CN201358834Y - Internal supercharged four-stroke engine - Google Patents
Internal supercharged four-stroke engine Download PDFInfo
- Publication number
- CN201358834Y CN201358834Y CNU2009200065180U CN200920006518U CN201358834Y CN 201358834 Y CN201358834 Y CN 201358834Y CN U2009200065180 U CNU2009200065180 U CN U2009200065180U CN 200920006518 U CN200920006518 U CN 200920006518U CN 201358834 Y CN201358834 Y CN 201358834Y
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- China
- Prior art keywords
- stroke engine
- air
- crankcase
- cylinder body
- otto
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- 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
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- 239000007789 gas Substances 0.000 abstract description 15
- 239000000446 fuel Substances 0.000 abstract description 8
- 239000002912 waste gas Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 230000007812 deficiency Effects 0.000 description 7
- 239000007921 spray Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010304 firing Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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Abstract
Disclosed is an internal supercharged four-stroke engine which is based on a well-known'Otto' reciprocating piston four-stroke engine structure and utilizes the well-known two-stroke engine technique to seal a crankcase, an air inlet passage (11) equipped with a one-way air inlet valve (9) is arranged on a crankcase body (14) or an appropriate position of a cylinder body (5), an air guiding passage (10) communicated to inner space of the cylinder body and a crankcase cavity (12) is arranged on the cylinder body (5), and an air guiding hole (8) with a certain air injection designed angle is arranged on the inner wall of the cylinder body (5). When working, the internal supercharged four-stroke engine utilizes the crankcase to suck air and prepress the air, injects the air inside the cylinder body through the air guiding passage (10) and the air guiding hole (8), thereby enlarging air intake. The air sucked by the crankcase is mixed with flammable mixing gas sucked by an air inlet door to burn, thereby enabling the'Otto' reciprocating piston four-stroke engine to have functions of supercharging, combustion-supporting, heat insulating, reducing temperature, realizing fuel lean burn and completely discharging waste gas during an'Otto' circulating process.
Description
Affiliated technical field
The utility model relates to a kind of reciprocating piston type four stroke engine, especially has the reciprocating piston type four stroke engine of air intake pressurized function.
Background technique
1876 German's Otto (Nicolaus A.Otto) invent and brought into use the reciprocating piston type four stroke engine, its " Otto " circulation theory and basic structure are known, are not repeated here.Its known structure of reciprocating piston type four stroke engine and principle exist the deficiency of essence: main one is that reciprocal inertia force and the moment of inertia that reciprocating motion of the pistons causes can not obtain complete equilibrium, this inertial force size and rotating speed square are directly proportional, the engine running smoothness is descended, restriction develops to high rotating speed, the power consumption energy is decreased in its running itself, during high rotating speed, the physical arrangement of piston, connecting rod, bent axle etc. is badly damaged; The 2nd, there are three stroke stages to rely on flywheel inertia rotation fully in " Otto " circulation, very inhomogeneous of the power, moment of torsion output that causes motor; The 3rd, air inflow is few, and exhaust is not thorough, causes burning insufficient, produces and pollutes waste gas, influences fuel thermal efficiency or the like.
The utility model is only at the 3rd deficiency, and other deficiencies are not considered.A lot of new technologies have appearred at the 3rd deficiency, as: increase intake valve and exhaust valve quantity (3 valves, 4 valves, 5 valves etc.); The electronic oil injection technology; Air intake pressurized technology (engine driven supercharging, turbosupercharging etc.); The variable timing Valves Technology; The in-cylinder direct injection technology; Lean burn technology or the like, these technology make that the fuel thermal efficiency of reciprocating piston type four stroke engine is improved, toxic emission has obtained effective improvement, but its complex structure, rate of fault height limit it and make development, especially exhaust is still not thorough, can't overcome the deficiency of essence.
Summary of the invention
In order to overcome above-mentioned the 3rd deficiency of reciprocating piston type four stroke engine, the utility model provides a kind of interior supercharging four stroke engine, this motor is not only simple in structure, and can overcome above-mentioned the 3rd deficiency of reciprocating piston type four stroke engine fully, promptly increase air imbibed quantity, significantly improve fuel thermal efficiency, thoroughly scavenge, simultaneously can reduce engine temperature, lean-burn fuel saving.Be further perfect to " Otto " reciprocating piston type four stroke engine basic structure and circulation theory.
The technological scheme that its technical problem that solves the utility model adopts is: based on the structure of known " Otto " reciprocating piston type four stroke engine, use for reference known two stroke engine technology, pressurized crankcase; And go up or the appropriate location of cylinder body (5) is offered intake duct (11) that breather cheek valve (9) are installed, offers the airtube (10) that is communicated with space and crankcase cavity (12) in the cylinder on cylinder body (5), offer the gas port (8) with certain jet design angle on cylinder body (5) inwall at crankcase body (14), make that the reciprocating piston type four stroke engine has in " Otto " cyclic process that supercharging is combustion-supporting, heat insulation and heat control, fuel lean-burn, the function that thoroughly scavenges.
The beneficial effects of the utility model are exactly, the reciprocating piston type four stroke engine is not being had under the external pressurization device condition, increase the air inlet amount, improve the pneumatics ratio, fuel is thoroughly burnt, improve the reciprocating piston type four stroke engine thermal efficiency and waste gas emission standard, and structure is very simple.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified
Fig. 1 is a structural representation of the present utility model
Fig. 2 is that engine charge stroke () illustrates schematic representation
Fig. 3 is that engine charge stroke (two) illustrates schematic representation
Fig. 4 is an engine compresses stroke explanation schematic representation
Fig. 5 is a motor expansion stroke explanation schematic representation
Fig. 6 is that engine exhaust strokes () illustrates schematic representation
Fig. 7 is that engine exhaust strokes (two) illustrates schematic representation
Fig. 8 is a compression stroke stage gas in the jar distribution schematic diagram
Among the last figure: 1, spark plug, 2, the firing chamber, 3, intake valve, 4, exhaust valve, 5, cylinder body, 6, piston, 7, connecting rod, 8, gas port, 9, breather cheek valve, 10, airtube, 11, intake duct, 12, the crankcase cavity, 13, bent axle, 14, crankcase body, 15, inflammable mixture, 16, pressurized air,
Embodiment
Intake duct among Fig. 1 (11) can be opened on the crankcase body (14), also can be opened on the cylinder body (5), and present embodiment is be that example is illustrated intake duct (11) is opened in cylinder body (5) goes up.
Fig. 2 to Fig. 7 is four stroke state explanation schematic representation of the utility model engine operation principle.
Fig. 2, Fig. 3 are two states of aspirating stroke, wherein Fig. 2 state is that exhaust valve (4) cuts out, intake valve (3) is opened, piston (6) is descending, the interior negative pressure that produces of cylinder, suck inflammable mixture (15) from intake valve (3), the interior air of crankcase cavity (12) is compressed simultaneously.Fig. 3 state is that intake valve (3) is closed, closely lower dead center, gas port (8) unlatching, crankcase cavity (12) compressed air (16) spray in the cylinder through airtube (10) and gas port (8) piston (6).Because of gas port (8) has been designed to certain jet angle,, the inflammable mixture in the cylinder (15) is held up so pressurized air (16) is swirling eddy (eddy current) state when gas port (8) sprays in the cylinder.This moment, gas in the jar distributed as shown in Figure 8: the cylinder internal upper part is that denseer inflammable mixture (15), concentration is thinning from top to down, the bottom is pure pressurized air (16), and spray into because of air-flow rotation, making the bottom casing wall also is pure pressurized air (16) all around, and the centre is wrapped in inflammable mixture (15).This state can remain to compression always and end.
Fig. 4 is the compression stroke state.Piston (6) is up, inflammable mixture (15) and pressurized air (16) are further compressed in the cylinder, and crankcase cavity (12) produces negative pressure, breather cheek valve (9) unlatching, pure air and is inhaled into crankcase cavity (12) through intake duct (11) simultaneously.
Fig. 5 is the expansion stroke state.Be the inflammable mixture (15) of distribution of gas state shown in Figure 8 and pure air (16) by piston (6) be compressed in the firing chamber (2), spark plug (1) is lighted a fire, inflammable mixture (15) work by combustion, to promote piston (6) descending, the air in the crankcase cavity (12) is compressed simultaneously.Inflammable mixture (15) is in combustion process, and the pure air of bottom can be combustion-supporting, can also completely cut off thermal energy conduction simultaneously and give cylinder body (5) and piston (6), reduces cylinder temperature.
Fig. 6, Fig. 7 are two states of exhaust stroke.When Fig. 6 state was the descending nearly lower dead center of piston (6), exhaust valve (4) was opened, and waste gas is got rid of through exhaust valve (4) under pressure; Gas port (8) is opened, and the pressurized air (16) in the crankcase cavity (12) from gas port (8) ejection, is swirling eddy (eddy current) state to carrying out scavenging and cooling in the cylinder through airtube (10).Fig. 7 state is that piston (6) is up, and waste gas finishes when exhaust valve (4) is further got rid of to top dead center, and the only surplus pure air that sprays into from gas port (8) of the residual gas in firing chamber this moment (2), waste gas is thoroughly got rid of.
Next enter next round circulation, the motor running that goes round and begins again.
See by above explanation, the utility model is followed the Otto cycle principle fully, only through having increased crankcase cavity (12) air compression after the architecture advances and gas port (8) sprays into process, its effect has three: 1, increases the air inflow of air in the cylinder, improved the pneumatics ratio, made burning more abundant.2, carry out scavenging and cooling earlier during exhaust, it is more thorough that waste gas is got rid of.3, piston (6) and cylinder body (5) there are the effect of heat insulation and heat control, and easy realization fuel lean-burn.
Claims (5)
1, a kind of interior supercharging four stroke engine, it is characterized in that: based on the structure of known " Otto " reciprocating piston type four stroke engine, pressurized crankcase, and offer intake duct (11) in the appropriate location of crankcase body (14) or cylinder body (5), offering airtube (10) on the cylinder body (5), on cylinder body (5) inwall, offering gas port (8).
2, require described interior supercharging four stroke engine according to right 1, it is characterized in that:, adopt the mode of the pressurized crankcase of known two stroke engine, pressurized crankcase based on the structure of known " Otto " reciprocating piston type four stroke engine.
3, require described interior supercharging four stroke engine according to right 1, it is characterized in that: in the intake duct (11) that the appropriate location of crankcase body (14) or cylinder body (5) is offered, breather cheek valve (9) is installed.
4, require described interior supercharging four stroke engine according to right 1, it is characterized in that: the gas port of offering on cylinder body (5) inwall (8) has certain jet design angle, is swirling eddy (eddy current) state in the time of can making the gas ejection in cylinder.
5, according to right 1 require described in the supercharging four stroke engine, it is characterized in that the airtube (10) offered on the cylinder body (5), can get up space in the cylinder and crankcase cavity (12) connection by gas port (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200065180U CN201358834Y (en) | 2009-02-24 | 2009-02-24 | Internal supercharged four-stroke engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200065180U CN201358834Y (en) | 2009-02-24 | 2009-02-24 | Internal supercharged four-stroke engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201358834Y true CN201358834Y (en) | 2009-12-09 |
Family
ID=41424597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200065180U Expired - Fee Related CN201358834Y (en) | 2009-02-24 | 2009-02-24 | Internal supercharged four-stroke engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201358834Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100358A (en) * | 2014-07-08 | 2014-10-15 | 邱世军 | Supercharged engine |
| CN112253307A (en) * | 2019-07-06 | 2021-01-22 | 罗天珍 | Intercooling method for instantaneous conduction, throttling and intercooling of combustion chamber and heat-insulating internal combustion engine |
-
2009
- 2009-02-24 CN CNU2009200065180U patent/CN201358834Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100358A (en) * | 2014-07-08 | 2014-10-15 | 邱世军 | Supercharged engine |
| CN112253307A (en) * | 2019-07-06 | 2021-01-22 | 罗天珍 | Intercooling method for instantaneous conduction, throttling and intercooling of combustion chamber and heat-insulating internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20100224 |