CN104632357A - Two-stage supercharging system of internal combustion engine - Google Patents
Two-stage supercharging system of internal combustion engine Download PDFInfo
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- CN104632357A CN104632357A CN201410841845.3A CN201410841845A CN104632357A CN 104632357 A CN104632357 A CN 104632357A CN 201410841845 A CN201410841845 A CN 201410841845A CN 104632357 A CN104632357 A CN 104632357A
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Abstract
The invention provides a two-stage supercharging system of an internal combustion engine. The two-stage supercharging system comprises a turbocharging system and an organic Rankine cycle supercharging system. The turbocharging system comprises a turbocharger. The organic Rankine cycle supercharging system comprises an organic working medium pump, an evaporator, an expansion machine, a condenser and a compressor, wherein the evaporator receives a liquid organic working medium output by the organic working medium pump and is communicated with the turbocharger to receive waste gas exhausted by the turbocharger, and the liquid organic working medium received by the evaporator absorbs heat of the waste gas received by the evaporator so that an overheated gaseous organic working medium with pressure can be output; the expansion machine receives the overheated gaseous organic working medium with pressure and is driven by the overheated gaseous organic working medium with pressure to do work and output exhaust gas; the condenser cools the exhaust gas; the compressor is coaxially connected with the expansion machine, the expansion machine does work to drive the compressor to compress feed air input into the compressor and output the compressed air. Compressed air output by the turbocharger is used by all air cylinders of the internal combustion engine after being cooled, and the compressed air output by the compressor is used by all the air cylinders of the internal combustion engine after being cooled.
Description
Technical field
The present invention relates to field of internal combustion engine, particularly relate to a kind of two-step supercharging system of internal-combustion engine.
Background technique
Exhaust gases of internal combustion engines energy accounts for 35% of automobile total energy consumption rate, and the recovery combustion motor system effectiveness impact of tail gas energy is very large.Internal combustion engine turbocharging system is made up of turbo machine and air compressor.The tail gas with kinetic force drives turbo machine to rotate, and turbo machine drives compressor work to realize supercharging air.
Turbosupercharger operating mode is limited to tail gas energy.If tail gas energy is too low, then turbocharger supercharged effect is unsatisfactory.When engine operating condition changes, turbosupercharger has response time, i.e. a hesitation.In order to overcome the above problems, existing turbosupercharger generally makes full use of the kinetic force of tail gas and a part of waste heat energy by two-stage turbocharger.But be limited to follow-up vent gas treatment, tail gas energy can not be fully used.
Summary of the invention
In view of Problems existing in background technique, the object of the present invention is to provide a kind of two-step supercharging system of internal-combustion engine, it can make full use of kinetic force and the waste heat energy of tail gas, and improves the Economy of fuel of internal combustion engine combustion gas.
Another object of the present invention is to the two-step supercharging system providing a kind of internal-combustion engine, it can improve the pressure ratio of internal-combustion engine.
Another object of the present invention is the two-step supercharging system providing a kind of internal-combustion engine, and it can improve the comprehensive utilization ratio of internal-combustion engine total energy.
