CN107763061A

CN107763061A - Automobile, engine, toggle and its link assembly

Info

Publication number: CN107763061A
Application number: CN201610695089.7A
Authority: CN
Inventors: 王京堂
Original assignee: SAIC Motor Corp Ltd
Current assignee: SAIC Motor Corp Ltd
Priority date: 2016-08-19
Filing date: 2016-08-19
Publication date: 2018-03-06
Anticipated expiration: 2036-08-19
Also published as: CN107763061B

Abstract

A kind of automobile, engine, toggle and its link assembly, wherein link assembly include：Connecting rod, the connecting rod have small end of connecting rod and big end, and the big end has crank pin end pore；Eccentric bushing with eccentric orfice, the small end of connecting rod have the eccentric bushing mounting hole for accommodating eccentric bushing；Hydraulic unit driver with output shaft, located at the connecting rod, the output shaft is drive connection with the eccentric bushing, under hydraulic action, the output shaft can rotate around own central axis line and drive the eccentric bushing to be rotated around itself cylindrical axis by the drive connection, to change the eccentric orfice to the distance of the crank pin end pore.The link assembly of the technical program can realize that engine compression ratio is variable.

Description

Automobile, engine, toggle and its link assembly

Technical field

The present invention relates to automobile technical field, more particularly to a kind of automobile, engine, toggle and its connection rod set Part.

Background technology

Automobile engine includes toggle, and the function of toggle is to be changed into the reciprocating motion of piston The rotary motion of engine crankshaft, while the power that will act on piston is changed into the torque that engine crankshaft externally exports, with Automotive wheel is driven to rotate.According to the engine thermal efficiency theoretical formula η=1-1/CR with toggle^(K-1)(η is heat Efficiency, CR are compression ratio, and K is adiabatic exponent), the larger compression ratio of engine can obtain the larger thermal efficiency.But sending out When motivation is in full load mode, limited by the condition such as parts intensity and Engine Knock in engine, the pressure of engine Contracting is than can not be too big.Preferable state is, when engine is in partial load condition, use larger compression ratio with obtain compared with The high thermal efficiency, and using less compression ratio to obtain larger power and moment of torsion during full load.But the pressure of available engine Contracting is than being immutable, and therefore, the alterable compression ratio for making engine is a kind of direction of alternate-engine development.

The content of the invention

The present invention solves the problems, such as it is that the compression ratio of available engine is immutable.

To solve the above problems, the present invention provides a kind of link assembly, the link assembly includes：Connecting rod, the connecting rod tool There are small end of connecting rod and big end, the big end has crank pin end pore；

Eccentric bushing with eccentric orfice, the small end of connecting rod have the eccentric bushing mounting hole for accommodating eccentric bushing；

Hydraulic unit driver with output shaft, located at the connecting rod, the output shaft is drive connection with the eccentric bushing, Under hydraulic action, the output shaft can rotate around own central axis line and be driven by the drive connection described inclined Heart set rotates around itself cylindrical axis, to change the eccentric orfice to the distance of the crank pin end pore.

Alternatively, in addition to：Reversing control valve, located at the connecting rod, for connecting engine crankshaft internal oil channel with to institute Hydraulic unit driver output hydraulic pressure oil is stated, the reversing control valve has first position and the second place；

When the hydraulic oil of engine crankshaft internal oil channel output is higher than predetermined value, the reversing control valve is in described first Position, the output shaft of the hydraulic unit driver are rotated in a first direction, to reduce the eccentric orfice to the crank pin end pore Distance；

When the hydraulic oil of engine crankshaft internal oil channel output is less than the predetermined value, the reversing control valve is in described The second place, the output shaft of the hydraulic unit driver rotate in a second direction, to increase the eccentric orfice to the big end The distance in hole, the first direction and second direction are two opposite directions.

Alternatively, the hydraulic unit driver includes：

Housing with rotor chamber；

Rotor, in the rotor chamber and coaxially connected with the output shaft, the lateral wall of the rotor is provided with some Chute, all chutes are arranged around rotor shaft；

Some blades, corresponding to insertion in the chute, it can be moved to along the depth direction of the chute and described turn The inwall contact of sub- chamber seals and separates the rotor chamber is at least divided into adjacent first for multiple driving chambers, all driving chambers Group driving chamber and second group of driving chamber；

In said first direction, the blade at the respective both ends of first group of driving chamber and second group of driving chamber can connect When touching the rotor cavity wall, the length of chute is different where being stretched out along the depth direction of place chute；

The reversing control valve connects first group of driving chamber and engine crankshaft internal oil channel at the first position And the hydraulic oil in second group of driving chamber discharges, the blade is driven the rotor by hydraulic pressure along the first party To rotation；

The reversing control valve connects second group of driving chamber and engine crankshaft internal oil channel at the second place And the hydraulic oil in first group of driving chamber discharges, the blade is driven the rotor by hydraulic pressure along the second party To rotation.

Alternatively, the rotor chamber is circular hole, and the rotor is set for the eccentric with the circular hole.

Alternatively, the rotor chamber is elliptical aperture or waist-shaped hole；

First group of driving chamber and second group of driving chamber be included in the radial direction of the rotor back to and set to Few a pair of driving chambers.

Alternatively in first group of driving chamber and second group of driving chamber, each pair in every group of driving chamber is driven Chamber, the rotor are provided with connecting hole to connect this pair of driving chambers.

Alternatively, the housing is fixedly connected with the outer surface of the connecting rod.

Alternatively, the outer peripheral face of the housing is provided with the first housing oilhole and the second housing oilhole, the first housing oil Hole connects first group of driving chamber and the second housing oilhole connects second group of driving chamber；

The reversing control valve connects oil in the first housing oilhole and engine crankshaft at the first position Road, and the hydraulic oil in second group of driving chamber discharges through the second housing oilhole；

The reversing control valve connects oil in the second housing oilhole and engine crankshaft at the second place Road, and the hydraulic oil in first group of driving chamber discharges through the first housing oilhole.

Alternatively, the rotor chamber has assembling entrance, and rotor cover is provided with the assembling entrance；

The rotor cover is provided with rotor cover oilhole, and the reversing control valve connects the rotor cover oilhole and all cunnings Groove.

Alternatively, the housing is a part for the connecting rod, and the rotor chamber is in the connecting rod.

Alternatively, first group of driving chamber has the first opening for being facing axially away from the output shaft along the rotor End, and second group of driving chamber has along the second openend for being facing axially away from the output shaft of the rotor；

The connecting rod has：Connect the second connecting rod oilhole of first openend and connect the of second openend Three connecting rod oilholes；

The reversing control valve connects oily in the second connecting rod oilhole and engine crankshaft at the first position Road, and the hydraulic oil in second group of driving chamber discharges through the third connecting rod oilhole；

The reversing control valve connects oily in the third connecting rod oilhole and engine crankshaft at the second place Road, and the hydraulic oil in first group of driving chamber discharges through the second connecting rod oilhole.

Alternatively, the connecting rod includes the Part I with the small end of connecting rod and second with the big end Part, the Part I and Part II are split type composition；

The second connecting rod oilhole and the third connecting rod oilhole are located at the Part II.

Alternatively, internal thread part is provided with one of in the Part I and the Part II and another part is set There is external thread part, the internal thread part and the external thread part are that screw thread coordinates to connect the Part I and Part II.

Alternatively, the Part I is provided with the internal thread part and the Part II is provided with the external thread part；

The rotor chamber is located at the Part I, and connects the internal thread part；

The second connecting rod oilhole and the third connecting rod oilhole pass through the external thread part.

Alternatively, the second connecting rod oilhole the external thread part face the rotor chamber end face form first oil Groove, first oil groove lead to all driving chambers in first group of driving chamber；And

The third connecting rod oilhole forms the second oil groove in the end face, and second oil groove leads to second group of drive All driving chambers in dynamic chamber.

Alternatively, the Part I is provided with external thread part and the Part II is provided with internal thread part；The rotor chamber Connected located at the Part II, and with the internal thread part；The external thread part is provided with output shaft receiving hole, the output shaft It is Worm Wheel System through the output shaft receiving hole and the periphery of the eccentric bushing.

Alternatively, the connecting rod is provided with control valve mounting hole, and the reversing control valve is contained in the control valve mounting hole It is interior and coaxial with the control valve mounting hole；The second connecting rod oilhole and the third connecting rod oilhole are installed along the control valve The axial arranging in hole, and extend through the hole wall through the mounting hole.

Alternatively, the control valve mounting hole has axial both ends open, and bonnet is respectively equipped with two openings；Institute Multiple card bases that bonnet includes being covered on the cap of the opening and being connected with the cap are stated, the card base is arranged in institute In the hole wall for stating control valve mounting hole, hydraulic oil is outside the gap discharge control valve mounting hole between the two neighboring card base.

Alternatively, the control valve mounting hole is respectively equipped with connecting rod outage in the hole wall at axial both ends, and described second Connecting rod oilhole and the hydraulic oil of third connecting rod oilhole discharge are respectively through corresponding connecting rod outage to outside reversal valve mounting hole Discharge.

Alternatively, there is rotor hole, the rotor hole connects all chutes, the reversing control valve in the rotor All the time engine crankshaft internal oil channel and the rotor hole are connected.

Alternatively, rotor shaft direction of the chute along the rotor is divided into the first pilot trench and the second pilot trench, first son For groove between second pilot trench and the rotor hole, first pilot trench is deeper than second pilot trench.

Alternatively, be provided with elastic component in the chute, the elastic component applies elastic force to the blade, the blade by Elastic force and contact sealing with the inwall of the rotor chamber.

Alternatively, the small end of connecting rod is provided with first microcephaly's oilhole and second microcephaly's oilhole；The first microcephaly oilhole connects Lead to first group of driving chamber and the eccentric bushing mounting hole；The second microcephaly oilhole connects second group of driving chamber and institute State eccentric bushing mounting hole.

Alternatively, the periphery of the eccentric bushing is provided with the first eccentric bushing oilhole and the second eccentric bushing oilhole, and described first Eccentric bushing oilhole and the second eccentric bushing oilhole connect the eccentric orfice；

When the reversing control valve is in the first position, the first eccentric bushing oilhole and the described first small hair oil Hole connects, and the second eccentric bushing oilhole does not connect with the second microcephaly oilhole；

When the reversing control valve is in the second place, the second eccentric bushing oilhole and the described second small hair oil Hole connects, and the first eccentric bushing oilhole does not connect with the first microcephaly oilhole.

