CN102733931B - Turbocharger for internal combustion engine - Google Patents
Turbocharger for internal combustion engine Download PDFInfo
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- CN102733931B CN102733931B CN201210090855.9A CN201210090855A CN102733931B CN 102733931 B CN102733931 B CN 102733931B CN 201210090855 A CN201210090855 A CN 201210090855A CN 102733931 B CN102733931 B CN 102733931B
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- Prior art keywords
- waste gas
- turbine wheel
- tapping hole
- turbine
- row tapping
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/026—Scrolls for radial machines or engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
The invention provides a turbocharger for an internal combustion engine. In a turbine housing (3), a second discharge outlet (2a) of a second discharge turbine pipe (2) is located at the downstream side of a first discharge outlet (1a) of a first discharge turbine pipe (1) along the flow direction of waste gas in a turbine wheel (4). A protective cover wall of the turbine housing (3) covering a protective cover edge (SE) of the turbine wheel (4) comprises an arc protective cover wall (SW1) with an arc cross section and located in a flow direction transition section of the turbine wheel (4), in the flow direction transition section of the turbine wheel (4), the flow direction of the waste gas changes from a radial direction to an axial direction in the turbine wheel (4). The second discharge outlet (2a) is disposed in the arc protective cover wall (SW1).
Description
Technical field
The present invention relates to a kind of turbosupercharger for explosive motor.
Background technique
The concrete example (referring to for example JP2007-23893A or JP2007-23894A) of the turbosupercharger with two discharge scrolls formerly proposing is described with reference to Fig. 9.
The turbosupercharger formerly proposing describing in detail in for example JP2007-23893A or JP2007-23894A comprises the first discharge scroll 101 and the second discharge scroll 102.The first discharge scroll 101 comprises first row tapping hole 101a, and waste gas is positioned at the upstream side part output of upstream side towards the flow direction along waste gas in turbine wheel 104 of turbine wheel 104 by first row tapping hole 101a.The second discharge scroll 102 comprises second row tapping hole 102a, and waste gas is positioned at the part output in the downstream side of first row tapping hole 101a towards the flow direction along waste gas of turbine wheel 104 by second row tapping hole 102a.
The flow direction that outputs to the waste gas of turbine wheel 104 from first row tapping hole 101a becomes axial direction (axial flow) from radial direction (radially inwardly flowing) turbine wheel 104, afterwards, waste gas is in axial direction exported (referring to the dotted arrow α Fig. 9) from turbine wheel 104.
As shown in Figure 9, the downstream side part that second row tapping hole 102a is arranged in downstream side at the flow direction along waste gas in turbine wheel 104 of turbine wheel 104 is offered.
Particularly, second row tapping hole 102a is formed in cylindrical shroud wall SW102 in the downstream side part (covering the shroud edge SE100 of turbine wheel 104 wall surface towards downstream side guiding waste gas) of the guard shield wall (shroud wall) of turbine shroud 103 (with the axial direction of turbine wheel 104 parallel barrel surface substantially).
Therefore, as shown in the solid arrow β in Fig. 9, output to the waste gas of turbine wheel 104 and converge with right angle from the waste gas streams (substantially along the directed stream of the axial direction of turbine wheel 104) of first row tapping hole 101a output from second row tapping hole 102a.
Therefore, output to fierce collision in the waste gas (the dotted arrow α Fig. 9) of turbine wheel 104 and the downstream side part of the waste gas (the solid arrow β Fig. 9) that outputs to turbine wheel 104 from second row tapping hole 102a in turbine wheel 104 from first row tapping hole 101a.Thereby, as shown in the solid arrow γ in Fig. 9, in the waste gas streams in the downstream side part in turbine wheel 104, produce powerful turbulent flow.This turbulent flow can be disturbed the rotation of turbine wheel 104, thereby can reduce turbine efficiency.