To achieve these goals, the invention provides a kind of two-step supercharging system of internal-combustion engine, internal-combustion engine comprises at least one cylinder, each cylinder comprises at least one intake valve and at least one exhaust valve, and the two-step supercharging system of described internal-combustion engine comprises turbo charge system and organic Rankine bottoming cycle pressurization system.Turbo charge system comprises: turbosupercharger, one end is communicated with each exhaust valve of each cylinder of internal-combustion engine, and the kinetic force of the waste gas that turbosupercharger utilizes each exhaust valve of each cylinder of internal-combustion engine to discharge carries out compression also output squeezing air and combustion gas to the air supply entered in turbosupercharger.Organic Rankine bottoming cycle pressurization system comprises: organic working medium pump, is communicated with outside organic working medium liquid container, the liquid organic working medium in organic working medium liquid container is exported; Vaporizer, be arranged on the upstream of organic working medium pump and be communicated with organic working medium pump to receive the liquid organic working medium of organic working medium pump output, and the waste gas that the turbosupercharger being communicated with turbo charge system is discharged to receive turbosupercharger, thus the waste-gas heat that receives of the liquid organic working medium absorption vaporizer that vaporizer receives and liquid organic working medium are evaporated and are exported as overheated gaseous state organic working medium with pressure; Decompressor, is arranged on the downstream of vaporizer and is communicated with vaporizer to receive the gaseous state organic working medium overheated with pressure of vaporizer output and done work by overheated gaseous state organic working medium driving with pressure and export the weary gas after overheated gaseous state organic working medium acting with pressure; Condenser, be arranged on the downstream of decompressor and be communicated with decompressor and be communicated with described liquid organic working medium liquid container, the weary gas exported to make decompressor is cooled to liquid organic working medium and liquid organic working medium is recovered to organic working medium liquid container; Compressor, is coaxially connected with decompressor, drives the feeding air of compressor to input compressor compress and export by pressurized air via decompressor acting; Wherein, receive pressurized air that turbosupercharger exports for each cylinder of internal-combustion engine after cooling, compressor output by pressurized air each cylinder for internal-combustion engine after lowering the temperature.
Beneficial effect of the present invention is as follows:
The waste gas residual heat that internal-combustion engine is discharged by organic Rankine bottoming cycle pressurization system can be converted into kinetic force, drives compressor to compress air via the acting of organic working medium decompressor.When system engine conditions is in the large load condition of low speed, when turbo charge system pressurized effect is not obvious, the waste heat energy of waste gas can be converted into kinetic force by organic Rankine bottoming cycle pressurization system, drive compressor to air compressing, expand the Applicable scope of supercharging operating mode, reduce the hesitation of internal combustion engine turbocharging system, improve the power performance of internal-combustion engine low-speed running.And when the turbo charge system of internal-combustion engine is in normal duty working state, by reclaiming the waste heat energy of waste gas, improve compressed-air actuated pressure ratio, promote the supercharging air power capacity of the two-step supercharging system of the Economy system internal-combustion engine of the present invention of fuel of internal combustion engine combustion gas all from exhaust energy, achieve the comprehensive utilization of the waste heat energy of waste gas, overbottom pressure energy, improve the comprehensive utilization ratio of internal-combustion engine total energy.
The two-step supercharging system architecture of internal-combustion engine of the present invention is compact, and internal-combustion engine has good practicability.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of an embodiment of two-step supercharging system according to internal-combustion engine of the present invention;
Fig. 2 is the schematic diagram of another embodiment of two-step supercharging system according to internal-combustion engine of the present invention;
Fig. 3 is the schematic diagram of another embodiment of two-step supercharging system according to internal-combustion engine of the present invention;
Fig. 4 is the schematic diagram of another embodiment of two-step supercharging system according to internal-combustion engine of the present invention.
Wherein, description of reference numerals is as follows:
1 turbo charge system 26 organic Rankine bottoming cycle pressurization system intercooler
11 turbosupercharger 27 organic Rankine bottoming cycle bypass systems
12 turbo charge system intercooler 28 electric valves
13 pressure piping 3 internal-combustion engines
2 organic Rankine bottoming cycle pressurization system 31 cylinders
21 organic working medium pump 311 intake valves
22 vaporizer 312 exhaust valves
23 decompressor 32 bent axles
24 condenser V control valves
25 compressor 4 controllers
5 integral type intercoolers
Embodiment
Describe the two-step supercharging system according to internal-combustion engine of the present invention with reference to the accompanying drawings in detail.
Referring to figs. 1 through Fig. 4, in the two-step supercharging system of internal-combustion engine according to the present invention, internal-combustion engine 3 comprises at least one cylinder 31, each cylinder 31 comprises at least one intake valve 311 and at least one exhaust valve 312, and the two-step supercharging system of described internal-combustion engine comprises turbo charge system 1 and organic Rankine bottoming cycle pressurization system 2.Turbo charge system 1 comprises: turbosupercharger 11, one end is communicated with each exhaust valve 312 of each cylinder 31 of internal-combustion engine 3, and the exhaust energy that turbosupercharger 11 utilizes each exhaust valve 312 of each cylinder 31 of internal-combustion engine 3 to discharge carries out compression also output squeezing air and combustion gas to the air supply entered in turbosupercharger 11.Organic Rankine bottoming cycle pressurization system 2 comprises: organic working medium pump 21, is communicated with outside organic working medium liquid container, the liquid organic working medium in organic working medium liquid container is exported; Vaporizer 22, be arranged on the upstream of organic working medium pump 21 and be communicated with organic working medium pump 21 to receive the liquid organic working medium of organic working medium pump 21 output, and the waste gas that the turbosupercharger 11 being communicated with turbo charge system 1 is discharged to receive turbosupercharger 11, thus the waste-gas heat that receives of the liquid organic working medium absorption vaporizer 22 that vaporizer 22 receives and liquid organic working medium are evaporated and are exported as overheated gaseous state organic working medium with pressure; Decompressor 23, is arranged on the downstream of vaporizer 22 and is communicated with vaporizer 22 to receive the gaseous state organic working medium overheated with pressure of vaporizer 22 output and done work by overheated gaseous state organic working medium driving with pressure and export the weary gas after overheated gaseous state organic working medium acting with pressure; Condenser 24, be arranged on the downstream of decompressor 23 and be communicated with decompressor 23 and be communicated with described liquid organic working medium liquid container, the weary gas exported to make decompressor 23 is cooled to liquid organic working medium and liquid organic working medium is recovered to organic working medium liquid container; And compressor 25, be coaxially connected with decompressor 23, doing work via decompressor 23 drives the feeding air of compressor 25 to input compressor 25 compress and export by pressurized air.Wherein, receive pressurized air that turbosupercharger 11 exports for each cylinder 31 of internal-combustion engine 3 after cooling, compressor 25 export by pressurized air each cylinder 31 for internal-combustion engine 3 after lowering the temperature.
The waste heat energy of the waste gas that internal-combustion engine 3 is discharged is converted into kinetic force by organic Rankine bottoming cycle pressurization system 2, and doing work via decompressor 23 drives the feeding air of compressor 25 to input compressor 25 to compress.When turbo charge system 1 no-output of internal-combustion engine 3 or low output (such as: engine conditions changes, internal-combustion engine is in the large load condition of low speed) when making turbo charge system 1 pressurized effect not obvious, the waste heat energy that organic Rankine bottoming cycle pressurization system 2 can realize waste gas is converted into the air compressing energy of compressor 25, expand the Applicable scope of supercharging operating mode, (namely the working conditions change of turbosupercharger 11 combustion motor 3 has certain response time to reduce the hesitation of the turbo charge system 1 of internal-combustion engine, can not sync response), improve the power performance of internal-combustion engine low-speed running.And when the turbo charge system 1 of internal-combustion engine 3 is in normal duty working state, by reclaiming the waste heat energy of waste gas, improve the Economy of fuel of internal combustion engine combustion gas
The supercharging air power capacity of the two-step supercharging system of internal-combustion engine of the present invention, all from exhaust energy, achieves the comprehensive utilization of the waste heat energy of waste gas, overbottom pressure energy (i.e. the kinetic force of waste gas), improves the comprehensive utilization ratio of internal-combustion engine total energy.
The two-step supercharging system architecture of internal-combustion engine of the present invention is compact, and supercharging of internal combustion engine has good practicability.
Structure and the concrete setting type of internal-combustion engine 3 are not limited to example shown in the drawings, particularly, internal-combustion engine 3 can adopt six cylinders 31 (to see figures.1.and.2, but be not limited to this, the quantity of cylinder 31 can be determined according to the quantity of the cylinder of actual internal-combustion engine), the setting type of multiple cylinder 31 can adopt array (seeing figures.1.and.2), V-type or horizontally-opposed, camshaft 32 can adopt Single Over Head Camshaft (seeing figures.1.and.2), or employing Dual Over Head Camshaft, each cylinder 31 has four valves, namely two intake valves 311 and two exhaust valves 312 (see figures.1.and.2, but be not limited to this, the quantity of intake valve 311 and exhaust valve 312 can be determined according to actual needs), in other words, those skilled in the art can the structure of combustion motor 3 and concrete setting type be arranged according to actual demand accordingly.
In an embodiment of the two-step supercharging system of internal-combustion engine according to the present invention, with reference to Fig. 1, turbo charge system 1 also can comprise: turbo charge system intercooler 12, one end is communicated in each intake valve 311 of each cylinder 31 of internal-combustion engine 3 and the other end is communicated in the other end of turbosupercharger 11, to receive the pressurized air of turbosupercharger 11 output and to make received pressurized air cooling and the pressurized air output that will lower the temperature, each cylinder 31 for internal-combustion engine 3 uses.Organic Rankine bottoming cycle pressurization system 2 also can comprise: organic Rankine bottoming cycle pressurization system intercooler 26, be arranged on the downstream of compressor 25 and be communicated with compressor 25, with receive compressor 25 export by pressurized air and make receive lowered the temperature by pressurized air and by cooling being exported by pressurized air.Feeding air in the compressor 25 of input organic Rankine bottoming cycle pressurization system 2 is outside air; Organic Rankine bottoming cycle pressurization system intercooler 26 can be communicated in the turbosupercharger 11 of turbo charge system 1, cooling passed into turbosupercharger 11 by pressurized air, using as the described air supply entered in turbosupercharger 11.
In an embodiment of the two-step supercharging system of internal-combustion engine according to the present invention, with reference to Fig. 2, turbo charge system 1 also can comprise: turbo charge system intercooler 12, be communicated with the other end of turbosupercharger 11, to receive the pressurized air of turbosupercharger 11 output and to make received pressurized air cooling and the pressurized air output that will lower the temperature.Organic Rankine bottoming cycle pressurization system 2 also can comprise: organic Rankine bottoming cycle pressurization system intercooler 26, be arranged on the downstream of compressor 25 and one end is communicated with each intake valve 311 that compressor 25 and the other end are communicated with each cylinder 31 of internal-combustion engine 3, with receive compressor 25 export by pressurized air and make receive lowered the temperature by pressurized air and by cooling being exported by pressurized air, each cylinder 31 for internal-combustion engine 3 uses.The air supply of the turbosupercharger 11 of input turbo charge system 1 is outside air; Turbo charge system intercooler 12 is communicated in the compressor 25 of organic Rankine bottoming cycle pressurization system 2, and the pressurized air of cooling passes into the feeding air of compressor 25 as described input compressor 25.
In an embodiment of the two-step supercharging system of internal-combustion engine according to the present invention, with reference to Fig. 3, turbo charge system 1 also can comprise: turbo charge system intercooler 12, be communicated with the other end of turbosupercharger 11, to receive the pressurized air of turbosupercharger 11 output and to make received pressurized air cooling and the pressurized air output that will lower the temperature; And pressure piping 13, one end is communicated in each intake valve 311 that turbo charge system intercooler 12 and the other end are communicated with each cylinder 31 of internal-combustion engine 3.Organic Rankine bottoming cycle pressurization system 2 also can comprise: organic Rankine bottoming cycle pressurization system intercooler 26, be arranged on the downstream of compressor 25 and be communicated with compressor 25, with receive compressor 25 export by pressurized air and make receive lowered the temperature by pressurized air and by cooling being exported by pressurized air.The air supply of the turbosupercharger 11 of input turbo charge system 1 is outside air; Feeding air in the compressor 25 of input organic Rankine bottoming cycle pressurization system 2 is outside air; The output terminal of organic Rankine bottoming cycle pressurization system intercooler 26 can be connected with the output terminal of turbo charge system intercooler 12 and be communicated with pressure piping 13, mixes and pass into pressure piping 13 with the pressurized air making organic Rankine bottoming cycle pressurization system intercooler 26 export the cooling exported with turbo charge system intercooler 12 by pressurized air of cooling.Compared to the embodiment shown in Fig. 1 and Fig. 2, embodiment shown in Fig. 3 can reduce air flow process, affect less on original turbo charge system 1, can improve pressure ratio, the air density of increasing combustion engine firing chamber import and pressure by means of only adjustment organic Rankine bottoming cycle pressurization system 2.Particularly, the flow of waste gas of being discharged by monitoring internal-combustion engine and the operating mode of the turbosupercharger of turbo charge system 1, the flow that the organic working medium of regulation and control organic Rankine bottoming cycle pressurization system 2 enters decompressor 23 with enter the compressor 25 outside air flow that is connected with decompressor 23 to regulate compression ratio, what the compressor 25 of organic Rankine bottoming cycle pressurization system 2 was exported is consistent with the compressed-air actuated status parameter that the turbosupercharger 11 of turbo charge system 1 exports by compressed-air actuated status parameter, and then internal-combustion engine 3 is entered after turbo charge system intercooler 12 and organic Rankine bottoming cycle pressurization system intercooler 26 cooling mixing.In one embodiment, organic Rankine bottoming cycle pressurization system intercooler 26 exports the identical on temperature and pressure with the pressurized air of the cooling that turbo charge system intercooler 12 exports by pressurized air of cooling.
