CN110005496A - Two-stage variable air valve lift range mechanism for internal combustion engine - Google Patents
Two-stage variable air valve lift range mechanism for internal combustion engine Download PDFInfo
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- CN110005496A CN110005496A CN201910401200.0A CN201910401200A CN110005496A CN 110005496 A CN110005496 A CN 110005496A CN 201910401200 A CN201910401200 A CN 201910401200A CN 110005496 A CN110005496 A CN 110005496A
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- guiding groove
- guide surface
- straight line
- line portion
- axle sleeve
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- 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
- F01L13/0036—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
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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 provides a kind of two-stage variable air valve lift range mechanism for internal combustion engine applied to gas engine part technical field, the axle sleeve A (2) of the two-stage variable air valve lift range mechanism for internal combustion engine includes cam pack A (7) and adjusts component A (8), guiding groove A (11) are set on the adjusting component A (8) of axle sleeve A (2), guiding groove A (11) includes guiding groove A guide surface I (12) and guiding groove A guide surface II (13), axle sleeve B (3) includes cam pack B (14) and adjusts component B (15), guiding groove B (18) are set on the adjusting component B (15) of axle sleeve B (3), guiding groove B (18) includes guiding groove B guide surface I (19) and guiding groove B guide surface II (20), two-stage variable valve liter for internal combustion engine of the invention Journey mechanism realizes the two-stage adjustment of valve stroke cam, it is ensured that internal combustion engine can work at the moment under optimum condition, reduce oil consumption, improve performance, be conducive to save the energy.
Description
Technical field
The invention belongs to gas engine part technical fields, are to be related to a kind of two-stage for internal combustion engine more specifically
Variable air valve lift range mechanism.
Background technique
Internal combustion engine accounts for the whole world as current thermal efficiency highest, the dynamic power machine being most widely used, the general power of sending
The 90% of power device general power used is the major consumers channel of the world oil energy.It is interior with the increase of car ownership
Combustion engine petroleum consumption will increase sharply, and contradiction between oil supply and demand is necessarily on the rise, while consuming mass energy, internal combustion engine
It is also the maximum source of atmospheric environment, especially urban air pollution, it can be seen that, internal-combustion engine technology is innovated, for section
The about energy mitigates environmental pollution and is of great significance.On the other hand, with increasingly stringent, the low row of countries in the world emission regulation
It puts and environmental protection has become the precondition that engine enters market, become the important topic that current auto industry is faced.It passes
System internal combustion engine, valve stroke are fixed and invariable, and lead to either big load or small load condition, and valve stroke opens one
Sample, causes energy waste, and the thermal efficiency is low.Structure is complicated for variable air valve lift range mechanism in the prior art.And when being worked,
The switching of cam state can not accurately be efficiently accomplished.
Summary of the invention
The technical problems to be solved by the present invention are: in view of the deficiencies of the prior art, providing one kind can be convenient and reliable full
Sufficient engine cam rotating rule realizes the three-level variation of valve stroke, it is ensured that internal combustion engine can work under optimum condition,
Oil consumption is reduced, performance is improved, is conducive to the two-stage variable valve stroke machine for internal combustion engine for internal combustion engine for saving the energy
Structure.
Solve the problems, such as techniques discussed above, the technical scheme adopted by the invention is as follows:
The present invention is a kind of two-stage variable air valve lift range mechanism for internal combustion engine, and the two-stage for internal combustion engine can
Air valve variation lift mechanisms include cam shaft mandrel, axle sleeve A, axle sleeve B, solenoid valve, and solenoid valve includes spool A and spool B, solenoid valve
It is connect with the control unit for capableing of the flexible switching of control valve core A and spool B, the axle sleeve A includes cam pack A and adjusting group
It is arranged on the adjusting component A of big cam A and small cam A, axle sleeve A on the cam pack A of part A, axle sleeve A and recessed guiding groove is set
A, guiding groove A include guiding groove A guide surface I and guiding groove A guide surface II, and axle sleeve B includes cam pack B and adjusting component B, axis
It covers and recessed guiding groove B is set on the adjusting component B that big cam B and small cam B, axle sleeve B are set on the cam pack B of B, guide
Slot B includes guiding groove B guide surface I and guiding groove B guide surface II.
The described guiding groove A guide surface I for adjusting the guiding groove A on component A include I straight line portion I of guiding groove A guide surface,
I straight line portion II of guiding groove A guide surface, I straight line portion III of guiding groove A guide surface, guiding groove A guide surface II are guided including guiding groove A
II straight line portion I of face, II straight line portion II of guiding groove A guide surface, II straight line portion III of guiding groove A guide surface.
The described guiding groove B guide surface I for adjusting the guiding groove B on component B include I straight line portion I of guiding groove B guide surface,
I straight line portion II of guiding groove B guide surface, I straight line portion III of guiding groove B guide surface, guiding groove B guide surface II are guided including guiding groove B
II straight line portion I of face, II straight line portion II of guiding groove B guide surface, II straight line portion III of guiding groove B guide surface.
I straight line portion I of guiding groove A guide surface of the guiding groove A guide surface I of the guiding groove A, guiding groove A guide surface I are straight
The guiding groove A guide surface II in line portion II, the linear structure in I straight line portion III of guiding groove A guide surface, guiding groove A guide surface II is straight
Line portion I, II straight line portion II of guiding groove A guide surface, the linear structure in II straight line portion III of guiding groove A guide surface.
I straight line portion of guiding groove A guide surface, II one end of the guiding groove A guide surface I is configured to draw to guiding groove A
The structure that II direction of guide face extends, II straight line portion of guiding groove A guide surface, II one end of the guiding groove A guide surface II is set as
The structure that can extend to I direction of guiding groove A guide surface.
I straight line portion of guiding groove B guide surface, II one end of the guiding groove B guide surface I is configured to draw to guiding groove B
The structure that II direction of guide face extends, II straight line portion of guiding groove B guide surface, II one end of the guiding groove B guide surface II is set as
The structure that can extend to I direction of guiding groove B guide surface.
I straight line portion I of guiding groove B guide surface of the guiding groove B guide surface I of the guiding groove B, guiding groove B guide surface I are straight
The guiding groove B guide surface II in line portion II, the linear structure in I straight line portion III of guiding groove B guide surface, guiding groove B guide surface II is straight
Line portion I, II straight line portion II of guiding groove B guide surface, the linear structure in II straight line portion III of guiding groove B guide surface.
The adjusting component A of the axle sleeve A is set as along 1 radial direction of cam shaft mandrel being semicircular structure in section,
Adjusting component A includes adjusting the end face component A I and the adjusting end face component A II, guiding groove A guide surface I and guiding groove A guide surface II
It is respectively set to that the structure for adjusting II position of the end face component A can be extended to from adjusting I position of the end face component A.
The adjusting component B of the axle sleeve B is set as along cam shaft mandrel radial direction being semicircular structure in section, adjusts
Saving component B includes adjusting the end face component B I and adjusting the end face component B II, and guiding groove B guide surface I and guiding groove B guide surface II are divided
It is not configured to extend to the structure for adjusting II position of the end face component B from adjusting I position of the end face component B.
When the two-stage variable air valve lift range mechanism for internal combustion engine switches from low cam state to high cam state, control
Component processed is configured to the structure that the spool A of control solenoid valve stretches out, when the spool A that control unit controls solenoid valve stretches out,
Under the turning effort of cam shaft mandrel, spool A is configured to act on the drive axle sleeve A phase of guiding groove A guide surface II axle sleeve A
For the structure of the axial left sliding of cam shaft mandrel, after axle sleeve A completes axial left sliding relative to cam shaft mandrel, spool A is set
The structure that guiding groove B guide surface II drives axle sleeve B relative to the axial left sliding of cam shaft mandrel can be acted on by being set to.
When the two-stage variable air valve lift range mechanism for internal combustion engine switches from high cam state to low cam state, control
Component processed is configured to the structure that the spool B of control solenoid valve stretches out, when the spool B that control unit controls solenoid valve stretches out,
Under the turning effort of cam shaft mandrel, spool B is configured to act on the drive axle sleeve B phase of guiding groove B guide surface I axle sleeve A
For the structure of the axial right sliding of cam shaft mandrel, after axle sleeve B completes axial right sliding relative to cam shaft mandrel, spool B is set
The structure that guiding groove A guide surface I drives axle sleeve A relative to the axial right sliding of cam shaft mandrel can be acted on by being set to.
Using technical solution of the present invention, can obtain it is below the utility model has the advantages that
Two-stage variable air valve lift range mechanism for internal combustion engine of the invention, by respective big convex on axle sleeve A and axle sleeve B
The setting of wheel, small cam, cam shaft mandrel, axle sleeve A, axle sleeve B, the setting of solenoid valve and guiding groove guide surface trend set
It sets, the position positioned opposite between the spool and guiding groove of solenoid valve, control unit is to flexible opportunity of the spool of solenoid valve
Control, when engine is in different operating conditions, control unit (Engine ECU) can control the different spools of different solenoid valves
It stretches out, thus the spool (spool pin shaft) and II corresponding matching of guiding groove A guide surface I or guiding groove A guide surface that stretch out, or stretch
Spool (spool pin shaft) and II corresponding matching of guiding groove B guide surface I or guiding groove B guide surface out, thus in engine driving
Cam shaft mandrel is rotated and is driven in axle sleeve rotation process, and spool can act on guiding groove A difference guide surface or guiding groove B not
Same guide surface, because guiding groove A guide surface or guiding groove B guide surface are non-linear structure, guide surface different parts are opposite
It is different in the position of cam shaft mandrel, in this way, spool acts on guiding groove A difference guide surface or guiding groove B difference guide surface
When different location, will guide not coaxial sleeve relative to cam shaft mandrel move axially.Different spools act on different guide surfaces
On, it will be able to it realizes and drives the axial sliding to the left of axle sleeve or the axial function of sliding to the right.In this way, in engine development process
In, by the way that control strategy is arranged in control unit, it will be able under the different operating conditions of engine, so that cam sleeve is to difference
Direction axial movement, so that being worked alternatively between the high cam (big cam) of engine, low cam (small cam), so that engine
Always it works under optimum condition.The switching of size cam is realized in this way, facilitating, and is promoted the power of engine, is realized optimum condition.
Two-stage variable air valve lift range mechanism for internal combustion engine of the invention, being capable of the convenient and reliable phase for realizing camshaft and cam sleeve
Adjusting to position realizes the two-stage adjustment of valve stroke cam, so that it is guaranteed that internal combustion engine being capable of moment work under optimum condition
Make, reduce oil consumption, improve performance, is conducive to save the energy.
Detailed description of the invention
Brief description is made to content expressed by each attached drawing of this specification and the label in figure below:
Fig. 1 is the overall structure diagram of the two-stage variable air valve lift range mechanism of the present invention for internal combustion engine；
Fig. 2 is the configuration schematic diagram of the two-stage variable air valve lift range mechanism of the present invention for internal combustion engine；
Fig. 3 is the solenoid valve of the two-stage variable air valve lift range mechanism of the present invention for internal combustion engine and the arrangement of axle sleeve
Positional structure schematic diagram；
Fig. 4 is the structural schematic diagram of the axle sleeve A of the two-stage variable air valve lift range mechanism of the present invention for internal combustion engine；
Fig. 5 is the structural schematic diagram of the axle sleeve B of the two-stage variable air valve lift range mechanism of the present invention for internal combustion engine；
Knot when Fig. 6 is the expansion of the guiding groove of the two-stage variable air valve lift range mechanism of the present invention for internal combustion engine
Structure schematic diagram；
Attached drawing acceptance of the bid note is respectively as follows: 1, cam shaft mandrel；2, axle sleeve A；3, axle sleeve B；4, solenoid valve；5, spool A；6, spool
B；7, cam pack A；8, component A is adjusted；9, big cam A；10, small cam A；11, guiding groove A；12, guiding groove A guide surface I；
13, guiding groove A guide surface II；14, cam pack B；15, component B is adjusted；16, big cam B；17, small cam B；18, guiding groove
B；19, guiding groove B guide surface I；20, guiding groove B guide surface II；21, I straight line portion I of guiding groove A guide surface；22, guiding groove A draws
I straight line portion II of guide face；23, I straight line portion III of guiding groove A guide surface；24, II straight line portion I of guiding groove A guide surface；25, guiding groove A
II straight line portion II of guide surface；26, II straight line portion III of guiding groove A guide surface；27, I straight line portion I of guiding groove B guide surface；28, it guides
I straight line portion II of slot B guide surface；29, I straight line portion III of guiding groove B guide surface；30, II straight line portion I of guiding groove B guide surface；31, draw
II straight line portion II of guide groove B guide surface；32, II straight line portion III of guiding groove B guide surface；33, the end face component A I is adjusted；34, adjusting group
The end face part A II；35, the end face component B I is adjusted；36, the end face component B II is adjusted.
Specific embodiment
Below against attached drawing, by the description of the embodiment, to for example related each structure of a specific embodiment of the invention
The works such as the shape of part, construction, the mutual alignment between each section and connection relationship, the effect of each section and working principle are further
Detailed description:
As shown in attached drawing 1- attached drawing 6, the present invention is a kind of two-stage variable air valve lift range mechanism for internal combustion engine, described
Two-stage variable air valve lift range mechanism for internal combustion engine includes cam shaft mandrel 1, axle sleeve A2, axle sleeve B3, solenoid valve 4, solenoid valve 4
Including spool A5 and spool B6, solenoid valve 4 is connect with the control unit for capableing of the flexible switching of control valve core A5 and spool B6, described
Axle sleeve A2 include cam pack A7 and adjust component A8, big cam A9 and small cam are set on the cam pack A7 of axle sleeve A2
Recessed guiding groove A11 is set on the adjusting component A8 of A10, axle sleeve A2, and guiding groove A11 includes guiding groove A guide surface I 12 and draws
Guide groove A guide surface II 13, axle sleeve B3 include cam pack B14 and adjust component B15, be arranged on the cam pack B14 of axle sleeve B3
Recessed guiding groove B18 is set on the adjusting component B15 of big cam B16 and small cam B17, axle sleeve B3, and guiding groove B18 includes drawing
Guide groove B guide surface I 19 and guiding groove B guide surface II 20.Above structure, by respective big cam on axle sleeve A and axle sleeve B, small
The setting of cam, cam shaft mandrel, axle sleeve A, axle sleeve B, the setting of solenoid valve and guiding groove guide surface move towards setting, electricity
The control of position positioned opposite, control unit between the spool and guiding groove of magnet valve to the flexible opportunity of the spool of solenoid valve
System, when engine is in different operating conditions, the different spools that control unit (Engine ECU) can control different solenoid valves are stretched
Out, thus stretch out spool (spool pin shaft) and II corresponding matching of guiding groove A guide surface I or guiding groove A guide surface, or stretch out
Spool (spool pin shaft) and II corresponding matching of guiding groove B guide surface I or guiding groove B guide surface, thus convex in engine driving
Wheel shaft mandrel is rotated and is driven in axle sleeve rotation process, and spool can act on guiding groove A difference guide surface or guiding groove B is different
Guide surface because guiding groove A guide surface or guiding groove B guide surface are non-linear structure, guide surface different parts relative to
The position of cam shaft mandrel is different, in this way, spool acts on guiding groove A difference guide surface or guiding groove B difference guide surface not
When with position, will guide not coaxial sleeve relative to cam shaft mandrel move axially.Different spools act in different guide surfaces,
It can be realized as driving the axial sliding to the left of axle sleeve or the axial function of sliding to the right.In this way, leading in engine development process
It crosses and control strategy is set in control unit, it will be able under the different operating conditions of engine, so that cam sleeve is to different directions
Axial movement, so that being worked alternatively between the high cam (big cam) of engine, low cam (small cam), so that engine is always
It works under optimum condition.The switching of size cam is realized in this way, facilitating, and is promoted the power of engine, is realized optimum condition.This hair
The bright two-stage variable air valve lift range mechanism for internal combustion engine, structure is simple, being capable of convenient and reliable realization camshaft and convex
The adjusting of the relative position of wheel sleeve, realize valve stroke cam two-stage adjustment, so that it is guaranteed that internal combustion engine can the moment most
It works under good operating condition, reduces oil consumption, improve performance, be conducive to save the energy.
The guiding groove A guide surface I 12 for adjusting the guiding groove A11 on component A8 includes I straight line of guiding groove A guide surface
Portion I 21, I straight line portion II 22 of guiding groove A guide surface, I straight line portion III 23 of guiding groove A guide surface, guiding groove A guide surface II 13 include
II straight line portion I 24 of guiding groove A guide surface, II straight line portion II 25 of guiding groove A guide surface, II straight line portion III 26 of guiding groove A guide surface.
Above structure, I straight line portion I 21 of guiding groove A guide surface, I straight line portion II 22 of guiding groove A guide surface, I straight line of guiding groove A guide surface
The respectively linear structure of portion III 23, and I straight line portion I 21 of guiding groove A guide surface, I straight line portion II 22 of guiding groove A guide surface, guidance
I straight line portion III 23 of slot A guide surface is not on same straight line, to form the guiding groove A guide surface I of non-linear structure
12.II straight line portion I 24 of guiding groove A guide surface, II straight line portion II 25 of guiding groove A guide surface, II straight line portion III of guiding groove A guide surface
26 are respectively linear structure, and II straight line portion I 24 of guiding groove A guide surface, II straight line portion II 25 of guiding groove A guide surface, guiding groove A
II straight line portion III 26 of guide surface is not on same straight line, so that the guiding groove A guide surface II 13 of non-linear structure is formed,
It is adjusted axially for realizing axle sleeve A.
The guiding groove B guide surface I 19 for adjusting the guiding groove B18 on component B8 includes I straight line of guiding groove B guide surface
Portion I 27, I straight line portion II 28 of guiding groove B guide surface, I straight line portion III 29 of guiding groove B guide surface, guiding groove B guide surface II 20 include
II straight line portion I 30 of guiding groove B guide surface, II straight line portion II 31 of guiding groove B guide surface, II straight line portion III 32 of guiding groove B guide surface.
Above structure, I straight line portion I 27 of guiding groove B guide surface, I straight line portion II 28 of guiding groove B guide surface, I straight line of guiding groove B guide surface
The respectively linear structure of portion III 29, and I straight line portion I 27 of guiding groove B guide surface, I straight line portion II 28 of guiding groove B guide surface, guidance
I straight line portion III 29 of slot B guide surface is not on same straight line, to form the guiding groove B guide surface I of non-linear structure
II straight line portion I 30 of 19, guiding groove B guide surface, II straight line portion II 31 of guiding groove B guide surface, II straight line portion III of guiding groove B guide surface
32 are respectively linear structure, and II straight line portion I 30 of guiding groove B guide surface, II straight line portion II 31 of guiding groove B guide surface, guiding groove B
II straight line portion III 32 of guide surface is not on same straight line, so that the guiding groove B guide surface II 20 of non-linear structure is formed,
For realizing axle sleeve B axle to adjusting.
I straight line portion I 21 of guiding groove A guide surface of the guiding groove A guide surface I 12 of the guiding groove A11, guiding groove A draw
I straight line portion II 22 of guide face, the linear structure in I straight line portion III 23 of guiding groove A guide surface, the guidance of guiding groove A guide surface II 13
II straight line portion I 24 of slot A guide surface, II straight line portion II 25 of guiding groove A guide surface, II straight line portion III 26 of guiding groove A guide surface are in
Linear structure.Above structure, guiding groove A guide surface I 12 include multiple straight line portions, so that guiding groove A guide surface I 12 is whole in non-
Linear structure.Guiding groove A guide surface II 13 includes multiple straight line portions, so that it is in non-straight knot that guiding groove A guide surface II 13 is whole
Structure.
I straight line portion of guiding groove A guide surface, II 22 one end of the guiding groove A guide surface I 12 is configured to guidance
The structure that II 13 direction of slot A guide surface extends, II straight line portion II of guiding groove A guide surface of the guiding groove A guide surface II 13
25 one end are configured to the structure extended to I 12 direction of guiding groove A guide surface.I straight line portion II 22 of guiding groove A guide surface is along convex
The adjusting component A8 surface layout of wheel shaft mandrel.I straight line portion II 28 of guiding groove B guide surface of the guiding groove B guide surface I 19
One end is configured to the structure extended to II 20 direction of guiding groove B guide surface, and the guiding groove B of guiding groove B guide surface II 20 draws
II straight line portion of guide face, II 31 one end is configured to the structure extended to I 19 direction of guiding groove B guide surface.Guiding groove B guide surface I
Adjusting component A8 surface layout of the straight line portion II 28 along cam shaft mandrel.
I straight line portion I 27 of guiding groove B guide surface of the guiding groove B guide surface I 19 of the guiding groove B18, guiding groove B draw
I straight line portion II 28 of guide face, the linear structure in I straight line portion III 29 of guiding groove B guide surface, the guidance of guiding groove B guide surface II 20
II straight line portion I 30 of slot B guide surface, II straight line portion II 31 of guiding groove B guide surface, II straight line portion III 32 of guiding groove B guide surface are in
Linear structure.In this way, guiding groove B guide surface I 19 includes multiple straight line portions, so that the entirety of guiding groove B guide surface I 19 is in non-
Linear structure.Guiding groove B guide surface II 20 includes multiple straight line portions, so that it is in non-straight knot that guiding groove B guide surface II 20 is whole
Structure.
The adjusting component A8 of the axle sleeve A2 is set as along 1 radial direction of cam shaft mandrel being semicircle knot in section
Structure, adjusting component A8 includes adjusting the end face component A I 33 and the adjusting end face component A II 34, guiding groove A guide surface I 12 and guiding groove
A guide surface II 13 is respectively set to that adjusting II 34 position of the end face component A can be extended to from I 33 position of the end face component A is adjusted
Structure.Above structure when engine operation, when so that corresponding spool acting on the respective guide face of guide groove A, is able to drive axis
A axial movement is covered, realizes the two-stage switching of cam state.The adjusting component B15 of the axle sleeve B3 is set as along the camshaft core
1 radial direction of axis is semicircular structure in section, adjusts component B15 including adjusting the end face component B I 35 and adjusting the end face component B
II 36, guiding groove B guide surface I 19 and guiding groove B guide surface II 20 are respectively set to can be from adjusting I 35 position of the end face component B
Extend to the structure for adjusting II 36 position of the end face component B.Above structure, so that corresponding spool acts on accordingly drawing for guide groove B
When guide face, it is able to drive axle sleeve A axial movement, to realize the two-stage switching of cam state.
When the two-stage variable air valve lift range mechanism for internal combustion engine switches from low cam state to high cam state, control
Component processed is configured to the structure that the spool A5 of control solenoid valve 4 stretches out, and the spool A5 that control unit controls solenoid valve 4 stretches out
When, under the turning effort of cam shaft mandrel 1, spool A5 is configured to act on II 13 band of guiding groove A guide surface axle sleeve A2
Moving axis covers structure of the A2 relative to the axial left sliding of cam shaft mandrel 1, and axle sleeve A2 completes axial left cunning relative to cam shaft mandrel 1
After shifting, spool A5 is configured to act on the drive axle sleeve B3 of guiding groove B guide surface II 20 relative to the axial left side of cam shaft mandrel 1
The structure of sliding.
When the two-stage variable air valve lift range mechanism for internal combustion engine switches from high cam state to low cam state, control
Component processed is configured to the structure that the spool B6 of control solenoid valve 4 stretches out, and the spool B6 that control unit controls solenoid valve 4 stretches out
When, under the turning effort of cam shaft mandrel 1, spool B6 is configured to act on the drive of guiding groove B guide surface I 19 axle sleeve A2
Structure of the axle sleeve B3 relative to the axial right sliding of cam shaft mandrel 1, axle sleeve B3 complete axial right sliding relative to cam shaft mandrel 1
Afterwards, spool B6 is configured to act on the drive axle sleeve A2 of guiding groove A guide surface I 12 relative to the axial right cunning of cam shaft mandrel 1
The structure of shifting.
In structure of the invention, a solenoid valve and two axle sleeves are only needed, structure simplifies, and the invention enables mechanism responses
The rotation of fast speed, i.e. camshaft is turned around, and four cylinders are completed to switch.
Two-stage variable air valve lift range mechanism for internal combustion engine of the invention, by respective big convex on axle sleeve A and axle sleeve B
The setting of wheel, small cam, cam shaft mandrel, axle sleeve A, axle sleeve B, the setting of solenoid valve and guiding groove guide surface trend set
It sets, the position positioned opposite between the spool and guiding groove of solenoid valve, control unit is to flexible opportunity of the spool of solenoid valve
Control, when engine is in different operating conditions, control unit (Engine ECU) can control the different spools of different solenoid valves
It stretches out, thus the spool (spool pin shaft) and II corresponding matching of guiding groove A guide surface I or guiding groove A guide surface that stretch out, or stretch
Spool (spool pin shaft) and II corresponding matching of guiding groove B guide surface I or guiding groove B guide surface out, thus in engine driving
Cam shaft mandrel is rotated and is driven in axle sleeve rotation process, and spool can act on guiding groove A difference guide surface or guiding groove B not
Same guide surface, because guiding groove A guide surface or guiding groove B guide surface are non-linear structure, guide surface different parts are opposite
It is different in the position of cam shaft mandrel, in this way, spool acts on guiding groove A difference guide surface or guiding groove B difference guide surface
When different location, will guide not coaxial sleeve relative to cam shaft mandrel move axially.Different spools act on different guide surfaces
On, it will be able to it realizes and drives the axial sliding to the left of axle sleeve or the axial function of sliding to the right.In this way, in engine development process
In, by the way that control strategy is arranged in control unit, it will be able under the different operating conditions of engine, so that cam sleeve is to difference
Direction axial movement, so that being worked alternatively between the high cam (big cam) of engine, low cam (small cam), so that engine
Always it works under optimum condition.The switching of size cam is realized in this way, facilitating, and is promoted the power of engine, is realized optimum condition.
