CN1007443B - Method by load change in two-stroke verbernnungskraftmaschine and verbernnungskraftmaschine by exercise of this method - Google Patents
Method by load change in two-stroke verbernnungskraftmaschine and verbernnungskraftmaschine by exercise of this methodInfo
- Publication number
- CN1007443B CN1007443B CN 86103240 CN86103240A CN1007443B CN 1007443 B CN1007443 B CN 1007443B CN 86103240 CN86103240 CN 86103240 CN 86103240 A CN86103240 A CN 86103240A CN 1007443 B CN1007443 B CN 1007443B
- Authority
- CN
- China
- Prior art keywords
- crankcase
- ventilation road
- ventilation
- cylinder
- stroke
- 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
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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
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/20—Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports not provided for in, or of interest apart from, subgroups F02B25/02 - F02B25/18
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
1. A method of scavenging a two-stroke reverse-flow scavenged engine comprising a piston-controlled exhaust passage and two or more primary as well as secondary scavenge passages on either side of the said exhaust passage, through which the fresh charge is delivered to the cylinder by means of a crankcase pump, a flow being generated at the beginning of the scavenging process by the primary scavenge passages located on either side of the exhaust passage in the immediate vicinity of the latter, which will prevent the fresh charge from entering the exhaust passage, wherein during the downward stroke of the piston the intake ports of the two or more primary scavenge passages are uncovered at a time when the pressure in the cylinder still is higher than in the crankcase, inducing the exhaust gas to flow into said scavenge passages and to force back the fresh charge contained therein without entering the crankcase itself, and wherein upon a drop of the pressure in the cylinder below the pressure level in the crankcase a connection is established between the primary scavenge passages and the crankcase, the intake ports of the two or more secondary scavenge passages being uncovered at the same time, such that the cylinder is scavenged and filled with fresh charge, the exhaust gas admitted into the primary scavenge passages before being discharged again due to a reversal of pressures, forming a barrier against the escape of fresh charge through the exhaust port, upon which the fresh charge will be discharged through the said primary scavenge passages.
Description
The present invention relates to a kind of reverseflow type two stroke IC engine, it comprises the air outlet flue and at least two the ventilation roads that are provided with in the both sides of air outlet flue that are subjected to piston control, by crankcase the incoming mixture that sucks is sent into cylinder through the ventilation road.
US Patent specification has disclosed a kind of two stroke IC engine No. 4253433.This internal-combustion engine has two groups and connects and composes the crankcase of crankcase and the ventilation road of cylinder.Directly on a ventilation road that is provided with in the face of air outlet flue, fuel and AIR MIXTURES enter internal-combustion engine by this import for import, and import is opened in about center in ventilation road, are in the road of taking a breath and enter between the suction port and its end that leads to crankcase of cylinder.Crankcase is led in another import, thus the air IC engine supply.In addition two ventilation roads be in one comprise cylinder-bore axis and both with the first ventilation road also with the both sides on the concentric tangent plane of air outlet flue.When internal combustion engine operation, owing to piston moves downward the air compression that makes in the crankcase, enter cylinder, and the mixed gas of in advance bringing into is taken away from the first ventilation road via all ventilation roads.Air from other ventilation track overflow makes mixing air separate from relief opening simultaneously, so reduced the direct loss of supplying gas through air outlet flue.Thus when can reducing the fuel great waves that disappear, and because and air mixing, when improving combustion efficiency.Its deficiency is the structure more complicated, and the expense height is because two suction ports will be adorned valve and two controlled throttle valve gears.
The Germany prospectus discloses a kind of two stroke IC engine No. 2650834; in this internal-combustion engine, at air outlet flue with constitute between the suction port in ventilation road of gas-storing chamber and introduce rich mixture, the suction port in other ventilation road is set; bring weak mixture into, weak mixture is as shielding gas.In fuel stroke, piston moves downward, and rare fuel and Air mixing gas is by precompression, and is brought into the ventilation road and has been full of dense fuel and the gas-storing chamber of air Mixture.In case piston exposes suction port, rare fuel and air Mixture promptly flow out from the ventilation road, and mixed gas flows out from gas-storing chamber, flows into cylinder in the lump.Weak mixture washes away the residual gas that comes out in the cylinder, and the rich mixture that comes out in the gas-storing chamber mixes a kind of fuel of lighting of formation and air Mixture with weak mixture simultaneously.By the suction port in ventilation road is set between the import of gas-storing chamber and air outlet flue, just can stop rich mixture to enter air outlet flue, like this burning is not just caused damage.The deficiency of alkene machine equally also is complex structure in this, expense height, the additional auxiliary vaporizer of needs or the air inlet that at least one separates separately.
The austrian patent specification discloses a kind of intersection scavenging type two-stroke internal-combustion engine for No. 138.547, and this internal-combustion engine makes cylinder with waste gas and live gas ventilation in order to prevent that live gas is discharged by air outlet flue when taking a breath successively.This is reached by a cell, is communicated with cylinder chamber when this chamber expansion stroke before piston reaches the dead point finishes, and enters this cell to cause a part of combustion gas.Afterwards, exhaust open, the combustion gas that are stored in this chamber are taken a breath cylinder in advance, and in view of the above, live gas enters cylinder by suction port the most at last.The edge is lower than the top edge in all ventilation roads on the exhaust.Like this, the gas exchange loss that occurs in the ventilation incipient stage is worked as and can be reduced.Yet the mixed gas that this internal-combustion engine still has deficiency promptly to take these measures not control and occurs in the further continuous process of ventilation loses.The complex structure of this internal-combustion engine, expense also are higher than comparable general two stroke IC engine.
British patent specification the 1345707th discloses a kind of two stroke IC engine.This internal-combustion engine, be provided with an auxiliary flue, one auxiliary waste gas road junction be arranged on the cylinder wall of contiguous main vent and to dispose in expansion stroke, enter auxiliary flue exhaust gas pressure cause on auxiliary waste gas road junction, producing with predetermined speed and be higher than the overbottom pressure in the cylinder when the incipient stage of compression stroke, relief opening was still opened, make that to enter into the fresh mixture air-flow of relief opening from cylinder reverse.Yet this internal-combustion engine is by solving incoming mixture loss problem from the adverse current change or the disturbance scavenge flow that are positioned at the accessory channel on the relief opening.Result of study shows that such accessory channel can cause the interference of scavenge flow, thereby can not obtain desirable scavenge effect.
Task of the present invention provides a kind of two stroke IC engine, adopts device simple in structure, that cost is low, guarantees that ventilation effect is good, compares with general two stroke IC engine, can reduce the discharge amount of harmful substance in the running and improve Economy.
Task of the present invention is finished like this: when piston moves downward, after relief opening exposes, when the pressure in the cylinder still is higher than pressure in the crankcase, the suction port at least two first ventilation roads of adjacent row air flue both sides is unlocked simultaneously, make waste gas enter in these ventilation roads and force do not enter in the crankcase and still the incoming mixture in these ventilation roads retreat, and the suction port at least two second ventilation roads will be exposed, this suction port also is arranged on the both sides of air outlet flue, and it is more a little than the first ventilation road far apart, thereby make cylinder ventilation and inflation with the incoming mixture that sucks, because pressure reverses, at first from the first ventilation road, withdraw from again with the waste gas that advances into, form an obstacle, stop the incoming mixture that sucks in the relief opening overflow, the incoming mixture of suction is also flowed out by the first ventilation road.Like this, can realize waste gas one incoming mixture one layering air exchanging method, and not need additional auxiliary vaporizer or fresh air import, not need the additional suction port control unit that must mutually adjust in all cases.Method of the present invention mainly is that structure is simpler, and expense is low, has good ventilation and air inlet again, and the waste gas barrier has stoped air inlet directly by the loss of relief opening in addition, has guaranteed that the internal-combustion engine discharge amount of pollution turns round less and economically.
When opening approximately simultaneously or closing the border with the second ventilation road, effective especially when communicating with cylinder wall on the relief opening of facing at least one the 3rd ventilation road.Good especially ventilation effect can be obtained thus, especially, specifically, favourable gas dynamics effect can be produced by freely selecting air inlet angle when using two or three passages.
A kind of two stroke IC engine of the present invention, wherein adjacent row gas port and the being arranged on suction port top edge at least two first ventilation roads that comprises the both sides on the plane that cylinder-bore axis and center or air outlet flue by air outlet flue partly hit exactly is higher than the top edge of at least two the second ventilation road imports that the contiguous first ventilation road is provided with, thereby make waste gas enter the first ventilation road, and these first ventilation sizes of having of roads and (or) control gear, be enough to stop waste gas to enter crankcase.This has just established a kind of possibility simple in structure; the moment that is opened in the first ventilation road; though relief opening is also just opened, pressure still is higher than the pressure of crankcase in the cylinder, therefore is used as useless these first ventilation roads that enters of shielding gas.
