CN1053472A - Motor - Google Patents

Abstract

Motor is the adjustable compression ratio structure, be at 8 major-minor rocking arms of setting up balance staff 11, slave connecting rod 9 and linking to each other with balance staff respectively 3,2,4 of connecting rod 1 bent axle, have in major-minor rocking arm or the slave connecting rod to change the long controlling mechanism 2,4,10,12 of bar, also set up transmission buffering or counterbalance spring 39 simultaneously.Make invention can finish compression ratio adjustment easily, reduce piston, thereby reduce noise or pollution, improve adaptive capacity cylinder barrel side pressure, the rough transmission of improvement or compensation compression ratio deficiency; Shorten the multi-cylinder bent axle, improve its supporting, reduce the complete machine size; Hydraulic pressure distribution 32 has also improved gas distribution structure.The complete machine scheme is easy to implement.

Description

Motor

The invention belongs to internal-combustion engine technology, be mainly used in adjustable compression ratio engine and dependency structure thereof.

The approach that realizes the internal-combustion engine variable compression ratio is the research topic in this field always, multiple design proposal has been proposed, as China Machine Press's in March, 1985 Beijing front page, the outstanding rice of the B Π of Soviet Union doffer work, Miao Zhiming translate, " variable compression ratio engine " the 36-91 page or leaf in tall five school.These designs have been satisfied the requirement of alterable compression ratio all in varying degrees from different aspects, bring the improvement on the engine operation performance; But these schemes fail to enter the industry practical stage all because of problems such as structure or service conditions even to this day.

The objective of the invention is to, provide structure comparatively simple, near practical, variable compression ratio engine scheme easy to use.

The present invention seeks to realize like this, motor adopts piston cylinder connecting rod crank structure, also comprise necessary mechanisms such as the distribution that makes the motor proper functioning, supply, lubricated, cooling system, fly wheel assembly, power output part, normal transmission joint parts and the body that cooperates of each mechanism; Wherein between connecting rod and bent axle, set up balance staff and the plane of movement and the parallel plane slave connecting rod of link motion of axis normal piston rod plane of movement, balance staff is provided with the major and minor rocking arm that connects with connecting rod and slave connecting rod activity respectively, the major-minor rocking arm respectively with connecting rod and slave connecting rod coplane, and respectively with the balance staff rigid joint, balance staff is bearing on the body, the other end of slave connecting rod and the crank pin of bent axle are hinged, the Zhi Chengzuo adaptability translation of bent axle.Position connecting relation between each parts makes connecting rod promote balance staff around its axis swing through master rocker, and secondary-rocker rotates bent axle through slave connecting rod.Also contain the controlling mechanism that can change its active length in major and minor rocking arm or the slave connecting rod, other influences the relevant parts of the change in location that is connected and fixed because of increasing said mechanism, does the adaptability change thereupon, still keeps the function of former mechanism.Finish connecting rod to the transmission of movement bent axle by balance staff and slave connecting rod like this, still can provide the power output of motor, finish the work of former motor, the dependency structure of former motor is done still to keep function separately after the adaptability change, guarantees the motor proper functioning; The length-adjustable rod member of setting up, can make major and minor rocking arm or slave connecting rod length change, change the initial ultimate position of piston in cylinder barrel, cause compression ratio to change.The adaptability change that the balance staff that this programme is set up and slave connecting rod and former motor are relevant therewith is all very simple, so goal of the invention is achieved.

Adjustable for realizing setting up the rod member active length, the present invention transfers desire rod member be divided into to be regulated by screw pair and fixed component thereof at the relatively-movable two-part of bar length direction, its relative position fixing, or is that the sliding pair idol part of glide direction is regulated fixing by hydraulic control with bar length.Change the relative position between screw pair or even part, changing of bar long hair then, and fix by fixed component or control system.

For realizing that master rocker connects with activity between connecting rod, the present invention can adopt articulated form, and it can realize connection and transmission between connecting rod and the master rocker.