Alternatively, the periphery of the eccentric bushing is provided with eccentric bushing oil groove, and the eccentric bushing oil groove is along the eccentric bushing Outer circumferentially extending, the first eccentric bushing oilhole connect the bottom of the eccentric bushing oil groove；The outer peripheral face of the small end of connecting rod is set There is the microcephaly's outage for connecting the eccentric bushing mounting hole；It is described inclined when the reversing control valve is in the first position Heart set oil groove connects the first microcephaly oilhole and microcephaly's outage.

Alternatively, the connecting rod is formed for integral type, and connecting rod chamber is provided with the connecting rod, and the hydraulic unit driver is located at In the connecting rod chamber；The connecting rod chamber has the assembling entrance positioned at major part inner headed face, and intraoral major part is provided with described be fitted into Cap, the reversing control valve is in the major part cap and the connecting rod.

Alternatively, described be connected is：

The output shaft has worm tooth；Some worm-gear toothings, the worm-gear toothing edge are provided with the periphery of the eccentric bushing The outer of the eccentric bushing is circumferentially arranged；The worm tooth engages with the worm-gear toothing.

Alternatively, the outer peripheral face of the small end of connecting rod is provided with small head bore, and the small head bore connects the eccentric bushing mounting hole And expose the periphery of the eccentric bushing, to cause the periphery of the output shaft of the hydraulic unit driver and the eccentric bushing For Worm Wheel System.

Alternatively, the big end has major part inner headed face, and bearing shell, the connecting rod are provided with the major part inner headed face Major part coats engine crankshaft by the bearing shell；The bearing shell has bearing shell inner headed face, and the bearing shell inner headed face is provided with bearing shell Oil groove, the bearing oil-groove extend around engine crankshaft and are suitable to connect engine crankshaft internal oil channel.

Alternatively, the connecting rod is provided with first connecting rod oilhole, and the first connecting rod oilhole connects the bearing oil-groove and led to To the hydraulic unit driver.

Alternatively, the bearing shell has bearing shell periphery, in the bearing shell periphery and the major part inner headed face, wherein One disc is provided with boss and another disc is provided with locating slot, and the boss is arranged in the locating slot.

Alternatively, the reversing control valve includes：

Valve body, there is axially spaced elastic component chamber and valve-rod cavity and separate the elastic component chamber and the valve-rod cavity Cut-off portion, the outer peripheral face of the valve body are provided around the annular valve body oil groove of the spindle of valve body line, and the valve body oil groove is used for All the time engine crankshaft internal oil channel is connected, the valve body has the valve body oilhole for connecting the valve body oil groove and the valve-rod cavity； Elastic component, it is limited to the elastic component intracavitary；Valve rod, it is limited in the valve-rod cavity；

When the hydraulic oil of engine crankshaft internal oil channel input is higher than predetermined value, hydraulic oil in the valve body oil groove is from institute State valve body oilhole and flow into the valve-rod cavity, drive the valve body to be squeezed towards the lateral movement of elastic component one, the elastic component Deformation, the reversing control valve are in the first position；

When the hydraulic oil of engine crankshaft internal oil channel input is less than predetermined value, the elastic component drives the valve body direction The lateral movement of valve rod one, the hydraulic oil in the valve-rod cavity are discharged in the valve body oil groove from the valve body oil oilhole, institute State reversing control valve and be in the second place.

Alternatively, the connecting rod is provided with control valve mounting hole, and the reversing control valve is contained in the control valve mounting hole It is interior；The control valve mounting hole has axial both ends open, and bonnet is provided with the opening；The both ends of the elastic component limit respectively It is scheduled in the elastic component chamber and the corresponding bonnet；The valve rod is fixed on another corresponding bonnet.

The present invention provides a kind of toggle, and the toggle includes the link assembly described in above-mentioned one.

The present invention provides a kind of engine, and the engine includes toggle described above.

The present invention provides a kind of automobile, and the automobile includes engine described above.

Compared with prior art, technical scheme has advantages below：

Eccentric bushing mounting hole is provided with connecting rod small end hole to accommodate eccentric bushing, the inner circle of eccentric bushing and cylindrical decentraction.Liquid The output shaft of pressure driver can rotate under hydraulic-driven, and drive eccentric bushing around itself cylindrical axis by being connected Rotary motion, this can change the distance of eccentric orfice and crank pin end pore, therefore, inner circle axis and crank pin end pore axis The distance of line is variable.Thus, it is contemplated that when small end of connecting rod connects piston, inner circle axis and company can be adjusted The distance of bar big end hole axis, so as to change the active length of connecting rod, change the top dead center position that piston is run in cylinder, Adjust engine compression ratio.

For example, when engine is in full load, shorten eccentric orfice to the distance of crank pin end pore, the active length of connecting rod Shorten, the top dead centre that piston is run in cylinder moves down, and reduces engine compression ratio to obtain larger power and moment of torsion. When engine is in operation at part load, the distance of increase eccentric orfice to crank pin end pore, the active length increase of connecting rod, piston The top dead centre run in cylinder moves up, and increases engine compression ratio to obtain the higher thermal efficiency.

Therefore, in the technical program link assembly, the active length of connecting rod is adjustable, so as to change the upper of engine inner carrier Dead-centre position, and then according to engine operating load, realize engine compression ratio two-stage variable.

Brief description of the drawings

Fig. 1 is the exploded view of the link assembly of first embodiment of the invention；

Fig. 2 is that the link assembly of first embodiment of the invention changes the schematic diagram of engine compression ratio；

Fig. 3 is in the link assembly of first embodiment of the invention, and the Part II of connecting rod and the assembling structure of rotor are illustrated Figure；

Fig. 4 is that the structure that the link assembly reversing control valve of first embodiment of the invention cooperates with hydraulic unit driver is shown It is intended to；

Fig. 5 is in link assembly shown in Fig. 1, located at the stereogram of the bearing shell of big end inner headed face；

Fig. 6 is the valve body stereogram of reversing control valve in link assembly shown in Fig. 1；

Fig. 7 is sectional view of the valve body shown in Fig. 6 along GG directions；

In link assembly shown in Fig. 8 Fig. 1, the bonnet stereogram of reversing control valve；

Fig. 9 is the stereogram of the Part I of connecting rod in link assembly shown in Fig. 1；

Figure 10 is the operation principle schematic diagram of hydraulic unit driver in link assembly shown in Fig. 1；

Figure 11 is the stereogram of the Part II of connecting rod in link assembly shown in Fig. 1；

Figure 12 is sectional views of the Figure 11 along HH directions；

Figure 13 is the plan view of the Part II of connecting rod shown in Figure 11, and the plan view is from external thread part side along axle Obtained to seeing to Part II；

Figure 14 is the sectional drawing of rotor in hydraulic unit driver in link assembly shown in Fig. 1；

Figure 15 is the stereogram of the Part I in connecting rod in link assembly shown in Fig. 1；

Figure 16 is profile of the Part I along JJ directions in connecting rod shown in Figure 15；

Figure 17 is the sectional drawing of eccentric bushing in link assembly shown in Fig. 1；

Figure 18 is eccentric bushing and connecting rod matching relationship schematic diagram in link assembly shown in Fig. 1；

In link assembly shown in Figure 19 Fig. 1, the stereogram of eccentric bushing；

Figure 20 be second embodiment of the invention link assembly in connecting rod an exploded view；

Figure 21 be second embodiment of the invention link assembly in connecting rod another exploded view；

Figure 22 be second embodiment of the invention link assembly in hydraulic unit driver operation principle schematic diagram；

Figure 23 be second embodiment of the invention link assembly in hydraulic unit driver rotor sectional drawing；

Figure 24 is the stereogram of connecting rod in the link assembly of third embodiment of the invention；

Figure 25 is the exploded view of connecting rod in the link assembly of third embodiment of the invention；

Figure 26 is the stereogram of major part cap in connecting rod shown in Figure 25；

Figure 27 is the sectional drawing of major part cap shown in Figure 26；

Figure 28 be fourth embodiment of the invention link assembly in connecting rod stereogram；

Figure 29 be fourth embodiment of the invention link assembly in hydraulic unit driver show with what reversing control valve cooperated It is intended to；

Figure 30 be fourth embodiment of the invention link assembly in rotor sectional drawing；

Figure 31 is the stereogram of rotor cover in hydraulic unit driver in Figure 28.

Embodiment

It is understandable to enable the above objects, features and advantages of the present invention to become apparent, below in conjunction with the accompanying drawings to the present invention Specific embodiment be described in detail.

First embodiment

Automobile engine includes toggle, and toggle includes engine crankshaft and link assembly.

Reference picture 1, link assembly includes：Connecting rod 1, the eccentric bushing 2 with eccentric orfice 20 and the hydraulic pressure with output shaft 30 Driver 3.Connecting rod 1 has small end of connecting rod 10 and big end 11, and small end of connecting rod 10 is used for the piston stretched into cylinder It is interior and connect piston (not shown), big end 11 be used for coating the rod journal of engine crankshaft with engine crankshaft It is connected.

With reference to Fig. 2, big end 11 has crank pin end pore 13.Small end of connecting rod 10 is provided with eccentric bushing mounting hole 12 to accommodate Eccentric bushing 2.The inner circle 21 of eccentric bushing 2 and cylindrical 22 decentraction, the interior center of circle O of inner circle 21₁With cylindrical 22 outer center of circle O₂Radial direction phase Every.Cylindrical the 22 of eccentric bushing 2 have apart from interior center of circle O₁Farthest distal end C₁With apart from interior center of circle O₁Nearest near-end C₂.Connecting rod Microcephaly 10 is stretched into piston, connects piston and small end of connecting rod 10 through eccentric orfice 20 using bearing pin (not shown), the pin Axle and inner circle 21 are coaxial.

Reference picture 1 simultaneously combines Fig. 3, and hydraulic unit driver 3 can be located at connecting rod 1, and output shaft 30 connects with eccentric bushing 2 for transmission Connect.Under hydraulic action, output shaft 30 can be rotated around own central axis line A and by be connected drive eccentric bushing 2 Rotated B around itself cylindrical 22 axis, to change the distance that eccentric orfice 20 arrives crank pin end pore 13.

Inner circle 21 and cylindrical 22 decentraction due to eccentric bushing 2, therefore eccentric bushing 2 rotates around itself cylindrical 22 axis Move B, the distance of the axis 21 of inner circle 21 and the axis of crank pin end pore 13 is variable, therefore can change eccentric orfice 20 with The distance of crank pin end pore 13.Thus, it is contemplated that the active length so as to changing connecting rod 1, can change piston in cylinder The top dead center position of interior operation, adjust engine compression ratio.The active length of wherein connecting rod 1 refers to that the axis of eccentric orfice 20 is arrived The distance of the axis of crank pin end pore 13.

For example, with reference to reference picture 2 (a), when full engine load is run, cylindrical 22 distal end C of eccentric bushing 2₁It is located at Near-end C₂Top, the interior center of circle O of eccentric bushing 2₁Positioned at outer center of circle O₂Lower section, eccentric orfice 20 arrive crank pin end pore 13 distance Recently, the active length L of connecting rod 1₁It is most short.Now, the top dead centre that piston is run in cylinder moves down, and the compression ratio of engine is most It is small, to obtain larger power and moment of torsion.

With reference to Fig. 2 (b), when part load engine is run, cylindrical 22 distal end C of eccentric bushing 2₁Positioned at near-end C₂'s Lower section, the interior center of circle O of eccentric bushing 2₁Positioned at outer center of circle O₂Top, eccentric orfice 20 to crank pin end pore 13 distance it is farthest, connecting rod 1 active length L₂It is most long.Now, the top dead centre that piston is run in cylinder moves up, and this can increase the compression ratio of engine To obtain the higher thermal efficiency.

Thus, it is contemplated that the active length scope of connecting rod 1 is in L₁With L₂Between it is adjustable, it is living so as to change in engine Dead-centre position beyond the Great Wall, so as to change the top dead center position of engine inner carrier, and then started according to engine operating load, realization Machine compression ratio two-stage variable.

Reference picture 1 simultaneously combines Fig. 4, and link assembly also includes reversing control valve 4, and reversing control valve 4 is located at connecting rod 1.Commutation Control valve 4 is used to connect engine crankshaft internal oil channel (not shown) with input hydraulic pressure oil, and exports liquid to hydraulic unit driver 3 Force feed, reversing control valve 4 have the first position shown in Fig. 4 (a) and the second place shown in Fig. 4 (b)；

With reference to reference picture 2 (a) and Fig. 4 (a), when the hydraulic oil of defeated engine crankshaft internal oil channel output is higher than predetermined value, Reversing control valve 4 is in first position, and the output shaft 30 of hydraulic unit driver 3 is rotated in a first direction (with reference to Fig. 3), inclined to reduce The distance of crank pin end pore 13 is arrived in heart hole 20.Wherein, first direction is one of direction of rotation of rotary motion A shown in Fig. 3.

In this process, the outer center of circle O of eccentric bushing 2₂Distance to crank pin end pore 13 is constant.Eccentric bushing 2 it is cylindrical 22 distal end C₁Motion and near-end C upwards₂Move downward, the interior center of circle O of eccentric bushing 2₁Can around cylindrical 22 outer center of circle O₂Rotation Move downward, the distance of eccentric orfice 20 to crank pin end pore 13 is gradually reduced.To cylindrical 22 distal end C of eccentric bushing 2₁Positioned near Hold C₂Top, the interior center of circle O of eccentric bushing 2₁Positioned at outer center of circle O₂Lower section, eccentric orfice 20 to crank pin end pore 13 distance most It is small, the active length L of connecting rod 1₁It is most short.Now, the bearing pin for being contained in the eccentric orfice 20 of eccentric bushing 2 and connecting piston moves down, The top dead centre that piston is run in cylinder moves down, and this can reduce the compression ratio of engine.

With reference to shown in Fig. 2 (b) and Fig. 4 (b), when the hydraulic oil of engine crankshaft internal oil channel output is less than predetermined value, change The second place is in control valve 4, the output shaft 30 of hydraulic unit driver 3 rotates in a second direction (with reference to Fig. 3), to increase bias The distance of crank pin end pore 13 is arrived in hole 20.First direction and second direction are two opposite directions.

In this process, the outer center of circle O of eccentric bushing 2₂Distance to crank pin end pore 13 is constant.Eccentric bushing 2 it is cylindrical 22 distal end C₁Move downward and near-end C₂Motion upwards, the interior center of circle O of eccentric bushing 2₁Can be around outer center of circle O₂Rotate up fortune It is dynamic.To cylindrical 22 distal end C of eccentric bushing 2₁Positioned at near-end C₂Lower section, the interior center of circle O of eccentric bushing 2₁Positioned at outer center of circle O₂It is upper Side, the distance of eccentric orfice 20 to crank pin end pore 13 is maximum, the active length L of connecting rod 1₂It is most long.Now, it is contained in eccentric bushing 2 Eccentric orfice 20 in and connection piston bearing pin move up, the top dead centre that piston is run in cylinder moves up, and this can increase and start The compression ratio of machine.

Hydraulic oil in engine crankshaft internal oil channel comes from engine lubrication system, therefore the hydraulic oil is lubricating oil. When engine is in full load operation, control engine lubrication system output hydraulic oil, hydraulic oil oil out of engine crankshaft Road is input to reversing control valve 4, and reversing control valve 4 is in first position, reduces engine compression ratio to obtain larger power And moment of torsion.

When engine is in operation at part load, control engine lubrication system output low pressure oil, low pressure oil is from starting Machine crankshaft internal oil channel is input to reversing control valve 4, and reversing control valve 4 is in the second place, increases engine compression ratio to obtain The higher thermal efficiency.

It should be noted that can be without must between the hydraulic oil pressure and engine load of engine lubrication system output Right correlation, engine lubrication system are controlled by the controlling organization of itself.Generally, when engine is in full load operation When, independent controlling organization can control the grease pump in engine lubrication system outwards to pump hydraulic oil；At engine When operation at part load, independent controlling organization can control grease pump outwards to pump low pressure oil.This independent control Mechanism can be automobile ECU.

The predetermined value is the minimum value that position switching can occur for reversing control valve 4, and reversing control valve 4 can occur The opportunity of position switching is determined by specific engine type, therefore can be commutated according to engine type come reasonable selection Control valve 4 so that reversing control valve 4 can the full engine load run to operation at part load or it is opposite when, can Timely switching position.

Reference picture 3 and Fig. 4, connecting rod 1 are provided with first connecting rod oilhole 1a, and first connecting rod oilhole 1a is suitable to connection engine crankshaft Internal oil channel and reversing control valve 4.Big end 11 has major part inner headed face 110, and the major part inner headed face 110 is cladding engine song The surface of axle connecting rod neck, first connecting rod oilhole 1a pass through major part inner headed face 110.Engine crankshaft internal oil channel outwards sprays hydraulic pressure Oil, the hydraulic oil are inputted in first connecting rod oilhole 1a.Connecting rod 1 is provided with control valve mounting hole 15, and first connecting rod oilhole 1a is by hydraulic pressure Oily input control valve mounting hole 15, and it is conveyed to reversing control valve 4.

Generally, bearing shell is installed in major part inner headed face 110, it is bent that major part inner headed face 110 can coat engine by bearing shell Axle connecting rod neck, bearing shell play wear-resisting, connection, support and gearing.With reference to Fig. 5, bearing shell 14 has bearing shell inner headed face 140, bearing shell Inner headed face 140 is provided with bearing oil-groove 141, and the bottom of bearing oil-groove 141 can have bearing bush oil hole 142.Bearing oil-groove 141 is around hair Motivation crank-shaft link neck extends and connects engine crankshaft internal oil channel, first connecting rod oilhole 1a can be aligned bearing bush oil hole 142 with Connect bearing oil-groove 141.Bearing oil-groove 141 can have reasonable arc length fully to preserve hydraulic oil, ensure to have and lead to commutation The sufficient hydraulic oil fuel delivery of control valve 4.

Boss 144 is provided with the periphery 143 of bearing shell 14, corresponding locating slot 111 (knot is provided with major part inner headed face 110 Close Fig. 3), boss 144 can be contained in locating slot 111, and it is spacing to be positioned the institute of groove 111.When bearing shell 14 is arranged in major part When in disc 110, the boss 144 of bearing shell 14 is stuck in the locating slot 111 of big end 11, to prevent bearing shell 14 from rotating.Now, The bearing bush oil hole 142 of the bottom of bearing oil-groove 141 can be directed at first connecting rod oilhole 1a.When bearing shell 14 has good stability, First connecting rod oilhole 1a can remain alignment with bearing bush oil hole 142.

In addition, bearing shell periphery can be provided with locating slot and major part inner headed face can be provided with boss, and boss can block In locating slot.Thus, it is contemplated that in the bearing shell periphery and the major part inner headed face, one of disc Boss can be provided with and another disc can be provided with locating slot, the boss is arranged in the locating slot.

Reference picture 1, reversing control valve 4 include：Valve body 41, elastic component 42 and valve rod 43.

With reference to Fig. 6 and Fig. 7, valve body 41 has axially spaced elastic component chamber 410 and valve-rod cavity 411 and separates elastic component The cut-off portion 412 of chamber 410 and valve-rod cavity 411.The outer peripheral face 413 of valve body 41 is provided around the annular valve body oil of the axis of valve body 41 Groove 414, valve body oil groove 414 are used to connect engine crankshaft internal oil channel all the time.Valve body 41 has connection valve body oil groove 414 and valve rod The valve body oilhole 41a of chamber 411.

With reference to Fig. 4 (a), elastic component 42 is limited in elastic component chamber 410, and valve rod 43 is limited in valve-rod cavity 411.When starting The hydraulic oil of machine crankshaft internal oil channel input is when being higher than predetermined value, the hydraulic oil in valve body oil groove 414 from valve body oilhole 41a (with reference to Valve-rod cavity 411 Fig. 7) is flowed into, cut-off portion 412 is more than the elastic force of elastic component 42 by hydraulic oil hydraulic pressure in valve-rod cavity 411.Therefore, it is high Hydraulic fluid force feed drives valve body 41 towards the lateral movement of elastic component 42 1 by cut-off portion 412.Cut-off portion 412 extrudes elastic component 42 and occurred Elastic deformation.Valve body 41 moves to valve body oil groove 414 and is in left side, the first position of corresponding reversing control valve 4.

With reference to Fig. 4 (b), when the hydraulic oil of engine crankshaft internal oil channel input is less than predetermined value, cut-off portion 412 is by valve rod Hydraulic oil hydraulic pressure is less than the elastic force of elastic component 42 in chamber 411.Therefore, the deformation release of elastic component 42, is driven by cut-off portion 412 Valve body 41 is towards the lateral movement of valve rod 43 1.Cut-off portion 412 extrudes the hydraulic oil in valve-rod cavity 411 in motion, in valve-rod cavity 411 Hydraulic oil be discharged to from valve body oilhole 41a (with reference to Fig. 7) in valve body oil groove 414.Valve body 41 moves to valve body oil groove 414 and is in Right side, reversing control valve 4 are switched to the second place from first position.

Elastic component 42 can be helical spring.The hollow knot that valve rod 43 can be designed as one end closing and the other end opens wide Structure, this can reduce the weight of valve rod 43, can also save material.Reference picture 7, valve body oilhole 41a can be a pair of holes, or It is more porous.More hole can make to keep identical hydraulic pressure between valve-rod cavity 411 and valve body oil groove 414.

Reference picture 1, connecting rod 1 are provided with control valve mounting hole 15, and reversing control valve 4 is contained in control valve mounting hole 15.Knot Fig. 3 and Fig. 4 is closed, control valve mounting hole 15 has axial both ends open 150, and (the Fig. 3 of bonnet 16 is respectively equipped with two openings 150 It is not shown).Elastic component 42 be limited in elastic component chamber 410 and with the bonnet (bonnet 16 in left side) of homonymy axially against.Valve rod 43 are fixed on another bonnet (bonnet 16 on right side) of homonymy.

Reference picture 8 simultaneously combines Fig. 4, and bonnet 16 includes the lid for being covered on the opening 150 (reference picture 3) of control valve mounting hole 15 Portion 160 and the multiple card bases 161 being connected with cap 160, card base 161 can be arranged in the hole wall of control valve mounting hole 15. Neck (non-label in figure) is provided with the hole wall of control valve mounting hole 15, in assembling, the controlled valve mounting hole 15 of card base 161 Hole wall extruding and Light deformation radially inward, to enter in control valve mounting hole 15.Backward control valve mounting hole 15 in push away Pressure valve lid 16, card base 161 is slipped into neck and deformation release, to be arranged in neck.

Bonnet 16 also includes；The fixed part 162 for being connected and axially extending with cap 160.In assembling, fixed part 162 It is projecting axially into control valve mounting hole 15.Fixed part 162 has multiple, and all fixed parts 162 are around control valve mounting hole The circumferential direction arrangement of 15 axis, defines limit space 163.

In the position of elastic component 42 in left side, the respective end of elastic component 42 is limited in limit space 163, all fixed parts 162 clamp elastic component 42 to prevent elastic component 42 from radially beating, and elastic component 42 has good stability.Valve rod 43 on right side Position, the respective end of valve rod 43 are limited in limit space 163, and valve rod 43 can be avoided radially to beat.

Fixed part 162 circumferentially can be arranged alternately in direction with card base 161.

Reference picture 1, hydraulic unit driver 3 include：Housing 32 (reference picture 9) with rotor chamber 320 if, rotor 33 and cured leaf Piece 34 and the output shaft 30 coaxially connected with rotor 33.

With reference to Fig. 9, housing 32 is a part for connecting rod 1, and rotor chamber 320 is formed in connecting rod 1.

With reference to Figure 10, rotor 33 is located in rotor chamber 320, for driving the synchronous rotary of output shaft 30, the outside of rotor 33 Wall 330 is provided with some chutes 331, and all chutes 331 are arranged around the rotating shaft of rotor 33.All blades 34 insert corresponding chute In 331, it can be moved to along the depth direction E of chute 331 and sealing be contacted with the inwall of rotor chamber 320 321 and by rotor chamber 320 Along the direction of rotation A of rotor 33₁A₂Separate and be at least divided into first group of adjacent driving chamber 35a for multiple driving chambers 35, driving chamber 35 With second group of driving chamber 35b.

Reference picture 10 (a) simultaneously combines Fig. 4 (a), arrow f in Fig. 4 (a)₁And f₂For running of hydraulic power oil path, in commutation control In valve 4, the inwall of valve body oil groove 414 and control valve mounting hole 15 surrounds oil pocket, and first connecting rod oilhole 1a inputs into the oil pocket Hydraulic oil.When reversing control valve 4 is located at left side in the first position, valve body oil groove 414.Pass through valve body oil groove 414, commutation control Valve 4 processed connects first group of driving chamber 35a and engine crankshaft internal oil channel.The hydraulic oil of engine crankshaft internal oil channel is along path f₁It is defeated Enter into first group of driving chamber 35a.Hydraulic oil in right side, second group of driving chamber 35b is along path f₂Flow back to control valve installation In hole 15, and discharged through the gap between two neighboring card base 161 in bonnet 16 outside control valve mounting hole 15.Therefore, commutation control Valve 4 processed connects first group of driving chamber 35a and engine crankshaft internal oil channel at first position, and in second group of driving chamber 35b Hydraulic oil discharges.

In this course, blade 34 by hydraulic pressure and rotor driven 33 and output shaft 30 (reference picture 1) A in the first direction₁ Turn clockwise.

Rotor chamber 320 is circular hole, and rotor 33 is set for the eccentric with circular hole.First group of adjacent driving chamber 35a and second group Driving chamber 35b is separated by the first blade 34a and the second blade 34b.Due to bias, the first blade 34a is along where it The depth direction E of chute 331 stretches out the long length of respective slide slots 331, and the second blade 34b stretches out 331 shorter length of respective slide slots Degree, both extension elongations are different.When oil-filled in first group of driving chamber 35a, in the first blade 34a and first group of driving chamber 35a The contact area of hydraulic oil is big, and the contact area of hydraulic oil is small in the second blade 34b and first group of driving chamber 35a.Therefore, first Blade 34a is by the A in a first direction of hydraulic oil in first group of driving chamber 35a₁The oil pressure of upper application, more than the second blade 34b institutes The oil pressure applied by hydraulic oil in first group of driving chamber 35a in opposite direction.Therefore, the first blade 34a rotor drivens 33 along first Direction A₁Rotated to second group of driving chamber 35b side (right side), this can reduce eccentric orfice 20 to crank pin end pore 13 away from From (with reference to Fig. 2 (a)).

Reference picture 10 (b) simultaneously combines Fig. 4 (b), arrow f in Fig. 4 (b)₃And f₄For running of hydraulic power oil path, work as commutation control For valve 4 at the second place, valve body oil groove 414 is located at right side.By valve body oil groove 414, reversing control valve 4 connects second group of driving Chamber 35b and engine crankshaft internal oil channel, the hydraulic oil of engine crankshaft internal oil channel is along f₃It is input in second group of driving chamber 35b. Hydraulic oil in left side, first group of driving chamber 35a is along f₄Control valve mounting hole 15 is flowed back to, and through two neighboring card in bonnet 16 Outside gap discharge control valve mounting hole 15 between pin 161.Therefore, reversing control valve 4 connects second group of drive at the second place Dynamic chamber 35b and engine crankshaft internal oil channel, and the hydraulic oil in first group of driving chamber 35a discharges.

In this course, blade 34 by hydraulic pressure and rotor driven 33 and output shaft 30 (reference picture 1) A in a second direction₂ Rotate counterclockwise.

When oil-filled in second group of driving chamber 35b, the first blade 34a contacts with hydraulic oil in second group of driving chamber 35b Area is big, and the contact area of hydraulic oil is small in the second blade 34b and second group of driving chamber 35b.Therefore, the first blade 34a by Hydraulic oil is in second direction A in second group of driving chamber 35b₂The oil pressure of upper application, more than second group of driving suffered by the second blade 34b The oil pressure that hydraulic oil applies in opposite direction in chamber 35b, therefore, the first blade 34a rotor drivens 33 A in a second direction₂To first Group driving chamber 35a side (left side) rotation, this can increase eccentric orfice 20 to the distance of crank pin end pore 13 (with reference to Fig. 2 (b))。

Reference picture 4, when arranging the arrangement position of reversing control valve 4, no matter reversing control valve 4 is in lower position or second Position, first connecting rod oilhole 1a are aligned with valve body oil groove 414 all the time, and the hydraulic oil in engine crankshaft can flow to valve body all the time Oil groove 414.

Reference picture 10, due to blade (first blade at the respective both ends of first group of driving chamber 35a and second group of driving chamber 35b 34a and the second blade 34b) it is different along the length of chute where the depth direction stretching of respective place chute, therefore could be in leaf Two sides of piece form hydraulic pressure difference, and then realize that rotor driven 33 rotates.

Reference picture 10 (a) simultaneously combines Fig. 2 (a), and when being full of hydraulic oil in first group of driving chamber 35a, rotor 33 can be protected Hold in certain position so that eccentric bushing 2 is maintained at position shown in Fig. 2 (a).When piston (not shown) is moved, Eccentric bushing 2 can be impacted, now rotor 33 can by output shaft 30 (reference picture 3) come stop eccentric bushing 2 because be hit and Moved in eccentric bushing mounting hole 12 (reference picture 1), to maintain the positional stability of eccentric bushing 2, engine keeps relatively low compression Than.

With reference to Figure 10 (b) and Fig. 2 (b), when being full of hydraulic oil in second group of driving chamber 35b, eccentric bushing 2 can be with holding position Stability is put, engine maintains high compression ratio.

Reference picture 4, for rotor chamber 320 in connecting rod 1, housing 32 is a part for connecting rod 1.First group of driving chamber 35a tool There is the first openend 351 for being facing axially away from output shaft 30 (with reference to Fig. 3) along rotor 33, and second group of driving chamber 35b has edge The second openend 352 for being facing axially away from output shaft of rotor 33.Connecting rod 1 has：Connect the second connecting rod oil of the first openend 351 The hole 1b and third connecting rod oilhole 1c for connecting the second openend 352.

Reversing control valve 4 connects oil in second connecting rod oilhole 1b and engine crankshaft at first position shown in Fig. 4 (a) Road, and the hydraulic oil in second group of driving chamber 35b discharges through third connecting rod oilhole 1c；Reversing control valve 4 is in Fig. 4 (b) institutes When showing the second place, third connecting rod oilhole 1c and engine crankshaft internal oil channel, and the hydraulic oil in first group of driving chamber 35a are connected Discharged through second connecting rod oilhole 1b.

Reference picture 4 (a) simultaneously combines Figure 10 (a), when reversing control valve 4 is in first position, the valve body of reversing control valve 4 Oil groove 414 is directed at second connecting rod oilhole 1b, and hydraulic oil flows to second connecting rod oilhole 1b, second connecting rod oilhole from valve body oil groove 414 1b delivery hydraulic pressures oil is to first group of driving chamber 35a.Simultaneously as valve body 41 is in left side, third connecting rod oilhole 1c connection controls Valve mounting hole 15, hydraulic oil in second group of driving chamber 35b flow back to control valve mounting hole 15 through third connecting rod oilhole 1c, and to control Discharged outside valve mounting hole 15 processed.

Reference picture 4 (b) simultaneously combines Figure 10 (b), when reversing control valve 4 is in the second place, the valve body of reversing control valve 4 Oil groove 414 is directed at third connecting rod oilhole 1c, and the hydraulic oil in valve body oil groove 414 flows to third connecting rod oilhole 1c output hydraulic pressures oil, Third connecting rod oilhole 1c delivery hydraulic pressures oil is to second group of driving chamber 35b.Simultaneously as valve body 41 is in right side, second connecting rod oil Hole 1b connections control valve mounting hole 15, the hydraulic oil in first group of driving chamber 35a flow back into control valve through second connecting rod oilhole 1b Mounting hole 15, and discharged to outside control valve mounting hole 15.

Reference picture 1, connecting rod 1 include the Part I 10a with small end of connecting rod 10 and second with big end 11 Divide 10b.Part I 10a has internal thread part 101, and internal thread part 101 can be screwed hole.Part II 10b has outer spiral shell Line portion 102, internal thread part 101 and external thread part 102 are that screw thread coordinates to connect Part I 10a and Part II 10b.This can To realize Part I 10a and Part II 10b as split type composition.

With reference to Fig. 4, in this case, rotor chamber 320 is located at Part I 10a, and connects internal thread part 101.Hydraulic pressure Driver 3 is located at Part I 10a.Second connecting rod oilhole 1b and third connecting rod oilhole 1c can be located at Part II 10b, wear Cross external thread part 102.

With reference to Figure 11-Figure 13, second connecting rod oilhole 1b passes through external thread part 102, and in the facing rotors chamber of external thread part 102 End face 1020 form the first oil groove 102a, the first oil groove 102a and lead to all driving chambers in first group of driving chamber 35a；3rd Connecting rod oilhole 1c passes through external thread part 102, and the second oil groove 102b, the second oil are formd in the end face 1020 of external thread part 102 All driving chambers that groove 102b leads in second group of driving chamber 35b.

First oil groove 102a and the second oil groove 102b is spaced from each other without connecting.With reference to Figure 10, the first oil groove 102a is compared There can be large-size in second connecting rod oilhole 1b, all driving chambers in first group of driving chamber 35a can be connected simultaneously, the All driving chambers can be oil-filled in one group of driving chamber 35a.Second oil groove 102b can have compared to third connecting rod oilhole 1c Large-size, all driving chambers in second group of driving chamber 35b can be connected, all driving chambers are equal in second group of driving chamber 35b Can be oil-filled.So, second connecting rod oilhole 1b and third connecting rod oilhole 1c need not design larger aperture, to save material and protect Demonstrate,prove the intensity of connecting rod.

Reference picture 14, rotor 33 is interior to have rotor hole 33a.With reference to Fig. 4 and Figure 10, rotor hole 33a connects all chutes 331, reversing control valve 4 connects engine crankshaft internal oil channel and rotor hole 33a all the time.Specifically, valve body oil groove 414 connects all the time Rotor hole 33a, engine crankshaft internal oil channel are oily to rotor hole 33a delivery hydraulic pressures through valve body oil groove 414.With reference to Figure 10, from rotor The hydraulic oil that hole 33a is flowed into chute 331 drives 34 blades to contact sealing with the inwall 321 of rotor chamber 320.

With reference to 10 (a), due to rotor chamber 320 be circular hole and with the eccentric setting of rotor 33, in the A in the first direction of rotor 33₁ During rotation, depth direction Es of the first blade 34a along place chute 331 is gradually in retraction chute 331, the first blade 34a Hydraulic oil in place chute 331 gradually outwards flows back to rotor hole 33a.Meanwhile second depths of the blade 34b along place chute 331 Degree direction E is gradually overhang to chute 331, where the hydraulic oil in rotor hole 33a flows into the second blade 34b in chute 331.The When hydraulic oil where one blade 34a in chute 331 flows back into rotor hole 33a, the hydraulic oil in rotor hole 33a also flows into second Where blade 34b in chute 331.Other blades 34 can analogize accordingly.Therefore, the oil pressure in all chutes 331 can be kept It is constant, to maintain each blade 34 to contact sealing with the inwall 321 of rotor chamber 320 all the time.

Reference picture 14, rotor shaft direction of the chute 331 along rotor 33 is divided into the first pilot trench 3311 and the second pilot trench (does not show in figure Go out).For first pilot trench 3311 between the second pilot trench and rotor hole 33a, the first pilot trench 3311 is deeper than second pilot trench, and first The bottom surface of pilot trench 3311 forms step between the second pilot trench bottom surface.In blade 34 (with reference to Figure 10) insertion chute 331, Ke Yihe The bottom surface contact of second pilot trench, but there is gap between the bottom surface of meeting and the first pilot trench 3311.Hydraulic oil in rotor hole 33a It can be full of all the time in the gap between the bottom surface of the pilot trench 3311 of blade 34 and first, to maintain all blades 34 and rotor chamber 320 inwall 321 (with reference to Figure 10) contact sealing.

With reference to Figure 11-Figure 13, fourth link oilhole 1d, fourth link oilhole 1d are provided with the Part II 10b of connecting rod 1 Through external thread part 102.With reference to Fig. 4, the valve body oil groove of fourth link oilhole 1d connection rotor hole 33a and reversing control valve 4 414, with the delivery hydraulic pressure oil between valve body oil groove 414 and rotor hole 33a.No matter reversing control valve 4 is in first position or Two positions, fourth link oilhole 1d can lead to valve body oil groove 414 all the time, with the fuel feeding into rotor hole 33a, maintain the He of blade 34 The inwall 321 of rotor chamber 320 contacts sealing (with reference to Figure 10) all the time.

Blade 34 is maintained to contact sealing (with reference to Figure 10) with the inwall 321 of rotor chamber 320 using hydraulic oil, it is possible to reduce zero Number of components, reduce cost.Moreover, this makes full use of engine lubrication system, it is easy to accomplish.

Apart from the above arrangements, as improvement project, elastic component can be provided with chute, elastic component applies bullet to blade Power, blade are contacted sealing by elastic force with the inwall of rotor chamber.

Reference picture 15 and Figure 16, small end of connecting rod 10 are provided with first microcephaly's oilhole 10c and second microcephaly's oilhole 10d.First is small Hair oil hole 10c and second microcephaly's oilhole 10d connect rotor chamber 320 and eccentric bushing mounting hole 12.

With reference to Fig. 4, after the assembling of hydraulic unit driver 3, first microcephaly's oilhole 10c connects first group of driving chamber 35a and bias Mounting hole 12 is covered, second microcephaly's oilhole 10d connects second group of driving chamber 35b and eccentric bushing mounting hole 12.Therefore, in commutation control When valve 4 is in first position, hydraulic oil can be flowed into eccentric bushing mounting hole 12 through first microcephaly's oilhole 10c, and eccentric bushing is pacified Contact surface between dress hole 12 and eccentric bushing 2 is lubricated.When reversing control valve 4 is in the second place, hydraulic oil can be through Second microcephaly's oilhole 10d is flowed into eccentric bushing mounting hole 12, and the contact surface between eccentric bushing mounting hole 12 and eccentric bushing 2 is carried out Lubrication.Therefore, it is expected that eccentric bushing mounting hole 12, which can obtain lubrication all the time,.

Reference picture 17, the periphery 23 of eccentric bushing 2 are provided with the first eccentric bushing oilhole 2a and the second eccentric bushing oilhole 2b, and first Eccentric bushing oilhole 2a and the second eccentric bushing oilhole 2b connection eccentric orfices 20.First eccentric bushing oilhole 2a and the second eccentric bushing oilhole 2b Outer along eccentric bushing 2 is circumferentially arranged, cylindrical 22 near-end Cs of the first eccentric bushing oilhole 2a close to eccentric bushing 2₂, and second is eccentric Oilhole 2b is covered close to cylindrical 22 distal end C₁。

With reference to Figure 18 (a) and Fig. 4 (a), when reversing control valve 4 is in first position, cylindrical 22 distal end of eccentric bushing 2 C₁It is above, near-end C₂Positioned at lower section.First eccentric bushing oilhole 2a in lower section to be connected with first microcephaly's oilhole 10c, and second Eccentric bushing oilhole 2b with second microcephaly's oilhole 10d up not connect.Hydraulic oil in first group of driving chamber 35a is successively from One microcephaly's oilhole 10c and the first eccentric bushing oilhole 2a flows into eccentric orfice 20, to connecting the bearing pin of piston and the boundary of eccentric orfice 20 Face is lubricated.

With reference to Figure 18 (b) and Fig. 4 (b), when reversing control valve 4 is in the second place, cylindrical 22 near-end of eccentric bushing 2 C₂It is above, distal end C₁Positioned at lower section.Second eccentric bushing oilhole 2b in lower section to be connected with second microcephaly's oilhole 10d, and first Eccentric bushing oilhole 2a with first microcephaly's oilhole 10c up not connect.Hydraulic oil in second group of driving chamber 35b is successively from Two microcephaly's oilhole 10d and the second eccentric bushing oilhole 2b flow into eccentric orfice 20, to connecting the bearing pin of piston and the boundary of eccentric orfice 20 Face is lubricated.

Reference picture 18 simultaneously combines Figure 15, and first microcephaly's oilhole 10c and second microcephaly's oilhole 10d are along eccentric bushing mounting hole 12 Axial arranging.Therefore, the first eccentric bushing oilhole 2a and the second eccentric bushing oilhole 2b are circumferentially arranged in the outer of eccentric bushing 2, and along inclined The axile displacement arrangement of heart set 2, with the diverse location of eccentric bushing 2, respectively with first microcephaly's oilhole 10c and second microcephaly's oilhole 10d is connected.

Reference picture 19, the periphery 23 of eccentric bushing 2 are provided with eccentric bushing oil groove 2c, eccentric bushing oil groove 2c along the outer of eccentric bushing 2 Circumferentially extending.With reference to Figure 17, the first eccentric bushing oilhole 2a can connect eccentric bushing oil groove 2c bottoms.

With reference to Figure 18 (a), the first eccentric bushing oilhole 2a connection eccentric bushing oil grooves 2c bottom.The outer peripheral face of small end of connecting rod 10 It is communicated with microcephaly's outage 10e of eccentric bushing mounting hole 12.

Reference picture 18 (a) simultaneously combines Fig. 2 (a), and when engine is in full load operation, reversing control valve 4 is in first Position (with reference to Fig. 4 (a)), first microcephaly's oilhole 10c connect with eccentric bushing oil groove 2c, eccentric bushing oil groove 2c and microcephaly's outage 10e is connected.On the one hand the hydraulic oil of first microcephaly 10c outputs can flow into the first eccentric bushing oilhole 2a and eccentric orfice 20, another Aspect can be flowed out outside small end of connecting rod 10 through microcephaly's outage 10e.

