CN103032156B - Expansion working medium energy multilevel utilization device for internal combustion engine and using method thereof - Google Patents
Expansion working medium energy multilevel utilization device for internal combustion engine and using method thereof Download PDFInfo
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- CN103032156B CN103032156B CN201210530938.5A CN201210530938A CN103032156B CN 103032156 B CN103032156 B CN 103032156B CN 201210530938 A CN201210530938 A CN 201210530938A CN 103032156 B CN103032156 B CN 103032156B
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 211
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000002347 injection Methods 0.000 claims abstract description 59
- 239000007924 injection Substances 0.000 claims abstract description 59
- 239000003381 stabilizer Substances 0.000 claims description 28
- 239000007921 spray Substances 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 16
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- 239000007789 gas Substances 0.000 description 63
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- 238000003912 environmental pollution Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- 239000002912 waste gas Substances 0.000 description 1
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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
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The invention discloses an expansion working medium energy multilevel utilization device for an internal combustion engine and a using method thereof. The expansion working medium multilevel utilization device comprises the internal combustion engine, a piston-type expansion machine and a compressed gas source; the compressed gas source comprises a high pressure gas storage tank, a safety valve, a switch valve, a first compressed air injection pipeline and a second compressed air injection pipeline; the first compressed air injection pipeline comprises a first pressure regulating valve, a first flow regulating valve, a first pressure stabilizing box, a first high-speed solenoid valve, a first compressed air nozzle and a connecting pipeline; and the second compressed air injection pipeline comprises a second pressure regulating valve, a second flow regulating valve, a second pressure stabilizing box, a second high-speed solenoid valve, a second compressed air nozzle and a connecting pipeline. According to the expansion working medium energy multilevel utilization device for the internal combustion engine and the using method thereof, the compressed air injection pipelines are utilized to control the injection pressure, flow and time of the compressed air and simultaneously control the exhaust angle of advance of the internal combustion engine and the exhaust closure angle of the piston-type expansion machine, so that the expansion working medium energy multilevel utilization of the internal combustion engine can be realized to the maximum extent under different working conditions.
Description
Technical field
The invention belongs to energy-saving and emission-reduction field, relate to a kind of internal-combustion engine expansion working medium energy multilevel utilization device and using method thereof.
Background technique
Along with the shortage of oil, the pollution of environment, the energy-conservation common recognition having become the whole mankind.For internal-combustion engine industry, how to reduce fuel consumption rate, improve the focus that fuel utilization ratio has become research.There are some researches show, the expansion working medium energy that motor fuel burning produces only is used effectively less than 40%, and remaining energy is taken away mainly through exhaust and cooling liquid, causes the waste of the energy and the thermo-pollution of environment.Make full use of internal-combustion engine expansion working medium energy, can significantly improve fuel of internal combustion engine Economy, reduce environmental pollution.Engine exhaust gas is entered another cylinder and carries out reflation recovery expansion working medium energy by Ilmor company and the employing of Scuderia company; Said method reclaims internal-combustion engine expansion working medium energy by single channel, and capacity usage ratio is not high.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the invention is to propose a kind of internal-combustion engine expansion working medium energy multilevel utilization device and using method thereof.
The present invention adopts following technological scheme:
A kind of internal-combustion engine expansion working medium energy multilevel utilization device, comprises internal-combustion engine, piston expansion engine and compressed gas source; Internal-combustion engine is provided with internal combustion engine, and piston expansion engine is provided with piston expansion engine piston; Internal-combustion engine is connected with one end of internal-combustion engine vent-pipe by I. C. engine exhaust door, the other end of internal-combustion engine vent-pipe is communicated with one end of piston expansion engine suction tude, and piston expansion engine is connected with the other end of piston expansion engine suction tude by piston expansion engine intake valve; Piston expansion engine is connected with piston expansion engine outlet pipe by piston expansion engine exhaust valve; Compressed gas source comprises high pressure tank, safety valve, switch valve, the first blast injection pipeline and the second blast injection pipeline; First blast injection pipeline comprises the first pressure regulator valve, first flow modulating valve, the first pressure stabilizer, the first high-speed electromagnetic valve, the first compressed-air atomizer and connecting pipeline; Second blast injection pipeline comprises the second pressure regulator valve, second adjustable valve, the second pressure stabilizer, the second high-speed electromagnetic valve, the second compressed-air atomizer and connecting pipeline; First compressed-air atomizer of the first blast injection pipeline, the first high-speed electromagnetic valve, the first pressure stabilizer, first flow modulating valve, the first pressure regulator valve are connected with switch valve by connecting pipeline successively; Second compressed-air atomizer of the second blast injection pipeline, the second high-speed electromagnetic valve, the second pressure stabilizer, second adjustable valve, the second pressure regulator valve are connected with switch valve by connecting pipeline successively; First compressed-air atomizer is arranged on internal-combustion engine cylinder head; Second compressed-air atomizer is arranged on piston expansion engine cylinder head; High pressure tank one end connection safety valve, the other end by switch valve respectively with the first blast injection pipeline and the second blast injection pipeline connection; Piston expansion engine discharge capacity is greater than engine swept volume; Described internal-combustion engine is oil-burning internal combustion engine or gas internal-combustion engine, internal-combustion piston engine or rotary combustion engine, single-cylinder engine or multi-cylinder engine, compression ignition internal combustion engine or ignition internal combustion engine.
A kind of internal-combustion engine expansion working medium energy multilevel utilization device, comprises internal-combustion engine, piston expansion engine and compressed gas source; Internal-combustion engine is provided with internal combustion engine, and piston expansion engine is provided with piston expansion engine piston; Internal-combustion engine is connected with one end of internal-combustion engine vent-pipe by I. C. engine exhaust door, and the other end of internal-combustion engine vent-pipe is connected with piston expansion engine by piston expansion engine suction tude; Piston expansion engine is connected with piston expansion engine outlet pipe by piston expansion engine exhaust valve; Compressed gas source comprises high pressure tank, safety valve, switch valve, the first blast injection pipeline and the second blast injection pipeline; First blast injection pipeline comprises the first pressure regulator valve, first flow modulating valve, the first pressure stabilizer, the first high-speed electromagnetic valve, the first compressed-air atomizer and connecting pipeline; Second blast injection pipeline comprises the second pressure regulator valve, second adjustable valve, the second pressure stabilizer, the second high-speed electromagnetic valve, the second compressed-air atomizer and connecting pipeline; First compressed-air atomizer of the first blast injection pipeline, the first high-speed electromagnetic valve, the first pressure stabilizer, first flow modulating valve, the first pressure regulator valve are connected with switch valve by connecting pipeline successively; Second compressed-air atomizer of the second blast injection pipeline, the second high-speed electromagnetic valve, the second pressure stabilizer, second adjustable valve, the second pressure regulator valve are connected with switch valve by connecting pipeline successively; First compressed-air atomizer is arranged on internal-combustion engine cylinder head; Second compressed-air atomizer is arranged on piston expansion engine cylinder head; High pressure tank one end connection safety valve, the other end by switch valve respectively with the first blast injection pipeline and the second blast injection pipeline connection; Piston expansion engine discharge capacity is greater than engine swept volume; Described internal-combustion engine is oil-burning internal combustion engine or gas internal-combustion engine, internal-combustion piston engine or rotary combustion engine, single-cylinder engine or multi-cylinder engine, compression ignition internal combustion engine or ignition internal combustion engine.
Described piston expansion engine outlet pipe connects emission-control equipment and/or exhaust gas turbocharge device.
The using method of described internal-combustion engine expansion working medium energy multilevel utilization device, working procedure is as follows: when the engine is running, internal-combustion engine sucks air, after compression stroke, combustion in IC engine produces high temperature and high pressure gas working medium, promotion internal combustion engine does work, and this process is that the expansion working medium energy first order utilizes; Certain phase is proceeded at expansion stroke, first high-speed electromagnetic valve is opened, compressed gas source sprays pressurized air by the first compressed-air atomizer internal combustion engine, in pressurized air and internal-combustion engine, expansion working medium forms High Temperature High Pressure mixed gas, continue to promote internal combustion engine acting, this process is that the expansion working medium energy second level utilizes; After expansion stroke terminates, in internal-combustion engine, mixed gas enters piston expansion engine by pipeline, and piston expansion engine utilizes mixed gas to expand, and this process is that the expansion working medium energy third level utilizes; Piston expansion engine outwardly discharge section mixed gas subsequently, and residue mixed gas is compressed; When near, second high-speed electromagnetic valve is opened, compressed gas source sprays pressurized air by the second compressed-air atomizer to piston expansion engine, gas and vapor permeation in pressurized air and piston expansion engine, form mixed gas, promote piston expansion engine again to do work, this process is that the expansion working medium energy fourth stage utilizes; In last piston expansion engine, gas is all discharged.
For the internal-combustion engine of an operating mode, fix compressed gas source internal combustion engine and piston expansion engine according to operating point and spray compressed-air actuated pressure, flow and moment and I. C. engine exhaust advance angle and piston expansion engine exc. angle; For the internal-combustion engine of lineman's condition and face operating mode, according to internal-combustion engine lineman condition and face operating mode, regulate compressed gas source internal combustion engine and piston expansion engine to spray compressed-air actuated pressure, flow and moment and I. C. engine exhaust advance angle and piston expansion engine exc. angle, make internal-combustion engine all can utilize expansion working medium energy to greatest extent under different operating mode.
Compared with prior art, the present invention has following beneficial effect:
1. can realize internal-combustion engine expansion working medium energy multi-level to utilize, make full use of fuel combustion and release energy, improve fuel utilization efficiency, reduce environmental pollution.
2. utilize pressure regulator valve, flow control valve and high-speed electromagnetic valve can effectively control blast injection pressure, flow and moment, controlling combustion engine exhaust advance angle and piston expansion engine exc. angle, make internal-combustion engine all can utilize expansion working medium energy to greatest extent under different operating mode simultaneously.
Accompanying drawing explanation
Fig. 1 is internal-combustion engine expansion working medium energy multilevel utilization device structural representation;
Fig. 2 is that internal-combustion engine expansion working medium energy multi-level utilizes using method schematic diagram.
Fig. 3 is gas pressure change curve synoptic diagram in internal-combustion engine and piston expansion engine.
Be labeled as in figure: internal-combustion engine 1, internal-combustion engine vent-pipe 2, I. C. engine exhaust door 3, first high-speed electromagnetic valve 4, first pressure stabilizer 5, second pressure stabilizer 6, second high-speed electromagnetic valve 7, piston expansion engine suction tude 8, piston expansion engine intake valve 9, piston expansion engine outlet pipe 10, piston expansion engine exhaust valve 11, second compressed-air atomizer 12, piston expansion engine 13, piston expansion engine piston 14, safety valve 15, high pressure tank 16, switch valve 17, second pressure regulator valve 18, second adjustable valve 19, first pressure regulator valve 20, first flow modulating valve 21, internal combustion engine 22, first compressed-air atomizer 23.
Embodiment
Be further elaborated below in conjunction with accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3 pairs of technical solution of the present invention.
A kind of internal-combustion engine expansion working medium energy multilevel utilization device, comprises internal-combustion engine 1, piston expansion engine 13 and compressed gas source; Internal-combustion engine 1 is provided with internal combustion engine 22, and piston expansion engine 13 is provided with piston expansion engine piston 14; Internal-combustion engine 1 is connected with one end of internal-combustion engine vent-pipe 2 by I. C. engine exhaust door 3, the other end of internal-combustion engine vent-pipe 2 is communicated with one end of piston expansion engine suction tude 8, and piston expansion engine 13 is connected with the other end of piston expansion engine suction tude 8 by piston expansion engine intake valve 9; Piston expansion engine 13 is connected with piston expansion engine outlet pipe 10 by piston expansion engine exhaust valve 11; Compressed gas source comprises high pressure tank 16, safety valve 15, switch valve 17, first blast injection pipeline and the second blast injection pipeline; First blast injection pipeline comprises the first pressure regulator valve 20, first flow modulating valve 21, first pressure stabilizer 5, first high-speed electromagnetic valve 4, first compressed-air atomizer 23 and connecting pipeline; Second blast injection pipeline comprises the second pressure regulator valve 18, second adjustable valve 19, second pressure stabilizer 6, second high-speed electromagnetic valve 7, second compressed-air atomizer 12 and connecting pipeline; First compressed-air atomizer 23, first high-speed electromagnetic valve 4, first pressure stabilizer 5 of the first blast injection pipeline, first flow modulating valve 21, first pressure regulator valve 20 are connected with switch valve 17 by connecting pipeline successively; Second compressed-air atomizer 12, second high-speed electromagnetic valve 7, second pressure stabilizer 6 of the second blast injection pipeline, second adjustable valve 19, second pressure regulator valve 18 are connected with switch valve 17 by connecting pipeline successively; First compressed-air atomizer 23 is arranged on internal-combustion engine 1 cylinder head; Second compressed-air atomizer 12 is arranged on piston expansion engine 13 cylinder head; High pressure tank 16 one end connection safety valve 15, the other end by switch valve 17 respectively with the first blast injection pipeline and the second blast injection pipeline connection; Piston expansion engine 13 discharge capacity is greater than internal-combustion engine 1 discharge capacity; Described internal-combustion engine 1 is oil-burning internal combustion engine or gas internal-combustion engine, internal-combustion piston engine or rotary combustion engine, single-cylinder engine or multi-cylinder engine, compression ignition internal combustion engine or ignition internal combustion engine.