JP2007-192125A has instructed a kind of turbosupercharger that overcomes above-mentioned shortcoming.
In the turbosupercharger of JP2007-192125A, the outlet bend (deviator) that the flow direction of waste gas is become to axial direction is arranged on the downstream of second row tapping hole 102a, bumps in the waste gas from first row tapping hole 101a output and the position of converging of converging from the waste gas of second row tapping hole 102a output to limit waste gas.
The technology of JP2007-192125A can and realize the little angle of converging at the waste gas streams from first row tapping hole 101a output between the waste gas streams of second row tapping hole 102a output.But, owing to being provided with outlet bend, therefore waste gas converge the exhaust outlet of position near turbine wheel 104.Therefore, in turbine wheel 104 with from the waste gas of first row tapping hole 101a output, do not have just to export from the waste gas of second row tapping hole 102a output from turbine wheel 104 well-mixed situation.
Thereby, bump in the outlet port of turbine wheel 104 from waste gas streams and the waste gas streams of exporting from second row tapping hole 102a of first row tapping hole 101a output.Therefore, in the waste gas streams in the outlet port of turbine wheel 104, produce large turbulent flow.
The turbulent flow producing in the outlet port of turbine wheel 104 is disturbed the rotation of turbine wheel 104, thereby can reduce turbine efficiency.
Summary of the invention
The present invention has overcome above-mentioned shortcoming.Therefore, the object of the present invention is to provide a kind of turbosupercharger that can be limited in inside and the outlet port turbulization of turbine wheel and can improve turbine efficiency.
According to the present invention, a kind of turbosupercharger for explosive motor is provided, this turbosupercharger comprises turbine shroud and turbine wheel.Described turbine shroud comprises multiple discharge scrolls, and the each waste gas being suitable for from being exported by explosive motor in described multiple discharge scrolls produces eddy flow, and is suitable for the eddy flow of waste gas to be discharged into the inner side of turbine shroud.Described turbine wheel is suitable for by being rotated by the waste gas of described multiple discharge scroll supply.Described turbine wheel is suitable for the waste gas of being supplied along the radial direction of turbine wheel from the radial outside of turbine wheel by described multiple discharge scrolls along the axial direction discharge of turbine wheel.Described multiple discharge scroll comprises the first discharge scroll and the second discharge scroll.Described the first discharge scroll comprises first row tapping hole, and waste gas is positioned at the upstream side part output of upstream side towards the flow direction along waste gas in turbine wheel of turbine wheel by first row tapping hole.Described the second discharge scroll comprises second row tapping hole, and waste gas is positioned at the part output in the downstream side of first row tapping hole towards the flow direction along waste gas of turbine wheel by second row tapping hole.Described turbine shroud comprises the guard shield wall of the shroud edge that covers turbine wheel.Described guard shield wall comprises the arc guard shield wall that flows to changeover portion that has arc section and be arranged in turbine wheel, and flowing in changeover portion of turbine wheel, the flow direction of waste gas becomes axial direction from radial direction in turbine wheel.Second row tapping hole is offered in arc guard shield wall.
Brief description of the drawings
Accompanying drawing described here is only for illustration purposes, is not intended to limit the scope of the invention by any way.
Figure 1A is according to the axial, cross-sectional view of the turbosupercharger of the first embodiment of the present invention;
Figure 1B is the local amplification sectional view of the exhaust gas turbine of the turbosupercharger shown in Figure 1A;
Fig. 2 A is the sectional view intercepting along the IIA-IIA line in Figure 1A;
Fig. 2 B is the sectional view intercepting along the IIB-IIB line in Figure 1A;
Fig. 3 is the schematic sectional view illustrating according to the variable volume valve of the first embodiment's exhaust gas turbine (volume changeable valve) and exhaust gas bypass reduction valve (wastegate valve);
Fig. 4 is the schematic partial section that the exhaust gas turbine of turbosupercharger is according to a second embodiment of the present invention shown;
Fig. 5 is the schematic partial section that the exhaust gas turbine of the turbosupercharger of a third embodiment in accordance with the invention is shown;
Fig. 6 is the schematic partial section that the exhaust gas turbine of the turbosupercharger of a fourth embodiment in accordance with the invention is shown;
Fig. 7 is the schematic partial section that the exhaust gas turbine of turbosupercharger is according to a fifth embodiment of the invention shown;
Fig. 8 is the schematic partial section that the exhaust gas turbine of turbosupercharger is according to a sixth embodiment of the invention shown;
Fig. 9 is the schematic partial section that the exhaust gas turbine of the turbosupercharger formerly proposing is shown.
Embodiment
With reference to the accompanying drawings various embodiments of the present invention are described.
The following examples are provided, so that the present invention to be exemplarily described, and the invention is not restricted to the following examples.
Be discussed below in embodiment's process, in all embodiments, similar assembly is indicated by identical label.
(the first embodiment)
With reference to Fig. 1 to Fig. 3, the first embodiment of the present invention is described.
Turbosupercharger is installed to explosive motor (for example, petrol engine, diesel engine).In addition, the type of motor can be any type (for example, Reciprocating engine, rotary engine).In addition, in this case, turbosupercharger is installed to the driving motor of vehicle.
Turbosupercharger is a kind of utilization from the energy of the waste gas of motor discharge to by the pressurized machine that enters air pressurized being introduced in motor.As shown in Figure 1A, the turbosupercharger of the present embodiment comprises turbine shroud 3, turbine wheel 4, compressor impeller 5, compressor housing 6, axle 7 and bearing support 8.Turbine shroud 3 comprises multiple discharge scrolls, is specially the first discharge scroll 1 and the second discharge scroll 2, and each being suitable in described multiple discharge scrolls produces eddy flow the waste gas of exporting from motor, and exports waste gas eddy flow towards the inner side of turbine shroud 3.The waste gas that turbine wheel 4 is suitable for by being supplied by the first discharge scroll 1 and the second discharge scroll 2 rotates.In the time that turbine wheel 4 rotates, turbine wheel 4 is fed to the waste gas of turbine wheel 4 from the radial outside of turbine wheel 4 by the first discharge scroll 1 and the second discharge scroll 2 along the axial direction output of turbine wheel 4, described axial direction is the direction parallel with the spin axis (and being therefore the spin axis of axle 7) of turbine wheel 4.Compressor impeller 5 rotates by the rotating force of turbine wheel 4, with to entering air pressurized.Compressor housing 6 is configured to spiral-shaped, and holds compressor impeller 5.The rotation of turbine wheel 4 is transmitted to compressor impeller 5 by axle 7.Bearing support 8 is back shaft 7 rotatably, to make the axle 7 can High Rotation Speed.
Turbosupercharger is constructed such that bearing support 8 is in axial direction placed between turbine shroud 3 and compressor housing 6, and bearing support 8, turbine shroud 3 and compressor housing 6 are combined together such as V-belt, snap ring and/or stud bolt by fixed block (fixing device).
The discharge scroll of turbine shroud 3 comprises the first discharge scroll 1 and the second discharge scroll 2.The first discharge scroll 1 comprises first row tapping hole 1a.The upstream side part that the flow direction along turbine wheel 4 waste gas of waste gas from first row tapping hole 1a towards turbine wheel 4 is positioned at upstream side is blown, that is, and and output.The second discharge scroll 2 comprises second row tapping hole 2a.The part that along the waste gas flow direction turbine wheel 4 of waste gas from second row tapping hole 2a towards turbine wheel 4 is positioned at the downstream side of first row tapping hole 1a is blown, that is, and and output.
Turbine wheel 4 comprises hub 4a and multiple blade 4b.Hub 4a is connected to axle 7.Blade 4b extends radially outwardly from hub 4a, and arranges one by one along circumferential direction.
