CN107620642A - Internal combustion engine - Google Patents
Internal combustion engine Download PDFInfo
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- CN107620642A CN107620642A CN201710574302.3A CN201710574302A CN107620642A CN 107620642 A CN107620642 A CN 107620642A CN 201710574302 A CN201710574302 A CN 201710574302A CN 107620642 A CN107620642 A CN 107620642A
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- cylinder block
- travel mechanism
- combustion engine
- internal combustion
- cylinder
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Abstract
It is a kind of possess can relative to crankcase relatively move cylinder block internal combustion engine, possess the unilateral cylinder block travel mechanism for being only configured at the internal combustion engine, a pair of guiding walls for being arranged at crankcase, support cylinder block side supporting member and press cylinder block side pressing component.And, guiding wall in the configuration side of cylinder block travel mechanism, supporting member is installed on the upper position of installation site of the other end than connecting member and pressing component is installed on the position of the installation site of the other end than connecting member on the lower, guiding wall in the opposite side in configuration side with cylinder block travel mechanism, supporting member and pressing component are separated with predetermined compartment of terrain and are installed on the position than the pressing component (bottom side of cylinder block) on the lower.
Description
Technical field
The present invention relates to internal combustion engine.
Background technology
In JP2012-219745A, as possess can relative to crankcase relatively move cylinder block in the past in
Combustion engine, disclose following internal combustion engine：Possess two eccentric shafts (camshaft) for the both sides for being respectively arranged at the internal combustion engine；For making
The mutual reverse rotation of eccentric shaft and make cylinder block relatively move a drive shaft；And the actuating for rotating drive shaft
Device.In the conventional internal combustion engine, further, tilted to suppress cylinder block to the direction different from relative movement direction, by
The side of one side of pressing component (force application mechanism) pressing cylinder block, thus supports the opposing party's of cylinder block with supporting member
Side.
The content of the invention
So, conventional internal combustion engine needs for eccentric shaft to be respectively arranged at the both sides of internal combustion engine, and then needs that can make
The mode configuration driven axle of the mutual reverse rotation of the eccentric shaft.Integrally maximized accordingly, there exist internal combustion engine, the weight of internal combustion engine
This increased problem.
In addition, in the side for the side that cylinder block is pressed by pressing component, the side that supports with supporting member the opposing party
In the case of, when moving cylinder block, the side of cylinder block, with and the pressing component that abuts of side of the cylinder block and supporting
Resistance (resistance to sliding) is produced between the respective bearing surface of part.
Here, in order to suppress the maximization of internal combustion engine and suppress the increase of weight, if for example, being intended in conventional internal combustion engine
Eccentric shaft is set to one and eccentric shaft is only configured to the one side of internal combustion engine, then when moving cylinder block, cylinder block becomes
Easily tilted to the direction different from relative movement direction.Incline to suppress cylinder block to the direction different from relative movement direction
Tiltedly, it is necessary to from pressing component with pressing more than load from cylinder block side to pressing component that inputted during the operating of internal combustion engine from
Power presses cylinder block.However, the pressing force of pressing component is bigger, then the power of cylinder block is clamped by pressing component and supporting member
It is bigger.Load when becoming big accordingly, there exist resistance to sliding when moving cylinder block, moving cylinder block puts on actuator
Load increase this problem.
The present invention is conceived to such problem points and made, it is therefore intended that suppression possesses can be relative to crankcase phase
Maximization to the internal combustion engine of mobile cylinder block simultaneously suppresses the increase of weight, and while suppress cylinder block to relative movement
The different direction in direction tilts load when suppression on one side moves cylinder block.
In order to solve above-mentioned problem, according to the technical scheme of the present invention, one kind possesses can be relative to crankcase phase
To mobile cylinder block and the internal combustion engine of the cylinder cover at the top for being installed on cylinder block, possess：Cylinder block travel mechanism, from
In the case of the axis direction observation internal combustion engine for being rotatably freely supported on the bent axle of crankcase, the cylinder block travel mechanism
The one side of internal combustion engine is only configured at, for making cylinder block be relatively moved relative to crankcase；A pair of guiding walls, its with cylinder block
The relative mode in side be arranged at crankcase；Supporting member, it is respectively arranged in drawing for the configuration side of cylinder block travel mechanism
Guide wall and the guiding wall of the side opposite with the configuration side of cylinder block travel mechanism, support the side of cylinder block；And press section
Part, its be respectively arranged in cylinder block travel mechanism configuration side guiding wall and with cylinder block travel mechanism configuration side it is opposite
The guiding wall of side, press the side of cylinder block.Cylinder block travel mechanism possesses：A piece control shaft, it is supported by crankcase, and
And with main shaft part and from eccentric eccentric part of the position with axle center of scheduled volume in the axle center of the main shaft part；Connecting member,
One end is installed on eccentric part, and its other end is installed on cylinder block, for control shaft and cylinder block to be linked；And
Actuator, it is used to make control shaft rotate to both direction in predetermined rotating range, makes the axle center of eccentric part with main shaft part
Axle center centered on be swung up in the relative movement side of cylinder block.Also, in drawing for the configuration side of cylinder block travel mechanism
Guide wall, supporting member be installed on the installation site of the other end than connecting member by the position of the top side of cylinder block and by
Splenium part is installed on the installation site of the other end than connecting member by the position of the bottom side of cylinder block, is moved with cylinder block
The guiding wall for configuring the opposite side in side of motivation structure, supporting member are separated with predetermined compartment of terrain with pressing component and are installed in vapour
Position on the relative movement direction of cylinder body than the pressing component by the bottom side of the cylinder block.
According to the technical scheme of the present invention, it can suppress to possess the cylinder block that can be relatively moved relative to crankcase
The maximization of internal combustion engine and the increase for suppressing weight, and can be while suppressing cylinder block to the side different from relative movement direction
To load when tilting that suppression moves cylinder block on one side.
Brief description of the drawings
Fig. 1 is the approximate three-dimensional map of the internal combustion engine of an embodiment of the invention.
