CN115875115A - Working method and system of turbocharger - Google Patents
Working method and system of turbocharger Download PDFInfo
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- CN115875115A CN115875115A CN202211212818.0A CN202211212818A CN115875115A CN 115875115 A CN115875115 A CN 115875115A CN 202211212818 A CN202211212818 A CN 202211212818A CN 115875115 A CN115875115 A CN 115875115A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
According to the working method and the system of the turbocharger, the working method of the turbocharger comprises the following steps: when the engine exhausts insufficiently, the motor serving as the motor drives the turbine in the turbocharger to rotate at the same speed and rapidly enter a high-speed rotating state, so that the air inlet pressure of the engine is increased, the working efficiency of the engine is improved, and the acceleration time of the engine is shortened.
Description
Technical Field
The invention relates to a turbocharger working method and system.
Background
In the traditional turbocharging technology, because the engine exhaust gas is insufficient under the working condition of low rotating speed of the engine, the turbocharger cannot bring power boost, and the power response delay effect can be generated due to the obstruction of the engine exhaust gas. In addition, the friction phenomenon exists between the rotating shaft and the air bearing during low-speed operation, and the service life of the air bearing is further reduced when the friction phenomenon is serious.
Disclosure of Invention
It is an object of the present invention to provide a turbocharger operating method and system that solves the above-mentioned problems of the prior art.
In order to solve the above problem, according to an aspect of the present invention, there is provided a turbocharger operating method: when the exhaust of the engine is insufficient, the motor serving as the motor drives the turbine in the turbocharger to rotate at the same speed and rapidly enter a high-speed rotating state, so that the air inlet pressure of the engine is increased, the working efficiency of the engine is improved, and the acceleration time of the engine is shortened.
In one example, when engine exhaust is excessive, the motor acts as a generator, engine exhaust drives a turbine to drive the motor to generate electricity, and the electricity generated is stored in a storage battery.
According to an aspect of the present invention, there is provided a system for implementing the above turbocharger operation method, comprising: the turbine is arranged on the turbine rotating shaft, the turbine rotating shaft is connected with a motor shaft of the motor, and when the engine exhausts insufficiently, the motor serves as an electric motor and drives the turbine to rotate.
In one example, when engine exhaust is excessive, the motor acts as a generator, engine exhaust drives a turbine to drive the motor to generate electricity, and the electricity generated by electricity generation is stored in the storage battery.
In one example, the motor shaft axis of the motor is collinear with the axis of the turbine rotary shaft.
In one example, when the engine is under-exhausted, the electric machine is used as a motor, and the electric machine drives the turbine to rotate at a high speed to increase the air inlet pressure of the engine and shorten the acceleration time of the engine.
In one example, the air bearing is further included, the turbine rotating shaft is arranged on the air bearing, when the exhaust of the engine is insufficient, the motor is used as a motor, the motor drives the turbine rotating shaft to rotate at a high speed, and the friction time between the turbine rotating shaft and the air bearing matched with the turbine rotating shaft is reduced.
In one example, the electric machine operates using electrical power in the battery when engine exhaust is insufficient.
According to one aspect of the present invention, there is provided a method of tail gas power generation for electronic turbocharging, comprising: the generator generates electricity from the engine exhaust, which is used by the electronic turbine to operate.
In one example, the electrical power generated by the generator from the engine exhaust is stored in a battery.
In one example, an electronic turbine operates using electrical power stored in a battery to boost intake air for input into an engine cylinder.
According to one aspect of the present invention, there is provided a system for exhaust gas power generation for electronic turbocharging, comprising: the high-temperature tail gas of the engine drives the generator to generate electricity, and the electronic turbine works by using the electricity.
In one example, the generator generates electricity to produce electricity that is stored in a battery, and the electronic turbine operates using the electricity stored in the battery.
In one example, the electric turbine includes an electric motor and a vane, and the electric motor is energized to rotate the vane to input intake supercharged charge air into a cylinder of the engine, thereby improving the operating efficiency of the engine.
According to an aspect of the present invention, there is provided an air bearing stabilization method including:
when the engine exhausts insufficiently, the motor works and drives the rotating shaft to rapidly enter a high-speed rotating state, so that the friction time between the rotating shaft and an air bearing matched with the rotating shaft is shortened.
In one example, when engine exhaust is excessive, the engine exhaust drives the electric machine to generate electricity.
In one example, the electric machine functions as a motor when engine exhaust is insufficient and as an engine when engine exhaust is excessive.
In one example, the electrical power generated by the electrical machine is stored in a battery.
According to an aspect of the present invention, there is provided an air bearing stabilization system comprising: the air-conditioning system comprises an engine, a motor and an air bearing, wherein the motor drives a rotating shaft to rotate, the rotating shaft is arranged on the air bearing, the motor is used as a motor when the engine exhausts insufficiently, and the motor is used as the engine when the engine exhausts excessively.
In one example, when the engine is short of exhaust, the motor is used as a motor, and the motor drives the rotating shaft to quickly enter a high-speed rotating state, so that the friction time between the rotating shaft and the air bearing matched with the rotating shaft is reduced.
In one example, the electric machine operates using electrical power from the battery when the engine is underexhausted.
In one example, when engine exhaust is excessive, the electric machine is used as a generator, and the exhaust of the engine drives the electric machine to generate electricity, and the generated electricity is stored in a storage battery.
In one example, the motor rotates a pinch roller shaft of a turbocharger connected with a rotating shaft, and a pinch roller of the turbocharger rotates to input pressurized air into a cylinder of the engine, so that the working efficiency of the engine is improved.
Drawings
FIG. 1 is a schematic diagram of an exhaust gas power generation for an electronic turbocharging system in an embodiment of the present invention;
FIG. 2 is a schematic view of an air bearing stabilization system in an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the essential spirit of the technical solution of the present invention.
In the following description, for the purposes of illustrating various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that the embodiments may be practiced without one or more of the specific details. In other instances, well-known devices, structures and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.
Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In the following description, for the purposes of clearly illustrating the structure and operation of the present invention, directional terms will be used, but terms such as "front", "rear", "left", "right", "outer", "inner", "outer", "inward", "upper", "lower", etc. should be construed as words of convenience and should not be construed as limiting terms.
In the prior art, turbocharging generally referred to in the industry is an exhaust turbocharger, and in the conventional turbocharging technology, because of insufficient exhaust of an engine under a low-speed working condition of the engine, the turbocharger cannot bring about power boost and can also generate a power response delay effect due to obstruction of the exhaust of the engine.
Example 1
The embodiment provides a tail gas power generation system and method for an electronic turbocharging system.
A method of exhaust gas power generation for electronic turbocharging, comprising generating electricity from engine exhaust gas by a generator, operating an electronic turbine with said electricity, the generator being electrically connected to the electronic turbine.
In one embodiment, the generator generates electricity from engine exhaust and stores the electricity in a battery, and the electronic turbine operates using the electricity stored in the battery, which is electrically connected to the electronic turbine.
In one embodiment, the control unit ECU controls the storage battery to electrify the electronic turbine, the rotating speed of the electronic turbine is increased, and when the rotating speed and the exhaust temperature of the engine continuously rise, the generator generates electricity through the exhaust gas of the engine and stores the electricity in the storage battery, and the generator is connected with the storage battery. The electric turbine operates using electric power stored in a storage battery, which is electrically connected to the electric turbine.
As shown in fig. 1, the present embodiment provides a system 10 for generating power by using exhaust gas for electronic turbocharging, which includes an engine 11, a generator 12, an electronic turbine 13 and a storage battery (battery) 14.
The high-temperature exhaust gas of the engine 11 drives the rotating shaft 121 of the generator 12 connected with the turbine shaft to rotate for generating electricity, the generator 12 stores the electricity generated by the exhaust gas of the engine 11 in the storage battery 14 under the control of the control unit ECU, and the generator 12 is electrically connected with the storage battery 14. The electronic turbine 13 operates using electric power stored in a storage battery 14, and the storage battery 14 is electrically connected to the electronic turbine 13. The electric turbine 13 includes a motor 131 and blades 132. The motor 131 is energized to rotate the vane 132, and the intake supercharged charge air is input into the cylinder of the engine 11 by the rotation of the vane 132, thereby improving the operating efficiency of the engine 11.
The method and the system for the tail gas power generation for the electronic turbocharging not only solve the problem of the power source of the electronic turbine, but also solve the problem of the hysteresis effect of the turbine in the prior art.
Example 2
The embodiment provides a turbocharger working method, which comprises the following steps: when the engine exhausts insufficiently, the motor serving as the motor drives the turbine in the turbocharger to rotate at the same speed and rapidly enter a high-speed rotating state, so that the air inlet pressure of the engine is increased, the working efficiency of the engine is improved, and the acceleration time of the engine is shortened.
When the automobile is just started, the rotating speed of the engine is low, the engine exhausts insufficiently and cannot drive the turbocharger to work, and a long time is taken for the rotating speed of the engine to reach a high speed from a low speed.
In one embodiment, an engine takes 15-20 minutes from start-up to a main operating period of 1200-1800 rpm. If the motor is adopted to drive the turbine in the turbocharger to rotate at the same speed and quickly enter a high-speed rotating state, the turbine is rotated early, the air inlet pressure of the engine is increased, the working efficiency of the engine is improved, the high rotating speed can be achieved within 7-8 minutes, the acceleration time of the engine is shortened, the vehicle speed is quickly improved, and importantly, the oil consumption of the engine can be greatly reduced, and the oil consumption of the engine from the rotating speed of 0 to the rotating speed of a working section is the highest when the engine is started. The method in the embodiment not only saves the fuel cost, but also can be quickly started to a high-speed state.
