An electronic injection throttle body

Abstract

The present invention discloses an electronic fuel injection throttle body, comprising a body (1), a control drive mechanism (2) being arranged at the lower end of the body (1), an output end of the control drive mechanism (2) being connected to a throttle shaft actuating mechanism (3) upwardly through an elastic pin mechanism, the throttle shaft actuating mechanism (3) being located inside the body (1), and an injector mechanism (4) being arranged outside the body (1); the elastic pin mechanism comprising a suspension (8) inserted on the output end of a motor (7), a sliding pin seat (9) being movably arranged inside the suspension (8), a sliding pin (10) protruding outwardly being arranged on one side of the sliding pin seat (9), an elastic member being arranged on the sliding pin (10), the outer end of the elastic member being in contact with the inner side wall of the sliding pin seat (9), and the other pair of side surfaces of the sliding pin seat (9) being adapted to the lower side end of the throttle shaft actuating mechanism (3). The present invention has the advantage of eliminating the delay gap.

Description

Technical Field

[0001] The invention relates to the technical field of engines, and in particular to an electronic injection throttle body. Background Art

[0002] The electronic fuel injection throttle body is an important component in the electronic fuel injection system of gasoline engines and is installed on the intake manifold of the engine. Its main function is to control various working conditions of the engine by controlling the air flow rate sucked into the engine. The electronic fuel injection throttle body includes a throttle main channel and an idle air bypass channel for controlling the intake volume. The throttle position sensor is installed on the throttle shaft to detect the throttle opening; the idle air control valve is installed on the idle air bypass channel. When the engine is idling and the throttle is in a fully closed state, the idle air control valve automatically adjusts the air flow rate sucked into the engine according to the instructions of the engine control unit. With the increasing requirements for energy conservation and emission reduction, economic applicability, small and lightweight, and universalization of general engines at home and abroad, the adjustment mechanism in the existing electronic fuel injection throttle body is located inside, which cannot adapt to both mechanical and electronic speed regulation methods at the same time; the motor in the existing electronic fuel injection throttle body will produce a rotation delay gap when the throttle shaft suspension is driven to rotate through the rocker arm.

[0003] Patent CN202210043628.4 discloses an electronic fuel injection throttle body, comprising a body (1), a control system being arranged on the body (1), a motor (2) being fixed at the lower side end of the body (1), a throttle shaft actuating mechanism (3) being arranged between the output end of the motor (2) and the control system, the throttle shaft actuating mechanism (3) being located inside the body (1), and an injector mechanism (4) being arranged outside the body (1); the control system comprising a housing (7) fixed on the body (1), a PCB board (8) being fixed inside the housing (7), 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 being electrically connected to the PCB board (8); the present invention has the advantages of higher versatility and stronger applicability, but the patent cannot solve the problem of rotational delay gap.

[0004] Patent CN201710329934.3 discloses an electronic fuel injection throttle valve, including a body and a throttle shaft, an ECU board and a motor installed on the body, wherein the ECU board is arranged in a containing chamber of the body, an intake air temperature sensor is installed at the throat inlet end of the body, and the intake air temperature sensor is connected to the ECU board, the throttle shaft passes through the throat, a magnet rocker arm is arranged at the lower end of the throttle shaft, a Hall sensor is arranged on the ECU board, a chip sensing center of the Hall sensor is coaxially arranged with a magnet of the magnet rocker arm and has a gap, an annular groove is also arranged on the ECU board, a suspension is connected to the shaft of the motor, and the magnet rocker arm passes through the annular groove and is connected to the suspension, but this patent cannot solve the problem of rotational delay gap. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and provide an electronic injection throttle body to solve the above-mentioned defects.

[0006] The object of the present invention is achieved through the following technical solutions: an electronic injection throttle body, comprising a body; a control drive mechanism is arranged at the lower end of the body, the output end of the control drive mechanism is connected to a throttle shaft actuating mechanism upward through an elastic pin mechanism, the throttle shaft actuating mechanism is located in the body, an injector mechanism is also arranged outside the body, the upper side end of the throttle shaft actuating mechanism is also connected to an adjustment mechanism, and the adjustment mechanism is located outside the upper end of the body; a connecting shell is arranged at the lower side of the body, a motor shell is arranged at the lower side of the connecting shell, the control drive mechanism includes a control system arranged in the connecting shell and a drive assembly arranged in the motor shell, and the drive assembly includes a motor integrated with the motor shell; the elastic pin mechanism includes 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 has a sliding pin protruding outward, an elastic member is arranged on the sliding pin, the outer end of the elastic member abuts against the inner side wall of the sliding pin seat, and the other pair of side surfaces of the sliding pin seat are adapted to the lower side end of the throttle shaft actuating mechanism.