Another internal-combustion engine expansion working medium energy multilevel utilization device, compared with said apparatus, remove piston expansion engine intake valve 9, in the internal-combustion engine 1 exhaust stroke stage, in internal-combustion engine 1, expansion working medium directly enters piston expansion engine 13 by I. C. engine exhaust door 3, internal-combustion engine vent-pipe 2 and piston expansion engine suction tude 8, when stating device identical function in realization, simplify apparatus structure.It comprises internal-combustion engine 1, piston expansion engine 13 and compressed gas source; Internal-combustion engine 1 is provided with internal combustion engine 22, and piston expansion engine 13 is provided with piston expansion engine piston 14; Internal-combustion engine 1 is connected by I. C. engine exhaust door 3 one end with internal-combustion engine vent-pipe 2, and the other end of internal-combustion engine vent-pipe 2 is connected with piston expansion engine 13 by piston expansion engine suction tude 8; Piston expansion engine 13 is connected with piston expansion engine outlet pipe 10 by piston expansion engine exhaust valve 11; Compressed gas source comprises high pressure tank 16, safety valve 15, switch valve 17, first blast injection pipeline and the second blast injection pipeline; First blast injection pipeline comprises the first pressure regulator valve 20, first flow modulating valve 21, first pressure stabilizer 5, first high-speed electromagnetic valve 4, first compressed-air atomizer 23 and connecting pipeline; Second blast injection pipeline comprises the second pressure regulator valve 18, second adjustable valve 19, second pressure stabilizer 6, second high-speed electromagnetic valve 7, second compressed-air atomizer 12 and connecting pipeline; First compressed-air atomizer 23, first high-speed electromagnetic valve 4, first pressure stabilizer 5 of the first blast injection pipeline, first flow modulating valve 21, first pressure regulator valve 20 are connected with switch valve 17 by connecting pipeline successively; Second compressed-air atomizer 12, second high-speed electromagnetic valve 7, second pressure stabilizer 6 of the second blast injection pipeline, second adjustable valve 19, second pressure regulator valve 18 are connected with switch valve 17 by connecting pipeline successively; First compressed-air atomizer 23 is arranged on internal-combustion engine 1 cylinder head; Second compressed-air atomizer 12 is arranged on piston expansion engine 13 cylinder head; High pressure tank 16 one end connection safety valve 15, the other end by switch valve 17 respectively with the first blast injection pipeline and the second blast injection pipeline connection; Piston expansion engine 13 discharge capacity is greater than internal-combustion engine 1 discharge capacity; Described internal-combustion engine 1 is oil-burning internal combustion engine or gas internal-combustion engine, internal-combustion piston engine or rotary combustion engine, single-cylinder engine or multi-cylinder engine, compression ignition internal combustion engine or ignition internal combustion engine.
Described piston expansion engine outlet pipe 10 connects emission-control equipment and/or exhaust gas turbocharge device.
The using method of described internal-combustion engine expansion working medium energy multilevel utilization device, working procedure is as follows: when internal-combustion engine 1 runs, internal-combustion engine 1 sucks air, after compression stroke, internal-combustion engine (1) burning produces high temperature and high pressure gas working medium, promote internal combustion engine 22 to do work, this process is that the expansion working medium energy first order utilizes; Certain phase is proceeded at expansion stroke, first high-speed electromagnetic valve 4 is opened, compressed gas source sprays pressurized air by the first compressed-air atomizer 23 internal combustion engine 1, in pressurized air and internal-combustion engine 1, expansion working medium forms High Temperature High Pressure mixed gas, continue to promote internal combustion engine 22 to do work, this process is that the expansion working medium energy second level utilizes; After expansion stroke terminates, in internal-combustion engine 1, mixed gas enters piston expansion engine 13 by pipeline, and piston expansion engine 13 utilizes mixed gas to expand, and this process is that the expansion working medium energy third level utilizes; Piston expansion engine 13 outwardly discharge section mixed gas subsequently, and residue mixed gas is compressed; When near, second high-speed electromagnetic valve 7 is opened, compressed gas source sprays pressurized air by the second compressed-air atomizer 12 to piston expansion engine 13, gas and vapor permeation in pressurized air and piston expansion engine 13, form mixed gas, promote piston expansion engine 13 again to do work, this process is that the expansion working medium energy fourth stage utilizes; In last piston expansion engine 13, gas is all discharged.
For the internal-combustion engine 1 of an operating mode, fix compressed gas source internal combustion engine 1 and piston expansion engine 13 according to operating point and spray compressed-air actuated pressure, flow and moment and I. C. engine exhaust advance angle and piston expansion engine exc. angle; For the internal-combustion engine 1 of lineman's condition and face operating mode, according to internal-combustion engine 1 lineman's condition and face operating mode, regulate compressed gas source internal combustion engine 1 and piston expansion engine 13 to spray compressed-air actuated pressure, flow and moment and I. C. engine exhaust advance angle and piston expansion engine exc. angle, make internal-combustion engine 1 all can utilize expansion working medium energy to greatest extent under different operating mode.
As shown in Figure 1, after internal-combustion engine 1 compression stroke terminates, electronic control unit controls oil spout igniting (compression ignition internal combustion engine is without igniting process), makes to produce High Temperature High Pressure expansion working medium in internal-combustion engine 1, promotes the descending acting of internal combustion engine 22.This process is that the internal-combustion engine expansion working medium energy first order utilizes.
When internal combustion engine 22 goes downwards to certain phase, electronic control unit controls the first high-speed electromagnetic valve 4 internal combustion engine 1 and sprays pressurized air.In pressurized air and internal-combustion engine 1, gas and vapor permeation forms High Temperature High Pressure mixed gas, continues to promote the descending acting of internal combustion engine 22.This process is that the internal-combustion engine expansion working medium energy second level utilizes.
Electronic control unit controlling combustion engine exhaust valve 3 start-up time subsequently, makes mixed gas in internal-combustion engine 1 enter internal-combustion engine vent-pipe 2.Now piston expansion engine piston 14 is in descending phase.In internal-combustion engine 1, mixed gas is through piston expansion engine suction tude 8 and piston expansion engine intake valve 9, enters piston expansion engine 13, promotes the descending acting of piston expansion engine piston 14.This process is that the internal-combustion engine expansion working medium energy third level utilizes.
When piston expansion engine piston 14 goes downwards to certain phase, electronic control unit control piston formula expander exhaust gas door 11 is opened, and now in piston expansion engine 13, gas enters piston expansion engine outlet pipe 10 by piston expansion engine exhaust valve 11.When piston expansion engine piston 14 is up to certain phase, electronic control unit control piston formula expander exhaust gas door 11 is closed, and residual gas is stored in piston expansion engine 13.Piston expansion engine piston 14 continues up subsequently, compression piston type decompressor 13 gas in the jar.
When piston expansion engine piston 14 rises to certain phase, electronic control unit controls the second solenoid valve 7 and sprays pressurized air to piston expansion engine 13, be mixed to form mixed gas with piston expansion engine 13 cylinder interior gas, promote the descending acting of piston expansion engine piston 14.This process is that the internal-combustion engine expansion working medium energy fourth stage utilizes.
When piston expansion engine piston 14 goes downwards to certain phase, electronic control unit control piston formula expander exhaust gas door 11 is opened.In piston expansion engine 13, gas is all discharged through piston expansion engine exhaust valve 11 and piston expansion engine outlet pipe 10.
High-pressure air source keeps discontinuity internal combustion engine 1 and piston expansion engine 13 to supply pressurized air during system cloud gray model.When system brings into operation, switch valve 17 is opened.Pressurized air enters the first pressure regulator valve 20 and the second pressure regulator valve 18 from high pressure tank 16 through pipeline.First pressure regulator valve 20 and the second pressure regulator valve 18 regulate blast injection pressure respectively according to demand.First flow modulating valve 21 and second adjustable valve 19 is entered respectively through pressure controlled pressurized air; First flow modulating valve 21 and second adjustable valve 19 regulate blast injection flow respectively according to demand.Pressurized air after Flow-rate adjustment enters the first pressure stabilizer 5 and the second pressure stabilizer 6 respectively, constant compression air pressure.Pressurized air after pressure stability arrives the first high-speed electromagnetic valve 4 and the second high-speed electromagnetic valve 7 respectively.First high-speed electromagnetic valve 4 and the second high-speed electromagnetic valve 7 control the blast injection moment respectively according to demand.Last pressurized air, respectively by the first compressed-air atomizer 23 and the second compressed-air atomizer 12, enters internal-combustion engine 1 and piston expansion engine 13 respectively.
As shown in Figure 2, when internal-combustion engine 1 is in expansion stroke, now piston expansion engine 13 is in exhaust stroke.Expansion working medium expansion work in internal-combustion engine 1, in the expansion stroke later stage, the first high-speed electromagnetic valve 4 internal combustion engine 1 sprays pressurized air.I. C. engine exhaust door 3 and piston expansion engine intake valve 9 are opened subsequently, and internal-combustion engine 1 is in exhaust stroke, and piston expansion engine 13 is in intake stroke.Mixed gas enters piston expansion engine 13 through internal-combustion engine vent-pipe 2 and piston expansion engine suction tude 8.I. C. engine exhaust door 3 and piston expansion engine exhaust valve 11 are closed subsequently, and internal-combustion engine 1 exhaust stroke terminates to enter intake stroke, and piston expansion engine 13 intake stroke terminates to enter exhaust stroke.Internal-combustion engine 1 intake stroke is identical with tradition.Piston expansion engine 13 exhaust stroke proceeds to certain phase, and piston expansion engine exhaust valve 11 cuts out, and a part of waste gas is remained in piston expansion engine 13.Internal-combustion engine 1 enters compression stroke subsequently, and piston expansion engine 13 enters expansion stroke.Now the second high-speed electromagnetic valve 7 sprays pressurized air to piston type expansion 13.Last internal-combustion engine 1 enters expansion stroke again, and piston expansion engine 13 enters exhaust stroke again.
As shown in Figure 3, during internal-combustion engine 1 is in expansion stroke, in internal-combustion engine 1, gas reduces gradually along with internal combustion engine 22 downstream pressure.When internal combustion engine goes downwards to a certain degree, the first high-speed electromagnetic valve 4 internal combustion engine 1 sprays pressurized air, absorbs gas in the jar heat, makes gas pressure in internal-combustion engine 1 continue to be in higher state.Now piston expansion engine 13 is in exhaust phase, and piston expansion engine 13 internal pressure reduces gradually.Internal-combustion engine 1 enters exhaust stroke subsequently, and internal-combustion engine 1 exhaust enters in piston expansion engine 13, and internal-combustion engine 1 internal pressure reduces gradually, and in piston expansion engine 13, gas pressure first raises rear reduction.Internal-combustion engine 1 enters intake stroke subsequently, and piston expansion engine 13 enters exhaust stroke.Because piston expansion engine exhaust valve 11 cuts out during exhaust stroke, piston expansion engine 13 in-cylinder pressure is made to increase.Internal-combustion engine 1 enters compression stroke subsequently, and in internal-combustion engine 1, gas pressure rises gradually, and in compression stroke latter stage, due to fuel combustion, pressure occurs sharply increasing trend.And because pressurized air sprays in piston expansion engine 13, pressure keeps higher level, blast injection stops subsequently, and piston expansion engine 13 internal pressure declines gradually.
