CN110017188A - A kind of engine rocker formula variable valve gear - Google Patents
A kind of engine rocker formula variable valve gear Download PDFInfo
- Publication number
- CN110017188A CN110017188A CN201910424920.9A CN201910424920A CN110017188A CN 110017188 A CN110017188 A CN 110017188A CN 201910424920 A CN201910424920 A CN 201910424920A CN 110017188 A CN110017188 A CN 110017188A
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- gear
- rack
- rocker arm
- engine
- connecting rod
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- 241001633942 Dais Species 0.000 claims description 27
- 230000008859 change Effects 0.000 abstract description 14
- 238000002485 combustion reaction Methods 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000004044 response Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
Classifications
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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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/181—Centre pivot rocking arms
- F01L1/182—Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft
- F01L1/183—Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft of the boat type
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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
- F01L13/0021—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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- 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
- F01L2013/10—Auxiliary actuators for variable valve timing
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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
- F01L2013/10—Auxiliary actuators for variable valve timing
- F01L2013/103—Electric motors
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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 discloses a kind of engine rocker formula variable valve gear, including cam, motor, rack pinion, rocker arm, connecting rod.Engine rocker formula variable valve gear is fixed in cylinder head, when engine speed variation, the rotation of respective angles is carried out by motor-driven gear 6, band carry-over bar 4, rack shaft 2, connecting rod 7, sliding block 13 does identical quantitative translational motion, to change the Rocker Ratio of rocker arm 12, pass through the promotion of cam 15, realize the lift continuous changeable of valve 19, solve the problems, such as that engine valve stroke under different operating conditions is unable to continuous variable, so that engine is under different operating conditions, intake and exhaust are abundant, improve in-cylinder combustion environment, so as to improve the fuel economy and emission performance of engine.
Description
Technical field
The present invention relates to a kind of automotive engine component or equipment, in particular to a kind of engine rocker formula changeable air valve dress
It sets.
Background technique
As the national standard of energy-saving and emission-reduction is gradually harsh, it is Engine Downsizing become reach requirement possible technique it
One.Engine Downsizing technological core is exhaust turbocharging system, and gasoline engine directly sprays and variable valve timing.Wherein
The variable valve timing main function of engine is the opening and closing moment for controlling valve according to the working cycles of each cylinder, continues
The lift of time and valve reduces the discharge of noxious pollutant so as to improve combustion process, improves engine performance.
Engine mainly uses variable timing technology based on cam structure and without cam variable valve timing at present
Technology.Main Types are divided into mechanical type variable valve timing, electric-liquid type variable valve timing, electric variable valve timing, electricity
Magnetic-type variable valve timing.Wherein mechanical and electric-liquid type variable valve timing technology application is more extensive.Electric-liquid type is variable
There are response lags for valve timing mechanism, and seating velocity is fast, the big and at high cost disadvantage of impact force.
In consideration of it, it is fast it is necessary to study a kind of response and structure is simple, the variable valve actuator for air of cost-effective, realize valve
The consecutive variations of lift.
Summary of the invention
The present invention provides a kind of engine rocker formula valve gear of achievable continuously variable valve lift, structure letters
It is single, fast response time, so as to solve the deficiencies in the prior art.
To solve the problems, such as appeal, the present invention is realized using following method:
Engine rocker formula variable air valve lift apparatus is by cylinder cap 1, rack shaft 2, rack gear bracing strut a3, rack gear 4, gear shaft
5, gear 6, connecting rod 7, limited ring dais a8, upper cover plate 9, limited ring dais b10, rack gear bracing strut b11, rocker arm 12, sliding block 13, motor
Bracket 14, cam 15, camshaft 16, thrust spring 17, valve spring 18, valve 19 form.
Wherein rack gear bracing strut a3, rack gear bracing strut b11, electric machine support 14 are fixed on cylinder cap 1 by bolt, rack shaft
2 are slidably connected with the circular hole opened up on rack gear bracing strut a3, rack gear bracing strut b11 by key；Limited ring dais a8 and limited ring dais
B10 is fixed in 2 outer surface of rack shaft, and upper cover plate 9 and connecting rod 7 are placed between limited ring dais a8 and limited ring dais b10, and pass through spiral shell
Bolt is connected；Rack shaft 2 is placed between upper cover plate 9 and connecting rod 7, clearance fit；Rack gear 4 is fixed on rack shaft 2, rectangle thereon
Tooth is engaged with gear 6；Motor is fixed on electric machine support 14, and 5 one end of gear shaft is connected to the motor, and one end and gear 6 are connected.
13 one end of sliding block is placed in crank-guide way 7001 and is slidably matched therewith, and the other end, which is placed in rocker arm slot 1201 and slides, matches
It closes；12 right end of rocker arm connects thrust spring 17, and left end and rack gear bracing strut b11 are always maintained at sliding contact, lower-left end and valve
19 upper end sliding contacts, bottom righthand side and 15 sliding contact of cam being fixed on camshaft 16；17 one end of thrust spring is fixed in
On rocker arm 12, the other end is fixed on rack gear bracing strut a3.
Rack gear 4 is cylindrical body, is equipped with rack bore 4001 in axis direction, and hole heart line is overlapped with the axial line of rack shaft 2, and
With 2 clearance fit of rack shaft；It is equipped with rectangular teeth in 4 upper end of rack gear, is engaged with gear 6.
7 one end of connecting rod is Y-shaped structure, is connected in tooth by upper cover plate 9, limited ring dais a8, limited ring dais b10 and bolt
On axis 2, the connecting rod other end is equipped with crank-guide way 7001, is slidably matched with sliding block 13.
12 upper surface of rocker arm offers rocker arm slot 1201, is slidably matched with sliding block 13.
13 top half of sliding block is a square, and lower half portion is a hemisphere.
The course of work of apparatus of the present invention is as follows:
When engine operation, the movement of motor driven gear axis 5 is to drive the gear 6 being connected on the gear shaft to revolve
Turn, the rack gear 4 being fixed on rack shaft 2 carries out translational motion and with carry-over bar and rectangular teeth thereon is engaged with gear 6
Axis 2 synchronizes translational motion along its axis direction；The translational motion of rack shaft 2 drives the connecting rod 7 being connected on it along rack gear
The axis direction of axis 2 carries out translational motion；The translational motion of connecting rod 7 drives the sliding block 13 in crank-guide way 7001 in rocker arm slot 1201
In do translational motion, the position of the fulcrum for changing rocker arm 12 simultaneously can limit moving forward and backward for rocker arm 12；Rocker arm 12 is due to one end and tooth
Bracing strut a3 affixed thrust spring 17 connects, and there are face conflicts with rack gear bracing strut b11 for one end, to make about 12 rocker arm
All there is constraint in the movement of left and right；Rocker arm 12 and 15 sliding contact of cam being fixed on camshaft 16, when 15 lug boss of cam
It point rotates to when being contacted with rocker arm 12, rocker arm 12 is pushed to be put using the position in 13 place rocker arm slot 1201 of sliding block as fulcrum
Dynamic, rocker arm 12 and 19 upper end sliding contact of valve, after overcoming the pretightning force of valve spring 18, rocker arm 12 then pushes valve
19 open；When the maximum high spot of cam 15 rotates through the contact point with rocker arm 12, rocker arm 12 where sliding block 13 at this time to shake
Position in arm slot 1201 is fulcrum, carries out rotary oscillation, then realizes the closing process of valve 19.
When engine operating condition changes, 19 lift characteristics of valve need to change, it is based on specific judgment principle, motor drives
The gear 6 being fixed on gear shaft 5 turns over specified angle, by the drive of the rack gear 4 engaged with gear 6, is connected with rack gear 4
Rack shaft 2 carry out a certain amount of translational motion in the axis direction of the rack shaft, be connected on rack shaft 2 to drive
Connecting rod 7 carries out the translational motion of equidirectional same step-length；Since sliding block 13 and crank-guide way 7001 are slidably connected, pass through connecting rod 7
Drive, while sliding block 13 moves up and down in crank-guide way 7001, with the movement of connecting rod 7, done in rocker arm slot 1201
Translational motion identical with connecting rod 7, at this point, the position of the fulcrum of rocker arm 12 becomes with a certain amount of mobile change of sliding block 13
Change；When cam 15, which moves to its protrusion, to be contacted with rocker arm 12, fulcrum is in the position after pushing rocker arm 12 to change using sliding block 13
It is swung, after rocker arm 12 touches 19 upper end of valve and overcomes the pretightning force of valve spring 18, realizes opening for valve 19
It opens；After cam 15 rotates to protrusion, rocker arm 12 realizes that back swing motion, valve 19 are fallen after rise；It is revolved in cam 15 with camshaft 16
During turning, rocker arm body can be driven to carry out position of the fulcrum transformation, motor again by motor according to the operating condition of engine
The band rotation of moving gear 6 to different angle, thus with carry-over bar 4, rack shaft 2, connecting rod 7, sliding block 13 translate it is identical it is a certain amount of away from
From the rocker arm slot 1201 of realization 13 lower end hemisphere of sliding block and rocker arm 12 contacts position of the fulcrum and changes, to change rocker arm 12
Position of the fulcrum changes its Rocker Ratio, and the amplitude that cam 15 drives rocker arm 12 to swing changes correspondingly, and then realizes the lift of valve 19
Continuous coupled change.
Compared with prior art, the beneficial effects of the present invention are:
What the present invention used continuous change valve stroke is mechanical device, the reacting condition spirit for engine operating condition
It is quick, and device is simple, can reduce the quality of variable valve gear.
Engine rocker formula variable valve gear of the present invention uses Rocker Ratio, and (rocker arm is carried out around a fulcrum
Swing, fulcrum left and right ends ratio of distances constant) structure of continuous variable, rocker arm when by different Rocker Ratios pushes valve opening,
Realize valve stroke continuous variable.
Engine rocker formula variable valve gear of the present invention uses rack-and-pinion and transmits power, by turning for motor
Turn turns to translational motion, is swift in response, and improves operational reliability.
Detailed description of the invention
Fig. 1 is the integrally-built main view of engine rocker formula variable valve gear；
Fig. 2 is the main view of rack shaft 2 used by engine rocker formula variable valve gear；
Fig. 3 is the main view of connecting rod 7 used by engine rocker formula variable valve gear；
Fig. 4 is the top view of rocker arm 12 used by engine rocker formula variable valve gear；
Fig. 5 is the main view of sliding block 13 used by engine rocker formula variable valve gear；
Fig. 6 is the left view of rack gear 4 used by engine rocker formula variable valve gear；
In figure:
Cylinder cap 1, rack shaft 2, rack gear bracing strut a3, rack gear 4, gear shaft 5, gear 6, connecting rod 7, limited ring dais a8, upper cover
Plate 9, limited ring dais b10, rack gear bracing strut b11, rocker arm 12, sliding block 13, electric machine support 14, cam 15, camshaft 16, thrust bullet
Spring 17, valve spring 18, valve 19.
Crank-guide way 7001, rocker arm slot 1201, rack bore 4001.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawing:
Refering to fig. 1, Fig. 2 engine rocker formula variable valve gear of the present invention includes with flowering structure: cylinder cap 1, tooth
Axis 2, rack gear bracing strut a3, rack gear 4, gear shaft 5, gear 6, connecting rod 7, limited ring dais a8, upper cover plate 9, limited ring dais b10,
Rack gear bracing strut b11, rocker arm 12, sliding block 13, electric machine support 14, cam 15, camshaft 16, thrust spring 17, valve spring 18,
Valve 19.
Refering to Fig. 3, Fig. 4, Fig. 6, engine rocker formula variable valve gear of the present invention includes crank-guide way 7001, shakes
Arm slot 1201, rack bore 4001.
Refering to fig. 1, Fig. 3, Fig. 4:
Rack gear bracing strut a3, rack gear bracing strut b11, electric machine support 14 are fixed on cylinder cap 1 with two bolts；Motor is solid
It connects on electric machine support 14, can be transferred power on the gear 6 affixed with gear shaft 5 by gear shaft 5 connected therewith；
The axial line of gear 6 is overlapped with the axial line of gear shaft 5, and gear 6 is passed power with reaching with the rectangle tooth engagement on rack gear 4
The purpose being delivered on rack gear 4；It is vertical but non-intersecting with the axial line of gear shaft 5 with the axial line of the affixed rack shaft of rack gear 42,
And the axis of rack shaft 2 is overlapped with the axis of rack gear 4, guarantees motion credibility；
Rack shaft 2 and rack gear bracing strut a3, rack gear bracing strut b11 are slidably connected by key, and limiting the rack shaft can only
Translational motion is carried out with its axis direction；Be connected limited ring dais a8 and limited ring dais b10, upper cover plate 9 and connecting rod on rack shaft 2
7 are placed between limited ring dais a8 and limited ring dais b10, and the upper cover plate two sides are respectively equipped with a circular hole, are bolted
Connecting rod 7 is connect by connecting rod 7 with rack shaft 2；The axis of connecting rod 7 is vertical with the axis of rack shaft 2, changes transmitting power to reach
The purpose in direction；
13 upper end of sliding block and the crank-guide way 7001 of connecting rod 7 are slidably matched, and the depth of crank-guide way 7001 is greater than the total of sliding block 13
Highly, avoid generating interference, lower end is slidably matched with rocker arm slot 1201, due to sliding block 13 position with the variation of connecting rod 7 and
Variation, thus the back-and-forth motion of rocker arm 12 is limited, the power of connecting rod 7 is reliably transmitted on rocker arm 12 by realization；Rocker arm 12 is left
There are face contacts with rack gear bracing strut b11 at end, and sliding contact, right end and the thrust spring 17 for being fixed in rack gear bracing strut a3 are solid
Even, thrust spring 17 has certain thrust, and the left end plane of rocker arm 12 and rack gear bracing strut b11 is pushed to keep sliding contact,
Rack gear bracing strut b11 generates a deboost to rocker arm 12 by the contact surface, and deboost is pushed away with thrust spring 17
Power common guarantee rocker arm 12 can be carried out with a fulcrum swing and will not up and down with move left and right, 12 lower-left end of rocker arm and valve
19 upper end is sliding contact, and bottom righthand side and the cam 15 being fixed on camshaft 16 are sliding contacts；
Valve spring 18 is mounted on around valve 19, and there are certain pretightning forces, when valve upper end stress is pre- less than spring
When clamp force, valve 19 is driven to carry out return, and absorbable vibration and impact energy.
Refering to Fig. 2:
Affixed limited ring dais a8 and limited ring dais b10 on rack shaft 2, upper cover plate 9 and connecting rod 7 are placed in limited ring dais a8 and limit
Between the land b10 of position；2 left and right ends of rack shaft are respectively arranged with keyway, be connected by key respectively with rack gear bracing strut a3 and tooth
Bracing strut b11 is slidably connected, and providing support for rack shaft 2 and limiting rack shaft 2 can only do along its axial translational motion.
Refering to Fig. 3:
The upper end of connecting rod 7 is a y-type structure, is bolted with upper cover plate 9, to reach the mesh affixed with rack shaft 2
, centre is a cylindrical structure, is smoothly connected with upper end, avoids generating stress concentration, open among the bottom surface of cylindrical body lower end
If boxed rod slot 7001, depth is greater than the height of sliding block 13.
Refering to Fig. 5:
13 upper end of sliding block is a square, is mutually slidably matched with the boxed rod slot 7001 of connecting rod 7, under sliding block 13
End is a hemisphere, and 1201 sliding contact of rocker arm slot with rocker arm 12 guarantees to move in rocker arm slot 1201 smooth.
Refering to Fig. 6:
Rack gear 4 is a cylindrical shape, offers rack bore 4001 in its direction of axis line, matches with 2 gap of rack shaft
It closes；It is equipped with rectangular teeth in 4 upper end of rack gear, is engaged with gear 6 to transmit power.
The working principle of engine rocker formula changeable air valve:
When engine operation, the movement of motor driven gear axis 5 is to drive the gear 6 being connected on the gear shaft to revolve
Turn, the rack gear 4 being fixed on rack shaft 2 carries out translational motion and with carry-over bar and rectangular teeth thereon is engaged with gear 6
Axis 2 synchronizes translational motion along its axis direction；The translational motion of rack shaft 2 drives the connecting rod 7 being connected on it along rack gear
The axis direction of axis 2 carries out translational motion；The translational motion of connecting rod 7 drives the sliding block 13 in crank-guide way 7001 in rocker arm slot 1201
In do translational motion, the position of the fulcrum for changing rocker arm 12 simultaneously can limit moving forward and backward for rocker arm 12；Rocker arm 12 is due to one end and tooth
Bracing strut a3 affixed thrust spring 17 connects, and there are face conflicts with rack gear bracing strut b11 for one end, to make about 12 rocker arm
All there is constraint in the movement of left and right；Rocker arm 12 and 15 sliding contact of cam being fixed on camshaft 16, when 15 lug boss of cam
It point rotates to when being contacted with rocker arm 12, rocker arm 12 is pushed to be put using the position in 13 place rocker arm slot 1201 of sliding block as fulcrum
Dynamic, rocker arm 12 and 19 upper end sliding contact of valve, after overcoming the pretightning force of valve spring 18, rocker arm 12 then pushes valve
19 open；When the maximum high spot of cam 15 rotates through the contact point with rocker arm 12, rocker arm 12 where sliding block 13 at this time to shake
Position in arm slot 1201 is fulcrum, carries out rotary oscillation, then realizes the closing process of valve 19.
When engine operating condition changes, 19 lift characteristics of valve need to change, it is based on specific judgment principle, motor drives
The gear 6 being fixed on gear shaft 5 turns over specified angle, by the drive of the rack gear 4 engaged with gear 6, is connected with rack gear 4
Rack shaft 2 carry out a certain amount of translational motion in the axis direction of the rack shaft, be connected on rack shaft 2 to drive
Connecting rod 7 carries out the translational motion of equidirectional same step-length；Since sliding block 13 and crank-guide way 7001 are slidably connected, pass through connecting rod 7
Drive, while sliding block 13 moves up and down in crank-guide way 7001, with the movement of connecting rod 7, done in rocker arm slot 1201
Translational motion identical with connecting rod 7, at this point, the position of the fulcrum of rocker arm 12 becomes with a certain amount of mobile change of sliding block 13
Change；When cam 15, which moves to its protrusion, to be contacted with rocker arm 12, fulcrum is in the position after pushing rocker arm 12 to change using sliding block 13
It is swung, after rocker arm 12 touches 19 upper end of valve and overcomes the pretightning force of valve spring 18, realizes opening for valve 19
It opens；After cam 15 rotates to protrusion, rocker arm 12 realizes that back swing motion, valve 19 are fallen after rise；It is revolved in cam 15 with camshaft 16
During turning, rocker arm body can be driven to carry out position of the fulcrum transformation, motor again by motor according to the operating condition of engine
The band rotation of moving gear 6 to different angle, thus with carry-over bar 4, rack shaft 2, connecting rod 7, sliding block 13 translate it is identical it is a certain amount of away from
From the rocker arm slot 1201 of realization 13 lower end hemisphere of sliding block and rocker arm 12 contacts position of the fulcrum and changes, to change rocker arm 12
Position of the fulcrum changes its Rocker Ratio, and the amplitude that cam 15 drives rocker arm 12 to swing changes correspondingly, and then realizes the lift of valve 19
Continuous coupled change.
Claims (5)
1. a kind of engine rocker formula variable valve gear, it is characterised in that cylinder cap (1), rack shaft (2), rack gear bracing strut a
(3), rack gear (4), gear shaft (5), gear (6), connecting rod (7), limited ring dais a (8), upper cover plate (9), limited ring dais b (10), tooth
Bracing strut b (11), rocker arm (12), sliding block (13), electric machine support (14), cam (15), camshaft (16), thrust spring
(17), valve spring (18), valve (19) composition；
Wherein rack gear bracing strut a (3), rack gear bracing strut b (11), electric machine support (14) are fixed on cylinder cap (1) by bolt, tooth
The circular hole opened up on axis (2) and rack gear bracing strut a (3), rack gear bracing strut b (11) is slidably connected by key；Limited ring dais a
(8) and limited ring dais b (10) is fixed in rack shaft (2) outer surface, upper cover plate (9) and connecting rod (7) be placed in limited ring dais a (8) and
Between limited ring dais b (10), and it is connected by bolt；Rack shaft (2) is placed between upper cover plate (9) and connecting rod (7), and gap is matched
It closes；Rack gear (4) is fixed on rack shaft (2), and rectangular teeth thereon is engaged with gear (6)；Motor is fixed in electric machine support (14)
On, gear shaft (5) one end is connected to the motor, and one end and gear (6) are connected；
Sliding block (13) one end is placed in crank-guide way (7001) and is slidably matched therewith, and the other end is placed in rocker arm slot (1201) and slides
Cooperation；Rocker arm (12) right end connects thrust spring (17), and left end and rack gear bracing strut b (11) are always maintained at sliding contact, lower-left
End and valve (19) upper end sliding contact, bottom righthand side and cam (15) sliding contact being fixed on camshaft (16)；Thrust bullet
Spring (17) one end is fixed on rocker arm (12), and the other end is fixed on rack gear bracing strut a (3).
