CN104018931A - Reciprocating heat accumulating type internal combustion engine using scavenging pump for auxiliary intake and exhaust - Google Patents
Reciprocating heat accumulating type internal combustion engine using scavenging pump for auxiliary intake and exhaust Download PDFInfo
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- CN104018931A CN104018931A CN201410246599.7A CN201410246599A CN104018931A CN 104018931 A CN104018931 A CN 104018931A CN 201410246599 A CN201410246599 A CN 201410246599A CN 104018931 A CN104018931 A CN 104018931A
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Abstract
A reciprocating heat accumulating type internal combustion engine using a scavenging pump for auxiliary intake and exhaust comprises the scavenging pump, a compression cylinder, a heat accumulator, a communicating pipe, a combustion chamber and an expansion cylinder. The internal combustion engine is structurally characterized in that the heat accumulator is located in a channel of the communicating pipe which connects the compression cylinder and the expansion cylinder, and the middle of the compression cylinder is provided with a scavenging port and a waste gas exhaust port. According to the basic working principle, when a compression cylinder piston moves from a lower dead center to an upper dead center, air in the compression cylinder is compressed, the compressed air is heated when flowing through the heat accumulator, enters the combustion chamber and is mixed with fuel for combustion, an expansion cylinder piston moves downwards from the upper dead center, and fuel gas expands and does work. When the expansion cylinder piston moves upwards, the compression cylinder piston moves downwards, the fuel gas comes out of the expansion cylinder after doing work, passes through a combustor and the heat accumulator in the reverse direction, heats the heat accumulator, lowers the temperature of itself, enters to a compression cavity and is exhausted through the waste gas exhaust port; air pre-compressed by the scavenging pump enters the compression cylinder through the scavenging port and further makes waste gas be discharged.
Description
Technical field
The present invention relates to motor, is the reciprocal heat accumulating type internal-combustion engine of a kind of scavenging pump additional-air inlet and exhaust.
Background technique
Motor generally refers to heat engine, be a kind of by fuel or other energy conversions, be the heat energy of engine interior working medium, and be further converted to the power plant of mechanical energy.Internal-combustion engine is a kind of traditional, utilizes motor very widely, and in industry, the industry fields such as communications and transportation have important application.As its name suggests, internal-combustion engine be a kind of fuel in cylinder interior work by combustion, modal is petrol engine and diesel engine.Because fuel combustion is carried out under the restrictive conditions such as short time, intermittent type, cause fuel combustion insufficient, tail gas pollution is serious, off-design efficiency is poor, engine scuffing, and maintenance cost is high, high to fuel mass requirement, many shortcomings such as detonation and noise vibration.Internal-combustion engine is a kind of relatively ripe technology at present, but its development is subject to certain limitation owing to being subject to above-mentioned disadvantages affect.
Common petrol engine and diesel engine are all four stroke engine, and a power cycle is through air inlet, and compression, expands and do work and exhaust Four processes.Both are that petrol engine is spark-ignition engine at maximum difference, and diesel engine is compression ignition engine.Petrol engine is lighter and handier, high specific power and rotating speed advantages of higher, but owing to being Spark ignition type, make the engine compression ratio can not be too high, the possibility that has detonation in compression process, high to the OR Octane Requirements of fuel, and also the efficiency of petrol engine is lower with respect to diesel engine.Diesel engine is compression-ignited, and compression stroke makes compressed-air actuated temperature enough high, can light the fuel spraying into, and high compression ratio makes motor integral body heavier.And the combustion process of diesel engine be take diffusive combustion as main, burning is also insufficient, has more carbon granule discharge, heavier to pollution of atmosphere.
Designing a kind of light and handy, high efficiency, low pollution, low-dimensional hair care motivation had great significance in the epoch of energy scarcity.
Summary of the invention
Low in order to overcome petrol engine efficiency, general seriously polluted of diesel engine heaviness and internal-combustion engine, off-design efficiency is low, and noise and vibration is serious, moving element is many, keep in repair the problems such as frequent, the present invention proposes the reciprocal heat accumulating type internal-combustion engine of a kind of scavenging pump additional-air inlet and exhaust.
This reciprocal heat accumulating type internal-combustion engine comprises scavenging pump, compression cylinder, connecting tube, heat retainer, firing chamber and expansion cylinder, and its structure outline is that the pressurized gas outlet of compression cylinder is by being connected with expansion cylinder connecting tube.The interface that described connecting tube is connected with expansion cylinder, simultaneously as suction port and the relief opening of expansion cylinder, is called the porting of expansion cylinder herein.When expansion cylinder piston moves to lower dead center, Working medium gas enters from described porting, and when expansion cylinder piston is during to top dead center motion exhaust, Working medium gas oppositely flows out from described porting.Described heat retainer is the heat storage medium with porous channel, can carry out to the hot gas of flowing through in its porous channel heat absorption, the heat release of intermittent reciprocating.Heat retainer was directly placed in described connecting tube.In connecting tube between heat retainer and expansion cylinder, burner is set, and has corresponding fuel nozzle and spark plug.Can utilize in addition the cylinder cavity of expansion cylinder as firing chamber, and have corresponding fuel nozzle and spark plug.Described two kinds of firing chambers also can be arranged simultaneously.Described compression cylinder middle part is provided with scavenging port and exhaust vent.Scavenging pump outlet is connected with the scavenging port of compression cylinder.
The basic functional principle of this reciprocal heat accumulating type internal-combustion engine is that the air in compression cylinder is compressed when compression cylinder piston moves from lower dead center to top dead center, and exports outflow by pressurized gas, flows into connecting tube, and enters heat retainer.When pressurized air is flowed through the porous channel of heat retainer, heat retainer is to pressurized air heat release, improve compressed air temperature, air through heat retainer heating enters firing chamber, with from the burning of fuel mix out of fuel nozzle, expansion cylinder is moved to lower dead center by top dead center, and combustion gas is expanded and externally done work.When expansion cylinder piston moves from lower dead center to top dead center, compression cylinder piston moves to lower dead center from top dead center, and the combustion gas of expanding after doing manual work is flowed out from expansion cylinder, porous channel through heat retainer, heating heat retainer has reduced self temperature simultaneously, enters in compression cylinder.Along with further moving to lower dead center of compression cylinder piston, be positioned at compression cylinder middle part, original compressed cylinder piston blocks and the exhaust vent and the scavenging port that seal expose gradually, owing to there is no blocking of piston, waste gas in compression chamber is discharged from exhaust vent, through the precompressed gas of scavenging pump, from scavenging port, flow to compression cylinder, further combustion gas, and poured fresh air in compression cylinder.When compression cylinder piston moves again from lower dead center to top dead center, scavenging port and exhaust vent are blocked by piston gradually, and in compression cylinder, air is compressed, and circulation restarts.
The advantages such as the heat retainer medium of described heat retainer is generally porous ceramics, and metal corrugated plate and wire gaze etc., have regenerator temperature high, holds exothermal effect good, and price is lower.
Described scavenging pump carries out precompression to intake air, and improve air pressure air can be flowed in compression cylinder from scavenging port, further combustion gas, and make air be filled with compression cylinder.
Between heat retainer and connecting tube tube wall, place heat insulator, to reduce heat retainer heat transfer loss to external world.
Improvement project 1: be connected a cooler between compression cylinder outlet and heat retainer.When compression cylinder pressurized air, can produce more heat, can be cooling in time with cooler, reduce the compression work that compressor consumes, and can completely cut off the impact on compression cylinder of heat retainer that temperature is higher.
Improvement project 2: between scavenging pump outlet and compression cylinder scavenging port, set up an intercooler, cooling from scavenging pump air out.Air temperature through scavenging pump compression raises, and enters intercooler cooling, has reduced to enter the air temperature of compression cylinder, thereby has reduced the compression work that compression cylinder is done, and has improved overall efficiency.
Adopt after heat retainer, improved the air temperature that enters firing chamber, reduced motor and discharged the temperature of combustion gas, so increased substantially the thermal efficiency of this reciprocal heat accumulating type internal-combustion engine.In addition, when engine work, the air temperature that flows out heat retainer has reached the point of ignition of fuel, and the fuel spraying into directly burns, when expansion cylinder piston moves to lower dead center, spraying into and burning of fuel can certain time, do not have deflagration phenomenon, engine luggine and noise are little, and burning initial temperature is high, be beneficial to the perfect combustion of fuel, reduce and pollute.If can be by spark ignitor in the engine start stage.Motor is pressed smaller, and overall weight is light.Compression cylinder and expansion cylinder separately, make inflation process more abundant, have improved acting ability.
From overall structure, the expansion cylinder part that this reciprocal accumulation of heat engine temperature is the highest is not controlled the moving elements such as valve of air-flow turnover, has reduced the restriction loss in gas flow process, has improved reliability.Adopt scavenging pump to carry out precompression to air, utilized piston displacement to carry out air inlet and exhaust to the keying function of scavenging port and exhaust vent, the same apneustic moving element that waits.These designs have improved reliability of structure and working life, have also significantly reduced manufacture cost simultaneously.
The medium of the heat retainer that this reciprocal heat accumulating type internal-combustion engine adopts has very large specific surface area, can be at some catalyzer of carrier regenerator surface attachment, three-way catalyst such as the conventional vent gas treatment of general internal-combustion engine, when combustion gas is discharged through heat retainer from expansion cylinder, because the effect of catalyzer makes hydrocarbon, the contaminant concentration such as carbon monoxide and nitrogen oxide reduce greatly.
The present invention than the advantage of prior art is;
There are higher efficiency of thermal cycle and specific power; Simple in structure, moving element is few, and cost is low, and good reliability is safeguarded little; Because burning is complete, and facilitate built-in catalyzer, pollutant emission is reduced; Air pressure is smaller, and engine combustion is steady, and moving element is few, makes vibration and noise little; The power adjustments of motor can directly be regulated by fuel straying quatity, has avoided the throttling loss of petrol engine closure, the efficiency while having improved partial load.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of embodiment of the present invention.
Fig. 2 is the structure principle chart of improvement project of the present invention.
Fig. 3 be compression cylinder, expansion cylinder and connecting tube connection diagram.
Fig. 4 is gas flow direction schematic diagram in compression cylinder compression process.
Fig. 5 is expansion cylinder exhaust and compression cylinder intake process gas flow direction schematic diagram.
In figure, serial number name is: 1, air inlet pipe, 2, scavenging pump, 3, scavenging port, 4, compression cylinder, 5, compression cylinder piston, 6, exhaust vent, 7, connecting tube, 8, fuel nozzle, 9, expansion cylinder, 10, expansion cylinder piston, 11, firing chamber, 12, heat retainer, 13, cooler
Embodiment
Now by reference to the accompanying drawings, to be embodied as example, the present invention will be further described.
As shown in Figure 1, this reciprocal heat accumulating type internal-combustion engine mainly comprises scavenging pump 2, compression cylinder 4, connecting tube 7, heat retainer 12, firing chamber 11 and expansion cylinder 9.The Placement of scavenging pump 2, compression cylinder 4, connecting tube 7 and expansion cylinder 9 as shown in Figure 3.The pressurized gas outlet of compression cylinder 4 with connecting tube 7 one end be connected, connecting tube 7 the other end be connected with expansion cylinder 9.The connection mouth of connecting tube 7 and expansion cylinder 9 is as the porting of expansion cylinder 9, and the gas inlet and outlet of expansion cylinder 9 is all passed through this connection mouth.Compression cylinder 4 middle parts are provided with scavenging port 3 and exhaust vent 6.Scavenging port 3 is connected with the outlet of scavenging pump 2, and air inlet pipe 1 is connected with scavenging pump 2 imports.Connecting tube 7, from close compression cylinder 4 one sides near expansion cylinder 9 one sides, sets gradually heat retainer 12 and firing chamber 11.On firing chamber 11, be provided with fuel nozzle 8.Heat retainer 12, for having the heat storage medium of porous channel, has intermittent heat absorption exothermic effects in thermodynamic cycle process.Heat retainer 12 is placed in the middle of the pipe of connecting pipe 7.
This engine working process is that compression cylinder piston 5 is up, its inner air is compressed, pressurized air flows out and enters connecting tube 7 from compressed air outlet, flow into again in the porous channel in heat retainer 12, medium generation heat exchange with heat retainer 12, compressed air temperature raises, and the medium temperature of heat retainer 12 reduces, and the gas flow direction of compression process as shown in Figure 4.Pressurized air after heating enters firing chamber 11, fuel enters firing chamber 11 by fuel nozzle 8 simultaneously, air and fuel reaction burning become high-temperature fuel gas, high-temperature fuel gas enters expansion cylinder by the porting of expansion cylinder 9, expansion cylinder piston 10 is descending from top dead center, and high-temperature fuel gas expands and does work.After acting process completes, expansion cylinder piston 10 is up, compression cylinder piston 5 is descending simultaneously, the higher combustion gas of temperature is flowed out by the porting of expansion cylinder 9, and oppositely, by firing chamber 11, now fuel nozzle 8 has cut out, combustion gas oppositely enters in the porous channel of heat retainer 12 again, the medium of heating heat retainer makes combustion gas self temperature reduce simultaneously, and combustion gas enters in compression cylinder 4.When compression cylinder piston 5 continues descending, scavenging port 3 and exhaust vent 6 are exposed, combustion gas is discharged extraneous by exhaust vent 6, through scavenging pump 2 precompressed airs, by scavenging port 3, flow in compression cylinder 4, the combustion gas of burning that makes to do work is discharged by exhaust vent 6, and new air enters in compression cylinder 4.In expansion cylinder 9 exhausts and compression chamber 4 intake processes, gas flow direction as shown in Figure 5.
The carrier regenerator surface attachment catalyzer of heat retainer 12, when combustion gas is discharged from expansion cylinder 9, in the time of cooling through heat retainer 12 heat absorption, because the effect of catalyzer makes unburnt hydrocarbon and the carbon monoxide in combustion gas, and the pollutant such as the nitrogen oxide producing in combustion process reduces.
The straight line motion of compression cylinder piston 5 and expansion cylinder piston 10 can be converted into the output that rotatablely moves by connecting rod or the oblique disk structure of traditional combustion engine.The power adjustments of motor can be directly fuel metering straying quatity as required.
Improvement project: as Fig. 2, increase cooler 13, be used for cooled compressed cylinder 4 pressurized air out, the impact of the heat retainer 12 that isolated temperature is higher simultaneously on compression cylinder 4.
Claims (9)
1. the reciprocal heat accumulating type internal-combustion engine of a scavenging pump additional-air inlet and exhaust, it comprises scavenging pump (2), compression cylinder (4), expansion cylinder (9), between the compressed air outlet that it is characterized in that described compression cylinder (4) and expansion cylinder (9) by being communicated with connecting tube (7), the interface that expansion cylinder (9) was connected with described connecting tube (7) is as the porting of expansion cylinder (9), in described connecting tube (7), place the gas of flowing through is carried out to intermittent reciprocating heat absorption, the heat retainer with porous runner (12) of heat release, in connecting tube (7) between heat retainer (12) and expansion cylinder (9) and/or in expansion cylinder (9), firing chamber (11) is set, firing chamber (11) is provided with corresponding fuel nozzle (8), compression cylinder (4) is provided with scavenging port (3) and exhaust vent (6), scavenging port (3) is connected with the outlet of scavenging pump (2).
2. the reciprocal heat accumulating type internal-combustion engine of scavenging pump additional-air inlet according to claim 1 and exhaust, is characterized in that the heat storage medium surface attachment of described heat retainer (12) reduces hydrocarbon, the catalyzer of carbon monoxide and nitrogen oxide.
3. the reciprocal heat accumulating type internal-combustion engine of scavenging pump additional-air inlet according to claim 1 and exhaust, is characterized in that by heat insulation layer, being completely cut off between described heat retainer (12) and the tube wall of connecting tube (7).
4. according to the reciprocal heat accumulating type internal-combustion engine of the scavenging pump additional-air inlet described in claim 1～3 any one and exhaust, it is characterized in that connecting tube (7) and the interface of expansion cylinder (9) are the porting of described expansion cylinder (9), this interface is all passed through in the air inlet and the exhaust that are expansion cylinder (9), the runner of air inlet and exhaust process is identical, and airflow direction is contrary.
5. according to the reciprocal heat accumulating type internal-combustion engine of the scavenging pump additional-air inlet described in claim 1～3 any one and exhaust, it is characterized in that the power of the reciprocal heat accumulating type internal-combustion engine of this scavenging pump additional-air inlet and exhaust is controlled by the fuel quantity of fuel nozzle (8).
6. according to the reciprocal heat accumulating type internal-combustion engine of the scavenging pump additional-air inlet described in claim 1～3 any one and exhaust, it is characterized in that setting up cooler (13) at the compressed air outlet of compression cylinder (4), the outlet of cooler (13) connects pipe (7) again.
7. according to the reciprocal heat accumulating type internal-combustion engine of the scavenging pump additional-air inlet described in claim 1～3 any one and exhaust, it is characterized in that setting up intercooler between scavenging pump (2) outlet and scavenging port (3).
8. according to the reciprocal heat accumulating type internal-combustion engine of the scavenging pump additional-air inlet described in claim 1～3 any one and exhaust, it is characterized in that the straight line motion of compression cylinder piston (5) and expansion cylinder piston (10) is converted into by connecting rod or oblique disk structure the output that rotatablely moves.
9. the reciprocal heat accumulating type internal-combustion engine of scavenging pump additional-air inlet according to claim 1 and exhaust, is characterized in that the heat storage medium of described heat retainer (12) is porous ceramics, wire gaze or corrugated sheet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410246599.7A CN104018931A (en) | 2014-05-19 | 2014-05-19 | Reciprocating heat accumulating type internal combustion engine using scavenging pump for auxiliary intake and exhaust |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410246599.7A CN104018931A (en) | 2014-05-19 | 2014-05-19 | Reciprocating heat accumulating type internal combustion engine using scavenging pump for auxiliary intake and exhaust |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109154193A (en) * | 2016-05-17 | 2019-01-04 | 德国航空航天中心 | The method of free piston installation and operation free piston installation |
| CN114294103A (en) * | 2021-12-26 | 2022-04-08 | 江苏预立新能源科技有限公司 | Be used for automobile engine to be convenient for abundant burning of petrol auxiliary device that admits air |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85105038A (en) * | 1985-06-29 | 1986-12-24 | 罗固事 | Protective valve for cut-off nlatural gas |
| CN102753806A (en) * | 2009-09-21 | 2012-10-24 | 思迪莱尔(简易有限公司) | Thermodynamic machine with stirling cycle |
| CN103089491A (en) * | 2011-10-27 | 2013-05-08 | 上海静迅电梯设备有限公司 | Micro-emission energy-saving engine master device recycling heat of tail gas by regenerative porous medium |
-
2014
- 2014-05-19 CN CN201410246599.7A patent/CN104018931A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85105038A (en) * | 1985-06-29 | 1986-12-24 | 罗固事 | Protective valve for cut-off nlatural gas |
| CN102753806A (en) * | 2009-09-21 | 2012-10-24 | 思迪莱尔(简易有限公司) | Thermodynamic machine with stirling cycle |
| CN103089491A (en) * | 2011-10-27 | 2013-05-08 | 上海静迅电梯设备有限公司 | Micro-emission energy-saving engine master device recycling heat of tail gas by regenerative porous medium |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109154193A (en) * | 2016-05-17 | 2019-01-04 | 德国航空航天中心 | The method of free piston installation and operation free piston installation |
| CN109154193B (en) * | 2016-05-17 | 2021-05-07 | 德国航空航天中心 | Free piston device and method for operating a free piston device |
| CN114294103A (en) * | 2021-12-26 | 2022-04-08 | 江苏预立新能源科技有限公司 | Be used for automobile engine to be convenient for abundant burning of petrol auxiliary device that admits air |
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Application publication date: 20140903 |