Master rocker of the present invention can also be made the form of gear or sector rack, and connecting rod and master rocker coupling part are shaped on tooth bar, and with the rolling member of adjustable tooth bar in vertical its length direction mounting point.Like this, the motion of piston can spread out of through toothed connecting rod, toothed balance staff, with tooth bar roll the rolling member link can guarantee the tooth bar engagement time correct tip clearance and the gearing power of bearing the vertical tooth rack length direction, and reduce the surface friction drag of this connection form by the rolling form.

For improving ability to bear or the compensation effective compression ratio deficiency of driving mechanism to rough combustion, the present invention is provided with the elastic force elastic transmission parts consistent with the transmission force direction at connecting rod to the Transmitted chains of bent axle, when the pretension elastic force of elastic transmission parts is controlled at engine flare issuable maximum delivered power and and output desired transmission power between, its pretension length realizes normally-compacted length for making piston; Or its maximum compression elastic force is when correct Piston Compression position, can form the power of the required transmission of the normal compression ratio of motor, and be provided with the limit position part of maximum compression distance, the position of limit position part should guarantee to compress to end and piston is in finish the position that normal compression ratio compression ends, increase the elastic transmission parts pretension length be controlled at exhaust at the end, the minimum clearance that makes piston cylinder cover is within the scope of normal compression clearance and minimum allowable clearance.

Like this, for the former, can be within pretension elastic force scope as the rigid bar transmission; When transmission power exceeds pretightening force, elastic member can deform in transmission, only the power in the elastic limit spread out of, store remaining input down, in the process that input reduces subsequently, discharge gradually again, thereby alleviated of the influence of explosive force superelevation transmission by distortion.

But at the compression of actual compression ratio deficiency oversize piston stroke at the end, improve actual compression ratio near required value, the adverse effect that compensation causes because of the compression ratio deficiency for back kind scheme; But also oversize piston stroke of elastic member in exhaust process increases the exhaust discharge capacity, in order to improving inflation; Limit position part is the needs of the normal pressurized working procedure of this rod member, and this moment, elasticity was with illusory.The piston traveled distance reduces to some extent in air-breathing, but its influence can be offseted in the positive role that other process showed fully.

For solving the change of distribution device adaptability, distribution transmission of the present invention comprises by crankshaft gear, the valve cam that timing gear drive, by the oil pressure plunger pump that this cam drove, slip idol part that is driven by plunger pump output and the pipeline and guarantee that even part directly or indirectly and the fixed connecting part that links of valve and main assemblage of spring distribution of linking.Like this, valve cam can be passed to air gate distribution by hydraulic system with power by the distribution requirement, and the change in location of needn't worry bent axle, cylinder barrel.

The present invention is by in the transmission of engine power output, set up the controlling mechanism of balance staff, major-minor rocking arm, slave connecting rod and driving link length, can when still keeping the power output function, realize the adjusting of cylinder compression ratio easily, thereby be that burning pluralities of fuel and raising adaptive capacity create conditions; Owing to set up the elastic transmission parts, can when surpassing pretension elastic force, weaken the rough running degree, or compensation actual compression ratio reduction automatically in the pretension length range, thereby weaken the impulsive load of member or improve combustion condition and starting performance, increase the ability of buffering or compensation, reduced noise or pollution; Because connecting rod tip links to each other, only does circular swing motion or straight line motion with rocking arm, when having reduced link motion and the sail angle of cylinder barrel center line, reduce piston to the side pressure and the sliding pair surface friction drag of cylinder barrel and can be the lengthened piston stroke or dwindle the cylinder barrel axial dimension possibility is provided; Can share the bent axle of a slave connecting rod, the single rod journal of use to multicylinder engine, simplify and improved bent axle and supporting structure thereof, as using rolling bearing, the scheme that connecting rod connects with the master rocker engagement, itself has leading role concurrently engagement, therefore also can be the physical dimension of simplifying piston bore creates conditions, can make the opposed engine reduced width, be more convenient on Motor Vehicle, using; The hydraulic pressure gas distribution structure had both adapted to sets up the influence that balance staff etc. brings, and has improved the performance of valve timing mechanism again.

The present invention has realized more conveniently that through simple structure conversion engine compression ratio is adjustable, but also engine operation is had compensation and improved action, has increased improved distribution driving mechanism, has started the scheme of the more approaching practicality of variable compression ratio engine.The present invention is skillfully constructed, reasonable in design, be easy to make, effect is remarkable.

Accompanying drawing is embodiment of the invention signal.

Fig. 1 is double opposed engine structure figure;

Fig. 2 is double opposed motor transmission diagrammatic sketch;

Fig. 3 is secondary-rocker structure of adjusting length figure;

Fig. 4 is the right elevation of Fig. 3;

Fig. 5 is engagement type balance staff engine structure figure;

Fig. 6 is the side view of Fig. 5;

Fig. 7 is the rocker gear diagrammatic sketch;

Fig. 8 is the A-A sectional drawing of Fig. 7;

Fig. 9 is that the B-B section of Fig. 7 launches rotation diagram;

Figure 10 connects diagrammatic sketch for master rocker connecting rod buffering;

Figure 11 is the C-C ladder cut-away view of Figure 10;

Figure 12 is distribution oil pump-valve drive mechanism figure;

Figure 13 is the overall diagrammatic sketch of distribution oil circuit;

Figure 14 is the V-type engine diagrammatic sketch.

The component title is as follows among the figure: 1, connecting rod 2, the big end 3 of secondary-rocker, master rocker 4, secondary-rocker small end 5, piston 6, cylinder barrel 7, flywheel 8, bent axle 9, slave connecting rod 10, nut 11, balance staff 12, fixing bolt 13, Carburetor seat 14, roller 15, tooth bar 16, wobble gear 17, air distribution connector 18, starter motor 19, petrol pump cam 20, distributor cog wheel 21, oil cover 22, timing gear 23, distributor 24, suction tude 25, body 26, nut 27, roller shaft 28, platen 29, nut 30, bearing 31, oil pump 32, distribution pump 33, movable arm 34, crankshaft gear 35, belt pulley 36, crankshaft bearing 37, Carburetor 38, spring seat 39, spring 40, limit dais 41, lining 42, wheel hub 43; rocker-arm roller pin 44; bolt 45; nut 46; pin 47; spring 48; thrust bearing 49; oil duct 50; follow-up sleeve 51; servo support 52; servo-actuated plunger 53; spacing hole 54; cylinder cap 55; oiling valve 56; distribution pump plunger 57; distribution pump cam 58; distribution pump camshaft 59; distributor driving gear 60; transport pipe 61; fuel reserve tank 62; empty filter 63; valve cage 64; valve tappet 65; valve cam 66; timing sprocket 67; chain 68; breathing pipe

Now be described further in conjunction with instantiation.

First embodiment is four cylinder air cooling engines, mainly referring to Fig. 1-4.Its cylinder barrel 6 splits for horizontal both sides, is arranged above and below, the cylinder barrel afterbody is relative in twos; Between the cylinder barrel of both sides, establish the horizontal balance staff 11 of a vertical cylinder barrel center line, be symmetrical arranged the master rocker 3 of two vertical pendulum axis up and down with cylinder barrel axis corresponding position, the one end respectively with the balance staff rigid joint, the other end respectively with hold, distinguish hinged greatly with row's two cylinder rods 1 at same rocking arm length place; Also be provided with on balance staff and be rigidly connected with it and the vertical secondary-rocker 2,4 of its axis, the cantilever end 4 of secondary-rocker is hinged with an end of slave connecting rod 9.Plane, slave connecting rod place and link motion plane parallel, bent axle 8 is parallel with balance staff, is located at the balance staff below, is installing rod journal with slave connecting rod the other end corresponding positions, and hinged with the slave connecting rod the other end, link with transmission paries such as flywheel 7 and crankshaft gears respectively at the bent axle shaft end.Secondary-rocker is divided into big small end 2,4 two-part, holds 2 to rigidly connect with balance staff 11 greatly, is shaped on through hole in the brachium direction, and small end 4 bar portions are cylinder, sliding with big end through hole matches, and rod end is shaped on screw thread, matches with adjusting nut 10 after stretching out through hole; Big end extends along the bar length direction in the part of nut both sides, and the chute that is slidingly matched of formation and nut ring platform both ends of the surface, also be shaped on the lock(ing) bolt 12 and the locknut thereof on perpendicular rings platform plane in nut ring platform and chute cooperation place, be used for fixing by the long matching relationship of the determined secondary-rocker bar of adjusting nut.

The thrust of connecting rod realizes rotating output through master rocker 3, balance staff 11, secondary-rocker 2,4, slave connecting rod 9 and bent axle 8 during work, balance staff is swing in the transmission, when changing the locked position of secondary-rocker 2,4 adjusted nuts 10, the length of secondary-rocker changes, because of bent axle and crank length are fixed, pivot angle in the balance staff transmission then changes, and pivot angle diminished when promptly brachium increased, and the initial position-running length of piston also reduces thereupon, makes compression ratio to reduce in the cylinder barrel thereby make; The brachium of backward rotation adjusting nut, secondary-rocker 2,4 shortens, then compression ratio strengthens.

This example has increased balance staff 11 major and minor rocking arm 3,2,1 and slave connecting rods 9, changes the bearing position of bent axle, and has only a rod journal and two main journals, thereby can adopt rolling bearing 36(to see Fig. 6 in crankshaft support), reduce the transmission resistance; Therefore the length of bent axle also shortens, and under the constant substantially situation of other structure, has realized the structural design of opposed four cylinder adjustable compression ratio engines.

Second embodiment and first example are basic identical, mainly referring to Fig. 5,6.Gear 16, fixing by nut 29 wherein is housed on the balance staff 11, and balance staff is bearing on the body 25 through bearing 30.In opposite directions connecting rod tip part is all made tooth bar and 15, two wrist-pins end of connecting rod that are integrated then link to each other with separately piston, and section of rack and gear 16 mesh.For guaranteeing the engagement power transmission, being provided with 2 rollers 14 that are contained on the conical bearing at the tooth bar back, be used for limiting tooth bar 15 to increasing moving of tip clearance direction, conical bearing is fixed on the cylinder body 25 through roller shaft 27, two vertex of a cones are relative, and the roller shaft of the big end of bearing inner race end is shaped on screw thread, regulate its position on axle by nut 26, bearing outer ring is contained in roller 14 endoporus, the roller outer rim is the frustum side, and the frustum vertex of a cone of two-wheeled is relative, and links with the rolling of tooth bar back corresponding site.Rotating nut 26 changes the distance between two rollers, thereby changes the distance of tooth bar and roller shaft, can play and regulate and keep the effect of tooth bar correct engagement position.

Work hour rack connecting rod 15 makes gear movement with the thrust of piston through engagement, drives balance staff 11 swings, through secondary-rocker 2,4 slave connecting rods 9 bent axle 8 is rotated, and the adjusting of compression ratio is identical with first example; Roller has reduced keeps the surface friction drag that engagement produces.

This routine connecting rod rack is moving linearly only, the side pressure that does not almost have the crank-connecting rod transmission to bring to piston, engagement has the piston guide effect concurrently, event can reduce piston skirt length, creates conditions for increasing stroke or dwindling structure, has solved the problem of installing because of the wide inconvenience of opposed engine.

Other dependency structure of this routine motor is arranged as follows: carburetor assembly 37 still is contained on the connecting base 13 of intake manifold 24, and distribution still can make two distribution cam axles that set up separately at upper and lower sides finish (not drawing among the figure) or guaranteed by (seeing back the 6th example for details) such as distribution oil pumps 32,17 by timing gear; Place the bent axle of cylinder below to drive distribution oil pump 32(respectively and see the 6th example for details through crankshaft gear 34, timing gear 22), oil pump 31, petrol pump cam 19, distributor driving gear 59-gear 20 be to distributor 23, and having oil baffle disc 21 that transmission and oil end other parts are isolated, starter motor 18 still is contained in by the flywheel 17 gear ring sides.Basically form the motor integral arrangement of this programme, i.e. the adaptability of other dependency structure change content.

The 3rd example adopts and the identical structure of first example, mainly referring to Figure 10,11,14.Set up hinged with it 46 movable arm 33 at its master rocker middle part, movable arm moved end and connecting rod tip hinged 43, between movable arm movable end and master rocker cantilever end, pressure spring 39 is housed, its assembling length is by the shoulder position on the attachment bolt 44, nut 45 and lock pin decision, bolt 44 is got and the isometric corresponding points line of distance two arm articulating points direction, be shaped on the limit dais plane 40 that can be in contact with one another in two arm ends, this face was positioned at the plane of the center line of hinging shaft 46, the determining positions on two planes the minimum range between two arm inboards, promptly connect the reduction length of spring 39 minimums; Spring 39 presetting lengths are by transmission requirement decision, the maximum explosive force that transmits by connecting rod tip in the pretension elastic force＜cylinder operation of spring 39 and 〉=the transmission power that requires master rocker to export.

During work connecting rod at first promote movable arm 33, when the pretightening force of Driving force＜spring 39, spring is rigid joint, finishes transmission; When＞initial tension of spring, spring 39 at first is out of shape, and distortion stops to the Driving force balance time, and the Driving force after spring 39 distortion will be spread out of, and has realized slackening the transmission of excessive Driving force, plays buffer function.The effect degree of this connection can be adjusted by the method that changes spring work elastic force itself or limit dais plan-position.All the other working conditions of this example are identical with first example.

The 4th embodiment adopts the structure of second example, mainly referring to Fig. 5-9.Set up the resilient connection structure on the gear 16 of balance staff, concrete scheme is as follows.

The gear type master rocker is made gear ring 16 platens 28 and wheel hub 42 3 parts, and three parts are radially overlapping, and the interior aperture cover 41 of gear ring 16 is slidingly matched with wheel hub 42 appropriate sections, and wheel hub 42 links through key and balance staff 11, and is fixed by platen 28, nut 29.Wheel hub spoke and platen branch are located at the both sides of gear ring spoke; Offer circumferential short slot in the corresponding part of two spokes and platen, make spring 39 in the groove, flute length is the assembly pretightening length of spring 39.Work hour rack 15 drives gear ring 16 and rotates under piston promotes, spring is rigid joint when Driving force＜pretightening force, finishes transmission, drives the wheel hub platen and move simultaneously.Otherwise spring 39 produces distortion, finishes the resilient connection effect of buffering, after Driving force reduces, discharges portion of energy by recovering former assembling length again.All the other working conditions are ditto described.

The 5th example adopts another mode of above-mentioned resilient connection for the connecting rod master rocker, mainly schemes referring to 7-11.This routine spring 39 is when two spacing plane contact, elastic force is in correct Piston Compression position, can form the transmission power of the normal required spring of compression ratio in the cylinder, the assembling presetting length of spring is to end in exhaust, guarantees the minimum clearance that still has 〉=allow between piston and cylinder cap.Bolt, the determined active length of nut can be regulated according to matching requirements at this moment, and bolt can not wanted shoulder.Residual gas was minimum when this assembly relation made in the work exhaust, though the actual suction stroke of piston slightly reduces, total inflation effect still is enhanced; In compression stroke as actual compression ratio when not enough, can make it near recovering by spring 39 elastic force reactivity when the time comes,, can dwindle the deficiency of firing chamber, compensation actual compression ratio automatically as under disadvantageous venting conditions such as starting, idling or high speed, improve power, improve economic indicator.All the other are as precedent.