Fig. 2 is the outline exploded perspective view of the internal combustion engine shown in Fig. 1.
Fig. 3 is the outline exploded perspective view of the internal combustion engine shown in Fig. 1.
Fig. 4 is the general profile chart of the internal combustion engine of an embodiment of the invention.
Fig. 5 is the figure that the action to cylinder block travel mechanism illustrates.
Fig. 6 is that the action to cylinder block travel mechanism illustrates, schematically shows cylinder block travel mechanism
Figure.
Fig. 7 be to cylinder block travel mechanism to be only arranged to the one side of internal combustion engine in the case of the problem of point illustrate
Figure.
Fig. 8 is the supporting member and pressing component for representing to act on guiding mechanism during the operating of internal combustion engine with arrow
Power figure.
Fig. 9 A be to by relative supporting member and pressing component the reason for cylinder axis is configured at identical height upwards
The figure illustrated.
Fig. 9 B be to by relative supporting member and pressing component the reason for cylinder axis is configured at identical height upwards
The figure illustrated.
Figure 10 is the figure of the variation for the internal combustion engine for showing an embodiment of the invention.
Embodiment
Hereinafter, embodiments of the present invention are described in detail referring to the drawings.In addition, in the following description, it is right
Same inscape marks same reference numeral.
Fig. 1 is the approximate three-dimensional map of the internal combustion engine 100 of an embodiment of the invention.Fig. 2 and Fig. 3 is Fig. 1 institutes respectively
The outline exploded perspective view of the internal combustion engine 100 shown.
As shown in Figure 1 to Figure 3, internal combustion engine 100 possesses crankcase 1, cylinder block 2, cylinder block travel mechanism 3 and vectoring aircraft
Structure 4.
Crankcase 1 rotatably supports bent axle 10, and possesses in the inside of crankcase 1 for storing cylinder block 2
Cylinder block incorporating section 11.
Cylinder block 2 can relative to crankcase 1 relatively movably turn into the split of crankcase 1, and one part store
In in the cylinder block incorporating section 11 of crankcase 1.Formed with cylinder 20 in cylinder block 2.In the present embodiment, four cylinders 20
Along the long side direction (hereinafter referred to as " cylinder block long side direction " of cylinder block 2.) it is in be formed in upright arrangemently.
Hereinafter, in addition to Fig. 1 to Fig. 3 referring also to Fig. 4 to the Inner Constitution of internal combustion engine 100, cylinder block travel mechanism 3 and
The details of guiding mechanism 4 illustrates.
Fig. 4 is the general profile chart of internal combustion engine 100.In addition, in Fig. 1 into Fig. 3, in order to prevent the numerous and diverse of accompanying drawing, and it is right
Internal combustion engine 100 shown in Fig. 4 eliminates the constituent part of a part.
As shown in figure 4, being provided with cylinder cover 5 at the top of cylinder block 2, food tray 6 is installed in the bottom of crankcase 1.
The piston 21 for bearing combustion pressure and being moved back and forth in the inside of cylinder 20 is accommodated with the inside of cylinder 20.
Piston 21 links via connecting rod 22 with bent axle 10, and the reciprocating motion of piston 21 is transformed into rotary motion by bent axle 10.
The space gone out by cylinder cover 5, cylinder 20 and the zoning of piston 21 turns into combustion chamber 7.
Bent axle 10 possesses crankshaft journal 10a, crank-pin 10b and crank arm 10c.
Crankshaft journal 10a is the part rotatably supported by crankcase 1.Crankshaft journal 10a axle center P1 turns into song
The pivot of axle 10.
Crank-pin 10b is the part of the big end for installing connecting rods 22.Crank-pin 10b axle center P2 is from crankshaft journal
The eccentric scheduled volume of 10a axle center P1.Therefore, when bent axle 10 rotates, crank-pin 10b axle center P2 rotates around axle center P1.
Crank arm 10c is the part for linking crankshaft journal 10a and crank-pin 10b.In the present embodiment, it is in order that bent
Axle 10 is swimmingly rotated, and balance weight 10d is provided with crank arm 10c.
Cylinder block travel mechanism 3 is the mechanism for making cylinder block 2 be relatively moved relative to crankcase 1, such as Fig. 2 to Fig. 4
Shown, it possesses a control shaft 30, connecting member 31 and actuator 32.
The cylinder block travel mechanism 3 of present embodiment is configured to, and cylinder block 2 can be made to be moved up in cylinder axis, so as to
Cylinder block 2 is set to change relative to the upward relative position of the cylinder axis of crankcase 1.By making cylinder block 2 exist relative to crankcase 1
Cylinder axis relatively moves upwards, so as to only change the volume of combustion chamber 7 with not changing the top dead center position of piston 21.This
Sample, by do not change piston 21 top dead center position only change combustion chamber 7 volume, so as to change internal combustion engine 100
Mechanical compression ratio.Therefore, the cylinder block travel mechanism 3 of present embodiment is sent out as the variable compression ratio of internal combustion engine 100
Wave function.In addition, mechanical compression ratio refers to according to the swept volume of the piston 21 during compression travel and the volume of combustion chamber 7 and machine
The compression ratio determined, represented by (combustion chamber volume+swept volume)/combustion chamber volume tool.
Control shaft 30 possesses：Main shaft part 30a, it is extended parallel to bent axle 10, and by being arranged at two groups of controls of crankcase 1
Bearing 12 (reference picture 2) processed rotatably supports；With eccentric part 30b (reference picture 4), it is in the axle center P3 from main shaft part 30a
The position of (reference picture 4) eccentric scheduled volume has axle center P4 (reference picture 4).Therefore, if making control shaft 30 rotate a circle, partially
Center portion 30b axle center P4 rotates a circle around main shaft part 30a axle center P3.As shown in Figures 2 and 3, in the present embodiment, it is eccentric
Portion 30b is each provided with one in a side of cylinder block long side direction and another side respectively.
Connecting member 31 is the part for the eccentric part 30b of control shaft 30 and cylinder block 2 to be linked.On connecting member
31, the one end of the downside (bottom side of cylinder block 2, the i.e. side of bent axle 10) of cylinder axial direction is installed on the eccentric part of control shaft 30
30b, the other end of the upside (top side of cylinder block 2, the i.e. side of cylinder cover 5) of cylinder axial direction, which is installed on, is supported in cylinder block
2 connecting pin 33.As shown in Figures 2 and 3, in the present embodiment, by two connecting members 31 by cylinder block long side direction
The eccentric part 30b of one side is with cylinder block 2 and by the eccentric part 30b of the another side of cylinder block long side direction and cylinder block 2
Link.
In addition, in the present embodiment, control shaft 30 is set to be so-called crank shape but it is also possible to be by axle center from master
Eccentric cam eccentric axle portion 30a axle center P3 is fixed on main shaft part 30a periphery, installs and connects in the periphery of the eccentric cam
The one end of knot part 31.
Connecting pin 33 is by being arranged at the short side direction of cylinder block 2 (respectively with cylinder block long side direction and cylinder axially in straight
The intersecting direction in angle.Hereinafter referred to as " cylinder block short side direction ".) the support 23 of side of a side support.Such as Fig. 2 institutes
Show, in the present embodiment, support 23 and eccentric part 30b are accordingly respectively in a side of cylinder block long side direction and another
One side is each provided with one.
Actuator 32 is to be used to assign driving torque to control shaft 30, and makes control shaft 30 in predetermined rotation angle range
The interior driving equipment rotated to both direction.In the present embodiment, it is used as actuator 32 using motor.
So, cylinder block travel mechanism 3 is configured to, in the axis from the bent axle 10 substantially uniform with cylinder block long side direction
In the case of direction observation internal combustion engine 100, the cylinder block travel mechanism 3 is only configured at the list in the left and right of the internal combustion engine 100
Side (being in the present embodiment a side of cylinder block short side direction), and cylinder block 2 is relatively moved relative to crankcase 1.
Guiding mechanism 4 is for suppressing cylinder block 2 to the direction inclined mechanism different from moving direction, possessing guiding wall
40th, supporting member 41 and pressing component 42.
Guiding wall 40 is the wall that crankcase 1 is arranged in a manner of relative with the side of cylinder block 2, and it is relative to cylinder block
2 side is separated with predetermined be configured at gap around cylinder block 2.In addition, in the following description, in especially needed difference
When, the guiding wall 40 of a side of the cylinder block short side direction of internal combustion engine 100 is referred to as " guiding wall 40a ", by cylinder block short side
The guiding wall 40 of the another side in direction is referred to as " guiding wall 40b ".
Supporting member 41 is the part for supporting the side of cylinder block 2, in the present embodiment, such as Fig. 2 and Fig. 3 institutes
Show, be respectively provided with two in each guiding wall 40a, 40b respectively.In addition, as shown in figure 4, supporting member 41 is to be formed at its one end
The mode of contacts side surfaces of bearing surface 411 and cylinder block 2 be installed on each guiding wall 40a, 40b.
Pressing component 42 is the part for the side of cylinder block 2 to be pressed towards supporting member 41, in present embodiment
In, as shown in Figures 2 and 3, respectively it is provided with two in each guiding wall 40a, 40b respectively.As shown in figure 4, present embodiment is pressed
Splenium part 42 possesses：Main body (English：Body) 421, it possesses opening portion；Plate 422 is abutted, it is with can be in cylinder block short side side
To both direction on the mode that moves be installed on the opening portion of main body 421；And spring 423, it is built in main body 421, right
Abut plate 422 and assign the pressing force for always pressing abutting plate 422 towards the side of cylinder block 2.Also, pressing component 42 is with energy
Enough modes for being pressed the side of cylinder block 2 towards supporting member 41 by abutting plate 422 are installed on each guiding wall 40a, 40b.
So, in the present embodiment, the unilateral cylinder block 2 of internal combustion engine 100 is supported by supporting member 41 by one side
Side while press the side with the cylinder block 2 of the unilateral opposite side of internal combustion engine 100 by pressing component 42, thus suppress
Cylinder block 2 tilts to the axially distinct direction of cylinder.In addition, suppress because vibrating caused by during the operating of internal combustion engine 100
And cylinder block 2 tilts to the axially distinct direction of cylinder.
In addition, as shown in Figures 2 to 4, in the present embodiment, the configuration as cylinder block travel mechanism 3 will be installed on
The guiding wall 40a of one side of the cylinder block short side direction of side supporting member 41 is configured at the other end than connecting member 31
Installation site (position of support 23) by cylinder axial direction upside position, similarly, by be installed on guiding wall 40a by
Splenium part 42 is configured at the installation site (position of support 23) of the other end than connecting member 31 by under cylinder axial direction
The position of side.In addition, the cylinder block short side direction that the side for turning into opposite with the configuration side of cylinder block travel mechanism 3 will be installed on
The guiding wall 40b supporting member 41 of another side be similarly configured at and leaned on than being installed on guiding wall 40b pressing component 42
The position of the downside of cylinder axial direction.On its reason, reference picture 8 is described later.
In addition, as shown in figure 4, in the present embodiment, by relative supporting member 41 and pressing component 42 in cylinder axis
Identical height is configured at upwards.That is, the guiding wall 40a for the configuration side for turning into cylinder block travel mechanism 3 supporting will be installed on
Part 41 and the pressing component 42 for being installed on the guiding wall 40b as the opposite side in configuration side with cylinder block travel mechanism 3
Identical height is configured at upwards in cylinder axis.In addition, the guiding wall that the configuration side for turning into cylinder block travel mechanism 3 will be installed on
40a pressing component 42 and it is installed on guiding wall 40b's as the opposite side in configuration side with cylinder block travel mechanism 3
Supporting member 41 is configured at identical height upwards in cylinder axis.On its reason, reference picture 9 is described later.
Next, the action of reference picture 5 and Fig. 6 to cylinder block travel mechanism 3 illustrates.
Fig. 5 is that the volume of the combustion chamber 7 when the piston 21 by cylinder block travel mechanism 3, will be made to be located at compression top center is
Even if minimum state, mechanical compression ratio are the internal combustion engine 100 of maximum state, with making the dextrorotation of control shaft 30 from the state
State of the volume of combustion chamber 7 when making the piston 21 be located at compression top center even if turning the predetermined anglec of rotation for maximum, machine
Tool compression ratio is compared the figure shown for the internal combustion engine 100 of the state of minimum.
Fig. 6 is by the internal combustion engine 100 for making mechanical compression ratio for maximum state, with making mechanical compression ratio in the same manner as Fig. 5
The figure shown is compared for the internal combustion engine 100 of the state of minimum, but in order to be readily appreciated that invention, Fig. 6 is schematically
Show the figure of cylinder block travel mechanism 3.In addition, Fig. 6 dotted line A is eccentric part 30b when making the control shaft 30 have rotated one week
Axle center P4 track.In addition, P5 is the axle center of connecting pin 33.
As shown in fig. 6, in the present embodiment, using the axle center by main shaft part 30a P3's and with cylinder axial direction
Parallel parallel lines Q by eccentric part 30b axle center P4 track A zonings into two half-circle areas when, made by actuator 32
It (is in the present embodiment figure that control shaft 30 rotates so that axle center P4 in the half-circle area of any one party to two direction of rotation
The half-circle area in middle left side) in the range of moved to two direction of rotation.
Also, cylinder block travel mechanism 3 is configured to, with figure right side make mechanical compression ratio for minimum state compared with,
When the making the state that mechanical compression ratio is maximum of left side in figure, eccentric part 30b axle center P4 are located at the downside (vapour of cylinder axial direction
The bottom side of cylinder body 2, the i.e. side of bent axle 10).
Thus, for example mechanical compression ratio is set to make control shaft for maximum state, by actuator 32 on the left of from figure
30 when turning clockwise, eccentric part 30b axle center P4 on the A of track towards cylinder axial direction upside (top side of cylinder block 2,
That is the side of cylinder cover 5) it is mobile.Thus, it is via the connecting member 31 linked with eccentric part 30b that connecting pin 33 is axial towards cylinder
Upside point-blank push to, therefore cylinder block 2 relative to crankcase 1 relatively pushed to cylinder axial direction upside.As a result, it is living
The volume of combustion chamber 7 when plug 21 is located at compression top center gradually increases, and mechanical compression ratio tapers into.
On the other hand, mechanical compression ratio is made to make control for minimum state, by actuator 32 such as on the right side of from figure
During 30 rotate counterclockwise of axle processed, eccentric part 30b axle center P4 is moved on the A of track towards the downside of cylinder axial direction.Thus, via
With connecting member 31 that eccentric part 30b links and connecting pin 33 is point-blank left behind towards the downside of cylinder axial direction, therefore cylinder
Body 2 is relatively pulled to the downside of cylinder axial direction relative to crankcase 1.As a result, burning when piston 21 is located at compression top center
The volume of room 7 is gradually reduced, and mechanical compression ratio becomes larger.
So, the cylinder block travel mechanism 3 of present embodiment passes through the control that makes to possess main shaft part 30a and eccentric part 30b
Axle 30 rotates, and make eccentric part 30b axle center P4 centered on main shaft part 30a axle center P3 on cylinder axis is upward the bottom
It is dynamic, cylinder block 2 is moved up and down upwards in cylinder axis from there through the connecting member 31 for being linked to eccentric part 30b.
In addition, in the present embodiment, by the list that such cylinder block travel mechanism 3 is only arranged to internal combustion engine 100
Side, thus suppresses the maximization of internal combustion engine 100, and suppresses the increase of weight.However, only set by cylinder block travel mechanism 3
In the case of the one side for being placed in internal combustion engine 100, the both sides with the cylinder block travel mechanism 3 to be arranged to internal combustion engine 100
Situation is compared, and the cylinder block revolving force that cylinder block 2 to be made rotates to certain direction of rotation during the operating of internal combustion engine 100 be present
This increased problem points.Hereinafter, the problem points, reference picture 7 are illustrated.
It (is in this embodiment cylinder block short side to cylinder block travel mechanism 3 to be only arranged to the one side of internal combustion engine 100 that Fig. 7, which is,
One side in direction) in the case of the problem of the figure that illustrates of point.In addition, in the figure 7, in order that invention is readily appreciated that and shown
Show cylinder block travel mechanism 3 to meaning property.
During the operating of internal combustion engine 100, burnt in the combustion chamber 7 of each cylinder 20, thus it is as shown in fig. 7, right
Cylinder cover 5 applies burning load F upward in figure.Now, as in the present embodiment, only match somebody with somebody in the one side of internal combustion engine 100
In the case of putting control shaft 30 and being linked control shaft 30 and cylinder block 2 by connecting member 31, because putting on the combustion of cylinder cover 5
Load F is burnt, mainly produces the cylinder to be turned clockwise centered on the other end of connecting member 31 in the figure of cylinder block 2 to be made
Body revolving force.That is, clockwise torque M in figure is produced around axle center P5.
Here, assuming that by cylinder block travel mechanism 3 is arranged at the both sides of internal combustion engine 100, to be for example arranged at cylinder block short
In the case of one side of edge direction and another side, produce with along a side of the cylinder block short side direction of internal combustion engine 100
Cylinder block 2 side configuration connecting member 31 the other end centered on, the cylinder that turns clockwise of cylinder block to be made 2
Body revolving force.In addition, in contrast to this, produce with along the cylinder of the another side of the cylinder block short side direction of internal combustion engine 100
Centered on the other end of the connecting member 31 of the side configuration of body 2, the rotation of the cylinder block of the rotate counterclockwise of cylinder block to be made 2
Power.Therefore, the cylinder block revolving force that cylinder block 2 to be made turns clockwise and the cylinder block of the rotate counterclockwise of cylinder block 2 to be made revolve
Offset with turning dynamic balance, cylinder block revolving force is not produced in cylinder block 2 on surface.
However, in the case where cylinder block travel mechanism 3 is only arranged at into the one side of internal combustion engine 100, unlike by cylinder block
The such cylinder block revolving force of situation that travel mechanism 3 is arranged at both sides is cancelled.Therefore, only set by cylinder block travel mechanism 3
In the case of the one side for being placed in internal combustion engine 100, cylinder block 2 can be applied during the operating of internal combustion engine 100 cylinder block 2 to be made to
The cylinder block revolving force of certain direction of rotation rotation, the cylinder block revolving force act on guiding mechanism 4.
Fig. 8 is the supporting member 41 indicated by an arrow that guiding mechanism 4 is acted on during the operating of internal combustion engine 100 and pressing
The figure of the power of part 42.
In the example shown in Fig. 8, because of the load F that burns, and what cylinder block 2 to be made turned clockwise is applied to cylinder block 2
Cylinder block revolving force.That is, to be made cylinder block 2 into figure right side inclined power is acted on cylinder block 2.Therefore, as shown in figure 8, closing
In the guiding wall 40a of a side of the cylinder block short side direction for being installed on the configuration side as cylinder block travel mechanism 3 supporting
Part 41 and pressing component 42, mainly to being installed on the other end than connecting member 31 by the position of the upside of cylinder axial direction
Supporting member 41 is acted on because of cylinder block revolving force F1 caused by burning load F.In addition, moved on being installed on to turn into cylinder block
The guiding wall 40b of the another side of the cylinder block short side direction of the opposite side in configuration side of mechanism 3 supporting member 41 and press
Splenium part 42, mainly the supporting member 41 for being installed on the axial downside of cylinder is acted on because cylinder block caused by burning load F revolves
Turn power F1 '.
In addition, during the operating of internal combustion engine 100, because of the inclination of the connecting rod 22 in the reciprocating motion of piston 21, to vapour
The power (piston thrust) of the acting cylinder body short side direction of cylinder body 2.Specifically, cylinder block 2 is applied cylinder block 2 from piston 21
Push the piston propulsive thrust F2 of a side of cylinder block short side direction to and cylinder block 2 is pushed to the other end of cylinder block short side direction
The piston positive thrust F2 ' of side.Therefore, as shown in figure 8, the guiding wall 40a of a side to being installed on cylinder block short side direction
Supporting member 41 and pressing component 42 act on piston propulsive thrust F2.In addition, the another side to being installed on cylinder block short side direction
Guiding wall 40b supporting member 41 and pressing component 42 act on piston positive thrust F2 '.
Further, when making cylinder block 2 be moved up in cylinder axis, because of the connecting member 31 of cylinder block travel mechanism 3
Tilt, (travel mechanism propulsive thrust F3 and travel mechanism are just for the power from connecting member 31 to the acting cylinder body short side direction of cylinder block 2
Thrust F3 ').
So, in the present embodiment, in the portion acted on by cylinder block revolving force F1 and F1 ' caused by burning load F
Supporting member 41 is put in distribution.Conversely speaking, in the part acted on by cylinder block revolving force F1 and F1 ' caused by burning load F
Pressing component 42 is not configured.Hereinafter, its reason is illustrated.
As it was previously stated, in the present embodiment, the unilateral cylinder of internal combustion engine 100 is supported by supporting member 41 by one side
The side of body 2, while pressing the side with the cylinder block 2 of the unilateral opposite side of internal combustion engine 100 by pressing component 42, thus
Suppress cylinder block 2 to tilt to the axially distinct direction of cylinder.
Now, supporting member 41 is fixed on guiding wall 40a and motionless, but pressing component 42 passes through the pressing force of spring 423
Abutting plate 422 is pressed on to the side of cylinder block 2.Therefore, if applying the power bigger than the pressing force of spring 423 from the side of cylinder block 2,
Then being possible to cylinder block 2 can roll tiltedly to pressing component 42.In order to prevent the above situation, as long as the pressing force of increase spring 423
.
However, the pressing force of the spring 423 turns into the power always acted on the side of cylinder block 2, therefore more increase
The pressing force of spring 423, the then power that cylinder block 2 is clamped by pressing component 42 and supporting member 41 are bigger.Therefore, cylinder block is made
During 2 movement, the resistance of caused cylinder axial direction is (hereinafter referred to as " sliding between supporting member 41 and pressing component 42 and cylinder block
Dynamic resistance ") it can increase.
If resistance to sliding increases, make load of the cylinder block 2 when cylinder axis moves up, i.e. for revolving control shaft 30
The driving torque increase turned.Thus, for example in the case where making actuator 32 be motor, electric power consumption increase, as a result can
Cause the deterioration of fuel economy.In addition, it is similarly desirable to increase the maximum driving torque of actuator 32, therefore cause actuator 32
Maximization, high capacity, as a result cause the maximization and/or weight increase of internal combustion engine 100.
If here, configure pressing component in the part acted on by cylinder block revolving force F1 and F1 ' caused by burning load F
42, then the pressing component 42 on guiding wall 40a sides by the pressing force of spring 423, it is necessary to be set as cylinder block revolving force F1, work
Fill in the pressing force of the propulsive thrust F2 and travel mechanism propulsive thrust F3 above of making a concerted effort.In addition, the press section on guiding wall 40b sides
Part 42 by the pressing force of spring 423, it is necessary to be set as that cylinder block revolving force F1 ', piston positive thrust F2 ' and travel mechanism are just pushing away
The pressing force of the power F3 ' above of making a concerted effort.That is, if in the portion acted on by cylinder block revolving force F1 and F1 ' caused by burning load F
Pressing component 42 is put in distribution, then the power of the above of making a concerted effort of these three power is always carried out from pressing component 42 to the side of cylinder block 2
Effect.
On the other hand, as in the present embodiment, by because of cylinder block revolving force F1 and F1 ' caused by burning load F
The part acted on configures supporting member 41 and does not configure pressing component 42, thus, the pressing component on guiding wall 40a sides
42, if by the pressing force of spring 423 be set as piston propulsive thrust F2 and travel mechanism propulsive thrust F3 the two power make a concerted effort with
On pressing force.In addition, the pressing component 42 on guiding wall 40b sides, as long as the pressing force of spring 423 is set as living
The pressing force of the above of making a concerted effort of the two power of plug positive thrust F2 ' and travel mechanism positive thrust F3 '.
In other words, in the present embodiment, cylinder block revolving force F1 and F1 ' does not act on pressing component 42, therefore can
The pressing force of spring 423 is set as to low value corresponding to which.Especially because of cylinder block revolving force F1 caused by burning load F
And F1 ' is compared with piston propulsive thrust F2, piston positive thrust F2 ', travel mechanism propulsive thrust F3 and travel mechanism positive thrust F3 '
It is very big, therefore spring can thus be greatly lowered by making cylinder block revolving force F1 and F1 ' not act on pressing component 42
423 pressing force.
By configuring supporting member 41 in the part that cylinder block revolving force F1 and F1 ' are acted in this wise and not configuring pressing
Part 42, thus, compared with the situation of the part acted on pressing cylinder block revolving force F1 and F1 ' by pressing component 42, energy
Enough reduce the pressing force of the spring 423 of pressing component 42.Therefore, it is possible to reduce make cylinder block 2 when cylinder axis moves up
Resistance to sliding.As a result, it is possible to suppress the deterioration of fuel economy and/or the maximization of actuator, high capacity.Therefore, it is possible to
Further suppress maximization, the weight increase of internal combustion engine 100.
Referring next to Fig. 9 A and Fig. 9 B, to relative supporting member 41 and pressing component 42 are configured at upwards in cylinder axis
The reason for identical height, illustrates.
Fig. 9 A are shown as in the present embodiment by relative supporting member 41 and pressing component 42 in cylinder axial direction
On be configured at identical height in the case of, act on because of the pressing force of pressing component 42 cylinder block 2 power figure.The opposing party
Face, Fig. 9 B are to show differently matching somebody with somebody relative supporting member 41 and pressing component 42 upwards in cylinder axis with present embodiment
The figure of one of the power of cylinder block 2 is acted in the case of being placed in different height, because of the pressing force of pressing component 42.
As shown in Fig. 9 A and Fig. 9 B, in cylinder block 2, effect has a pressing force F4 for coming from pressing component 42, and from branch
Bearing portion part 41 acts on the counter-force F4 ' (=F4) for having above-mentioned pressing force F4.
Now, as shown in Figure 9 A, relative supporting member 41 and pressing component 42 are being configured at phase upwards in cylinder axis
In the case of same height, clockwise torque M1 caused by the center of gravity C because of the pressing force F4 of pressing component 42 around cylinder block 2
Arm of force r1 length, with center of gravity C because of counter-force F4 ' and around cylinder block 2 caused by torque M2 counterclockwise arm of force r2 length
Degree turns into equal.Therefore, torque M1 (=F4 × r1) turns into equal with torque M2 (=F4 ' × r2) size, therefore torque M1
Offset with torque M2, do not produce the torque of the center of gravity C around cylinder block 2 on surface.
On the other hand, such as shown in Figure 9 B, relative supporting member 41 and pressing component 42 is upward in cylinder axis
In the case of being configured at different height, arm of force r1 length is different from arm of force r2 length.Therefore, in Fig. 9 B example,
Torque M1 (=F4 × r1) torque gradient M2 (=F4 ' × r2) greatly, can produce torque around the center of gravity C of cylinder block 2.As a result, because of the power
Square and caused power can act on supporting member 41 or pressing component 42, therefore resistance to sliding can increase.
Therefore, in the present embodiment, relative supporting member 41 and pressing component 42 are configured at upwards in cylinder axis
Identical height.Thereby, it is possible to prevent the torque of the center of gravity C around cylinder block 2, therefore the increasing of resistance to sliding can be suppressed
Add.
Present embodiment from the description above, possessing can be relative in the cylinder block 2 that crankcase 1 relatively moves
Combustion engine 100, possesses：Cylinder block travel mechanism 3, in the axis direction from the bent axle 10 for being rotatably freely supported on crankcase 1
In the case of observing internal combustion engine 100, the cylinder block travel mechanism 3 is only configured at the one side of the internal combustion engine 100, for making cylinder
Body 2 relatively moves relative to crankcase 1；A pair of guiding walls 40a, 40b, it is configured in a manner of relative with the side of cylinder block 2
In the left and right of crankcase 1；Supporting member 41, its be respectively arranged in cylinder block travel mechanism 3 configuration side guiding wall 40a and with
The guiding wall 40b for configuring the opposite side in side of cylinder block travel mechanism 3, support the side of cylinder block 1；And pressing component
42, it is respectively arranged in the guiding wall 40a of the configuration side of cylinder block travel mechanism 3 and the configuration side with cylinder block travel mechanism 3
The guiding wall 40b of opposite side, press the side of cylinder block 2.
Cylinder block travel mechanism 3 is configured to, and possesses：A piece control shaft 30, it is supported by crankcase 1, and has main shaft
Portion 30a and there is axle center P4 eccentric part 30b in the position of the eccentric scheduled volume of axle center P3 from main shaft part 30a；Linking part
Part 31, one end is installed on eccentric part 30b, and its other end is installed on cylinder block 2, for by control shaft 30 and cylinder
Body 2 links；And actuator 32, it is used to make control shaft 30 rotate to both direction in predetermined rotating range, makes bias
Portion 30b axle center is swung up centered on main shaft part 30a axle center in the relative movement side of cylinder block 2.
Also, in the guiding wall 40a of the configuration side of cylinder block travel mechanism 3, supporting member 41, which is installed on, compares connecting member
Installation site (the position of support 23 of 31 the other end.Axle center P5) by the upside (vapour for relatively moving direction of cylinder block 2
The top side of cylinder body 2) position, and the installation site that pressing component 42 is installed on than the other end of connecting member 31 leans on vapour
The position of the downside (bottom side of cylinder block 2) in the relative movement direction of cylinder body 2.In addition, match somebody with somebody with cylinder block travel mechanism 3
The guiding wall 40b of the opposite side in side is put, supporting member 41 is separated with predetermined compartment of terrain with pressing component 42 and is installed on than pressing
Position of the part 42 by the downside (bottom side of cylinder block 2) in the relative movement direction of cylinder block 2.
Thus, according to the internal combustion engine 100 of present embodiment, only by rotating a control shaft 30, it becomes possible to via even
Knot part 31 makes cylinder block 2 be relatively moved relative to crankcase 1.Therefore, it is as long as a control shaft 30 is flat for example with bent axle 10
Row ground is only configured at the one side of internal combustion engine 100, as a result, cylinder block travel mechanism 3 can be only configured to the list of internal combustion engine
Side.Therefore, it is not required that eccentric shaft is configured at the both sides of internal combustion engine 100 by conventional internal combustion engine like that as the aforementioned, in addition,
The drive shaft that need not be configured to make two eccentric shafts to rotate, therefore can suppress to possess can be relative relative to crankcase 1
The maximization of the internal combustion engine 100 of mobile cylinder block 2 simultaneously suppresses the increase of weight.
In addition, in the case where the cylinder block travel mechanism 3 of such composition is only configured at into the one side of internal combustion engine 100,
The torque M around axle center P5 is mainly produced because of burning load F, acts on cylinder block 2 cylinder block 2 to be made to cylinder block travel mechanism
Cylinder block the revolving force F1 and F1 ' of 3 sides rotation.Therefore, as in the present embodiment, in the configuration side of cylinder block travel mechanism 3
Guiding wall 40a, the installation site (axle center P5) that supporting member 41 is installed on than the other end of connecting member 31 is leaned on into cylinder
The position of the upside in the relative movement direction of body 2 and pressing component 42 is installed on to the peace of the other end than connecting member 31
Holding position (axle center P5) by cylinder block 2 relative movement direction downside position, on the other hand, with cylinder block travel mechanism
The 3 guiding wall 40b for configuring the opposite side in side, is separated with predetermined compartment of terrain with pressing component 42 by supporting member 41 and is installed on
Position than pressing component 42 by the downside in the relative movement direction of cylinder block 2, thus, it is possible to support cylinder by supporting member 41
The side of the cylinder block 2 of body revolving force F1 and F1 ' effect.
Therefore, with being pressed as pressing component 42 because burn cylinder block revolving force F1 and F1 ' big caused by load F are acted on
The situation of part compare, the pressing force of the spring 423 of pressing component 42 can be reduced.Thus, it is possible to reducing makes cylinder block 2
Resistance to sliding when cylinder axis moves up.As a result, it is possible to suppress fuel economy deterioration and/or actuator it is large-scale
Change, high capacity.Therefore, it is possible to further suppress the maximization of internal combustion engine 100, weight increase.
Especially, according to the internal combustion engine 100 of present embodiment, it is installed on the guiding of the configuration side of cylinder block travel mechanism 3
Wall 40a supporting member 41 and be installed on the guiding wall 40b of the opposite side in configuration side of cylinder block travel mechanism 3 by
Splenium part 42, identical height is configured on the relative movement direction of cylinder block.In addition, it is installed on cylinder block travel mechanism 3
Configuration side guiding wall 40a pressing component 42 and be installed on and the opposite side in configuration side of cylinder block travel mechanism 3
Guiding wall 40b supporting member 41, identical height is configured on the relative movement direction of cylinder block.
Therefore, it is possible to suppress to produce torque around the center of gravity C of cylinder block 2 because of the pressing force of pressing component 42, so can
Suppress the increase of resistance to sliding.As a result, it is possible to further suppress the deterioration of fuel economy and/or maximizing, greatly for actuator
It is capacity, it can further suppress maximization, the weight increase of internal combustion engine 100.
More than, embodiments of the present invention are illustrated, but above-mentioned embodiment only shows this hair
A part for bright application examples, purport do not lie in the tool that the technical scope of the present invention is defined in above-mentioned each embodiment
Body is formed.
Such as in the above-described embodiment, use and cylinder block is pressed on by plate 422 is abutted by the force of spring 423
The pressing component 42 of the composition of 2 side, but the composition of pressing component 42 is not limited to such composition.
Such as shown in Figure 10 or, in the inside of guiding wall 40, the oil circuit that is connected with the 1st hydraulic pressure chamber 53 is set
(not shown), abutting plate 422 is pressed on to the side of cylinder block 2 using the clearance adjuster 50 of fluid pressure type as pressing component 42
Face, the gap abutted between plate 422 and the side of cylinder block 2 is always remained zero.
Clearance adjuster 50 possesses：Plunger 51, it is integrated with abutting plate 422；Main body 52, it stores plunger 51；1st liquid
Pressure chamber 53, it is formed at the inside of plunger 51；2nd hydraulic pressure chamber 54, it is formed at the inside of main body 52；Check ball 56, it will be even
The access 55 of logical 1st hydraulic pressure chamber 53 and the 2nd hydraulic pressure chamber 54 is closed；And spring 57, it is configured in the 2nd hydraulic pressure chamber 54 and total
It is to press plunger 51 to the side of cylinder block 2.
On clearance adjuster 50, when no application comes from the load of the side of cylinder block 2, pass through the spring force of spring 57
Plunger 51 is pushed to, abutting plate 422 is connected to the side of cylinder block 2, the side of plate 422 and cylinder block 2 will be abutted
Between gap always remain zero.On the other hand, if coming from the load of the side of cylinder block 2, plunger to abutting the application of plate 422
51 are pressed and the 2nd hydraulic pressure chamber 54 are sealed to form as high pressure by check ball 56.As a result, the liquid of the 2nd hydraulic pressure chamber 54 is passed through
Precalculated position is fixed in the position of plunger 51 by pressure, abuts the side that plate 422 is pressed against cylinder block 2.