2. a kind of engine rocker formula variable valve gear according to claim 1, it is characterised in that the rack gear (4) is
Cylindrical body is equipped with rack bore (4001) in axis direction, and hole heart line is overlapped with the axial line of rack shaft (2), and with rack shaft (2)
Clearance fit；It is equipped with rectangular teeth in rack gear (4) upper end, is engaged with gear (6).
3. a kind of engine rocker formula variable valve gear according to claim 1, it is characterised in that the connecting rod (7) one
End is Y-shaped structure, is connected in rack shaft (2) by upper cover plate (9), limited ring dais a (8), limited ring dais b (10) and bolt
On；Connecting rod (7) other end is equipped with crank-guide way (7001), is slidably matched with sliding block (13).
4. a kind of engine rocker formula variable valve gear according to claim 1, it is characterised in that the rocker arm (12)
Upper surface offers rocker arm slot (1201), is slidably matched with sliding block (13).
5. a kind of engine rocker formula variable valve gear according to claim 1, it is characterised in that the sliding block (13)
Top half is a square, and lower half portion is a hemisphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910424920.9A CN110017188B (en) | 2019-05-21 | 2019-05-21 | Rocker arm type variable valve device of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910424920.9A CN110017188B (en) | 2019-05-21 | 2019-05-21 | Rocker arm type variable valve device of engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110017188A true CN110017188A (en) | 2019-07-16 |
| CN110017188B CN110017188B (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910424920.9A Active CN110017188B (en) | 2019-05-21 | 2019-05-21 | Rocker arm type variable valve device of engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN110017188B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412606A (en) * | 2022-01-14 | 2022-04-29 | 吉林大学 | Linear electric motor driven continuous variable valve mechanism |
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| CN209838492U (en) * | 2019-05-21 | 2019-12-24 | 吉林大学 | Engine rocker arm type variable valve device |
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- 2019-05-21 CN CN201910424920.9A patent/CN110017188B/en active Active
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|---|---|---|---|---|
| JP2002235515A (en) * | 2001-02-08 | 2002-08-23 | Suzuki Motor Corp | Continuously variable valve device of engine |
| JP2005171922A (en) * | 2003-12-12 | 2005-06-30 | Nippon Piston Ring Co Ltd | Variable valve mechanism |
| JP2005180402A (en) * | 2003-12-24 | 2005-07-07 | Honda Motor Co Ltd | Driving device of valve lift variable mechanism |
| CN101403326A (en) * | 2008-06-16 | 2009-04-08 | 奇瑞汽车股份有限公司 | Variable air valve lift range mechanism of internal combustion engine |
| WO2009152746A1 (en) * | 2008-06-16 | 2009-12-23 | 奇瑞汽车股份有限公司 | A variable valve lift system for an internal combustion engine |
| KR20150076856A (en) * | 2013-12-27 | 2015-07-07 | 현대위아 주식회사 | Variable valve lifting device for engine |
| CN108757085A (en) * | 2018-08-10 | 2018-11-06 | 芜湖钻石航空发动机有限公司 | A kind of lift range variable structure and its control method |
| CN209838492U (en) * | 2019-05-21 | 2019-12-24 | 吉林大学 | Engine rocker arm type variable valve device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412606A (en) * | 2022-01-14 | 2022-04-29 | 吉林大学 | Linear electric motor driven continuous variable valve mechanism |
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