CN204253195U - The stepless variable piston stroke of synchronous differential control and the motor of compression ratio - Google Patents
The stepless variable piston stroke of synchronous differential control and the motor of compression ratio Download PDFInfo
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- CN204253195U CN204253195U CN201420537655.8U CN201420537655U CN204253195U CN 204253195 U CN204253195 U CN 204253195U CN 201420537655 U CN201420537655 U CN 201420537655U CN 204253195 U CN204253195 U CN 204253195U
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Abstract
The stepless variable piston stroke of the synchronous differential control of the utility model and the motor of compression ratio, relate to the control of the continuous variable of the compression ratio of motor, port timing.Its technological points is, realized by the rotating speed of the offset connecting rod bearing shell on synchronous differential controller control bent axle, under normal circumstances, offset connecting rod bearing shell is relative to bent axle transfixion, when needing adjustment compression ratio, the angle making offset connecting rod bearing shell certain relative to crank rotation by synchronous differential controller, makes the distance in connnecting rod big end axle center and axle center, crankshaft connecting rod axle footpath change, therefore change position and the piston stroke of the top dead center of piston, and then change compression ratio.
Description
Technical field
It is a kind of with adjustment with control the upper and lower stop of engine piston and piston stroke reaches adjustment and controls the mechanical device of cylinder compression ratio that the utility model relates to mechanical field, is the turning radius and the reciprocating device of adjustable that control machinery.
Background technique
The compression ratio of internal-combustion engine is higher, its thermal efficiency is higher, but the condition such as characteristic and high temperature, high pressure, oxygen enrichment due to used fuel easily increases nitrogen oxide etc. and discharges pollutants, so often kind of fuel has its maximal pressure contracting limit, and need continuous correction according to the change of the operating mode, environment, supplementary equipment etc. of motor.And increase the development of the technology such as journey along with the electrospray of motor fuel, worm wheel pressure booster, variable timing valve, valve, make motor to small displacement, high pulling torque, high power development, the weight that can reduce motor like this and the space taken, for fuel-economizing and improvement car body external form provide better condition.
Along with improving constantly the waste gas environmental protection low emission of motor, the performance of motor and the requirement of fuel economy in recent years, particularly EFI and worm wheel pressure booster is universal, the engine chamber redundant space at motor car engine place is more and more less, create the technology of multiple motor car engine variable compression ratio, the types such as the SVC variable compression ratio engine that such as cylinder head displacement type, cylinder oscillation formula, bent axle swing type, Sa Bo put on display simultaneously.Above-mentioned cylinder head displacement type, cylinder oscillation formula, bent axle swing type variable compression ratio engine all can produce position and move, and need greater room.The engine pin of stationary engine is arranged on cylinder body, also only has firm cylinder body just can bear this work; Motor operationally, can produce the working environment of high temperature, high pressure, vibrations in cylinder, the sealing of cylinder cap displacement type motor on all-moving surface, the connection of air inlet-outlet pipe, the driving etc. of distribution device all create very large problem because of moving of cylinder cap; Bent axle and flywheel must link together in very firmly mode, and are linked together by clutch and gearbox, and gearbox also has with engine cylinder-body and is firmly connected, cylinder oscillation formula motor will inevitably break these firmly, stable connection.And the SVC variable compression ratio engine that Sa Bo puts on display equals to create two cylinder bodies arranged side by side, add the volume and weight of motor, piston and connecting rod, gear etc. below it do pure to-and-fro motion, increase the weight of pure reciprocating member, the kinetic energy that explosion stroke produces, by gear transmission, brings great punching to gear.
Summary of the invention
Major advantage of the present utility model and feature be by: made by synchronous differential controller that offset connecting rod bearing shell does in the same way with bent axle under the operating mode of the overwhelming majority, synchronous axial system, only when adjusting engine compression ratio, just can do relative to bent axle and slowly run, therefore, main journal inner gear shaft, rod journal, offset connecting rod bearing shell and bent axle surface of contact, and wearing and tearing between each gear are negligible, therefore, the advantage showed is:
1, stepless continuous can be realized to the cylinder compression ratio of motor to control, that is, any compression ratio between engine design scope maximal pressure contracting ratio and lowest compression ratio can be reached;
2, little to the structural change of available engine, overall engine structure is constant, if less demanding, can not make any change to overall engine, only stretches certain size downwards at crankshaft main-shaft diameters place;
3, the gear on the parts such as main journal inner gear shaft, offset connecting rod bearing shell can be designed as low speed gear, requires the comparatively end for material, machining accuracy, assembly precision;
4, offset connecting rod bearing shell only does 180 degree of rotations relative to bent axle, so crankshaft eccentric rod journal gear bearing shell can be designed to two panels bearing shell, this makes bent axle can use now widely used strong and reliable one-body molded design, and bent axle segmentation need not be manufactured, assembles;
5, offset connecting rod bearing shell only does the low speed rotation of 180 degree under few operating mode relative to bent axle, so contact surface abrasion between the two can be ignored, and the surface of contact worn and torn mainly from offset connecting rod bearing shell and connecting rod or connecting rod bearing shell, and due to offset connecting rod bearing shell need not consider as the bent axle to bear motor produce various turn round refuse, impact force and integrity, so material, processing technology selected by it are more extensive, and the raising such as coating, coating wear resistance can be added on surface;
6, the gear on offset connecting rod bearing shell is low speed gear, can reduce the width of gear, when motor length is constant, be equivalent to the width adding crankshaft main-shaft diameters and connecting rod journal diameter, add the area of rubbing surface, reduce the pressure of rubbing surface, be equivalent to improve wear resistance;
7, be all static relative to bent axle due to the offset connecting rod bearing shell most work time, only just there is variation when adjusting engine compression ratio, so, the change as regular as clockwork of the upper and lower stop of motor, and change is comparatively slow, therefore, the adjustment for aspects such as the adjustment of pasta height in the dynamic balancing of whole crank shaft, oil sump, ignition timing, valve timing and fuel deliveries also can accomplish good control;
8, synchronous differential controller also may be used for the adjustment of Variable Valve Time;
9, temperature in cylinder can be reduced by injecting water in cylinder, preventing from making because compression ratio is too high temperature too high, producing the pollution of detonation and nitrogen oxide one class, increased the pressure in cylinder simultaneously by gasified water, add the efficiency of motor.
The motor of variable piston stroke described in the utility model and compression ratio as described in claim 1 with main journal hollow type bent axle (1) for tie, by the main journal inner gear shaft (2) in hollow main shaft neck, crankshaft eccentric rod journal gear bearing shell (4) of band balancer weight is connected to become the entirety of a synchronous axial system, as long as any one parts rotates in crankshaft eccentric rod journal gear bearing shell (4) of main journal inner gear shaft (2) and band balancer weight, crankshaft eccentric rod journal gear bearing shell (4) of all main journal inner gear shafts (2) on this whole bent axle and band balancer weight all can be followed and be synchronously rotated together, synchronous differential controller (3) described in claim 1 is just by controlling one of them parts, keep synchronous motor most time controling main journal inner gear shaft (2) with bent axle, equidirectional rotation, under such conditions, main journal inner gear shaft (2) in bent axle and hollow main shaft neck will keep the state of geo-stationary with crankshaft eccentric rod journal gear bearing shell (4) of balancer weight, without wearing and tearing and other loss, and when needing stroke and the compression ratio changing piston, synchronous differential controller (3) controls a main journal inner gear shaft (2) and forms relative rotation with bent axle, drive crankshaft eccentric rod journal gear bearing shell (4) of the main journal inner gear shaft (2) on whole bent axle in all hollow main shaft necks and band balancer weight in company with rotating with this, crankshaft eccentric rod journal gear bearing shell (4) with balancer weight due to inner ring and outer ring be not rotate on same axis, so after rotating relative to bent axle, the radius of gyration of the bent axle one end of the connecting rod installed thereon also there occurs change, therefore, on the stroke changing piston and piston, the position of lower dead center, the change of piston stroke, motor can be made in low speed engine, between medium-speed engine and high speed engine continuously, stable conversion, simultaneously, the change of piston top dead center, have also been changed the volume of firing chamber, the change of engine piston stroke and combustion chamber volume together form the change of engine compression ratio.
Accompanying drawing explanation
Described in Figure of description 1 is main structure global design figure of the present utility model, and main display right will require the hollow type bent axle described in 1, synchronous differential controller.
Described in Figure of description 2 is the synchronous differential controller described in the utility model claim 2.
Described in Figure of description 3 is the synchronous differential controller described in the utility model claim 2.
Described in Figure of description 4 is the synchronous differential controller described in the utility model claim 2.
Described in Figure of description 5 is the crankshaft eccentric rod journal gear bearing shell described in the utility model claim 3.
Described in Figure of description 6 is the crankshaft eccentric rod journal gear bearing shell described in the utility model claim 3.
