CN104018932A - Reciprocating heat accumulating type internal combustion engine for air inlet and air outlet through scavenging duct - Google Patents
Reciprocating heat accumulating type internal combustion engine for air inlet and air outlet through scavenging duct Download PDFInfo
- Publication number
- CN104018932A CN104018932A CN201410246605.9A CN201410246605A CN104018932A CN 104018932 A CN104018932 A CN 104018932A CN 201410246605 A CN201410246605 A CN 201410246605A CN 104018932 A CN104018932 A CN 104018932A
- Authority
- CN
- China
- Prior art keywords
- compression
- heat
- combustion engine
- air inlet
- type internal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Supercharger (AREA)
Abstract
A reciprocating heat accumulating type internal combustion engine for air inlet and air outlet through a scavenging duct comprises a compression air cylinder, a heat accumulator, a communicated pipe, a combustion chamber and an expansion air cylinder. The reciprocating heat accumulating type internal combustion engine is characterized in that the heat accumulator is located in a channel of the communicated pipe connecting the compression air cylinder and the expansion air cylinder, the compression air cylinder is divided into a pre-compression cavity and a compression cavity through a piston, and the pre-compression cavity and the compression cavity are connected through the scavenging duct. According to the basic operating principle, when the piston of the compression air cylinder moves towards the upper stopping point from the lower stopping point, the air is fed into the pre-compression cavity, the air in the compression cavity is compressed, the compressed air flows through the heat accumulator to be heated and enters the combustion chamber to be burned with the fuel, a piston of the expansion air cylinder moves downwards from the upper stopping point, and fuel gas expands and acts. When the piston of the air cylinder moves upwards, the piston of the compression air cylinder moves downwards, the acting fuel gas gets out of the expansion air cylinder and reversely passes a combustor and the heat accumulator reversely to heat the heat accumulator, the fuel gas temperature is reduced, the fuel gas enters the compression cavity and is exhausted through an exhaust outlet, fresh air enters the compression cavity through the scavenging duct, and a power circulation is finished.
Description
Technical field
The present invention relates to motor, is a kind of reciprocal heat accumulating type internal-combustion engine that utilizes scavenging air belt air inlet and exhaust.
Background technique
Motor generally refers to heat engine, be a kind of be the heat energy of engine interior working medium by fuel or other energy conversions, 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 condition 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, in compression process, there is the possibility of detonation, 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 entirety heavier.And the combustion process of diesel engine is taking diffusive combustion as main, and burning is also insufficient, there is 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 a kind of reciprocal heat accumulating type internal-combustion engine that utilizes scavenging air belt air inlet and exhaust.
This reciprocal heat accumulating type internal-combustion engine comprises compression cylinder, connecting tube, heat retainer, firing chamber and expansion cylinder, and its structure outline is that the pressurized gas of compression cylinder exports by being connected with expansion cylinder connecting tube.The interface while that described connecting tube is connected with expansion cylinder is as suction port and the relief opening of expansion cylinder, be called the porting of expansion cylinder herein, in the time that expansion cylinder piston moves to lower dead center, Working medium gas enters from described porting, 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 is divided into upper and lower two cavitys by piston, and upper cylinder is called compression chamber, and lower cylinder is called precompression chamber.Compression chamber is connected by scavenging air belt with precompression chamber, and cylinder middle part is provided with exhaust vent, and precompression has suction port on chamber, can be from external environment air amount, and suction port is provided with leaf valve.
The basic functional principle of this reciprocal heat accumulating type internal-combustion engine is in the time that compression cylinder piston moves from lower dead center to top dead center, precompression chamber volume increases, and pressure diminishes, because precompression chamber and external environment exist pressure reduction, leaf valve is opened, and air enters precompression chamber from the external world.Now, compression chamber volume diminishes, and the air in it further compresses, and exports outflow by pressurized gas, enters heat retainer.In the time that 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.In the time that expansion cylinder piston moves from lower dead center to top dead center, compression cylinder piston moves to lower dead center from top dead center, the combustion gas of expanding after doing manual work is flowed out from expansion cylinder, through the porous channel of heat retainer, heating heat retainer has reduced self temperature simultaneously, enter in the compression chamber of compression cylinder, precompression chamber volume dwindles simultaneously, and the leaf valve of suction port cuts out because internal pressure is greater than external pressure, and the gas in precompression chamber is compressed.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 that seals and scavenging air belt outlet are exposed gradually, owing to there is no blocking of piston, waste gas in compression chamber is discharged from exhaust vent, the gas in precompression chamber flows to compression chamber by scavenging air belt, further combustion gas, and poured fresh air to compression chamber.In the time that compression cylinder piston moves again from lower dead center to top dead center, scavenging road junction and exhaust vent are blocked by piston gradually, and in compression chamber, working medium 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.
Between heat retainer and connecting tube tube wall, place heat insulator, to reduce heat retainer heat transfer loss to external world.
Improvement project: be connected a cooler between compression cylinder outlet and heat retainer.In the time of 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.
Adopt after heat retainer, improved the air temperature that enters firing chamber, reduced the temperature of motor discharge combustion gas, therefore increased substantially the thermal efficiency of this reciprocal heat accumulating type internal-combustion engine.In addition, in the time of 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, in the time that 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 the valve of air-flow turnover, has reduced the restriction loss in gas flow process, has improved reliability.Compression chamber has adopted scavenging air belt, has utilized piston displacement to carry out air inlet and exhaust to the keying function of scavenging air belt outlet 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, such as the three-way catalyst of the conventional vent gas treatment of general internal-combustion engine, in the time that 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.
Brief description of the drawings
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 the air inlet of precompression chamber and compression chamber compression process.
Fig. 5 is gas flow direction schematic diagram in expansion cylinder exhaust and compression chamber intake process.
In figure, serial number name is: 1, precompression chamber, 2, scavenging air belt, 3, compression cylinder, 4, compression chamber, 5, connecting tube, 6, heat retainer, 7, compression cylinder piston, 8, exhaust vent, 9, leaf valve, 10, suction port, 11, fuel nozzle, 12, firing chamber, 13, expansion cylinder piston, 14, expansion cylinder, 15, 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 compression cylinder 3, connecting tube 5, heat retainer 6, firing chamber 12 and expansion cylinder 14.The Placement of compression cylinder 3, connecting tube 5 and expansion cylinder 14 as shown in Figure 3.The pressurized gas outlet of compression cylinder 3 with connecting tube 5 one end be connected, connecting tube 5 the other end be connected with expansion cylinder 14.The connection mouth of connecting tube 5 and expansion cylinder 14 is as the porting of expansion cylinder 14, and the gas inlet and outlet of expansion cylinder 14 is all passed through this connection mouth.The compressed cylinder piston 7 of compression cylinder 3 is divided into precompression chamber 1 and compression chamber 4 two-part.On precompression chamber, have suction port 10, suction port 10 is provided with leaf valve 9.Compression chamber 4 and precompression chamber 1 are communicated with by scavenging air belt 2.Connecting tube 5, from close compression cylinder 3 one sides near expansion cylinder 14 1 sides, sets gradually heat retainer 6 and firing chamber 7.On firing chamber 7, be provided with fuel nozzle 11.Heat retainer 6, for having the heat storage medium of porous channel, has intermittent heat absorption exothermic effects in thermodynamic cycle process.Heat retainer 6 is placed in the middle of the pipe of connecting pipe 5.
This engine working process is that compression cylinder piston 7 is up, and precompression chamber 1 internal capacity increases, and pressure reduces, and leaf valve 9 is opened, and air flows into precompression chamber 1 from suction port 10.The volume of compression chamber 4 reduces, its internal gas pressure increases, and flow out and enter connecting tube 5 from pressurized gas outlet, flow into again in the porous channel in heat retainer 6, medium generation heat exchange with heat retainer 6, compressed air temperature raises, and the medium temperature of heat retainer 6 reduces, and the gas flow direction of the air inlet of precompression chamber and compression chamber compression process as shown in Figure 4.Pressurized air after heating enters firing chamber 12, fuel enters firing chamber 12 by fuel nozzle 11 simultaneously, air and fuel reaction burning become high-temperature fuel gas, high-temperature fuel gas enters expansion cylinder by the porting of expansion cylinder 14, expansion cylinder piston 13 is descending from top dead center, and high-temperature fuel gas expands and does work.After acting process completes, expansion cylinder piston 13 is up, compression cylinder piston 7 is descending simultaneously, the combustion gas that temperature is higher is flowed out by the porting of expansion cylinder 14, and oppositely, by firing chamber 12, now fuel nozzle 11 has cut out, combustion gas oppositely enters in the porous channel of heat retainer 6 again, the medium of heating heat retainer makes combustion gas self temperature reduce simultaneously, and combustion gas enters in compression chamber 4.When compression cylinder piston 7 continues descending, outlet and the exhaust vent 8 of scavenging air belt 2 are exposed, be communicated with compression chamber 4, combustion gas is discharged extraneous by exhaust vent 8, air in precompression chamber 1 flows into compression chamber by scavenging air belt 2, the combustion gas of burning that makes to do work is discharged by exhaust vent 8, and new air enters in compression chamber 4.In expansion cylinder 14 exhausts and compression chamber 4 intake processes, gas flow direction as shown in Figure 5.
The carrier regenerator surface attachment catalyzer of heat retainer 6, in the time that combustion gas is discharged from expansion cylinder 14, cooling through heat retainer 6 time, 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 7 and expansion cylinder piston 13 can be converted into the output that rotatablely moves by the connecting rod of traditional combustion engine or oblique disk structure.The power adjustments of motor can be directly fuel metering straying quatity as required.
Improvement project: as Fig. 2, increase cooler 15, be used for cooled compressed chamber 4 pressurized air out, the impact of the heat retainer 6 that isolated temperature is higher simultaneously on compression chamber 4.
Claims (9)
1. one kind is utilized the reciprocal heat accumulating type internal-combustion engine of scavenging air belt air inlet and exhaust, it comprises compression cylinder (3), expansion cylinder (14), it is characterized in that between the compressed air outlet of described compression cylinder (3) and expansion cylinder (14) by being communicated with connecting tube (5), the interface that expansion cylinder (14) was connected with described connecting tube (5) is as the porting of expansion cylinder (14), in described connecting tube (5), place the gas of flowing through is carried out to intermittent reciprocating heat absorption, the heat retainer with porous runner (6) of heat release, in connecting tube (2) between heat retainer (6) and expansion cylinder (14) and/or in expansion cylinder (14), firing chamber (12) is set, firing chamber (12) is provided with corresponding fuel nozzle (11), the compressed cylinder piston of compression cylinder (3) (7) is divided into compression chamber (4) and precompression chamber (1), precompression chamber (1) is provided with suction port (10), compression chamber (4) is communicated with by scavenging air belt (2) with precompression chamber (1), compression chamber (4) is provided with exhaust vent (8).
2. the reciprocal heat accumulating type internal-combustion engine that utilizes scavenging air belt air inlet and exhaust according to claim 1, is characterized in that described suction port (10) is provided with leaf valve (9).
3. the reciprocal heat accumulating type internal-combustion engine that utilizes scavenging air belt air inlet and exhaust according to claim 1, is characterized in that the heat storage medium surface attachment of described heat retainer (6) reduces hydrocarbon, the catalyzer of carbon monoxide and nitrogen oxide.
4. the reciprocal heat accumulating type internal-combustion engine that utilizes scavenging air belt air inlet and exhaust according to claim 1, is characterized in that being completely cut off by heat insulation layer between described heat retainer (6) and the tube wall of connecting tube (5).
5. according to the reciprocal heat accumulating type internal-combustion engine that utilizes scavenging air belt air inlet and exhaust described in claim 1～4 any one, it is characterized in that connecting tube (5) and the interface of expansion cylinder (14) are the porting of described expansion cylinder (14), this interface is all passed through in the air inlet and the exhaust that are expansion cylinder (14), the runner of air inlet and exhaust process is identical, and airflow direction is contrary.
6. according to the reciprocal heat accumulating type internal-combustion engine that utilizes scavenging air belt air inlet and exhaust described in claim 1～4 any one, it is characterized in that the power of this reciprocal heat accumulating type internal-combustion engine that utilizes scavenging air belt air inlet and exhaust is controlled by the fuel quantity of fuel nozzle (7).
7. according to the reciprocal heat accumulating type internal-combustion engine that utilizes scavenging air belt air inlet and exhaust described in claim 1～4 any one, it is characterized in that setting up cooler (15) at the compressed air outlet of compression cylinder (3), the outlet of cooler (15) connects pipe (5) again.
8. according to the reciprocal heat accumulating type internal-combustion engine that utilizes scavenging air belt air inlet and exhaust described in claim 1～4 any one, it is characterized in that the straight line motion of compression cylinder piston (7) and expansion cylinder piston (13) is converted into by connecting rod or oblique disk structure the output that rotatablely moves.
9. the reciprocal heat accumulating type internal-combustion engine that utilizes scavenging air belt air inlet and exhaust according to claim 1, is characterized in that the heat storage medium of described heat retainer (6) is porous ceramics, wire gaze or corrugated sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410246605.9A CN104018932A (en) | 2014-05-19 | 2014-05-19 | Reciprocating heat accumulating type internal combustion engine for air inlet and air outlet through scavenging duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410246605.9A CN104018932A (en) | 2014-05-19 | 2014-05-19 | Reciprocating heat accumulating type internal combustion engine for air inlet and air outlet through scavenging duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104018932A true CN104018932A (en) | 2014-09-03 |
Family
ID=51435879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410246605.9A Pending CN104018932A (en) | 2014-05-19 | 2014-05-19 | Reciprocating heat accumulating type internal combustion engine for air inlet and air outlet through scavenging duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104018932A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217619A (en) * | 2022-03-17 | 2022-10-21 | 广州汽车集团股份有限公司 | Scavenging device, control method thereof and automobile |
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 CN201410246605.9A patent/CN104018932A/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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217619A (en) * | 2022-03-17 | 2022-10-21 | 广州汽车集团股份有限公司 | Scavenging device, control method thereof and automobile |
| CN115217619B (en) * | 2022-03-17 | 2023-08-08 | 广州汽车集团股份有限公司 | Scavenging device, control method thereof and automobile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201560839U (en) | Internal combustion stirling engine | |
| CN100347422C (en) | Continuous combustion constant power engine | |
| CN101900027A (en) | Adopt the internal-combustion engine of dual compression and dual expansion processes | |
| WO2008148256A1 (en) | Two-stroke engine | |
| CN110529231B (en) | Compression ignition engine system using single methanol fuel and operation method thereof | |
| CN104018931A (en) | Reciprocating heat accumulating type internal combustion engine using scavenging pump for auxiliary intake and exhaust | |
| CN101251041B (en) | Catalytic conversion technique for engine jar | |
| CN108869027A (en) | A kind of spray oxygen two-stroke internal combustion engine and its operation method | |
| CN102748126B (en) | Valve control common cylinder U flow piston thermal power system and improve the method for its efficiency | |
| CN1740532A (en) | Constant volume burning internally cooling internal combustion engine | |
| CN104018932A (en) | Reciprocating heat accumulating type internal combustion engine for air inlet and air outlet through scavenging duct | |
| CN201080851Y (en) | Back heating engine | |
| CN101608569A (en) | Changeable-stroke engine with cylinder outside compression | |
| CN109469557A (en) | A kind of continuous burning piston engine of adaptively calming the anger | |
| CN103993955A (en) | Reciprocating heat accumulating type internal combustion engine | |
| CN203962143U (en) | Barrel-shaped reciprocal heat accumulating type internal-combustion engine | |
| CN204126763U (en) | A kind of silicone core bundling tube external-burning engine | |
| CN102767422A (en) | Internal-combustion gas compressor | |
| CN201351527Y (en) | Air inlet and exhaust device of medium speed diesel engine | |
| CN101839165B (en) | Boundary compression engine | |
| CN104632362B (en) | Exhaust gas expanding mechanism for two-stroke pure oxygen engine | |
| CN220815827U (en) | Compression ignition engine | |
| CN103557070A (en) | Heat-absorption type dry ice engine | |
| CN202381166U (en) | Annular efficient engine | |
| CN103590918B (en) | Ventilation entropy cycle engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140903 |
|
| WD01 | Invention patent application deemed withdrawn after publication |