The outmost edge that is radially positioned at of each blade 4b is called as leading edge RE, and the downstream side axial edge that the flow direction along waste gas of blade 4b is positioned at downstream side is called as trailing edge TE.The peripheral edge between leading edge RE and trailing edge TE of blade 4b is called as shroud edge SE.
The part of the covering shroud edge SE of the inwall of turbine shroud 3 is called as guard shield wall SW.
Guard shield wall SW is configured to have the tubular wall of horn mouth shape, so that the waste gas in the gap being fed between two adjacent blade 4b is directed to trailing edge TE.Guard shield wall SW is configured to have the arc guard shield wall SW1 and the cylindrical shroud wall SW2 that link together.
Arc guard shield wall SW1 be cover turbine blade 4b flow to the changeover portion wall surface of (arcuate segment of shroud edge SE will be called as curved edge hereinafter), flowing to changeover portion place, the flow direction of waste gas becomes axial direction from radial direction.The cross section of arc guard shield wall SW1 has the arcuate shape consistent with the shape of curved edge.
Cylindrical shroud wall SW2 is the wall surface that covers turbine blade 4b along the flow direction of waste gas in the downstream side of arc guard shield wall SW1.Cylindrical shroud wall SW2 is configured to and axial direction parallel cylinder form substantially.
The first row tapping hole 1a of the first discharge scroll 1 is annular exit, and waste gas is exported towards leading edge RE from the radial outside of turbine blade 4b by first row tapping hole 1a.The runner (opening part) towards leading edge RE guiding waste gas of first row tapping hole 1a along with axial direction substantially vertical direction extend, as shown in Figure 1B.
As shown in FIG. 1A and 1B, the second row tapping hole 2a of the second discharge scroll 2 locates to offer at arc guard shield wall SW1 (curved bending section in the cross section of guard shield wall SW).
Particularly, second row tapping hole 2a is annular exit, and waste gas is exported towards curved edge (flow direction of waste gas becomes the section of axial direction from radial direction at blade 4b) from the radial outside of turbine blade 4b by second row tapping hole 2a.The runner (opening part) towards curved edge guiding waste gas of second row tapping hole 2a extends along the direction tilting with respect to axial direction, as shown in Figure 1B.In this case, second row tapping hole 2a tilts with respect to axial direction, thereby limits arc angle between the axis of second row tapping hole 2a and the axial direction of turbine wheel 4.
Isolated partition wall 10 at the first discharge scroll 1 and the second discharge scroll 2 is arranged in the inside of turbine shroud 3.
As shown in Figure 3, partition wall 10 extends to the exhaust gas entrance 3a (region of the close part that is connected to discharge manifold) of turbine shroud 3.The upstream side part that the flow direction along waste gas of the first discharge scroll 1 is positioned at upstream side is communicated with exhaust gas entrance 3a all the time.
As shown in Figure 3, the part that the flow direction along waste gas of discharge passage is positioned at the upstream side of the first discharge scroll 1 is limited by partition wall 10, thereby has the section area successively decreasing reducing towards downstream side.
Transfiguration intercommunicating pore 11 is formed in the part of this restriction portion of formation (choked section) of partition wall 10, to be communicated with between the first discharge scroll 1 and the second discharge scroll 2.Transfiguration intercommunicating pore 11 is opened or closed by variable volume valve 9.
Control unit of engine (ECU) is carried out opening/closing control operation and the aperture control operation of variable volume valve 9 by electric actuator (not shown).In the time controlling the aperture of transfiguration intercommunicating pore 11 by variable volume valve 9, the amount of waste gas that is directed to turbine blade 4b from the second discharge scroll 2 is controlled.
As shown in Figure 3, exhaust gas bypass intercommunicating pore 13 is formed in the outer wall of the second discharge scroll 2, so that by walking around turbine blade 4b, towards downstream side, (silencing apparatus one side) guides a part of waste gas.Exhaust gas bypass intercommunicating pore 13 is opened or closed by exhaust gas by-pass valve 12.
