CN2256942Y - Complementary air intake two-stroke engine - Google Patents
Complementary air intake two-stroke engine Download PDFInfo
- Publication number
- CN2256942Y CN2256942Y CN 95227973 CN95227973U CN2256942Y CN 2256942 Y CN2256942 Y CN 2256942Y CN 95227973 CN95227973 CN 95227973 CN 95227973 U CN95227973 U CN 95227973U CN 2256942 Y CN2256942 Y CN 2256942Y
- Authority
- CN
- China
- Prior art keywords
- cylinder
- air inlet
- crankcase
- stroke engine
- piston
- 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
- 230000000295 complement effect Effects 0.000 title claims abstract description 13
- 235000014676 Phragmites communis Nutrition 0.000 abstract description 4
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000009423 ventilation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Images
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
A complementary air intake two-stroke engine is composed of cylinder, crankcase and carburetor, the reed valve is installed on the joint surface of cylinder and crankcase, and the air inlet is opened under the skirt of piston.
Description
The utility model relates to a kind of suction port and the complementary simultaneously complementary air inlet two stroke engine that uses of flute spring valve, belongs to the motor car engine field.
Traditional crankcase air inlet method is:
1, traditional gas port air inlet scheme, when promptly piston was positioned near the upper dead center, the suction port of below, piston skirt was decontroled, to the crankcase air inlet.
2, flute spring valve air inlet scheme is positioned at the flute spring valve on the crankcase wall, and when piston stroking upward, reed opens and to the crankcase air inlet.
3, rotary plate valve ventilation scheme, be positioned at and open a suction port on the air inlet disk on the radius bar end face, be adjacent to air inlet plane on the crankcase that has suction port, when piston stroking upward, align suction port gradually, suction port is opened greatly to all-pass, reduce subsequently, piston is closed during to upper dead center, finishes the crankcase air inlet.
The pluses and minuses of three kinds of schemes:
The gas port air inlet, when engine speed was higher, period of intake was obviously not enough, and air inflow reduces, and effective compression ratio reduces, and engine thermal efficiency is reduced, and oil consumption is increased.
It is that the negative pressure that forms during piston stroking upward is pushed open, when engine speed is higher by in the crankcase that the reed of flute spring valve opens, period of intake shortens, reed open increasing, the corresponding increase of crankcase negative pressure, reduced compression ratio like this, reduced engine thermal efficiency, oil consumption is increased.
The rotary plate valve air inlet can cooperate engine speed preferably, but the gas distribution plate rotation time has frictional work consumption, and oil consumption occupies high.
The purpose of the complementary air inlet two stroke engine of the utility model is the frictional work consumption when air inlet deficiency or rotary plate valve ventilation when being to overcome the high rotating speed of such scheme, compression ratio is reduced or frictional work consumption big, cause the big shortcoming of oil consumption.And the structure of the employing suction port of development and flute spring valve air inlet simultaneously, complementary air inlet has guaranteed the sufficient air inlet of cylinder, makes motor that the good compression ratio be arranged, and has improved the thermal efficiency of motor, has reduced oil consumption, has reduced CO concentration and the smoke intensity in the exhaust emissions.
The intake method of the complementary air inlet two stroke engine of the utility model is, use suction port and flute spring valve to the crankcase air inlet simultaneously, piston begins when up, by flute spring valve at first to the crankcase air inlet, when suction port is decontroled in the piston skirt, again by suction port to the crankcase air inlet, make the crankcase air inlet abundant like this, crankcase pressure is higher during ventilation, make scavenging clean, aeration quantity is big in the cylinder, obtains higher compression ratio, improved motor the thermal efficiency, reduced oil consumption, improved the condition of exhaust emissions.
The structure of the complementary air inlet two stroke engine of the utility model is that cylinder is connected with crankcase, on the cylinder junction plane on cylinder and the crankcase junction plane flute spring valve is housed.Piston is housed in the cylinder, when piston rises to the dead point, has suction port on cylinder below the piston skirt, Carburetor is connected with cylinder.
Accompanying drawing is the structural representation of the complementary air inlet two stroke engine of the utility model.
Below in conjunction with accompanying drawing the complementary air inlet two stroke engine of the utility model is described further.
(1) cylinder, (2) piston, (3) relief opening, (4) crankcase, (5) suction port, (6) flute spring valve, (7) compress spiral shell fourth, (8) Carburetor among the figure
Cylinder (1) is connected with crankcase (4) as shown in FIG., on the junction plane of the cylinder (1) on cylinder (1) and crankcase (4) junction plane flute spring valve (6) is housed, and is fixing with compressing spiral shell fourth (7).Piston (2) is housed in the cylinder (1), when being positioned at upper dead center, on the skirt section below cylinder (1) of piston (1), has suction port (5) at piston (2).Carburetor (8) is connected with cylinder (1).
Adopt this complementary air inlet two stroke engine, can in the speed range of broad, obtain sufficient air inlet, strengthened compression ratio, improved the thermal efficiency of motor, improved power, improved the exhaust emissions condition.
Claims (1)
1, a kind of by cylinder, crankcase, the complementary air inlet two stroke engine that Carburetor is formed, it is characterized in that being equipped with compressing the fixing flute spring valve (6) of spiral shell fourth (7) on the junction plane of the cylinder (1) on the junction plane of described cylinder (1) and crankcase (4), cylinder (1) inner carrier (2) has suction port (5) when being positioned at upper dead center on cylinder below the piston skirt (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95227973 CN2256942Y (en) | 1995-12-08 | 1995-12-08 | Complementary air intake two-stroke engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95227973 CN2256942Y (en) | 1995-12-08 | 1995-12-08 | Complementary air intake two-stroke engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2256942Y true CN2256942Y (en) | 1997-06-25 |
Family
ID=33873674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95227973 Expired - Fee Related CN2256942Y (en) | 1995-12-08 | 1995-12-08 | Complementary air intake two-stroke engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2256942Y (en) |
-
1995
- 1995-12-08 CN CN 95227973 patent/CN2256942Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |