CN209040915U - A kind of variable valve mechanism for engine - Google Patents
A kind of variable valve mechanism for engine Download PDFInfo
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- CN209040915U CN209040915U CN201821459256.9U CN201821459256U CN209040915U CN 209040915 U CN209040915 U CN 209040915U CN 201821459256 U CN201821459256 U CN 201821459256U CN 209040915 U CN209040915 U CN 209040915U
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- gear
- pedestal
- camshaft
- engine
- excentric sleeve
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Abstract
The utility model belongs to technical field of engines, and in particular to a kind of variable valve mechanism for engine provides a kind of new easy adjusting variable valve actuator for air.Its middle gear a is connected with engine crankshaft dynamical system, provides power for the rotation of camshaft；Gear f is fixedly connected with motor to be engaged with rack；Internal gear and cam shaft gear g engagement；Gear b, gear c, gear d, gear e are surrounded by shell；Pedestal a and pedestal b supporting cam wheel axis and excentric sleeve；Gear e is fixedly connected with internal gear provides power to camshaft: pedestal a and pedestal b support excentric sleeve and camshaft, adjust air gate distribution phase, lever for adjusting oil and gear f by motor-driven gear f to control camshaft lift.This mechanism can realize air gate distribution timing continuous variable, and control is flexible；The control of variable cam lift is simple；The volumetric efficiency of engine can be improved, optimize engine working process, improve engine performance；Structure is simple, easy to spread.
Description
Technical field
The utility model belongs to technical field of engines, and in particular to a kind of mechanical IC engine camshaft variable gas distribution machine
Structure.
Background technique
Valve actuating mechanism is one of important component of internal combustion engine, it, which carries, realizes each cylinder inlet and outlet of engine
The open and close timing of door and the important function for controlling the valve stroke characteristics of motion are to realize engine breathing process, guarantee internal combustion
The working cycles of machine heat to power output are able to the basis constantly to go in cycles.Therefore, engine whether can reliably working,
Can its dynamic property and economy be protected, with valve actuating mechanism in the close phase of selection for realizing the port timing in scavenging period
It closes.Traditional engine is since structure is fixed, and in engine operation process, port timing is fixed and invariable, the liter of valve
Journey is also fixed.Obviously, this disadvantage is not able to satisfy it at this stage to engine high-efficiency rate, low oil consumption, low emission
General requirement.Therefore, in order to meet under different operating conditions the needs of to valve actuating mechanism, internal combustion engine economy and dynamic property, drop are improved
Low hazardous emission is particularly important using changeable air valve technology.Changeable air valve technology can according to the variation of engine conditions,
Realize valve stroke from zero to design maximum lift and port timing continuous variable.
Utility model content
The shortcomings that air gate distribution phase cannot flexibly be changed the purpose of the utility model is to overcome available engine and gram
The shortcomings that variable valve timing and variable cam lift cannot flexibly cooperate is taken, provides a kind of simple and reliable for structure and energy flexibly
Air gate distribution phase and camshaft lift are controlled, realizes the engine variable that valve timing continuous variable and camshaft lift can be changed
Valve mechanism.
The variable valve mechanism for engine, it is characterised in that: including gear a1, drive rod a2, gear b3, gear
C4, drive rod b5, gear d6, gear e7, shell 8, arc-shaped rack 9, gear f10, driving motor 11, internal gear 12, gear
G13, camshaft 14, excentric sleeve 15, pedestal a16, control-rod 17, pedestal b18；Its middle gear a1 and engine crankshaft dynamical system
System is connected, and the rotation for camshaft 14 provides power；Internal gear 9 and 14 gear f of camshaft engagement；Gear b3, gear c4, gear
D6, gear e7 are surrounded by shell 8；Pedestal a16 and pedestal b18 supports camshaft 14 and excentric sleeve 15；Gear e7 with it is interior
Gear 12, which is fixedly connected, provides power to camshaft: pedestal a16 and pedestal b18 support excentric sleeve 15 and camshaft 14.
A kind of variable valve mechanism for engine, it is characterised in that gear a1 is solid by transmission shaft a2 and gear shaft b3
Fixed connection, gear a1 and gear b3 common rotation；Gear c3, gear d6 are fixedly connected with transmission shaft b5；Gear b3 and gear c4
Engagement, gear d6 are engaged with gear e7；Shell 8 and transmission shaft a2, transmission shaft b5, internal gear 9 are slidably connected；Driving motor 11 is solid
Surely it is connected to gear f10, positioned at the top of shell 8；Rack gear 9 is fixed on shell 8；The shape of rack gear f10 is with transmission shaft a1
Centered on one section of circular arc；Gear f10 is engaged with rack gear 9；Driving motor 11 can drive gear f10 by engaging band with rack gear 9
Dynamic shell 8 and transmission shaft b5 are rotated around internal gear 12 and transmission shaft a2；Gear b3, gear c4, gear d6, gear e7, internal gear 9
It is identical as the revolving speed of gear g13 with the revolving speed for reaching gear a1 with the specific ratio of the number of teeth point of gear g13.
A kind of variable valve mechanism for engine, it is characterised in that cam 14 is fixed on gear g13；Camshaft 14
It is slidably connected with excentric sleeve 15；Excentric sleeve 15 is slidably connected with pedestal a16 and pedestal b18 respectively；Control-rod 17 is fixed to be connected
The rotation that excentric sleeve 15 is controlled on pedestal a16 and pedestal b18 is connect on excentric sleeve 15.
A kind of variable valve mechanism for engine, it is characterised in that the center of the internal gear 12 and gear g13
Away from identical as the eccentricity of excentric sleeve.
A kind of variable valve mechanism for engine, it is characterised in that when not working, gear f10 does not occur motor 11
Any rotation.
A kind of variable valve mechanism for engine, it is characterised in that gear b2 and gear a1 motor 11 work when not
It rotates.
In conjunction with each component of utility model device and its installation site relationship, the technical side of the variable valve mechanism for engine
Case is as follows:
The specific work process of utility model device can be divided into three kinds of situations:
Engine operating condition is stablized, valve mechanism constant process:
When engine operating condition is stablized, driving motor 11 is in power-off closed state, and 8 position of shell does not change；Control
15 position of bar processed is constant, and the position of camshaft 14 is constant；Gear engagement position does not change at this time；Under this working condition,
Engine crankshaft band moving gear a1 is rotated, and passes through the engagement of gear and the connection of drive rod, power transmission to gear b3- gear
C4- gear d6- gear e6- internal gear 12- gear g13- camshaft 14；By adjusting the number of teeth of well each gear, so that gear
A1 is identical as 11 revolving speed of camshaft.
Air gate distribution phase controlling process:
When engine operating condition changes, need to change correspondingly change air gate distribution phase according to operating condition；It is electric at this time
Machine 11 works, driving and 9 gear f10 of rack gear drive shell 8 and the drive rod b3, gear c4 and the gear d6 that are slidably connected with it around
The rotation of the outer surface of drive rod a2 and internal gear 12；Gear a1 does not rotate at this time；Due to the number of teeth of gear c4 and gear d5
Difference, under identical shell deflection, the rotation angle of two gears is different, so that gear e7 relatively rotates；Gear e7 with
Internal gear 12 is fixedly connected, so that internal gear 12 rotates, by driving camshaft 14 with 12 meshed gears g13 of internal gear
It rotates；Camshaft 14 and the phase of gear a1 change at this time, to change valve actuating mechanism phase.
Reach the requirement moment in air gate distribution phase, camshaft 11 is still identical as the revolving speed of gear a1.Work as driving motor
When 11 work, port timing continues to change.
Camshaft lift control process: when needing to change camshaft lift, lever for adjusting oil 17 makes excentric sleeve 15
It rotates on pedestal a16 and pedestal b18, so that the position for changing camshaft 14 is driven by excentric sleeve 15, to change
Camshaft lift；Since the eccentricity of excentric sleeve 15 and internal gear 12 and the center of gear g13 are away from identical, to adjust control
When bar 17, internal gear 12 is still engaged with gear f13；But when lever for adjusting oil 17, gear g13 will drive the generation of internal gear 12
Rotation, so that gear e7, gear d6, gear c4, gear b3 rotate, valve-control changes, and at this moment motor 11 starts
To correct valve-control.
Compared with prior art the utility model has the beneficial effects that:
1. variable valve actuator for air provided by the utility model can realize the continuous variable of air gate distribution phase, control is flexible；
2. variable valve actuator for air provided by the utility model can take into account performance under Different Work Condition of Engine, optimize engine work
Make process；
3. variable valve actuator for air provided by the utility model can realize the change of camshaft lift, to change valve liter
Journey.
4. the volumetric efficiency of engine can be improved in variable valve actuator for air provided by the utility model, effectively improve start it is motor-driven
Power and economy；
5. variable valve actuator for air structure provided by the utility model is simple, easily manufactured, easy to spread.
Detailed description of the invention
Fig. 1 is variable valve mechanism for engine schematic diagram
Fig. 2 is variable valve mechanism for engine schematic diagram
Fig. 3 is the cross-sectional view of internal gear 12 Yu the engagement place gear g13
Fig. 4 is the cross-sectional view at pedestal b18
Wherein 1. gear a, 2. drive rod a, 3. gear b, 4. gear c, 5. drive rod b, 6. gear d, 7. gear e, 8. shells
Body, 9. arc-shaped racks, 10. gear f, 11. driving motors, 12. internal gears, 13. gear g, 14. camshafts, 15. excentric sleeves,
16. pedestal a, 17. control-rods, 18. pedestal b
Specific embodiment
The utility model is described in detail with reference to the accompanying drawing:
Referring to attached drawing 1,2,3,4:
The variable valve mechanism for engine is by gear a1, drive rod a2, gear b3, gear c4, drive rod b5, gear
D6, gear e7, shell 8, arc-shaped rack 9, gear f10, driving motor 11, internal gear 12, gear g13, camshaft 14, eccentric shaft
Set 15, pedestal a16, control-rod 17, pedestal b18 composition；
Its middle gear a1 is connected with engine crankshaft dynamical system, and the rotation for camshaft 14 provides power；9 He of internal gear
14 gear f of camshaft engagement；
Gear b3, gear c4, gear d6, gear e7 are surrounded by shell 8；Pedestal a16 and pedestal b18 support camshaft
14 and excentric sleeve 15；
Gear e7 is fixedly connected with internal gear 12 provides power to camshaft: pedestal a16 and pedestal b18 support eccentric shaft
Set 15 and camshaft 14.
Gear a1 is fixedly connected by transmission shaft a2 with gear shaft b3, and gear a1 is identical as gear b3 revolving speed；Gear c3, tooth
Wheel d6 is fixedly connected with transmission shaft b5；
Gear b3 is engaged with gear c4, and gear d6 is engaged with gear e7；Shell 8 and transmission shaft a2, transmission shaft b5, internal gear
9 are slidably connected；
Driving motor 11 is fixedly connected gear f10, positioned at the top of shell 8；Rack gear 9 is fixed on shell 8；Gear
F10 is engaged with rack gear 9；
Driving motor 11 can drive gear f10 drive shell 8 and transmission shaft b5 around internal gear 12 by engaging with rack gear 9 and
Transmission shaft a2 rotation；Gear b3, gear c4, gear d6, gear e7, internal gear 9 and gear g13 the number of teeth be respectively 30,40,
36,45,30,18, it is identical as the revolving speed of gear g13 with the revolving speed for reaching gear a1.
A kind of variable valve mechanism for engine, it is characterised in that cam 14 is fixed on gear g13；Camshaft 14
It is slidably connected with excentric sleeve 15；
Excentric sleeve 15 is slidably connected with pedestal a16 and pedestal b18 respectively；Control-rod 17 is fixedly connected on excentric sleeve 15
On control rotation of the excentric sleeve 15 on pedestal a16 and pedestal b18.
The center of internal gear 12 and gear g13 are away from identical as the eccentricity of excentric sleeve.
When not working, any rotation does not occur motor 11 for gear f10.
Gear b2 and gear a1 does not rotate when motor 11 works.
Engine operating condition is stablized, valve mechanism constant process:
When engine operating condition is stablized, driving motor 16 is in power-off closed state, and 8 angle of shell does not change；Control
15 position of bar processed is constant, and the position of camshaft 11 is constant；Gear engagement position does not change at this time；Under this working condition,
Engine crankshaft band moving gear a1 is rotated, and passes through the engagement of gear and the connection of drive rod, power transmission to gear b3- gear
C4- gear d6- gear e6- internal gear 9- gear f10- camshaft 11；By adjusting the number of teeth of well each gear, so that gear a1
It is identical as 11 revolving speed of camshaft.
Air gate distribution phase controlling process:
When engine operating condition changes, need to change correspondingly change air gate distribution phase according to operating condition；It is electric at this time
Machine 16 works, and drives shell 8 and the drive rod b8, gear c4 and the gear d6 that are slidably connected with it around drive rod a2 and internal gear 9
Outer surface rotation, gear a1 is opposing stationary at this time, and gear c4, gear d5 are fixedly connected on drive rod 5 without relative rotation, from
And gear e8 relatively rotates；Gear e8 is fixedly connected with internal gear 9, so that internal gear 9 relatively rotates, by with it is interior
9 meshed gears f10 of gear drives camshaft 11 to rotate, to change valve actuating mechanism phase.