As shown in Figure of description 1, in figure, 1 is the bent axle of integrated type four cylinder engine, in figure, 2 is the front end axle of bent axle, in figure, 3,4,5,6,7 is the main journal of bent axle, in figure 8 is the rear flange disk connecting flywheel, in figure, 9,10,11,12 is the rod journal of bent axle, and in figure, 13 is the balancer weight of bent axle;
The mechanism that shown in Figure of description 1, gear 14 to gear 22 forms is the synchronous differential controller described in claim 3, and in figure, 14 is gear, remains synchronous axial system with bent axle; In figure, 15 for being fixed on the axle on engine cylinder-body, motionless all the time; In figure, 16 is gear, is arranged on axle 15, and with axle 15 for axis rotation, both sides are respectively meshed with gear 14 and gear 18; In figure, 17 for being fixed on the axle on cylinder body, is controlled by the drive unit, rotates centered by axle center; In figure, 18 is the input gear in planetary gear set, is fixed on axle 17; In figure, 19 is same axles be integrated with axle 17, forms cross axle with axle 17; In figure, 20 is the middle control idle wheels in planetary gear set, is fixed on axle 19; In figure, 21 is the output gears in planetary gear set, is made up of planetary pinion gear and output gear, is arranged on axle 17; In figure, 22 is gear, is arranged on crankshaft main journal.
Each parts composition adjustment engine stroke of 22 to 29 shown in Figure of description 1 and the actuator of compression ratio, the synchronous differential controller namely described in claim 2.In figure, 23 is gear, is an entirety with gear 22, in figure, the gear shaft of 24 to be both sides be gear 25 and gears 26, is arranged on the footstalk of bent axle and the position of balancer weight, in figure, 27 are mounted in the axle on bent axle, in figure, 28 are mounted in the gear on axle 27, in figure, 29 is the offset connecting rod bearing shells described in claim, in figure, 30 is the input half-ring gears on offset connecting rod bearing shell 29, in figure, 31 is the output half-ring gears on offset connecting rod bearing shell 29, in figure, 32 is main journal inner gear shafts, in figure, 33 is input gears of main journal inner gear shaft 32, in figure, 34 is output gears of main journal inner gear shaft 32, controls next offset connecting rod bearing shell, the working procedure of Tu Zhong actuator is, gear 23 is by the gear shaft 24 through crank and balance life, active force is communicated to gear 28, and the input half-ring gear 30 controlled by gear 28 on offset connecting rod bearing shell 29, offset connecting rod bearing shell 29 is controlled with this, input half-ring gear 30 and the output half-ring gear 31 at offset connecting rod bearing shell 29 and two ends are an entirety, therefore by exporting half-ring gear 31, active force has been passed to main journal inner gear shaft 32, and passed to the offset connecting rod bearing shell on next rod journal by main journal inner gear shaft action edge, by that analogy, until active force passes to the offset connecting rod bearing shell on last rod journal 12.
By the gear 14 in Figure of description 1 by with 16 engage, the rotation of control gear 18, and gear 18 is as the input shaft in planetary gear set, the output gear 21 in planetary gear set is controlled by the middle idle wheel gear 20 of planetary gear set, and then control and gear 21 meshed gears 22, implementation is by controlling by axle 17 and axle 19 groups of all-in-one-piece cross axles, with axle 17 for axis rotation, when cross axle does not turn, by fixing velocity ratio, gear 14 and gear 22 keep equidirectional, synchronized rotation, namely, gear 22 and crankshaft-synchronous rotate, namely, what gear 22 controlled comprises gear 22, in figure, each parts of 23 to 34 are static relative to bent axle, when axle 17 and axle 19 form rotate with axle 17 cross axle that is axle center time, to rotate with crankshaft-synchronous because gear 14 remains, so gear 16 and gear 18 also remain unchanged, therefore, by the dynamic gear 22 only having gear 21 and gear 21 to control affected later, when there is nonsynchronous differential situation with bent axle in gear 22, drive by gear 22, shown in figure 23 to 34 each parts also can make relative movement relative to bent axle, crankshaft eccentric connecting rod bearing shell shown in figure is produced relative to bent axle rotate, reach the object of adjustment piston stroke and compression ratio.
