CN1217422A - Two-cylinder air-interchange two-stroke internal combustion engine - Google Patents
Two-cylinder air-interchange two-stroke internal combustion engine Download PDFInfo
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- CN1217422A CN1217422A CN 97120268 CN97120268A CN1217422A CN 1217422 A CN1217422 A CN 1217422A CN 97120268 CN97120268 CN 97120268 CN 97120268 A CN97120268 A CN 97120268A CN 1217422 A CN1217422 A CN 1217422A
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- cylinder
- internal combustion
- combustion engine
- interchange
- stroke internal
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Abstract
The present invention relates to a double-cylinder scavenging two-stroke internal combustion engine comprising cylinder bodies, pistons, connecting rods, crankshafts, combustion chambers which are placed in the tops of two parallel cylinder bodies and intercommunicated along tangential direction and air outlets which are respectively set on the upper cylinder walls above lower dead points of pistons in the interiors of two cylinder bodies. Said invention is characterized by that when one cylinder is being in intake stroke, another cylinder is being in exhaust stroke, and the combination of said two cylinders sharing one combustion chamber is used to implement scavenging operation crankshaft striking angle of psi, and the air inlets and outlets are distributed along the priphery of whole cylinder body.
Description
The present invention relates to technical field of internal combustion engines.
At present, the air-exchanging structure of two stroke IC engine generally has types such as cross-flow type, return flow type, direct current type.Cross-flow type, return flow type are that intake valve and exhaust valve are separately positioned on the sidewall of same cylinder body, have characteristic of simple structure, but when ventilation the cylinder body internal upper part present the dead angle, so it is not thorough to take a breath, inferior quality; Direct current type is that exhaust port is arranged on the cylinder body top, and then ventilation is more thorough, and quality is better, but its structure is complicated, needs to increase structures such as valve camshaft.
The purpose of this invention is to provide a kind of simple in structure, the ventilation quality better two-cylinder air-interchange two-stroke internal combustion engine.
For achieving the above object, the present invention takes following design proposal: this two-cylinder air-interchange two-stroke internal combustion engine, cylinder body, piston, connecting rod, bent axle are arranged, and be provided with the firing chamber that tangentially is interconnected at two cylinder body tops arranged side by side; Be respectively arranged with inlet hole and exhaust port on the casing wall above the piston lower dead center in two cylinder bodies.One cylinder air inlet, a cylinder exhaust cooperate realization ventilation, the shared firing chamber of twin-tub by two cylinder.The connecting rod of two cylinder body inner carriers is connected with same bent axle, and the crank angle φ that staggers certain.Gas entering opening and exhaust port are arranged with tangent direction, and distribute around whole cylinder body.
Working procedure is: the descending exhaust port of opening earlier of exhaust pition, carry out exhaust; Through certain crank angle φ, the air inlet piston is opened inlet hole and is carried out scavenging; Exhaust pition arrival begins the up exhaust port of closing after bottom dead center and carries out post-aeration; The air inlet piston is through arriving after bottom dead center behind certain crank angle φ, begin uply, closes inlet hole and finishes to take a breath; The work done of burning after two-piston compresses simultaneously promotes descent of piston, and beginning is ventilation next time.
Because the compression volume of cylinder body inner carrier is constant, the clearance of cylinder head when then reducing the piston arrives top dead center as far as possible is to strengthen the cross section journey of scavenging by the firing chamber.
That compared with the prior art the present invention has is simple in structure, the advantage of ventilation quality better.
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is a structural principle schematic representation of the present invention
Fig. 2 is that Figure 1A-A is to schematic representation
Fig. 3 is that Figure 1B is to schematic representation
Referring to Fig. 1, Fig. 2, shown in Figure 3, be provided with the firing chamber 2 that tangentially is interconnected at two cylinder body 1,3 tops arranged side by side, piston 9,5 in two cylinder bodies promptly is respectively arranged with inlet hole 10 and exhaust port 4 on the casing wall of the lower dead center of air inlet piston 9, exhaust pition 5 top; One cylinder air inlet, a cylinder exhaust cooperate realization ventilation, the shared firing chamber 2 of twin-tub by two cylinder.The connecting rod 8,6 of two cylinder body inner carriers 9,5 is connected with same bent axle 7, and the crank angle φ that staggers certain, form rotational flow gas when making the cylinder body scavenging, be beneficial to improve the ventilation quality, gas entering opening 10 is arranged with tangent direction with exhaust port 4, and distributes around whole cylinder body.
Because two cylinder bodies are provided with inlet hole 10 and exhaust port 4 respectively, and the cylinder body top when then taking a breath scavenging, is improved the ventilation quality again with the tangent direction connection.
Claims (1)
1, a kind of two-cylinder air-interchange two-stroke internal combustion engine has cylinder body, piston, connecting rod, bent axle, it is characterized in that: be provided with the firing chamber that tangentially is interconnected at two cylinder body tops arranged side by side; Be respectively arranged with inlet hole and exhaust port on the casing wall above the piston lower dead center in two cylinder bodies; One cylinder air inlet, a cylinder exhaust cooperate realization ventilation, the shared firing chamber of twin-tub by two cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97120268 CN1217422A (en) | 1997-11-11 | 1997-11-11 | Two-cylinder air-interchange two-stroke internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97120268 CN1217422A (en) | 1997-11-11 | 1997-11-11 | Two-cylinder air-interchange two-stroke internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1217422A true CN1217422A (en) | 1999-05-26 |
Family
ID=5175855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97120268 Pending CN1217422A (en) | 1997-11-11 | 1997-11-11 | Two-cylinder air-interchange two-stroke internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1217422A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1084431C (en) * | 1999-04-06 | 2002-05-08 | 金闽伟 | Two-stroke engine with aerated movable combustion chamber |
| CN100334336C (en) * | 2004-06-17 | 2007-08-29 | 马登科 | Double-cylinder circulating internal combustion engine and its method for mainly realizing thermal insulation and homogeneous lean burn |
| CN102996236A (en) * | 2011-09-19 | 2013-03-27 | 张官霖 | Torus-shaped cylinder circumduction rotating piston engine |
-
1997
- 1997-11-11 CN CN 97120268 patent/CN1217422A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1084431C (en) * | 1999-04-06 | 2002-05-08 | 金闽伟 | Two-stroke engine with aerated movable combustion chamber |
| CN100334336C (en) * | 2004-06-17 | 2007-08-29 | 马登科 | Double-cylinder circulating internal combustion engine and its method for mainly realizing thermal insulation and homogeneous lean burn |
| CN102996236A (en) * | 2011-09-19 | 2013-03-27 | 张官霖 | Torus-shaped cylinder circumduction rotating piston engine |
| WO2013041013A1 (en) * | 2011-09-19 | 2013-03-28 | Zhang Guanlin | Engine with torus-shaped cylinder and revolving piston |
| CN102996236B (en) * | 2011-09-19 | 2015-08-05 | 张官霖 | Torus sample cylinder ring turns piston engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |