CN85105115B - Recoil-pressure unit - Google Patents
Recoil-pressure unit Download PDFInfo
- Publication number
- CN85105115B CN85105115B CN85105115A CN85105115A CN85105115B CN 85105115 B CN85105115 B CN 85105115B CN 85105115 A CN85105115 A CN 85105115A CN 85105115 A CN85105115 A CN 85105115A CN 85105115 B CN85105115 B CN 85105115B
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- CN
- China
- Prior art keywords
- shell
- backflush device
- stroke
- cylinder
- backflush
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
A kind of Recoil-pressure unit is used to improve two stroke IC engine.Especially crankcase loop scavenging, intake piston two-stroke internal combustion engine intake delivery ratio.Be made up of shell and fixing backflush device in the enclosure, shell is provided with inlet hole and air outlet, leaves the gap between shell and the backflush device, and backflush device has a depression at least towards the one side of air outlet.Backflush device can reflect jet, is contained in cylinder air inlet or carburetor air mouth, the reflection jet " is regurgitated " jet that goes out with cylinder and liquidated mutually, thereby has reached the purpose of supercharging, raising delivery ratio.This Recoil-pressure unit is simple in structure, and can improve the power and the economic performance of internal-combustion engine.
Description
The present invention relates to the device of a kind of raising two stroke IC engine, especially crankcase scavenging, intake piston two-stroke internal combustion engine intake delivery ratio.
In two stroke IC engine in the past, as the crankcase scavenging intake piston two-stroke internal combustion engine intake.Finish at intake stroke, descent of piston carries out compression stroke, when suction port is not closed by piston as yet, by compression gas " is regurgitated " to suction port in the crankcase, Here it is, and phenomenon is regurgitated in air inlet, and the existence of this phenomenon has reduced the pressure of crank case gases, reduced delivery ratio, reduced the power performance and the Economy of this internal-combustion engine,, also wasted the mixed gas that " regurgitating " goes out for two-stroke gasoline engine, cause the very big waste of fuel oil, and befouling environment.What have utilizes the suction tude fluctuation effect or between air-strainer and Carburetor airtight plate is set, can improve delivery ratio but produce effects little, in order to reduce " regurgitating " loss, improve delivery ratio, some automobile-used two-stroke gasoline engines and high speed Marine outboard motor adopt leaf valve formula air inlet or the air inlet of disk (valve) formula, though this air inlet system effect is good, make relatively difficulty, cost is higher.And disc type air inlet low speed sealing difficulty, in a single day the reed of leaf valve fractures, and also may cause petrol engine badly damaged.Therefore, can't commonly on two stroke IC engine, use.Present most of crankcase scavenging two stroke IC engine still adopts the air inlet of piston gas port.
The object of the present invention is to provide a kind of simple, reliable and effective minimizing two stroke IC engine, especially crankcase scavenging, intake piston two-stroke internal combustion engine intake air inlet " to regurgitate " loss, improve the device of delivery ratio.
Disclose a kind of venting gas appliance that is used for internal-combustion engine in U.S. Pat 2206193, this device can prevent the reflection of exhaust, to improve the air displacement of cylinder.Recoil-pressure unit of the present invention is after said apparatus is improved, to be installed on induction system of internal combustion engine and to finish.
The invention example given below in conjunction with accompanying drawing illustrates formation of the present invention.
Accompanying drawing is the Recoil-pressure unit schematic representation that is combined into one with air-strainer.
Recoil-pressure unit of the present invention comprises that shell (2) and fixing in the enclosure backflush device (3) form, shell is provided with suction port (5) and air outlet (8), space (7) is arranged between shell and the backflush device, said backflush device has a depression (6) at least towards the one side of said air outlet, it is characterized in that, shell (2) is the cylinder thin-wall part, the sealing of one end, suction port (5) is opened on the close sidewall of closed end or on the closed end, the other end is for convergence conical section and carburetor air mouth (1) join with one heart, the backflush device of arranged concentric (3) is a spill cylinder thin-wall part in the enclosure, intracavity bottom has a short central awl, and this center cone height is much smaller than the height of cylinder, bottom outer surface joins with the outer cylinder slyness for spherical; Backflush device (3) is bearing on the shell inner cylindrical surface by the plectane spare of a band through hole.