Described in Figure of description 2 be one with say the actuator that claim 2 is identical with the synchronous differential controller effect described in bright book accompanying drawing 1, in Figure of description 2,1 is bent axle; In figure, 2 is main shaft diameter of bent axle; In figure, 3 is gears, keeps synchronous axial system with bent axle; In figure, 4 is be fixed together with the axle 5 in figure and axle 6, and one-tenth is integrated, and is driven by gear 4; In figure, 7 and 8 is gears, and both are an entirety, is arranged on axle 6, gear 7 is controlled by motor or other power source, when not needing conditioning, keeps transfixion relative to engine cylinder-body, when compression ratio needs adjustment, by the gear of driven by motor or rack drives, driven gear 8 rotates; In figure, 9 and 10 is gears, and gear 9 is arranged on axle 5, together with gear 4 between gear 8 and gear 10, and is driven as planetary pinion by axle 5, rotates around axle 6 and gear 8 and gear 10; In figure, 11 are axles, 12 is gears, and both and gear 10 are an entirety, are arranged on axle 6, and axle 11 is for connecting gear 10 and gear 12, if hypotelorism between two gears, can cancel axle 11; In figure, 13 and 14 is gears, and both are an entirety, and gear 13 is engaged mutually with gear 12, identical with 23 with the gear 22 in Figure of description 1.
The working procedure of the synchronous differential mechanism described in Figure of description 2: the gear 3 in figure drives and rotates with the gear 4 that it is engaged mutually, gear 4 rotates centered by the axle center of axle 6 with moving axis 5 and axle 6, axle 5 drives gear 9 mounted thereto to rotate while rotation, gear is while be engaged with gear 8, another side is engaged with gear 10, when gear 8 maintains static, gear 9 with certain rotating speed with axle 5 for axis rotation, and the parts be connected after driven gear 10 and gear 10 rotate with certain speed, when needs adjust time, actuation gear 7, and driven gear 8 with axle 6 for axis rotation, therefore the speed that gear 9 rotates around axle 5 is changed, therefore, be connected after changing gear 10 and gear 10 rotating speed of parts, reach the effect of synchronous differential controller in Figure of description 1, its principle is identical with the synchronous differential controller in Figure of description 1, structure is slightly different, suitable structure can be selected according to the requirement of Environmental Conditions.
Described in Figure of description 3 is an actuator identical with the synchronous differential controller effect described in 2 with Figure of description 1, and in figure, 1 is bent axle or other power source imported into, and in figure, 2,3,5,6,8 is gears, and in figure, 4,7 and 9 is axles.Gear 2,5 is identical with 8 numbers of teeth, and gear 3 is identical with 6 numbers of teeth.
As shown in Figure of description 3, bent axle 1 actuation gear 2 and bent axle synchronously rotate, and gear 2 drives gear gear 3,5,6,8 below to rotate, and axle 9 and gear 8 link together, synchronous axial system.Gear 3 is arranged on axle 4, gear 6 is arranged on axle 7, axle 4 and axle 7, one of them keeps transfixion, another controlled mechanism controls, does not need to keep transfixion during adjustment engine compression ratio, when when needs adjustment engine compression ratio, driven by control mechanism, with axle 9 for axle center, drive the planetary gear rotation be arranged on axle.Keep static with axle 4, axle 7 is example by control mechanism controls, when engine compression ratio is constant, bent axle 1 driven gear 3 rotates, gear 3 driven gear 5 does identical with gear 2 rotating speed, the rotation that direction is contrary, both sides because of gear 5 are gears of the same number of teeth, under axle 7 keeps actionless situation, gear 3 keeps rotating speed identical with gear 6, and sense of rotation is contrary, by the driving of gear 6, gear 8 keeps rotating speed identical with gear 5, and sense of rotation is contrary, namely keeps rotating speed with gear 2 and bent axle and turns to identical.When control mechanism live axle 7 does with axle 9 rotation that is axle center, axle 7 drives gear 6 mounted thereto to rotate, make can not keep identical rotating speed between gear 6 with gear 3, therefore gear 8 is caused to be with moving axis 9, rotating speed is created with gear 2 and bent axle, axle 9 inserts in crankshaft main-shaft diameters, the other end is gear, with the engaged gears on the offset connecting rod bearing shell of the motor in Figure of description 1, when axle 9 is identical with sense of rotation with the rotating speed of bent axle, offset connecting rod bearing shell and bent axle is driven to keep synchronous axial system, when axle 9 is different from speed of crankshaft, the rotating speed of offset connecting rod bearing shell and bent axle also can produce gap, and relative to crank rotation, now the stroke of engine piston and compression ratio change.
Described in Figure of description 4 is an actuator identical with the synchronous differential controller effect described in 3 with Figure of description 1,2, and the gear ring of 1 and 8 to be inner circles be gears in figure, in picture in picture, 2,4,5,6 is gear, and in figure, 3,7,9 is axle.
As shown in Figure of description 4, gear 2 is arranged on axle 3, while be engaged with the internal tooth of gear ring 1, while be engaged with the external tooth of gear 4, equally, gear 6 is arranged on axle 7, is engaged with the internal tooth of gear ring 8, while be engaged with the external tooth of gear 4, gear ring 1,8 and axle 3, axle 7 all with axle 9 for axle center.
Synchronous differential controller shown in Figure of description 4 can be designed to various modes as required, and such as, gear ring 1 is power input, and gear ring 8 is Power output; Gear 4 is power input, and gear 5 is Power output; The rotation of axle 3 is power input, and the rotation of axle 7 is Power output; Gear ring 1 input power, gear 5 outputting power etc.Such as, when axle 3 and axle 7 are connected as a single entity, by gear ring 1 input power, driven gear 2 and axle 3, gear 5 and axle 7 rotate, adjusting gear 4 and 5 transfixion, the rotating speed of gear 8 is identical with sense of rotation, a gear in the middle of gear 4 and gear 5 keeps transfixion, during another pinion rotation, the rotating speed of gear ring 1 and gear ring 8 is asynchronous, in like manner, input as power with gear 4, during with gear 5 as Power output, when gear ring 1 and gear ring 8 keep transfixion, gear 4 and gear 8 rotating speed, sense of rotation is identical, when in gear ring 1 and gear ring 8, one keeps transfixion, when another rotates, rotating speed between gear 4 and gear 5 is different.When axle 3 does not have the axis rotation of axle 9 to input as power, when not having the axis rotation of axle 9 as Power output with axle 7, axle 3 and axle 7 are separately, can rotate separately, gear 4 and gear 5 are connected as a single entity, when gear ring 1 and gear ring 8 keep transfixion, the rotating speed of axle 3 and axle 7, turn to identical, when wheel rim 1 and one of them maintenance transfixion of gear ring 8, when another rotates, axle 3 and axle 7 can not keep synchronous axial system.
Synchronous differential controller Main Function be exactly can pass through motor, manually, the mode input power such as gear, clutch drives, continuous print, stepless control can be carried out, the adjustment of such as motor offset connecting rod bearing described in the utility model, port timing and Variable Valve Time, boring processing etc. to the mechanical workpieces of rotating continuously.
The mechanism that shown in synchronous differential controller shown in Figure of description 2,3,4 and Figure of description 1, gear 14 to gear 22 forms for the synchronous differential controller described in claim 3 be all describe the synchronous differential controller described in claim 2.
In claims synchronous differential controller (3) according to claim 2 by driving-controlling device (1), power input wheel (2), intermediate gear (3), fixed gear (4), drived control gear (5), turn to regulating wheel (6), power output wheel (7) forms, actual design and use in, can according to structure, function need carry out different combinations and adjustment.Driving-controlling device can be the motor that controlled by car running computer etc. to control drived control gear (5), or to be driven by other power take-off mechanism.Control to keep motionless when not needing adjustment engine compression ratio, when needs adjustment engine compression ratio, by drive control device drives described in drived control gear and Figure of description 1,2,3,4.Shown in Figure of description 1, according to the needs of structure, drived control gear (5) is substituted by axle 19 and gear 20, and gear 20 is also simultaneously as intermediate gear; It is gear 7 in Figure of description 2; Axle 4 and gear 5 or axle 7 and gear 6 in Figure of description 3.
Shown in Figure of description 5 and 6 is crankshaft eccentric rod journal gear bearing shell (4) of the claim 3 in claims with balancer weight.
Shown in Figure of description 5 is the offset connecting rod bearing of band gear, and in figure shown in 1 is the section of the connecting rod journal diameter of bent axle; In figure shown in 2 is the half of connecting rod journal diameter eccentric bearing pad being with gear; In figure shown in 3 is second half eccentric bearing pad not with gear; The bearing between the crankshaft-link rod diameter of axle and connecting rod bearing shell respectively shown in 4 and 5 two sections in figure; The stiffening rib on both sides on eccentric bearing pad 2 shown in 6 and 7 and 3 in figure, be positioned at the both sides of figure middle (center) bearing 4 and 5, its outer diameter is greater than the outer diameter of the bearing 4 and 5 in figure; In figure, 8 is gears; In figure, 9,10,11,12 is pin-and-holes; In figure, 13 is chamferings; In figure, 14 and 16 is one end of the inner face that eccentric bearing pad contacts with bent axle; In figure, 15 and 17 is one end of the outside that eccentric bearing pad contacts with connecting rod bearing shell.In addition, the upper end of offset connecting rod bearing shell shown in the figure, can increase balancing weight, because when piston stroke strengthens or when reducing, original dynamic balancing is broken, increases after balancing weight, plays and regulate dynamically balanced effect.