ECU carries out opening/closing control operation and the aperture control operation of exhaust gas by-pass valve 12 by electric actuator (not shown).In the time controlling the aperture of exhaust gas bypass intercommunicating pore 13 by exhaust gas by-pass valve 12, the amount of waste gas of walking around turbine blade 4b is controlled.
For example, driving motor in the situation that with the slow-speed of revolution, ECU close variable volume valve 9 and exhaust gas by-pass valve 12 both, make all waste gas all only through the first discharge scroll 1.Secondly, increase so that the flow increase of waste gas, ECU controls the aperture of variable volume valve 9 at the rotating speed of motor, make all waste gas through the first discharge scroll 1 and the second discharge scroll 2.Further increase so that the flow increase of waste gas, ECU opens exhaust gas by-pass valve 12, to control the flow of the waste gas of walking around turbine blade 4b at the rotating speed of motor.
In the time that the operating mode based on motor is controlled the aperture of variable volume valve 9 and the aperture of exhaust gas by-pass valve 12 in the above described manner, can suitably control the pressure of waste gas and the boost pressure of turbosupercharger, thereby can improve the fuel consumption of motor.
Now, will the first embodiment's advantage be described.
First row tapping hole 1a is arranged on the position near the leading edge RE of turbine blade 4b, thereby is directed into the leading edge RE of turbine blade 4b from the waste gas of first row tapping hole 1a output.
By contrast, second row tapping hole 2a is formed in arc guard shield wall SW1.Therefore,, in the time opening variable volume valve 9, be directed into the curved edge of the shroud edge SE of blade 4b from the waste gas of second row tapping hole 2a output.
As shown in Figure 1B, in the time that second row tapping hole 2a is formed in arc guard shield wall SW1, can make to diminish from the waste gas of first row tapping hole 1a output and from the angle (intersection angle) of converging between the waste gas of second row tapping hole 2a output.Therefore, can be limited or minimize by the waste gas from first row tapping hole 1a output and from the generation of the caused turbulent flow of collision between the waste gas of second row tapping hole 2a output.Like this, can be limited in the inside of turbine wheel 4 and produce waste gas turbulent flow, or can make the generation of waste gas turbulent flow in the inside of turbine wheel 4 minimize.
In addition, be arranged in from the waste gas of first row tapping hole 1a output and the position of converging merging together from the waste gas of second row tapping hole 2a output the upstream side part that flows to changeover portion (flow direction of waste gas becomes the section of axial direction at turbine wheel 4 from radial direction).Therefore, the waste gas converging is adjusted in the inside of turbine wheel 4 by flowing to changeover portion, afterwards, the waste gas from turbine wheel 4 outputs are adjusted.Therefore, limited in the outlet port of turbine wheel 4 and produced waste gas turbulent flow.
As mentioned above, the first embodiment's turbosupercharger can be limited in the inside of turbine wheel 4 and the outlet place turbulization of turbine wheel 4.Therefore,, compared with the technology formerly proposing, can improve turbine efficiency (turbine efficiency under the state being opened in variable volume valve 9 particularly).
In addition,, because turbine efficiency is enhanced, therefore, can improve moment of torsion by the boost pressure that increases turbosupercharger.The improvement of the improvement of fuel consumption and turbo lag (turbo lag) has realized the raising of vehicle drive performance.
(the second embodiment)
With reference to Fig. 4, the second embodiment of the present invention is described.In the following embodiments, the assembly similar with the assembly of discussing in the first embodiment will be indicated by identical label.