Reach the requirement moment in air gate distribution phase, camshaft 11 is identical as the revolving speed of gear a1.When 16 work of driving motor
When making, port timing continues to change.
Camshaft lift control process: when needing to change camshaft lift, lever for adjusting oil 12 makes excentric sleeve 12
It rotates, so that the position for changing camshaft 11 is driven by excentric sleeve 12, to change camshaft lift；Due to eccentric shaft
The eccentricity of set 12 and internal gear 9 and the center of gear f10 are away from identical, thus when lever for adjusting oil 12, internal gear 9 and gear
F10 is still engaged；But when lever for adjusting oil 17, gear g13 will drive internal gear 12 and rotate, thus gear e7, gear
D6, gear c4, gear b3 rotate, and valve-control changes, and the at this moment starting of motor 11 is to correct valve-control.
Claims (5)
1. a kind of variable valve mechanism for engine, it is characterised in that: including gear a (1), drive rod a (2), gear b (3), gear
C (4), drive rod b (5), gear d (6), gear e (7), shell (8), rack gear (9), gear f (10), driving motor (11), internal tooth
Take turns (12), gear g (13), camshaft (14), excentric sleeve (15), pedestal a (16), control-rod (17), pedestal b (18)；Wherein
Gear a (1) is connected with engine crankshaft dynamical system, and the rotation for camshaft (14) provides power；Internal gear (12) and cam
Axis (14) gear f (10) engagement；Gear b (3), gear c (4), gear d (6), gear e (7) are surrounded by shell (8)；Pedestal a
(16) and pedestal b (18) supports camshaft (14) and excentric sleeve (15)；Gear e (7) be fixedly connected with internal gear (12) to
Camshaft provides power: pedestal a (16) and pedestal b (18) support excentric sleeve (15) and camshaft (14).
2. a kind of variable valve mechanism for engine according to claim 1, it is characterised in that gear a (1) passes through drive rod a
(2) it is fixedly connected with gear b (3), gear a (1) and gear b (3) common rotation；Gear a (1) with engine crankshaft rotation and
Rotation；Gear c (4) and gear d (6) are fixedly connected on drive rod b (5)；Gear b (3) is engaged with gear c (4), gear d (6) with
Gear e (7) engagement；Shell (8) is contacted and is slidably connected with drive rod a (2), drive rod b (5), internal gear (12)；Driving electricity
Machine (11) is fixedly connected gear f (10), is located at the top of shell (8)；Rack gear (9) is fixedly mounted on shell (8)；Gear f
(10) it is engaged with rack gear (9)；The shape of rack gear (9) is one section of circular arc centered on drive rod a (2)；Driving motor (11) can
Gear f (10) rotation is driven, is rotated by rack drives shell (8) around internal gear (12) and drive rod a (2).
3. a kind of variable valve mechanism for engine according to claim 1, it is characterised in that gear b (3), gear c (4), tooth
The number of teeth for taking turns d (6), gear e (7), internal gear (12) and gear g (13) has certain proportion, to reach the revolving speed of (1) gear a
It is identical as the revolving speed of gear g (13).
4. a kind of variable valve mechanism for engine according to claim 1, it is characterised in that camshaft (14) is fixed in gear g
(13) on；Camshaft (14) is slidably connected with excentric sleeve (15)；Excentric sleeve (15) respectively with pedestal a (16) and pedestal b
(18) it is slidably connected；Control-rod (17), which is fixedly connected on excentric sleeve (15), controls excentric sleeve (15) in pedestal a (16)
With the rotation on pedestal b (18).
5. a kind of variable valve mechanism for engine according to claim 1, it is characterised in that the internal gear (12) and tooth
The center of g (13) is taken turns away from identical as the eccentricity of excentric sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821459256.9U CN209040915U (en) | 2018-09-07 | 2018-09-07 | A kind of variable valve mechanism for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821459256.9U CN209040915U (en) | 2018-09-07 | 2018-09-07 | A kind of variable valve mechanism for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209040915U true CN209040915U (en) | 2019-06-28 |
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ID=67032565
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821459256.9U Active CN209040915U (en) | 2018-09-07 | 2018-09-07 | A kind of variable valve mechanism for engine |
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| CN (1) | CN209040915U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825325A (en) * | 2018-09-07 | 2018-11-16 | 吉林大学 | A kind of variable valve mechanism for engine |
-
2018
- 2018-09-07 CN CN201821459256.9U patent/CN209040915U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825325A (en) * | 2018-09-07 | 2018-11-16 | 吉林大学 | A kind of variable valve mechanism for engine |
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