As shown in FIG., bearing shell 3 moves right, and is buckled on the crankshaft-link rod diameter of axle and is spliced into as a whole eccentric bearing pad with bearing shell 2.Stagger mutually in the place in hole 9 and 10 and hole 11 and 12, can intersect, by pin through hole 9 and 10 and also 11 and 12, can two panels eccentric bearing pad be connected as a whole, section 4 contacts with the connecting rod journal diameter of bent axle with the internal surface of 5, outer surface contacts with connecting rod bearing shell, as we can see from the figure, below thickness is large, top thickness is little, when the rotation that control mechanism drives eccentric bearing pad to do relative to bent axle by gear 8, the center of drivening rod bearing shell creates change relative to the shaft core position of bent axle, the piston stroke controlled by connecting rod is made to create change, therefore, the compression ratio of motor is also changed.
Shown in Figure of description 6 is the offset connecting rod bearing of the band gear identical with Figure of description 2, and in figure shown in 1 is the half of connecting rod journal diameter eccentric bearing pad of band gear, in figure shown in 2 is second half eccentric bearing pad not with gear, in figure shown in 3 is the stiffening rib being with gear, in figure, 4 is the stiffening ribs not with gear, in figure, 5 and 7 is sidelines of the inner face that bearing shell contacts with the crankshaft-link rod diameter of axle, namely 5 that is to say that 7 in 14, figure in bright book accompanying drawing 2 that is to say 16 in bright book accompanying drawing 5 in figure, in figure 6 and 8 is internal surfaces of eccentric bearing pad, i.e. 18 in Figure of description 5, in figure, 10 and 12 is outer surfaces of eccentric bearing pad bearing part, i.e. 19 in Figure of description 5, the inclined-plane of 9 in figure and 11 indications is by 14 in Figure of description 5 and 15, and part between 16 and 17 is formed (because the crankshaft-link rod diameter of axle is an overall outer surface, so 5 and 7 are neat limits in figure, and connecting rod bearing shell is divided into both sides sheet, if 9 and 11 also make as 5 neat limits the same as 7 in figure in figure, in rotation, the limit of the eccentric bearing pad outer bearing part in figure just likely produces certain impact with the limit of two panels connecting rod bearing shell joint, if as a whole circle is done at connecting rod bearing shell place, then bent axle can only segmentation manufacture, improve technical requirements, manufacture cost and assembling, the difficulty of maintenance.So, as shown in FIG., in figure 9 and 11 has several angle, and this angle is the direction that hypothesis connecting rod bearing shell moves corresponding thereto is from left to right, then this hypotenuse can make lubricant oil assemble to centre to a certain extent, and certain chamfering is made on limit 9, so just can be reduced by these three kinds of modes of hypotenuse, chamfering and oil film and even eliminate the impact with two panels connecting rod bearing shell joint.); In figure, 10 and 12 is bearing parts that eccentric bearing pad contacts with connecting rod journal diameter, i.e. 19 in Figure of description 5; In figure shown in 13 and 14 is the part that the docking of confidence bearing shell is fixed, after left and right two panels eccentric bearing pad is docking together, in figure, 13 and 14 interlock, and passing hole 15 is connected with 16, is fixed together, make the bearing shell of the right and left become as a whole, the hole 17 and 18 of below in like manner.
In claims, claim 4 is leveling weight (5), is made up of gear (1), worm screw (2), pouring weight (3); Gear (1) is in one end of worm screw (2), driving with the gears meshing on the main journal inner gear shaft (2) described in claim 1 and by it drives worm screw (2) to rotate, make worm screw (2) drive the pouring weight (3) of the other end to do moving radially relative to bent axle, reach and regulate dynamically balanced object.Because piston stroke changes, so the dynamic balancing of bent axle is also changed, for keeping the dynamic balancing of bent axle, so while change engine compression ratio, also will adjust the dynamic balancing of motor.Main journal inner gear shaft 32 shown in Figure of description 1, there is gear on both sides, can with the engaged gears in Adjustable Balance Weight, driving power is provided, when piston stroke increases, driven equilibrium is heavy away from axis, offsets piston stroke and increases the centrifugal force produced.
Claim 5 described in claims is that distribution is drawn and ignition timing regulating and controlling mechanism mutually, is made up of power input part (1), synchronous differential controller according to claim 2 (2), camshaft (3), distributor wheel for inputting (4); Bent axle by power input part (1) by Timing Belt, timing chain etc. drive synchronous differential controller (2), adjusted according to the control of the devices such as car running computer by synchronous differential controller, revise after pass to camshaft (3) and distributor wheel for inputting (4).
