taking hole is formed in the body, the lower side end of the T-shaped pressure taking hole vertically extends to the bottom plate of the body, one side of the upper side end of the T-shaped pressure taking hole transversely extends into the boss, and the other side of the upper side end of the T-shaped pressure taking hole extends to the inner cavity wall of the body.

Furthermore, the upper side of the connecting shell is provided with a water accumulating tank, and the lower side end of the T-shaped pressure taking hole corresponds to the water accumulating tank.

The utility model has the advantages that:

1. the electric injection throttle body provided by the utility model has the advantages that the motor shell and the motor are integrated, so that the slight rotation of the motor after being installed in the motor shell is convenient to restrain, and the up-and-down movement of the motor is restrained; the electronic injection throttle body is convenient for blind installation in the later period through the integrated arrangement of the motor shell and the motor;

2. the utility model discloses an open type elastic support leg of the sliding pin seat is arranged in the suspension, and meanwhile, the initial position is limited by a chute in the cantilever, so that an initial slot is formed for the entry of a driving lever during blind installation; meanwhile, an arc-shaped surface is arranged at the shifting rod inserting side of the sliding pin seat, so that the shifting rod can be smoothly inserted in blind installation; when the deflector rod is inserted into the suspension, the deflector rod pushes the sliding pin seat to separate from the initial position; when the motor rotates, the suspension is driven to rotate, the return spring on the sliding pin is compressed at the moment, and the spring force acts on the sliding pin seat and further acts on the deflector rod, so that the sliding pin seat is always tightly attached to the deflector rod in the rotation process of the suspension, and the delay gap in the rotation process is eliminated;

3. the utility model arranges the lower side of the T-shaped pressure-taking hole outside, cuts and increases meat at the throat of the body to form a boss, increases the setting space of the T-shaped pressure-taking hole, and is arranged into a T-shaped cross pressure-taking hole design which penetrates upwards and transversely penetrates through the throat; through the arrangement of the T-shaped pressure taking hole, condensed water formed by hot air after the cold machine is prevented from sliding into the pressure taking hole under the action of gravity, and further the pressure sensor is prevented from being damaged by flowing into the pressure sensor;

4. the water accumulation groove is arranged at the position corresponding to the sensor at the upper part of the connecting shell, a small amount of water in the T-shaped pressure tapping hole can be deposited in the water accumulation groove, and when the engine works, the water in the water accumulation groove is pumped out by the negative pressure of the engine through the T-shaped pressure tapping hole, so that the pressure sensor is prevented from being damaged;

5. the utility model discloses it is external with this external overhead location of adjustment mechanism for this electricity spouts throttle body has solved the problem that mechanical type and electronic type can not share.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic structural diagram of the present invention;

fig. 3 is a front view of the present invention;

fig. 4 is a schematic view of the internal structure of the present invention;

FIG. 5 is a schematic structural view of the spring pin mechanism;

FIG. 6 is a schematic view of the suspension;

FIG. 7 is a schematic view of the construction of the sliding pin boss;

FIG. 8 is a schematic structural view of the body, the coupling housing and the motor housing;

fig. 9 is a cross-sectional view of the body.

In the figure, 1-body, 11-cylinder, 12-block, 13-torsion spring, 14-catch, 15-boss, 16-T type pressure-taking hole, 2-control driving mechanism, 3-valve shaft actuating mechanism, 31-rotary seat, 32-deflector rod, 33-throttle shaft, 34-throttle sheet, 4-oil sprayer mechanism, 5-connecting shell, 51-second positioning pin, 52-PCB plate, 53-bus slot, 54-water accumulating tank, 6-motor shell, 61-vertical rib, 62-screw sleeve, 63-fixing plate, 64-first positioning pin, 7-motor, 8-suspension, 81-fixing slot, 82-sliding slot, 9-sliding pin seat, 91-elastic support leg, 92-reset spring, 10-sliding pin.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.