[0007] Furthermore, a fixed groove and a sliding groove are provided on the suspension, the fixed groove is clamped with the output end of the motor, the sliding pin seat is slidably set in the sliding groove, the outer end of the elastic member is abutted against the inner wall of the sliding groove; the lower side end of the throttle shaft actuating mechanism is located in the sliding groove.

[0008] Furthermore, the throttle shaft actuating mechanism includes a rotating seat rotatably arranged on the lower side of the main body, a downward extending lever is fixed on the side circumferential surface of the rotating seat, the lever extends into the sliding pin seat, an upward extending throttle shaft is fixed to the center of the rotating seat, a throttle plate is movably arranged in the middle of the throttle shaft, a through hole is opened on the main body, the throttle plate is located in the middle of the through hole, and the throttle plate is used to control whether the two ends of the through hole are connected.

[0009] Furthermore, the fuel injector mechanism comprises a fuel injection nozzle, a sealing ring, an electronic control plug and a high-pressure fuel input quick-release connector, and the fuel injector mechanism is installed on the outside of the body.

[0010] Furthermore, the upper end of the main body is provided with an upwardly extending cylinder and a stop block, and the throttle shaft extends out of the main body through the cylinder; the adjustment mechanism includes a limit frame fixed to the upper end of the throttle shaft, a torsion spring is provided on the outer sleeve of the cylinder, one end of the limit frame is movably connected to the upper side end of the torsion spring, a stop column is screwed on the stop block, and the other end of the limit frame is movably abutted against the end face of the extended end of the stop column.

[0011] Furthermore, the motor housing has a downwardly recessed motor groove, the motor groove has a plurality of vertical ribs, the inner ends of the vertical ribs abut against the outer wall of the motor; the motor groove has two vertical screw sleeves, a fixing plate is fixed to the motor by bolts, and the extending ends of the bolts are screwed into the vertical screw sleeves.

[0012] Furthermore, the connecting shell and the motor shell are fixed by bolts and positioned by a plurality of first positioning pins; the connecting shell is provided with a second positioning pin extending upward, the main body is provided with a positioning hole, and the second positioning pin is adapted to the positioning hole.

[0013] Furthermore, the control system includes a PCB board fixed between the connecting shell and the motor shell, and the PCB board is electrically connected with a bus slot, a temperature sensor, a pressure sensor, a throttle opening position sensor, a circuit socket and a processing chip.

[0014] Furthermore, the outer side of the main body has a boss protruding outward, and a T-shaped pressure-taking hole is arranged in the main body. The lower side end of the T-shaped pressure-taking hole vertically extends to the bottom plate of the main body, and one side of the upper side end of the T-shaped pressure-taking hole extends laterally into the boss, and the other side extends to the inner cavity wall of the main body.

[0015] Furthermore, a water collection groove is provided on the upper side of the connecting shell, and the lower side end of the T-shaped pressure taking hole corresponds to the water collection groove.

[0016] Beneficial effects of the present invention: 1. The electronic fuel injection throttle body proposed by the present invention is convenient for restraining the slight rotation of the motor after installation in the motor housing and restraining the up and down movement of the motor by integrating the motor housing with the motor; the electronic fuel injection throttle body is convenient for blind installation in the later stage by integrating the motor housing with the motor;

[0017] 2. The present invention is installed in the suspension by means of the open elastic legs of the sliding pin seat itself, and the initial position is

[0018] The slide groove in the arm is limited so as to form an initial slot for the lever to enter during blind installation; at the same time, an arc surface is provided on the lever insertion side of the sliding pin seat so that the lever can be smoothly inserted during blind installation; when the lever is inserted into the suspension, the lever pushes the sliding pin seat to make it leave the initial position; when the motor rotates, it drives the suspension to rotate, at which time the return spring on the sliding pin is compressed, and the spring force acts on the sliding pin seat, and then acts on the lever, so that the sliding pin seat is always close to the lever during the rotation of the suspension, thereby eliminating the delay gap during the rotation process;

[0019] 3. The present invention places the lower side of the T-shaped pressure-taking hole outside, cuts and increases the meat on the throat of the body to form a convex platform, and increases the T-shaped pressure-taking hole.

