CN108487960A - A kind of automobile engine variable valve timing and lift regulating device - Google Patents
A kind of automobile engine variable valve timing and lift regulating device Download PDFInfo
- Publication number
- CN108487960A CN108487960A CN201810501209.4A CN201810501209A CN108487960A CN 108487960 A CN108487960 A CN 108487960A CN 201810501209 A CN201810501209 A CN 201810501209A CN 108487960 A CN108487960 A CN 108487960A
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 14
- 230000000452 restraining effect Effects 0.000 claims description 19
- 230000005611 electricity Effects 0.000 claims description 3
- 210000000078 claw Anatomy 0.000 claims description 2
- 239000010720 hydraulic oil Substances 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 11
- 239000003921 oil Substances 0.000 description 63
- 238000010586 diagram Methods 0.000 description 13
- 230000033001 locomotion Effects 0.000 description 7
- 230000004323 axial length Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012208 gear oil Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000007787 solid Substances 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
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
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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
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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
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
- F01L9/11—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column
- F01L9/12—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem
- F01L9/14—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem the volume of the chamber being variable, e.g. for varying the lift or the timing of a valve
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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
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
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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
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
- F01L9/22—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by rotary motors
-
- 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
- F01L2013/0084—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 cam contact point by radially displacing the camshaft
Abstract
A kind of automobile engine variable valve timing and lift regulating device, overcome the shortcomings of valve timing is fixed or cannot flexibly change with lift in the prior art.Mechanism includes lift control assembly, overdrive clutch gear assembly and cylinder cover component etc.；Wherein overdrive clutch gear assembly connection camshaft and shaft c, when shaft c is detached under hydraulic action with shaft b, motor a drivings overdrive clutch gear assembly makes the opposite shaft b of camshaft turn an angle to change valve timing；Drive worm and gear that the change of drain pan relative position on the upper oilhole h and plunger a of control set is driven to control the hydraulic oil column length of driving valve to change valve stroke by motor b.Valve timing and lift continuous changeable can be achieved in the present invention, and control is flexible；The volumetric efficiency of engine can be improved, optimize engine working process, improve engine power performance and economy；It is simple in structure, it is easily manufactured, it is easy to spread.
Description
Technical field
The invention belongs to technical field of automobile engine, and in particular to a kind of automobile engine variable valve timing and lift
Regulating device.
Background technology
Valve actuating mechanism is one of Liang great principal organ of internal combustion engine, it, which is responsible for, realizes each cylinder inlet and outlet of engine
The open and close moment of door and the important function for controlling the valve stroke characteristics of motion are to realize engine breathing process, ensure 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, the selection with port timing of the valve actuating mechanism in realizing scavenging period and valve
The size of lift is closely related.Traditional engine is since mechanical structure is fixed, and in its operation process, port timing is fixed
Constant, fixed port timing is a kind of compromise proposal tested under variant operating mode by engine, necessarily cannot
The requirement for taking into account each operating mode simultaneously is extremely difficult to real best port timing.Obviously, this disadvantage has kept it existing from meeting
Stage to engine high-efficiency rate, low oil consumption, low emission general requirement.Therefore, in order to meet distribution different under different operating modes
Phase demand improves engine economy and dynamic property, reduces discharge, needs to use 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.
Invention content
It is an object of the invention to overcome available engine port timing and valve stroke to immobilize or cannot flexibly change
The shortcomings that air valve variation port timing and valve stroke, provides a kind of simple and reliable for structure and can flexibly control air gate distribution phase,
Realize the regulating device of valve timing and valve stroke continuous variable.
The technical solution adopted by the present invention is as follows：
A kind of automobile engine variable valve timing and lift regulating device, including lift control assembly I, overdrive clutch tooth
Wheel assembly II, valve chamber cover 1, camshaft 2, cover board a3, bevel gear a4, shaft a5, motor shaft a6, motor a7, bevel gear b8,
Cover board b9, spring a10, sliding block 11, drag ring block a12, drag ring block b13, block a14, solenoid valve a15, restraining position ring block a16,
Drive the oily disk 20 of gear 17, shaft b18, bolt 19, gear, restraining position ring block b21, solenoid valve b22, shaft c23, block b24, gas
Door 25, spring b26, cylinder cap 27 form, wherein lift control assembly I is placed between camshaft 2 and cylinder cap 27, lift control group
The plunger a33 of part I is slidably connected with the cam 202 being arranged on camshaft 2, and plunger b40 is slidably connected with valve 25；Camshaft 2
One end and helical gear a4 are affixed, half cylindrical cavity that the half cylindrical cavity b107 and cylinder cap 27 that the other end is arranged with valve chamber cover 1 are arranged
C2702 is slidably connected；Cover board a3 is connected by bolt with the holder c2705 that cylinder cap 27 is arranged, and camshaft 202 is placed in cover board a3
Between holder c2705, clearance fit；The helical gear c42 of overdrive clutch gear assembly II respectively with helical gear a4 and helical gear
B8 is engaged, and pawl disk 43 and shaft a5 are affixed；The one end motor shaft a6 is connected by spline with shaft a5, and the other end passes through valve cover
The circular hole a101 of lid 1 is connected with motor a7, and motor a7 is fixed on valve chamber cover 1；Helical gear b8 is fixed in shaft c23 cylinders
On section a2301；The holder d2706 that cover board b9 is arranged with cylinder cap 27 is bolted；Shaft c23 cylindrical sections a2301 is placed in cover board b9
Between holder d2706, and clearance fit, meanwhile, shaft c23 cylindrical sections a2301 is also affixed with block b24；Sliding block 11 with turn
Axis c23 spline segments 2302 are slidably connected, and spring a10 is placed between sliding block 11 and block b24；Drag ring block a12 is fixed in sliding block
On 11, drag ring block b13 is fixed on block a14；Gear oil disk 20 is placed in the cavity 1801 that shaft b18 is opened up, and gap is matched
It closes, and is also fixed on shaft c23 by bolt 19；Shaft b18 is placed in 1 half cylindrical cavity a106 of valve chamber cover and 27 semicircle of cylinder cap
Between chamber d2707, clearance fit；Driving gear 17, restraining position ring block a16, restraining position ring block b21, block a14 are respectively and fixedly connected to shaft
On the outer surfaces b18；Solenoid valve a15 and solenoid valve b22 is respectively placed in the valve mounting hole a104 of valve chamber cover 1 and the valve of cylinder cap 27
Mounting hole b2710.
The lift control assembly I is by motor b28, motor shaft b29, cover board c30, worm screw 31, pressure limiting valve 32, plunger
A33, worm gear 34, cover board d35, mounting blocks 36, check valve 37, control set 38, spring c39, plunger b40 and snap ring 41；Wherein, electric
Machine b28 is fixed on cylinder cap 27, and the circular hole b2701 that the one end motor shaft b29 passes through cylinder cap 27 to be arranged is connected with motor b28, one end
The spline segment 3101 being arranged with worm screw 31 is connected；Cover board c30 and cover board d35 respectively with the holder a2703 being arranged on cylinder cap 27 and
The holder e3604 being arranged on mounting blocks 36 is connected by bolt, and worm screw 31 cylindrical section b3102 and cylindrical section c3104 is respectively placed in
Therebetween, and clearance fit；Worm gear 34 is fixed in 38 outer surfaces of control set, and is engaged with 31 rack segments 3103 of worm screw；Control set 38
Also it is connected with the control set sliding of mounting hole 3603 opened up on mounting blocks 36；The guide pad 3301 of plunger a33 left ends setting is placed in
Between camshaft 2 restraining position ring block c201 and restraining position ring block d203, clearance fit, and slided with the cam 202 being arranged on camshaft 2
It is connected；Plunger a33 right ends stretch into the plunger mounting hole 3801 of control set 38；Spring c39 is placed in and plunger a33 and plunger b40
Between；Plunger a33 and plunger b40 and 3801 clearance fit of plunger mounting hole；Snap ring 41 is placed in the limiting slot 3805 of control set 38
It is interior；Mounting blocks 36 are affixed by bolt and the holder b2704 that is arranged on cylinder cap 27.
The overdrive clutch gear assembly II is made of helical gear c42, pawl disk 43, roller 44, distribution 45, spring d46,
Its median claw disk 43 is connected with helical gear c42 slidings, and roller 44 is placed between helical gear c42 and pawl disk 43, promotes 45 one end and rolling
Column 44 is connected, and the other end is placed in the circular hole that pawl disk 43 opens up, and is connected with spring d46.
The valve chamber cover 1 is equipped with circular hole a101, oilhole a102, oil duct a103, valve mounting hole a104, Oil Guide annular groove
A105, half cylindrical cavity a106, half cylindrical cavity b107, wherein valve mounting hole a104 are placed on oil duct a103；Oilhole a102, oil duct a103 are led
Oil ring groove a105 three communicates.
The cylinder cap 27 be equipped with circular hole b2701, half cylindrical cavity c2702, holder a2703, holder b2704, holder c2705,
Holder d2706, half cylindrical cavity d2707, Oil Guide annular groove b2708, oil duct b2709, valve mounting hole b2710, oilhole d2711, wherein valve
Mounting hole b2710 is placed on oil duct b2709；Oil Guide annular groove b2708, oil duct b2709, oilhole d2711 three communicate.
The shaft b18 is equipped with cavity 1801 and oilhole c1802, and cavity 1801 is communicated with oilhole c1802, oilhole
C1802 is also communicated with the Oil Guide annular groove b2708 of the Oil Guide annular groove a105 of valve chamber cover 1 and cylinder cap 27；The shaft c23 is equipped with
Cylindrical section a2301, spline segment 2302 and threaded hole a2303.
The worm screw 31 is equipped with spline segment 3101, cylindrical section b3102, rack segments 3103, cylindrical section c3104；The column
It fills in a33 and is equipped with guide pad 3301, oil unloading trough 3302, spring positioning pit 3303, wherein guide pad 3301 and spring positioning pit
3303 are placed in the both ends plunger a33, and spring positioning pit 3303 is connected with spring c39, oil unloading trough 3302 and plunger a33, plunger
The cavity that b40 and control set 38 surround communicates.
The course of work of apparatus of the present invention is as follows：
Port timing controls process：
When engine operating condition changes, and needs to adjust port timing, solenoid valve b22 is opened, and solenoid valve a15 is closed, at this time
Oilhole c1802 of the hydraulic oil through oilhole d2711, oil duct b2709, Oil Guide annular groove b2708, Oil Guide annular groove a105, shaft b18 enters
Cavity 1801 pushes the oily disk 20 and shaft c23 of gear to overcome spring a10 resistance exercises, drag ring block a12 and drag ring block b13
It is detached from, shaft b18 and the movement of shaft c23 are mutual indepedent；Motor 7a works at this time, drives shaft a5, motor shaft a6, pawl disk 43
Rotation, the at this time distribution 45 on pawl disk 43 push roller 44 to be squeezed into wedge groove, and freewheel clutch is locked, with helical gear c42
The bevel gear a4 and bevel gear b8 of engagement are rotated therewith, and make camshaft 2 and shaft c23 certain relative to shaft b18 rotations respectively
Angle, shaft b18 are the axis for the movement for transmitting bent axle, to achieve the purpose that change port timing, due to freewheel clutch
Effect, when helical gear c42 rotating speeds are higher than pawl disk 43, clutch is in discrete state, and motor shaft a6 is not transported by shaft b18 at this time
Dynamic to influence, port timing is sized to be controlled by motor a7 and shaft b18 relative rotation speeds.
Valve stroke controls process：
When engine operating condition changes, and needs to adjust valve stroke, hydraulic oil is through check valve 37, Oil Guide annular groove d3803, oil
Hole g3804 enters in the cavity that plunger a33, plunger b40 and control set 38 surround, and motor b28 works at this time, drives motor shaft
B29, worm screw 31, worm gear 34 with control set 38 rotation, after rotation control set 38 upper oil hole h3806 not with draining on plunger a33
When slot 3302 communicates, hydraulic oil all drives plunger b40, it can be achieved that maximum valve lift controls in cavity；It is controlled after rotation
When covering 38 upper oil hole h3806 and drain pan 3302 communicating on plunger a33, the plunger a33 that section hydraulic oil drives in cam 202 is led
Sky is discharged through drain pan 3302, oilhole h3806, Oil Guide annular groove c3802, oilhole e3602, pressure limiting valve 32 under to the promotion of block 3301
Chamber does not drive plunger b40, when drain pan 3302 on the driving plunger of cam 202 a33 and the change of oilhole h3806 relative positions, no longer
When connection, raffinate pressure oil continues to drive plunger b40 in cavity, realizes the continuous variable control of valve stroke；Valve lift amount
Size control by control set 38 upper oil hole h3806 and drain pan 3302 on plunger a33 relative position determine, valve stroke
Span of control limit of control depends on the axial length of drain pan 3302.
Port timing constant process：
When engine has been adjusted to best port timing, solenoid valve b22 is closed, and solenoid valve a15 is opened, spring a10's
Screen resilience drive shaft c23 and the oily disk 20 of gear, hydraulic oil is through oilhole c1802, Oil Guide annular groove a105, Oil Guide annular groove b2708, oil
Cavity 1801 is discharged in road a103, solenoid valve a15, oilhole a102, and drag ring block a12 is fitted closely with drag ring block b13, with bent axle
Rotating speed keeps 1：The movement of the shaft b18 and shaft c23 of 2 relationships are transmitted by drag ring block a12 and drag ring block b13 and keep one
Cause, through bevel gear b8, overdrive clutch gear assembly II, with the transmission drive cam shaft 2 of bevel gear a4, at this time motor a7 not works
Make.
Valve stroke constant process：
When engine has been adjusted to optimal valve lift, motor b28 does not work, and keeps drain pan on current plunger a33
3302 is constant with the relative position of 38 upper oil hole h3806 of control set, to which the valve stroke for ensureing current is constant.
The device of the invention is simple in structure, easily manufactured easy to spread, and the variable valve timing and lift provided adjusts dress
The continuous variable of achievable port timing and valve stroke is set, control is flexible, takes into account performance under Different Work Condition of Engine, optimization hair
The motivation course of work improves the volumetric efficiency of engine, effectively improves engine power performance and economy.
Description of the drawings
Fig. 1 is the structural schematic diagram of engine variable-valve timing and lift regulating device.
Fig. 2 is the schematic diagram in lift control assembly I in Fig. 1.
Fig. 3 is the schematic diagram of overdrive clutch gear assembly II in Fig. 1.
Fig. 4 is the sectional view along A-A of Fig. 3.
Fig. 5 is the schematic diagram of valve chamber cover in Fig. 1.
Fig. 6 is the schematic diagram of camshaft in Fig. 1.
Fig. 7 is the schematic diagram of shaft b in Fig. 1.
Fig. 8 is the schematic diagram of shaft c in Fig. 1.
Fig. 9 is the schematic diagram of cylinder cap in Fig. 1.
Figure 10 is the schematic diagram of worm screw in Fig. 2.
Figure 11 is the schematic diagram of plunger a in Fig. 2.
Figure 12 is the B-B direction schematic diagram of Figure 11.
Figure 13 is the schematic diagram of mounting blocks in Fig. 2.
Figure 14 is the schematic diagram that set is controlled in Fig. 2.
In figure：I lift control assembly；II overdrive clutch gear assembly；
1 valve chamber cover；2 camshafts；3 cover board a；4 bevel gear a；5 shaft a；6 motor shaft a, 7 motor a；8 bevel gear b；9
Cover board b；10 spring a；11 sliding blocks；12 drag ring block a；13 drag ring block b；14 block a；15 solenoid valve a；16 restraining position ring block a；17
Drive gear；18 shaft b；19 bolts；The oily disk of 20 gears；21 restraining position ring block b, 22 solenoid valve b；23 shaft c；24 block b；25 gas
Door；26 spring b；27 cylinder caps；28 motor b；29 motor shaft b；30 cover board c；31 worm screws；32 pressure limiting valves；33 plunger a；34 worm gears；35
Cover board d；36 mounting blocks；37 check valves；38 control sets；39 spring c；40 plunger b；41 snap rings.
Specific implementation mode
The present invention is described in detail with reference to technical solution and attached drawing.
With reference to attached drawing 1：
The present invention by lift control assembly I, overdrive clutch gear assembly II, valve chamber cover 1, camshaft 2, cover board a3,
Bevel gear a4, it shaft a5, motor shaft a6, motor a7, bevel gear b8, cover board b9, spring a10, sliding block 11, drag ring block a12, rubs
Wipe ring block b13, block a14, solenoid valve a15, restraining position ring block a16, driving gear 17, shaft b18, bolt 19, the oily disk 20 of gear,
Restraining position ring block b21, solenoid valve b22, shaft c23, block b24, valve 25, spring b26, cylinder cap 27 form；
With reference to attached drawing 2：
The lift control assembly I is by motor b28, motor shaft b29, cover board c30, worm screw 31, pressure limiting valve 32, plunger
A33, worm gear 34, cover board d35, mounting blocks 36, check valve 37, control set 38, spring c39, plunger b40, snap ring 41 form.
With reference to attached drawing 1,3,4：
The overdrive clutch gear assembly II is made of helical gear c42, pawl disk 43, roller 44, distribution 45, spring d46；
The pawl disk 43 is connected with helical gear c42 slidings, and roller 44 is placed between helical gear c42 and pawl disk 43, promotes 45
One end is connected with roller 44, and the other end is placed in the circular hole that pawl disk 43 opens up, and is connected with spring d46.
With reference to attached drawing 5：
The valve chamber cover 1 is equipped with circular hole a101, oilhole a102, oil duct a103, valve mounting hole a104, Oil Guide annular groove
A105, half cylindrical cavity a106, half cylindrical cavity b107, wherein valve mounting hole a104 is placed in oil duct a103 upper oil holes a102, oil duct a103 is led
Oil ring groove a105 three communicates.
With reference to attached drawing 7,8：
The shaft b18 is equipped with cavity 1801 and oilhole c1802, and cavity 1801 is communicated with oilhole c1802, oilhole c1802
Also communicated with the Oil Guide annular groove b2708 of the Oil Guide annular groove a105 of valve chamber cover 1 and cylinder cap 27.
With reference to attached drawing 9：
The cylinder cap 27 is equipped with circular hole b2701, half cylindrical cavity c2702, holder a2703, holder b2704, holder c2705, branch
Frame d2706, half cylindrical cavity d2707, Oil Guide annular groove b2708, oil duct b2709, valve mounting hole b2710, oilhole d2711, wherein valve is pacified
Dress hole b2710 is placed on oil duct b2709；Oil Guide annular groove b2708, oil duct b2709, oilhole d2711 three communicate.
With reference to attached drawing 10,11,12：
The worm screw 31 is equipped with spline segment 3101, cylindrical section b3102, rack segments 3103, cylindrical section c3104；
The plunger a33 is equipped with guide pad 3301, oil unloading trough 3302, spring positioning pit 3303；
The guide pad 3301 and spring positioning pit 3303 are placed in the both ends plunger a33, spring positioning pit 3303 with
Spring c39 is connected, and oil unloading trough 3302 is communicated with the cavity that plunger a33, plunger b40 and control set 38 surround.
With reference to attached drawing 13,14：
The mounting blocks 36 are equipped with valve mounting hole c3601, oilhole e3602, control set mounting hole 3603, holder e3604, valve
Mounting hole d3605, oilhole f3606, threaded hole b3607；
Control set 38 be equipped with plunger mounting hole 3801, Oil Guide annular groove c3802, Oil Guide annular groove d3803, oilhole g3804,
Limiting slot 3805, oilhole h3806；
Cavity between oilhole g3804, Oil Guide annular groove d3803, oilhole f3606 and plunger a33 and plunger b40 communicates；Oil
Hole e3602, Oil Guide annular groove c3802 and oilhole h3806 are communicated.
With reference to attached drawing 1,2,3,5,6,7,8,9：
The lift control assembly I is placed between camshaft 2 and cylinder cap 27, the plunger a33 of lift control assembly I with it is convex
The camshaft 2 being arranged on wheel shaft 2 is slidably connected, and plunger b40 is slidably connected with valve 25；2 one end of camshaft is solid with helical gear a4
It connects, half cylindrical cavity c2702 of half cylindrical cavity b107 and cylinder cap 27 setting that the other end is arranged with valve chamber cover 1 is slidably connected；
Cover board a3 is connected by bolt with the holder c2705 that cylinder cap 27 is arranged, and cam 2 is placed in cover board a3 and holder c2705
Between, clearance fit；
The helical gear c42 of overdrive clutch gear assembly II is engaged with helical gear a4 and helical gear b8 respectively, pawl disk 43 with turn
Axis a5 is affixed；The one end motor shaft a6 is connected by spline with shaft a5, and the other end passes through the circular hole a101 and electricity of valve chamber cover 1
Machine a7 is connected, and motor a7 is fixed on valve chamber cover 1；
Helical gear b8 is fixed on shaft c23 cylindrical sections a2301；The holder d2706 bolts that cover board b9 is arranged with cylinder cap 27
Connection；
The shaft c23 is equipped with cylindrical section a2301, spline segment 2302 and threaded hole a2303, shaft c23 cylindrical sections a2301
It is placed between cover board b9 and holder d2706, and clearance fit, meanwhile, shaft c23 cylindrical sections a2301 is also affixed with block b24；
Sliding block 11 and shaft c23 spline segments 2302 are slidably connected, and spring a10 is placed between sliding block 11 and block b24；Friction
Ring block a12 is fixed on sliding block 11, and drag ring block b13 is fixed on block a14；Gear oil disk 20 is placed in what shaft b18 was opened up
In cavity 1801, clearance fit is fixed in by bolt 19 on shaft c23；
Shaft b18 is placed between 27 half cylindrical cavity d2707 of 1 half cylindrical cavity a106 of valve chamber cover and cylinder cap, clearance fit；
Driving gear 17, restraining position ring block a16, restraining position ring block b21, block a14 are respectively and fixedly connected on the outer surfaces shaft b18；
Solenoid valve a15 and solenoid valve b22 is respectively placed in the valve mounting hole a104 of the valve chamber cover 1 and valve mounting hole b2710 of cylinder cap 27.
With reference to attached drawing 1,2,9,12,13,14：
The motor b28 is fixed on cylinder cap 27, the one end motor shaft b29 pass through cylinder cap 27 be arranged circular hole b2701 with
Motor b28 is connected, and one end is connected with the spline segment 3101 that worm screw 31 is arranged；
Cover board c30 and cover board d35 respectively with the holder that is arranged on the holder a2703 and mounting blocks 36 that are arranged on cylinder cap 27
E3604 is connected by bolt, and worm screw 31 cylindrical section b3102 and cylindrical section c3104 is respectively placed in therebetween, clearance fit；
Worm gear 34 is fixed in 38 outer surfaces of control set, and is engaged with 31 rack segments 3103 of worm screw；
Control set 38 is connected with the control set sliding of mounting hole 3603 opened up on mounting blocks 36；
The guide pad 3301 of plunger a33 left ends setting is placed between camshaft 2 restraining position ring block c201 and restraining position ring block d203,
Clearance fit, and be connected with the sliding of cam 202 being arranged on camshaft 2；
Plunger a33 right ends stretch into the plunger mounting hole 3801 of control set 38；Spring c39 is placed in and plunger a33 and plunger
Between b40；Plunger a33 and plunger b40 and 3801 clearance fit of plunger mounting hole；
Snap ring 41 is placed in the limiting slot 3805 of control set 38；Mounting blocks 36 pass through the holder that is arranged on bolt and cylinder cap 27
B2704 is affixed.
In conjunction with each component of apparatus of the present invention and its installation site relationship, the engine variable-valve timing and lift adjust dress
The technical solution set is as follows：
Port timing controls process：
When engine operating condition changes, and needs to adjust port timing, solenoid valve b22 is opened, and solenoid valve a15 is closed, at this time
Oilhole c1802 of the hydraulic oil through oilhole d2711, oil duct b2709, Oil Guide annular groove b2708, Oil Guide annular groove a105, shaft b18 enters
Cavity 1801 pushes the oily disk 20 and shaft c23 of gear to overcome spring a10 resistance exercises, drag ring block a12 and drag ring block b13
It is detached from, shaft b18 and the movement of shaft c23 are mutual indepedent；Motor 7a works at this time, drives shaft a5, motor shaft a6, pawl disk 43
Rotation, the at this time distribution 45 on pawl disk 43 push roller 44 to be squeezed into wedge groove, and freewheel clutch is locked, with helical gear c42
The bevel gear a4 and bevel gear b8 of engagement are rotated therewith, and make camshaft 2 and shaft c23 certain relative to shaft b18 rotations respectively
Angle, to achieve the purpose that change port timing, due to the effect of freewheel clutch, when helical gear c42 rotating speeds are higher than pawl disk
When 43, clutch is in discrete state, and motor shaft a6 is not influenced by shaft b18 movements at this time, and port timing is sized by electricity
Machine a7 is controlled with shaft b18 relative rotation speeds.
Valve stroke controls process：
When engine operating condition changes, and needs to adjust valve stroke, hydraulic oil is through check valve 37, Oil Guide annular groove d3803, oil
Hole g3804 enters in the cavity that plunger a33, plunger b40 and control set 38 surround, and motor b28 works at this time, drives motor shaft
B29, worm screw 31, worm gear 34 with control set 38 rotation, after rotation control set 38 upper oil hole h3806 not with draining on plunger a33
When slot 3302 communicates, hydraulic oil all drives plunger b40, it can be achieved that maximum valve lift controls in cavity；It is controlled after rotation
When covering 38 upper oil hole h3806 and drain pan 3302 communicating on plunger a33, the plunger a33 that section hydraulic oil drives in cam 202 is led
Sky is discharged through drain pan 3302, oilhole h3806, Oil Guide annular groove c3802, oilhole e3602, pressure limiting valve 32 under to the promotion of block 3301
Chamber does not drive plunger b40, when drain pan 3302 on the driving plunger of cam 202 a33 and the change of oilhole h3806 relative positions, no longer
When connection, raffinate pressure oil continues to drive plunger b40 in cavity, realizes the continuous variable control of valve stroke；Valve lift amount
Size control by control set 38 upper oil hole h3806 and drain pan 3302 on plunger a33 relative position determine, valve stroke
Span of control limit of control depends on the axial length of drain pan 3302.
Port timing constant process：
When engine has been adjusted to best port timing, solenoid valve b22 is closed, and solenoid valve a15 is opened, spring a10's
Screen resilience drive shaft c23 and the oily disk 20 of gear, hydraulic oil is through oilhole c1802, Oil Guide annular groove a105, Oil Guide annular groove b2708, oil
Cavity 1801 is discharged in road a103, solenoid valve a15, oilhole a102, and drag ring block a12 is fitted closely with drag ring block b13, with bent axle
Rotating speed keeps 1：The movement of the shaft b18 and shaft c23 of 2 relationships are transmitted by drag ring block a12 and drag ring block b13 and keep one
Cause, through bevel gear b8, overdrive clutch gear assembly II, with the transmission drive cam shaft 2 of bevel gear a4, at this time motor a7 not works
Make.
Valve stroke constant process：
When engine has been adjusted to optimal valve lift, motor b28 does not work, and keeps drain pan on current plunger a33
3302 is constant with the relative position of 38 upper oil hole h3806 of control set, to which the valve stroke for ensureing current is constant.
Claims (9)
1. a kind of automobile engine variable valve timing and lift regulating device, which is characterized in that including lift control assembly
(I), overdrive clutch gear assembly（Ⅱ）, valve chamber cover（1）, camshaft（2）, cover board a（3）, bevel gear a（4）, shaft a
（5）, motor shaft a（6）, motor a（7）, bevel gear b（8）, cover board b（9）, spring a（10）, sliding block（11）, drag ring block a（12）、
Drag ring block b（13）, block a（14）, solenoid valve a（15）, restraining position ring block a（16）, driving gear（17）, shaft b（18）, bolt
（19）, the oily disk of gear（20）, restraining position ring block b（21）, solenoid valve b（22）, shaft c（23）, block b（24）, valve（25）, spring
b（26）And cylinder cap（27）；
Wherein, lift control assembly (I) is placed in camshaft（2）With cylinder cap（27）Between, the plunger a of lift control assembly (I)
（33）With camshaft（2）The cam of upper setting（202）It is slidably connected, plunger b（40）With valve（25）It is slidably connected；Camshaft
（2）One end and helical gear a（4）It is affixed, the other end and valve chamber cover（1）Half cylindrical cavity b being arranged（107）And cylinder cap（27）Setting
Half cylindrical cavity c（2702）It is slidably connected；Cover board a（3）Pass through bolt and cylinder cap（27）The holder c of setting（2705）It is connected, and convex
Wheel shaft（2）It is placed in cover board a（3）With holder c（2705）Between, clearance fit；Overdrive clutch gear assembly（Ⅱ）Helical gear c
（42）Respectively with helical gear a（4）With helical gear b（8）Engagement, pawl disk（43）With shaft a（5）It is affixed；Motor shaft a（6）One end is logical
Cross spline and shaft a（5）It is connected, the other end passes through valve chamber cover（1）Circular hole a（101）With motor a（7）It is connected, motor a
（7）It is fixed in valve chamber cover（1）On；Helical gear b（8）It is fixed in shaft c（23）Cylindrical section a（2301）On；Cover board b（9）With
Cylinder cap（27）The holder d of setting（2706）It is bolted；Shaft c（23）Cylindrical section a（2301）It is placed in cover board b（9）With holder d
（2706）Between, and clearance fit, meanwhile, shaft c（23）Cylindrical section a（2301）Also with block b（24）It is affixed；Sliding block（11）With
Shaft c（23）Spline segment（2302）It is slidably connected, spring a（10）It is placed in sliding block（11）With block b（24）Between；Drag ring block a
（12）It is fixed in sliding block（11）On, drag ring block b（13）It is fixed in block a（14）On；The oily disk of gear（20）It is placed in shaft b（18）
The cavity opened up（1801）It is interior, clearance fit, and also pass through bolt（19）It is fixed in shaft c（23）On；Shaft b（18）It is placed in gas
Door room the cover（1）Half cylindrical cavity a（106）With cylinder cap（27）Half cylindrical cavity d（2707）Between, clearance fit；Drive gear（17）, limit
Ring block a（16）, restraining position ring block b（21）, block a（14）It is respectively and fixedly connected to shaft b（18）On outer surface；Solenoid valve a（15）And electricity
Magnet valve b（22）It is respectively placed in valve chamber cover（1）Valve mounting hole a（104）And cylinder cap（27）Valve mounting hole b（2710）.
2. a kind of automobile engine variable valve timing as described in claim 1 and lift regulating device, it is characterised in that institute
The lift control assembly (I) stated is by motor b（28）, motor shaft b（29）, cover board c（30）, worm screw（31）, pressure limiting valve（32）, plunger
a（33）, worm gear（34）, cover board d（35）, mounting blocks（36）, check valve（37）, control set（38）, spring c（39）, plunger b
（40）, snap ring（41）Composition；Wherein, motor b（28）It is fixed in cylinder cap（27）On, motor shaft b（29）One end passes through cylinder cap（27）
The circular hole b of setting（2701）With motor b（28）It is connected, one end and worm screw（31）The spline segment of setting（3101）It is connected；Cover board c
（30）With cover board d（35）Respectively with cylinder cap（27）The holder a of upper setting（2703）And mounting blocks（36）The holder e of upper setting
（3604）It is connected by bolt, worm screw（31）Cylindrical section b（3102）With cylindrical section c（3104）It is respectively placed in therebetween, and gap is matched
It closes；Worm gear（34）It is fixed in control set（38）Outer surface, and and worm screw（31）Rack segments（3103）Engagement；Control set（38）Also with
Mounting blocks（36）On open up control set mounting hole（3603）Sliding is connected；Plunger a（33）The guide pad of left end setting（3301）
It is placed in camshaft（2）Restraining position ring block c（201）With restraining position ring block d（203）Between, clearance fit, and and camshaft（2）Upper setting
Cam（202）Sliding is connected；Plunger a（33）Right end stretches into control set（38）Plunger mounting hole（3801）It is interior；Spring c（39）
It is placed in and plunger a（33）With plunger b（40）Between；Plunger a（33）With plunger b（40）With plunger mounting hole（3801）Match in gap
It closes；Snap ring（41）It is placed in control set（38）Limiting slot（3805）It is interior；Mounting blocks（36）Pass through bolt and cylinder cap（27）Upper setting
Holder b（2704）It is affixed.