The 6th embodiment is in such scheme, the situation that adaptability changes is done in its distribution transmission, mainly referring to 12,13,5,6 figure.This example is set up a plunger pump 32 in crankcase, eight plungers 56 are divided into two groups, are radial uniform in two parallel transmission planes in the pump, by two cams, 57 drivings of distribution cam axle 58; Distribution cam axle transmits motivational drive by crankshaft gear 34, timing gear 22; Plunger base is provided with unidirectional check valve 55, check spring and piston spring 47 are equipped with in its top, and spring seat is bearing on the pump housing by thrust bearing 48, with sleeve lateral wall that plunger 56 cooperates on be provided with oil duct 49, difference is joint 17 grades and servo-actuated plunger 52 by the road, and follow-up sleeve 50 is communicated with; Follow-up sleeve and its bearing support 51 screw threads match, are fixed by locknut, by servo-actuated plunger and the transmission of valve stem end in contact; Have spacing hole 53 and communicate with the pressure oil circuit on the plunger sidewall, when spacing hole was exposed by socket end, oil circuit pressure began to reduce.

During work under crankshaft gear 34 drives through 22 58 cams 57 of gear, overcoming piston spring 47 pressure makes plunger up, cavity pressure raises, through closing with check spring acting in conjunction check valve, force pressure further to raise, finally promote valve opening by the servo-actuated plunger through oil duct 49, pipeline and joint 17; Spacing oilhole 53 when satisfying the valve opening requirement on the servo-actuated plunger begins to expose sleeve 50 end faces, and servo-actuated plunger actuation oil is in communication with the outside, stop motion and pressure release when pressure is reduced to the valve spring resistance balance; Driving cam 57 surfaces begin to reduce when needs are closed, the pressure that drives the liquid road descends, valve and servo-actuated post 52 begin to reset, all finish when resetting, cam still when descending the one-way valve 55 of distribution plunger 56 bottoms open, transmission fluid enters and drives the additional pressure release loss of oil circuit, in order to using next time.Associated components such as pressure release fluid Castor Oil valve.

This routine valve cam 57 only contacts with the half side part in plunger 56 bottom surfaces, makes gearing friction power between the two form moment to the axis of plunger 56.Plunger is except that with the cam lifting during work, also has because of swaying of giving birth to of moment, it can make the bottom surface open and decrease evenly, and the minimizing resistance.48 of thrust-bearings have further reduced rotational resistance.

This routine follow-up sleeve 50 can change the relative position of the two with the scyewed joint of body, thereby the servo-actuated plunger is changed for 52 action times, plays the effect regularly of adjusting.

This example also is provided with the pipeline 60 with valve cage 63 UNICOMs, and the pipeline outlet links to each other with the oil tank 61 that filter cleaner is housed, and filtered fluid flows to the distribution oil pump for usefulness by pipeline, forms and reveals recycling of fluid.Valve cage also has pipeline 68 to link to each other with empty filter 62 outlet sides sealing, thereby sets up the ambient pressure environment of this recycle oil.

This example has solved the influence that brings to engine air distribution system because of invention.

The 7th embodiment is a four-cylinder gasoline engine also, sees Figure 14.The cylinder barrel V-type is arranged, be provided with balance staff 11 in the cylinder barrel caudal directions, corresponding two pairs of master rockers 3 that the direction of falling V connection is housed on the axle, at an end that links with connecting rod, be provided with the elastic force direction elastic member consistent 39 with transmission direction, the two-part with master rocker link respectively, elastic member also is assembled into the pretension state.By applying pretightening force difference, can play buffer function respectively or dwindle combustion chamber volume automatically when descending because of actual volumetric efficiency, all the other structures are with preceding identical.

This routine distribution by chain-driven 66,67 drive the valve cam 65 that places between the cylinder of both sides, through servo-actuated post, tappet 64, rocking arm is finished the distribution transmission to valve.

This model machine compression ratio can be between 7: 1 to 20: 1 manual adjustment, realized that also various rotating speeds adjust automatically, compensate, actual compression at the end pressure reaches comparatively ideal state, experimental results show that this structure is feasible.