Engine conditions can be divided into an operating mode, lineman's condition and face operating mode.For an operating mode, for the internal-combustion engine of an operating mode, fix compressed gas source internal combustion engine and piston expansion engine according to operating point and spray compressed-air actuated pressure, flow and moment and I. C. engine exhaust advance angle and piston expansion engine exc. angle; For the internal-combustion engine of lineman's condition and face operating mode, according to internal-combustion engine lineman condition and face operating mode, regulate compressed gas source internal combustion engine and piston expansion engine to spray compressed-air actuated pressure, flow and moment and I. C. engine exhaust advance angle and piston expansion engine exc. angle, make internal-combustion engine all can utilize expansion working medium energy to greatest extent under different operating mode.
Claims (5)
1. an internal-combustion engine expansion working medium energy multilevel utilization device, is characterized in that, it comprises internal-combustion engine (1), piston expansion engine (13) and compressed gas source; Internal-combustion engine (1) is provided with internal combustion engine (22), and piston expansion engine (13) is provided with piston expansion engine piston (14); Internal-combustion engine (1) is connected by I. C. engine exhaust door (3) one end with internal-combustion engine vent-pipe (2), the other end of internal-combustion engine vent-pipe (2) is communicated with one end of piston expansion engine suction tude (8), and piston expansion engine (13) is connected by the other end of piston expansion engine intake valve (9) with piston expansion engine suction tude (8); Piston expansion engine (13) is connected with piston expansion engine outlet pipe (10) by piston expansion engine exhaust valve (11); Compressed gas source comprises high pressure tank (16), safety valve (15), switch valve (17), the first blast injection pipeline and the second blast injection pipeline; First blast injection pipeline comprises the first pressure regulator valve (20), first flow modulating valve (21), the first pressure stabilizer (5), the first high-speed electromagnetic valve (4), the first compressed-air atomizer (23) and connecting pipeline; Second blast injection pipeline comprises the second pressure regulator valve (18), second adjustable valve (19), the second pressure stabilizer (6), the second high-speed electromagnetic valve (7), the second compressed-air atomizer (12) and connecting pipeline; First compressed-air atomizer (23) of the first blast injection pipeline, the first high-speed electromagnetic valve (4), the first pressure stabilizer (5), first flow modulating valve (21), the first pressure regulator valve (20) are connected with switch valve (17) by connecting pipeline successively; Second compressed-air atomizer (12) of the second blast injection pipeline, the second high-speed electromagnetic valve (7), the second pressure stabilizer (6), second adjustable valve (19), the second pressure regulator valve (18) are connected with switch valve (17) by connecting pipeline successively; First compressed-air atomizer (23) is arranged on internal-combustion engine (1) cylinder head; Second compressed-air atomizer (12) is arranged on piston expansion engine (13) cylinder head; High pressure tank (16) one end connection safety valve (15), the other end by switch valve (17) respectively with the first blast injection pipeline and the second blast injection pipeline connection; Piston expansion engine (13) discharge capacity is greater than internal-combustion engine (1) discharge capacity; Described internal-combustion engine (1) is oil-burning internal combustion engine or gas internal-combustion engine, internal-combustion piston engine or rotary combustion engine, single-cylinder engine or multi-cylinder engine, compression ignition internal combustion engine or ignition internal combustion engine.
