CN213510778U - Engine valve lift continuous variable mechanism - Google Patents
Engine valve lift continuous variable mechanism Download PDFInfo
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- CN213510778U CN213510778U CN202022747163.XU CN202022747163U CN213510778U CN 213510778 U CN213510778 U CN 213510778U CN 202022747163 U CN202022747163 U CN 202022747163U CN 213510778 U CN213510778 U CN 213510778U
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- valve
- adjusting
- rack
- pole
- rocker arm
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Abstract
The utility model relates to an internal-combustion engine technical field has provided continuous variable mechanism of engine valve lift, including drive unit, rocking arm, valve, regulation pole and regulating unit, adjust pole and rocking arm sliding connection, the rocking arm is around adjusting the pole swing, and drive unit is connected with the rocking arm, and the valve setting still includes the rack on the rocking arm, and the circumference of adjusting the pole is provided with the tooth of adaptation rack, and the rack sets up with adjusting the pole meshing, and regulating unit connects the regulation pole and drives the regulation pole and remove along the rack, adjusts the pole and has the degree of freedom along rack back and forth movement. The adjusting unit controls the adjusting rod to move along the rack, the position of the adjusting rod on the rocker arm is changed, the rocker arm drives the valve to move, the air input is controlled, the combustion is sufficient, the number of teeth moved by the adjusting rod is controlled, the movement is accurate and free of deviation, and the problems that in the prior art, the air input of an engine is too large at a low rotating speed, the air mixture is not uniform, the combustion is insufficient, the air input of a high rotating speed is too small, and the power output is small are solved.
Description
Technical Field
The utility model relates to an internal-combustion engine technical field especially relates to continuous variable mechanism of engine valve lift.
Background
The valve regulating mechanism in the prior art changes and regulates the position of a valve by controlling the change of the position of a tappet in a rocker arm, and the air inflow required by high rotating speed and low rotating speed is different.
Therefore, at present, a person skilled in the art needs to design a mechanism for continuously changing the lift of an engine valve, so that the air intake amount is accurate, the combustion is sufficient, and the working efficiency of the engine is improved.
SUMMERY OF THE UTILITY MODEL
The utility model provides an engine valve lift continuous variable mechanism has solved air input among the prior art and has had the deviation, the insufficient problem of burning.
The technical scheme of the utility model as follows:
continuous variable mechanism of engine valve lift, including drive unit, rocking arm, valve, regulation pole and regulating unit, adjust the pole with rocking arm sliding connection, the rocking arm winds adjust the pole swing, drive unit with the rocking arm is connected, the valve sets up on the rocking arm, still include the rack, the circumference of adjusting the pole is provided with the adaptation the tooth of rack, the rack with the tooth meshing sets up, the regulating unit is connected adjust pole and drive adjust the pole and follow the rack removes.
The adjusting rod is connected with the rocker arms and the racks, the racks are arranged on two sides of each rocker arm, and the racks are fixedly arranged on the toothed plates.
The adjusting unit comprises a motor and a worm, the worm is connected and arranged on a rotating shaft of the motor, and the worm is connected with the adjusting rod through a worm wheel.
The rocker arm is in sliding fit with the adjusting rod.
The driving unit comprises a cam, the cam is in sliding fit with the rocker arm, a first bearing is arranged on the rocker arm, and the cam is in linear sliding contact with the first bearing.
The adjusting rod is sleeved with a second bearing, and the rocker arm is in linear sliding contact with the second bearing.
The rocker arm is provided with a through hole, the valve is provided with an adjusting screw, the adjusting screw is sleeved in the through hole, and the adjusting screw is arranged on the rocker arm through a fixing nut.
The valve support is arranged between the adjusting screw and the valve, the lower end of the adjusting screw is of a hemispherical structure, a bowl-shaped structure matched with the lower end of the adjusting screw is arranged at the upper end of the valve support, and the valve is arranged at the lower end of the valve support in a contact mode.
The utility model discloses a theory of operation and beneficial effect do:
the utility model relates to an engine valve lift continuous variable mechanism, which comprises a driving unit, a rocker arm, a valve, an adjusting rod and an adjusting unit, the adjusting rod is connected with a rack, moves along the rack and has the freedom degree of reciprocating movement along the rack, the adjusting unit controls the adjusting rod to move along the rack, the position of the adjusting rod on the rocker arm is changed, the other end of the rocker arm drives the air discharging unit to move by utilizing the lever principle to control the air input so as to ensure that the combustion is sufficient, the number of teeth of the adjusting rod is controlled by the driving unit, so that the moving is accurate and has no deviation, the problems of overlarge low-rotating-speed air inflow, uneven air mixture, insufficient combustion, undersize high-rotating-speed air inflow and small power output of the engine in the prior art are solved, the emission is reduced, and the maximum power can be exerted at low, medium and high rotating speeds of the engine.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the connection of a plurality of rocker arms of the present invention;
in the figure: 1. the device comprises a rocker arm, 2, a valve, 3, an adjusting rod, 4, a rack, 5, a motor, 6, a worm, 7, a cam, 8 and a valve support.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work, are related to the scope of the present invention.
Example 1
As shown in fig. 1, the engine valve lift continuous variable mechanism comprises a driving unit, a rocker arm 1, a valve 2, an adjusting rod 3 and an adjusting unit, wherein the adjusting rod 3 is connected with the rocker arm 1 in a sliding mode, the rocker arm 1 swings around the adjusting rod 3, the driving unit is connected with the rocker arm 1, the valve 2 is arranged on the rocker arm 1, the engine valve lift continuous variable mechanism further comprises a rack 4, teeth adaptive to the rack 4 are arranged on the adjusting rod 3 in the circumferential direction, the rack 4 is meshed with the teeth, and the adjusting unit is connected with the adjusting rod 3 and drives the adjusting rod 3 to move along the.
In this embodiment, the both ends of rocking arm 1 are connected with regulation pole 3 and valve 2 respectively, regulation pole 3 moves along rack 4 under the drive of regulating unit, rack 4 fixed mounting is in the frame, adjust pole 3 and rocking arm 1 sliding connection, make rocking arm 1 around its swing when adjusting pole 3 and remove, drive valve 2 and reciprocate along the valve slot, according to the environment and the demand of locating of car, move the number of teeth of confirming along rack 4, drive the gassing unit and remove, make gaseous appropriate amount get into, burn, make the burning abundant, the number of teeth of confirming makes the gassing unit remove accurately, the air input does not have the deviation, reduce the wasting of resources, high rotational speed air input undersize, power output is little, reduce and discharge, make the engine low, in, high rotational speed can both exert maximum power.
As shown in fig. 1 to 2, the adjusting lever 3 is connected to a plurality of rocker arms 1 and racks 4, the racks 4 are disposed on both sides of any rocker arm 1, and the racks 4 are fixedly disposed on the toothed plate.
In this embodiment, the both sides of rocking arm 1 all are provided with rack 4, adjust pole 3 steady, accurate when removing, can not produce the skew and make the air input the deviation appear, and a plurality of racks 4 are fixed respectively on the pinion rack, and the pinion rack is fixed with the frame, avoids rack 4 to receive after the outside vibrations to produce the offset between each rack 4 for adjust the removal of pole 3 more accurate.
As shown in fig. 1, the adjusting unit includes a motor 5 and a worm 6, the worm 6 is connected to a rotating shaft of the motor 5, and the worm 6 is connected to the adjusting rod 3 through a worm wheel.
In this embodiment, motor 5 drives worm 5 and carries out forward or reverse rotation for adjust pole 3 and advance or retreat along rack 4 according to the rotation direction regulation pole 3 of motor under the drive of worm wheel, the tolerance of control valve 2, accurate degree is high.
As shown in fig. 1, the rocker arm 1 is slidably engaged with the adjustment lever 3.
In this embodiment, the rocker arm 1 is in sliding fit with the adjusting rod 3, and when the adjusting rod 3 moves along the rack 4, the rocker arm 1 swings around a contact point with the adjusting rod 3, and the rocker arm 1 performs composite motion under the action of the driving unit and the adjusting rod 3, so as to avoid interference with other parts.
As shown in fig. 1, the driving unit includes a cam 7, the cam 7 is slidably engaged with the rocker arm 1, a first bearing is provided on the rocker arm 1, and the cam 7 is in linear sliding contact with the first bearing.
In this embodiment, the cam 7 is connected with the rocker arm 1 through the first bearing, when the cam 7 rotates, the first bearing is in linear contact with the cam 7 all the time, the position of the rocker arm 1 moves, the rocker arm 1 is matched with the adjusting rod 3 to drive the valve 2 to move, the air inflow is changed, the first bearing reduces the friction between the cam 7 and the rocker arm 1, the service lives of the cam 7 and the rocker arm 1 are prolonged, and the resource waste is reduced.
As shown in fig. 1, the adjustment lever 3 is fitted with a second bearing, and the rocker arm 1 is in linear sliding contact with the second bearing.
In this embodiment, the second bearing reduces the friction between the rocker arm 1 and the adjusting rod 3, avoids the adjusting rod 3 and the rocker arm 1 from being easily worn and deformed when working for a long time, and prolongs the service life of the adjusting rod 3 and the rocker arm 1.
As shown in figure 1, a through hole is formed in the rocker arm 1, an adjusting screw is arranged on the valve 2, the adjusting screw is sleeved in the through hole, and the adjusting screw is arranged on the rocker arm 1 through a fixing nut.
In this embodiment, the valve 2 is fixed to the rocker arm 1 by an adjusting screw and a fixing nut, and the clearance of the valve 2 can be changed by the fastening position of the adjusting screw and the fixing nut, so that the engine achieves the optimal effect.
As shown in fig. 1, a valve support 8 is arranged between the adjusting screw and the valve 2, the lower end of the adjusting screw is a hemispherical structure, a bowl-shaped structure matched with the lower end of the adjusting screw is arranged at the upper end of the valve support 8, and the valve 2 is arranged at the lower end of the valve support 8 in a contact manner.
In this embodiment, the adjusting screw lower extreme sets up to spherical structure, is provided with the bowl structure's of adaptation recess with it on the valve support 8, when making 1 motion in-process of rocking arm drive the adjusting screw motion, and the adjusting screw drives 8 vertical removal in the valve support, and the valve holds in the palm 8 effectual rocking arm 1 of having avoided takes place the skew.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. Continuous variable mechanism of engine valve lift, including drive unit, rocking arm (1), valve (2), regulation pole (3) and regulating unit, adjust pole (3) with rocking arm (1) sliding connection, rocking arm (1) winds adjust pole (3) swing, drive unit with rocking arm (1) is connected, valve (2) set up on rocking arm (1), its characterized in that still includes rack (4), the circumference of adjusting pole (3) is provided with the adaptation the tooth of rack (4), rack (4) with the tooth meshing sets up, regulating unit connects adjust pole (3) and drive adjust pole (3) are followed rack (4) remove.
2. The mechanism of claim 1, wherein the adjusting rod (3) is connected with a plurality of rocker arms (1) and racks (4), the racks (4) are arranged on two sides of any rocker arm (1), and the racks (4) are fixedly arranged on toothed plates.
3. The mechanism of the continuously variable lift of the engine valve according to claim 1, characterized in that the adjusting unit comprises a motor (5) and a worm (6), the worm (6) is connected and arranged on a rotating shaft of the motor (5), and the worm (6) is connected with the adjusting rod (3) through a worm gear.
4. The engine valve lift continuously variable mechanism according to claim 1, characterized in that the rocker arm (1) is in sliding engagement with the adjusting lever (3).
5. The engine valve lift continuously variable mechanism according to claim 4, characterized in that the drive unit comprises a cam (7), the cam (7) is in sliding fit with the rocker arm (1), a first bearing is arranged on the rocker arm (1), and the cam (7) is in linear sliding contact with the first bearing.
6. The mechanism of continuously variable lift of engine valve according to claim 4, characterized in that the adjusting lever (3) is sleeved with a second bearing, and the rocker arm (1) is in linear sliding contact with the second bearing.
7. The engine valve lift continuous variable mechanism according to claim 1, characterized in that a through hole is arranged on the rocker arm (1), an adjusting screw is arranged on the valve (2), the adjusting screw is sleeved in the through hole, and the adjusting screw is arranged on the rocker arm (1) through a fixing nut.
8. The mechanism of the continuously variable lift range of the engine valve according to claim 7, characterized in that a valve support (8) is arranged between the adjusting screw and the valve (2), the lower end of the adjusting screw is of a hemispherical structure, the upper end of the valve support (8) is provided with a bowl-shaped structure matched with the lower end of the adjusting screw, and the lower end of the valve support (8) is provided with the valve (2) in a contact manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022747163.XU CN213510778U (en) | 2020-11-24 | 2020-11-24 | Engine valve lift continuous variable mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022747163.XU CN213510778U (en) | 2020-11-24 | 2020-11-24 | Engine valve lift continuous variable mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213510778U true CN213510778U (en) | 2021-06-22 |
Family
ID=76425919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022747163.XU Active CN213510778U (en) | 2020-11-24 | 2020-11-24 | Engine valve lift continuous variable mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213510778U (en) |
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2020
- 2020-11-24 CN CN202022747163.XU patent/CN213510778U/en active Active
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