Cylinder block 2 is pressed on by plate 422 is abutted by the force of spring 423 like that having used embodiment described above
Side composition part as pressing component 42 in the case of, the pressing force of spring 423 always acts on cylinder block 2.
On the other hand, in the case where having used clearance adjuster 50 as pressing component 42, come from no application
During the load of the side of cylinder block 2, only the spring-force driven dual of spring 57 is in cylinder block 2.When being applied with load from the side of cylinder block 2,
Gap adjuster 50 is acted on the hydraulic pressure suitable with the load to suppress the inclination of cylinder block 2, therefore can make gap adjustment
The spring force of the spring 57 of device 50 is smaller than the spring force of the spring 423 of above-mentioned embodiment.Therefore, by using gap adjustment
Device 50 is used as pressing component 42, thus, it is possible to reduce resistance to sliding when not applying big load from the side of cylinder block 2.
In addition, in the above-described embodiment, make connecting member 31 towards cylinder block outer incline, but can also be with relative
Being located at the mode of the side of cylinder block 2 in the other end of the one end connecting member 31 of connecting member 31 makes connecting member 31 towards vapour
Cylinder body is tilted.
In addition, in the above-described embodiment, with two connecting members 31 by the eccentric part 30b and cylinder block of control shaft 30
2 link, but the radical of connecting member 31 is not limited to two, can also increase and decrease as needed.
Claims (3)
1. a kind of internal combustion engine, possess the cylinder block that can be relatively moved relative to crankcase and the top for being installed on the cylinder block
Cylinder cover, it is characterised in that
Possess：
Cylinder block travel mechanism, in the internal combustion engine from the axis direction of bent axle for being rotatably freely supported on the crankcase
In the case of, the cylinder block travel mechanism is only configured at the one side of the internal combustion engine, for making the cylinder block relative to described
Crankcase relatively moves；
A pair of guiding walls, it is arranged at the crankcase in a manner of relative with the side of the cylinder block；
Supporting member, its be respectively arranged in the cylinder block travel mechanism configuration side the guiding wall and with the cylinder block
The guiding wall for configuring the opposite side in side of travel mechanism, support the side of the cylinder block；And
Pressing component, its be respectively arranged in the cylinder block travel mechanism configuration side the guiding wall and with the cylinder block
The guiding wall for configuring the opposite side in side of travel mechanism, the side of the cylinder block is pressed,
The cylinder block travel mechanism possesses：
A piece control shaft, it is supported by the crankcase, and with main shaft part and eccentric pre- from the axle center of the main shaft part
Quantitative position has the eccentric part in axle center；
Connecting member, one end is installed on the eccentric part, and its other end is installed on the cylinder block, for by institute
Control shaft is stated with the cylinder block to link；And
Actuator, it is used to make the control shaft rotate to both direction in predetermined rotating range, makes the eccentric part
Axle center is swung up centered on the axle center of the main shaft part in the relative movement side of the cylinder block,
The guiding wall in the configuration side of the cylinder block travel mechanism, the supporting member are installed on than the connecting member
The other end installation site by the position of the top side of the cylinder block, and the pressing component is installed on than the company
The installation site of the other end of knot part leans on the position of the bottom side of the cylinder block,
The guiding wall in the opposite side in configuration side with the cylinder block travel mechanism, the supporting member are pressed with described
Splenium part is separated with predetermined compartment of terrain and is installed on the relative movement direction of the cylinder block leans on the vapour than the pressing component
The position of the bottom side of cylinder body.
2. internal combustion engine according to claim 1,
Be installed on the supporting member of the guiding wall of the configuration side of the cylinder block travel mechanism and be installed on it is described
The pressing component of the guiding wall for configuring the opposite side in side of cylinder block travel mechanism, in the relative of the cylinder block
Identical height is configured on moving direction.
3. internal combustion engine according to claim 1 or 2,
Be installed on the pressing component of the guiding wall of the configuration side of the cylinder block travel mechanism and be installed on it is described
The supporting member of the guiding wall for configuring the opposite side in side of cylinder block travel mechanism, in the relative of the cylinder block
Identical height is configured on moving direction.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-140591 | 2016-07-15 | ||
| JP2016140591 | 2016-07-15 | ||
| JP2017-125512 | 2017-06-27 | ||
| JP2017125512A JP2018017232A (en) | 2016-07-15 | 2017-06-27 | Internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107620642A true CN107620642A (en) | 2018-01-23 |
Family
ID=61076758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710574302.3A Pending CN107620642A (en) | 2016-07-15 | 2017-07-14 | Internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2018017232A (en) |
| CN (1) | CN107620642A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06504826A (en) * | 1990-12-03 | 1994-06-02 | サーブ オートモービル アクチボラグ | Combustion engine with variable compression ratio |
| GB2406614A (en) * | 2003-10-01 | 2005-04-06 | Lotus Car | Variable compression ratio i.c. engine |
| JP2008309024A (en) * | 2007-06-13 | 2008-12-25 | Toyota Motor Corp | Variable compression ratio internal combustion engine |
| US20100229834A1 (en) * | 2009-03-16 | 2010-09-16 | Manousos Pattakos | Variable compression ratio engine |
-
2017
- 2017-06-27 JP JP2017125512A patent/JP2018017232A/en active Pending
- 2017-07-14 CN CN201710574302.3A patent/CN107620642A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06504826A (en) * | 1990-12-03 | 1994-06-02 | サーブ オートモービル アクチボラグ | Combustion engine with variable compression ratio |
| GB2406614A (en) * | 2003-10-01 | 2005-04-06 | Lotus Car | Variable compression ratio i.c. engine |
| JP2008309024A (en) * | 2007-06-13 | 2008-12-25 | Toyota Motor Corp | Variable compression ratio internal combustion engine |
| US20100229834A1 (en) * | 2009-03-16 | 2010-09-16 | Manousos Pattakos | Variable compression ratio engine |
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|---|---|
| JP2018017232A (en) | 2018-02-01 |
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