When engine exhaust is excessive, the motor acts as a generator, the engine exhaust drives the motor to generate electricity, and the electricity generated by the electricity generation is stored in the storage battery.
In one embodiment, the electric motor serving as the electric motor is used for driving the turbine in the turbocharger to rotate, so that the turbocharger can work when the engine is not used in a high-speed state, namely in a low-speed state, the air inlet pressure of the engine is increased, and the working efficiency of the engine is improved. It can be seen that the difficulty of processing the low-speed engine is greatly reduced compared with the processing of the high-speed engine, so that a large amount of production cost can be saved.
The embodiment provides a system for realizing the working method of the turbocharger, and the system comprises an engine, a motor, a storage battery, a turbine and a turbine rotating shaft, wherein the turbine is arranged on the turbine rotating shaft, the turbine rotating shaft is connected with a motor shaft of the motor, when the engine exhausts insufficient gas, the motor is used as a motor, the motor drives the turbine to rotate, the air inlet pressure of the engine is increased, and the working efficiency of the engine is improved.
In one example, when engine exhaust is excessive, the electric machine functions as a generator, engine exhaust drives the electric machine to generate electricity, and the electricity generated by the electricity generation is stored in the storage battery.
In one example, a motor shaft axis of the motor is collinear with an axis of the turbine rotary shaft.
In one example, when the engine is short of exhaust, the motor is used as a motor, and the motor drives the turbine rotating shaft to rotate at a high speed, so that the acceleration time of the engine is shortened.
In one example, the air bearing is further included, the turbine rotating shaft is arranged on the air bearing, when the engine is short of exhaust gas, the motor is used as a motor, the motor drives the turbine rotating shaft to rotate at a high speed, and the friction time between the turbine rotating shaft and the air bearing matched with the turbine rotating shaft is reduced.
In one example, the electric machine operates using electrical power in the battery when engine exhaust is insufficient.
In one example, the ECU controls the storage battery to electrify the motor in a low-speed state, and the rotating speed of the turbocharger is increased to reach a rated value; when the rotating speed and the exhaust temperature of the engine reach rated values, the supply and demand are balanced, the storage battery stops supplying power to the motor, and the motor is in an idle state; when the rotating speed and the exhaust temperature of the engine continuously rise, the turbocharger is utilized to drive the generator to generate electricity, and meanwhile, the temperature of the tail gas is also reduced.
The motor in the embodiment has the function of a motor or a generator, and the function can be selectively converted according to the actual working condition. For example, when the engine is short of exhaust, the motor acts as a motor to drive the turbine to rotate at the same speed, thereby increasing the pressure of the engine intake air.
When engine exhaust is excessive, the motor is used as a generator, the engine exhaust drives the turbine to rotate the motor, and the motor rotates to generate power. The arrangement of the motor of the embodiment solves the problem of the hysteresis effect of the turbine in the prior art.
The present embodiments also provide an air bearing stabilization system and method.
An air bearing stabilization method comprising:
when the engine exhausts insufficiently, the motor works and drives the rotating shaft to rapidly enter a high-speed rotating state, so that the friction time between the rotating shaft and an air bearing matched with the rotating shaft is shortened.
In one embodiment, when engine exhaust is excessive, the engine exhaust drives the electric machine to generate electricity.
In one embodiment, the electric machine functions as a motor when engine exhaust is insufficient and as an engine when engine exhaust is excessive.
In one embodiment, the electrical power generated by the electrical machine is stored in a battery.
As shown in fig. 2, the present embodiment provides an air bearing stabilization system 20, which includes an engine 21, a motor 22 (engine and motor), an air bearing 23, a turbine rotation shaft 221, a storage battery (battery) 24, and a control unit 25.
Wherein the electric machine 22 has the function of a motor or a generator, and the function can be selectively switched according to the actual working condition, and the control unit 25 comprises a control unit for charging the storage battery and a switching control of the motor or the generator.
The high-temperature tail gas of the engine 21 drives the central shaft of the motor 22 to rotate through the turbine rotating shaft 221, the turbine rotating shaft 221 is arranged on the air bearing 23, when the engine exhausts insufficient, for example, when the engine is just started, the rotating speed is slow, friction exists between the turbine rotating shaft 221 and the air bearing 23, when the rotating speed of the turbine rotating shaft 221 is increased to a certain value, the turbine rotating shaft 221 floats in the air bearing 23, only gas friction exists between the turbine rotating shaft 221 and the air bearing 23, and the service life of the air bearing 23 is greatly prolonged. Therefore, when the engine exhaust is insufficient, the motor 22 drives the turbine rotating shaft 221 to rapidly enter a high-speed rotating state, so that the friction time between the turbine rotating shaft 221 and the air bearing 23 matched with the turbine rotating shaft 221 is reduced, and the turbine rotating shaft 221 floats in the air bearing 23 as soon as possible to enter a normal working state.
In the embodiment, when the engine exhausts insufficiently, the motor 22 is used as a motor, and the motor 22 drives the turbine rotating shaft 221 to quickly enter a high-speed rotating state, so that the friction time between the turbine rotating shaft 221 and the air bearing 23 matched with the turbine rotating shaft 221 can be reduced, and the turbine rotating shaft 221 floats in the air bearing 23 as soon as possible to enter a normal working state.
When the engine exhaust is excessive, the motor 22 is used as a generator, the engine exhaust drives the motor 22 to generate electricity, the high-temperature exhaust of the engine 21 drives the central shaft of the motor 22 to rotate through the turbine to generate electricity, the power generated by the motor 22 through the exhaust of the engine 21 is stored in the storage battery 24 under the control of the control unit 25, the generator 22 is connected with the control unit 25, and the control unit 25 is connected with the storage battery 14.
When the engine is under-exhausted, the motor 22 operates using the electric power stored in the battery 24.
In one embodiment, when the engine is short of exhaust gas, the motor 22 is used as a motor, the motor 22 drives the pinch roller of the turbocharger to rotate by driving the pinch roller shaft of the turbocharger connected with the turbine rotating shaft 221 to rotate, the motor 22 drives the turbine rotating shaft 221 to quickly enter a high-speed rotating state, and the intake supercharged pressurized air is input into the cylinder of the engine 21, so that the working efficiency of the engine 21 is improved.
In one embodiment, when the engine exhaust gas is excessive, the motor 22 is used as a generator, the high-temperature exhaust gas of the engine 21 drives the central shaft of the motor 22 to rotate through the turbine rotating shaft 221 to generate electricity, and drives the pressing wheel of the turbocharger to rotate, and the intake pressurized air is input into the cylinder of the engine 21, so that the working efficiency of the engine 21 is improved.
The air bearing stabilizing method and the air bearing stabilizing system not only solve the problem of the hysteresis effect of the turbine in the prior art, but also solve the problem of friction between the rotating shaft and the air bearing matched with the rotating shaft.
Example 3
The other structure of this embodiment is the same as embodiment 2 except that the air bearing 23 in embodiment 2 is replaced with a floating oil bearing in this embodiment.
The medium for supporting the rotation shaft by the air bearing 23 in the embodiment 2 is air, while the medium for supporting the rotation shaft by the floating oil bearing 23 in the embodiment is liquid oil.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (8)
1. A method of operating a turbocharger, comprising:
when the exhaust of the engine is insufficient, the motor serving as the motor drives the turbine in the turbocharger to rotate at the same speed and enter a high-speed rotating state, so that the intake pressure of the engine is increased.
2. The method of claim 1, wherein:
when engine exhaust is excessive, the motor serves as a generator, the engine exhaust drives the turbine of the turbocharger to drive the motor to generate electricity, and the electricity generated by electricity generation is stored in the storage battery.
3. A system for implementing the turbocharger operation method according to claim 1 or 2, comprising:
an engine, a motor, a battery, a turbine, and a turbine rotary shaft,
the turbine is arranged on the turbine rotating shaft, the turbine rotating shaft is connected with a motor shaft of the motor,
when the engine is short of exhaust, the motor is used as a motor and drives the turbine to rotate.
4. The system of claim 3, wherein:
when engine exhaust is excessive, the motor is used as a generator, the engine exhaust drives a turbine to drive the motor to generate electricity, and the electricity generated by electricity generation is stored in the storage battery.
5. The system of claim 3 or 4, wherein:
the axis of a motor shaft of the motor and the axis of the turbine rotating shaft are positioned on the same straight line.
6. The system of claim 3, wherein:
when the engine is short of exhaust, the motor is used as a motor, and the motor drives the turbine to rotate at a high speed for increasing the air inlet pressure of the engine.
7. The system of claim 3, further comprising:
the air bearing is provided with the turbine rotating shaft, when the exhaust of the engine is insufficient, the motor is used as a motor, and the motor drives the turbine rotating shaft to rotate at a high speed.
8. The system according to claim 6 or 7, characterized in that:
when the engine is short of exhaust, the motor operates using the electric power in the battery.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111162177 | 2021-09-30 | ||
| CN2021111621778 | 2021-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115875115A true CN115875115A (en) | 2023-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211212818.0A Pending CN115875115A (en) | 2021-09-30 | 2022-09-30 | Working method and system of turbocharger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115875115A (en) |
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2022
- 2022-09-30 CN CN202211212818.0A patent/CN115875115A/en active Pending
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