Because be by inner circle and cylindrical the capacity eccentric bearing not on a shaft axis, so when engine compression ratio produces variation, relation between the angle of crank rotation and the upper and lower stop of piston also can change, therefore when engine compression ratio produces variation, other setting relevant with crank rotation angle all likely needs to adjust, having the greatest impact wherein with the port timing of valve and firing timing vs engine performance.By synchronous differential controller according to claim 2, can effectively to continue port timing and ignition timing, stable stepless regulated.When intake cam and exhaust cam are on same camshaft, can use one group of synchronous differential controller, when inlet and outlet camshaft is arranged apart, the synchronous differential controller of available two cover adjusts respectively to inlet and outlet camshaft respectively.
Claim 6 described in claims is machine oil liquid level height regulating systems (7), is made up of oil return Oil Guide road (1), oil storage tank (2), oil storage tank control valve (3) of draining the oil; Wherein, oil return Oil Guide road (1) is distributed in motor, the machine oil being positioned at oil storage tank (2) top introduces oil storage tank (2) by oil return Oil Guide road (1), oil storage tank is drained the oil the position that control valve (3) controls with the change of engine compression ratio to move up and down, and adjusts the height of engine oil pan machine oil pasta.
The change of engine compression ratio, the minimum point of connnecting rod big end is also changed simultaneously, the machine oil at each position of motor imports in oil storage tank by oil return Oil Guide road as much as possible as much as possible, oil storage tank is drained the oil on control valve is, the structure of lower movement, top is open, below and oil storage tank keep compact siro spinning technology, have more storage tank volume machine oil can from oil storage tank drain the oil control valve top flow out oil storage tank, therefore, what oil storage tank drained the oil that control valve controls is the size of storage tank volume, storage tank volume strengthens, the machine oil of engine oil pan will reduce, pasta will decline, on the contrary, storage tank volume reduces, the machine oil of engine oil pan will increase, pasta will rise.
Under certain condition, engine compression ratio is higher, and the combustion efficiency of motor is higher, but the factors such as the characteristic of fuel, environmental pollution limit the lifting of compression ratio.
Water described in claims sprays temperature adjustment supercharging device (8), be made up of liquid-storage container (1), filter (2), indusion tube (3), pump (4), shower nozzle (5), controller (6), shower nozzle (5) can be positioned in cylinder and in suction tude, water is by liquid-storage container (1), filter (2), indusion tube (3), pump (4), spray in suction tude or cylinder from shower nozzle (5), controller (6) controls the work of shower nozzle according to devices such as car running computers.Certain hour before plug ignition enters water smoke to in-cylinder injection, can reduce chamber temperature, prevent detonation, and increase engine compression ratio, tracheae when can spray into when intake stroke, also can spray in cylinder when compression stroke; After plug ignition, enter water smoke to in-cylinder injection in certain hour, the temperature in cylinder can be reduced, increase inner pressure of air cylinder, reduce the generation of nitrogen oxide.
Variable compression ratio engine described in the utility model can change the compression ratio of motor, and Bound moisture sprays temperature adjustment supercharging device, and motor will obtain the compression ratio of wider desirable operating mode.
Embodiment
Described in the utility model is a Mechanical course scheme, may be used on any Mechanical course adapted.Now illustrate.
Embodiment 1
When the engine speed being provided with worm gear supercharging device is lower, connecting rod eccentric bearing pad can be adjusted by control gear, make the compression ratio of motor higher, the problem because of worm gear supercharging device cylinder charge quantity not sufficient when low engine speed can be solved, and add the stroke of engine piston, improve turning round of motor to refuse, the speed-raising performance of automobile when low speed is strengthened.Along with the raising of the speed of a motor vehicle, the working efficiency of worm gear supercharging device improves thereupon, and the compression ratio of motor also reduces with the raising of the speed of a motor vehicle and engine speed, prevents motor from producing the problems such as detonation.
Embodiment 2
When motor uses diesel fuel or the high fuel of octane value, can compression ratio be improved, when the fuel using the octane values such as gasoline low, reduce compression ratio accordingly, reach a motor and can use two or more combustion.
In some chemical engineering industry level lower ground districts, sometimes the gasoline less than high grade is added, namely automobile can be made to adapt to low-grade gasoline by regulating the mode of compression ratio, and after adding high-grade gasoline, heighten compression ratio and obtain the higher thermal efficiency to make motor.
Embodiment 3
When engine compression strokes is close to top dead center, in cylinder, spray into water, the temperature in cylinder can be reduced, prevent the generation of detonation, compression ratio and the thermal efficiency of motor can be improved whereby.When motor is diffused into a certain degree at explosion stroke Flame time, water is sprayed in cylinder, the temperature in cylinder can be reduced, improve the pressure in cylinder, internal cylinder temperature declines, and the pollutant nitrogen oxide that Yin Gaowen is produced declines, water becomes water vapor through vaporization, the proportion of water vapor than air and carbon dioxide low, inner pressure of air cylinder can be made to increase, improve the thermal efficiency of motor.