[0020] The setting space of the pressure hole is set to a "T"-shaped cross pressure hole design that passes through the throat and horizontally passes through the throat. The setting of the T-shaped pressure hole can prevent the condensed water formed by the hot air after the cooling machine from sliding down into the pressure hole due to gravity, thereby preventing it from flowing into the pressure sensor and damaging the pressure sensor;

[0021] 4. The present invention sets a water storage tank at the position of the upper part of the shell and corresponding to the sensor, and the water storage tank in the T-shaped pressure hole

[0022] The water will be deposited in the water tank. When the engine is working, the water in the water tank is pumped out by the negative pressure of the engine through the T-type pressure taking hole, so as to avoid damage to the pressure sensor.

[0023] 5. The present invention places the regulating mechanism outside the main body, so that the electronic injection throttle body solves the problem of mechanical and electronic

[0024] The problem of not being able to share. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention;

[0026] Figure 3 is a front view of the present invention;

[0027] Figure 4 It is a schematic diagram of the internal structure of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the elastic pin mechanism;

[0029] Figure 6 It is a structural diagram of the suspension;

[0030] Figure 7 It is a structural schematic diagram of a sliding pin seat;

[0031] Figure 8 It is a structural diagram of the main body, connecting shell and motor shell;

[0032] Fig. 9 It is a cross-sectional view of the body.

[0033] In the figure, 1-body, 11-cylinder, 12-block, 13-torsion spring, 14-block column, 15-boss, 16-T-type pressure taking hole, 2-control drive mechanism, 3-valve shaft actuating mechanism, 31-rotating seat, 32-push rod, 33-throttle shaft, 34-throttle plate, 4-injector mechanism, 5-connecting shell, 51-second locating pin, 52-PCB board, 53-bus slot, 54-water trough, 6-motor shell, 61-vertical rib, 62-screw sleeve, 63-fixed plate, 64-first locating pin, 7-motor, 8-suspension, 81-fixed slot, 82-sliding slot, 9-sliding pin seat, 91-elastic support foot, 94-reset spring, 10-sliding pin. DETAILED DESCRIPTION

[0034] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0035] In this embodiment, Figures 1 to 9As shown, an electronic fuel injection throttle body comprises a body 1; a control drive mechanism 2 is arranged at the lower end of the body 1, and the output end of the control drive mechanism 2 is connected to a throttle shaft actuating mechanism 3 upward through an elastic pin mechanism, and the throttle shaft actuating mechanism 3 is located inside the body 1, and an injector mechanism 4 is also arranged outside the body 1, and the upper side end of the throttle shaft actuating mechanism 3 is also connected to an adjusting mechanism, and the adjusting mechanism is located outside the upper end of the body 1; a connecting shell 5 is arranged at the lower side of the body 1, and a motor shell 6 is arranged at the lower side of the connecting shell 5, and the control drive mechanism 2 comprises a control system arranged in a connecting shell 5 and a driving assembly arranged in a motor shell 6, wherein the driving assembly comprises a motor 7 integrated with the motor shell 6; the elastic pin mechanism comprises a suspension 8 inserted on the output end of the motor 7, wherein a sliding pin seat 9 is movably arranged in the suspension 8, wherein one side of the sliding pin seat 9 has a sliding pin 10 protruding outward, wherein an elastic member is arranged on the sliding pin 10, wherein the outer end of the elastic member abuts 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 adapted to the lower side end of the throttle shaft actuating mechanism 3.

[0036] In this embodiment, the sliding pin seat 9 is an integrated structure as a whole, and the upper side end of the sliding pin seat 9 has two elastic legs 91 extending upward; each edge of the sliding pin seat 9 is an arc structure; and the elastic member is a reset spring 94.

[0037] In this embodiment, the regulating mechanism is placed on the outside of the main body, so that the electronic fuel injection throttle body can adapt to both mechanical and electronic speed regulation methods. Since the regulating mechanism is placed on the top, the control system must be placed on the bottom or side. However, due to the limitation of the installation space of the throttle body on the whole vehicle, the side must be placed on the bottom. The integration of the motor 7 and the motor housing 6 is a solution to the problem of insufficient design area of ​​the PCB board when the bottom structure is used.

[0038] This embodiment is further configured as follows: a fixed groove 81 and a sliding groove 82 are provided on the suspension 8, the fixed groove 81 is clamped with the output end of the motor 7, the sliding pin seat 9 is slidably set in the sliding groove 82, and the outer end of the elastic member abuts against the inner wall of the sliding groove 82; the lower side end of the throttle shaft actuating mechanism 3 is located in the sliding groove 82.

[0039] In this embodiment, the upper end of the inner wall in the length direction of the sliding groove 82 has an inwardly protruding convex strip, and the outer end of the elastic support foot 91 is provided with a sliding groove, and the convex strip is adapted to the sliding groove; the lower side end of the sliding pin seat 9 also has two downwardly extending baffles, and the baffles and the bolts used to fix the motor 7 form a rotation position limit for the suspension 8.

[0040] The present embodiment is further configured as follows: the throttle shaft actuating mechanism 3 includes a rotating seat 31 rotatably arranged on the lower side of the main body 1, a lever 32 extending downward is fixed on the side circumferential surface of the rotating seat 31, the lever 32 extends into the sliding pin seat 9, a throttle shaft 33 extending upward is fixed at the center of the rotating seat 31, a throttle plate 34 is movably arranged in the middle of the throttle shaft 33, a through hole is opened on the main body 1, the throttle plate 34 is located in the middle of the through hole, and the throttle plate 34 is used to control whether the two ends of the through hole are connected.

[0041] In the above embodiment, the sliding pin seat 9 is installed in the suspension 8 through its own open elastic support foot 91, and the initial position is limited by the sliding groove in the cantilever, so that an initial slot is formed for the entry of the lever 32 during blind installation; at the same time, an arc surface is provided on the insertion side of the lever 32 of the sliding pin seat 9, so that the lever 32 can be smoothly inserted during blind installation; when the lever 32 is inserted into the suspension 8, the lever 32 pushes the sliding pin seat 9 to make it move out of the initial position; when the motor 7 rotates, it drives the suspension 8 to rotate, and at this time the return spring 94 on the sliding pin 10 is compressed, and the spring force acts on the sliding pin seat 9, and then acts on the lever 32, so that the sliding pin seat 9 is always close to the lever 32 during the rotation of the suspension 8, thereby eliminating the delay gap during the rotation process.

[0042] The present embodiment is further configured as follows: the fuel injector mechanism 4 includes a fuel injection nozzle, a sealing ring, an electronic control plug and a high-pressure fuel input quick-release connector, and the fuel injector mechanism 4 is installed on the outside of the body 1.

[0043] This embodiment is further configured as follows: the upper end of the body 1 is provided with an upwardly extending cylinder 11 and a stopper 12, and the throttle shaft 33 extends out of the body through the cylinder 11; the adjustment mechanism includes a limit frame 17 fixed to the upper end of the throttle shaft 33, the cylinder 11 is outerly provided with a torsion spring 13, one end of the limit frame 17 is movably connected to the upper side end of the torsion spring 13, a stopper 14 is screwed on the stopper 12, and the other end of the limit frame 17 is movably abutted against the end face of the extended end of the stopper 14.

[0044] This embodiment is further configured as follows: the motor housing 6 has a downwardly recessed motor groove, the motor groove has a plurality of vertical ribs 61, the inner ends of the vertical ribs 61 abut against the outer wall of the motor 7; the motor groove has two vertical screw sleeves 62, a fixing plate 63 is fixed to the motor 7 by bolts, and the extended ends of the bolts are screwed into the vertical screw sleeves 62.

[0045] In this embodiment, five vertical ribs 61 are provided in the motor housing 6 to fix the motor 7, so as to restrict the slight rotation of the motor 7 after being installed in the motor housing 6. A vertical screw sleeve 62 is provided and the motor 7 is installed in the motor housing 6 with a fixing plate 63 to restrict the up and down movement of the motor 7.

[0046] This embodiment is further configured as follows: the connecting shell 5 and the motor shell 6 are fixed by bolts and positioned by a plurality of first positioning pins 64; the connecting shell 5 has a second positioning pin 51 extending upward, and the main body 1 is provided with a positioning hole, and the second positioning pin 51 is adapted to the positioning hole.

[0047] In this embodiment, four first positioning pins 64 are arranged around the motor housing 6, and four positioning pin holes are arranged at corresponding positions of the connecting shell 5, which are used to accurately position the motor 7 and the motor housing 6 as a whole and assemble them with the connecting shell 5; through the setting of the second positioning pins 51 and the positioning holes, accurate positioning between the connecting shell 5 and the main body 1 is achieved, so that a relatively accurate positioning and assembly relationship is formed between the motor 7, the motor housing 6, the connecting shell 5 and the main body 1.

[0048] This embodiment is further configured as follows: the control system includes a PCB board 52 fixed between the connecting shell 5 and the motor shell 6, and the PCB board 52 is electrically connected to a bus slot 53, a temperature sensor, a pressure sensor, a throttle opening position sensor, a circuit socket and a processing chip.

[0049] In this embodiment, the electric signal processing unit of the motor 7 and the injector mechanism are both arranged on the PCB board 52; the motor housing 6 is also provided with a through opening, and the bus slot 53 corresponds to the through opening.

[0050] This embodiment is further configured as follows: the outer side of the main body 1 has a boss 15 protruding outward, and a T-shaped pressure-taking hole 16 is provided in the main body 1. The lower side end of the T-shaped pressure-taking hole 16 vertically extends to the bottom plate of the main body 1, and one side of the upper side end of the T-shaped pressure-taking hole 16 extends laterally into the boss 15, and the other side thereof extends to the inner cavity wall of the main body 1.

[0051] In this solution, since the control system is placed downward, the intake pressure sensor is also placed downward, so that the pressure taking hole connected to the sensor cannot be located at the upper end of the throttle body throat. Therefore, the position setting of the pressure taking hole becomes a technical difficulty. Two factors are considered when solving the setting of the pressure taking hole. First, the pressure taking hole must be located in the middle of the throat, and the direction of the pressure taking hole cannot be upward to avoid the condensed water formed by the hot air after the cooling machine sliding down into the pressure taking hole due to gravity, and then flowing into the pressure sensor to damage the pressure sensor; second, this project is generally applicable to throttle bodies with small diameter and small displacement. Based on the above two points, that is, if the pressure taking hole is directly passed from the sensor to the throat, the direction of the pressure taking hole will be upward. At the same time, if a throttle body with a smaller diameter is used, the pressure taking hole will not be able to pass through the throat if it is directly passed through the pressure taking hole. Therefore, in this embodiment, the lower side of the T-shaped pressure taking hole 16 is externalized, and a boss 15 is formed at the throat of the main body 1 to increase the setting space of the T-shaped pressure taking hole 16, so that it is designed as a "T"-shaped cross pressure taking hole that passes upward and horizontally passes through the throat. Through the setting of the T-shaped pressure taking hole 16, the condensed water formed by the hot air after the cooling machine is prevented from sliding down into the pressure taking hole due to gravity, thereby preventing it from flowing into the pressure sensor and damaging the pressure sensor.

[0052] The present embodiment is further configured as follows: a water collecting groove 54 is provided on the upper side of the connecting shell 5 , and the lower side end of the T-shaped pressure taking hole 16 corresponds to the water collecting groove 54 .

[0053] In this embodiment, the downward-placed type is used to solve the waterproof problem caused by the downward placement of the pressure sensor. In addition to adopting the design of a "T"-shaped cross pressure hole, so that the T-shaped pressure hole 16 is located in the upper middle part and faces downward to avoid the entry of water sources, a small amount of condensed water will still condense in the T-shaped pressure hole 16. This small amount of condensed water entering the T-shaped pressure hole 16 has the risk of damaging the sensor. On this basis, a water accumulation groove 54 is set at the upper part of the connecting shell 5 and corresponding to the position of the sensor. This small amount of water is deposited in the water accumulation groove 54. When the engine is working, the water in the water accumulation groove 54 is drawn out by the negative pressure of the engine through the T-shaped pressure hole 16.

[0054] Working principle of the present invention: When the engine is working, the control system automatically processes the air intake pressure sensor according to the change of engine load.

[0055] The signals of the sensor and the temperature sensor are used to control the rotation angle of the motor 7, and then the opening of the throttle plate 34 is adjusted through the motor 7. The signal of the opening change is transmitted to the control system through the opening position sensor, and then the injection amount of the injector mechanism 4 is adjusted to adapt to the size of the corresponding opening intake amount to ensure the economy of the fuel supply; the motor 7 drives the rotation of the throttle shaft 33, drives the suspension 8 to rotate, and then the torsion spring 13 contacts the limit frame 17 and is compressed. When the throttle shaft 33 rotates, the torsion spring 13 provides a rotational force.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. An electronic fuel injection throttle body, comprising a body (1), characterized in that: A control drive mechanism (2) is provided at the lower end of the body (1); an output end of the control drive mechanism (2) is connected to a throttle shaft actuating mechanism (3) upwards through an elastic pin mechanism; the throttle shaft actuating mechanism (3) is located inside the body (1); an injector mechanism (4) is also provided outside the body (1); an upper side end of the throttle shaft actuating mechanism (3) is also connected to an adjustment mechanism; the adjustment mechanism is located outside the upper end of the body (1); a connecting shell (5) is provided at the lower side of the body (1); a motor shell (6) is provided at the lower side of the connecting shell (5); the control drive mechanism (2) comprises a control system arranged in the connecting shell (5) and a drive assembly arranged in the motor shell (6); the drive assembly comprises a motor (7) arranged integrally 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) has a sliding pin (10) protruding outward, an elastic member is arranged on the sliding pin (10), the outer end of the elastic member abuts against the inner side wall of the sliding pin seat (9), and the other pair of side surfaces of the sliding pin seat (9) are adapted to the lower side end of the throttle shaft actuating mechanism (3); The upper side end of the sliding pin seat (9) has two elastic legs (91) extending upward, the elastic member is a return spring (94), and the sliding pin seat (9) is installed in the suspension (8) through its own open elastic legs (91); the suspension (8) is provided with a fixing groove (81) and a sliding groove (82), the fixing groove (81) is engaged with the output end of the motor (7), the sliding pin seat (9) is slidably arranged in the sliding groove (82), and the outer end of the elastic member abuts against the inner wall of the sliding groove (82); the lower side end of the throttle shaft actuating mechanism (3) is located in the sliding groove (82); the throttle shaft actuating mechanism (3) includes a rotating seat (31) rotatably arranged on the lower side of the body (1), a shifting rod (32) extending downward is fixed on the side circumferential surface of the rotating seat (31), and the shifting rod (32) extends into the sliding pin seat (9).

2. The electronic fuel injection throttle body according to claim 1, characterized in that: A throttle shaft (33) extending upward is fixed at the center of the rotating seat (31), a throttle plate (34) is movably arranged in the middle of the throttle shaft (33), a through hole is opened on the body (1), the throttle plate (34) is located in the middle of the through hole, and the throttle plate (34) is used to control whether the two ends of the through hole are connected.

3. The electronic fuel injection 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-release connector, and the fuel injector mechanism (4) is installed on the outside of the body (1).

4. The electronic fuel injection throttle body according to claim 2, characterized in that: The upper end of the body (1) is provided with a cylinder (11) and a stopper (12) extending upward, and the throttle shaft (33) extends out of the body through the cylinder (11); the adjustment mechanism comprises a limit frame (17) fixed to the upper end of the throttle shaft (33), a torsion spring (13) is provided on the outer sleeve of the cylinder (11), one end of the limit frame (17) is movably connected to the upper side end of the torsion spring (13), a stopper column (14) is screwed on the stopper (12), and the other end of the limit frame (17) is movably abutted against the end surface of the extended end of the stopper column (14).

5. The electronic fuel injection throttle body according to claim 1, characterized in that: The motor housing (6) has a motor slot recessed downwards, the motor slot has a plurality of vertical ribs (61), the inner ends of the vertical ribs (61) abut against the outer wall of the motor (7); the motor slot has two vertical screw sleeves (62), a fixing plate (63) is fixed to the motor (7) by bolts, and the extended ends of the bolts are screwed into the vertical screw sleeves (62).

6. The electronic fuel injection throttle body according to claim 1, characterized in that: The connection shell (5) and the motor shell (6) are fixed by bolts and positioned by a plurality of first positioning pins (64); the connection shell (5) has a second positioning pin (51) extending upward, the body (1) is provided with a positioning hole, and the second positioning pin (51) is adapted to the positioning hole.

7. The electronic fuel injection throttle body according to claim 1, characterized in that: The control system comprises a PCB board (52) fixed between a connection shell (5) and a motor shell (6); the PCB board (52) is electrically connected to a bus slot (53), a temperature sensor, a pressure sensor, a throttle opening position sensor, a circuit socket and a processing chip.

8. The electronic fuel injection throttle body according to claim 7, characterized in that: The outer side of the body (1) has a boss (15) protruding outward, and the body (1) is provided with a T-shaped pressure-taking hole (16). The lower side end of the T-shaped pressure-taking hole (16) extends vertically to the bottom plate of the body (1), and one side of the upper side end of the T-shaped pressure-taking hole (16) extends horizontally into the boss (15), and the other side extends to the inner cavity wall of the body (1).

9. The electronic fuel injection throttle body according to claim 8, characterized in that: A water collection groove (54) is provided on the upper side of the connection shell (5), and the lower side end of the T-shaped pressure taking hole (16) corresponds to the water collection groove (54).

Images