CN1096547C - Mixing fuel gas feeding path structure of two stroke circulation engine - Google Patents
Mixing fuel gas feeding path structure of two stroke circulation engine Download PDFInfo
- Publication number
- CN1096547C CN1096547C CN98105453A CN98105453A CN1096547C CN 1096547 C CN1096547 C CN 1096547C CN 98105453 A CN98105453 A CN 98105453A CN 98105453 A CN98105453 A CN 98105453A CN 1096547 C CN1096547 C CN 1096547C
- Authority
- CN
- China
- Prior art keywords
- aforementioned
- mixed gas
- engine
- primary path
- cycle
- 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 - Fee Related
Links
Images
Landscapes
- Supercharger (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
Abstract
To supply mixture generated by a carburetor into a combustion chamber through a control valve in a main passage, and supply mixture of a stable air-fuel ratio by not arranging a compressor on a main passage, but by arranging the compressor on a tip end of a branch passage. A control valve 12 for closing a main passage 19 is arranged in the main passage 19 for communicating a carburetor 16 and a combustion chamber 11 with each other, and a check valve 14 is arranged between the control valve 12 and the carburetor 16. A branch passage 18 is formed to open between the control valve 12 and the check valve 14, a tip end of the branch passage 18 is connected to a compressor 20 of a reciprocating motion type, and also the length of the main passage 19 is formed shorter than that of the branch passage 18.
Description
The present invention relates to the improvement of the mixed gas supplier of two-cycle IC engine.
The mixed gas supplier of two-cycle IC engine for example discloses in " firing unit of two-stroke-cycle engine " of Japanese Patent Publication 50-25083 communique.
The purpose of above-mentioned technology is the ignitability when improving the two-stroke-cycle engine low load operation, prevents irregular outburst, makes low load operation stable, and simultaneously, available weak mixture running makes exhaust gas purification.Shown in this communique accompanying drawing, have vaporizer 13, the secondary sucking pipe 21 that is connected with the secondary aspiration column 24 of this vaporizer 13, the aspirator 10 that is connected with this pair sucking pipe 21, the positive displacement air delivery pump P that is connected with this aspirator 10, be located at this air delivery pump P downstream side to the Aspirating valves 14 between the firing chamber 4, subsidiary combustion chamber 5 and through hole 6 successively.
The mixing fuel gas feeding path of above-mentioned technology, be " front of the secondary sucking pipe 21-of the secondary aspiration column 24-air delivery pump P-Aspirating valves 14 of vaporizer 13 ", because distance, even vaporizer 13 can generate the mixed gas of atomizing well, when passing through in the above-mentioned mixed gas path owing to mixed gas, fuel deposition is in path or on the wall in the pump P, fuel stays is in path, pump P, so, can not keep stable air fuel ratio, thereby can not get required engine performance.
Therefore, the purpose of this invention is to provide a kind of mixed gas supplier of two-cycle IC engine, this structure can prevent that fuel deposition from mixing fuel gas feeding path or compressor inwall, keeping stable air fuel ratio.
To achieve these goals, first aspect present invention is a kind of mixed gas supplier of two-cycle IC engine, in the described two-cycle IC engine, mixed gas is supplied to the firing chamber from the primary path that vaporizer is communicated with the firing chamber, ventilation is supplied to firing chamber from the ventilation of other setting with path with air, it is characterized in that, described device is by periodically interdicting the previous combustion chamber that is provided with in the aforementioned primary path and the control valve of aforementioned primary path, the check valve that the vaporizer that stops mixed gas to be provided with in aforementioned primary path flows, the branch branch road of the aforementioned path that between aforementioned control valve and aforementioned check valve, is provided with, form with the reciprocal compressor that is connected with the aforementioned branches road, the length of aforementioned primary path is shorter than the length on aforementioned branches road.
Compressor is not located in the primary path, and be provided in a side of the front end on branch road, so fuel can successfully not supplied with firing chamber by control valve by the mixed gas that vaporizer generates attached on the compressor inwall in primary path, but stable mixed gas of air supply fuel ratio.
In the mixed gas supplier of the two-cycle IC engine that second aspect present invention provides, divide branch road to make and be inclined upwardly towards compressor side.
When fuel deposition was on minute branch road inwall, fuel did not flow to compressor side, and flows to primary path, so, can use fuel effectively.
Fig. 1 is the sectional view of two-cycle IC engine of the present invention.
Fig. 2 is the sectional view that passes through crankshaft center and each cylinder axis of two-cycle IC engine of the present invention.
Fig. 3 is the sectional view (the 1st action diagram) of explanation engine action of the present invention.
Fig. 4 is the sectional view (the 2nd action diagram) of explanation engine action of the present invention.
Fig. 5 is the sectional view (the 3rd action diagram) of explanation engine action of the present invention.
Fig. 6 is the sectional view (the 4th action diagram) of explanation engine action of the present invention.
Fig. 7 is the sectional view (the 5th action diagram) of explanation engine action of the present invention.
Below, with reference to the description of drawings embodiments of the invention.Accompanying drawing is seen according to the label direction.
Fig. 1 is the sectional view of two-cycle IC engine of the present invention.Two-cycle IC engine 1 (hereinafter referred to as motor 1) by crankcase 2, can be rotated to support on bent axle 3 on this crankcase 2, be rotatably installed in connecting rod 5 on the crank pin 4 of bent axle 3, by wrist pin 6 be rotatably installed in these connecting rod 5 front ends piston 7, have the cylinder 8a that slides for piston 7 and the cylinder head 9 that is installed in the cylinder block 8 on the crankcase 2 and is installed in these cylinder block 8 front ends constitutes.In crankcase 2, as 4 stroke IC engines, storing lubricant oil, be used for lubricated bent axle 3 around.
Motor 1 by as the solenoid valve 12 of control valve, tee union member 13, as check valve leaf valve 14, bend pipe 15, vaporizer 16, constitute as branched pipe 18, the press part 20 of minute branch road.Solenoid valve 12 is installed on the cylinder head 9, supplies with mixed gas to firing chamber 11 intermittently.One side of tee union member 13 is connected with the upstream of this solenoid valve 12.Leaf valve 14 is connected with the opposing party of this joint member 13.Bend pipe 15 is connected with the upstream of pilot valve 14.Vaporizer 16 is connected with the front end of this bend pipe 15.Branched pipe 18 is connected with above-mentioned joint member 13 by connecting tube 17A.Press part 20 is that compressor passes through connecting tube 17B and is connected with this branched pipe 18.The upstream of vaporizer 16 is connected with the air-strainer that figure does not show.Joint member 13 and bend pipe 15 constitute primary path 19.
The 41st, the air supply pipe that is connected with the air-strainer of scheming not show.The 42nd, leaf valve.43 are mounted in the sucking pipe on the crankcase 2.The 44th, scavenging port.The 45th, water jacket.The 46th, relief opening.The 47th, outlet pipe.The 48th, spark plug.51, the 52nd, piston ring.B1, B2 ... (... the expression plural number, down together) be bolt.
In addition, press part 20 is made of the 1st cylinder block the 24, the 2nd cylinder block 25 and cylinder head 26.The 1st cylinder block 24 is installed on the crankcase 2 and has the 1st cylinder 24a of the 23a of the big piston portion slip that supplies piston 23.The 2nd cylinder block 25 is installed on the 1st cylinder block 24 superimposedly and has the 2nd cylinder 25a of the 23b of the small piston portion slip that supplies piston 23.Cylinder head 26 is installed in the top of the 2nd cylinder block 25.
27 is Room the 1st, and 28 is the 1st air flues, and 31 is Room the 2nd, and 32 is the 2nd air flues, the 33rd, and water jacket, the 34,35, the 36th, piston ring, B3, B3 are bolts.
Fig. 2 is the sectional view that passes through crankshaft center and each cylinder axis of two-cycle IC engine of the present invention.Motor 1 has alternator 54 at an end of bent axle 3, is installed in crankangle detection dish 55, crank angle sensor 56,57 and the water pump 61 in these alternator 54 outsides with bolt B 4.Crank angle sensor 56,57 respectively with the protuberance 55a, the 55b that are formed on this crankangle detection dish 55 ..., 55c ... correspondence is used for detecting (crank angle sensor corresponding with protuberance 55a omit) such as crankangles.Water pump 61 and is connected with bent axle 3 by resilient member 58 on the axis elongation line of bent axle 3.
4a, 4b are the oilholes of opening in crank pin 4, and 62a, 62b are bearings, the 63, the 64th, and oil sealing, the 65,65,66, the 66th, needle bearing, the 67, the 68th, scavenging port.
Below, the effect of above-mentioned motor 1 is described with reference to Fig. 3 to Fig. 7.
Fig. 3 is the sectional view (the 1st action diagram) of explanation engine action of the present invention.
Fig. 4 is the sectional view (the 2nd action diagram) of explanation engine action of the present invention.
Fig. 5 is the sectional view (the 3rd action diagram) that explanation motor of the present invention is done week.
Fig. 6 is the sectional view (the 4th action diagram) of explanation engine action of the present invention.
Fig. 7 is the sectional view (the 5th action diagram) of explanation engine action of the present invention.
Among Fig. 3, mixed gas in 11 internal combustion of firing chamber or the burning done state, piston 7 descends to the lower dead centre side slightly from upper dead center.
At this moment, the piston 23 of press part 20 descends from upper dead center, owing to become negative pressure in Room 31 the 2nd and the 2nd cylinder 25a, so air becomes mixed gas by vaporizer 16, by bend pipe 15, opens leaf valve 14, arrives in the branched pipe 18 in joint member 13.
In addition, when importing from above-mentioned vaporizer 16 with air, owing to also become negative pressure in Room 27 the 1st and the 1st cylinder 24a, air passes through air supply pipe 41 from the air-strainer that figure does not show, open leaf valve 42, arrive in sucking pipe 43 and the 1st air flue 28.
Among Fig. 4, the gas expansion after burning and the state of exhaust soon, piston 7 descends from Fig. 3 state, and the upper end of relief opening 46 is blocked in the upper end of piston 7.
At this moment, the piston 23 of press part 20 changes rising almost at lower dead point position into from decline.
Like this, in Room 31 the 2nd and the 2nd cylinder 25a, be malleation from negative pressure variation.
Therefore, among Fig. 3, arrive the mixed gas in branched pipe 18 ways, in Fig. 4, change direction, from branched pipe 18 to joint member 13 side shiftings.
At this moment, leaf valve 14 is cut out by the pressure in the joint member 13.
When the mixed gas in branched pipe 18 is changed direction, be malleation also in Room 27 the 1st and the 1st cylinder 24a, so the air in the 1st air flue 28 returns in the sucking pipe 43 from negative pressure variation.
At this moment, leaf valve 42 is cut out by the pressure in the sucking pipe 43.
Among Fig. 5, the gas after the burning is discharged, and in the scavenging stroke of new gas scavenging in gas 8a, piston 7 is positioned at the position of rising slightly from lower dead centre, and scavenging port 44, relief opening 46 are all being opened.
At this moment, the piston 23 of press part 20 carries out on a large scale shifting to the upper dead center side with respect to position shown in Figure 4, so, in the 2nd cylinder 25a, being compressed in the Room 31 the 2nd, mixed gas returns near the joint member 13, and becomes high pressure.
Air in the 1st air flue 28 is by sucking pipe 43, enter in the cylinder 8a by scavenging port 44.
Among Fig. 6, the zero hour of the compression stroke after piston 7 has just sealed relief opening 46, the piston 23 of press part 20 is almost at upper dead center position, and Room 31 the 2nd is in most compressed state, and mixed gas is trapped near the joint member 13, and becomes maximal pressure.
At this state,, make the 12 action scheduled times of solenoid valve to solenoid valve 12 energisings.Like this, near the high pressure mixing gas blowout the joint member 13 is mapped in the cylinder 8a.