3. a kind of automobile engine variable valve timing as described in claim 1 or 2 and lift regulating device, it is characterised in that
The overdrive clutch gear assembly（Ⅱ）By helical gear c（42）, pawl disk（43）, roller（44）, promote（45）, spring d（46）Group
At median claw disk（43）With helical gear c（42）Sliding is connected, roller（44）It is placed in helical gear c（42）With pawl disk（43）Between, it pushes away
Pin（45）One end and roller（44）It is connected, the other end is placed in pawl disk（43）In the circular hole opened up, and with spring d（46）It is connected.
4. a kind of automobile engine variable valve timing as described in claim 1 or 2 and lift regulating device, it is characterised in that
The valve chamber cover（1）Equipped with circular hole a（101）, oilhole a（102）, oil duct a（103）, valve mounting hole a（104）, Oil Guide annular groove
a（105）, half cylindrical cavity a（106）, half cylindrical cavity b（107）, wherein valve mounting hole a（104）It is placed in oil duct a（103）On；Oilhole a
（102）, oil duct a（103）Oil Guide annular groove a（105）Three communicates.
5. a kind of automobile engine variable valve timing as described in claim 3 and lift regulating device, it is characterised in that institute
State valve chamber cover（1）Equipped with circular hole a（101）, oilhole a（102）, oil duct a（103）, valve mounting hole a（104）, Oil Guide annular groove a
（105）, half cylindrical cavity a（106）, half cylindrical cavity b（107）, wherein valve mounting hole a（104）It is placed in oil duct a（103）On；Oilhole a
（102）, oil duct a（103）Oil Guide annular groove a（105）Three communicates.
6. by a kind of automobile engine variable valve timing and lift regulating device described in claims 1 or 2 or 5, feature
It is the cylinder cap（27）Equipped with circular hole b（2701）, half cylindrical cavity c（2702）, holder a（2703）, holder b（2704）, holder c
（2705）, holder d（2706）, half cylindrical cavity d（2707）, Oil Guide annular groove b（2708）, oil duct b（2709）, valve mounting hole b（2710）、
Oilhole d（2711）, wherein valve mounting hole b（2710）It is placed in oil duct b（2709）On；Oil Guide annular groove b（2708）, oil duct b
（2709）, oilhole d（2711）Three communicates.
7. a kind of automobile engine variable valve timing as described in claim 6 and lift regulating device, it is characterised in that institute
State shaft b（18）Equipped with cavity（1801）With oilhole c（1802）, cavity（1801）With oilhole c（1802）It communicates, oilhole c
（1802）Also with valve chamber cover（1）Oil Guide annular groove a（105）And cylinder cap（27）Oil Guide annular groove b（2708）It communicates；Described turn
Axis c（23）Equipped with cylindrical section a（2301）, spline segment（2302）And threaded hole a（2303）.
8. lift control assembly (I) as described in claim 2, it is characterised in that the worm screw（31）Equipped with spline segment
（3101）, cylindrical section b（3102）, rack segments（3103）, cylindrical section c（3104）；The plunger a（33）Equipped with guide pad
（3301）, oil unloading trough（3302）, spring positioning pit（3303）, wherein guide pad（3301）With spring positioning pit（3303）Point
It is placed in plunger a（33）Both ends, spring positioning pit（3303）With spring c（39）It is connected, oil unloading trough（3302）With plunger a（33）、
Plunger b（40）And control set（38）The cavity surrounded communicates.
9. by the lift control assembly (I) described in claim 2 or 5 or 7, it is characterised in that the mounting blocks（36）Pacify equipped with valve
Fill hole c（3601）, oilhole e（3602）, control set mounting hole（3603）, holder e（3604）, valve mounting hole d（3605）, oilhole f
（3606）, threaded hole b（3607）；The control set（38）Equipped with plunger mounting hole（3801）, Oil Guide annular groove c（3802）, Oil Guide
Annular groove d（3803）, oilhole g（3804）, limiting slot（3805）, oilhole h（3806）；Wherein, oilhole g（3804）, Oil Guide annular groove d
（3803）, oilhole f（3606）And plunger a（33）With plunger b（40）Between cavity communicate；Oilhole e（3602）, Oil Guide annular groove c
（3802）With oilhole h（3806）It communicates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810501209.4A CN108487960A (en) | 2018-05-23 | 2018-05-23 | A kind of automobile engine variable valve timing and lift regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810501209.4A CN108487960A (en) | 2018-05-23 | 2018-05-23 | A kind of automobile engine variable valve timing and lift regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108487960A true CN108487960A (en) | 2018-09-04 |
Family
ID=63351175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810501209.4A Pending CN108487960A (en) | 2018-05-23 | 2018-05-23 | A kind of automobile engine variable valve timing and lift regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108487960A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339898A (en) * | 2018-10-31 | 2019-02-15 | 吉林大学 | A kind of engine rod-pulling type variable valve gear |
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