In an embodiment of the two-step supercharging system of internal-combustion engine according to the present invention, with reference to Fig. 4, the two-step supercharging system of described internal-combustion engine also can comprise: integral type intercooler 5, one end be communicated in each intake valve 311 of each cylinder 31 of internal-combustion engine 3 and the other end be communicated in the compressed-air actuated output terminal of turbosupercharger 11 and compressor 25 by compressed-air actuated output terminal, integral type intercooler 5 is entered after what the pressurized air exported to make turbosupercharger 11 and compressor 25 exported mixed by pressurized air, integral type intercooler 5 is by the pressurized air of the mixing after cooling and exported by pressurized air, each cylinder 31 for internal-combustion engine 3 uses.The air supply of the turbosupercharger 11 of input turbo charge system 1 is outside air; Feeding air in the compressor 25 of input organic Rankine bottoming cycle pressurization system 2 is outside air.In one embodiment, it is identical on temperature and pressure by pressurized air that turbosupercharger 11 exports pressurized air and compressor 25 export.
In an embodiment of the two-step supercharging system of internal-combustion engine according to the present invention, referring to figs. 1 through Fig. 4, organic Rankine bottoming cycle pressurization system 2 also can comprise: organic Rankine bottoming cycle bypass system 27, and one end is communicated with the other end between decompressor 23 and vaporizer 22 and is communicated with between decompressor 23 and condenser 24; And electric valve 28, be arranged at organic Rankine bottoming cycle bypass system 27, control the flow of organic Rankine bottoming cycle bypass system 27.The boost load arranged under the different operating modes can mating internal-combustion engine 3 of organic Rankine bottoming cycle bypass system 27, the compression work realizing organic Rankine bottoming cycle pressurization system 2 exports controlled.
In an embodiment of the two-step supercharging system of internal-combustion engine according to the present invention, referring to figs. 1 through Fig. 4, the two-step supercharging system of described internal-combustion engine also can comprise: controller 4, communication connection turbo charge system 1 and organic Rankine bottoming cycle pressurization system 2, control the operation (particularly the corresponding operation controlling each component of turbo charge system 1 and organic Rankine bottoming cycle pressurization system 2) of turbo charge system 1 and organic Rankine bottoming cycle pressurization system 2.Controller 4 can be on-vehicle electronic controller.
In one embodiment, the organic working medium pump 21 of organic Rankine bottoming cycle pressurization system 2 is the variable frequency pump communicated to connect with controller 4.
In an embodiment of the two-step supercharging system of internal-combustion engine according to the present invention, the condenser 24 of organic Rankine bottoming cycle pressurization system 2 can adopt cooling by water or Air flow.But the present invention is not limited thereto, the condenser 24 of organic Rankine bottoming cycle pressurization system 2 also can adopt other types of cooling well known in the art.