2. an internal-combustion engine expansion working medium energy multilevel utilization device, is characterized in that, it comprises internal-combustion engine (1), piston expansion engine (13) and compressed gas source; Internal-combustion engine (1) is provided with internal combustion engine (22), and piston expansion engine (13) is provided with piston expansion engine piston (14); Internal-combustion engine (1) is connected by I. C. engine exhaust door (3) one end with internal-combustion engine vent-pipe (2), and the other end of internal-combustion engine vent-pipe (2) is connected with piston expansion engine (13) by piston expansion engine suction tude (8); Piston expansion engine (13) is connected with piston expansion engine outlet pipe (10) by piston expansion engine exhaust valve (11); Compressed gas source comprises high pressure tank (16), safety valve (15), switch valve (17), the first blast injection pipeline and the second blast injection pipeline; First blast injection pipeline comprises the first pressure regulator valve (20), first flow modulating valve (21), the first pressure stabilizer (5), the first high-speed electromagnetic valve (4), the first compressed-air atomizer (23) and connecting pipeline; Second blast injection pipeline comprises the second pressure regulator valve (18), second adjustable valve (19), the second pressure stabilizer (6), the second high-speed electromagnetic valve (7), the second compressed-air atomizer (12) and connecting pipeline; First compressed-air atomizer (23) of the first blast injection pipeline, the first high-speed electromagnetic valve (4), the first pressure stabilizer (5), first flow modulating valve (21), the first pressure regulator valve (20) are connected with switch valve (17) by connecting pipeline successively; Second compressed-air atomizer (12) of the second blast injection pipeline, the second high-speed electromagnetic valve (7), the second pressure stabilizer (6), second adjustable valve (19), the second pressure regulator valve (18) are connected with switch valve (17) by connecting pipeline successively; First compressed-air atomizer (23) is arranged on internal-combustion engine (1) cylinder head; Second compressed-air atomizer (12) is arranged on piston expansion engine (13) cylinder head; High pressure tank (16) one end connection safety valve (15), the other end by switch valve (17) respectively with the first blast injection pipeline and the second blast injection pipeline connection; Piston expansion engine (13) discharge capacity is greater than internal-combustion engine (1) discharge capacity; Described internal-combustion engine (1) is oil-burning internal combustion engine or gas internal-combustion engine, internal-combustion piston engine or rotary combustion engine, single-cylinder engine or multi-cylinder engine, compression ignition internal combustion engine or ignition internal combustion engine.
3. internal-combustion engine expansion working medium energy multilevel utilization device as claimed in claim 1 or 2, is characterized in that, described piston expansion engine outlet pipe (10) connects emission-control equipment and/or exhaust gas turbocharge device.
4. the using method of an internal-combustion engine expansion working medium energy multilevel utilization device as claimed in claim 1, it is characterized in that, working procedure is as follows: when internal-combustion engine (1) runs, internal-combustion engine (1) sucks air, after compression stroke, internal-combustion engine (1) burning produces high temperature and high pressure gas working medium, promotes internal combustion engine (22) acting, and this process is that the expansion working medium energy first order utilizes; Certain phase is proceeded at expansion stroke, first high-speed electromagnetic valve (4) is opened, compressed gas source sprays pressurized air by the first compressed-air atomizer (23) internal combustion engine 1, pressurized air and the interior expansion working medium of internal-combustion engine (1) form High Temperature High Pressure mixed gas, continue to promote internal combustion engine (22) acting, this process is that the expansion working medium energy second level utilizes; After expansion stroke terminates, internal-combustion engine (1) interior mixed gas enters piston expansion engine (13) by pipeline, and piston expansion engine (13) utilizes mixed gas to expand, and this process is that the expansion working medium energy third level utilizes; Piston expansion engine (13) outwardly discharge section mixed gas subsequently, and residue mixed gas is compressed; When near, second high-speed electromagnetic valve (7) is opened, compressed gas source sprays pressurized air by the second compressed-air atomizer (12) to piston expansion engine (13), pressurized air and piston expansion engine (13) interior gas and vapor permeation, form mixed gas, promote piston expansion engine (13) again to do work, this process is that the expansion working medium energy fourth stage utilizes; Last piston expansion engine (13) interior gas is all discharged.
5. method as claimed in claim 4, it is characterized in that, for the internal-combustion engine (1) of an operating mode, fix compressed gas source internal combustion engine (1) and piston expansion engine (13) according to operating point and spray compressed-air actuated pressure, flow and moment and I. C. engine exhaust advance angle and piston expansion engine exc. angle; For the internal-combustion engine (1) of lineman's condition and face operating mode, according to internal-combustion engine (1) lineman's condition and face operating mode, regulate compressed gas source internal combustion engine (1) and piston expansion engine (13) to spray compressed-air actuated pressure, flow and moment and I. C. engine exhaust advance angle and piston expansion engine exc. angle, make internal-combustion engine (1) all can utilize expansion working medium energy to greatest extent under different operating mode.
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| CN112682102B (en) * | 2020-12-24 | 2021-10-19 | 内蒙古科技大学 | Structure coupling type multistage pneumatic power machine |
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| JP3885206B2 (en) * | 2002-11-11 | 2007-02-21 | 胡 龍潭 | Eight stroke internal combustion engine |
| CN1580515A (en) * | 2003-08-06 | 2005-02-16 | 张胜利 | Double expansion piston-type IC engine |
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