In use, small end of connecting rod 10 is used for being contained in piston.When full engine load is run, piston is small with connecting rod First 10 occur frequently friction and produce high temperature.Now, engine has small reduction ratio, pacifies through microcephaly's outage 10e to eccentric bushing The hydraulic oil discharged outside dress hole 12 has certain cooling effect, can play the work that cools to cooling piston and small end of connecting rod 10 With.

On the other hand, eccentric bushing oil groove 2c has oil-collecting effect, and hydraulic oil is assembled in eccentric bushing oil groove 2c, can be long-term And the contact surface between sufficient lubrication eccentric bushing 2 and eccentric bushing mounting hole 12.

Reference picture 1 and Fig. 3, the drive connection between the output shaft 30 of hydraulic unit driver 3 and the periphery 23 of eccentric bushing 2 are Worm Wheel System：Output shaft 30 has worm tooth 31；With reference to Figure 19, some worm-gear toothings are provided with the periphery 23 of eccentric bushing 2 24, worm-gear toothing 24 is circumferentially arranged along the outer of eccentric bushing 2；Worm tooth 31 can engage with worm-gear toothing 24.Output shaft 30 is in itself Axis rotate A when, be engaged transmission by worm tooth 31 and worm-gear toothing 24, further drive eccentric bushing 2 outside itself The axis of circle 22 rotates B.Cylindrical 22 axis and the output shaft 30 of eccentric bushing 2 are vertically arranged.

Worm Wheel System is easily achieved, and can accurately control eccentric bushing 2 to rotate B corner.Due to engine Compression ratio is changed in limited range, thus eccentric bushing 2 rotate B when corner can be limited to a limited range It is interior.Therefore, worm tooth 31 can be a part for cylindrical 22 girth of eccentric bushing 2 along length circumferentially distributed outside eccentric bushing 2. So worm tooth 31 can be selected to realize the anglec of rotation to be reached of eccentric bushing 2 along length circumferentially distributed outside eccentric bushing 2.

Reference picture 15 and Figure 16 simultaneously combine Figure 18, and outer peripheral face of the small end of connecting rod 10 around the axis of eccentric bushing mounting hole 12 is set There is connecting rod small end hole 10f.Connecting rod small end hole 10f connections eccentric bushing mounting hole 12 simultaneously exposes the snail on the periphery 23 of eccentric bushing 2 The gear teeth 24, to cause the periphery 23 of the output shaft 30 (with reference to Fig. 3) of hydraulic unit driver 3 and eccentric bushing 2 for Worm Wheel System. Wherein, connecting rod small end hole 10f exposes worm-gear toothing 24, and output shaft 30 (with reference to Fig. 3) can be in connecting rod small end hole 10f and worm-gear toothing 24 form Worm Wheel System.

Reference picture 9 simultaneously combines Figure 18, and the housing 32 of hydraulic unit driver 3 (with reference to Fig. 1) is provided with output shaft receiving portion 322, defeated Shaft receiving portion 322 is respectively communicated with rotor chamber 320 and connecting rod small end hole 10f.In assembling, output shaft 30 (reference picture 3) can be with Reach in output shaft receiving portion 322 from rotor chamber 320, and engaged with worm-gear toothing 24.

Reference picture 3, output shaft 30 and rotor 33 are coaxial.With reference to Figure 10, rotor chamber 320 and the eccentric setting of rotor 33.Therefore, Reference picture 18, rotor chamber 320 and output shaft 30 (with reference to Fig. 3) eccentric setting, rotor chamber 320 can be with output shaft receiving portion 322 Eccentric setting.

Reference picture 15 and Figure 16, connecting rod small end hole 10f pacify with first microcephaly's oilhole 10c and the second microcephaly 10d along eccentric bushing The axial arranging in hole 12 is filled, can mutually be staggered.This with rotor 33 in the arrangement position of rotor chamber 320 and hydraulic unit driver 3 and Arrangement side of the blade 34 (reference picture 10) in rotor chamber 320 is relevant.Therefore, it is contemplated that the phase between all parts and structure Mutual matching relationship, to design the layout of all parts and structure.

Second embodiment

Compared with first embodiment, the difference of second embodiment is：

Reference picture 20 and Figure 21, the Part I 10a ' of connecting rod 1 ' is provided with external thread part 103 and Part II 10b ' is provided with Internal thread part 104.Rotor chamber 50 (with reference to Figure 22) is located at Part II 10b ', axially connects, is assembling with internal thread part 104 Afterwards, external thread part 103 can be with canned rotor chamber 50, to avoid the hydraulic oil in rotor chamber 50 from being flowed out from internal thread part 104.Outer spiral shell Line portion 103 is provided with output shaft receiving hole 105, and the output shaft 30 ' (with reference to Figure 23) of hydraulic unit driver (not shown) can be worn It is Worm Wheel System to cross between the periphery of output shaft receiving hole 105 and eccentric bushing (not shown).

Reference picture 22, another difference is that：Rotor chamber 50 is waist-shaped hole, has a pair of straight lines set face-to-face Type hole wall and the arc hole wall set face-to-face for a pair.First group of driving chamber 50a includes two pairs of driving chambers 52 and 53, second group of drive Dynamic chamber 50b includes a pair of driving chambers 54.

On the one hand, because rotor chamber 50 is waist-shaped hole, two driving chambers in each pair driving chamber can turn on rotor 5 Axle rotational symmetry, the anglec of rotation of rotational symmetry is 180 °.By taking a pair of driving chambers 52 in first group of driving chamber 50a as an example, wherein One driving chamber 52 rotates 180 ° around the rotating shaft of rotor 5, can be overlapped with another driving chamber 52.Other two pairs of Hes of driving chamber 53 54 can analogize accordingly.

Blades of the first group of driving chamber 50a and second group of driving chamber 50b along the direction of rotation both ends of rotor 5 is identical blade, For a pair of first blade 51a and a pair of second blade 51b, two groups of driving chambers 50a and 50b are separated.Wherein, a pair of first blades 51a on rotor 5 radial direction back to and the length that sets and stretch out outside rotor 5 is identical, a pair of second blade 51b are on rotor 5 Radially back to and the length that sets and stretch out outside rotor 5 is identical.But rotor chamber 50 is waist-shaped hole, this can cause in rotor 5 Blade, the length stretched out such as the first blade 51a and the second blade 51b along the depth direction of chute 57 outside rotor 5 are not quite similar, so that Hydraulic oil pressure is different in respective sets driving chamber suffered by first blade 51a and the second blade 51b, and then being capable of 5 turns of rotor driven It is dynamic.

As shown in figure 22, it is full of hydraulic oil (darker regions in Figure 22) in first group of driving chamber 50a, and second group of drive The outside oil extractions of dynamic chamber 50b.First blade 51a stretches out the length outside rotor 5 and is more than the length that the second blade 51b is stretched out outside rotor 5, First blade 51a is larger by hydraulic oil hydraulic pressure in first group of driving chamber 50a, the A in the first direction of rotor driven 5₁Turn clockwise. In another case, if being filled with hydraulic oil into second group of driving chamber, and during oil extraction outside from first group of driving chamber, rotor Can be with rotate counterclockwise.

The interior second connecting rod oilhole 1b ' that is provided with of connecting rod 1 ' can connect first group simultaneously to connect first group of driving chamber 50a Positioned at the driving chamber 52 and 53 that the radial direction side of rotor 5 is adjacent in driving chamber 50a.Connecting rod 1 ' is interior to be provided with third connecting rod oilhole 1c ' is with a driving chamber 54 in second group of driving chamber 50b of connection.

Pass through first with reference to Figure 23, in a pair of driving chambers 52 in first group of driving chamber 50a, between two driving chambers 52 to connect Hole 520 is connect to connect；In another pair driving chamber 53, connected between two driving chambers 53 by the second connecting hole 530.Second group of driving In a pair of driving chambers 54 in chamber 50b, connected between two driving chambers 54 by the 3rd connecting hole 540.First connecting hole 520, Second connecting hole 530 and the 3rd connecting hole 540 are multiple, along the arrangement straggly of the axial direction of rotor 50, the first connecting hole 520th, the second connecting hole 530 and the 3rd connecting hole 540 will not be interconnected.

The included radial directions in rotor 5 of first group of driving chamber 50a and second group of driving chamber 50b back to and the driving chamber that sets Logarithm provide only a kind of example.Turn as an improvement, first group of driving chamber 50a and second group of driving chamber 50b can be included in The radial direction of son 5 back to and at least one pair of driving chamber for setting.

Another difference is that rotor 5 includes matrix 55 and radially outward some of radiation profiles dash forward from matrix 55 Portion 56 is played, is opened in radial direction of the jut 56 along rotor back in the lateral wall of matrix 55 for the chute 57 of blade insertion, projection The lateral wall in portion 56 can be considered as the lateral wall of rotor 5.

3rd embodiment

With comparing in first embodiment and second embodiment, the difference of 3rd embodiment is：

Reference picture 24 and Figure 25, connecting rod 6 are formed for integral type, are provided with connecting rod chamber 60 in connecting rod 6, hydraulic unit driver is (in figure It is not shown) it can be located in connecting rod chamber 60, the connecting rod chamber 60 can be used as rotor chamber.Connecting rod chamber 60, which has, is located at major part inner headed face 61 assembling entrance 62, major part cap 63 is provided with assembling entrance 62, major part cap 63 drives to each group in hydraulic unit driver Chamber plays isolation and sealing function.

Major part cap 63, which has, to be used in face of the end face 630 of engine crankshaft, and end face 630 is arc surface, can be with major part Inner headed face 61 has same radius, and both can flush setting.

With reference to Figure 26 and Figure 27, control valve mounting hole is located in major part cap 63 and connecting rod 6.The is provided with major part cap 63 One mounting hole 64, the second mounting hole 65 is correspondingly provided with connecting rod 6.When major part cap 63 loads in assembling entrance 62, first The mounting hole 65 of mounting hole 64 and second is aligned to form control valve mounting hole.So, reversing control valve (not shown) can be with It is contained in major part cap 63 and connecting rod 6.

In assembling, first hydraulic unit driver is loaded in connecting rod chamber 60, connecting rod chamber 60 can be used as rotor chamber；Afterwards, will Major part cap 63 loads in assembling entrance 62, and major part cap 63 closes connecting rod chamber 60；Finally, reversing control valve is loaded and controlled Valve mounting hole, and cover and set bonnet (not shown).The corresponding scheme of first embodiment is may be referred on bonnet, it is no longer superfluous State.

