CN1014342B - Two-stroke piston internal combustion engine - Google Patents
Two-stroke piston internal combustion engineInfo
- Publication number
- CN1014342B CN1014342B CN 90104469 CN90104469A CN1014342B CN 1014342 B CN1014342 B CN 1014342B CN 90104469 CN90104469 CN 90104469 CN 90104469 A CN90104469 A CN 90104469A CN 1014342 B CN1014342 B CN 1014342B
- Authority
- CN
- China
- Prior art keywords
- piston
- air
- cylinder
- work done
- crankcase
- 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.)
- Expired
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 17
- 230000008676 import Effects 0.000 claims description 7
- 239000007789 gas Substances 0.000 abstract description 47
- 239000002912 waste gas Substances 0.000 abstract description 7
- 239000000446 fuel Substances 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000006835 compression Effects 0.000 description 12
- 238000007906 compression Methods 0.000 description 12
- 239000000203 mixture Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The two-stroke piston type internal combustion engine includes crankcase, crank frame, slide block and crankshaft, and the opposed cylinders on two sides of crankcase, piston in the cylinder, working cavity with variable volume and working cavity are set, and is characterized by that its air supply system includes two air-sucking portions and a shared air-conveying portion, the interior of moving member is divided into two air-storing chambers, and the air-storing volume is greater than piston discharge capacity, and the opening and closing of air inlet for compressing mixed gas and inlet and outlet of ignition chamber are controlled by piston self-body, and the opening and closing of air outlet and waste gas exhaust outlet are controlled by self-control double-acting valve. The internal combustion engine has the advantages of simple structure, low cost, convenient maintenance, capability of burning various fuels, less waste gas pollution, high heat efficiency, volumetric efficiency and mechanical efficiency.
Description
The present invention relates to the piston type two stroke IC engine.
In the lean-burn formula motor of prior art, branch open cycle lean-burn formula motor and split-cycle engine are arranged, both design principles are identical, and the latter's difference promptly is to be transformed into four-stroke in same cylinder in two cylinders or to be divided in two chambeies in the same cylinder to carry out.Even lean-burn formula motor has fuel-economizing and purifying exhaust air two big advantages, and a large amount of research and experiment have been done, but do not determine also that until now practical type is for social demand, its reason is: (1) is transformed into common carburetor type in the cylinder or spray pattern in the suction tude, device and maintenance expenses are increased, and adjusting method is quite difficult and complicated; (2) as not adopting fuel to spray, promptly adopt two Carburetors fueling respectively,, will tightly consider that this automatic adjustment technologies is quite difficult to automatic adjustment in order to obtain appropriate proportions of ingredients at concubine; (3) for the split structure, proportions of ingredients in its concubine is to add that by its aeration quantity the fuel quantity of supply and the mixed gas that flows into from the main chamber mix mutually, as practical motor, it is difficult that air stream, fuel feed and different load, speed are adapted; (4) for unified formula structure lean-combustion engine, the position of optium concentration mixed gas changes with the variation of engine load speed in the firing chamber, therefore organize layering comparatively difficult, also be difficult to guarantee when different operating mode, start function smooth combustion weak mixture to gas.Will all there be many an open questions of going back in all types of lean-combustion engine of prior art as practical motor aspect structure, mechanism, control, exchange, cost and the expense in a word.
U. S. Patent 4,715,336, the application on February 26th, 86 has proposed a kind of quartastroke engine that has gas handling system, its whole air supply system is made up of suction system and transmission system, though have the advantage of improving flow of aerating air, still have following defective: (1) whole air supply system can only provide a kind of mixed gas of ratio, is difficult to realize lean combustion; (2) its inner chamber (being active chamber) is only done compression in advance to mixed gas, and the carrying out of four strokes and to finish all be in exocoel (being work done cavity), so be difficult to make full use of the volumetric efficiency of cylinder; (3) keying of combi inlet port in the firing chamber and exhaust vent all is by the rotary-type slide valve control that has transmission device, thereby makes the control gear complexity.
The objective of the invention is to overcome the defective of prior art and provide a kind of and existing lean-burn internal combustion engine to compare to society: structure is simpler, cost is lower, maintenance is more convenient, the separately circuit two-stroke piston type internal combustion engine that pluralities of fuel, exhaust emission pollution a kind of thermal efficiency, volumetric efficiency, the mechanical efficiency still less of burning is higher.
The present invention designs according to the lean-burn mode of new idea, is promptly mixed and rare compressed mixed gas of forming by two strands of compressed mixed gas to firing chamber supply and load and speed are corresponding.And what supply with to igniting chamber is not with the dense compressed mixed gas of load and velocity variations.Again with being lighted rare compressed mixed gas by the combustion gas of spark ignitor in the igniting chamber, thereby make the gas external work done of expanding.
Two-stroke piston type internal combustion engine comprises a crankcase, be positioned at the slide block and the bent axle of crankcase crank frame, have at least on two same axis, be positioned at the opposed cylinder of two sides about crankcase, each cylinder has inner dead point and outer dead point, inner carrier in the cylinder is reciprocating between inside and outside stop, and with 180 ° of phase difference work.The inside of whole to-and-fro motion member is separated into has two gas storage chambers at least, and in order to storing dense and to cross rare compressed mixed gas, and the gas storage volume is greater than piston swept volume.Each cylinder has at least one active chamber and work done cavity of variable volume; Active chamber is in order to carry out air-breathing and compression to dense or mistake weak mixture, and the suction one-way valve in the active chamber is arranged on active chamber and covers, and extrudes one-way valve and is arranged on the piston.Work done cavity expands and exhaust process in order to finish.Air supply system sucks fresh air respectively the active chamber of cylinder and by gas delivery part compressed mixed gas is transferred to work done cavity, and air supply system respectively has air-breathing part and two shared gas delivery parts of work done cavity of independently returning oneself by each active chamber and forms.
Each cylinder outer end inner wall is provided with suction port and at least one igniting chamber and the igniting chamber import and export of at least two compressed mixed gas, and their keying is controlled by piston self.Simultaneously, each cylinder outer end inner wall is provided with the air outlet of at least two compressed mixed gas and work done cavity and covers and be provided with at least one exhaust vent, and each is controlled their keying by the self-controlled type double-purpose valve.
Two-stroke piston type internal combustion engine by the present invention's design, one way stop peturn valve is adopted in the import and export of mixed gas in active chamber, and the double-purpose valve control of self-controlled type is adopted in the keying of the outlet of the compressed mixed gas of work done cavity and outlet port, need not other transmission device control.The inside of whole reciprocating member is divided into two gas storage chambers and replaces the ad hoc gas storage chambers of prior art, thereby simplified structure makes that moving element is few, structure is extremely simple, compares with existing internal-combustion engine, and the expense of cost, maintenance, maintenance can descend significantly.The present invention does not have fixing firing chamber, and working chamber volume is less than the work done cavity volume, and it is more thorough that the more abundant waste gas of waste expansion is got rid of, no matter can both burn weak mixture under starting and each operating mode of idling, thereby makes the harmful components in the waste gas reduce, purify waste gas.Thereby the present invention reaches the purpose of regulating compression ratio by the pressure of regulating in active chamber or the gas storage chamber, have higher compression ratio and higher volumetric efficiency, mechanical efficiency, but fuel saving, can more conveniently adopt advanced ceramic metallic material, employing hydraulic transmission that can be more convenient, the weak mixture that can burn simultaneously, the thermal efficiency can be brought up to about 35% from existing 25%.
Description of drawings.
Accompanying drawing is the vertical sectional structure schematic representation of the present invention.
Be to describe in further detail below according to above-mentioned accompanying drawing embodiment.
As shown in drawings, two-stroke piston type internal combustion engine has a crankcase (14), and the crank frame (41) that is positioned at crankcase (14) has reciprocating slide block (43), and the crank of bent axle (13) is connected with slide block (43).The cylinder (9), (18) that are positioned at two side symmetric arrangement about crankcase (14) on two same axis are arranged, bent axle (13) is arranged in the centre that crankcase (14) is centered close to two cylinders (9), (18), and two cylinders (9), (18) and crankcase (14) are by Sealing and by isolating seal.