A kind of best remodeling of two stroke IC engine of the present invention is: in the scope in the first ventilation road of adjacent row air flue, the control edge of piston is lower than the control edge of the scope inner carrier in the second ventilation road that is close to the first ventilation road, make waste gas enter the first ventilation road, and these first ventilation sizes of having of roads and (or) control gear, be enough to stop waste gas to enter crankcase.This just provides another kind of possibility, promptly with the waste gas filling first ventilation road.In these two kinds of forms, must prevent that all waste gas from entering crankcase, or the size by stipulating, the cross section of the length in the first ventilation road and the size of cylinder match; Perhaps in these passages, adopt control gear.
A kind of pattern of the present invention provides a kind of control gear that stops waste gas to enter crankcase, and it is made of the bent axle clamping plate, provide for this reason one with each first the ventilation road enter the gap that the import in the crankcase matches.It is too fast or flow to the crankcase direction too widely that this returns the waste gas of first ventilation in the road with prevention, thereby guaranteed before ventilation with waste gas these passages of filling fully.
Below with reference to accompanying drawing the present invention is done narration at length.
Description of drawings:
Fig. 1 is the part schematic representation of two stroke IC engine of the present invention, represents the state 1 of procedure of the present invention, partly intercepts along the I among Fig. 3-I line;
Fig. 2 is the cross section along II among Fig. 1-II line;
Fig. 3 is the cross section along III among Fig. 1-III line;
Fig. 4,5,6 is the cross section that internal-combustion engine itself intercepts by above-mentioned identical position, expression the inventive method status of processes 2;
Fig. 7,8,9 is the inventive method status of processes 3;
Figure 10,11,12 is the inventive method status of processes 4;
Figure 13,14 is the schematic representation of another kind of two stroke IC engine state 1, and the cross section is corresponding to Fig. 1 and Fig. 2;
Figure 15,16,17 is the state 2,3,4 corresponding to Fig. 5,8,11 procedure;
Figure 18 is crank shaft angle figure.
The same numeral of same section.
Two stroke IC engine shown in Fig. 1-12 has the cylinder 1 and the crankcase 3 that has a bent axle 4 that have a cylinder head 2.Cylinder 1 comprises piston 6, and piston 6 is connected with bent axle 4 by connecting rod 5.An aperture 7 of settling spark plug (among the figure draw in the end) is arranged in cylinder head 2.Cylinder 1 is connected with crankcase 3 by one group of first ventilation road 8, one group of second ventilation road 9 and one group of the 3rd ventilation road 10; Wherein the first ventilation road group 8 has suction port 12, the second ventilation road groups 9 to have suction port 13, the three ventilation road groups 10 that suction port 14 is arranged in cylinder 1.The first and second ventilation road groups 8 and 9 comprise two passages on the both sides of plane E, and plane E comprises cylinder axis 15 and the centre by air outlet flue 16.Two groups also can have more passage on the both sides of said plane E.First the ventilation road 8 scope 11 ' in, the control edge 11 of piston 6 is a decline trend.The 3rd ventilation road group 10 also has two passages bringing gas port 14 into, and this passage is radially relative with the air outlet flue 16 that has relief opening 17.Yet this group also can have than two path 10s only Duos one or many several passages.The first ventilation road 8 has a common import 18 of leading to crankcase 3.The import that the second ventilation road 9 feeds crankcase 3 is represented with 19.The coupling of the volume by ventilation volume in road 8 and cylinder 1 when internal combustion engine, can stop the waste gas that comes out from cylinder 1 to enter crankcase 3.It 24 is connected with crankcase 3 by leading the way of check valve arranged incoming mixture shown in getting ready through vaporizer 23() introduce.
During internal combustion engine, be to take a breath in the two-stroke according to the process shown in Fig. 1-12.At status of processes 1(Fig. 1-3), piston 6 moves downward, perhaps its control edge 11 scope 11 ' in be decline, at this moment suction port 12,13,14 and relief opening 17 still expose at the end, by waste gas filling cylinder 1.Bent axle 4 connects the direction shown in the arrow 28 and rotates.Simultaneously, the incoming mixture that is comprised in the crankcase 3 is compressed by piston 6, and piston has covered ventilation road 8,9,10.At this moment has only waste gas in the cylinder 1.
At status of processes 2(Fig. 4-6), piston 6 continues to move downward, now not only the relief opening 17 of air outlet flue 16 exposes, and the suction port 12 in the first ventilation road 8 by drop to scope 11 ' the control edge of piston 6 also expose.These passages are opened early than the second ventilation road 9, also promptly still are higher than at cylinder pressure and open when ventilation in crankcase 3 and the passage 8 is pressed, and make waste gas flow back to the top 21 of this passage, and incoming mixture is pushed bottom 22.Long enough is wanted in ventilation road 8, enters into crankcase 3 so that prevent waste gas reliably.Fig. 4 and Fig. 5 clearly illustrate that waste gas flowing along arrow 29 and 30 respectively.Fig. 6 also clearly illustrates that the top 21 in the ventilation road 8 of filling waste gas.
At status of processes 3(Fig. 7-9), piston 6 is in its lower dead centre, and ventilation road 9 is opened, and the ventilation road 10 that is equipped with in order to improve ventilation effect is opened, and given cylinder 1 ventilation with incoming mixture.Simultaneously; because to reduce in the passage 8 be the arrow 31 among Fig. 7 and the reversal of direction of flow of the arrow 32 among Fig. 8 to pressure in the cylinder 1; waste gas in the exhaust casing plays barrier action (shielding gas) for the incoming mixture that flows out from passage 9 and 10 at this moment; like this, lose with regard to having stoped incoming mixture directly to enter air outlet flue 16.Only when the ventilation state nearly finished, incoming mixture just came out from ventilation road 8.
When ventilation finished process status 4(Figure 10-12), in ideal conditions, cylinder 1 filling incoming mixture was without any losing through air outlet flue 16.Being filled in incoming mixture in the cylinder 1 fully will move upward by piston 6 and be compressed.
The top edge 13 of the top edge 12 of the suction port 12 of passage 8 ' the be higher than suction port 13 of passage 9 ', and the control edge 11 of piston 6 also do not drop to scope 11 ', perhaps top edge 12 ', 13 ' different heights and decline scope 11 ' cooperate, all can reach the control time different with the second ventilation road group 9 to the first ventilation road group 8.
At a kind of remodeling that shown in Figure 13-17 is above-mentioned two stroke IC engine, embodiment's difference of it and front is that a kind of control gear 20 are used in the first ventilation road 8.This control gear 20 is by means of the separation import 33 that is entered crankcase 3 by passage 8 and a gap 27 that cooperates with these imports on each bent axle clamping plate 26 circumference, prevents the waste gas crankcase 3 that bleeds.
At process status 1(Figure 13 and 14), all suction ports 12,13,14 and the import 33 on relief opening 17 and the crankcase 3 are all closed, cylinder 1 filling waste gas.
Figure 15-17 is depicted as process status 3 and 4, forms by arrow 28 directions rotations by bent axle 4, and this Fig. 5,8 and 11 with previous embodiment is identical aspect piston position and gas exchange.
The import 33 that Figure 15 shows that ventilation road 8 on the crankcase 3 is still covered by bent axle clamping plate 26, and is at this moment as shown in arrow 30, and waste gas comes out to enter ventilation road 8 from cylinder 1, but can not enter crankcase 3.
When bent axle 4 continued to rotate to the lower dead centre (Figure 16) of piston 6 by arrow 28, ventilation road 9 exposed, thereby makes incoming mixture enter cylinder 1.By space 27 import 33 is exposed because pressure reverses, then the waste gas as shielding gas enters cylinder 1 and stops incoming mixture to flow into air outlet flue 16 via ventilation road 8 by arrow 32 direction.When gas exchange process nearly finished, incoming mixture also entered cylinder 1 by ventilation road 8.
Process status 4(Figure 17) shows ventilation internal-combustion engine afterwards.As shown in the figure, control gear 20 has successfully stoped the waste gas forward position to enter crankcase 3, the easier this point of accomplishing of size in fixing ventilation road 8.