Among Fig. 7, at the terminal point of compression stroke, piston 7 is in the position of before top dead center, and the mixed gas in the firing chamber 11 is in most compressed state.
At this state,, make spark plug 48 igniting to spark plug 48 energisings.
Become the mixed gas instantaneous burst of high pressure like this.
The piston 23 of press part 20 is in the state that descends slightly from upper dead center, and with similarly shown in Figure 3, the inlet importing air from vaporizer 16 imports mixed gas in the joint member 13 by bend pipe 15, leaf valve 14.
In addition owing to become negative pressure in Room 27 the 1st and the 1st cylinder 24a, so, air by air supply pipe 41, open leaf valve 42, arrive in sucking pipe 43 and the 1st air flue 28.Then, carry out repeatedly same from Fig. 4.
Like this, in the primary path 19 that is communicated with vaporizer 16 and firing chamber 11, be provided with the solenoid valve 12 of inaccessible this primary path 19, simultaneously between this solenoid valve 12 and vaporizer 16, be provided with leaf valve 14, the branched pipe 18 of formation opening between this solenoid valve 12 and leaf valve 14, the front end of this branched pipe 18 is connected with press part 20, and set primary path 19 to such an extent that be shorter than branched pipe 18, press part 20 is not provided in a side of on the primary path 19, and be provided in a side of the front end of branched pipe 18, so fuel can not adhere to press part 20 inwalls, in primary path 19, successfully supply with firing chamber 11 by the mixed gas that vaporizer 16 generates by solenoid valve 12, but the stable mixed gas of air supply fuel ratio.
In addition, branched pipe 18 becomes towards press part 20 side direction and tilts, so when fuel deposition was on branched pipe 18 inwalls, fuel did not flow to press part 20 sides, and flows to primary path 19, so, can use fuel effectively.
Control valve among the present invention except the electric solenoid valve shown in the embodiment, also can adopt the control valve of pneumatic type, hydraulic type.
The present invention of above-mentioned structure has following effect.
The gaseous mixture feedway of the two-cycle IC engine of claim 1 record forms court The branch branch road of opening between control valve and the non-return valve is with front end and the reciprocating type compression of this minute branch road Machine connects, and, set primary path to such an extent that be shorter than the branch branch road, so compressor is not located at the master In the path, and be provided in a side of the front end on branch road, like this, fuel can not be attached to the compressor inwall On, in primary path, successfully supply with combustion chamber by control valve by the gaseous mixture that gasifier generates, But the gaseous mixture that the air supply fuel ratio is stable.
The gaseous mixture feedway of the two-cycle IC engine of claim 2 record is with branch Pipe is made towards compressor side and is inclined upwardly, so, fuel deposition when minute branch road inwall, fuel Do not flow to compressor side, and flow to primary path, so, fuel can effectively be used.
Claims (2)
1. the mixed gas supplier of a two-cycle IC engine, in the described two-cycle IC engine, mixed gas is supplied to the firing chamber from the primary path that vaporizer is communicated with the firing chamber, ventilation is supplied to firing chamber from the ventilation of other setting with path with air, it is characterized in that, described device is by periodically interdicting the previous combustion chamber that is provided with in the aforementioned primary path and the control valve of aforementioned primary path, the check valve that the vaporizer that stops mixed gas to be provided with in aforementioned primary path flows, the branch branch road of the aforementioned path that between aforementioned control valve and aforementioned check valve, is provided with, form with the reciprocal compressor that is connected with the aforementioned branches road, the length of aforementioned primary path is shorter than the length on aforementioned branches road.
