CN103233794A - Valve adjusting mechanism with groove structure - Google Patents

Abstract

A valve adjustment mechanism with a groove structure in the technical field of mechanical design, including: intake valve, exhaust valve, compressor, turbine, lever, tappet, volume cavity, moving body, strut and connecting pipe, moving The body is installed in the volume cavity and is in sealing contact with the inner wall of the volume cavity. There is a round hole on the upper wall of the volume cavity. The upper end of the strut is in contact with the lever. When the pressure in the intake pipe of the engine is high, the strut moves downward, and the lift of the intake valve becomes larger; when the pressure in the intake pipe of the engine is low, the strut moves upward, and the lift of the intake valve becomes small. The invention has reasonable design and simple structure, and is suitable for variable valve lift systems of engines.

Description

The valve adjustments mechanism that has groove structure

Technical field

What the present invention relates to is a kind of engine intake valve lift regulating system of mechanical designing technique, particularly a kind of valve adjustments mechanism that has groove structure.

Background technique

Traditional petrolic valve lift is fixing immutable, and just the cam profile of camshaft has only a kind ofly, and this has just caused this lift can not make motor all obtain good response in high velocity and low velocity zone.The valve lift of conventional gasoline machine motor is that the cam profile design is that the balance of motor under full operating mode selected, consequently motor both can not get best high speed efficient, also can not get best low speed torque, but obtained best balanced performance under the full operating mode.The employing of lift range variable makes motor can both be met the valve lift of demand in high velocity and low velocity zone, thereby improves high engine speeds power and low speed torque.

Find through the retrieval to the prior art document, China Patent No. application number 200910190522.1, patent name: a kind of hydraulic valve mechanism of lift range variable, this patented technology provides a kind of device of variable valve lift, can take into account the high and low rotating speed operating mode of motor preferably.But its design needs special control structure, whole system complex structure.

Summary of the invention

The present invention is directed to above-mentioned the deficiencies in the prior art, a kind of valve adjustments mechanism that has groove structure is provided, valve lift can realize continuous variable, and does not need special control mechanism.

The present invention is achieved through the following technical solutions, the present invention includes: cylinder, piston, cylinder head, intake duct, air outlet flue, intake valve, exhaust valve, the compressor air inlet machine pipe, gas compressor, engine air inlet tube, turbine exhaust pipe, turbine, engine exhaust pipe, lever, tappet, connecting tube, cavity volume, pole, moving body, triangular groove and spring, piston is installed in the space that cylinder surrounds and with the internal face sealing of cylinder and contacts, the air outlet of intake duct, the suction port of air outlet flue all is connected with cylinder head, the lower end surface of intake valve, the lower end surface of exhaust valve is all in the firing chamber, the air inlet/outlet of gas compressor respectively with the air outlet of compressor air inlet machine pipe, the suction port of engine air inlet tube is connected, the air outlet of engine air inlet tube is connected with the suction port of intake duct, the air inlet/outlet of turbine respectively with the air outlet of engine exhaust pipe, the suction port of turbine exhaust pipe is connected, the suction port of engine exhaust pipe is connected with the air outlet of air outlet flue, the two ends of lever respectively with the upper end of intake valve, the upper end of tappet is connected, the cross section of cavity volume is rectangular, moving body is installed in the cavity volume and with the internal face sealing of cavity volume and contacts, triangular groove is positioned at the top of moving body, the upper wall surface of cavity volume has a circular hole, the lower end of pole contacts with the inclined-plane of triangular groove after passing circular hole on the cavity volume upper wall surface, the upper end of pole contacts with lever, the two ends of connecting tube respectively with the left wall of cavity volume, engine air inlet tube is connected, and the right wall of moving body is connected with the right wall of cavity volume by spring.

In the present invention, moving body can be in cavity volume move left and right, pole can move up and down, the operation angle of lever can change along with moving up and down of pole.When the pressure in the engine air inlet tube was big, the cavity volume internal pressure in moving body left side was also bigger, and moving body moves right and compresses spring, thereby makes pole moving down, and it is big that the intake valve lift becomes.Pressure in engine air inlet tube hour, the cavity volume internal pressure in moving body left side is also less, moving body is moved to the left under the elastic reaction of spring, thereby makes pole moving up, the intake valve lift diminishes.

Compared with prior art, the present invention has following beneficial effect and is: the present invention is reasonable in design, and is simple in structure, can realize the continuous variable of valve lift, do not need special control mechanism again.

Description of drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is the structural representation of A-A section among Fig. 1;

Wherein: 1, cylinder, 2, piston, 3, cylinder head, 4, intake duct, 5, air outlet flue, 6, intake valve, 7, exhaust valve, 8, the compressor air inlet machine pipe, 9, gas compressor, 10, engine air inlet tube, 11, turbine exhaust pipe, 12, turbine, 13, engine exhaust pipe, 14, lever, 15, tappet, 16, connecting tube, 17, cavity volume, 18, pole, 19, moving body, 20, triangular groove, 21, spring.

Embodiment

Below in conjunction with accompanying drawing embodiments of the invention are elaborated, present embodiment is prerequisite with the technical solution of the present invention, provided detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.

Embodiment

As depicted in figs. 1 and 2, the present invention includes: cylinder 1, piston 2, cylinder head 3, intake duct 4, air outlet flue 5, intake valve 6, exhaust valve 7, compressor air inlet machine pipe 8, gas compressor 9, engine air inlet tube 10, turbine exhaust pipe 11, turbine 12, engine exhaust pipe 13, lever 14, tappet 15, connecting tube 16, cavity volume 17, pole 18, moving body 19, triangular groove 20 and spring 21, piston 2 is installed in the space that cylinder 1 surrounds and with the internal face sealing of cylinder 1 and contacts, the air outlet of intake duct 4, the suction port of air outlet flue 5 all is connected with cylinder head, the lower end surface of intake valve 6, the lower end surface of exhaust valve 7 is all in the firing chamber, the air inlet/outlet of gas compressor 9 respectively with the air outlet of compressor air inlet machine pipe 8, the suction port of engine air inlet tube 10 is connected, the air outlet of engine air inlet tube 10 is connected with the suction port of intake duct 4, the air inlet/outlet of turbine 12 respectively with the air outlet of engine exhaust pipe 13, the suction port of turbine exhaust pipe 11 is connected, the suction port of engine exhaust pipe 13 is connected with the air outlet of air outlet flue 5, the two ends of lever 14 respectively with the upper end of intake valve 6, the upper end of tappet 15 is connected, the cross section of cavity volume 17 is rectangular, moving body 19 is installed in the cavity volume 17 and with the internal face sealing of cavity volume 17 and contacts, triangular groove 20 is positioned at the top of moving body 19, the upper wall surface of cavity volume 17 has a circular hole, the lower end of pole 18 contacts with the inclined-plane of triangular groove 20 after passing circular hole on cavity volume 17 upper wall surfaces, the upper end of pole 18 contacts with lever 14, the two ends of connecting tube 16 respectively with the left wall of cavity volume 17, engine air inlet tube 10 is connected, and the right wall of moving body 19 is connected with the right wall of cavity volume 17 by spring 21.

In the present invention, moving body 19 can be in cavity volume 17 move left and right, pole 18 can move up and down, the operation angle of lever 14 can change along with moving up and down of pole 18.When the pressure in the engine air inlet tube 10 was big, cavity volume 17 internal pressures in moving body 19 left sides were also bigger, and moving body 19 moves right and compresses spring 21, thereby pole 18 is moved down, and it is big that the intake valve lift becomes.Pressure in engine air inlet tube 10 hour, cavity volume 17 internal pressures in moving body 19 left sides are also less, moving body 19 is moved to the left under the elastic reaction of spring 21, thereby pole 18 is moved up, the intake valve lift diminishes.

Claims (1)

1. A valve adjustment mechanism with groove structure, including cylinder (1), piston (2), cylinder head (3), intake passage (4), exhaust passage (5), intake valve (6 ), exhaust valve (7), compressor intake pipe (8), compressor (9), engine intake pipe (10), turbine exhaust pipe (11), turbine (12), engine exhaust pipe (13) , lever (14) and tappet (15), the piston (2) is installed in the space enclosed by the cylinder (1) and is in sealing contact with the inner wall of the cylinder (1), the air outlet of the air inlet (4), The intake ports of the exhaust passage (5) are connected to the cylinder head, the lower end surfaces of the intake valve (6) and the exhaust valve (7) are in the combustion chamber, and the air inlet and outlet ports of the compressor (9) are respectively It is connected with the air outlet of the compressor inlet pipe (8) and the air inlet of the engine air inlet pipe (10), the air outlet of the engine air inlet pipe (10) is connected with the air inlet of the air inlet (4), and the turbine ( The air inlet and outlet of 12) are respectively connected with the air outlet of the engine exhaust pipe (13) and the air inlet of the turbine exhaust pipe (11), and the air inlet of the engine exhaust pipe (13) is connected with the exhaust passage (5) The two ends of the lever (14) are respectively connected with the upper end of the intake valve (6) and the upper end of the tappet (15). It is characterized in that it also includes a connecting pipe (16), a volume chamber (17 ), a strut (18), a moving body (19), a triangular groove (20) and a spring (21), the volume cavity (17) has a rectangular cross section, and the moving body (19) is installed in the volume cavity (17) And it is in sealing contact with the inner wall of the volume chamber (17). The triangular groove (20) is located on the upper part of the moving body (19). There is a round hole on the upper wall of the volume chamber (17), and the lower end of the pole (18) passes through The round hole on the upper wall of the volume cavity (17) is in contact with the slope of the triangular groove (20), the upper end of the strut (18) is in contact with the lever (14), and the two ends of the connecting pipe (16) are respectively in contact with the volume The left wall of the cavity (17) is connected with the engine intake pipe (10), and the right wall of the moving body (19) is connected with the right wall of the volume cavity (17) by a spring (21).

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