In the present embodiment, as shown in fig. 1 to 9, an electronic fuel injection throttle body includes a body 1; the lower end of the body 1 is provided with a control driving mechanism 2, the output end of the control driving mechanism 2 is upwards connected with a throttle shaft actuating mechanism 3 through an elastic pin mechanism, the throttle shaft actuating mechanism 3 is positioned in the body 1, the body 1 is also externally provided with an oil injector mechanism 4, the upper side end of the throttle shaft actuating mechanism 3 is also connected with an adjusting mechanism, and the adjusting mechanism is positioned outside the upper end of the body 1; a connecting shell 5 is arranged on the lower side of the body 1, a motor shell 6 is arranged on the lower side of the connecting shell 5, the control driving mechanism 2 comprises a control system arranged in the connecting shell 5 and a driving assembly arranged in the motor shell 6, and the driving assembly comprises a motor 7 integrally arranged with the motor shell 6; the elastic pin mechanism comprises a suspension 8 inserted on the output end of the motor 7, a sliding pin seat 9 is movably arranged in the suspension 8, one side of the sliding pin seat 9 is provided with a sliding pin 10 protruding outwards, an elastic piece is arranged on the sliding pin 10, the outer side end of the elastic piece is abutted against the inner side wall of the sliding pin seat 9, and the other pair of side surfaces of the sliding pin seat 9 is matched with the lower side end of the throttle shaft actuating mechanism 3.

In this embodiment, the sliding pin seat 9 is integrally formed, and the upper end of the sliding pin seat 9 is provided with two elastic support legs 91 extending upwards; each edge of the sliding pin seat 9 is of an arc-shaped structure; the resilient member is a return spring 92.

In the embodiment, the adjusting mechanism is arranged outside the main body, so that the electronic injection throttle valve can adapt to two speed regulation modes of a mechanical type and an electronic type, because the adjusting mechanism is arranged on the main body, the control system must be arranged on the lower side or on the side, but the side is limited by the installation space of the throttle valve body on the whole vehicle, the lower side is required, and the integration of the motor 7 and the motor shell 6 is a solution for solving the problem of insufficient design area of a PCB (printed circuit board) when the lower side is in a structure.

The embodiment is further configured as follows: a fixed groove 81 and a sliding groove 82 are formed in the suspension 8, the fixed groove 81 is clamped with the output end of the motor 7, the sliding pin seat 9 is arranged in the sliding groove 82 in a sliding mode, and the outer side end of the elastic part is abutted to the inner wall of the sliding groove 82; the lower end of the throttle shaft actuator 3 is located in the slide groove 82.

In this embodiment, the upper end of the inner side wall of the sliding groove 82 in the length direction has a protruding strip protruding inward, the outer end of the elastic leg 91 is provided with a sliding groove, and the protruding strip is adapted to the sliding groove; the lower end of the sliding pin boss 9 also has two downwardly extending bars which form a rotational position limitation of the suspension 8 with the bolts used for fixing the motor 7.

The embodiment is further configured as follows: the throttle shaft actuating mechanism 3 comprises a rotary seat 31 rotatably arranged on the lower side of the body 1, a shifting lever 32 extending downwards is fixed on the side circumferential surface of the rotary seat 31, the shifting lever 32 extends into the sliding pin seat 9, a throttle shaft 33 extending upwards is fixed at the center of the rotary seat 31, a throttle sheet 34 is movably arranged in the middle of the throttle shaft 33, a through hole is formed in the body 1, the throttle sheet 34 is located in the middle of the through hole, and the throttle sheet 34 is used for controlling whether the two ends of the through hole are communicated or not.

In the above embodiment, the sliding pin seat 9 is installed in the suspension 8 through its own open type elastic support leg 91, and the initial position is limited by the sliding slot in the cantilever, so that an initial slot is formed for the entry of the shift lever 32 during blind installation; meanwhile, an arc-shaped surface is arranged at the insertion side of the shift lever 32 of the sliding pin seat 9, so that the shift lever 32 can be smoothly inserted in blind installation; when the shift lever 32 is inserted into the suspension 8, the shift lever 32 pushes the sliding pin boss 9 away from the initial position; when the motor 7 rotates, the suspension 8 is driven to rotate, at the moment, the return spring 92 on the sliding pin 10 is compressed, and the spring force acts on the sliding pin seat 9 and further acts on the shifting lever 32, so that the sliding pin seat 9 is always tightly attached to the shifting lever 32 in the rotation process of the suspension 8, and the delay gap in the rotation process is eliminated.

The embodiment is further configured as follows: the fuel injector mechanism 4 comprises a fuel injection nozzle, a sealing ring, an electric control plug and a high-pressure fuel input quick connector, and the fuel injector mechanism 4 is installed on the outer side of the body 1.

The embodiment is further configured as follows: the upper end of the body 1 is provided with a cylinder 11 and a stop 12 which extend upwards, and the throttle shaft 33 extends out of the body through the cylinder 11; the adjustment mechanism is including being fixed in the spacing 17 of throttle shaft 33 upper end, 11 overcoat of drum is equipped with torsional spring 13, the one end of spacing 17 and the side end swing joint on the torsional spring 13, stopper 12 top spin has connect bumping post 14, spacing 17's the other end and the bumping post 14 extend end terminal surface activity butt.

The embodiment is further configured as follows: a motor groove which is sunken downwards is formed in the motor shell 6, a plurality of vertical ribs 61 are arranged in the motor groove, and the inner side ends of the vertical ribs 61 are abutted with the outer wall of the motor 7; the motor groove is provided with two vertical thread sleeves 62, a fixing plate 63 is fixed on the motor 7 through a bolt, and the extending end of the bolt is screwed in the vertical thread sleeves 62.

In this embodiment, 5 vertical ribs 61 are provided in the motor housing 6 for fixing the motor 7 and restraining the slight rotation of the motor 7 after being installed in the motor housing 6, and the vertical screw sleeve 62 is provided for mounting the motor 7 in the motor housing 6 by using the fixing plate 63 and restraining the vertical movement of the motor 7.

The embodiment is further configured as follows: the connecting shell 5 and the motor shell 6 are fixed through bolts and are positioned through a plurality of first positioning pins 64; the connecting shell 5 is provided with a second positioning pin 51 extending upwards, the body 1 is provided with a positioning hole, and the second positioning pin 51 is matched with the positioning hole.

In this embodiment, 4 first positioning pins 64 are arranged around the motor casing 6, and 4 positioning pin holes are arranged at corresponding positions of the connecting casing 5, so as to accurately position the motor 7 and the motor casing 6 as a whole to be assembled and positioned with the connecting casing 5; through the setting of second locating pin 51 and locating hole for be used for the accurate location between connecting shell 5 and the body 1, form relatively accurate location assembly relation between motor 7, motor casing 6, connecting shell 5 and the body 1 that just so make.

The embodiment is further configured as follows: the control system comprises a PCB (printed circuit board) 52 fixed between the connecting shell 5 and the motor shell 6, and the PCB 52 is electrically connected with a bus slot 53, a temperature sensor, a pressure sensor, a throttle opening position sensor, a circuit socket and a processing chip.

In this embodiment, the electric signal processing units of the motor 7 and the fuel injector mechanism are both disposed on the PCB 52; the motor shell 6 is further provided with a through hole, and the bus slot 53 corresponds to the through hole.

The embodiment is further configured as follows: the outside of body 1 has outside convex boss 15, be provided with T type in the body 1 and get pressure hole 16, the bottom plate that the lower side end of T type pressure hole 16 vertically extended to body 1, one side of the upper end of T type pressure hole 16 transversely extends to in the boss 15, and its other side extends to on the inner chamber wall of body 1.

In the scheme, the control system is arranged below, the air inlet pressure sensor is arranged below, and the pressure taking hole communicated with the sensor cannot be positioned at the upper end of the throat opening of the throttle body, so that the position of the pressure taking hole is set to be a technical difficulty, two factors are considered when the pressure taking hole is set, firstly, the pressure taking hole must be positioned in the middle of the throat opening, and the direction of the pressure taking opening cannot be upward, so that condensed water formed by hot air after a cold machine cannot slide into the pressure taking hole due to the action of gravity, and then flows into the pressure sensor to damage the pressure sensor; and secondly, the project is universal for the throttle body with small caliber and small discharge capacity. Based on the two points, namely if the pressure measuring hole directly penetrates from the sensor to the throat, the pressure measuring hole is upward, and if a throttle body with a smaller diameter is applied, the pressure measuring hole directly penetrates through the pressure measuring hole, so that the pressure measuring hole cannot be communicated with the throat;

therefore, in the embodiment, the lower side of the T-shaped pressure taking hole 16 is arranged externally, the throat of the body 1 is cut to increase meat to form a boss 15, the arrangement space of the T-shaped pressure taking hole 16 is increased, and the T-shaped pressure taking hole is designed to be a T-shaped cross pressure taking hole which penetrates upwards and transversely penetrates through the throat; through the arrangement of the T-shaped pressure tapping hole 16, condensed water formed by hot air after the cold machine is prevented from sliding down into the pressure tapping hole under the action of gravity, and then the pressure sensor is prevented from being damaged in the pressure sensor.

The embodiment is further configured as follows: the upper side of the connecting shell 5 is provided with a water collecting groove 54, and the lower side end of the T-shaped pressure taking hole 16 corresponds to the water collecting groove 54.

In this embodiment, in order to solve the waterproof problem caused by the underneath of the pressure sensor, except for adopting the design of the T-shaped cross pressure tapping hole, the T-shaped pressure tapping hole 16 is located at the middle upper part and faces downwards to avoid the water source entering, a small amount of condensed water still condenses in the T-shaped pressure tapping hole 16, and the small amount of condensed water entering the T-shaped pressure tapping hole 16 risks damaging the sensor.

The utility model discloses the theory of operation:

when the engine works, the control system automatically processes signals from the air inlet pressure sensor and the temperature sensor according to the change of the load of the engine, controls the rotation angle of the motor 7, further adjusts the opening degree of the throttle valve sheet 34 through the motor 7, the signal of the change of the opening degree is transmitted to the control system through the opening degree position sensor, further adjusts the oil injection quantity of the oil injector mechanism 4 to adapt to the air inflow of the corresponding opening degree, and the economical efficiency of fuel oil supply is ensured; the motor 7 drives the rotation of the throttle shaft 33 to drive the suspension 8 to rotate, then the torsion spring 13 is compressed after contacting the limiting frame 17, and when the throttle shaft 33 rotates, the torsion spring 13 provides a rotating force.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. An electricity spouts throttle body, includes body (1), its characterized in that:

the lower end of the body (1) is provided with a control driving mechanism (2), the output end of the control driving mechanism (2) is upwards connected with a throttle shaft actuating mechanism (3) through an elastic pin mechanism, the throttle shaft actuating mechanism (3) is positioned in the body (1), the body (1) is also externally provided with a fuel injector mechanism (4), the upper end of the throttle shaft actuating mechanism (3) is also connected with an adjusting mechanism, and the adjusting mechanism is positioned outside the upper end of the body (1); a connecting shell (5) is arranged on the lower side of the body (1), a motor shell (6) is arranged on the lower side of the connecting shell (5), the control driving mechanism (2) comprises a control system arranged in the connecting shell (5) and a driving assembly arranged in the motor shell (6), and the driving assembly comprises a motor (7) which is integrated with the motor shell (6); the elastic pin mechanism comprises a suspension (8) inserted on the output end of the motor (7), a sliding pin seat (9) is movably arranged in the suspension (8), one side of the sliding pin seat (9) is provided with a sliding pin (10) protruding outwards, an elastic piece is arranged on the sliding pin (10), the outer side end of the elastic piece is abutted against the inner side wall of the sliding pin seat (9), and the other pair of side faces of the sliding pin seat (9) is matched with the lower side end of the throttle shaft actuating mechanism (3).

2. An electrospray throttle body according to claim 1, characterized in that: a fixed groove (81) and a sliding groove (82) are formed in the suspension (8), the fixed groove (81) is clamped with the output end of the motor (7), the sliding pin seat (9) is arranged in the sliding groove (82) in a sliding mode, and the outer side end of the elastic piece is abutted to the inner wall of the sliding groove (82); the lower side end of the throttle shaft actuating mechanism (3) is positioned in the sliding groove (82).

3. An electrospray throttle body according to claim 1, characterized in that: throttle shaft actuates mechanism (3) and sets up in roating seat (31) of body (1) downside including rotating, be fixed with downwardly extending's driving lever (32) on the side circumference of roating seat (31), driving lever (32) extend to in sliding pin seat (9), roating seat (31) center is fixed with throttle shaft (33) that upwards extends, throttle shaft (33) middle part activity is provided with throttle piece (34), the through-hole has been seted up on body (1), throttle piece (34) are located the middle part of through-hole, throttle piece (34) are used for controlling whether the both ends of through-hole communicate.

4. An electrospray throttle body according to claim 1, characterized in that: the fuel injector mechanism (4) comprises a fuel injection nozzle, a sealing ring, an electric control plug and a high-pressure fuel input quick connector, and the fuel injector mechanism (4) is installed on the outer side of the body (1).

5. An electrospray throttle body according to claim 3, characterized in that: the upper end of the body (1) is provided with an upward extending cylinder (11) and a stop block (12), and the throttle shaft (33) extends out of the body through the cylinder (11); adjustment mechanism is including being fixed in spacing (17) of throttle shaft (33) upper end, drum (11) overcoat is equipped with torsional spring (13), the one end and the torsional spring (13) of spacing (17) side end swing joint, stopper (12) top spin has connect bumping post (14), the other end and bumping post (14) of spacing (17) extend the end face activity butt.

6. An electrospray throttle body according to claim 1, characterized in that: a motor groove which is sunken downwards is formed in the motor shell (6), a plurality of vertical ribs (61) are arranged in the motor groove, and the inner side ends of the vertical ribs (61) are abutted with the outer wall of the motor (7); the motor groove is provided with two vertical thread sleeves (62), a fixing plate (63) is fixed on the motor (7) through a bolt, and the extending end of the bolt is screwed in the vertical thread sleeves (62).

7. An electrospray throttle body according to claim 1, characterized in that: the connecting shell (5) and the motor shell (6) are fixed through bolts and are positioned through a plurality of first positioning pins (64); the connecting shell (5) is provided with a second positioning pin (51) extending upwards, the body (1) is provided with a positioning hole, and the second positioning pin (51) is matched with the positioning hole.

8. An electrospray throttle body according to claim 1, characterized in that: the control system comprises a PCB (52) fixed between a connecting shell (5) and a motor shell (6), wherein the PCB (52) is electrically connected with a bus slot (53), a temperature sensor, a pressure sensor, a throttle opening position sensor, a circuit socket and a processing chip.

9. An electrospray throttle body according to claim 8, characterized in that: the outside of body (1) has outside convex boss (15), be provided with T type in body (1) and get pressure hole (16), the lower side end of T type is got pressure hole (16) and is vertically extended to the bottom plate of body (1), one side of the upper end of T type is got pressure hole (16) transversely and is extended to in boss (15), on its other side extends to the inner chamber wall of body (1).

10. An electrospray throttle body according to claim 9, characterized in that: the upper side of the connecting shell (5) is provided with a water collecting groove (54), and the lower side end of the T-shaped pressure taking hole (16) corresponds to the water collecting groove (54).

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