2. the mixed gas supplier of two-cycle IC engine as claimed in claim 1 is characterized in that, above-mentioned minute branch road becomes towards compressor side and be inclined upwardly.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13416797A JP3685907B2 (en) | 1997-05-23 | 1997-05-23 | Mixture supply passage structure for a two-cycle internal combustion engine |
| JP134167/97 | 1997-05-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1200434A CN1200434A (en) | 1998-12-02 |
| CN1096547C true CN1096547C (en) | 2002-12-18 |
Family
ID=15122024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98105453A Expired - Fee Related CN1096547C (en) | 1997-05-23 | 1998-03-12 | Mixing fuel gas feeding path structure of two stroke circulation engine |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3685907B2 (en) |
| CN (1) | CN1096547C (en) |
| IT (1) | ITTO980406A1 (en) |
| TW (1) | TW341621B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPQ489799A0 (en) * | 1999-12-24 | 2000-02-03 | Orbital Engine Company (Australia) Proprietary Limited | Improved fluid compressor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064916A (en) * | 1991-08-23 | 1992-09-30 | 郝成武 | Gas-filled two-stroke internal combustion engine |
| DE4236899A1 (en) * | 1992-10-31 | 1994-05-05 | Mtu Friedrichshafen Gmbh | Multi-cylinder two-stroke engine - has intake slots in cylinder liners, and discharge valves in cylinder heads |
-
1997
- 1997-05-23 JP JP13416797A patent/JP3685907B2/en not_active Expired - Fee Related
-
1998
- 1998-02-17 TW TW087102177A patent/TW341621B/en active
- 1998-03-12 CN CN98105453A patent/CN1096547C/en not_active Expired - Fee Related
- 1998-05-14 IT IT98TO000406A patent/ITTO980406A1/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064916A (en) * | 1991-08-23 | 1992-09-30 | 郝成武 | Gas-filled two-stroke internal combustion engine |
| DE4236899A1 (en) * | 1992-10-31 | 1994-05-05 | Mtu Friedrichshafen Gmbh | Multi-cylinder two-stroke engine - has intake slots in cylinder liners, and discharge valves in cylinder heads |
Also Published As
| Publication number | Publication date |
|---|---|
| TW341621B (en) | 1998-10-01 |
| JP3685907B2 (en) | 2005-08-24 |
| ITTO980406A1 (en) | 1999-11-14 |
| JPH10325331A (en) | 1998-12-08 |
| CN1200434A (en) | 1998-12-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2704692Y (en) | Stroke variable engine | |
| US6286469B1 (en) | Pneumatically controlled compressed air assisted fuel injection system | |
| CN1281860C (en) | Two-stroke internal combustion engine | |
| CN1217421A (en) | Air-conditioning two-stroke engine | |
| CA2071458A1 (en) | 4-cycle engine | |
| US4481910A (en) | Stratified-charge two-stroke cycle engine | |
| CN1045119C (en) | Internal combustion engine | |
| US5775274A (en) | Two-stroke engine with air-blast fuel mixture injection | |
| US4383503A (en) | Combustion chamber scavenging system | |
| CN1083929C (en) | Cylinder internal spark injection igniting type internal combustion engine | |
| CN1096547C (en) | Mixing fuel gas feeding path structure of two stroke circulation engine | |
| CN2339759Y (en) | Single-cylinder double-piston-opposite type engine | |
| CN1080371C (en) | Sparking two stroke IC engine with pre-compression in crank chamber | |
| CN1082132C (en) | Lubrication device for crank chamber supercharged engine | |
| CN2667175Y (en) | Two-stroke petrol engine with ventilating chamber | |
| CN109973212A (en) | With the two-stroke engine for improving performance | |
| CN100368663C (en) | Two-stroke structure/four-stroke internal combustion engine system | |
| WO1999014470A1 (en) | Improvements in and relating to internal combustion engines | |
| CN1083053C (en) | Fuel supply device for crankcase chamber supercharged engine | |
| GB2149006A (en) | Engine and compressor valve gear | |
| JPS60122264A (en) | Intake device for two-cylinder and two-cycle engine | |
| JPH05302521A (en) | Scavenging device of two-cycle engine | |
| JPH02233827A (en) | Four-stroke engine intake quantity increment method by crankcase compressive intake way | |
| CN2229527Y (en) | Two-stroke engine | |
| CN2334878Y (en) | Two-stroke engine with crankcase pressure isolator and straight line type waste gas exhausting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |