CN113898458A - Diesel engine two-stage turbine series self-circulation pulse supercharging device and control method - Google Patents
Diesel engine two-stage turbine series self-circulation pulse supercharging device and control method Download PDFInfo
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- CN113898458A CN113898458A CN202111353768.3A CN202111353768A CN113898458A CN 113898458 A CN113898458 A CN 113898458A CN 202111353768 A CN202111353768 A CN 202111353768A CN 113898458 A CN113898458 A CN 113898458A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005474 detonation Methods 0.000 claims abstract description 75
- 230000002000 scavenging effect Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 29
- 238000002485 combustion reaction Methods 0.000 abstract description 14
- 230000004044 response Effects 0.000 abstract description 7
- 239000002912 waste gas Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000001668 ameliorated effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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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
- F02B37/013—Engines characterised by provision of pumps driven at least for part of the time by exhaust with exhaust-driven pumps arranged in series
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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
- F02K—JET-PROPULSION PLANTS
- F02K7/00—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof
- F02K7/02—Plants in which the working fluid is used in a jet only, i.e. the plants not having a turbine or other engine driving a compressor or a ducted fan; Control thereof the jet being intermittent, i.e. pulse-jet
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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
Abstract
The invention provides a diesel engine two-stage turbine series self-circulation pulse supercharging device and a control method, wherein the supercharging device comprises a main gas compressor, a high-pressure stage turbine, a low-pressure stage turbine, a pulse gas inlet gas compressor and a pulse detonation tube; the air filter is connected with the engine through the main air compressor, the air inlet intercooler and the air inlet main pipe in sequence, the engine is connected with the high-pressure stage turbine through the exhaust main pipe, the high-pressure stage turbine is connected with the low-pressure stage turbine, the low-pressure stage turbine is connected with the main air compressor, a bypass valve is connected beside the high-pressure stage turbine in parallel, the high-pressure stage turbine is connected with the pulse air inlet compressor, and the pulse air inlet compressor is connected with the exhaust main pipe through the first electromagnetic valve, the pulse detonation pipe and the second electromagnetic valve in sequence. Two turbines are connected in series, so that the two compressors supply air to the diesel engine combustion chamber and the pulse detonation combustion chamber respectively, the energy of waste gas is fully utilized, the matching design of a turbocharger is optimized, the air inlet pressure of the engine is improved, and the response characteristic of the engine is accelerated.
Description
Technical Field
The invention relates to the field of engine combustion and control, in particular to a two-stage turbine series self-circulation pulse supercharging device and a control method for a diesel engine.
Background
The traditional pressurization technology has the problems of long pressurization response time and poor pressurization effect in plateau areas. These problems can be ameliorated by using knock boosting techniques. Compared with Diesel isobaric combustion, the cyclic pulse detonation combustion has the advantages of high cyclic heat efficiency, large unit thrust-weight ratio, self-pressurization in the combustion process and the like, and is shown in figure 1.
Under the normal working condition, an inlet valve of a Pulse Detonation combustion chamber (PDC for short) is closed, and the diesel engine works normally. When the diesel engine operates under a small load, the output power of the diesel engine is instantly improved, and the acceleration performance of the diesel engine cannot meet the requirement due to the response delay of the exhaust gas turbocharging. At the moment, a valve of the detonation afterburner is opened in advance, a fuel system is controlled to inject fuel, and the technical characteristics of high-speed combustion heat release, constant volume pressure rise and the like of a detonation combustion technology are utilized, so that high-temperature and high-pressure working media are obtained in a very short time, the turbocharger is pushed to rotate quickly, and sufficient air intake charge is provided for the diesel engine. In the existing pulse supercharging technology, the exhaust end of a pulse supercharging detonation pipe is directly connected to an exhaust pipe, and pulse detonation gas and engine exhaust gas are mixed in the exhaust pipe, so that the pressure and the temperature of turbine inlet air are improved, and other pressures at the outlet of a compressor are higher. However, the method has the problem of difficult air intake of the detonation tube, and in the process of scavenging the detonation tube, the pressure of the exhaust tube is higher than that of the detonation tube, so that the detonation tube cannot effectively exhaust waste gas, and continuous detonation inside the pulse detonation tube is difficult. Therefore, it is an urgent problem to develop a two-stage turbine series self-circulation pulse supercharging device and a control method for a diesel engine.
Disclosure of Invention
In view of the problems that the traditional pulse supercharging scavenging is difficult and the continuous and stable detonation cannot be realized, the invention provides a scheme that two turbines are connected in series, the pressure of air inlet of a detonation tube is improved, the natural scavenging of the detonation tube is realized, and the detonation tube can be stably and continuously detonated.
In order to solve the technical problems, the invention adopts the technical scheme that:
a diesel engine two-stage turbine series self-circulation pulse supercharging device comprises a main gas compressor, a high-pressure stage turbine, a low-pressure stage turbine, a pulse gas inlet gas compressor and a pulse detonation tube; the air filter is connected with the air inlet of the main air compressor through a pipeline, the air outlet of the main air compressor is connected with the air intake intercooler through a pipeline, the air intake intercooler is connected with the air inlet of the engine through an air inlet main pipe, the air outlet of the engine is connected with the high-pressure turbine through an air outlet main pipe, the outlet of the high-pressure turbine is connected with the inlet of the low-pressure turbine, and the low-pressure turbine is connected with the main air compressor through a transmission shaft to realize air intake pressurization of the engine. The high-pressure turbine bypass pipeline is connected in parallel, a bypass valve is arranged on the bypass pipeline, the high-pressure turbine is connected with the pulse air inlet compressor through a transmission shaft, the pulse air inlet compressor is connected with the pulse detonation pipe through a first connecting pipeline, a first electromagnetic valve is arranged on the first connecting pipeline, an exhaust port of the pulse detonation pipe is connected with an exhaust main pipe through a second connecting pipeline, and a second electromagnetic valve is arranged on the second connecting pipeline.
Furthermore, the device also comprises an ECU (electronic control Unit), wherein the ECU is electrically connected with the first electromagnetic valve, the second electromagnetic valve, the bypass valve and the fuel injector and the spark plug in the pulse detonation tube respectively.
Furthermore, one end of the bypass pipeline is connected between the exhaust main pipe and the high-pressure stage turbine, and the other end of the bypass pipeline is connected between the high-pressure stage turbine and the low-pressure stage turbine.
A control method of a diesel engine two-stage turbine series self-circulation pulse supercharging device comprises the following steps:
in the first preparation stage, after the engine is started or the load factor of the engine is increased from 0-10% low load to 70-80% high load, the ECU judges that the intake pressure needs to be increased to increase the intake flow.
In the second step of pressurization, the ECU controls the unit to control the bypass valve to close, the first electromagnetic valve and the second electromagnetic valve to open, so that part of compressed air enters the pulse detonation tube, meanwhile, the ECU controls the unit to control the oil injector in the pulse detonation tube to inject oil, the first electromagnetic valve is controlled to close after scavenging is finished, the second electromagnetic valve is kept open, detonation occurs in the pulse detonation tube, mixed gas of high-temperature high-pressure gas and engine exhaust is discharged to the high-pressure turbine, the temperature and the pressure in front of the low-pressure turbine are further improved, the outlet pressure of the main compressor is further improved, and the torque response time of the engine is shortened.
And in the third separation stage, because the pulse air inlet compressor does not need to operate under partial working conditions, when the pulse supercharging device is separated or does not work, the bypass valve is opened, the first electromagnetic valve and the second electromagnetic valve at two ends of the pulse detonation tube are closed, and the pulse supercharging device has no influence on the engine.
The existing pulse detonation device requires that the pressure of the intake air is not lower than the pressure of the exhaust end, which is a challenge to the realization of the pulse detonation pressurization. Compared with the prior art, the diesel engine two-stage turbine series self-circulation pulse supercharging device and the control method have the following advantages: in order to realize stable work of pulse detonation pressurization, the air inlet pressure of the pulse detonation tube needs to be ensured to be large enough, so that an independent turbocharger is arranged in the air inlet system of the pulse detonation tube, the pressure of the pulse detonation pressurization can be quickly and accurately adjusted, meanwhile, the air inlet of the pulse detonation tube is independent of the air inlet of the engine, and the influence of the pulse detonation pressurization system on the engine is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a T-S plot of an ideal knock cycle and an ideal isobaric cycle;
FIG. 2 is a schematic diagram of an engine and PDC coupling system arrangement of the present invention;
FIG. 3 is a diagram of a PDC apparatus layout based on multiple injection regimes;
FIG. 4 is a graph comparing intake air pressure values into engine cylinders without and with the present apparatus.
Description of reference numerals:
1. an engine; 2. an intake manifold; 3. an exhaust manifold; 4. an air intake intercooler; 5. a first solenoid valve; 6. a pulse detonation tube; 7. a main compressor; 8. a low pressure stage turbine; 9. a pulse air inlet compressor; 10. a high pressure stage turbine; 11. an air filter; 12. an ECU control unit; 13. a second solenoid valve; 14. bypass valve
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
PDC has been greatly developed with its advantages of high thermal efficiency and high thrust-weight ratio. The device is based on detonation combustion using gasoline. The component positions are shown in fig. 3, and the control parameters are shown in table 1 below.
TABLE 1PDC devices control parameters
As shown in fig. 2, the two-stage turbine series self-circulation pulse supercharging device for the diesel engine comprises a main compressor 7, a high-pressure stage turbine 10, a low-pressure stage turbine 8, a pulse air inlet compressor 9 and a pulse detonation tube 6. The air filter 11 is connected with an air inlet of the main compressor 7 through a pipeline, an air outlet of the main compressor 7 is connected with the air intake intercooler 4 through a pipeline, the air intake intercooler 4 is connected with an air inlet of the engine 1 through the air intake manifold 2, an air outlet of the engine 1 is connected with the high-pressure stage turbine 10 through the air exhaust manifold 3, an outlet of the high-pressure stage turbine 10 is connected with an inlet of the low-pressure stage turbine 8, and the low-pressure stage turbine 8 is connected with the main compressor 7 through a transmission shaft, so that the air intake pressurization of the engine is realized. A bypass pipeline is connected in parallel beside the high-pressure stage turbine 10, one end of the bypass pipeline is connected between the exhaust main pipe 3 and the high-pressure stage turbine 10, the other end of the bypass pipeline is connected between the high-pressure stage turbine 10 and the low-pressure stage turbine 8, a bypass valve 14 is arranged on the bypass pipeline, the high-pressure stage turbine 10 is connected with a pulse air inlet compressor 9 through a transmission shaft, the pulse air inlet compressor 9 is connected with a pulse detonation pipe 6 through a first connecting pipeline, a first electromagnetic valve 5 is arranged on the first connecting pipeline, an exhaust port of the pulse detonation pipe 6 is connected with the exhaust main pipe 3 through a second connecting pipeline, and a second electromagnetic valve 13 is arranged on the second connecting pipeline.
In order to better realize the function of the device, the device also comprises an ECU (electronic control Unit) 12, wherein the ECU 12 is respectively and electrically connected with the first electromagnetic valve 5, the second electromagnetic valve 13, the bypass valve 14 and the fuel injector and the spark plug in the pulse detonation tube 6.
The ECU control unit 12 used is self-calibrating and solder-wired (e.g., may be a unified Wise 15 from china technologies) manufactured by market PCB board. The air inlet pipeline for connection is consistent with an air inlet common aluminum pipe of the engine, and the exhaust pipeline for connection is consistent with a common iron pipe of an engine exhaust pipe.