Has one in each cylinder (9), (18) near the inner dead point D of crankcase (14) with away from the outer dead point A of crankcase (14), piston (47), (35) to-and-fro motion between inner dead point D and outer dead point A are arranged in cylinder (9), (18), and two pistons (47), (35) are with 180 ° phase difference work.Extend along coaxial direction piston rod (45) on piston (47), (35), (40), one end and piston (47), (35) are rigidly connected, the other end and crank frame (41) are rigidly connected, their threes constitute whole to-and-fro motion member, and its inner space is separated into two gas storage chambers (12), (42).Each gas storage volume is greater than piston swept volume, each cylinder (9), (18) by piston (47), (35) be divided into two chambeies of variable volume, one is adjacent with crankcase (14), be positioned at piston (47), (35) and cylinder (9), (18) be called active chamber (46) between the inner inner dead point D, (38), one is away from crankcase (14), be positioned at piston (47), (35) and cylinder (9), (18) be called work done cavity (51) between the outer end outer dead point A, (20), active chamber (46), (38) with work done cavity (51), (20) cylinder (9) is depended in volume change, (18) inner carrier (47), (35) residing position.There are active chamber lid (44), (39) in the inner of each cylinder (9), (18), cover diaphragm type and sucked one-way valve (11), (16), being positioned on the piston (47), (35) of active chamber (46), (38) one side has diaphragm type to extrude one-way valve (8), (37), suck one-way valve (11), (16) and link to each other with separately suction tude (10), (15), extrusion one-way valve (8), (37) link to each other with separately gas storage chamber (12), (42).There are work done cavity lid (2), (28) in the outer end of each cylinder (9), (18), has covered self-controlled type double-purpose valve (1), (32), and they link to each other with relief opening (52), (31) respectively.Self-controlled type double-purpose valve (1), (32) are made up of the collision block (19) that is arranged on spring (29), spring seat (30), valve valve (26), valve block (24), the buffer cell (27) on work done cavity lid (2), (28) and is arranged on piston (47), (35) top.
Each cylinder (9), (18) outer end inner wall are provided with two suction port (6), (49), (21), (34) and two igniting chambers (4), (23) and two igniting chambers dense and two rare compressed mixed gas of mistake and import and export (5), (22), all become symmetric arrays, their keying is controlled by piston self.Suction tude (10), (15) are used to allow dense or the mistake weak mixture flows into active chamber (38), (46) from the outside.
Each cylinder (9), (18) outer end inner wall are provided with air outlet (3), (50), (25), (33) of two dense and two rare compressed mixed gas of mistake, become symmetric arrays, work done cavity lid (2), (28) are provided with an outlet port (52), (31), this relief opening is used for allowing the waste gas of work done cavity (51), (20) discharge the outside, and their keying is by the above self-controlled type double-purpose valve of having stated (1), (32) control.
Air supply system of the present invention has air-breathing part and two work done cavities (51), a shared gas delivery part of (20) of independently returning oneself separately by each active chamber (46), (38) and forms.
One of two air-breathing part is formed by sucking one-way valve (11) and suction tude (10), and another also is made up of suction one-way valve (16) and suction tude (15).Shared gas delivery part is made up of outlet (7), (48) (17), (36) and each work done cavity (51), suction port (6), (49) (21), (34) air outlet (3), (50), (25), (33) and igniting chamber import and export (5) on (20) inwall (being cylinder (9), (18) outer end inner wall), (22) that extrude on one-way valve (8), (37), gas storage chamber (12), (42) piston (47), (35).
Course of action of the present invention from accompanying drawing as can be known, suppose that piston moves from left to right: when piston (47) is in the stop left side, outer end A point and moves from left to right, work done cavity (51) exhaust stroke just finishes, the beginning expansion stroke, self-controlled type double-purpose valve (1) is closed, piston (47) outlet (7), (48) with work done cavity (51) inwall on air outlet (3), (50) communicate, dense and excessively rare compressed mixed air to open beginning enters in the work done cavity (51), its active chamber (46) suction stroke just finishes, the beginning compression stroke, piston this moment (35) is in inner stop the right D point, its work done cavity (20) expansion stroke just finishes, the beginning exhaust stroke, self-controlled type double-purpose valve (32) is opened, work done cavity (20) communicates with relief opening (31), waste gas is discharged outside, air outlet (25) on work done cavity (20) inwall is obstructed with work done cavity (20), its active chamber (38) compression stroke just finishes, the beginning suction stroke is crossed weak mixture and is inhaled into active chamber (38) by sucking one-way valve (16) from suction tude (15).
When piston (47) moves to left side B point, work done cavity (51) is imported and exported (5) with igniting chamber (4) and is communicated, poured work done cavity (51) by the dense compressed mixed gas of spark ignitor, light rare compressed mixed gas fast, its active chamber (46) is in compression stroke, the work done cavity (20) of piston this moment (35) still is in exhaust stroke, and active chamber (38) still is in suction stroke.