In a second embodiment, be arranged in the downstream side part (the right side part of the inwall of the second row tapping hole 2a of Fig. 4) in downstream side with the axial direction flow direction along waste gas in turbine wheel 4 that the vertical vertical wall 21 in downstream side is formed on the inwall of second row tapping hole 2a substantially.The vertical wall 21 in downstream side preferably extends along circumferential direction around whole turbine shroud 3.But, the invention is not restricted to this, therefore, the vertical wall 21 in downstream side can only partly extend in circumferential direction along turbine shroud 3.
Owing to being provided with the vertical wall 21 in downstream side, therefore, can further reduce in turbine wheel 4 from the waste gas of first row tapping hole 1a output and from the angle of converging between the waste gas of second row tapping hole 2a output.Like this, can further limit or minimize the caused waste gas turbulent flow of the collision in the inside of turbine wheel 4 by waste gas, and therefore can further improve turbine efficiency.
In addition, though in the case of from the waste gas streams of second row tapping hole 2a output due to from the waste gas streams of first row tapping hole 1a output and bending, the vertical wall 21 in downstream side also can limit from the flow of the waste gas of second row tapping hole 2a output and reduce.
Therefore, can increase from the flow of the waste gas of second row tapping hole 2a output, thereby can improve turbine output.In addition,, owing to can limiting the generation of waste gas turbulent flow, therefore can improve turbine efficiency.
(the 3rd embodiment)
With reference to Fig. 5, the third embodiment of the present invention is described.
In the 3rd embodiment, be arranged in the upstream side part (left part of the inwall of the second row tapping hole 2a of Fig. 5) of upstream side with the axial direction flow direction along waste gas in turbine wheel 4 that the vertical vertical wall 22 of upstream side is formed on the inwall of second row tapping hole 2a substantially.The vertical wall 22 of upstream side preferably extends along circumferential direction around whole turbine shroud 3.But, the invention is not restricted to this, therefore, the vertical wall 22 of upstream side can only partly extend in circumferential direction along turbine shroud 3.
Particularly, in the 3rd embodiment, the vertical wall 21 in downstream side and the vertical wall 22 of upstream side are all arranged on second row tapping hole 2a place.
Owing to being provided with the vertical wall 22 of upstream side, therefore, can further reduce in turbine wheel 4 from the waste gas of first row tapping hole 1a output and from the angle of converging between the waste gas of second row tapping hole 2a output.Like this, can further limit or minimize the caused waste gas turbulent flow of collision by waste gas, and can further improve turbine efficiency.
In addition can limit because the separation of the waste gas of exporting from first row tapping hole 1a causes producing eddy flow the inside of second row tapping hole 2a.
Therefore, can limit due to eddy flow the waste gas streams generation from second row tapping hole 2a output is disturbed, and therefore can further improve turbine efficiency.
(the 4th embodiment)
With reference to Fig. 6, the fourth embodiment of the present invention is described.
In the 4th embodiment, the downstream side part (right part of Fig. 6) that the flow direction along waste gas in turbine wheel 4 that R part 23 (arc turning is connected to guard shield wall SW and has arc section, makes guard shield wall SW tangentially contact the segmental arc of the arc section at arc turning) is formed in the open end of second row tapping hole 2a is arranged in downstream side is connected smoothly with guard shield wall SW.R part 23 is preferably extended along circumferential direction around whole turbine shroud 3.But, the invention is not restricted to this, therefore, R part 23 can only partly be extended in circumferential direction along turbine shroud 3.
Owing to being provided with R part (arc turning) 23, therefore, can flow reposefully along guard shield wall SW from the waste gas of second row tapping hole 2a output.Particularly, can limit from the waste gas streams of second row tapping hole 2a output and separate with guard shield wall SW.
Therefore, can be limited in from the waste gas of first row tapping hole 1a output and the waste gas streams turbulization of converging position of converging merging together from the waste gas of second row tapping hole 2a output, and therefore can improve turbine efficiency.
(the 5th embodiment)
With reference to Fig. 7, the fifth embodiment of the present invention is described.
