A connecting rod drive type engine throttle valve

Abstract

The utility model discloses a connecting rod drive type engine throttle valve relates to engine technical field, including throttle valve casing, the valve rod is rotationally connected in the casing, and the valve rod outside is installed the valve piece through the recess and bolt, one side of casing is equipped with rudder, and the rudder drive end is equipped with the driving cam, and the valve rod driven end is equipped with the driven cam, and both are rotationally connected through the connecting rod eccentric, to drive the synchronous rotation adjustment opening of valve rod and valve piece. The valve rod end is equipped with the limit baffle disc with the intercommunication limit groove, and the back of casing is equipped with the limit baffle pin of adaptation, realizes the accurate limit of valve piece stroke, and the oblique reservation channel is opened to the side portion of casing, and the built -in fuel solenoid valve can fully mix fuel to the air cavity and air. The utility model drives stably, and the adjustment is accurate, can reduce the wear and tear of part, promotes the engine power, fuel economy and operating stability.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and in particular to a connecting rod driven engine throttle valve. Background Technology

[0002] In the engine operating system, the throttle valve, as the core component controlling the intake air volume, directly affects the engine's power output, fuel economy, and emissions performance through its adjustment accuracy and response speed. Existing engine throttle valves mostly employ direct drive or simple linkage transmission structures, which suffer from large transmission clearances and insufficient adjustment accuracy. This easily leads to inaccurate valve opening control, causing an imbalance in the intake air-fuel ratio, and consequently affecting combustion efficiency. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model proposes a linkage-driven engine throttle valve.

[0004] This utility model proposes a linkage-driven engine throttle valve, including a throttle valve housing. A valve stem is rotatably connected inside the throttle valve housing, and a valve plate is mounted on the outside of the valve stem. A servo motor is mounted on one side of the throttle valve housing. An active cam is mounted on the driving end of the servo motor, and a driven cam is mounted on the driven end of the valve stem. A connecting rod is eccentrically rotatably connected between the active cam and the driven cam to drive the valve stem and the valve plate to rotate synchronously inside the throttle valve housing, thereby adjusting the opening degree of the valve plate.

[0005] Furthermore, the valve stem has a groove on its surface, and the valve plate is installed inside the groove by bolts.

[0006] Furthermore, a limit stop plate is installed at the end of the valve stem, and a first limit groove and a second limit groove are respectively opened at the bottom of the limit stop plate, and the first limit groove and the second limit groove are connected to each other.

[0007] Furthermore, a limit pin is installed on the back of the throttle body. The end of the limit pin is adapted to the first limit groove and the second limit groove. When the valve plate is closed, the end of the limit pin is located in the first limit groove. When the valve plate is at its maximum opening, the end of the limit pin is located in the second limit groove.

[0008] Furthermore, a reserved channel is provided on the side of the throttle body, the reserved channel is inclined and communicates with the air chamber inside the throttle body.

[0009] Furthermore, a fuel solenoid valve is installed inside the reserved channel to inject fuel into the gas chamber for thorough mixing with air.

[0010] The beneficial effects of this utility model are as follows: Through the eccentric transmission structure composed of a servo motor, an active cam, a driven cam, and a connecting rod, combined with a precise limit plate and limit pin design, and in conjunction with the inclined reserved channel and fuel solenoid valve, not only is stable and precise adjustment of the valve opening achieved, avoiding excessive wear of components, but also promoting full mixing of fuel and air, significantly improving the engine's power output, fuel economy, and operational stability. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the disassembled structure of this utility model; Figure 2 This is a schematic diagram of the valve stem and the limiting baffle in this utility model; Figure 3 This is a structural schematic diagram of the present invention from the front view after assembly; Figure 4 This is a structural schematic diagram of the present invention from the rear view after assembly; Figure 5 This is a half-sectional view of the assembled version of this utility model.

[0012] In the diagram: 1. Throttle body; 2. Valve stem; 21. Groove; 3. Valve plate; 4. Steering gear; 5. Driving cam; 6. Driven cam; 7. Connecting rod; 8. Limiting plate; 81. First limiting groove; 82. Second limiting groove; 9. Limiting pin; 10. Fuel solenoid valve; 11. Reserved channel. Detailed Implementation

[0013] Reference Figure 1-5 The present invention proposes a linkage-driven engine throttle valve, including a throttle valve housing 1, with a valve stem 2 rotatably connected inside the throttle valve housing 1. The valve stem 2 is a component that transmits driving force and drives the valve plate 3 to move. A groove 21 is provided on its surface. The valve plate 3 is fixedly installed in the groove 21 by bolts. This assembly method ensures that the valve plate 3 is firmly connected to the valve stem 2 and can rotate synchronously with the valve stem 2, thereby realizing precise adjustment of the throttle valve opening. To achieve power drive for valve stem 2 and valve plate 3, a servo motor 4 is fixedly installed on one side of throttle body 1. The servo motor 4 serves as a power output source, and its drive end is equipped with an active cam 5. Correspondingly, a driven cam 6 is installed on the driven end of valve stem 2. The active cam 5 and the driven cam 6 are eccentrically connected by a connecting rod 7. When the servo motor 4 is started, its drive end drives the active cam 5 to rotate. The active cam 5 transmits power to the driven cam 6 through the connecting rod 7, thereby driving valve stem 2 to rotate inside throttle body 1. Valve plate 3 rotates synchronously with valve stem 2. By changing the relative angle between valve plate 3 and the internal air chamber of throttle body 1, the throttle opening can be flexibly adjusted to adapt to the intake requirements of the engine under different operating conditions. To prevent the valve plate 3 from rotating beyond the design range and to ensure the safety of the device operation, a limit stop plate 8 is installed at the end of the valve stem 2. The bottom of the limit stop plate 8 is provided with a first limit groove 81 and a second limit groove 82 that are interconnected. A limit stop pin 9 is fixedly installed on the back of the throttle body 1. The end of the limit stop pin 9 is adapted to the shape of the first limit grooves 81 and 82. When the valve plate 3 is in the fully closed state, the end of the limit stop pin 9 is inserted into the first limit groove 81, which restricts the valve plate 3 from rotating further in the closing direction. When the valve plate 3 rotates to the maximum opening, the end of the limit stop pin 9 slides into the second limit groove 82, which prevents the valve plate 3 from continuing to rotate in the opening direction. The precise control of the movement stroke of the valve plate 3 is achieved through the mechanical limit structure. To optimize the mixing effect of fuel and air, a reserved channel 11 is provided on the side of the throttle body 1. The reserved channel 11 is inclined and its interior is connected to the air chamber of the throttle body 1. A fuel solenoid valve 10 is installed inside the reserved channel 11. During engine operation, the fuel solenoid valve 10 can precisely control the timing and amount of fuel injection according to the operating conditions. After the fuel is injected into the air chamber through the inclined reserved channel 11, it can form more complete convection and mixing with the air flowing through the air chamber, thereby improving combustion efficiency and enhancing engine power performance.

[0014] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A linkage-driven engine throttle valve, comprising a throttle valve housing (1), characterized in that, A valve stem (2) is rotatably connected inside the throttle body (1). A valve plate (3) is installed on the outside of the valve stem (2). A servo motor (4) is installed on one side of the throttle body (1). An active cam (5) is installed on the drive end of the servo motor (4). A driven cam (6) is installed on the driven end of the valve stem (2). A connecting rod (7) is eccentrically connected between the active cam (5) and the driven cam (6) to drive the valve stem (2) and the valve plate (3) to rotate synchronously inside the throttle body (1) and adjust the opening of the valve plate (3).

2. The linkage-driven engine throttle valve according to claim 1, characterized in that, The valve stem (2) has a groove (21) on its surface, and the valve plate (3) is installed inside the groove (21) by bolts.

3. The linkage-driven engine throttle valve according to claim 1, characterized in that, The valve stem (2) is equipped with a limit plate (8) at its end. The bottom of the limit plate (8) is provided with a first limit groove (81) and a second limit groove (82). The first limit groove (81) and the second limit groove (82) are connected.

4. The linkage-driven engine throttle valve according to claim 3, characterized in that, A limit pin (9) is installed on the back of the throttle body (1). The end of the limit pin (9) is adapted to the first limit groove (81) and the second limit groove (82). When the valve plate (3) is closed, the end of the limit pin (9) is located in the first limit groove (81). When the valve plate (3) is at its maximum opening, the end of the limit pin (9) is located in the second limit groove (82).

5. The linkage-driven engine throttle valve according to claim 1, characterized in that, The throttle body (1) has a reserved channel (11) on its side. The reserved channel (11) is inclined and communicates with the air chamber inside the throttle body (1).

6. The linkage-driven engine throttle valve according to claim 5, characterized in that, The reserved channel (11) is equipped with a fuel solenoid valve (10) to inject fuel into the gas chamber and mix it thoroughly with air.

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