Mounting structure for external valve bonnet of variable intake manifold of engine

Abstract

The utility model discloses a mounting structure of an external bonnet of a variable intake manifold of an engine, which comprises a fixed seat and a gland mounted at the upper end of the fixed seat, a vacuum nozzle is arranged inside the outer wall of the upper end of the gland, and a plurality of fastening bolts are arranged between the gland and the fixed seat to limit the position of the gland. An installation cavity is formed in the gland, a valve bonnet body is arranged in the installation cavity, through installation of the anti-vibration pad, strong vibration generated during operation of an engine can be effectively absorbed and buffered, and when vibration is transmitted to a bolt connection area, the anti-vibration pad can effectively absorb and buffer the engine through elastic deformation of the anti-vibration pad. Vibration energy is converted into internal energy to be consumed, so that the direct effect of vibration on the bolt is reduced, the risk of loosening of the bolt is reduced, meanwhile, the anti-vibration pad can buffer impact force caused by vibration, relative movement between parts is reduced, the abrasion degree is reduced, and the situation that the bolt is rusted due to rusting can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the related technical field of gas manifold external valve cap, concretely relates to a kind of installation structure of engine variable intake manifold external valve cap. BACKGROUND

[0002] Engine variable intake manifold external valve cap installation structure is a kind of mechanical structure specially used to install valve cap stably and accurately on the outside of engine variable intake manifold.The structure plays a key role for the normal operation and performance optimization of engine intake system.Variable intake manifold can provide suitable intake volume and intake velocity for engine under different working conditions by changing intake path and length,improve combustion efficiency and power output.And external valve cap is an important component in variable intake manifold control mechanism,its installation structure directly affects the working reliability and sealing of valve cap.

[0003] But strong vibration will be generated when engine operates, and this vibration will continuously act on external valve cap installation structure, although installation structure adopts bolt fastening, but long-time vibration can make bolt gradually loose, once bolt loosens, the connection between valve cap and installation base will become unstable, which can cause valve cap position to deviate, affect the normal control and sealing performance of valve. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of installation structure of engine variable intake manifold external valve cap to solve the problem that vibration will continuously act on external valve cap installation structure in the background technique mentioned above, although installation structure adopts bolt fastening, but long-time vibration can make bolt gradually loose.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of installation structure of engine variable intake manifold external valve cap, including fixed seat and gland installed on the upper end of fixed seat;

[0006] The upper end outer wall of the gland is provided with vacuum nozzle inside;

[0007] A plurality of fastening bolts are provided between the gland and the fixed seat to limit the position of the gland;

[0008] The inside of the gland is provided with an installation cavity, and the inside of the installation cavity is provided with a valve cap body;

[0009] A plurality of damping pads are provided between the fastening bolts and the gland.

[0010] Preferably, the upper and lower ends of the plurality of damping pads are provided with anti-skid layers, and the plurality of anti-skid layers are small blocks in convex shape.

[0011] Preferably, the plurality of damping pads are internally provided with reinforcing layers, and the plurality of reinforcing layers are metal nets.

[0012] Preferably, the plurality of damping pads are internally provided with reinforcing layers, and the plurality of reinforcing layers are metal nets.

[0013] Preferably, the plurality of damping pads are internally provided with reinforcing layers, and the plurality of reinforcing layers are metal nets.

[0014] Preferably, the plurality of damping pads are internally provided with reinforcing layers, and the plurality of reinforcing layers are metal nets.

[0015] Preferably, the plurality of damping pads are internally provided with reinforcing layers, and the plurality of reinforcing layers are metal nets.

[0016] Preferably, the plurality of damping pads are internally provided with reinforcing layers, and the plurality of reinforcing layers are metal nets.

[0017] Compared with the prior art, the utility model provides a kind of installation structure of engine variable intake manifold external valve cap, with following beneficial effects:

[0018] By installing damping pad, the existence of damping pad can effectively absorb and buffer the strong vibration generated when engine runs, when vibration is transmitted to bolt connection area, damping pad converts vibration energy into internal energy and consumes by the elastic deformation of itself, thereby reducing the direct action of vibration on bolt, reduce the risk of bolt loosening, damping pad can buffer impact force caused by vibration, reduce the relative movement between parts, thereby reduce the degree of wear, and can avoid the situation that bolt rusts dead due to rust. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a kind of installation structure structure schematic diagram of engine variable intake manifold external valve cap of the utility model.

[0020] Figure 2 It is a kind of valve cap area local structure schematic diagram of the utility model.

[0021] Figure 3 It is a kind of fastening bolt area front view local structure schematic diagram of the utility model.

[0022] Figure 4 It is a kind of damping pad area front view section local structure schematic diagram of the utility model.

[0023] In the figure: 1, mounting seat; 2, fixed seat; 3, fastening bolt; 4, gland; 5, mounting cavity; 6, vacuum nozzle; 7, valve stem; 8, limit block; 9, valve core; 10, valve cap main body; 11, damping pad; 12, anti-skid layer; 13, reinforcing layer; 14, clamping groove; 15, positioning block. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] The utility model provides a kind of installation structure of engine variable intake manifold external valve cap as shown in Figures 1-4 As shown in the figure, a kind of installation structure of engine variable intake manifold external valve cap, including fixed seat 2 and the gland 4 of being installed on the upper end of fixed seat 2;

[0026] The upper end outer wall of gland 4 is internally provided with vacuum nozzle 6;

[0027] A plurality of fastening bolts 3 are provided between gland 4 and fixed seat 2 to limit the position of gland 4;

[0028] The inside of gland 4 is provided with mounting cavity 5, and the inside of mounting cavity 5 is provided with valve cap main body 10, fixed seat 2 is used as base support, and gland 4 is installed on the upper end thereof, and the two are connected by a plurality of fastening bolts 3, the axial force generated by the tightening of fastening bolt 3 makes gland 4 tightly adhere to fixed seat 2, ensures that the position of gland 4 is stable, can resist the vibration and other factors when engine is running, prevents loosening or displacement, the mounting cavity 5 provided in the inside of gland 4 is matched with valve cap main body 10, valve cap main body 10 is installed therein, the inner wall of mounting cavity 5 is matched with the corresponding structure of valve cap main body 10 by specific protrusion or groove, and valve cap main body 10 is accurately positioned, to avoid shaking or deviation during work, the vacuum signal generated according to engine working condition is transmitted to the inside of valve cap main body 10 by vacuum nozzle 6 outside vacuum control system, and the opening degree or opening and closing state of valve is accurately controlled, under different working conditions such as high and low speed, respectively realize the functions such as enhancing intake vortex or ensuring sufficient air intake, and are tightly connected with intake manifold and prevent air leakage by sealing structure, ensure that air intake system works normally, and improve the comprehensive performance of engine;

[0029] A plurality of damping pads 11 are arranged between the plurality of fastening bolts 3 and the cover 4. During the operation of the engine, strong vibrations are generated, which are transmitted to the mounting structure of the valve cover through the intake manifold. The fastening bolts 3, as the key components connecting the cover 4 and the fixing base 2, directly bear the influence of the vibrations. The damping pads 11 have good elasticity and damping properties. When the vibrations are transmitted to the connecting part of the fastening bolt 3 and the cover 4, the damping pad 11 will be elastically deformed. The deformation can convert the mechanical energy of the vibration into heat energy, thereby effectively consuming and buffering the vibration energy.

[0030] As shown in Figure 3 and Figure 4 , the upper and lower ends of the plurality of damping pads 11 are provided with anti-skid layers 12. The plurality of anti-skid layers 12 are small blocks in a convex shape. The interiors of the plurality of damping pads 11 are provided with reinforcing layers 13. The plurality of reinforcing layers 13 are metal nets.

[0031] The anti-skid layers 12 increase the friction between the damping pads 11, the fastening bolts 3 and the cover 4, effectively preventing the displacement of the damping pads 11. The vibrations during the operation of the engine and the fastening force of the bolts will generate a large pressure and deformation force on the damping pads 11. The metal net as the reinforcing layer 13 has high strength and rigidity, and can share part of the pressure and deformation force borne by the damping pads 11.

[0032] As shown in Figure 3 and Figure 4 , the upper end of the plurality of damping pads 11 is provided with a clamping groove 14 which is open upward. The lower end of the plurality of fastening bolts 3 is provided with a positioning block 15 which is inserted into the clamping groove 14, so as to pre-position the damping pads 11 during installation. The plurality of damping pads 11 are made of rubber and fiber.

[0033] When it is necessary to install the damping pads 11 between the fastening bolts 3 and the cover 4, the operator only needs to align the positioning block 15 at the lower end of the fastening bolt 3 with the clamping groove 14 on the damping pad 11, and then insert the positioning block 15 into the clamping groove 14, so as to quickly and accurately determine the position of the damping pad 11 during installation, thereby greatly improving the installation efficiency. The rubber has good elasticity and can effectively absorb vibration energy and buffer the impact force generated during the operation of the engine. The fiber has high strength and modulus, and can enhance the overall structural strength of the damping pad 11.

[0034] As shown in Figure 2 , the lower end of the valve cover body 10 is fixedly connected with a valve core 9. The lower end of the valve core 9 is fixedly connected with a valve rod 7. The circular outer wall of the valve core 9 is fixedly connected with a limiting block 8.

