CN105019964A - Segmented air inlet valve device of engine - Google Patents

Abstract

A segmented engine intake valve device belonging to the technical field of internal combustion engines, comprising an intake valve lower section, an intake valve middle section, an intake valve upper section, a control body, a fixed body, a through pipe, an elastic component, a rotating plate, a rotating shaft, The connecting pipe, the middle section of the intake valve passes through the rotating shaft, there are four cavities inside the rotating shaft, the middle section of the intake valve has four ribs, and the four ribs in the middle section of the intake valve are respectively arranged on the sides of the rotating shaft In the four cavities, the rotating block is connected to the top wall surface of the second through pipe through elastic components, one end of the connecting pipe is connected with the inner cavity of the control body, and the other end of the connecting pipe is connected with the engine intake pipe. In the present invention, when the pressure in the control body is high, the middle section of the intake valve rotates clockwise, the lift of the valve becomes larger, and the intake air volume of the engine becomes larger. The invention has reasonable design and simple structure, and is suitable for the design of the continuously variable system of the intake valve lift.

Description

Segmented engine intake valve arrangement

technical field

The invention belongs to the technical field of internal combustion engines, and in particular relates to a segmented engine intake valve device which can realize continuously variable lift of the intake valve on the principle of aerodynamics.

Background technique

The valve lift of the traditional gasoline engine is fixed and invariable, that is, there is only one cam profile of the camshaft, which makes it impossible for the lift to make the engine respond well in both high-speed and low-speed areas. The valve lift or cam profile design of a traditional gasoline engine is a balanced choice for the engine under all operating conditions. As a result, the engine can neither get the best high-speed efficiency nor the best low-speed torque, but it can get The most balanced performance under all working conditions. The adoption of variable valve lift enables the engine to obtain the required valve lift in both high-speed and low-speed areas, thereby improving the high-speed power and low-speed torque of the engine.

After searching the existing technical literature, it is found that the Chinese patent application number is 200910190522.1, and the patent name is: a hydraulic valve mechanism with variable valve lift. This patent technology provides a device with variable valve lift, which can better Taking into account the high and low speed conditions of the engine. But its design requires a special control structure, and the whole system structure is complex.

Contents of the invention

In order to overcome the disadvantages of the prior art, the invention provides a segmented engine intake valve device, which can realize continuous variable lift of the intake valve.

The present invention is achieved through the following technical proposals, the present invention comprises compressor intake pipe, compressor, engine intake pipe, cylinder block, cylinder head, engine exhaust pipe, turbine, turbine exhaust pipe, catalytic package, exhaust valve , intake valve lower section, intake valve middle section, intake valve upper section, control body, fixed body, first through pipe, second through pipe, elastic component, rotating block, rotating plate, connecting plate, rotating shaft, connecting pipe, The inlet and outlet of the compressor are respectively connected with the compressor inlet pipe and the engine inlet pipe, the inlet and outlet of the turbine are respectively connected with the engine exhaust pipe and the turbine exhaust pipe, and the engine inlet pipe and the engine exhaust pipe are connected with the cylinder block , the cylinder head is arranged on the cylinder block, the exhaust valve is arranged on the cylinder head, the catalytic package is arranged on the turbine exhaust pipe, the lower section of the intake valve and the middle section of the intake valve are consolidated together, and the top of the middle section of the intake valve has an outer Thread, the upper section of the intake valve has a groove inside and the groove has internal threads, the top of the middle section of the intake valve is connected with the upper section of the intake valve through a thread structure, the upper section of the intake valve and the control body are arranged on the cylinder head Inside, the fixed body is arranged in the control body and is consolidated with the inner wall surface of the control body. The first through-pipe and the second through-pipe are arranged on the fixed body. The cross-sectional area of the first through-pipe is smaller than that of the second through-pipe. Cross-sectional area, the rotating block is arranged in the second through pipe, one end of the rotating plate is fixed with the rotating block, the other end of the rotating plate extends into the first through pipe, the rotating shaft is arranged on the axis of the control body, the rotating plate, The connecting plate and the rotating shaft are consolidated together, the middle section of the intake valve passes through the rotating shaft, there are four cavities inside the rotating shaft, the middle section of the intake valve has four ribs, and the four ribs in the middle section of the intake valve The ribs are respectively arranged in the four cavities of the rotating shaft, the rotating block is connected with the top wall of the second through pipe through elastic components, one end of the connecting pipe is connected with the inner cavity of the control body, and the other end of the connecting pipe is connected with the engine The intake pipes are connected.

Further, in the present invention, the elastic component is a spring, and the cross sections of the fixed body, the first through pipe, the second through pipe, the rotating block, the rotating plate and the connecting plate are all rectangular.

The beneficial effects of the invention are: the invention has reasonable design and simple structure, and can realize continuously variable valve lift; the lift of the intake valve is small in low-speed working conditions and relatively large in high-speed working conditions.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Figure 2 is a partially enlarged view of Figure 1;

Fig. 3 is the cross-sectional view of control body among the present invention;

Fig. 4 is the structural representation of A-A section among Fig. 3;

Fig. 5 is the structural representation of B-B section among Fig. 3;

The labels in the accompanying drawings are respectively: 1. Compressor intake pipe, 2. Compressor, 3. Engine intake pipe, 4. Cylinder block, 5. Cylinder head, 6. Engine exhaust pipe, 7. Turbine, 8. Turbine Exhaust pipe, 9, catalytic package, 10, exhaust valve, 11, lower section of intake valve, 12, middle section of intake valve, 13, upper section of intake valve, 14, control body, 15, fixed body, 16, first Through pipe, 17, second through pipe, 18, elastic component, 19, rotating block, 20, rotating plate, 21, connecting plate, 22, rotating shaft, 23, connecting pipe.

Detailed ways

The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. This embodiment is based on the technical solution of the present invention, and provides detailed implementation methods and specific operating procedures, but the scope of protection of the present invention is not limited to the following embodiments. .

Example

Embodiment of the present invention is as shown in Fig. 1, and the present invention comprises compressor air intake pipe 1, air compressor 2, engine air intake pipe 3, cylinder block 4, cylinder head 5, engine exhaust pipe 6, turbine 7, turbine exhaust pipe 8 , catalytic package 9, exhaust valve 10, intake valve lower section 11, intake valve middle section 12, intake valve upper section 13, control body 14, fixed body 15, first through pipe 16, second through pipe 17, elastic component 18. Rotating block 19, rotating plate 20, connecting plate 21, rotating shaft 22, connecting pipe 23, the air inlet and outlet of compressor 2 are connected with compressor inlet pipe 1 and engine inlet pipe 3 respectively, and the inlet and outlet of turbine 7 are respectively connected with The engine exhaust pipe 6 and the turbine exhaust pipe 8 are connected, the engine intake pipe 3 and the engine exhaust pipe 6 are connected to the cylinder block 4, the cylinder head 5 is arranged on the cylinder block 4, and the exhaust valve 10 is arranged on the cylinder head 5, the catalytic package 9 is arranged on the turbine exhaust pipe 8, the intake valve lower section 11 and the intake valve middle section 12 are consolidated together, the top of the intake valve middle section 12 has an external thread, and the intake valve upper section 13 has a The groove has an internal thread, and the top of the middle section 12 of the intake valve is connected with the upper section 13 of the intake valve through a thread structure. The upper section 13 of the intake valve and the control body 14 are all arranged in the cylinder head 5, and the fixed body 15 is arranged in the control body 14 and is consolidated with the inner wall of the control body 14. The first through-pipe 16 and the second through-pipe 17 are both arranged on the fixed body 15. The cross-sectional area of the first through-pipe 16 is smaller than that of the first through-pipe 16 The cross-sectional area of the second through pipe 17, the rotating block 19 is arranged in the second through pipe 17, one end of the rotating plate 20 is fixed with the rotating block 19, and the other end of the rotating plate 20 extends into the first through pipe 16, The rotating shaft 22 is arranged on the axis of the control body 14. The rotating plate 20, the connecting plate 21 and the rotating shaft 22 are consolidated together. The middle section 12 of the intake valve passes through the rotating shaft 22. cavity, the middle section 12 of the intake valve has four ribs, and the four ribs of the middle section 12 of the intake valve are respectively arranged in the four cavities of the rotating shaft 22, the rotating block 19 passes through the elastic member 18 and the second through pipe 17 The top wall of the connecting pipe 23 is connected with the inner cavity of the control body 14, the other end of the connecting pipe 23 is connected with the engine intake pipe 3, the elastic member 18 is a spring, the fixed body 15, the first through pipe 16. The cross sections of the second through pipe 17, the rotating block 19, the rotating plate 20 and the connecting plate 21 are all rectangular.

In the present invention, there are four cavities inside the rotating shaft 22, and the middle section 12 of the intake valve has four ribs, and the four ribs of the middle section 12 of the intake valve are respectively arranged in the four cavities of the rotating shaft 22. , so that the middle section 12 of the intake valve can move up and down, and can also rotate together with the rotating shaft 22 . When the pressure in the engine intake pipe 3 is high, the pressure in the inner cavity of the control body 14 is also high, the rotating block 19 and the rotating plate 20 rotate clockwise together, and compress the elastic member 18 at the same time, then the rotating shaft 22 drives the intake valve The middle section 12 rotates clockwise, the lift of the intake valve becomes larger, and the intake air volume of the engine becomes larger. When the pressure in the intake pipe 3 of the engine is low, under the elastic action of the elastic member 18, the rotating shaft 22 drives the middle section 12 of the intake valve to rotate counterclockwise, and the lift of the intake valve becomes smaller.

Claims (2)

1. A segmented engine intake valve device, comprising compressor intake pipe (1), compressor (2), engine intake pipe (3), cylinder block (4), cylinder head (5), engine exhaust Pipe (6), turbine (7), turbine exhaust pipe (8), catalytic package (9), exhaust valve (10), the inlet and outlet of compressor (2) are respectively connected with compressor inlet pipe (1), engine The intake pipe (3) is connected, and the air inlet and outlet of the turbine (7) are connected with the engine exhaust pipe (6) and the turbine exhaust pipe (8) respectively, and the engine air intake pipe (3) and the engine exhaust pipe (6) are all Connected with the cylinder block (4), the cylinder head (5) is arranged on the cylinder block (4), the exhaust valve (10) is arranged on the cylinder head (5), and the catalytic package (9) is arranged on the turbine exhaust pipe ( 8), it is characterized in that it also includes the intake valve lower section (11), the intake valve middle section (12), the intake valve upper section (13), the control body (14), the fixed body (15), the first through pipe (16), second through pipe (17), elastic member (18), rotating block (19), rotating plate (20), connecting plate (21), rotating shaft (22), connecting pipe (23), air intake The lower section of the door (11) and the middle section of the intake valve (12) are solidified together, the top of the middle section of the intake valve (12) has an external thread, and the upper section of the intake valve (13) has a groove inside and an inner thread on the groove. thread, the top of the intake valve middle section (12) is connected with the intake valve upper section (13) through the thread structure, the intake valve upper section (13) and the control body (14) are arranged in the cylinder head (5), fixed The body (15) is arranged in the control body (14) and consolidated with the inner wall of the control body (14), the first through-pipe (16) and the second through-pipe (17) are arranged in the fixed body (15) Above, the cross-sectional area of the first through pipe (16) is smaller than the cross-sectional area of the second through pipe (17), the rotating block (19) is arranged in the second through pipe (17), and one end of the rotating plate (20) is connected to the The rotating block (19) is fixed together, the other end of the rotating plate (20) stretches in the first through pipe (16), the rotating shaft (22) is arranged on the axis of the control body (14), and the rotating plate (20) , the connecting plate (21), and the rotating shaft (22) are consolidated together, the middle section of the intake valve (12) passes through the rotating shaft (22), and there are four cavities inside the rotating shaft (22), and the intake valve The middle section (12) has four ribs, and the four ribs of the intake valve middle section (12) are respectively arranged in the four cavities of the rotating shaft (22), and the rotating block (19) is connected with the elastic part (18) The top wall of the second through pipe (17) is connected, one end of the connecting pipe (23) communicates with the inner cavity of the control body (14), and the other end of the connecting pipe (23) communicates with the engine intake pipe (3) . 2. The segmented engine intake valve device according to claim 1, characterized in that, the elastic member (18) is a spring, the fixed body (15), the first through pipe (16), the second The cross sections of the through pipe (17), the rotating block (19), the rotating plate (20), and the connecting plate (21) are all rectangular.