Exhaust gas bypass device and turbocharger with it
Technical field
The present invention relates to the technical field of engines of vehicle, especially a kind of exhaust gas bypass device and the turbine with it increase
Depressor.
Background technique
Requirement with people to the engine power performance, economic performance of automobile is continuously improved, bypass type turbocharging
Device on the engine using more and more common.
Bypass type turbocharger can be when high engine speeds rotate, will be a part of by the unlatching of exhaust gas bypass device
Exhaust gas is discharged from the bypass of turbocharger, reduces the acting of turbine, reduces the revolving speed of turbocharger, then realizes to hair
The control of motivation performance.Fig. 1 is the structural schematic diagram of exhaust gas bypass device in the prior art, as shown in Figure 1, exhaust gas bypass device
Including swing arm sleeve 11, Rocker arm assembly 12, vent valve linking arm 13 and vent valve 14.Rocker arm assembly 12 include rocker arm shaft 121 and
Rocking handle 122, one end of rocker arm shaft 121 are connected after being fixed on rocking handle 122 with the distance rod (not shown) of actuator, work as rocker arm
When axis 121 is inserted into swing arm sleeve 11, rocker arm shaft 121 stretches out swing arm sleeve 11, rocker arm shaft 121 far from the other end of rocking handle 122
Stretch out swing arm sleeve 11 one end be connected with vent valve linking arm 13, the one end of vent valve linking arm 13 far from rocker arm shaft 121 and
Vent valve 14 is connected, and vent valve 14 is set in the exhaust outlet (not shown) on supercharger volute.Vent valve 14 is equipped with connection
Pin shaft 141, vent valve linking arm 13 is equipped with connecting hole (not shown), when vent valve 14 is connect with vent valve linking arm 13,
Connection pin shaft 141 is protruded into connecting hole first, is then clipped on connection pin shaft 141 by a fixinig plate 142, makes vent valve
Linking arm 13 is fixed between fixinig plate 142 and vent valve 14.When distance rod, which shakes Rocker arm assembly 12, to be rotated, Rocker arm assembly 12
It drives vent valve 14 to rotate around the axis of rocker arm shaft 121 by vent valve linking arm 13, vent valve 14 is then made to leave valve seat,
Realize the unlatching of exhaust gas bypass device and the discharge of exhaust gas.
In the assembly of exhaust gas bypass device, between rocker arm shaft 121 and the inner surface of swing arm sleeve 11, rocking handle 122 and rocker arm
Between connection pin shaft 141 between the end face of axle sleeve 11 and on vent valve 14 and fixinig plate 142 and vent valve linking arm 13 all
There are certain movement clearances.Booster during the work time, along with the variation of engine load, leads to the exhaust of engine
Fluctuation continuously emerges in pressure, and the fluctuation of pressure at expulsion can generate following influence: first, due to rocker arm shaft 121 and swing arm sleeve
Radially there is gap in rocker arm shaft 121 between 11, therefore exhaust gas can be overflowed outward by above-mentioned gap and push 121 band of rocker arm shaft
Shake arm assembly 12 to move to the direction away from turbocharger housing.Since Rocker arm assembly 12 is simultaneously by exhaust gas to outside volute
Motive force and actuator motive force of the distance rod into volute, two opposite power can make the rocker arm shaft of Rocker arm assembly 12
121 move axially in reciprocal fashion in swing arm sleeve 11, and Rocker arm assembly 12 can generate shock with the end face of swing arm sleeve 11 at this time, from
And generate abnormal sound and vibration;Second, the fluctuation of pressure at expulsion causes vent valve 14 to generate rotation, due to the connection on vent valve 14
The presence in gap between pin shaft 141 and vent valve linking arm 13, vent valve 14 can generate in rotary course taps abnormal sound and shake
It is dynamic.
In existing exhaust gas bypass device, without actively reduce between Rocker arm assembly and swing arm sleeve and vent valve and
The measure of abnormal sound and vibration between vent valve linking arm, this leads to have the automobile of bypass type turbocharger generally existing larger
NVH (Noise, Vibration, Harshness, noise, vibration and sound vibration roughness) problem, to reduce engine
Performance affects the comfort property of automobile.
Summary of the invention
The purpose of the present invention is to provide a kind of exhaust gas bypass device and with its turbocharger, exhaust gas bypass dress
Set abnormal sound and the vibration that can be reduced in the process of running between Rocker arm assembly and swing arm sleeve.
Another object of the present invention is to provide a kind of exhaust gas bypass device and with its turbocharger, by the exhaust gas
Exchange device can reduce abnormal sound and the vibration between vent valve and vent valve linking arm in the process of running.
The present invention provides a kind of exhaust gas bypass device, including rocker arm shaft, swing arm sleeve, vent valve linking arm and vent valve,
The rocker arm shaft is arranged in the swing arm sleeve and can rotate in the swing arm sleeve, and the vent valve passes through the deflation
Valve linking arm is connected on the rocker arm shaft, and multiple stable chutes are formed on the inner surface of the swing arm sleeve, the multiple steady
Chute is distributed on the inner surface of the swing arm sleeve spaced reciprocally along the axial direction of the swing arm sleeve, the exhaust gas bypass
Device further includes rocking handle, and the rocking handle and the vent valve linking arm are connected to the both ends of the rocker arm shaft, the rocker arm
Axle sleeve is formed with diversion groove, inner surface of the diversion groove from the swing arm sleeve on the end face of the rocking handle side
Side extends to the outer surface side of the swing arm sleeve, and the vent valve is equipped with a connection pin shaft, the vent valve connection
One end of the closely described vent valve of arm rest is equipped with connecting hole and passes through a fixinig plate after the connection pin shaft protrudes into the connecting hole
The vent valve linking arm is fixed between the fixinig plate and the vent valve, is provided with accommodating on the connection pin shaft
Slot, the hole wall of the connecting hole are sticked in the accommodation groove, and two anti-rotations are additionally provided on the outer peripheral edge position of the vent valve
Turn limited post, for the connecting pin axle position between described two anti-rotational limited posts, described two anti-rotational limited posts distinguish position
In the two sides of the vent valve linking arm, the bottom surface of the vent valve is plane.
Further, each described stable chute is in circular ring shape on the circumferencial direction of the swing arm sleeve.
Further, the diversion groove is on the end face of the swing arm sleeve from the inner surface side of the swing arm sleeve
It is extended continuously in the shape of a spiral to the outer surface side of the swing arm sleeve.
Further, the diversion groove is on the end face of the swing arm sleeve along the radial direction of the swing arm sleeve
Outer surface side from the inner surface side of the swing arm sleeve to the swing arm sleeve extends straight.
Further, the first gasket, the first gasket set are equipped between the end face of the swing arm sleeve and the rocking handle
It is located on the rocker arm shaft and is folded between the end face of the swing arm sleeve and the rocking handle.
Further, one end of the vent valve linking arm and the rocker arm axis connection, the vent valve linking arm it is another
One end is connected on the connection pin shaft.
Further, the second gasket, the second gasket set are equipped between the fixinig plate and the vent valve linking arm
It is located on the connection pin shaft and is folded between the fixinig plate and the vent valve linking arm.
The present invention also provides a kind of turbocharger, have exhaust gas bypass device, and the exhaust gas bypass device is this hair
Any one exhaust gas bypass device of bright offer.
In conclusion stable chute is arranged by the inner surface in swing arm sleeve in the present invention, reduces into rocker arm shaft and shake
The speed of the air-flow in gap, then reduces the active force between air-flow and rocker arm shaft and rocking handle, reduces and shake between arm axle set
Abnormal sound and vibration between arm axle and swing arm sleeve and rocking handle and swing arm sleeve.By the setting of diversion groove, the first gasket,
Further reduce the collision between the end face of swing arm sleeve and rocking handle.In addition, the present invention by anti-rotational limited post with
And second gasket setting, the collision between vent valve and vent valve linking arm can be reduced, reduce vent valve and vent valve
Abnormal sound and vibration between linking arm.Therefore, exhaust gas bypass device provided by the invention can be discharged useless in exhaust gas bypass device
The abnormal sound and vibration that exhaust gas bypass device occurs are reduced during gas, improve the performance of engine and the comfort of automobile.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of exhaust gas bypass device in the prior art.
Fig. 2 is the decomposition texture schematic diagram of exhaust gas bypass device provided by the invention.
Fig. 3 is the assembly structure diagram of exhaust gas bypass device provided by the invention.
Fig. 4 is the schematic top plan view of exhaust gas bypass device shown in Fig. 3.
Fig. 5 is exhaust gas bypass device provided by the invention loaded on the structural schematic diagram in turbocharger.
Fig. 6 is the schematic cross-section in the direction VI-VI in Fig. 4.
Fig. 7 is the structural schematic diagram of swing arm sleeve in Fig. 2.
Fig. 8 is the structural schematic diagram of swing arm sleeve end face in Fig. 2.
Fig. 9 is the schematic cross-section in the direction IX-IX in Fig. 7.
Figure 10 is the structural schematic diagram of the first gasket in Fig. 2.
Figure 11 is the schematic cross-section in the direction XI-XI in Fig. 4.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, it is as follows that the present invention is described in detail.
Fig. 2 is the decomposition texture schematic diagram of exhaust gas bypass device provided by the invention, and Fig. 3 is by exhaust gas provided by the invention
The assembly structure diagram of exchange device, Fig. 4 are the schematic top plan view of exhaust gas bypass device shown in Fig. 3, and Fig. 5 is provided by the invention
Exhaust gas bypass device is as shown in Figures 2 to 5 loaded on the structural schematic diagram in turbocharger, exhaust gas bypass dress provided by the invention
It sets for turbocharger comprising swing arm sleeve 20, Rocker arm assembly 30, vent valve 40 and vent valve linking arm 50.Rocker arm
Axle sleeve 20 is fixed on the shell 60 of turbocharger by interference fit, and the shell 60 of turbocharger is equipped with perforation (figure
Do not show), swing arm sleeve 20 is pressed into the perforation, to be interference fitted with shell 60.Rocker arm assembly 30 is including rocker arm shaft 31 and admittedly
Due to the rocking handle 32 of 31 one end of rocker arm shaft, rocking handle 32 is equipped with fixation hole 321, and rocker arm shaft 31 should close to the insertion of one end of rocking handle 32
After in fixation hole 321, rocker arm shaft 31 and rocking handle 32 are fixed together by welding or interference fit.Rocking handle 32 and actuator
Distance rod (not shown) is connected.Rocker arm shaft 31 is arranged in swing arm sleeve 20, and rocker arm shaft 31 can rotate in swing arm sleeve 20.
The length of rocker arm shaft 31 is greater than the length of swing arm sleeve 20, and rocker arm shaft 31 reveals after passing through swing arm sleeve 20 far from one end of rocking handle 32
Out, and by vent valve linking arm 50 it is connected with vent valve 40, i.e. the bared end that is connected to rocker arm shaft 31 of vent valve linking arm 50
Between vent valve 40, one is fixed on by welding or interference fit between vent valve linking arm 50 and the bared end of rocker arm shaft 31
It rises, in this way, rocking handle 32 and vent valve linking arm 50 are connected to the both ends of rocker arm shaft 31.
Vent valve 40 is set to the exhaust ports (not shown) on the shell 60 of turbocharger.The middle part of vent valve 40 is upward
Equipped with connection pin shaft 41, one end of vent valve linking arm 50 connect with the bared end of rocker arm shaft 31, vent valve linking arm 50 it is another
One end is connected on connection pin shaft 41.Specifically, vent valve linking arm 50 is equipped with connecting hole 51 close to one end of vent valve 40, even
After outbound axis 41 protrudes into connecting hole 51, by 42 riveting of a fixinig plate on connection pin shaft 41, vent valve is connected by fixinig plate 42
The one end for connecing arm 50 is fixed between fixinig plate 42 and vent valve 40.
When turbocharger needs that exhaust gas is discharged, the distance rod of actuator pushes rocking handle 32, drives rocker arm by rocking handle 32
Axis 31 rotates in swing arm sleeve 20, while rocker arm shaft 31 drives vent valve 40 mobile by vent valve linking arm 50, then makes
The vent valve 40 being originally pressed together on exhaust outlet leaves exhaust outlet, realizes the unlatching of exhaust gas bypass device and the discharge of exhaust gas.
Fig. 6 is the schematic cross-section in the direction VI-VI in Fig. 4, and Fig. 7 is the structural schematic diagram of swing arm sleeve in Fig. 2, and Fig. 8 is
The structural schematic diagram of swing arm sleeve end face in Fig. 2, Fig. 9 are the schematic cross-section in the direction IX-IX in Fig. 7, as shown in Figures 6 to 9,
Circumferencial direction on the inner surface of swing arm sleeve 20 along swing arm sleeve 20 is formed with multiple stable chutes 21 in circular ring shape, these
The stable chute 21 of circular ring shape is distributed on the inner surface of swing arm sleeve 20 spaced reciprocally along the axial direction of swing arm sleeve 20.At this
In embodiment, when air-flow enters swing arm sleeve 20 from the gap between rocker arm shaft 31 and swing arm sleeve 20, due in rocker arm shaft
The inner surface of set 20 is provided with stable chute 21, and air-flow can diffuse into stable chute 21, forms air-flow current stabilization, reduces air-flow stream
Dynamic speed, and the setting of stable chute 21 can also make fraction form counter motion, reduce the outside uniaxial pressure of gas,
It reduces exhaust gas and passes through caused 31 axial movement value of rocker arm shaft when swing arm sleeve 20, so as to avoid the axial movement of rocker arm shaft 31
Collision is generated between the end face of swing arm sleeve 20, reduces abnormal sound and the vibration of exhaust gas bypass device.
For the active force being further reduced between air-flow and rocker arm shaft 31 and rocking handle 32, as shown in FIG. 6 and 7, in rocker arm
Axle sleeve 20 is also formed with diversion groove 22, inner surface of the diversion groove 22 from swing arm sleeve 20 on the end face of 32 side of rocking handle
Side extends to the outer surface side of swing arm sleeve 20, i.e. one end of diversion groove 22 is connected to the inner surface of swing arm sleeve 20,
The other end is connected to the outer surface of swing arm sleeve 20.When there is the air-flow of part to overflow between rocker arm shaft 31 and swing arm sleeve 20
Afterwards, it while gas is axially outwardly spread, can be first diffused from the end face of swing arm sleeve 20 along diversion groove 22,
Axial exhaust gas pressure is also reduced to a certain extent, is reduced exhaust gas to the axial impact of rocker arm shaft 31, is further avoided and shake
Collision between the axial movement of arm axle 31 and the end face of swing arm sleeve 20, further reduce exhaust gas bypass device abnormal sound and
Vibration.In the present embodiment, diversion groove 22 is on the end face of swing arm sleeve 20 from the inner surface side of swing arm sleeve 20 to shaking
The outer surface side of arm axle set 20 is extended continuously in the shape of a spiral.In other embodiments, diversion groove 22 is in swing arm sleeve 20
It is also possible on end face along the radial from the inner surface side of swing arm sleeve 20 to the appearance of swing arm sleeve 20 of swing arm sleeve 20
Face side extends straight, moreover, the diversion groove 22 being arranged on the end face of swing arm sleeve 20 at this time can be multiple.
Figure 10 is the structural schematic diagram of the first gasket in Fig. 2, as shown in Fig. 5 and Figure 10, in order to be further reduced rocking handle 32
Collision between the end face of swing arm sleeve 20 is equipped with the first gasket 71 between the end face and rocking handle 32 of swing arm sleeve 20, the
One gasket 71 is set on rocker arm shaft 31 and is folded between the end face of swing arm sleeve 20 and rocking handle 32.When rocker arm shaft 31 is arranged in
When on swing arm sleeve 20, the first gasket 71 is in impaction state.When rocker arm shaft 31 and rocking handle 32 by air-flow pushing away to outside volute
When motive force of the distance rod of power or actuator into volute, the first gasket 71 can reduce rocking handle 32 and swing arm sleeve 20 it
Between collide, reduce exhaust gas bypass mechanism abnormal sound and vibration.
Figure 11 is the schematic cross-section in the direction XI-XI in Fig. 4, as shown in figure 11, on the outer peripheral edge position of vent valve 40
Two anti-rotational limited posts 43 are additionally provided with, connection pin shaft 41 is located between two anti-rotational limited posts 43, two anti-rotational limits
Column 43 is located at the two sides of vent valve linking arm 50.Go out when air-flow from exhaust outlet causes to deflate because of the fluctuation of pressure at expulsion
When valve 40 rotates, due to the position-limiting action between two anti-rotational limited posts 43 and vent valve linking arm 50, anti-rotational limited post
43 can prevent vent valve 40 from rotating in any direction, so as to avoid vent valve 40 due to the pedestal of rotopeening volute
The abnormal sound of generation.
In order to prevent vent valve linking arm 50 and connection pin shaft 41 and fixinig plate 42 between collision, fixinig plate 42 with put
The second gasket 72 is additionally provided between air valve linking arm 50, the second gasket 72 is set on connection pin shaft 41 and is folded in fixinig plate 42
Between vent valve linking arm 50.When vent valve linking arm 50 is fixed between fixinig plate 42 and vent valve 40 by fixinig plate 42
When, the second gasket 72 is in impaction state.When air-flow pushes vent valve 40 to be axially moved along connection pin shaft 41, the second gasket 72
The active force between vent valve linking arm 50 and vent valve 40 can be buffered, is reduced between vent valve 40 and vent valve linking arm 50
Collision, reduce exhaust gas bypass mechanism abnormal sound and vibration.
When the work of exhaust gas bypass device, actuator distance rod drives rocking handle 32 to rotate around 31 axis of rocker arm shaft, then makes
Vent valve 40 leaves exhaust outlet, and air-flow is flowed out from exhaust outlet, and a part of air-flow can be along between rocker arm shaft 31 and swing arm sleeve 20
Gap outflow because swing arm sleeve 20 in be equipped with stable chute 21, the speed into the air-flow in above-mentioned gap can be in current stabilization
It is gradually decreased under the action of slot 21, so just reduces the active force between air-flow and rocker arm shaft 31 and rocking handle 32, reduce and shake
Abnormal sound and vibration between arm axle 31 and rocking handle 32 and swing arm sleeve 20.When air-flow is flowed out from swing arm sleeve 20, from rocker arm shaft
Diversion groove 22 between the end face and rocking handle 32 of set 20 guides outflow, again reduces the effect between air-flow and rocking handle 32
Power.The setting of first gasket 71 can prevent to collide between the end face of rocking handle 32 and swing arm sleeve 20.When air-flow promotion is put
When air valve 40 rotates, anti-rotational limited post 43 will be limited with vent valve linking arm 50 and be contacted, and then prevent vent valve 40
Continue to rotate.When gas push vent valve 40 is axially moved along connection pin shaft 41, the second gasket 72 can prevent vent valve 40
It collides between vent valve linking arm 50, reduces the abnormal sound between vent valve 40 and vent valve linking arm 50 and vibration.
Therefore, exhaust gas bypass device provided by the invention can reduce exhaust gas bypass dress during exhaust gas is discharged in exhaust gas bypass device
Abnormal sound and the vibration for setting generation improve the performance of engine and the comfort of automobile.
The present invention also provides a kind of turbocharger, including exhaust gas bypass device as described above.About the turbocharging
The other structures of device may refer to the structure of existing turbocharger, and details are not described herein.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention
Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.