Figure 18 is the summary view of control graph that is used for single passage 8,9,10,16 and is used for two kinds of implementation types of control gear 20.Wherein upper and lower dead point is represented with OT and UT respectively.Angular range S when control gear 20 is opened
-SS represents.Being described as follows of other symbol among the crank angle figure:
α
0-air outlet flue begins opening angle, represents with a ° KWn.OT
The beginning opening angle of the α 1-first ventilation road group 8 is represented with a ° KWn.OT
α 4-control gear 20 beginning opening angles are represented with a ° KWn.OT
α 5-control gear 20 is opened angle at the end, represents with a ° KWn.OT
D
0-air outlet flue the opening time, represent with a ° KW
D2, represents with a ° KW 3-second and the 3rd ventilation road 9,10 opening times of group
Ventilation road and air outlet flue are controlled by following time sequencing:
Air outlet flue begins opening angle α
0, then be ventilation road 8 beginning opening angle α 1, be ventilation road 9 and 10 beginning opening angle α 2,3 afterwards, its opening time D2,3 is the shortest, and first is closed.Thereafter, passage 8 is closed, its opening time D
1Medium, what close at last is air outlet flue, and its opening time is D
0
The beginning opening angle α 4 of control gear 20 is at the beginning opening angle α of air outlet flue 16
0And between the lower dead centre of piston (UT), the angle [alpha] 5 that finishes to open is greatly between piston lower dead centre and exc..
Claims (3)
1, a kind of reverseflow type two stroke IC engine, it is provided with the ventilation road, its suction port adjacent row gas port, the top edge (12 ') that it is characterized in that at least two adjacent row air flues (16) and be arranged on the suction port (12) that is comprising the first ventilation road (8) on the both sides of passing through air outlet flue (16) or the plane (E) by the cylinder-bore axis (15) in the middle of the air outlet flue part is higher than the top edge (13 ') of the suction port (13) at least two the second ventilation roads (9) that the contiguous first ventilation road (8) is provided with, the length in the first ventilation road and the size of cross section and cylinder match, and make the control gear (20) that adopts in the passage, be enough to stop waste gas to enter crankcase (3).
2, two stroke IC engine according to claim 1, it is characterized in that adjacent row air flue (16) first the ventilation road (8) scope (11 ') in, the control edge (11) of piston (6) is lower than the scope inner carrier control edge in the second ventilation road (9) in the contiguous first ventilation road, and the length in the first ventilation road (8) and the size of cross section and cylinder match, and make the control gear (20) that adopts in the passage be enough to stop waste gas to enter crankcase (3).
3, two stroke IC engine according to claim 1 and 2, it is characterized in that said internal-combustion engine has the control gear (20) that prevention waste gas enters crankcase (3), constitute by bent axle clamping plate (26), provide one to enter the gap (27) that the import (33) in the crankcase (3) matches for this reason with each first road (8) of taking a breath.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA1419/85 | 1985-05-10 | ||
| AT141985A AT399913B (en) | 1985-05-10 | 1985-05-10 | TWO-STROKE INTERNAL COMBUSTION ENGINE WITH REVOLUTION |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86103240A CN86103240A (en) | 1986-11-05 |
| CN1007443B true CN1007443B (en) | 1990-04-04 |
Family
ID=3513489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86103240 Expired CN1007443B (en) | 1985-05-10 | 1986-05-09 | Method by load change in two-stroke verbernnungskraftmaschine and verbernnungskraftmaschine by exercise of this method |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0202216B1 (en) |
| JP (1) | JPS6217315A (en) |
| CN (1) | CN1007443B (en) |
| AT (1) | AT399913B (en) |
| DE (1) | DE3665349D1 (en) |
| IN (1) | IN166656B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT8912001A0 (en) * | 1989-01-24 | 1989-01-24 | Renzo Dellarosa | PRESSURE COMPENSATION SYSTEM BETWEEN PUMP CASE AND EXHAUST AIR FOR TWO-STROKE CYCLE ENDothermic Engines |
| FR2693507B1 (en) * | 1992-07-09 | 1994-08-26 | Aura | Method and device for feeding a two-stroke internal combustion engine cylinder. |
| US6729275B2 (en) | 1999-02-05 | 2004-05-04 | Avl List Gmbh | Two-stroke internal combustion engine with crankcase scavenging |
| US6539900B2 (en) | 1999-02-05 | 2003-04-01 | Avl List Gmbh | Two-stroke internal combustion engine with crankcase scavenging |
| DE10319216B4 (en) * | 2003-04-29 | 2015-09-24 | Andreas Stihl Ag & Co. Kg | Two-stroke engine |
| CN103790690B (en) * | 2014-02-21 | 2017-03-08 | 浙江天泰机械有限公司 | A kind of gasoline engine |
| CN107366573A (en) * | 2017-07-04 | 2017-11-21 | 贵州宝文电机科技有限公司 | Revolving cylinder engine |
| CN107524514B (en) * | 2017-07-25 | 2019-07-23 | 北京航空航天大学 | The high power to weight ratio heavy oil piston engine air inlet buffer of two strokes of one kind and its design method |
| CN112696265A (en) * | 2020-12-24 | 2021-04-23 | 南通理工学院 | Two-stroke internal combustion engine capable of reducing environmental pollution |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT138547B (en) * | 1933-06-02 | 1934-08-10 | Karl Letzner | Two-stroke internal combustion engine. |
| FR759044A (en) * | 1933-07-31 | 1934-01-27 | Two-stroke internal combustion engine | |
| GB464750A (en) * | 1935-10-14 | 1937-04-23 | Messerschmitt Boelkow Blohm | Improvements in and relating to the scavenging and charging of the cylinders of two-stroke internal combustion engines |
| FR1022403A (en) * | 1949-07-06 | 1953-03-04 | Miller & Company Ltd H | Improvements to internal combustion engines |
| DE849624C (en) * | 1949-11-01 | 1952-09-18 | Gertrud Schnuerle | Two-stroke internal combustion engine with carburetor and spark plug |
| DE1008046B (en) * | 1953-01-10 | 1957-05-09 | Kloeckner Humboldt Deutz Ag | Two-stroke internal combustion engine working with a small time cross-section for the discharge of the exhaust gases |
| DE1010315B (en) * | 1955-05-28 | 1957-06-13 | Otto Elwert Dipl Ing | Piston-controlled two-stroke internal combustion engine |
| GB1345707A (en) * | 1970-05-21 | 1974-02-06 | Glen J R | Two-stroke internal combustion engines |
| DE2151941A1 (en) * | 1971-10-19 | 1973-04-26 | Blume Geb Schroedet Helga | MIXED FLUSH WITH FLUSH TEMPLATE |
| US3815558A (en) * | 1972-08-07 | 1974-06-11 | W Tenney | Scavenge porting system |
| DE2650834A1 (en) * | 1975-12-22 | 1977-06-30 | Thaelmann Fahrzeug Jagdwaffen | Two;:stroke engine with stratified charge - has storage chamber transfer ports fed by separate rich mixture carburetter |
| DE2919172A1 (en) * | 1977-08-25 | 1979-11-15 | Univ Belfast | Small two stroke IC engine - has additional inlet in transfer passage between crankcase and cylinder |
| ES480476A1 (en) * | 1978-05-12 | 1980-01-16 | Univ Belfast | Stratified-charge two-stroke internal combustion engines |
| GB2083550B (en) * | 1980-08-29 | 1984-05-16 | Outboard Marine Corp | Scavening two-stroke internal combustion engines |
| GB2115485B (en) * | 1982-02-17 | 1987-01-07 | Nat Res Dev | Stratified charge engines |
| JPS59134323A (en) * | 1983-01-19 | 1984-08-02 | Nippon Clean Engine Res | Time difference collision stratified scavenging type 2-cycle engine |
| JPS6040727A (en) * | 1983-08-13 | 1985-03-04 | Nippon Clean Engine Res | Stratified scavenging two-cycle internal-combustion engine |
-
1985
- 1985-05-10 AT AT141985A patent/AT399913B/en not_active IP Right Cessation
-
1986
- 1986-04-28 EP EP19860890118 patent/EP0202216B1/en not_active Expired
- 1986-04-28 DE DE8686890118T patent/DE3665349D1/en not_active Expired
- 1986-04-30 IN IN390/DEL/86A patent/IN166656B/en unknown
- 1986-05-09 CN CN 86103240 patent/CN1007443B/en not_active Expired
- 1986-05-09 JP JP10753586A patent/JPS6217315A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| ATA141985A (en) | 1994-12-15 |
| EP0202216A3 (en) | 1987-03-04 |
| DE3665349D1 (en) | 1989-10-05 |
| CN86103240A (en) | 1986-11-05 |
| IN166656B (en) | 1990-06-30 |
| EP0202216A2 (en) | 1986-11-20 |
| EP0202216B1 (en) | 1989-08-30 |
| JPH0246772B2 (en) | 1990-10-17 |
| AT399913B (en) | 1995-08-25 |
| JPS6217315A (en) | 1987-01-26 |
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