CN109653831A - A kind of continuous variable valve lift device - Google Patents
A kind of continuous variable valve lift device Download PDFInfo
- Publication number
- CN109653831A CN109653831A CN201910004697.2A CN201910004697A CN109653831A CN 109653831 A CN109653831 A CN 109653831A CN 201910004697 A CN201910004697 A CN 201910004697A CN 109653831 A CN109653831 A CN 109653831A
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- China
- Prior art keywords
- valve
- intermediate rockers
- component
- connecting rod
- bent connecting
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- 238000000034 method Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 7
- 241000237858 Gastropoda Species 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 2
- 241001416181 Axis axis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001718 repressive effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0021—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of rocker arm ratio
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The present invention relates to one kind to be related to piston-mode motor air distributing device, especially a kind of variable valve lift device.The continuous variable valve lift device of one of present invention, including stepper motor and screw arbor assembly, bent connecting rod component, cam, intermediate rockers component, valve rocker, valve assembly and air inlet pipe；Stepper motor is connected with screw arbor assembly with bent connecting rod component, bent connecting rod component is connected with intermediate rockers component, cam is arranged on the right side of intermediate rockers component, drives intermediate rockers component movement, valve rocker is arranged in intermediate rockers component lower part, valve rocker is connected with valve assembly, and valve assembly lower part is connected with air inlet pipe.Increase an intermediate rockers method come change opening and closing valve by way of, flexible operation is easy to use.
Description
Technical field
The present invention relates to one kind to be related to piston-mode motor air distributing device, especially a kind of variable valve lift device.
Background technique
Variable valve timing and the distribution technology of changeable air valve stroke are the essential technical requirements of engine art, existing
Technology is to be substantially as two objects with more than two independent to variable valve timing and changeable air valve stroke
Mechanism come what is controlled respectively, this makes, and engine structure becomes complicated and manufacturing cost rises.
Summary of the invention
In order to solve the shortcomings of the prior art, the present invention provides a kind of methods for increasing an intermediate rockers to change
Become the variable valve lift device of opening and closing valve mode.
The continuous variable valve lift device of one of present invention, including stepper motor and screw arbor assembly, bent connecting rod group
Part, cam, intermediate rockers component, valve rocker, valve assembly and air inlet pipe；Stepper motor and screw arbor assembly and bent connecting rod group
Part is connected, and bent connecting rod component is connected with intermediate rockers component, and cam is arranged on the right side of intermediate rockers component, drives intermediate rockers
Component movement, valve rocker be arranged in intermediate rockers component lower part, valve rocker is connected with valve assembly, valve assembly lower part and
Air inlet pipe is connected；
Stepper motor and screw arbor assembly include screw rod and stepper motor, and screw rod is rotatably mounted on stepper motor；
Bent connecting rod component includes swivel nut, bent connecting rod and axle sleeve, and swivel nut is connected by screw thread with screw rod, and bent connecting rod one end can
Rotation be connected with swivel nut, the other end is rotatably connected with axle sleeve；
Intermediate rockers component includes intermediate rockers, rocker arm slide plate, roller, torsionspring and push-pull rod, and torsionspring is in making
Between rocker arm and cam contact, the top annulus of push-pull rod rotationally covers on the rotor journal of intermediate rockers, in intermediate rockers
Equipped with slot is run through with what push-pull rod cooperated, intermediate rockers are rotatably mounted on axle sleeve, and roller, push-and-pull are equipped on the right side of push-pull rod
It is connected in the middle part of bar lower part and rocker arm slide plate, is hinged in intermediate rockers on the left of rocker arm slide plate.
Increase an intermediate rockers method come change opening and closing valve by way of, by being linked on rotor journal
Push-pull rod controls the rotatable rocker arm slide plate in intermediate rockers, and rocker arm nose is a rotatable pivot circle,
As basic circle, when valve-closing, the roller on valve rocker is rested on the benchmark round surface, by covering on rotor journal
Push-pull rod control the tail in intermediate rockers, drive the tail to stretch from intermediate rockers when pivoting around slide plate
Out or pack up, reach control tail and by between the roller wheel on driving valve rocker relative position and angle change
Purpose is pushed on valve rocker when cam pushes intermediate rockers sliding with tail telescopic in intermediate rockers again
Roller is opened and closed valve, is not only to reach while controlling continuous variable valve timing and continuous variable gas with the direct proportion method of synchronization
Door lift purpose, it is often more important that valve is controlled with the variation around the tail of slide plate pivot circle rotation, tail
Variation plays the role of the blistering width of similar variable cam head, has reached under different rotating speeds, has both met variable into row
Valve superposition amount, realize again changeable air valve can not only open in advance while but also can late release, this mode, which can change, persistently to be opened
Open the variable valve timing under temporal meaning.
Preferably, bent connecting rod one end is hinged and connected with swivel nut, the other end and axle sleeve are hinged and connected.Structure is simple, warp
It is durable long.
Preferably, valve assembly includes nut, valve spring and valve, valve spring is wound around on valve, on valve
Portion is fixed on valve rocker by nut.It is at low cost, maintenance convenient for safeguarding.
Beneficial effects of the present invention: when the vehicle runs at a high speed, needing stronger power, at this time stepper motor band movable snail sleeve
Screw rod lower end is moved to, the rotor journal of bent connecting rod and intermediate rockers axis rotates counterclockwise, and eccentric shaft obtains push-pull rod top
Move down so that rocker arm slide plate is stretched out from intermediate rockers, at this time the position of valve rocker relatively on the lower, so when cam pushes away
Dynamic intermediate rockers, when driving valve opening, since distance reduces, valve opening becomes faster, while the amplitude of opening also becomes larger；
When low vehicle speeds, too strong power is not needed, but needs to consider to reduce oil consumption.Motor band movable snail sleeve is transported at this time
Screw rod upper end is moved, the rotor journal of bent connecting rod and intermediate rockers axis rotates clockwise, and the eccentric diameter of axle is by sliding push-pull bar
It pushes up to move up, so that rocker arm slide plate is packed up from intermediate rockers.The position of valve rocker is relatively top at this time, so when convex
Wheel pushes intermediate rockers, and when valve rocker being driven to open valve, since distance increases, valve opening is slack-off, while opening amplitude
Also become smaller.
Detailed description of the invention
Fig. 1 is stepping motor structure schematic diagram.
Fig. 2 is that stepper motor and screw arbor assembly move schematic diagram.
Fig. 3 is bent connecting rod component movement schematic diagram.
Fig. 4 is slide push-pull rod structure schematic diagram.
Fig. 5 is slide push-pull rod structure schematic diagram.
Fig. 6 is high vehicle speeds work status schematic diagram.
Fig. 7 is low vehicle speeds work status schematic diagram.
Marked in the figure: 1, stepper motor and screw arbor assembly, 11, screw rod, 12, stepper motor, 2, bent connecting rod component, 21,
Swivel nut, 22, bent connecting rod, 23, axle sleeve, 3, cam, 4, intermediate rockers component, 41, intermediate rockers, 42, rocker arm slide plate, 43, rolling
Son, 44, push-pull rod, 5, valve rocker, 51, torsionspring, 6, valve assembly, 61, nut, 62, valve spring, 63, valve,
7, air inlet pipe.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, but this should not be interpreted as to above-mentioned theme of the invention
Range be only limitted to above-described embodiment.
As shown in Figure 1, a kind of continuous variable valve lift device, including stepper motor and screw arbor assembly 1, bent connecting rod group
Part 2, cam 3, intermediate rockers component 4, valve rocker 5, valve assembly 6 and air inlet pipe 7；Stepper motor and screw arbor assembly 1 with it is curved
Bent link assembly 2 is connected, and bent connecting rod component 2 is connected with intermediate rockers component 4, and the setting of cam 3 is right in intermediate rockers component 4
Side drives intermediate rockers component 4 to move, and valve rocker 5 is arranged in 4 lower part of intermediate rockers component, valve rocker 5 and valve assembly
6 are connected, and 6 lower part of valve assembly is connected with air inlet pipe 7；
Stepper motor and screw arbor assembly 1 include screw rod 11 and stepper motor 12, and screw rod 11 is rotatably mounted on stepper motor 12
On；
Bent connecting rod component 2 includes swivel nut 21, bent connecting rod 22 and axle sleeve 23, and swivel nut 21 is connected by screw thread with screw rod 11, curved
Bent 22 one end of connecting rod is hinged and connected with swivel nut 21, the other end and axle sleeve 23 are hinged and connected；
Intermediate rockers component 4 includes intermediate rockers 41, rocker arm slide plate 42, roller 43, torsionspring and push-pull rod 44, torsionspring
For contacting intermediate rockers 41 with cam 3, the top annulus of push-pull rod 44 rotationally covers the eccentric shaft in intermediate rockers 41
On neck, intermediate rockers 41, which are equipped with, runs through slot with what push-pull rod 44 cooperated, and intermediate rockers 41 are rotatably mounted on axle sleeve 23,
It is equipped with roller 43 on the right side of push-pull rod 44, is connected in the middle part of 44 lower part of push-pull rod and rocker arm slide plate 42, is hinged on the left of rocker arm slide plate 42
In intermediate rockers 41；
Valve assembly 6 includes nut 61, valve spring 62 and valve 63, and valve spring 62 is wound around on valve 63, on valve 63
Portion is fixed on valve rocker 5 by nut 61.
As shown in Fig. 2, stepper motor 12 drive screw rod 11 rotate, screw rod 11 with movable snail sleeve 21 on screw rod 11 before move back
It is dynamic；
As shown in figure 3, the rotation of mobile drive bent connecting rod 22 of the swivel nut 21 on screw rod 11, bent connecting rod 22 passes through axle sleeve 23
On the footstalk of intermediate rockers 41, the rotation for being converted into intermediate rockers 41 of bent connecting rod 22；
As shown in figure 4, intermediate rockers axis is connected with push-pull rod 44, the top annulus of push-pull rod 44 is actively covered in intermediate rockers axis
Rotor journal on, the up and down motion for being converted into push-pull rod 44 of intermediate rockers axis, during slide push-pull bar is slidably disposed in
Between rocker arm among the slot；44 lower hinge of push-pull rod is on the slide plate tail of rocker arm slide plate 42, and rocker arm slide plate 42 is through pivot thereon
Axis axis hole actively covers on pin shaft, and pin shaft is fixed on 41 lower part of intermediate rockers, and the up and down motion of push-pull rod 44 can adjust
Rocker arm slide plate 42 is stretched out or is packed up from intermediate rockers；
As shown in figure 5, the torsionspring being arranged on intermediate rockers axis is crimped in intermediate rockers and makes the rolling in intermediate rockers
It is sub with the cam is repressive contacts.Rocker arm slide plate is contacted with valve rocker, and the position of rocker arm slide plate influences the position of valve rocker
It sets.Intermediate rockers are pushed by cam, then drive valve rocker to be opened and closed valve in sliding manner by controllable intermediate rockers, thus
Control valve stroke and valve timing.
As shown in fig. 6, when the vehicle runs at a high speed, needing stronger power, stepper motor 12 is transported with movable snail sleeve 21 at this time
11 lower end of screw rod is moved, bent connecting rod 22 and the rotor journal of intermediate rockers axis rotate counterclockwise, and eccentric shaft is by push-pull rod 44
Push up to move down so that rocker arm slide plate 42 is stretched out from intermediate Rocker arm 41, at this time the position of valve rocker relatively on the lower, so
When cam 3 pushes intermediate rockers, and valve 63 is driven to open, unlatching amplitude is also become larger；
As shown in fig. 7, not needing too strong power when low vehicle speeds, but need to consider to reduce oil consumption.Motor at this time
Band movable snail sleeve moves to screw rod upper end, and the rotor journal of bent connecting rod and intermediate rockers axis rotates clockwise, and the eccentric diameter of axle will
Sliding push-pull bar top must move up, so that rocker arm slide plate is packed up from intermediate rockers.The position of valve rocker is opposite at this time leans on
On, so when valve rocker being driven to open valve, unlatching amplitude also becomes smaller when cam pushes intermediate rockers.
So-called controllable intermediate rockers, refer to by being controlled in intermediate rockers by the push-pull rod being linked on rotor journal
Rotatable rocker arm slide plate, rocker arm nose is a rotatable pivot circle, as basic circle, when valve-closing,
Roller on valve rocker rests on the benchmark round surface, controls intermediate rockers by covering the push-pull rod on rotor journal
On tail, drive tail to stretch out or pack up from intermediate rockers when pivoting around slide plate, reach control slide plate
Tail portion and by between the roller wheel on driving valve rocker relative position and angle change purpose, shaken when cam pushes centre
When arm slides, pushes the roller on valve rocker again with tail telescopic in intermediate rockers to be opened and closed valve, be not only
Reach while continuous variable valve timing and continuously variable valve lift purpose controlled with the direct proportion method of synchronization, it is often more important that
Valve is controlled with the variation around the tail of slide plate pivot circle rotation, the variation of tail plays similar variable cam
The effect of the blistering width of head, has reached under different rotating speeds, has not only met variable inlet and exhaust valve superposition amount, but also realizing can
Air valve variation can not only open in advance while but also can late release, this mode can change the changeable air valve under lasting opening time meaning
Timing.
Claims (3)
1. a kind of continuous variable valve lift device, including stepper motor shake with screw arbor assembly, bent connecting rod component, cam valve
Arm, valve assembly and air inlet pipe；Stepper motor is connected with screw arbor assembly with bent connecting rod component, which is characterized in that in further including
Between rocker arm assembly, bent connecting rod component is connected with intermediate rockers component, among cam is arranged on the right side of intermediate rockers component, drives
Rocker arm assembly movement, valve rocker are arranged in intermediate rockers component lower part, and valve rocker is connected with valve assembly, under valve assembly
Portion is connected with air inlet pipe；
Stepper motor and screw arbor assembly include screw rod and stepper motor, and screw rod is rotatably mounted on stepper motor；
Bent connecting rod component includes swivel nut, bent connecting rod and axle sleeve, and swivel nut is connected by screw thread with screw rod, and bent connecting rod one end can
Rotation be connected with swivel nut, the other end is rotatably connected with axle sleeve；
Intermediate rockers component includes intermediate rockers, rocker arm slide plate, roller, torsionspring and push-pull rod, and torsionspring is in making
Between rocker arm and cam contact, the top annulus of push-pull rod rotationally covers on the rotor journal of intermediate rockers, in intermediate rockers
Equipped with slot is run through with what push-pull rod cooperated, intermediate rockers are rotatably mounted on axle sleeve, and roller, push-and-pull are equipped on the right side of push-pull rod
It is connected in the middle part of bar lower part and rocker arm slide plate, is hinged in intermediate rockers on the left of rocker arm slide plate.
2. a kind of continuous variable valve lift device according to claim 1, which is characterized in that bent connecting rod one end and spiral shell
Set is hinged and connected, the other end and axle sleeve are hinged and connected.
3. a kind of continuous variable valve lift device according to claim 1, which is characterized in that valve assembly includes spiral shell
Female, valve spring and valve, valve spring are wound around on valve, and valve top is fixed on valve rocker by nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910004697.2A CN109653831A (en) | 2019-01-03 | 2019-01-03 | A kind of continuous variable valve lift device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910004697.2A CN109653831A (en) | 2019-01-03 | 2019-01-03 | A kind of continuous variable valve lift device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109653831A true CN109653831A (en) | 2019-04-19 |
Family
ID=66118741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910004697.2A Pending CN109653831A (en) | 2019-01-03 | 2019-01-03 | A kind of continuous variable valve lift device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109653831A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302754A (en) * | 2019-07-29 | 2021-02-02 | 舍弗勒技术股份两合公司 | Intermediate rocker arm and valve rocker arm system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005180401A (en) * | 2003-12-24 | 2005-07-07 | Honda Motor Co Ltd | Valve lift variable device of internal combustion engine |
| KR20090065359A (en) * | 2007-12-17 | 2009-06-22 | 현대자동차주식회사 | Variable vavle lift apparatus |
| CN202645664U (en) * | 2012-06-21 | 2013-01-02 | 刘若丹 | Valve mechanism of same independent control variable valve timing and variable valve lift |
| US20150059673A1 (en) * | 2013-08-29 | 2015-03-05 | Motonic Corporation | Continuously variable valve lift actuator of engine |
-
2019
- 2019-01-03 CN CN201910004697.2A patent/CN109653831A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005180401A (en) * | 2003-12-24 | 2005-07-07 | Honda Motor Co Ltd | Valve lift variable device of internal combustion engine |
| KR20090065359A (en) * | 2007-12-17 | 2009-06-22 | 현대자동차주식회사 | Variable vavle lift apparatus |
| CN202645664U (en) * | 2012-06-21 | 2013-01-02 | 刘若丹 | Valve mechanism of same independent control variable valve timing and variable valve lift |
| US20150059673A1 (en) * | 2013-08-29 | 2015-03-05 | Motonic Corporation | Continuously variable valve lift actuator of engine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302754A (en) * | 2019-07-29 | 2021-02-02 | 舍弗勒技术股份两合公司 | Intermediate rocker arm and valve rocker arm system |
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