The air current trend when this device uses is as follows: the air inlet of the engine 1 is pressurized by an air filter 11 and a main air compressor 7, enters the engine 1 through an air inlet intercooler 4 and an air inlet header pipe 2 to participate in engine combustion and work, enters an exhaust header pipe 3 through an exhaust valve and pushes a low-pressure stage turbine 8 (at the moment, a bypass valve 14 is in an open state), and drives the main air compressor 7 to work. When the bypass valve 14 is closed, the high-pressure stage turbine 10 can drive the pulse air inlet compressor 9 to compress air to supply air for the pulse detonation tube 6. The gas enters a pulse detonation tube 6 after passing through a first electromagnetic valve 5 controlled by an ECU 12. In the scavenging process in the pulse detonation tube 6, the ECU control unit 12 controls the oil injector in the pulse detonation tube 6 to inject oil, and uses a spark plug to ignite after scavenging is completed, high-temperature and high-pressure gas is generated in the pulse detonation tube 6, the high-temperature and high-pressure gas enters the exhaust main pipe 3 through the second electromagnetic valve 13, and mixed gas of the high-temperature and high-pressure gas and exhaust gas of the engine is discharged to the high-pressure turbine 10, so that the temperature and the pressure in front of the low-pressure turbine 8 are increased, and the pressure of the intake gas of the engine is increased. The whole pulse supercharging system independently admits air, has little influence on the engine, and can rapidly improve the admission pressure of the engine simultaneously, so that the torque response time of the engine is shorter.
Under different operating conditions of the engine, the ECU 12 is used for adjusting the switch sizes of the first electromagnetic valve 5, the second electromagnetic valve 13 and the bypass valve 14, so that whether the pulse detonation pressurization system is connected to work or not and the air inflow of a pulse detonation tube can be controlled, and the ECU 12 is used for controlling the oil injection quantity and the ignition time to change the detonation frequency and the power of the pulse pressurization.
A control method of a diesel engine two-stage turbine series self-circulation pulse supercharging device comprises the following steps:
in the first preparatory phase, after the engine 1 is started or the load factor demand of the engine 1 is suddenly increased (for example, the load factor of the engine is increased from 0% -10% low load to 70% -80% high load, which is a typical load acceleration condition), the ECU control unit 12 judges that the intake pressure needs to be increased to increase the intake air flow rate.
In the second step of pressurization, the ECU control unit 12 controls the bypass valve 14 to close and the first electromagnetic valve 5 and the second electromagnetic valve 13 to open, so that part of the compressed air enters the pulse detonation tube 6, meanwhile, the ECU control unit 12 controls the oil injector in the pulse detonation tube 6 to inject oil, and after scavenging is finished, the ECU control unit 12 ignites and controls the first electromagnetic valve 5 to close, the second electromagnetic valve 13 keeps open, so that detonation occurs in the pulse detonation tube 6, mixed gas of high-temperature high-pressure gas and engine exhaust gas is discharged to the high-pressure stage turbine 10, and then the temperature and the pressure in front of the low-pressure stage turbine 8 are increased, so that the outlet pressure of the main compressor 7 is further increased, the torque response time of the engine is shortened, and the specific operation time is shown in table 1.
And in the third separation stage, because the pulse air inlet compressor 9 does not need to operate under partial working conditions, when the pulse supercharging system is separated or does not work, the bypass valve 14 is opened, and the first electromagnetic valve 5 and the second electromagnetic valve 13 at the two ends of the pulse detonation tube 6 are closed, at the moment, the gas path of the first electromagnetic valve 5, the pulse detonation tube 6 and the second electromagnetic valve 13 is in a non-conduction state, and the pulse supercharging device has no influence on the engine.
The engine is used as an initial state when running in an idling state at this time, and the engine is switched on to work under the condition of sudden acceleration. The following parameters in table 2 were selected as the initial engine state parameters:
TABLE 2 initial conditions of the Engine
When the engine suddenly accelerates, the pulse supercharging system is connected, the working mode of the pulse supercharging system is cyclic pulse, and the three processes of mixed gas filling, ignition and detonation gas discharge are divided in each cycle of the pulse. In the mixed gas filling stage, the ECU 12 controls the first electromagnetic valve 5 at the air inlet end of the pulse detonation tube 6 to be opened, the pulse air inlet compressor 9 compresses air to enter the pulse detonation tube 6, and residual waste gas in the pulse detonation tube 6 is pushed away. In the intermediate stage of the intake, the ECU control unit 12 controls the injector of the pre-chamber of the pulse detonation tube 6 to inject oil, mixing with the air inside the pulse detonation tube 6. In the ignition and detonation stage, the ECU 12 controls a spark plug inside the pulse detonation tube 6 to ignite, and the mixed gas is detonated and combusted and is rapidly discharged to push the exhaust turbine to do work.
The pulse pressurization access effect is as follows:
and (4) performing simulation by using GT-Power, stably operating the engine to an idle speed in 0-5s, increasing the oil feeding amount and switching in pulse pressurization in the 5 s. After 9 seconds, the pulse pressurization is cut off, and the influence of the opening and the closing of the pulse pressurization on the whole system is researched. When the pulse supercharging is connected, the air inlet pressure of the engine is rapidly increased, the pressure of the outlet of the main compressor is shown in figure 4, the pulse supercharging is started within 5 seconds, the PDC starts to inlet air, the pulse supercharging starts to output force, the pressure of the outlet of the main compressor rapidly rises, the common supercharging needs 9.5 seconds to be stabilized at 1.9bar for air inlet, and the pulse supercharging only needs 1.2 seconds when the air inlet reaches 1.9 bar.
The technical scheme is that the pulse detonation combustion device and the control method are based on an injection mode of premixed air inlet and in-cylinder direct injection coupling, two turbines are connected in series at the same time, and two gas compressors are used for supplying gas to a diesel engine combustion chamber and a pulse detonation combustion chamber respectively, so that the exhaust gas energy can be fully utilized, the matching design of a turbocharger is optimized, the air inlet pressure of an engine is rapidly improved, and the response characteristic of the engine is accelerated.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. The utility model provides a diesel engine two-stage turbine series self-loopa pulse supercharging device which characterized in that: the device comprises a main compressor, a high-pressure stage turbine, a low-pressure stage turbine, a pulse air inlet compressor and a pulse detonation tube; the air filter is connected with an air inlet of the main air compressor through a pipeline, an air outlet of the main air compressor is connected with an air intake intercooler through a pipeline, the air intake intercooler is connected with an air inlet of an engine through an air inlet main pipe, an air outlet of the engine is connected with the high-pressure turbine through an air outlet main pipe, an outlet of the high-pressure turbine is connected with an inlet of the low-pressure turbine, the low-pressure turbine is connected with the main air compressor through a transmission shaft, a bypass pipeline is connected beside the high-pressure turbine in parallel, a bypass valve is arranged on the bypass pipeline, the high-pressure turbine is connected with the pulse air intake compressor through a transmission shaft, the pulse air intake compressor is connected with the pulse detonation pipe through a first connecting pipeline, a first electromagnetic valve is arranged on the first connecting pipeline, and an air outlet of the pulse detonation pipe is connected with the air outlet main pipe through a second connecting pipeline, and a second electromagnetic valve is arranged on the second connecting pipeline.
2. The diesel engine two-stage turbine series self-circulation pulse supercharging device according to claim 1, characterized in that: the device also comprises an ECU (electronic control Unit) which is electrically connected with the first electromagnetic valve, the second electromagnetic valve, the bypass valve and the fuel injector and the spark plug in the pulse detonation tube respectively.
3. The diesel engine two-stage turbine series self-circulation pulse supercharging device according to claim 1 or 2, characterized in that: one end of the bypass pipeline is connected between the exhaust main pipe and the high-pressure turbine, and the other end of the bypass pipeline is connected between the high-pressure turbine and the low-pressure turbine.
4. A control method of a diesel engine two-stage turbine series self-circulation pulse supercharging device is characterized by comprising the following steps:
in the first step of preparation, when the engine is started or the load factor of the engine is increased from 0% -10% to 70% -80%, the ECU judges that the air inlet pressure needs to be increased so as to improve the air inlet flow;
in the second step of pressurization, the ECU controls the unit to control the bypass valve to close, the first electromagnetic valve and the second electromagnetic valve to open so that compressed air enters the pulse detonation tube, meanwhile, the ECU controls the unit to control the oil injector in the pulse detonation tube to inject oil, the first electromagnetic valve is controlled to close after scavenging is finished, the second electromagnetic valve is kept open, detonation occurs in the pulse detonation tube, mixed gas of high-temperature high-pressure gas and engine exhaust gas is discharged to the high-pressure turbine, and then the temperature and the pressure in front of the low-pressure turbine are improved;
and in the third separation stage, when the pulse supercharging device is separated or does not work, the bypass valve is opened, the first electromagnetic valve and the second electromagnetic valve at two ends of the pulse detonation pipe are closed, and the pulse supercharging device has no influence on the engine.
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| CN202111353768.3A CN113898458A (en) | 2021-11-08 | 2021-11-08 | Diesel engine two-stage turbine series self-circulation pulse supercharging device and control method |
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| CN202111353768.3A CN113898458A (en) | 2021-11-08 | 2021-11-08 | Diesel engine two-stage turbine series self-circulation pulse supercharging device and control method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2038810A1 (en) * | 1970-08-05 | 1972-02-10 | Bayerische Motoren Werke Ag | Internal combustion engine with a charging fan, in particular an exhaust gas turbocharger |
| GB1291030A (en) * | 1970-05-05 | 1972-09-27 | France Etat | Improvements in methods of supercharging a diesel engine, in supercharged diesel engines, and in supercharging units for diesel engines |
| CN1160434A (en) * | 1994-08-25 | 1997-09-24 | 詹姆斯·内维尔·兰德尔 | Turbocharged internal combustion engine arrangement |
| JP2013124558A (en) * | 2011-12-13 | 2013-06-24 | Nippon Soken Inc | Control device for internal combustion engine with supercharger |
| CN104033286A (en) * | 2014-06-04 | 2014-09-10 | 西安热工研究院有限公司 | High-frequency impulse knocking combustion power plant |
| CN216278137U (en) * | 2021-11-08 | 2022-04-12 | 天津市津聿动力科技有限公司 | Diesel engine two-stage turbine series self-circulation pulse supercharging device |
-
2021
- 2021-11-08 CN CN202111353768.3A patent/CN113898458A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1291030A (en) * | 1970-05-05 | 1972-09-27 | France Etat | Improvements in methods of supercharging a diesel engine, in supercharged diesel engines, and in supercharging units for diesel engines |
| DE2038810A1 (en) * | 1970-08-05 | 1972-02-10 | Bayerische Motoren Werke Ag | Internal combustion engine with a charging fan, in particular an exhaust gas turbocharger |
| CN1160434A (en) * | 1994-08-25 | 1997-09-24 | 詹姆斯·内维尔·兰德尔 | Turbocharged internal combustion engine arrangement |
| JP2013124558A (en) * | 2011-12-13 | 2013-06-24 | Nippon Soken Inc | Control device for internal combustion engine with supercharger |
| CN104033286A (en) * | 2014-06-04 | 2014-09-10 | 西安热工研究院有限公司 | High-frequency impulse knocking combustion power plant |
| CN216278137U (en) * | 2021-11-08 | 2022-04-12 | 天津市津聿动力科技有限公司 | Diesel engine two-stage turbine series self-circulation pulse supercharging device |
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