In addition, first connecting rod oilhole 66, second connecting rod oilhole 67, third connecting rod oilhole 68 and fourth link oilhole 69 are located at Major part cap 63, four connecting rod oilholes connect the first mounting hole 64.In use, first connecting rod oilhole 66 connects engine song Axle internal oil channel, for hydraulic oil is inputted into reversing control valve.Second connecting rod oilhole 67 and third connecting rod oilhole 68 can connect respectively The first group of driving chamber and second group of driving chamber (not shown) of logical hydraulic unit driver, selectively exported to two groups of driving chambers Hydraulic oil.Fourth link oilhole 69 is connected in hydraulic unit driver in the chute of rotor, for keeping in blade and rotor chamber Wall contact sealing.

This major part cap is also applied for the scheme of first embodiment and second embodiment.

Fourth embodiment

Compared with previous embodiment, the difference of fourth embodiment is：

Reference picture 28, housing 7 can be fixedly connected with the outer surface of connecting rod 8

Reference picture 29, housing 7 have the outer peripheral face 72 of surrounding rotor 71.The outer peripheral face 72 of housing 7 is provided with the first housing oil Hole 72a and the second housing oilhole 72b, the first housing oilhole 72a connects first group of driving chamber 70a and the second housing oilhole 72b connects Lead to second group of driving chamber 70b.Reversing control valve 9 connects oil in the first housing oilhole 72a and engine crankshaft at first position Road, and the hydraulic oil in second group of driving chamber 70b discharges through the second housing oilhole 72b；Reversing control valve 9 is in the second place When, the second housing oilhole 72b and engine crankshaft internal oil channel are connected, and the hydraulic oil in first group of driving chamber 70a is through first shell Body oilhole 72a is discharged.

Another difference is that rotor chamber 70 is elliptical aperture, first group of driving chamber 70a and second group of driving chamber 70b Be included in the radial direction of rotor 71 back to and at least one pair of driving chamber for setting.

Reference picture 29 (a), arrow D₁And D₂For running of hydraulic power oil path, when reversing control valve 9 is in first position, according to D₁It is oil-filled into first group of driving chamber 70a, and second group of driving chamber 70b is according to D₂Outside oil extraction, the A in the first direction of rotor 71₁It is suitable Hour hands rotate.

Because rotor chamber 70 is elliptical aperture, first group of driving chamber 70a A in the first direction₁Both ends a pair of first blades The length that 73a and the second blade of another pair 73b is stretched out outside rotor 71 is different.First blade 73a stretch out rotor 71 outside length compared with Long therefore relatively large by hydraulic oil pressure in first group of driving chamber 70a, the first blade 73a rotor drivens 71 are in the first direction A₁Rotate.

Reference picture 29 (b), arrow D₃And D₄For running of hydraulic power oil path, when reversing control valve 9 is in the second place, press According to D₃It is oil-filled into second group of driving chamber 70b, and first group of driving chamber 70a is according to D₄Outside oil extraction, the A in a second direction of rotor 71₂ Rotate counterclockwise.

Because rotor chamber 70 is elliptical aperture, second group of driving chamber 70b A in a second direction₂Both ends a pair of second blades The length that 73b and another pair third blade 73c is stretched out outside rotor 71 is different.Third blade 73c stretch out rotor 71 outside length compared with It is long, therefore third blade 73c is relatively large by hydraulic oil pressure in second group of driving chamber 70b, third blade 73c rotor drivens 71 A in a second direction₂Rotate.

Rotor chamber 70 also includes the 3rd group of driving chamber 70c.So, reference picture 29 (a), even if rotor 71 is clockwise to Second group of driving chamber 70b is aligned with the first housing oilhole 72a, and the 3rd driving chamber 70c is aligned with the second housing oilhole 72b, the One housing oilhole 72a can be oil-filled to second group of driving chamber 70b, and the hydraulic oil in the 3rd driving chamber 70c is from the second housing oilhole 8b is discharged, and rotor 71 can also continue to A in the first direction₁Rotate clockwise.

Reference picture 29 (b), even if rotor 71 is rotated counterclockwise to the 3rd group of driving chamber 70c and the first 72a pairs of housing oilhole Standard, and first group of driving chamber 70a is aligned with the second housing oilhole 72b, the second housing oilhole 72b can be to first group of driving chamber 70a is oil-filled, and the hydraulic oil in the 3rd group of driving chamber 70c can discharge from the first housing oilhole 72a, and rotor 71 can also be after Continuous A in a second direction₂Rotate counterclockwise.

Connecting rod 8 is provided with control valve mounting hole 90, and one end of control valve mounting hole 90 is closed and the other end has opening to fill Enter bonnet 91.Two connecting rod outages 9a and 9b are respectively equipped with the axial both ends of control valve mounting hole 90.In reversing control valve 9 During first position, the connecting rod outage 9a in left side is closed by the valve body 92 of reversing control valve 9, from second shown in Figure 29 (a) Connecting rod outage 9b of the hydraulic oil through right side of housing oilhole 72b outflows discharges to outside control valve mounting hole 90.Work as commutation control Valve 9 is in shown in Figure 29 (b) during the second place, and the connecting rod outage 9b on right side is closed by valve body 92, from the first housing oilhole 72a The hydraulic oil of outflow is discharged from the connecting rod outage 9a in left side to outside control valve mounting hole 90.

First group of driving chamber 70a, second group of driving chamber 70b and the 3rd group of driving chamber 70c include the radial direction along rotor 71 Back to and a pair of driving chambers setting.Reference picture 30, two driving chambers in each pair driving chamber can be connected by connecting hole 74, institute There is connecting hole 74 along the mutual stagger setting in the axial direction of rotor 71.With reference to the dotted arrow on rotor 71 in reference picture 29, the dotted line arrow Head represents flow path of the hydraulic oil in corresponding intercommunicating pore 74.

Reference picture 28, rotor chamber 70 have assembling entrance 700, are provided with rotor cover 75 in assembling entrance 700, rotor cover 75 can With located at assembling entrance 700 in, with enclosed rotor chamber 70.With reference to Figure 29, when rotor cover 75 is in assembling entrance 700, turn Sub- lid 75 can be axially in contact with sealing, to prevent first group of driving chamber 70a, second group of driving chamber 70b and the 3rd with rotor 71 Connected between group driving chamber 70c.

Wherein, rotor cover 75 can be linked together with housing 7 by pin 76, and pin 76 can be along the footpath of rotor chamber 70 To through rotor cover 75 and housing 7, rotor cover 75 is fixed on housing 7.

With reference to Figure 31, the lateral surface of rotor cover 75 is engaged with the inwall of rotor chamber 70, and the lateral surface 753 of rotor cover 75 is Ellipse.Rotor cover 75 is provided with rotor cover oilhole 750, and rotor cover oilhole 750 has oilhole entrance 751 and oilhole outlet 752.Oil Hole entrance 751 is located at the lateral surface 753 of rotor cover 75, for leading to the valve body oil groove 93 (reference picture 29) of reversing control valve 9.Oil Hole exits 752 are located at rotor cover 75 and the axially opposing end face 754 of rotor 71, for connecting all chutes 77 (reference picture 29). So, reversing control valve 9 connects rotor cover oilhole 750 and all chutes 77, engine crankshaft internal oil channel are defeated to chute 77 all the time Liquor charging presses oil, and the hydraulic oil flowed into chute 77 drives respective vanes to contact sealing with the inwall of rotor chamber 70.

Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art, this is not being departed from In the spirit and scope of invention, it can make various changes or modifications, therefore protection scope of the present invention should be with claim institute The scope of restriction is defined.

Claims

A kind of 1. link assembly, it is characterised in that including：Connecting rod, the connecting rod have small end of connecting rod and big end, the company Bar major part has crank pin end pore；

Eccentric bushing with eccentric orfice, the small end of connecting rod have the eccentric bushing mounting hole for accommodating eccentric bushing；

Hydraulic unit driver with output shaft, located at the connecting rod, the output shaft is drive connection with the eccentric bushing, in liquid Under pressure effect, the output shaft can rotate around own central axis line and drive the eccentric bushing by the drive connection Rotated around itself cylindrical axis, to change the eccentric orfice to the distance of the crank pin end pore.
2. link assembly as claimed in claim 1, it is characterised in that also include：Reversing control valve, located at the connecting rod, use In connection engine crankshaft internal oil channel with oily to the hydraulic unit driver output hydraulic pressure, the reversing control valve has first position And the second place；

When the hydraulic oil of engine crankshaft internal oil channel output is higher than predetermined value, the reversing control valve is in described first Put, the output shaft of the hydraulic unit driver is rotated in a first direction, with reduce the eccentric orfice to the crank pin end pore away from From；

When the hydraulic oil of engine crankshaft internal oil channel output is less than the predetermined value, the reversing control valve is in described second Position, the output shaft of the hydraulic unit driver rotate in a second direction, to increase the eccentric orfice to the crank pin end pore Distance, the first direction and second direction are two opposite directions.
3. link assembly as claimed in claim 2, it is characterised in that the hydraulic unit driver includes：

Housing with rotor chamber；

Rotor, in the rotor chamber and coaxially connected with the output shaft, the lateral wall of the rotor is provided with some chutes, All chutes are arranged around rotor shaft；

Some blades, corresponding to insertion in the chute, it can be moved to along the depth direction of the chute and the rotor chamber Inwall contact seal and the rotor chamber is separated at least be divided into first group of adjacent drive for multiple driving chambers, all driving chambers Dynamic chamber and second group of driving chamber；

In said first direction, first group of driving chamber and second group of driving chamber each both ends blade can contact institute When stating rotor cavity wall, the length of chute is different where being stretched out along the depth direction of place chute；

The reversing control valve connects first group of driving chamber and engine crankshaft internal oil channel and institute at the first position The hydraulic oil stated in second group of driving chamber is discharged, and the blade is driven the rotor to be revolved along the first direction by hydraulic pressure Turn；

The reversing control valve connects second group of driving chamber and engine crankshaft internal oil channel and institute at the second place The hydraulic oil stated in first group of driving chamber is discharged, and the blade is driven the rotor to be revolved along the second direction by hydraulic pressure Turn.
4. link assembly as claimed in claim 3, it is characterised in that the rotor chamber is circular hole, the rotor and the circle Hole is set for the eccentric.
5. link assembly as claimed in claim 3, it is characterised in that the rotor chamber is elliptical aperture or waist-shaped hole；

