CN210239847U - Exhaust gas turbocharger, engine and vehicle - Google Patents
Exhaust gas turbocharger, engine and vehicle Download PDFInfo
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- CN210239847U CN210239847U CN201921320534.7U CN201921320534U CN210239847U CN 210239847 U CN210239847 U CN 210239847U CN 201921320534 U CN201921320534 U CN 201921320534U CN 210239847 U CN210239847 U CN 210239847U
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- 239000003921 oil Substances 0.000 claims abstract description 34
- 239000010687 lubricating oil Substances 0.000 claims abstract description 21
- 239000012212 insulator Substances 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 abstract description 52
- 239000002912 waste gas Substances 0.000 abstract description 20
- 230000009286 beneficial effect Effects 0.000 description 7
- 238000009413 insulation Methods 0.000 description 5
- 238000004939 coking Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000010705 motor oil Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model provides an exhaust gas turbocharger, engine and vehicle, exhaust gas turbocharger includes the turbine, midbody and compressor, the turbine includes the turbine shell and locates the turbine in the turbine shell, the compressor includes compressor housing and locates the impeller in the compressor housing, the midbody includes the midbody and locates the pivot in the midbody shell, the impeller is connected to the one end of pivot, the turbine is connected to the other end, and the pivot passes through the bearing and rotates and set up in the midbody shell, be equipped with the time oil return chamber that is used for holding lubricating oil in the midbody shell, the midbody shell is equipped with the pressure chamber, the pressure chamber is located between time oil return chamber and the turbine, the pressure chamber is connected with the turbocharging system, turboc. This scheme turbocharging system is to the pressure chamber pressure boost, and the high temperature waste gas in the turbine shell gets into the resistance grow of pressure chamber like this to prevent high temperature waste gas to get into the pressure chamber, effectively guarantee that the temperature in the middle shell maintains in the operating temperature scope of lubricating oil, improve exhaust gas turbocharger's security and reliability.
Description
Technical Field
The utility model relates to a turbocharging technical field particularly, relates to an exhaust gas turbocharger, an engine and a vehicle.
Background
The most cost-effective way to increase the power of the engine is currently to use inlet air supercharging, i.e. to use a turbocharger. The principle of the turbocharger is that heat energy of an engine is converted into rotary mechanical energy through a turbine and a compressor impeller which are coaxially connected, so that the power of the engine is improved by improving the air inlet pressure of the engine. The exhaust gas turbocharger mainly comprises an intermediate body, a turbine, a compressor and the like. The exhaust gas discharged by the engine is introduced into the turbine, and the energy of the exhaust gas is utilized to drive the turbine to rotate, so that the compressor coaxial with the turbine is driven to realize supercharging.
The core parts of the intermediate body are a rotating shaft which is connected with a turbine and a compressor impeller and rotates at a high speed and a bearing which plays a supporting role, and lubricating oil which plays a cooling and lubricating role needs to be provided for the bearing in order to prolong the service life of the bearing. The temperature of the waste gas of a general turbine is 300-700 ℃, the working temperature of the lubricating oil is required to be below 130 ℃, the high-temperature waste gas at the turbine end easily flows to an intermediate body, so that the temperature of the lubricating oil is increased, the lubricating oil at a floating bearing of a supercharger can be coked when the temperature of the lubricating oil is serious, and the engine oil of an engine can be aged when the temperature is serious, so that the seizure fault is generated.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving at least one of the technical problem that exists among prior art or the correlation technique
To this end, an object of the present invention is to provide an exhaust gas turbocharger.
Another object of the present invention is to provide an engine.
It is yet another object of the present invention to provide a vehicle.
The utility model discloses an exhaust gas turbocharger is proposed in the technical scheme of first aspect, including turbine, midbody and compressor, the turbine includes the turbine shell and locates turbine in the turbine shell, the compressor includes the compressor casing and locates impeller in the compressor casing, the midbody includes the midbody and locates pivot in the midbody shell, the one end of pivot is connected impeller, the other end are connected the turbine, just the pivot pass through the bearing rotate set up in the midbody shell, be equipped with the time oil return chamber that is used for holding lubricating oil in the midbody shell, the midbody shell is equipped with the pressure chamber, the pressure chamber is located time oil return chamber with between the turbine, the pressure chamber is connected with supercharging system, supercharging system configuration is right the pressure chamber pressure boost.
The utility model discloses above-mentioned embodiment provides an exhaust gas turbocharger, set up the pressure chamber between returning oil chamber and turbine, turbocharging system makes pressure chamber pressure grow to the pressure chamber pressure boost, thus, the resistance grow of shell in the middle of the high temperature waste gas that is located the turbine shell gets into, thereby make the unable middle shell that gets into of high temperature waste gas, and simultaneously, the pressure chamber is established between returning oil chamber and turbine, make back oil chamber and turbine interval distribution, effectively block the heat transfer between oil chamber and the turbine, the temperature in the shell is maintained in the working temperature range of lubricating oil in the middle of the assurance, avoid lubricating oil operating temperature to rise and lead to bearing department lubricating oil coking, improve exhaust gas turbocharger's security and reliability.
In addition, according to the exhaust gas turbocharger of the above embodiment of the present invention, the following additional technical features may also be provided:
in the above technical solution, the exhaust gas turbocharger further includes: a thermal insulator between the pressure chamber and the turbine, wherein the thermal insulator has a through hole through which the shaft passes and is clearance-fitted with the thermal insulator.
In this scheme, set up the heat insulating part between pressure chamber and turbine, the heat insulating part forms the physics separation to high temperature waste gas, and the resistance in the shell in the middle of further increasing high temperature waste gas gets into, and the difficult heat conduction of heat insulating part is favorable to reducing heat transfer simultaneously, guarantees that the temperature in the middle of the shell does not receive the influence of turbine, further improves exhaust gas turbocharger's security and reliability.
In the technical scheme, the pressure of the pressure cavity is higher than the pressure in the turbine shell, and the difference between the pressure of the pressure cavity and the pressure in the turbine shell is determined according to the gap between the through hole and the rotating shaft.
In this scheme, the pressure of pressure chamber is greater than the pressure in the turbine shell, makes the high temperature waste gas that is located the turbine shell can't get into the pressure chamber of high pressure relatively like this, confirms the pressure differential between pressure chamber and the turbine shell according to the size in clearance, makes the pressure in the pressure chamber be in one for reasonable state, avoids the pressure of pressure intracavity too big when guaranteeing that the pressure of pressure intracavity is greater than the pressure of turbine shell, causes back oil chamber oil return pressure to rise.
In the technical scheme, the value range of the difference between the pressure of the pressure cavity and the pressure in the turbine shell is 20-500 kPa.
In this scheme, the pressure of pressure chamber is greater than the pressure of turbine shell and is 20kPa at least, effectively guarantee like this that the pressure of pressure chamber is greater than the pressure of turbine shell, and the pressure differential between pressure chamber and the turbine shell has certain home range, the effectual pressure that prevents the turbine shell internal pressure and float and exceed the pressure of pressure chamber, the pressure of pressure chamber is greater than the pressure of turbine shell and 500kPa at most, it is too big to avoid the pressure in the pressure chamber, and then the pressure that leads to middle shell risees, and then causes back oil chamber oil return pressure to rise.
In the technical scheme, the value range of the difference between the pressure of the pressure cavity and the pressure in the turbine shell is 50-100 kPa.
In the above technical solution, the exhaust gas turbocharger further includes a sealing member that seals a gap between the heat insulating member and the rotating shaft.
In this scheme, the clearance between sealing member sealed heat insulating part and the pivot like this, further reduces the clearance between heat insulating part and the pivot to further increase the resistance that high temperature waste gas got into in the middle of the shell.
In any of the above technical solutions, the pressurization system includes a one-way valve, and the one-way valve is adapted to enable the pressurization system to be communicated with the pressure chamber, and enable the pressure chamber to be cut off from the pressurization system.
In this scheme, set up the turbocharging system and include the check valve, realize one-way conduction between turbocharging system and the pressure chamber through the check valve, prevent that gas from flowing backwards to the turbocharging system in the pressure chamber, guarantee the pressure stability of pressure intracavity.
In any of the above technical solutions, the supercharging system has an air inlet, and the air inlet is used for communicating with at least one of the compressor, the air compressor and the environment.
In this scheme, turbocharging system's air inlet can communicate with at least one of compressor, air compressor and environment these three, and like this, turbocharging system's the mode of getting gas is more nimble, is convenient for reform transform current exhaust gas turbocharger.
An embodiment of the second aspect of the present invention provides an engine, including: an exhaust gas turbocharger as claimed in any one of the preceding claims.
The utility model discloses the engine that above-mentioned embodiment provided is through being provided with among the above-mentioned arbitrary technical scheme exhaust gas turbocharger to have above all beneficial effects, no longer describe here.
An embodiment of the third aspect of the present invention provides a vehicle including the engine according to any one of the above technical solutions.
Utility model discloses the vehicle that above-mentioned embodiment provided is through being provided with in the above-mentioned arbitrary technical scheme the engine to have above whole beneficial effect, no longer describe herein.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic cross-sectional view of an exhaust gas turbocharger according to an embodiment of the present invention;
fig. 2 is a partially enlarged schematic view of a portion a shown in fig. 1.
100 exhaust gas turbocharger, 110 turbine, 111 turbine shell, 112 turbine, 120 intermediate body, 121 intermediate shell, 122 rotating shaft, 123 bearing, 124 oil return cavity, 125 pressure cavity, 130 compressor, 131 compressor shell, 132 impeller, 140 supercharging system, 141 air inlet, 142 one-way valve, 150 heat insulation piece, 151 first section, 152 second section, 153 middle section and 154 through hole.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The exhaust gas turbocharger 100 according to some embodiments of the present invention is described below with reference to fig. 1 to 2.
As shown in fig. 1 and fig. 2, an exhaust gas turbocharger 100 provided in an embodiment of the first aspect of the present invention includes a turbine 110, an intermediate body 120 and a compressor 130, where the turbine 110 includes a turbine casing 111 and a turbine 112 disposed in the turbine casing 111, the compressor 130 includes a compressor casing 131 and an impeller 132 disposed in the compressor casing 131, the intermediate body 120 includes an intermediate casing 121 and a rotating shaft 122 disposed in the intermediate casing 121, one end of the rotating shaft 122 is connected to the impeller 132, the other end of the rotating shaft is connected to the turbine 112, and the rotating shaft 122 is rotatably disposed in the intermediate casing 121 through a bearing 123, an oil return chamber 124 for containing lubricating oil is disposed in the intermediate casing 121, the intermediate casing 121 is provided with a pressure chamber 125, the pressure chamber 125 is located between the oil return chamber 124 and the turbine 110, the pressure chamber 125 is connected to a pressurization system.
The utility model discloses above-mentioned embodiment provides an exhaust gas turbocharger 100, set up pressure chamber 125 between oil return chamber 124 and turbine 110, turbocharging system 140 makes pressure chamber 125 pressure grow to pressure chamber 125 pressure boost, thus, the resistance grow of shell 121 in the middle of the high temperature waste gas entering that is located turbine shell 111, thereby make shell 121 in the middle of the unable entering of high temperature waste gas, and simultaneously, pressure chamber 125 is established between oil return chamber 124 and turbine 110, make oil return chamber 124 and turbine 110 interval distribution, effectively block the heat transfer between oil return chamber 124 and the turbine 110, the temperature in the shell 121 is maintained in the operating temperature scope of lubricating oil in the middle of guaranteeing, avoid lubricating oil operating temperature to rise and lead to bearing 123 department lubricating oil coking, improve exhaust gas turbocharger 100's security and reliability.
For example, the pressurization system 140 may be understood as an exhaust channel, an air outlet end of the exhaust channel is communicated with the pressure chamber 125 and exhausts the gas to the pressure chamber 125, that is, the pressurization system 140 exhausts the gas to the pressure chamber 125, so that the pressure of the pressure chamber 125 is gradually increased, and the resistance of the high-temperature exhaust gas entering the middle shell 121 is gradually increased, the pressure chamber 125 has a certain pressure maintaining property relatively, when the pressurization system 140 exhausts the gas to the pressure chamber 125, the pressure in the pressure chamber 125 can be rapidly increased, which is beneficial to shortening the pressurization time and improving the pressurization efficiency, and the pressure in the pressure chamber 125 can be maintained unchanged for a period of time, which is beneficial to ensuring that the pressure in the pressure chamber 125 is greater than the pressure in the pressure chamber 125, and the pressurization system 140 can provide the low-temperature gas relative to the high-temperature exhaust gas to the pressure chamber 125, further reducing the temperature within the pressure chamber 125.
Example 1:
as shown in fig. 1, in addition to the features of the above-mentioned embodiment, the present embodiment further defines that the exhaust gas turbocharger 100 further includes a heat insulating member 150, the heat insulating member 150 is located between the pressure chamber 125 and the turbine 110, wherein the heat insulating member 150 has a through hole 154, the rotating shaft 122 passes through the through hole 154 and is in clearance fit with the heat insulating member 150, and the heat insulating member 150 forms a physical barrier to the high-temperature exhaust gas, further increases the resistance of the high-temperature exhaust gas to enter the middle housing 121, ensures that the temperature in the middle housing 121 is not affected by the turbine 110, and further improves the safety and reliability of the exhaust gas turbocharger 100.
Specifically, as shown in fig. 2, the heat insulation member 150 is a ring-shaped heat insulation plate, and the heat insulation plate includes a first section 151, a second section 152, and an intermediate section 153 connecting the first section 151 and the second section 152, wherein one end of the intermediate section 153 forms a turning transition with the first section 151, and the other end of the intermediate section 153 forms a turning transition with the second section 152.
Example 2:
as shown in fig. 1, in addition to the features of the above-mentioned embodiment, the present embodiment further defines that the pressure chamber 125 has a pressure larger than the pressure in the turbine housing 111, and the difference between the pressure of the pressure chamber 125 and the pressure in the turbine housing 111 is determined according to the gap between the through hole 154 and the rotating shaft 122, wherein the gap may be understood as a gap between the wall of the through hole 154 and the outer peripheral wall of the rotating shaft 122, the gap is defined as a difference between the radius of the through hole 154 and the radius of the rotating shaft 122 when the axis of the through hole 154 and the axis of the rotating shaft 122 are collinear, i.e., the size of the gap (e.g., △ t shown in fig. 1), the pressure of the pressure chamber 125 is larger than the pressure in the turbine housing 111, such that the high-temperature exhaust gas located in the turbine housing 111 cannot enter the relatively high-pressure chamber 125, and the pressure difference between the pressure chamber 125 and the turbine housing 111 is determined according to the size of the gap, it is understood that the high-temperature exhaust gas can enter the pressure chamber 125 along the gap, the gap is larger, the pressure chamber 125 is determined according to the size of the gap, such that the pressure difference between the pressure chamber 125 and the pressure chamber 125 is in the turbine housing 125 in a state that the oil.
For example, the pressure difference between the pressure chamber 125 and the turbine casing 111 is △ F, the gap between the through hole 154 and the rotating shaft 122 is △ t, and the relationship between △ F and △ t is positive.
Example 3:
in addition to the features of the above embodiments, the present embodiment further defines that the difference between the pressure of the pressure chamber 125 and the pressure inside the turbine shell 111 ranges from 20kPa to 500 kPa.
The pressure of the pressure chamber 125 is greater than the pressure of the turbine shell 111 by at least 20kPa, so that the pressure of the pressure chamber 125 is effectively ensured to be greater than the pressure of the turbine shell 111, and the pressure difference between the pressure chamber 125 and the turbine shell 111 has a certain moving range, thereby effectively preventing the pressure in the turbine shell 111 from floating and exceeding the pressure of the pressure chamber 125, and the pressure of the pressure chamber 125 is greater than the pressure of the turbine shell 111 by at most 500kPa, thereby avoiding the pressure in the pressure chamber 125 from being too large, further causing the pressure of the middle shell 121 to be increased, and further causing the return oil pressure of the oil.
Further, the difference between the pressure of the pressure chamber 125 and the pressure inside the turbine shell 111 ranges from 100kPa to 500 kPa.
Optionally, the difference between the pressure of the pressure chamber 125 and the pressure inside the turbine shell 111 ranges from 50kPa to 100 kPa.
Optionally, the difference between the pressure of the pressure chamber 125 and the pressure inside the turbine shell 111 ranges from 20kPa to 50 kPa.
Of course, the above is only the preferred value range of the embodiment, and a person skilled in the art may select other values as the value range of the difference between the pressure of the pressure chamber 125 and the pressure in the turbine shell 111 according to specific requirements.
For example, the range of the pressure difference between the pressure chamber 125 and the turbine housing 111 is determined according to the size of the gap between the rotating shaft 122 and the heat insulating member 150, the gap is different between different exhaust gas turbochargers 100, the range of the pressure difference may be relatively larger for the exhaust gas turbocharger 100 with a larger gap, the range of the pressure difference may be relatively smaller for the exhaust gas turbocharger 100 with a smaller gap, or the range of the pressure difference between the pressure chamber 125 and the turbine housing 111 is determined according to the pressure resistance of the intermediate housing 121 and the heat insulating member 150.
Example 4:
as shown in fig. 1 and 2, in addition to the features of any of the embodiments described above, the present embodiment further defines that the exhaust turbocharger 100 further includes a seal that seals a gap between the heat insulator 150 and the rotating shaft 122. The sealing element can be a rubber element, an oil seal, etc., and further reduces the gap between the heat insulation element 150 and the rotating shaft 122, thereby further increasing the resistance of the high-temperature waste gas entering the middle shell 121, because the flow area between the middle shell 121 and the turbine shell 111 is reduced, the high-temperature waste gas is not easy to enter the middle shell 121, the pressure in the pressure cavity 125 can be relatively reduced, which is beneficial to reducing the workload of the pressurization system 140 and shortening the pressurization time of the pressurization system 140.
Example 5:
in addition to the features of any of the embodiments described above, the present embodiment further defines that, as shown in fig. 1 and 2, the pressurization system 140 includes a one-way valve 142, the one-way valve 142 being adapted to communicate the pressurization system 140 to the pressure chamber 125 and to block the pressure chamber 125 from the pressurization system 140. The one-way valve 142 is used for realizing one-way communication between the pressurization system 140 and the pressure cavity 125, preventing gas from flowing backwards from the pressure cavity 125 to the pressurization system 140, and ensuring the pressure in the pressure cavity 125 to be stable.
Example 6:
in addition to the features of any of the embodiments described above, the present embodiment further defines that the supercharging system 140 has an air inlet 141, the air inlet 141 being adapted to communicate with at least one of the compressor 130, the air compressor and the environment. Thus, the air intake mode of the supercharging system 140 is more flexible, and the existing exhaust gas turbocharger is convenient to modify.
An embodiment of the second aspect of the present invention provides an engine, including: the exhaust gas turbocharger 100 of any of the embodiments described above.
The utility model discloses the engine that above-mentioned embodiment provided is through being provided with exhaust gas turbocharger 100 in above-mentioned arbitrary embodiment to have above whole beneficial effect, no longer describe herein.
An embodiment of a third aspect of the present invention provides a vehicle, including an engine in any of the above embodiments.
Utility model discloses the vehicle that above-mentioned embodiment provided is through being provided with the engine in above-mentioned arbitrary embodiment to have above whole beneficial effect, no longer describe herein.
In one embodiment of the invention, as shown in fig. 1 and 2, an exhaust gas turbocharger 100
The compressor comprises a turbine shell 111, a compressor shell 131 and a middle shell 121, wherein a turbine 112 is arranged in the turbine shell 111, a compressor 130 is arranged in the compressor shell 131, the compressor 130 is provided with an impeller 132, the turbine 112 is in transmission connection with the impeller 132 through a rotating shaft 122, the turbine 112 is pushed by the inertia impulse force of high-temperature waste gas exhausted by an engine, the turbine 112 drives the coaxial impeller 132, the impeller 132 rotates and compresses gas to be pressurized to enter an engine cylinder, a return oil cavity 124 is arranged in the middle shell 121 and stores lubricating oil, the rotating shaft 122 is provided with a bearing 123, the lubricating oil plays a role in cooling and lubricating between the rotating shaft 122 and the bearing 123, wherein the rotating shaft 122 and the bearing 123 are arranged in the middle shell 121, a pressure cavity 125 is also arranged between the return oil cavity 124 and the turbine 110, the pressure cavity 125 is connected with a pressurization system 140, and in order to prevent the high-temperature waste gas in the turbine, a thermal shield 150 is provided between the bearing 123 and the turbine 112 to block high temperature exhaust gas from entering the pressure chamber 125.
In detail, a vent hole is arranged on the pressure chamber 125, the supercharging system 140 is an exhaust passage, the exhaust passage has an air inlet 141 and an air outlet, the air outlet of the exhaust passage is communicated with the vent hole of the pressure chamber 125, the air inlet 141 of the exhaust passage is communicated with the environment, and the air in the environment is driven by the driving device of the air pump to be continuously discharged into the pressure chamber 125 through the exhaust passage, so that the pressure of the pressure chamber 125 is increased, the pressure of the pressure chamber 125 is greater than the pressure in the turbine shell 111, it is ensured that the exhaust gas in the turbine shell 111 cannot enter the middle shell 121 and the oil return chamber 124, the influence of the temperature of the exhaust gas at the turbine end on the working temperature of the engine oil is reduced, and the risks of coking of.
It should be noted that the air inlet 141 of the exhaust passage is not limited to be in communication with the environment, and the air inlet 141 of the exhaust passage may be configured to be in communication with an air compressor of an engine, or the air inlet 141 of the exhaust passage may be configured to be in communication with the compressor housing 131, and air in the natural environment may be exhausted into the pressure chamber 125 by an air exhausting device.
Alternatively, one skilled in the art may eliminate the pressurization system 140 according to specific requirements, and instead, provide a sealing oil seal between the rotating shaft 122 and the heat insulating member 150 to completely seal the gap between the rotating shaft 122 and the heat insulating member 150, thereby isolating the high-temperature exhaust gas from entering the intermediate housing 121 and the oil return chamber 124.
The utility model provides a waste gas turbo charger, engine and vehicle, set up the pressure chamber between returning oil chamber and turbine, charge-up system makes pressure chamber pressure grow to the pressure chamber pressure boost, thus, the resistance grow of shell in the middle of the high temperature waste gas entering that is located the turbine shell, thereby make the unable middle shell that gets into of high temperature waste gas, and simultaneously, the pressure chamber is established between returning oil chamber and turbine, make back oil chamber and turbine interval distribution, effectively block the heat transfer between oil chamber and the turbine, the temperature in the shell is maintained in the working temperature scope of lubricating oil in the middle of the assurance, avoid lubricating oil operating temperature to rise and lead to bearing department coking lubricating oil, improve waste gas turbo charger's security and reliability.
In the present invention, the terms "mounting", "connecting", "fixing" and the like are used in a broad sense, for example, "connecting" may be a fixed connection, a detachable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be understood that the terms "inside" and "outside" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an exhaust gas turbocharger, includes turbine, midbody and compressor, the turbine includes the turbine shell and locates turbine in the turbine shell, the compressor includes the compressor shell and locates impeller in the compressor shell, the midbody includes middle shell and locates pivot in the middle shell, the one end of pivot is connected the impeller, the other end is connected the turbine, just the pivot through the bearing rotate set up in the middle shell, be equipped with back oil chamber that is used for holding lubricating oil in the middle shell, a serial communication port, the middle shell is equipped with the pressure chamber, the pressure chamber is located back oil chamber with between the turbine, the pressure chamber is connected with the turbocharging system, the turbocharging system configuration is right the pressure chamber pressure boost.
2. The exhaust gas turbocharger according to claim 1, further comprising:
a thermal insulator between the pressure chamber and the turbine, wherein the thermal insulator has a through hole through which the shaft passes and is clearance-fitted with the thermal insulator.
3. The exhaust-gas turbocharger according to claim 2,
the pressure of the pressure chamber is greater than the pressure in the turbine shell, and the difference between the pressure of the pressure chamber and the pressure in the turbine shell is determined according to the gap between the through hole and the rotating shaft.
4. The exhaust-gas turbocharger according to claim 3,
the difference between the pressure of the pressure chamber and the pressure in the turbine shell ranges from 20kPa to 500 kPa.
5. The exhaust-gas turbocharger according to claim 4,
the difference between the pressure of the pressure chamber and the pressure in the turbine shell ranges from 50kPa to 100 kPa.
6. The exhaust gas turbocharger according to claim 2, further comprising:
and a sealing member sealing a gap between the heat insulating member and the rotating shaft.
7. The exhaust gas turbocharger according to any one of claims 1 to 6,
the pressurization system comprises a one-way valve adapted to communicate the pressurization system to the pressure chamber and to block the pressure chamber to the pressurization system.
8. The exhaust gas turbocharger according to any one of claims 1 to 6,
the supercharging system has an air inlet for communication with at least one of a compressor, an air compressor and the environment of the exhaust gas turbocharger.
9. An engine comprising an exhaust gas turbocharger according to any one of claims 1 to 8.
10. A vehicle characterized by comprising the engine of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921320534.7U CN210239847U (en) | 2019-08-15 | 2019-08-15 | Exhaust gas turbocharger, engine and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921320534.7U CN210239847U (en) | 2019-08-15 | 2019-08-15 | Exhaust gas turbocharger, engine and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN210239847U true CN210239847U (en) | 2020-04-03 |
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| CN201921320534.7U Active CN210239847U (en) | 2019-08-15 | 2019-08-15 | Exhaust gas turbocharger, engine and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388257A (en) * | 2019-08-15 | 2019-10-29 | 昆山三一动力有限公司 | Exhaust-driven turbo-charger exhaust-gas turbo charger, engine and vehicle |
-
2019
- 2019-08-15 CN CN201921320534.7U patent/CN210239847U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388257A (en) * | 2019-08-15 | 2019-10-29 | 昆山三一动力有限公司 | Exhaust-driven turbo-charger exhaust-gas turbo charger, engine and vehicle |
| CN110388257B (en) * | 2019-08-15 | 2024-07-26 | 昆山三一动力有限公司 | Exhaust gas turbocharger, engine and vehicle |
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