The 5th embodiment is the second embodiment and the 4th embodiment's combination.
Particularly, in the 5th embodiment, the vertical wall 21 in downstream side is formed on second row tapping hole 2a place, and R part (arc turning) 23 is formed on the attachment portion (turning) that vertical downstream side wall 21 is connected to guard shield wall SW and locates.
Like this, can realize the second embodiment's advantage and the 4th embodiment's advantage simultaneously.Particularly, can further be limited in from the waste gas of first row tapping hole 1a output and the waste gas turbulization of converging position of converging merging together from the waste gas of second row tapping hole 2a output.Therefore, can further improve turbine efficiency.
(the 6th embodiment)
With reference to Fig. 8, the sixth embodiment of the present invention is described.
In the 6th embodiment, the present invention is applied to the tilting turbine that leading edge RE tilts with respect to axial direction.
Here, be described with reference to Fig. 8, in Fig. 8, the 4th embodiment is bonded in tilting turbine (the downstream side part that the flow direction along waste gas in turbine wheel 4 that R part 23 is formed on the open end of second row tapping hole 2a is arranged in downstream side).But, the invention is not restricted to this combination., any embodiment in above-described embodiment all can be combined with tilting turbine.
In the situation that tilting turbine is combined, can further reduce the angle of converging between first row tapping hole 1a and second row tapping hole 2a in the present invention, and therefore can further improve the turbine efficiency of tilting turbine.
Those skilled in the art will easily expect other advantages and modification.Therefore, in a broad aspect, the invention is not restricted to the detail, typical equipments and the illustrated examples that illustrate and describe.
Claims (4)
1. for a turbosupercharger for explosive motor, comprising:
Turbine shroud (3), comprise multiple discharge scrolls (1,2), described multiple discharge scrolls (1,2) the each waste gas being suitable for from being exported by explosive motor in produces eddy flow, and is suitable for the eddy flow of waste gas to be discharged into the inner side of turbine shroud (3);
Turbine wheel (4), be suitable for by by described multiple discharge scrolls (1,2) waste gas of supply rotation, wherein, described turbine wheel (4) is suitable for discharging by described multiple discharge scrolls (1 along the axial direction of turbine wheel (4), 2) waste gas of supplying along the radial direction of turbine wheel (4) from the radial outside of turbine wheel (4), wherein:
Described multiple discharge scrolls (1,2) comprising:
The first discharge scroll (1), comprise first row tapping hole (1a), waste gas is radially positioned at the upstream side part output of upstream side towards the flow direction along the middle waste gas of turbine wheel (4) of turbine wheel (4) by first row tapping hole (1a);
The second discharge scroll (2), comprise second row tapping hole (2a), waste gas is positioned at the part output in the downstream side of first row tapping hole (1a) towards the flow direction along waste gas of turbine wheel (4) by second row tapping hole (2a)
Described turbine shroud (3) comprises the guard shield wall (SW) of the shroud edge (SE) that covers turbine wheel (4),
Described guard shield wall (SW) comprises the arc guard shield wall (SW1) that has arc section and arrange along the curved edge that flows to changeover portion that forms turbine wheel (4), flowing in changeover portion of turbine wheel (4), the flow direction of waste gas becomes axial direction from radial direction in turbine wheel (4)
Second row tapping hole (2a) is offered in arc guard shield wall (SW1), and towards curved edge with respect to axioversion, with against curved edge discharging waste gas.
2. turbosupercharger according to claim 1, it is characterized in that, with axial direction substantially the vertical vertical wall in downstream side (21) be formed on the downstream side part that is arranged in the inwall of the second row tapping hole (2a) in downstream side along the flow direction of waste gas in turbine wheel (4).
3. turbosupercharger according to claim 1 and 2, it is characterized in that, with axial direction substantially the vertical vertical wall of upstream side (22) be formed on the upstream side part that is arranged in the inwall of the second row tapping hole (2a) of upstream side along the flow direction of waste gas in turbine wheel (4).
4. turbosupercharger according to claim 1 and 2, it is characterized in that, the arc turning (23) being connected smoothly with guard shield wall (SW) is formed on the downstream side part that is arranged in the open end of the second row tapping hole (2a) in downstream side along the flow direction of the middle waste gas of turbine wheel (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011078610A JP5353938B2 (en) | 2011-03-31 | 2011-03-31 | Turbocharger |
| JP078610/2011 | 2011-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102733931A CN102733931A (en) | 2012-10-17 |
| CN102733931B true CN102733931B (en) | 2014-11-05 |
Family
ID=46845316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210090855.9A Expired - Fee Related CN102733931B (en) | 2011-03-31 | 2012-03-30 | Turbocharger for internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5353938B2 (en) |
| CN (1) | CN102733931B (en) |
| DE (1) | DE102012205198B4 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201322206D0 (en) | 2013-12-16 | 2014-01-29 | Cummins Ltd | Turbine housing |
| US9810143B2 (en) * | 2015-01-16 | 2017-11-07 | Ford Global Technologies, Llc | Exhaust control valve branch communication and wastegate |
| JPWO2018155532A1 (en) * | 2017-02-22 | 2019-11-07 | 株式会社Ｉｈｉ | Turbocharger |
| WO2022029876A1 (en) * | 2020-08-04 | 2022-02-10 | 三菱重工エンジン＆ターボチャージャ株式会社 | Turbine and turbocharger |
| WO2024095525A1 (en) * | 2022-11-02 | 2024-05-10 | 株式会社Ihi | Turbine |
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| JP2003035152A (en) * | 2001-07-25 | 2003-02-07 | Daido Steel Co Ltd | Turbocharger housing and manufacturing method for the same |
| DE10318737A1 (en) * | 2003-04-25 | 2004-11-25 | Daimlerchrysler Ag | Exhaust gas turbocharger has two part turbine housing with first and second channels, whereby first channel contains control grid with individually adjustable guide vanes, second has no vanes |
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| JP2007023894A (en) | 2005-07-15 | 2007-02-01 | Toyota Motor Corp | Turbocharger |
| JP2007023893A (en) * | 2005-07-15 | 2007-02-01 | Toyota Motor Corp | Turbocharger |
| JP2007192125A (en) * | 2006-01-19 | 2007-08-02 | Toyota Motor Corp | Turbocharger |
| JP2009281197A (en) * | 2008-05-20 | 2009-12-03 | Mitsubishi Heavy Ind Ltd | Mixed flow turbine |
| JP2010013972A (en) * | 2008-07-02 | 2010-01-21 | Toyota Motor Corp | Variable capacity type turbocharger |
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2011
- 2011-03-31 JP JP2011078610A patent/JP5353938B2/en not_active Expired - Fee Related
-
2012
- 2012-03-30 DE DE102012205198.8A patent/DE102012205198B4/en not_active Expired - Fee Related
- 2012-03-30 CN CN201210090855.9A patent/CN102733931B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1508411A (en) * | 2002-12-13 | 2004-06-30 | 吴雄良 | Apparatus for controlling alternating drive of two power sources to vortex compressor and control method thereof |
| CN101368488A (en) * | 2007-08-06 | 2009-02-18 | 霍尼韦尔国际公司 | Variable-geometry turbocharger with asymmetric divided volute for engine exhaust gas pulse optimization |
Non-Patent Citations (2)
| Title |
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| JP特开2007-192125A 2007.08.02 * |
| JP特开2010-13972A 2010.01.21 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5353938B2 (en) | 2013-11-27 |
| JP2012211572A (en) | 2012-11-01 |
| DE102012205198B4 (en) | 2020-06-18 |
| DE102012205198A1 (en) | 2012-10-04 |
| CN102733931A (en) | 2012-10-17 |
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