CN114198225A - Device for preventing surge of throttle valve, engine turbine system and vehicle - Google Patents
Device for preventing surge of throttle valve, engine turbine system and vehicle Download PDFInfo
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- CN114198225A CN114198225A CN202010990403.0A CN202010990403A CN114198225A CN 114198225 A CN114198225 A CN 114198225A CN 202010990403 A CN202010990403 A CN 202010990403A CN 114198225 A CN114198225 A CN 114198225A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/1015—Air intakes; Induction systems characterised by the engine type
- F02M35/10157—Supercharged engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10275—Means to avoid a change in direction of incoming fluid, e.g. all intake ducts diverging from plenum chamber at acute angles; Check valves; Flame arrestors for backfire prevention
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
- F02M35/10295—Damping means, e.g. tranquillising chamber to dampen air oscillations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
The embodiment of the application provides a device, engine turbine system and vehicle for preventing surge of a fuel release door, and belongs to the technical field of automobiles. The method comprises the following steps: the engine comprises an engine body, a gas compressor and a choke device; one end of the air compressor is connected with an air inlet pipeline used for inputting outside air, and the other end of the air compressor is connected with an air outlet pipeline connected with the engine body; the choke device is used for preventing the gas retained in the gas outlet pipeline from flowing back to the gas inlet pipeline and generating rotary oscillation. By using the device for preventing the surge of the accelerator release and the vehicle, the surge noise generated when the driver releases the accelerator can be reduced.
Description
Technical Field
The embodiment of the application relates to the technical field of automobiles, in particular to a device for preventing surge of a throttle valve, an engine turbine system and a vehicle.
Background
The surge of the throttle means that when a driver puts the vehicle into a high gear, for example, a third gear or a fourth gear, the driver presses the throttle to the bottom, and suddenly releases the throttle, the driver hears a sound similar to a "pigeon call", and the generated sound similar to the "pigeon call" is the surge noise of the throttle.
In the prior art, in order to solve the problem of the pine oil door surge, 10% of surge margin is reserved in a supercharger of an automobile generally.
However, even if a 10% surge margin is reserved, a large surge noise occurs in some vehicles.
Disclosure of Invention
The embodiment of the application provides a device for preventing surge of a throttle, an engine turbine system and a vehicle, and aims to solve the problem of reducing surge noise generated when the throttle is loosened.
A first aspect of the embodiments of the present application provides a device for preventing surge of a choke, including: the engine comprises an engine body, a gas compressor and a choke device;
one end of the air compressor is connected with an air inlet pipeline used for inputting outside air, and the other end of the air compressor is connected with an air outlet pipeline connected with the engine body;
the choke device is used for preventing the gas retained in the gas outlet pipeline from flowing back to the gas inlet pipeline and generating rotary oscillation.
Optionally, the method further comprises: a turbine, an exhaust manifold, an EGR valve and a control device;
the turbine is coaxially connected with the gas compressor to form a supercharger;
one end of the exhaust manifold is connected with the engine body, and the other end of the exhaust manifold is connected with the turbine;
the EGR valve is connected between the gas outlet pipeline and the exhaust manifold;
the control device is used for judging whether the time of the travel of the accelerator pedal in a preset range is less than a preset time value or not; and if so, controlling the EGR valve to be opened so as to deflate the gas in the air inlet pipeline.
Optionally, the control device is further configured to:
and if not, controlling the EGR valve to close.
Optionally, the preset range is 90% of the accelerator pedal stroke to 30% of the accelerator pedal stroke.
Optionally, the preset time value is 0.5S.
Optionally, the choke device comprises: the connecting pipe and the inner baffle plate;
the connecting pipe is arranged between the compressor and the air inlet pipeline and is used for communicating the compressor with the air inlet pipeline;
the inner baffle is arranged on the inner wall of the connecting pipe, and the length direction of the inner baffle is consistent with the axial direction of the connecting pipe and used for preventing airflow from rotating.
Optionally, the inner baffle is provided with at least two inner baffles, and a gap is formed between the at least two inner baffles, so as to reduce the resistance of air entering the compressor.
Optionally, at least two of the inner baffles are connected with each other at the end far away from the inner wall of the adapter tube.
A second aspect of embodiments of the present application provides an engine turbine system including an apparatus in an apparatus for preventing surge of a choke as provided in the first aspect of embodiments of the present application.
In a third aspect of the embodiments of the present application, a vehicle for preventing slack door surge is provided, which includes an apparatus for preventing slack door surge as provided in the first aspect of the embodiments of the present application or includes an engine turbine system as provided in the second aspect of the embodiments of the present application.
The device for preventing surge of the accelerator loosening, the engine turbine system and the vehicle are used for preventing rotary oscillation generated when gas retained in the gas outlet pipeline flows back to the gas inlet pipeline, and after the rotation of the gas in the gas inlet pipeline is prevented, the phenomenon of rotary oscillation of the gas in the gas inlet pipeline can not occur, so that surge noise generated by the accelerator loosening is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic illustration of an engine turbine system according to another embodiment of the present application;
FIG. 2 is a graph of a compressor according to an embodiment of the present application;
FIG. 3 is a vibration map of a vibration sensor emitting noise in an intake conduit as set forth in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a choke apparatus according to an embodiment of the present application;
fig. 5 is another schematic structural diagram of a choke apparatus according to an embodiment of the present application.
Description of reference numerals: 1. a compressor; 2. an air intake line; 3. an air outlet pipeline; 4. an engine body; 5. a turbine; 6. an exhaust manifold; 7. an EGR valve; 8. a choke device; 81. taking over a pipe; 82. and a baffle plate.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the daily driving process, after a driver puts the vehicle into a high gear, such as a third gear or a fourth gear, the driver steps on the accelerator to the bottom, suddenly releases the accelerator, and then hears the sound similar to a pigeon call, and the generated sound similar to the pigeon call is the surge noise of the throttle.
In the related art, in order to solve the problem of the surge of the throttle, a 10% surge margin is usually reserved in a supercharger of an automobile, and the problem of the surge generated by the throttle release is solved by reserving the 10% surge margin.
Referring to the schematic diagram of an engine turbine system as shown in FIG. 1, the engine turbine system may include: the engine comprises a compressor 1, a turbine 5, an engine body 4, an air inlet pipeline 2, an air outlet pipeline 3 and an exhaust manifold 6. The action principle of the engine turbine system is that waste gas exhausted by the engine body 4 reaches the turbine 5 after passing through the exhaust manifold 6, an impeller in the turbine 5 is driven to rotate and exhaust the waste gas, the impeller in the compressor 1 is driven to rotate when the turbine 5 rotates, air in the external environment is guided into the air outlet pipeline 3 by the rotation of the impeller of the compressor 1, and then the air enters the engine body 4 through the air outlet pipeline 3 to provide combustion power for a combustion chamber in the engine.
When the driver releases the accelerator, the gas input into the engine body 4 from the gas outlet pipeline 3 is reduced; at this time, the impeller in the compressor 1 keeps rotating due to inertia, and gas is continuously input into the gas outlet pipeline 3, so that the pressure in the gas outlet pipeline 3 is gradually increased, the pressure at the outlet of the compressor 1 is further increased, and the flow rate of the gas flow is reduced. Referring to the graph of the compressor 1 in fig. 2, the surge line is a boundary line of the stable operation of the compressor 1, and the joint operation line is an operation line of the compressor 1 at the current operation time. When the accelerator is gradually closed, the combined operation line gradually deviates to the surge line, the airflow flow gradually decreases, and the ratio of the pressure of the air outlet pipeline 3 of the compressor 1 to the pressure of the air inlet pipeline 2 of the compressor 1 gradually increases. When the throttle continues to decrease until the compressor 1 begins to operate unstably, surge noise is generated.
Accordingly, the margin of 10% is reserved, which means that the ratio of the flow difference of the 'surge line minus the joint operation line' on the same constant speed line to the flow difference of the 'choke line minus the surge line' is within the range of the ratio, and the surge noise does not occur even if the joint operation line is continuously shifted to the surge line. A 10% margin, i.e. a 10% error, within which the combined operating line does not exceed the surge line, thus reducing the chance of surge noise.
However, reserving a 10% margin may ensure that the chance of engine surge is reduced in a scenario where the engine in the vehicle is a gasoline engine, but in a diesel engine vehicle, reserving a 10% margin may still not avoid the generation of surge noise.
At this time, in a vehicle with a diesel engine as an engine, if the margin of 10% is adjusted to be small, the error range is smaller, the combined operation line easily exceeds the surge line, and the surge probability is increased; if the margin of 10% is increased, the combined operation line is deviated to the blocking line as shown in fig. 2, and after the deviation, the pressure of the air outlet pipeline 3 of the compressor 1 and the pressure of the air inlet pipeline 2 of the compressor 1 are reduced, so that the efficiency of the compressor 1 is reduced. Therefore, in a scenario where the engine in the vehicle is a diesel engine, different drawbacks occur regardless of whether the 10% margin is adjusted to be larger or smaller.
In view of the above, in the present application, in order to solve the problem of occurrence of surge noise due to the release of the accelerator without changing the margin of 10%, the cause of the occurrence of surge noise was tested. In the conventional thinking, the reason for generating the surge noise is considered to occur on the air outlet pipeline 3 or the compressor 1, however, after the test by the applicant, the reason for generating the surge phenomenon is found to occur on the air inlet pipeline 2, but not on the air outlet pipeline 3 or the compressor 1.
The surge noise is generated through vibration, when the test is carried out, the frequency of the surge noise is detected to be 400 Hz-2000 Hz when the throttle is loosened, then the vibration sensors are respectively arranged on the air compressor 1, the air inlet pipeline 2 and the air outlet pipeline 3, so that the three vibration sensors respectively emit the noise of 400 Hz-2000 Hz, finally the test data of the vibration sensors are analyzed, and the vibration at the air inlet pipeline 2 is most obvious, and the vibration intensity at other positions is lower than that of the air inlet pipeline 2 according to the figure 3, so that the reason of the 'surge noise' is generated on the air inlet pipeline 2.
Accordingly, the applicant has found that the cause of the generation of surge noise on the intake line 2 is: referring to fig. 1, when the driver releases the accelerator, the accelerator is gradually closed, so that the gas in the gas outlet pipeline 3 is gradually accumulated, and the pressure in the gas outlet pipeline 3 is obviously higher than the pressure in the gas inlet pipeline 2, so that the gas in the gas outlet pipeline 3 flows back into the gas outlet pipeline 3; and because the impeller of the compressor 1 rotates at a high speed, the gas flowing back from the air inlet pipeline 2 to the air inlet pipeline 2 also rotates at a high speed, and when the gas rotating at a high speed is extruded from the air outlet pipeline 3 to the air inlet pipeline 2, the air entering the air outlet pipeline 3 is driven to rotate at a high speed and oscillate in the air inlet pipeline 2, so that surge noise is generated.
Therefore, the choke device 8 is arranged at the end of the air inlet pipeline 2 and used for preventing the rotary oscillation generated when the gas retained in the air outlet pipeline 3 flows back to the air inlet pipeline 2, and after the rotation of the gas in the air inlet pipeline 2 is prevented, the phenomenon of rotary oscillation of the gas in the air inlet pipeline 2 cannot occur, so that the surge noise generated by loosening the throttle is reduced on the premise of not changing 10% of margin.
Example one
An apparatus for preventing surge of a choke, comprising: the engine body 4, the compressor 1 and the choke device 8;
one end of the compressor 1 is connected with an air inlet pipeline 2 used for inputting outside air, and the other end of the compressor is connected with an air outlet pipeline 3 connected with the engine body 4;
the choke device 8 is used for preventing the gas retained in the gas outlet pipeline 3 from flowing back to the gas inlet pipeline 2 to generate rotary oscillation.
Through the setting of this application choke device 8, the rotatory oscillation that produces when can preventing the gas that is detained in the gas outlet pipe way 3 to flow back to air inlet pipe way 2, after having prevented the rotation of air in the air inlet pipe way 2, then the phenomenon of gas at the inside rotatory vibration of air inlet pipe way 2 can not appear to under the prerequisite that does not change 10% margin, reduced the produced surge noise of pine throttle.
Based on the above-mentioned device for preventing surge of the choke, the present application provides the following examples of specific embodiments, which can be arbitrarily combined to form a new device for preventing surge of the choke without conflicting, and it should be understood that the new device for preventing surge of the choke formed by combining any examples falls within the scope of the present application.
In a possible embodiment, with reference to fig. 4, the choke device 8 comprises: the adapter 81 and the inner baffle 82; at least two inner baffles 82 are provided, for example, 4 or 2 inner baffles can be provided.
The connecting pipe 81 is arranged between the compressor 1 and the air inlet pipeline 2 and is used for communicating the compressor 1 and the air inlet pipeline 2;
the inner baffle 82 is disposed on the inner wall of the connection pipe 81, and the length direction of the inner baffle 82 is consistent with the axial direction of the connection pipe 81, so as to prevent the airflow from rotating.
In this embodiment, the gas flowing back from the gas outlet pipeline 3 to the gas inlet pipeline 2 rotates at a high speed along the inner wall of the gas inlet pipeline 2, and the rotation potential energy of the middle part of the gas inlet pipeline 2 is small, so that the baffle 82 is connected with the inner wall of the connecting pipe 81 to prevent the gas from rotating at a high speed on the inner wall of the gas inlet pipeline 2, and the high-speed rotation of the gas can be prevented.
In order to enable the baffle 82 to better prevent the gas from rotating at high speed, the baffle 82 can be perpendicular to the inner wall of the adapter 81, so that the gas rotating along the inner wall of the adapter 81 can be directly blocked by the baffle 82 without rotating along the baffle 82.
In addition, because the gas rotation potential energy of the air inlet pipeline 2 close to the axis thereof is small, the gas rotation potential energy of the air inlet pipeline 2 at the axis can be directly ignored, and therefore, an obstacle does not need to be arranged at the axis of the air inlet pipeline 2 to block the gas at the axis. Accordingly, in order to reduce the resistance of the outside air entering the compressor 1, a gap may be provided between the ends of the at least two inner baffles 82 far from the inner wall of the connecting pipe 81 on the premise that the number of the inner baffles 92 is set to be at least two, so as to reduce the resistance of the air entering the compressor 1. Through the setting of the clearance between two piece at least interior baffles 82, the outside air that gets into in the inlet pipe 2 can be from leading-in to the outlet pipe 3 in the clearance department between two piece at least interior baffles 82, and can not lead to the fact the hindrance to the entering of outside air.
In a possible embodiment, referring to fig. 5, at least one end of the two inner baffles 82 far away from the inner wall of the adapter 81 is connected to each other, for example, in the case that the number of the inner baffles 82 is four, the end of the inner baffle 82 far away from the inner wall of the adapter 81 can be connected to each other to form a cross-shaped structure as shown in fig. 5.
In the embodiment, the gas rotation potential energy of the gas inlet pipeline 2 close to the axis is small, so that the gas rotation potential energy of the gas inlet pipeline 2 at the axis can be directly ignored; however, if the rotational potential energy of the gas at the axis is not neglected, the ends of the inner baffles 82 far from the inner wall of the connection pipe 81 can be connected to each other to block the rotating gas at the axis of the gas inlet pipeline 2, thereby further reducing the surge noise.
In a possible embodiment, referring to fig. 1, further comprising: a turbine 5, an exhaust manifold 6, an EGR valve 7, and a control device;
the turbine 5 is coaxially connected with the compressor 1 to form a supercharger;
one end of the exhaust manifold 6 is connected to the engine block 4, and the other end of the exhaust manifold 6 is connected to the turbine 5;
the EGR valve 7 is connected between the outlet gas line 3 and the exhaust manifold 6;
the control device is used for judging whether the time of the travel of the accelerator pedal in a preset range is less than a preset time value or not; if so, controlling the valve 7 of the EGR valve to be opened so as to deflate the gas in the air inlet pipeline, otherwise, controlling the valve 7 of the EGR valve to be closed, wherein the control device can be a microprocessor and can also be arranged on a traveling computer, and the control device can be electrically connected with the EGR valve 7 and is used for controlling the valve 7 of the EGR valve to be opened and closed.
In the embodiment, the supercharger is an air pump which works by using residual energy in exhaust gas of the engine, and is used for leading more outside air into a combustion chamber of the engine to be mixed and combusted with more fuel oil, so that the purpose of improving the power of the engine is achieved, and meanwhile, when a driver steps on an accelerator, the power of the engine can be improved through the supercharger. The supercharger comprises a gas compressor 1 and a turbine 5, wherein impellers are arranged in the gas compressor 1 and the turbine 5 and are coaxially connected, so that the impellers in the gas compressor 1 can drive the impellers in the turbine 5 to synchronously rotate.
The preset range may be a time elapsed from the start of the calculation of more than 90% of the accelerator pedal stroke to the end of the calculation of less than 30% of the accelerator pedal stroke, for example, in a preset range from 100% of the accelerator pedal stroke to 0% of the accelerator pedal stroke, or from 95% of the accelerator pedal stroke to 10% of the accelerator pedal stroke, and the preset range is not limited herein.
The principle of the EGR valve 7 bleed includes: when the gas rotating at a high speed flows back into the air inlet pipeline 2 from the air outlet pipeline 3, the air which should enter the air outlet pipeline 3 is driven to reversely flow, the sound of the separation of the gas and the impeller of the air compressor 1 is generated, and the surge noise is also generated, at the moment, whether the time of the travel of the accelerator pedal within the preset range is smaller than the preset time value can be judged, if so, the EGR valve 7 is opened, so that the high-pressure gas in the air outlet pipeline 3 can flow into the exhaust manifold 6 through the pipeline where the EGR valve 7 is located, and finally, the gas is discharged through the turbine 5.
Through this application set up choke device on air inlet pipe 2, can reduce surge noise, in addition open EGR valve 7 and carry out the operation of disappointing, can make the driver loosen the throttle suddenly on high gear, also can not appear surge noise to surge noise has been avoided.
In addition, the preset time value may be 0.5S, 0.6S, 0.7S, and the like, and when the preset time value is greater than the preset time value, the EGR valve 7 is closed, and a certain pressure is kept in the gas outlet pipeline 3, so as to reduce the pressure build-up time of the compressor 1. For example, after the driver releases the throttle, the EGR valve 7 is opened for air release within a time value smaller than a preset time value, the EGR valve 7 is closed to store the gas pressure in the gas outlet pipeline 3 after the time value is larger than the preset time value, and during the subsequent operation of the throttle, the pressure build-up time of the compressor 1 can be reduced because a certain air pressure is stored in the gas outlet pipeline 3.
Example two
Based on the same inventive concept, another embodiment of the present application provides an engine turbine system, which comprises the device in the device for preventing the surge of the throttle valve, provided by the first embodiment of the present application.
Specifically, an engine turbine system includes: the system comprises a compressor 1, a turbine 5, an air inlet pipeline 2, an air outlet pipeline 3, an exhaust manifold 6, an engine body 4, an EGR valve 7 and a choke device.
The air inlet pipeline 2 is connected with the air compressor 1 and is used for introducing external air into the air compressor 1;
the air outlet pipeline 3 is connected between the air compressor 1 and the engine body 4 and is used for transmitting air input in the air compressor 1 into the engine body 4;
an exhaust manifold 6 is connected between the compressor 1 and the turbine 5 for inputting exhaust gas discharged from the engine body 4 into the turbine 5;
the EGR valve 7 is connected between the gas outlet pipeline 3 and the exhaust manifold 6 and is used for discharging gas remained in the gas outlet pipeline 3 into the exhaust manifold 6 after the EGR valve 7 is opened so as to realize the gas discharge of the gas outlet pipeline 3;
the choke device is arranged in the air inlet pipeline 2 and used for preventing the gas retained in the air outlet pipeline 3 from flowing back to the air inlet pipeline 2 to generate rotary oscillation.
Principle of the turbine system of the engine: judging whether the time of the travel of the accelerator pedal within a preset range is smaller than a preset time value or not, if so, representing the situation that a driver looses the accelerator suddenly, opening the EGR valve 7 to enable high-pressure gas in the gas outlet pipeline 3 to flow into the exhaust manifold 6 through a pipeline where the EGR valve 7 is located, and finally discharging the gas through the turbine 5 to reduce certain surge noise; in addition, the choke device is arranged in the air inlet pipeline 2, certain surge noise can be reduced, and the combination of the air leakage of the EGR valve 7 and the choke device can avoid the surge noise when a driver looses the accelerator suddenly.
EXAMPLE III
Based on the same inventive concept, another embodiment of the present application provides a vehicle including an apparatus for preventing slack door surge as provided in the first embodiment of the present application or including an engine turbine system as provided in the second embodiment of the present application.
For the device embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one of skill in the art, embodiments of the present application may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The device for preventing surge of a throttle valve, the turbine system of an engine and a vehicle provided by the application are described in detail, and the principle and the implementation mode of the application are explained by applying specific examples, and the description of the above examples is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. An apparatus for preventing surge of a choke, comprising: the engine comprises an engine body, a gas compressor and a choke device;
one end of the air compressor is connected with an air inlet pipeline used for inputting outside air, and the other end of the air compressor is connected with an air outlet pipeline connected with the engine body;
the choke device is used for preventing the gas retained in the gas outlet pipeline from flowing back to the gas inlet pipeline and generating rotary oscillation.
2. The apparatus of claim 1, further comprising: a turbine, an exhaust manifold, an EGR valve and a control device;
the turbine is coaxially connected with the gas compressor to form a supercharger;
one end of the exhaust manifold is connected with the engine body, and the other end of the exhaust manifold is connected with the turbine;
the EGR valve is connected between the gas outlet pipeline and the exhaust manifold;
the control device is used for judging whether the time of the travel of the accelerator pedal in a preset range is less than a preset time value or not; and if so, controlling the EGR valve to be opened so as to deflate the gas in the air inlet pipeline.
3. The apparatus of claim 2, wherein the control apparatus is further configured to:
and if not, controlling the EGR valve to close.
4. The apparatus of claim 2, wherein the predetermined range is 90% accelerator pedal travel to 30% accelerator pedal travel.
5. The apparatus of claim 2, wherein the preset time value is 0.5 s.
6. The apparatus of any of claims 1 to 5, wherein the choke device comprises: the connecting pipe and the inner baffle plate;
the connecting pipe is arranged between the compressor and the air inlet pipeline and is used for communicating the compressor with the air inlet pipeline;
the inner baffle is arranged on the inner wall of the connecting pipe, and the length direction of the inner baffle is consistent with the axial direction of the connecting pipe and used for preventing airflow from rotating.
7. The apparatus of claim 6 wherein said inner baffles are arranged in at least two pieces with a gap therebetween for reducing drag of air into said compressor.
8. The apparatus of claim 7 wherein at least two of said inner baffles are interconnected at an end remote from the inner wall of said nozzle.
9. An engine turbine system including an arrangement for preventing surge of a choke as claimed in any one of claims 2 to 8.
10. A vehicle comprising an arrangement for preventing pine door surge as claimed in any one of claims 1 to 7 or comprising an engine turbine system as claimed in claim 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010990403.0A CN114198225A (en) | 2020-09-18 | 2020-09-18 | Device for preventing surge of throttle valve, engine turbine system and vehicle |
| PCT/CN2021/119283 WO2022057917A1 (en) | 2020-09-18 | 2021-09-18 | Device for preventing surge during release of accelerator, engine turbine system, and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010990403.0A CN114198225A (en) | 2020-09-18 | 2020-09-18 | Device for preventing surge of throttle valve, engine turbine system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114198225A true CN114198225A (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010990403.0A Pending CN114198225A (en) | 2020-09-18 | 2020-09-18 | Device for preventing surge of throttle valve, engine turbine system and vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114198225A (en) |
| WO (1) | WO2022057917A1 (en) |
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| Publication number | Publication date |
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| WO2022057917A1 (en) | 2022-03-24 |
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