[0035] The valve core 9 fixedly connected to the lower end outer wall of the valve cap body 10 and the valve rod 7 fixedly connected to the lower end outer wall of the valve core 9 jointly constitute a key component for accurately controlling the airflow in the intake manifold. When the engine is running, according to different working conditions, the signals transmitted by the vacuum nozzle 6 will act on the control mechanism inside the valve cap body 10, thereby driving the valve rod 7 to move. The movement of the valve rod 7 will be directly transmitted to the valve core 9. Since the valve core 9 is fixedly connected to the valve cap body 10, the valve core 9 will change its position in the intake manifold along with the movement of the valve rod 7, thereby controlling the on-off, flow rate and flow direction of the airflow in the intake manifold.

[0036] As shown in Figure 1 The mounting seat 1 is usually connected to the intake manifold of the engine or other related components by bolt connection, welding or other suitable fixing methods.

[0037] The mounting seat 1 is usually connected to the intake manifold of the engine or other related components by bolt connection, welding or other suitable fixing methods.

[0038] The principle of this embodiment is that the fixed seat 2 serves as a basic support, the gland 4 is installed on the upper end thereof, and the two are connected by a plurality of fastening bolts 3. The axial force generated by tightening the fastening bolts 3 makes the gland 4 tightly fit the fixed seat 2, ensuring the stability of the position of the gland 4 and resisting the vibration and other factors during engine operation to prevent loosening or displacement. The mounting cavity 5 formed in the interior of the gland 4 is adapted to the valve cap body 10, and the valve cap body 10 is installed therein. The inner wall of the mounting cavity 5 is matched with the corresponding structure of the valve cap body 10 through specific protrusions or grooves to accurately position the valve cap body 10, avoiding shaking or deviation during work. The vacuum signal generated by the engine working condition is transmitted to the interior of the valve cap body 10 through the vacuum nozzle 6 of the external vacuum control system, accurately controlling the opening degree or opening and closing state of the valve. Under different working conditions such as high and low speed, the functions of enhancing intake swirl or ensuring sufficient air intake are realized, respectively. The valve is tightly connected to the intake manifold and prevents air leakage through the sealing structure, ensuring the normal work of the intake system and improving the comprehensive performance of the engine. During the operation of the engine, strong vibration will be generated, which will be transmitted to the mounting structure of the valve cap through the intake manifold. As a key component connecting the gland 4 and the fixed seat 2, the fastening bolt 3 directly bears the influence of vibration. The vibration damping pad 11 has good elasticity and damping characteristics. When the vibration is transmitted to the connection part of the fastening bolt 3 and the gland 4, the vibration damping pad 11 will be elastically deformed. The deformation can convert the mechanical energy of the vibration into heat energy, thereby effectively consuming and buffering the vibration energy.

[0039] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. An engine variable intake manifold external valve cap mounting structure, comprising a fixed seat (2) and a gland (4) mounted on the upper end of the fixed seat (2); The upper end of the outer wall of the gland (4) is provided with a vacuum nozzle (6) inside; A plurality of fastening bolts (3) are arranged between the gland (4) and the fixed seat (2) to limit the position of the gland (4); The inside of the gland (4) is provided with a mounting cavity (5), and the inside of the mounting cavity (5) is provided with a valve cap body (10); characterized in that A plurality of damping pads (11) are arranged between the fastening bolts (3) and the gland (4).

2. The mounting structure of an engine variable intake manifold outer valve cap according to claim 1, characterized in that: The upper and lower ends of the outer wall of each of the plurality of damping pads (11) are provided with an anti-skid layer (12), and each of the plurality of anti-skid layers (12) is a small piece in a convex shape.

3. The mounting structure of an engine variable intake manifold outer valve cap according to claim 1, characterized in that: The inside of each of the plurality of damping pads (11) is provided with a reinforcing layer (13), and each of the plurality of reinforcing layers (13) is a metal mesh.

4. The mounting structure of an external valve cover of a variable intake manifold of an engine according to claim 1, characterized in that: The upper end of the outer wall of each of the plurality of damping pads (11) is provided with an upwardly open clamping groove (14), and the lower end of the outer wall of each of the plurality of fastening bolts (3) is provided with a positioning block (15) inserted into the clamping groove (14) to pre-position the damping pad (11) during installation.

5. The mounting structure of an external valve cover of a variable intake manifold of an engine according to claim 1, characterized in that: Each of the plurality of damping pads (11) is made of rubber and fiber.

6. The mounting structure of an external valve cover of a variable intake manifold of an engine according to claim 1, characterized in that: The lower end of the outer wall of the valve cap body (10) is fixedly connected with a valve core (9), and the lower end of the outer wall of the valve core (9) is fixedly connected with a valve rod (7).

7. The mounting structure of an engine variable intake manifold outer valve cap according to claim 6, characterized by: The circular outer wall of the valve core (9) is fixedly connected with a limiting block (8).

8. The mounting structure of an external valve cover of a variable intake manifold of an engine according to claim 1, characterized in that: The lower end of the outer wall of the fixed seat (2) is fixedly connected with a mounting seat (1).

Images