When piston (47) moves to left side C point, suction port (6), (49) on the outlet (7) of piston (47), (48) and work done cavity (51) inwall are obstructed, and rare compressed mixed gas has just all been lighted expansion working, its active chamber (46) still is in compression stroke, at this moment, the work done cavity (20) of piston (35) still is in exhaust stroke and active chamber (38) is in suction stroke.
When piston (35) moves to the right C point, its outlet (17), (36) with work done cavity (20) inwall on suction port (21), (34) communicate, dense and cross rare compressed mixed gas and enter in the passage of work done cavity (20) between importing and exporting, and the air outlet on the inwall (25), (33) closed by the valve block on the self-controlled type double-purpose valve (24), collision block (19) on piston (35) top walks to when making double-purpose valve (32) be about to closed condition, valve block (24) just will export (25), (33) open, dense with cross weak mixture from outlet (25), (33) enter work done cavity (20).Its active chamber (38) still is in suction stroke, at this moment, the work done cavity (51) of piston (47) still is in expansion stroke, and the rich mixture in its active chamber (46) begins to be pressed in the gas storage chamber (12) by the extrusion one-way valve (8) on the piston (47).
When piston (35) moves to the right B point, its dense compressed mixed gas outlet (17) communicates with the import and export (22) of igniting chamber (23), dense compressed mixed gas enters igniting chamber (23), its active chamber (38) still is in suction stroke, and the work done cavity (51) of piston this moment (47) still is in expansion stroke and active chamber (46) still is in compression stroke.
When piston (35) moves to stop the right, outer end A point, work done cavity (20) exhaust stroke finishes, the beginning expansion stroke, and active chamber (38) suction stroke finishes, the beginning compression stroke, and piston this moment (47) is in inner stop left side D point, its work done cavity (51) expansion stroke finishes, the beginning exhaust stroke, and active chamber (46) compression stroke finishes, the beginning suction stroke.Rich mixture is inhaled into active chamber (46) from suction tude (10) by sucking one-way valve (11).
When piston (47), (35) when moving from right to left, working state process when piston (47) repeats piston (35) from inner stop toward the motion of outer end stop, and the working state process of piston (35) when repeating piston (47) from the outer end stop toward inner stop motion.(the inner) moves to the inner (outer end) from the outer end for piston (47), (35), moves to outer end (the inner) then again, promptly finished a work cycle, i.e. air inlet, compression, expansion, exhaust four stroke.180 ° of two-piston (47), (35) phase differences, and the to-and-fro motion of piston (47), (35) is converted into rotatablely moving of bent axle (13) by slide block type bent axle (13) mechanism, a work cycle is finished in piston (47), (35), 360 ° of bent axle (13) rotations.The control of mixed gas turnover all is the diaphragm type one way stop peturn valve of control control automatically with the gas pressure of itself in piston (47), (35) active chamber (46), (38).
And work done cavity (51), (20) self-controlled type double-purpose valve (1) in, (32) control procedure is: when piston (47) or (35) will be near the outer end stops, they separately the collision block (19) on the top contact with buffer cell (27), when gas pressure in the buffer cell (27) is higher than control valve inner spring (29) pressure, then valve cuts out, this moment work done cavity (51), (20) each is obstructed with relief opening (52) (31), and with work done cavity (51), (20) the dense and air outlet (3) of crossing rare compressed mixed gas on the inwall, (50) or (25), (33) communicate.When piston (47), (35) during,, make valve keep closed condition because the pressure of gas is higher than control valve spring (29) pressure from outer end stop (left A or right A) toward inner stop (left D or right D).When piston (47), (35) move to inner stop (left D or right D), the pressure of the expanding gas in work done cavity (51), (20) is lower than self-controlled type double-purpose valve (1) or (32) inner spring (29) pressure, opening of valves then, this moment work done cavity (51) or (20) communicate with relief opening (52), (31), and with work done cavity (51) or (20) inwall on dense and the mistake rare compressed mixed gas air outlet (3), (50) or (25), (33) obstructed.
Claims (3)
1, a kind of two-stroke piston type internal combustion engine, include a crankcase (14), be positioned at the slide block (43) and the bent axle (13) of crankcase (14) crank frame (41), be positioned at the opposed cylinder (9) of two sides about crankcase (14) at least two same axis, (18), each cylinder has one near the inner dead point D of crankcase (14) with away from the outer dead point A of crankcase (14), each cylinder (9), one piston (47) is arranged (18), (35) to-and-fro motion between inner dead point D and outer dead point A, two pistons (47), (35) be phase difference work with 180 °, each piston (47), (35) piston rod (45), (40) extend along coaxial direction, one end and piston (47), (35) connect and the other end is connected with crank frame (41), each cylinder (9), (18) has at least one active chamber (46) of variable volume, (38) and a work done cavity (51), (20), the active chamber of cylinder (46), (38) seal with respect to crankcase (14), air supply system sucks cylinder (9) respectively with fresh air, (18) active chamber (46), (38) and by gas delivery part compressed mixed gas is transferred to work done cavity (51), (20), it is characterized in that:
A, whole to-and-fro motion member comprise that the inside of piston (47), (35), piston rod (45), (40), crank frame (41) is separated at least two gas storage chambers (12), (42), and each gas storage volume is greater than piston swept volume;
B, each cylinder (9), (18) outer end inner wall are provided with suction port (6), (49) and (21), (34) and at least one igniting chamber (4) and (23) and the igniting chamber import and export (5) and (22) of at least two compressed mixed gas, and their keying is controlled by piston self;
C, each cylinder (9), (18) outer end inner wall are provided with air outlet (3), (50) and (25), (33) and the work done cavity lid (2) of at least two compressed mixed gas, exhaust vent (52) and (31) that (28) are provided with at least one, and each is controlled their keying by self-controlled type double-purpose valve (1), (32);
D, in active chamber (46), (38), be separately positioned on the active chamber lid (44) and (39), extrude one-way valve (8) and (37) and be separately positioned on the piston (47) and (35) that work moves sucking one-way valve (11) and (16);
E, air supply system have air-breathing part and two work done cavities (51), (20) the shared gas delivery part of independently returning oneself by each active chamber (46), (38) and form.
2, internal-combustion engine as claimed in claim 1 is characterized in that self-controlled type double-purpose valve (1), (32) are made up of the collision block (19) that is arranged on spring (29), spring seat (30), valve valve (26), valve block (24), the buffer cell (27) on work done cavity lid (2), (28) and is arranged on piston (47), (35) top.
3, internal-combustion engine as claimed in claim 1, it is characterized in that one of described air-breathing part forms by sucking one-way valve (11) and suction tude (10), another is formed by sucking one-way valve (16) and suction tude (15), and described shared gas delivery part is by extruding one-way valve (8), (37), gas storage chamber (12), (42), piston (47), (35) outlet on (7), (48), (17), (36), work done cavity (51), (20) suction port on the inwall (6), (49), (21), (34), air outlet (3), (50), (25), (33) and igniting chamber import and export (5), (22) form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90104469 CN1014342B (en) | 1990-06-15 | 1990-06-15 | Two-stroke piston internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90104469 CN1014342B (en) | 1990-06-15 | 1990-06-15 | Two-stroke piston internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1047554A CN1047554A (en) | 1990-12-05 |
| CN1014342B true CN1014342B (en) | 1991-10-16 |
Family
ID=4878577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90104469 Expired CN1014342B (en) | 1990-06-15 | 1990-06-15 | Two-stroke piston internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1014342B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100590305C (en) * | 2003-06-25 | 2010-02-17 | 先进动力科技公司 | Internal combustion engine |
| CN100335761C (en) * | 2004-03-15 | 2007-09-05 | 谢晓山 | Cylinder lateral placed reciprocating internal combustion engine with concatemer |
| CN103758639B (en) * | 2010-06-02 | 2016-06-29 | 靳北彪 | Direct-acting valve engine |
| CN101975110A (en) * | 2010-10-08 | 2011-02-16 | 舒锦海 | Gear transmission (OPOC-Opposed Pistons Opposed Cylinders) internal-combustion engine |
| CN102182556A (en) * | 2011-03-10 | 2011-09-14 | 舒锦海 | Clash gear internal combustion engine |
| CN205225454U (en) * | 2015-06-30 | 2016-05-11 | 郑安庆 | Shaft type connecting rod transmission system and opposition piston engine |
| CN106194421A (en) * | 2016-08-23 | 2016-12-07 | 李福祥 | Air compression Special straight-line reciprocating movement engine |
-
1990
- 1990-06-15 CN CN 90104469 patent/CN1014342B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1047554A (en) | 1990-12-05 |
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