Working condition of the present invention with crankcase scavenging piston gas port air inlet two-stroke gasoline engine be example in conjunction with the accompanying drawings.
Recoil-pressure unit is installed in carburetor air mouth (1) when locating, its working procedure is as follows: when the gasoline engine crank case is air-breathing, air enters from suction port (5), after filter (4) filtration, enter Carburetor from the space (7) between shell (2) and the backflush device (3), be mixed into mixed gas after cylinder air inlet enters in the crankcase with fuel oil.After air inlet finishes, descent of piston, mixed gas in the crankcase is compressed, suction port on the cylinder wall is not closed by piston as yet at this moment, and mixed gas by compression promptly " is regurgitated " from this suction port and gone out, and injects in depression (6) zone of backflush device (3) through carburetor air mouth (1), air-flow is reverse rapidly in backflush device, to carburetor air mouth (1) reflection, liquidating with " regurgitating " air-flow makes that the air pressure in crankcase increases in Carburetor the road in, compares for gasification thereby improved." regurgitate " mixed gas that goes out through recoil after, pressure and flow velocity all reduce.Be trapped in the Recoil-pressure unit, when suction stroke next time, again these mixed gass sucked in crankcases, reduced the waste of fuel oil, reduced the pollution of environment, saved the energy.
The shell of Recoil-pressure unit and backflush device can be designed to various shape and structural type according to the harmony of performance requirement, structural feature and the complete machine outward appearance of used two stroke IC engine.As, backflush device can be made independently form, also can be integral with air-strainer, Carburetor or other combination of devices, makes it have multiple function.Given in the accompanying drawing is exactly example with the air-strainer combination, and it is provided with a filter (4) and forms between suction port (5) and backflush device (3).
The present invention is simple in structure, and is easy to manufacture, and cost is low, can improve two stroke IC engine effectively.Especially the delivery ratio of crankcase scavenging intake piston two-stroke internal combustion engine intake reduces " regurgitating " loss, and can improve its power performance, improves the life-span and energy-conservation.
Claims (2)
1, a kind of two stroke IC engine that is used for, especially crankcase scavenging, intake piston two-stroke internal combustion engine intake improves the device of delivery ratio, form by shell (2) and fixing in the enclosure backflush device (3), shell is provided with suction port (5) and air outlet (6), leave space (7) between shell and the backflush device, said backflush device has a depression (6) at least towards the one side of said air outlet, feature of the present invention is: shell (2) is the cylinder thin-wall part, the sealing of one end, suction port (5) is opened on the close sidewall of closed end or on the closed end, another end is for convergence conical section and carburetor air mouth (5) join with one heart, the backflush device of arranged concentric (3) is a spill cylinder thin-wall part in the enclosure, intracavity bottom has a short central awl, this center cone height is much smaller than the height of cylinder, bottom outer surface joins with the outer cylinder slyness for spherical, and backflush device (3) is bearing on the shell internal conical surface by the plectane spare of a band through hole.
2, by the described device of claim 1, it is characterized in that: be separated with filter (4) between said suction port (5) and the said backflush device (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85105115A CN85105115B (en) | 1985-06-19 | 1985-06-19 | Recoil-pressure unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85105115A CN85105115B (en) | 1985-06-19 | 1985-06-19 | Recoil-pressure unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85105115A CN85105115A (en) | 1986-03-10 |
| CN85105115B true CN85105115B (en) | 1988-03-16 |
Family
ID=4794266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85105115A Expired CN85105115B (en) | 1985-06-19 | 1985-06-19 | Recoil-pressure unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85105115B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078383B (en) * | 2006-05-23 | 2011-06-08 | 安德烈亚斯.斯蒂尔两合公司 | Internal combustion engine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITRE20080003A1 (en) * | 2008-01-10 | 2009-07-11 | Emak Spa | '' DEVICE FOR POWERING AN INTERNAL COMBUSTION ENGINE '' |
-
1985
- 1985-06-19 CN CN85105115A patent/CN85105115B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078383B (en) * | 2006-05-23 | 2011-06-08 | 安德烈亚斯.斯蒂尔两合公司 | Internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85105115A (en) | 1986-03-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| WD01 | Invention patent application deemed withdrawn after publication |