Claims (8)

1, motor comprises piston cylinder connecting rod crank mechanism, the distribution that holds on engine, supply, lubricated, cooling system, and power take-off mechanisms such as fly wheel assembly, normal transmission joint parts and the body that cooperates of each mechanism is characterized in that:

Set up balance staff 1 and slave connecting rod 9 at connecting rod 1 and 8 on bent axle, balance staff is bearing on the body, and its axis normal is in the link motion plane, and links with master rocker 3 rigidity with the connecting rod coplane, and the master rocker the other end connects with the connecting rod tip activity; Slave connecting rod 9 and link motion plane parallel, and and hinged with the secondary-rocker 2,4 of slave connecting rod coplane, the other end and the rod journal after the translation of slave connecting rod are hinged, the other end 2 and balance staff 11 rigid joint of secondary-rocker; Balance staff is done the swing around its axis under connecting rod promotes, through secondary-rocker 2,4, slave connecting rod 9, bent axle 8, outputed power with rotation formula by crankshaft gear 34, belt pulley 35 and flywheel 7;

In major and minor rocking arm 3,2,4, slave connecting rod 9, contain the controlling mechanism 2,4,10,12 that can change this bar active length;

Other does the adaptability change because of the relevant parts that the increase said mechanism influences the change in location that is connected and fixed thereupon, makes it still keep the function of former mechanism.

2, motor according to claim 1, it is characterized in that length adjustment mechanism is to transfer rod member to be divided into relatively-movable two-part 2,4 at the bar length direction desire, its relative position is fixed for the sliding pair and the control system thereof of this pole length direction by screw pair and fixed component 10,12 thereof or by the hydraulic control glide direction.

3, motor as claimed in claim 1 or 2, it is characterized in that master rocker is that gear or tooth sector 36, connecting rod tip are partly made tooth bar 15, linked with the master rocker engagement, the transmission position of connecting rod tip by link with it, the rolling member 14,26,27 of adjustable its engagement tip clearance guarantees.

4, motor as claimed in claim 1 or 2, it is characterized in that to the Transmitted chains of bent axle, being provided with the elastic force elastic transmission parts 39 consistent with being subjected to force direction by connecting rod, the pretension elastic force of elastic member is controlled at possible maximum delivered power and output requires between the transmission power, and its pretension length realizes normally-compacted length for making piston; Or its maximum compression elastic force is in correct Piston Compression position, can form the required transmission power of the normal compression ratio of motor, and be provided with the limit position part of maximum compression distance, the position of limit position part should guarantee to compress end piston is in finish the position that normal compression ratio compression ends, the pretension length of elastic member to be controlled to make exhaust at the end the piston cylinder cover gap within normal compression clearance and minimum allowed band gap.

5, as motor as described in the claim 3, it is characterized in that to the Transmitted chains of bent axle, being provided with the elastic force elastic transmission parts 39 consistent with being subjected to force direction by connecting rod, the pretension elastic force of elastic member is controlled at possible maximum delivered power and output requires between the transmission power, and its pretension length realizes normally-compacted length for making piston; Or its maximum compression elastic force is in correct Piston Compression position, can form the required transmission power of the normal compression ratio of motor, and the position that is provided with limit position part, the limit position part of maximum compression distance should guarantee to compress end piston is in finish the position that normal compression ratio compression ends, the pretension length of elastic member to be controlled to make exhaust at the end the piston cylinder cover gap within normal compression clearance and minimum allowed band gap.

6,, it is characterized in that comprising in the distribution driving mechanism of motor the oil hydraulic circuit 53 of hydraulic transmission part 32 and control hydraulic transmission position as motor as described in the claim 1,2 or 5.

7,, it is characterized in that comprising in the distribution driving mechanism of motor the oil hydraulic circuit 53 of hydraulic transmission part 32 and control hydraulic transmission position as motor as described in the claim 3.

8,, it is characterized in that comprising in the distribution driving mechanism of motor the oil hydraulic circuit 53 of hydraulic transmission part 32 and control liquid transmission position as motor as described in the claim 4.

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