Two-stage variable air valve lift range mechanism for internal combustion engine of the invention, being capable of the convenient and reliable phase for realizing camshaft and cam sleeve
Adjusting to position realizes the two-stage adjustment of valve stroke cam, so that it is guaranteed that internal combustion engine being capable of moment work under optimum condition
Make, reduce oil consumption, improve performance, is conducive to save the energy.
Above in conjunction with attached drawing, an exemplary description of the invention, it is clear that concrete implementation of the present invention is not by above-mentioned
The limitation of mode, as long as using the various improvement that the inventive concept and technical scheme of the present invention carry out, or not improved by this
The conception and technical scheme of invention directly apply to other occasions, are within the scope of the invention.
Claims (11)
1. a kind of two-stage variable air valve lift range mechanism for internal combustion engine, it is characterised in that: the two-stage for internal combustion engine
Variable air valve lift range mechanism includes cam shaft mandrel (1), axle sleeve A (2), axle sleeve B (3), solenoid valve (4), and solenoid valve (4) includes valve
Core A (5) and spool B (6), solenoid valve (4) are connect with the control unit for capableing of the flexible switching of control valve core A (5) and spool B (6),
The axle sleeve A (2) includes cam pack A (7) and adjusts component A (8), and setting is big convex on the cam pack A (7) of axle sleeve A (2)
Recessed guiding groove A (11), guiding groove A (11) are set on the adjusting component A (8) of wheel A (9) and small cam A (10), axle sleeve A (2)
Including guiding groove A guide surface I (12) and guiding groove A guide surface II (13), axle sleeve B (3) includes cam pack B (14) and adjusting group
Big cam B (16) and small cam B (17), the adjusting of axle sleeve B (3) are set on the cam pack B (14) of part B (15), axle sleeve B (3)
Recessed guiding groove B (18) is set on component B (15), and guiding groove B (18) includes that guiding groove B guide surface I (19) and guiding groove B draw
Guide face II (20).
2. the two-stage variable air valve lift range mechanism according to claim 1 for internal combustion engine, it is characterised in that: the tune
The guiding groove A guide surface I (12) of guiding groove A (11) on section component A (8) includes I straight line portion I (21) of guiding groove A guide surface, draws
I straight line portion II (22) of guide groove A guide surface, I straight line portion III (23) of guiding groove A guide surface, guiding groove A guide surface II (13) include drawing
II straight line portion I (24) of guide groove A guide surface, II straight line portion II (25) of guiding groove A guide surface, II straight line portion III of guiding groove A guide surface
(26)。
3. the two-stage variable air valve lift range mechanism according to claim 2 for internal combustion engine, it is characterised in that: the tune
The guiding groove B guide surface I (19) of guiding groove B (18) on section component B (8) includes I straight line portion I (27) of guiding groove B guide surface, draws
I straight line portion II (28) of guide groove B guide surface, I straight line portion III (29) of guiding groove B guide surface, guiding groove B guide surface II (20) include drawing
II straight line portion I (30) of guide groove B guide surface, II straight line portion II (31) of guiding groove B guide surface, II straight line portion III of guiding groove B guide surface
(32)。
4. the two-stage variable air valve lift range mechanism according to claim 1 or 2 for internal combustion engine, it is characterised in that: described
I straight line portion I (21) of guiding groove A guide surface of guiding groove A guide surface I (12) of guiding groove A (11), guiding groove A guide surface I it is straight
Line portion II (22), the linear structure in I straight line portion III (23) of guiding groove A guide surface, the guiding groove of guiding groove A guide surface II (13)
II straight line portion I (24) of A guide surface, II straight line portion II (25) of guiding groove A guide surface, II straight line portion III (26) of guiding groove A guide surface
Linear structure.
5. the two-stage variable air valve lift range mechanism according to claim 2 for internal combustion engine, it is characterised in that: described draws
Guiding groove A guide surface I straight line portion II (22) one end of guide groove A guide surface I (12) is configured to guiding groove A guide surface II
(13) structure that direction extends, guiding groove A guide surface II straight line portion II (25) one end of the guiding groove A guide surface II (13)
It is configured to the structure extended to I (12) direction of guiding groove A guide surface.
6. the two-stage variable air valve lift range mechanism according to claim 3 for internal combustion engine, it is characterised in that: described draws
Guiding groove B guide surface I straight line portion II (28) one end of guide groove B guide surface I (19) is configured to guiding groove B guide surface II
(20) structure that direction extends, guiding groove B guide surface II straight line portion II (31) one end of the guiding groove B guide surface II (20)
It is configured to the structure extended to I (19) direction of guiding groove B guide surface.
7. the two-stage variable air valve lift range mechanism according to claim 3 for internal combustion engine, it is characterised in that: described draws
I straight line portion I (27) of guiding groove B guide surface, I straight line portion of guiding groove B guide surface of the guiding groove B guide surface I (19) of guide groove B (18)
II (28), the linear structure in I straight line portion III (29) of guiding groove B guide surface, the guiding groove B of guiding groove B guide surface II (20) draw
II straight line portion I (30) of guide face, II straight line portion II (31) of guiding groove B guide surface, II straight line portion III (32) of guiding groove B guide surface are in
Linear structure.
8. the two-stage variable air valve lift range mechanism according to claim 1 or 2 for internal combustion engine, it is characterised in that: described
Axle sleeve A (2) adjusting component A (8) be set as along cam shaft mandrel (1) radial direction in section be semicircular structure, adjust
Component A (8) includes adjusting the end face I component A (33) and adjusting the end face II component A (34), guiding groove A guide surface I (12) and guidance
Slot A guide surface II (13) is respectively set to that the adjusting end face component A II can be extended to from I (33) position of the end face component A is adjusted
(34) structure of position.
9. the two-stage variable air valve lift range mechanism according to claim 1 or 2 for internal combustion engine, it is characterised in that: described
Axle sleeve B (3) adjusting component B (15) be set as along cam shaft mandrel (1) radial direction in section be semicircular structure, adjust
Component B (15) includes adjusting the end face I component B (35) and adjusting the end face II component B (36), guiding groove B guide surface I (19) and guidance
Slot B guide surface II (20) is respectively set to that the adjusting end face component B II can be extended to from I (35) position of the end face component B is adjusted
(36) structure of position.
10. the two-stage variable air valve lift range mechanism according to claim 1 or 2 for internal combustion engine, it is characterised in that: described
When two-stage variable air valve lift range mechanism for internal combustion engine switches from low cam state to high cam state, control unit is set as
The structure that the spool A (5) of solenoid valve (4) stretches out can be controlled, when the spool A (5) that control unit controls solenoid valve (4) stretches out,
Under the turning effort of cam shaft mandrel (1), spool A (5) is configured to act on guiding groove A guide surface II axle sleeve A (2)
(13) drive axle sleeve A (2) relative to the structure of the axial left sliding of cam shaft mandrel (1), axle sleeve A (2) is relative to cam shaft mandrel
(1) after completing axial left sliding, spool A (5) is configured to act on guiding groove B guide surface II (20) drive axle sleeve B (3) phase
The structure of left sliding axial for cam shaft mandrel (1).
11. the two-stage variable air valve lift range mechanism according to claim 1 or 2 for internal combustion engine, it is characterised in that: described
When two-stage variable air valve lift range mechanism for internal combustion engine switches from high cam state to low cam state, control unit is set as
The structure that the spool B (6) of solenoid valve (4) stretches out can be controlled, when the spool B (6) that control unit controls solenoid valve (4) stretches out,
Under the turning effort of cam shaft mandrel (1), spool B (6) is configured to act on guiding groove B guide surface I axle sleeve A (2)
(19) drive axle sleeve B (3) relative to the structure of the axial right sliding of cam shaft mandrel (1), axle sleeve B (3) is relative to cam shaft mandrel
(1) after completing axial right sliding, spool B (6) is configured to act on guiding groove A guide surface I (12) drive axle sleeve A (2) phase
The structure of right sliding axial for cam shaft mandrel (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910401200.0A CN110005496A (en) | 2019-05-15 | 2019-05-15 | Two-stage variable air valve lift range mechanism for internal combustion engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910401200.0A CN110005496A (en) | 2019-05-15 | 2019-05-15 | Two-stage variable air valve lift range mechanism for internal combustion engine |
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| CN110005496A true CN110005496A (en) | 2019-07-12 |
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ID=67176996
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|---|---|---|---|
| CN201910401200.0A Pending CN110005496A (en) | 2019-05-15 | 2019-05-15 | Two-stage variable air valve lift range mechanism for internal combustion engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110469378A (en) * | 2019-09-24 | 2019-11-19 | 深圳臻宇新能源动力科技有限公司 | Admission cam, engine and the vehicle of engine |
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| EP1956201A2 (en) * | 2007-02-06 | 2008-08-13 | Mazda Motor Corporation | An adjustable valve drive device of an engine and mounting method therefore |
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