Embodiment 4
With the time of the opening and closing of synchronous differential controller adjustment engine valve described in the utility model, can reach and control more accurately.
Embodiment 5
Synchronous differential controller can also be applicable to the equipment that other carries out Sustainable Control while needing to remain on rotation.
Claims (5)
1. a motor for variable piston stroke and compression ratio, comprise main journal hollow type bent axle (1), main journal inner gear shaft (2), synchronous differential controller (3), crankshaft eccentric rod journal gear bearing shell (4) of band balancer weight, Adjustable Balance Weight (5), can port timing and ignition timing regulating and controlling mechanism (6), machine oil liquid level height controlling device (7);
It is characterized in that: synchronous differential controller (3) is by being positioned at crankshaft eccentric rod journal gear bearing shell (4) of main journal inner gear shaft (2) the control cincture balancer weight of hollow crankshaft (1).
2. the motor of variable piston stroke according to claim 1 and compression ratio, it is characterized in that described synchronous differential controller (3) by driving-controlling device (1), power input wheel (2), intermediate gear (3), fixed gear (4), drived control gear (5), turn to regulating wheel (6), power output wheel (7) forms.
3. the motor of variable piston stroke according to claim 1 and compression ratio, is characterized in that crankshaft eccentric rod journal gear bearing shell (4) of described band balancer weight forms by with the oil drain tank (1) of the end face gradient and oblique angle, balancer weight (2), band gear half-watt (4) and gearless half-watt (5);
Half-watt (3) and half-watt (4) composition interior tiling and outer tiling are not the eccentric bearing pads in same axle center.
4. the motor of variable piston stroke according to claim 1 and compression ratio, is characterized in that described Adjustable Balance Weight (5) is made up of gear (1), worm screw (2), pouring weight (3).
5. the motor of variable piston stroke according to claim 1 and compression ratio, is characterized in that described machine oil liquid level height regulating system (7) is made up of oil return Oil Guide road (1), oil storage tank (2), oil storage tank control valve (3) of draining the oil; Wherein, oil return Oil Guide road (1) is distributed in motor, the machine oil being positioned at oil storage tank (2) top introduces oil storage tank (2) by oil return Oil Guide road (1), oil storage tank is drained the oil the position that control valve (3) controls with the change of engine compression ratio to move up and down, and adjusts the height of engine oil pan machine oil pasta.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420537655.8U CN204253195U (en) | 2014-09-18 | 2014-09-18 | The stepless variable piston stroke of synchronous differential control and the motor of compression ratio |
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| CN201420537655.8U CN204253195U (en) | 2014-09-18 | 2014-09-18 | The stepless variable piston stroke of synchronous differential control and the motor of compression ratio |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107096865A (en) * | 2016-02-19 | 2017-08-29 | 通用汽车环球科技运作有限责任公司 | Crankshaft group with core plug and the method for manufacturing crankshaft group |
| WO2019137278A1 (en) * | 2018-01-09 | 2019-07-18 | 西华大学 | Crank train for realizing miller cycle and control method |
| CN111622836A (en) * | 2020-06-05 | 2020-09-04 | 张家陶 | Engine crankshaft with adjustable radius |
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2014
- 2014-09-18 CN CN201420537655.8U patent/CN204253195U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107096865A (en) * | 2016-02-19 | 2017-08-29 | 通用汽车环球科技运作有限责任公司 | Crankshaft group with core plug and the method for manufacturing crankshaft group |
| WO2019137278A1 (en) * | 2018-01-09 | 2019-07-18 | 西华大学 | Crank train for realizing miller cycle and control method |
| GB2583627A (en) * | 2018-01-09 | 2020-11-04 | Univ Xihua | Crank train for realizing miller cycle and control method |
| US11008937B2 (en) | 2018-01-09 | 2021-05-18 | Xihua University | Crank and connecting rod mechanism which can realize miller cycle and its control method |
| GB2583627B (en) * | 2018-01-09 | 2021-06-16 | Univ Xihua | A Crank & Connecting Rod Mechanism Which Can Realize Miller Cycle and Its Control Method |
| CN111622836A (en) * | 2020-06-05 | 2020-09-04 | 张家陶 | Engine crankshaft with adjustable radius |
| CN111622836B (en) * | 2020-06-05 | 2021-11-19 | 张家陶 | Engine crankshaft with adjustable radius |
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