First group of driving chamber and second group of driving chamber be included in the radial direction of the rotor back to and set at least one To driving chamber.
6. link assembly as claimed in claim 5, it is characterised in that in first group of driving chamber and second group of driving In chamber, to each pair driving chamber in every group of driving chamber, the rotor is provided with connecting hole to connect this pair of driving chambers.
7. link assembly as claimed in claim 3, it is characterised in that the outer surface of the housing and the connecting rod, which is fixed, to be connected Connect.
8. link assembly as claimed in claim 7, it is characterised in that the outer peripheral face of the housing be provided with the first housing oilhole and Second housing oilhole, the first housing oilhole connect first group of driving chamber and the second housing oilhole connection described the Two groups of driving chambers；

The reversing control valve connects the first housing oilhole and engine crankshaft internal oil channel at the first position, and Hydraulic oil in second group of driving chamber discharges through the second housing oilhole；

The reversing control valve connects the second housing oilhole and engine crankshaft internal oil channel at the second place, and Hydraulic oil in first group of driving chamber discharges through the first housing oilhole.
9. link assembly as claimed in claim 7, it is characterised in that the rotor chamber has assembling entrance, in the assembling Entrance is provided with rotor cover；

The rotor cover is provided with rotor cover oilhole, and the reversing control valve connects the rotor cover oilhole and all chutes.
10. link assembly as claimed in claim 3, it is characterised in that the housing be the connecting rod a part, described turn Sub- chamber is in the connecting rod.
11. link assembly as claimed in claim 10, it is characterised in that first group of driving chamber has along the rotor The first openend of the output shaft is facing axially away from, and second group of driving chamber is with described along being facing axially away from for the rotor Second openend of output shaft；

The connecting rod has：The second connecting rod oilhole for connecting first openend and the 3rd company for connecting second openend Bar oilhole；

The reversing control valve connects the second connecting rod oilhole and engine crankshaft internal oil channel at the first position, and Hydraulic oil in second group of driving chamber discharges through the third connecting rod oilhole；

The reversing control valve connects the third connecting rod oilhole and engine crankshaft internal oil channel at the second place, and Hydraulic oil in first group of driving chamber discharges through the second connecting rod oilhole.
12. link assembly as claimed in claim 11, it is characterised in that the connecting rod includes the with the small end of connecting rod A part and the Part II with the big end, the Part I and Part II are split type composition；

The second connecting rod oilhole and the third connecting rod oilhole are located at the Part II.
13. link assembly as claimed in claim 12, it is characterised in that its in the Part I and the Part II One of be provided with internal thread part and another part and be provided with external thread part, the internal thread part and the external thread part as screw thread cooperation To connect the Part I and Part II.
14. link assembly as claimed in claim 13, it is characterised in that the Part I is provided with the internal thread part and institute State Part II and be provided with the external thread part；

The rotor chamber is located at the Part I, and connects the internal thread part；

The second connecting rod oilhole and the third connecting rod oilhole pass through the external thread part.
15. link assembly as claimed in claim 14, it is characterised in that the second connecting rod oilhole is in the external thread part face The first oil groove is formd towards the end face of the rotor chamber, first oil groove leads to all drivings in first group of driving chamber Chamber；And

The third connecting rod oilhole forms the second oil groove in the end face, and second oil groove leads to second group of driving chamber In all driving chambers.
16. link assembly as claimed in claim 13, it is characterised in that the Part I is provided with external thread part and described the Two parts are provided with internal thread part；

The rotor chamber is located at the Part II, and is connected with the internal thread part；

The external thread part is provided with output shaft receiving hole, and the output shaft passes through the output shaft receiving hole and the eccentric bushing It is Worm Wheel System between periphery.
17. link assembly as claimed in claim 11, it is characterised in that the connecting rod is provided with control valve mounting hole, described to change It is contained in control valve in the control valve mounting hole and coaxial with the control valve mounting hole；

The axial arranging of the second connecting rod oilhole and the third connecting rod oilhole along the control valve mounting hole, and extend through Through the hole wall of the mounting hole.
18. link assembly as claimed in claim 17, it is characterised in that there are the control valve mounting hole axial both ends to open Mouthful, it is respectively equipped with bonnet in two openings；

The bonnet includes the multiple card bases for being covered on the cap of the opening and being connected with the cap, the card base card In the hole wall of the control valve mounting hole, hydraulic oil is installed from the gap discharge control valve between the two neighboring card base Outside hole.
19. link assembly as claimed in claim 17, it is characterised in that hole wall of the control valve mounting hole at axial both ends In be respectively equipped with connecting rod outage, the hydraulic oil of the second connecting rod oilhole and third connecting rod oilhole discharge is respectively through corresponding Connecting rod outage discharged to outside reversal valve mounting hole.
20. link assembly as claimed in claim 3, it is characterised in that there is rotor hole, the rotor hole connects in the rotor Lead to all chutes, the reversing control valve connects engine crankshaft internal oil channel and the rotor hole all the time.
21. link assembly as claimed in claim 20, it is characterised in that rotor shaft direction of the chute along the rotor is divided into First pilot trench and the second pilot trench, first pilot trench is between second pilot trench and the rotor hole, first pilot trench It is deeper than second pilot trench.
22. link assembly as claimed in claim 3, it is characterised in that elastic component, the elastic component are provided with the chute Elastic force is applied to the blade, the blade is contacted sealing by elastic force with the inwall of the rotor chamber.
23. link assembly as claimed in claim 3, it is characterised in that the small end of connecting rod is provided with first microcephaly's oilhole and the Two microcephaly's oilholes；

The first microcephaly oilhole connects first group of driving chamber and the eccentric bushing mounting hole；

The second microcephaly oilhole connects second group of driving chamber and the eccentric bushing mounting hole.
24. link assembly as claimed in claim 23, it is characterised in that the periphery of the eccentric bushing is provided with the first eccentric bushing Oilhole and the second eccentric bushing oilhole, the first eccentric bushing oilhole and the second eccentric bushing oilhole connect the eccentric orfice；

When the reversing control valve is in the first position, the first eccentric bushing oilhole connects with the first microcephaly oilhole It is logical, and the second eccentric bushing oilhole does not connect with the second microcephaly oilhole；

When the reversing control valve is in the second place, the second eccentric bushing oilhole connects with the second microcephaly oilhole It is logical, and the first eccentric bushing oilhole does not connect with the first microcephaly oilhole.
25. link assembly as claimed in claim 24, it is characterised in that the periphery of the eccentric bushing is provided with eccentric bushing oil Groove, outer circumferentially extending of the eccentric bushing oil groove along the eccentric bushing, the first eccentric bushing oilhole connect the eccentric bushing oil The bottom of groove；

The outer peripheral face of the small end of connecting rod is communicated with microcephaly's outage of the eccentric bushing mounting hole；

When the reversing control valve is in the first position, the eccentric bushing oil groove connects the first microcephaly oilhole and institute State microcephaly's outage.
26. link assembly as claimed in claim 2, it is characterised in that the connecting rod is formed for integral type, is set in the connecting rod There is connecting rod chamber, the hydraulic unit driver is located in the connecting rod chamber；

The connecting rod chamber has the assembling entrance positioned at major part inner headed face, it is described be fitted into it is intraoral be provided with major part cap, it is described Reversing control valve is in the major part cap and the connecting rod.
27. link assembly as claimed in claim 1, it is characterised in that the drive connection is：

The output shaft has worm tooth；

Some worm-gear toothings are provided with the periphery of the eccentric bushing, the worm-gear toothing is circumferentially arranged along the outer of the eccentric bushing；

The worm tooth engages with the worm-gear toothing.
28. link assembly as claimed in claim 1, it is characterised in that the outer peripheral face of the small end of connecting rod is provided with small head bore, institute State small head bore to connect the eccentric bushing mounting hole and expose the periphery of the eccentric bushing, to cause the institute of the hydraulic unit driver The periphery for stating output shaft and the eccentric bushing is Worm Wheel System.
29. link assembly as claimed in claim 1, it is characterised in that the big end has major part inner headed face, described Major part inner headed face is provided with bearing shell, and the big end coats engine crankshaft by the bearing shell；The bearing shell has bearing shell Inner headed face, the bearing shell inner headed face are provided with bearing oil-groove, and the bearing oil-groove extends around engine crankshaft and is suitable to connection hair Motivation bent axle internal oil channel.
30. link assembly as claimed in claim 29, it is characterised in that the connecting rod is provided with first connecting rod oilhole, and described One connecting rod oilhole connects the bearing oil-groove and leads to the hydraulic unit driver.
31. link assembly as claimed in claim 30, it is characterised in that the bearing shell has bearing shell periphery, in the axle In watt periphery and the major part inner headed face, one of disc is provided with boss and another disc is provided with locating slot, described convex Decometer is in the locating slot.
32. link assembly as claimed in claim 2, it is characterised in that the reversing control valve includes：

Valve body, there is axially spaced elastic component chamber and valve-rod cavity and separate the cut-off of the elastic component chamber and the valve-rod cavity Portion, the outer peripheral face of the valve body are provided around the annular valve body oil groove of the spindle of valve body line, and the valve body oil groove is used for all the time Engine crankshaft internal oil channel is connected, the valve body has the valve body oilhole for connecting the valve body oil groove and the valve-rod cavity；

Elastic component, it is limited to the elastic component intracavitary；

Valve rod, it is limited in the valve-rod cavity；

When the hydraulic oil of engine crankshaft internal oil channel input is higher than predetermined value, hydraulic oil in the valve body oil groove is from the valve Body oilhole flows into the valve-rod cavity, drives the valve body towards the lateral movement of elastic component one, the elastic component extrusion, The reversing control valve is in the first position；

When the hydraulic oil of engine crankshaft internal oil channel input is less than predetermined value, the elastic component drives the valve body described in The lateral movement of valve rod one, the hydraulic oil in the valve-rod cavity is discharged in the valve body oil groove from the valve body oil oilhole, described to change The second place is in control valve.
33. link assembly as claimed in claim 32, it is characterised in that the connecting rod is provided with control valve mounting hole, described to change It is contained in control valve in the control valve mounting hole；

The control valve mounting hole has axial both ends open, and bonnet is provided with the opening；

The both ends of the elastic component are each defined in the elastic component chamber and the corresponding bonnet；

The valve rod is fixed on another corresponding bonnet.
34. a kind of toggle, it is characterised in that including the link assembly described in claim any one of 1-33.
35. a kind of engine, it is characterised in that including the toggle described in claim 34.
36. a kind of automobile, it is characterised in that including the engine described in claim 35.