Claims (9)
1. the two-step supercharging system of an internal-combustion engine, internal-combustion engine (3) comprises at least one cylinder (31), each cylinder (31) comprises at least one intake valve (311) and at least one exhaust valve (312), and the two-step supercharging system of described internal-combustion engine comprises:
Turbo charge system (1), comprising:
Turbosupercharger (11), one end is communicated with each exhaust valve (312) of each cylinder (31) of internal-combustion engine (3), and the exhaust energy that turbosupercharger (11) utilizes each exhaust valve (312) of each cylinder (31) of internal-combustion engine (3) to discharge carries out compression also output squeezing air and combustion gas to the air supply entered in turbosupercharger (11);
It is characterized in that, the two-step supercharging system of described internal-combustion engine also comprises:
Organic Rankine bottoming cycle pressurization system (2), comprising:
Organic working medium pump (21), is communicated with outside organic working medium liquid container, the liquid organic working medium in organic working medium liquid container is exported;
Vaporizer (22), be arranged on the upstream of organic working medium pump (21) and be communicated with the liquid organic working medium that organic working medium pump (21) exports to receive organic working medium pump (21), and be communicated with turbosupercharger (11) waste gas of discharging to receive turbosupercharger (11) of turbo charge system (1), thus the liquid organic working medium that vaporizer (22) receives absorbs waste-gas heat that vaporizer (22) receives and liquid organic working medium is evaporated and exported as overheated gaseous state organic working medium with pressure;
Decompressor (23), be arranged on vaporizer (22) downstream and be communicated with vaporizer (22) with the gaseous state organic working medium overheated with pressure receiving vaporizer (22) and export and by overheated gaseous state organic working medium with pressure drive do work and export overheated gaseous state organic working medium with pressure do work after weary gas;
Condenser (24), be arranged on the downstream of decompressor (23) and be communicated with decompressor (23) and be communicated with described liquid organic working medium liquid container, be cooled to liquid organic working medium with the weary gas making decompressor (23) export and liquid organic working medium is recovered to organic working medium liquid container; And
Compressor (25), coaxially be connected with decompressor (23), drive the feeding air of compressor (25) to input compressor (25) compress and export by pressurized air via decompressor (23) acting; Wherein, receive turbosupercharger (11) pressurized air that exports each cylinder (31) for internal-combustion engine (3) after cooling, compressor (25) export by pressurized air each cylinder (31) for internal-combustion engine (3) after lowering the temperature.
2. the two-step supercharging system of internal-combustion engine according to claim 1, is characterized in that,
Turbo charge system (1) also comprises:
Turbo charge system intercooler (12), one end is communicated in each intake valve (311) of each cylinder (31) of internal-combustion engine (3) and the other end is communicated in the other end of turbosupercharger (11), to receive pressurized air that turbosupercharger (11) exports and make received pressurized air cooling and the pressurized air of cooling exported, each cylinder (31) for internal-combustion engine (3) uses;
Organic Rankine bottoming cycle pressurization system (2) also comprises:
Organic Rankine bottoming cycle pressurization system intercooler (26), be arranged on the downstream of compressor (25) and be communicated with compressor (25), with receive that compressor (25) exports by pressurized air and make receive lowered the temperature by pressurized air and being exported cooling by pressurized air;
Feeding air in the compressor (25) of input organic Rankine bottoming cycle pressurization system (2) is outside air;
Organic Rankine bottoming cycle pressurization system intercooler (26) is communicated in the turbosupercharger (11) of turbo charge system (1), cooling passed into turbosupercharger (11) by pressurized air, using as the described air supply entered in turbosupercharger (11).
3. the two-step supercharging system of internal-combustion engine according to claim 1, is characterized in that,
Turbo charge system (1) also comprises:
Turbo charge system intercooler (12), is communicated with the other end of turbosupercharger (11), to receive pressurized air that turbosupercharger (11) exports and make received pressurized air cooling and the pressurized air of cooling exported;
Organic Rankine bottoming cycle pressurization system (2) also comprises:
Organic Rankine bottoming cycle pressurization system intercooler (26), be arranged on the downstream of compressor (25) and one end is communicated with each intake valve (311) that compressor (25) and the other end are communicated with each cylinder (31) of internal-combustion engine (3), with receive that compressor (25) exports by pressurized air and make receive lowered the temperature by pressurized air and being exported cooling by pressurized air, each cylinder (31) for internal-combustion engine (3) uses;
The air supply of the turbosupercharger (11) of input turbo charge system (1) is outside air;
Turbo charge system intercooler (12) is communicated in the compressor (25) of organic Rankine bottoming cycle pressurization system (2), and the pressurized air of cooling passes into the feeding air of compressor (25) as described input compressor (25).
4. the two-step supercharging system of internal-combustion engine according to claim 1, is characterized in that,
Turbo charge system (1) also comprises:
Turbo charge system intercooler (12), is communicated with the other end of turbosupercharger (11), to receive pressurized air that turbosupercharger (11) exports and make received pressurized air cooling and the pressurized air of cooling exported; And
Pressure piping (13), one end is communicated in each intake valve (311) that turbo charge system intercooler (12) and the other end are communicated with each cylinder (31) of internal-combustion engine (3); Organic Rankine bottoming cycle pressurization system (2) also comprises:
Organic Rankine bottoming cycle pressurization system intercooler (26), be arranged on the downstream of compressor (25) and be communicated with compressor (25), with receive that compressor (25) exports by pressurized air and make receive lowered the temperature by pressurized air and being exported cooling by pressurized air;
The air supply of the turbosupercharger (11) of input turbo charge system (1) is outside air;
Feeding air in the compressor (25) of input organic Rankine bottoming cycle pressurization system (2) is outside air;
The output terminal of organic Rankine bottoming cycle pressurization system intercooler (26) is connected with the output terminal of turbo charge system intercooler (12) and is communicated with pressure piping (13), mixes and pass into pressure piping (13) with the pressurized air making organic Rankine bottoming cycle pressurization system intercooler (26) export the cooling exported with turbo charge system intercooler (12) by pressurized air of cooling.
5. the two-step supercharging system of internal-combustion engine according to claim 1, is characterized in that,
The two-step supercharging system of described internal-combustion engine also comprises:
Integral type intercooler (5), one end be communicated in each intake valve (311) of each cylinder (31) of internal-combustion engine (3) and the other end be communicated in the compressed-air actuated output terminal of turbosupercharger (11) and compressor (25) by compressed-air actuated output terminal, integral type intercooler (5) is entered after what the pressurized air exported to make turbosupercharger (11) and compressor (25) exported mixed by pressurized air, integral type intercooler (5) is by the pressurized air of the mixing after cooling and exported by pressurized air, each cylinder (31) for internal-combustion engine (3) uses,
The air supply of the turbosupercharger (11) of input turbo charge system (1) is outside air;
Feeding air in the compressor (25) of input organic Rankine bottoming cycle pressurization system (2) is outside air.
6. the two-step supercharging system of the internal-combustion engine according to any one of claim 1-5, is characterized in that, organic Rankine bottoming cycle pressurization system (2) also comprises:
Organic Rankine bottoming cycle bypass system (27), one end is communicated with the other end between decompressor (23) and vaporizer (22) and is communicated with between decompressor (23) and condenser (24); And
Electric valve (28), is arranged at organic Rankine bottoming cycle bypass system (27), controls the flow of organic Rankine bottoming cycle bypass system (27).
7. the two-step supercharging system of internal-combustion engine according to claim 6, is characterized in that, the two-step supercharging system of described internal-combustion engine also comprises:
Controller (4), communication connection turbo charge system (1) and organic Rankine bottoming cycle pressurization system (2), control the operation of turbo charge system (1) and organic Rankine bottoming cycle pressurization system (2).
8. the two-step supercharging system of internal-combustion engine according to claim 4, is characterized in that,
The pressurized air that organic Rankine bottoming cycle pressurization system intercooler (26) exports the cooling exported with turbo charge system intercooler (12) by pressurized air of cooling is identical on temperature and pressure.
9. the two-step supercharging system of internal-combustion engine according to claim 5, is characterized in that,
It is identical on temperature and pressure by pressurized air that the pressurized air that turbosupercharger (11) exports and compressor (25) export.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104632313A (en) * | 2015-01-27 | 2015-05-20 | 沈天昱 | Device and method for preparing compressed air by means of ORC |
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