CN102128103A - High-compression-ratio carburetor type gasoline engine - Google Patents
High-compression-ratio carburetor type gasoline engine Download PDFInfo
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- CN102128103A CN102128103A CN2010100272760A CN201010027276A CN102128103A CN 102128103 A CN102128103 A CN 102128103A CN 2010100272760 A CN2010100272760 A CN 2010100272760A CN 201010027276 A CN201010027276 A CN 201010027276A CN 102128103 A CN102128103 A CN 102128103A
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- carburetor
- compression ratio
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- spray pipe
- injection spray
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- 230000006835 compression Effects 0.000 claims abstract description 37
- 238000007906 compression Methods 0.000 claims abstract description 37
- 238000002347 injection Methods 0.000 claims abstract description 27
- 239000007924 injection Substances 0.000 claims abstract description 27
- 239000007921 spray Substances 0.000 claims abstract description 24
- 238000005507 spraying Methods 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000000889 atomisation Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 9
- 239000003921 oil Substances 0.000 description 8
- 239000000446 fuel Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000013028 emission testing Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a high-compression-ratio carburetor type gasoline engine. The compression ratio can be improved from normal 8.5 to 10-12, the defects of poor atomization and poor mixing of a normal carburetor are solved by mainly utilizing an injection spray pipe installed in a carburetor throat, the problem that knocking is generated after the compression ratio is improved is solved, and compared with the original engine, the gasoline engine provided by the invention has the advantages of larger power, lower energy consumption and better emission.
Description
Affiliated technical field:
The present invention relates to high compression ratio carburetor type petrol engine.
Background technique:
Further anxiety along with the world oil energy, American-European countries is more and more higher to discarded emission request, China also takes turns with motor tricycle two and has formulated the state III standard that equates with foreign standard, and the general purpose engine that non-road uses has also been formulated the Abgasgesetz that is equal to the America and Europe.China is the big producing country of motorcycle, but not the Annual output of road general purpose engine has surpassed 1,700 ten thousand, but most of product does not all reach the requirement of above Abgasgesetz.Want that the established rules of strict execution are pendulum serious problems in face of law enforcement agency and industry related personnel.
The put-put that existing non-road uses is main supporting with small generator, water pump, mowing machine etc., and owing to the particularity of its structure, again because of the restriction of factors such as weight and cost, it all adopts the fuel feeding form of carburetor type.The also most of Carburetor that adopts of the oil supply system of motorcycle engine, the minority top-of-the-range version is in the fuel system of exploitation " EFI ".So research efficient (power is big), put-put, especially small utility gasoline engine energy-conservation, that discharging is good are pursuing one's goal of the industry.
As described above, small utility gasoline engine (comprising most motorcycle gasoline engine) all is to adopt the carburetor type fuel system, so compression ratio can only be accomplished about 8.5.Want to improve compression ratio, conventional Carburetor does not reach necessary requirement, if improve compression ratio blindly, motor will produce " pinking ", and the reliability and the durability of power decline, oil consumption increase, motor all will reduce.The spout of the Carburetor of off-highroad general purpose engine is in the bottom of trunnion, utilizes the unlatching size of closure and the foam tube in lubricating cup to control together from what of the fuel oil of spout ejection, satisfy the required air fuel ratio of motor, but its atomizing is poor.The plunger type carburetor of motorcycle engine and constant-vacuum carburetter have just increased spindle, but the fogging degree of the gasoline of ejection is also not ideal enough.At present, have only the fuel system of employing " EFI " technology,, could improve compression ratio because its atomizing effect is good.Adopt the outer engine compression ratio that sprays of cylinder can accomplish about 10 that the in-cylinder injection motor of Bayerische Motorne Werke Aktiengeellschaft is because the pressure of its injection is big, atomizing is better, and compression ratio has brought up to 12.But its complex structure, the cost height can't, should not use on small-sized universal engine.
Because the particularity of non-road Small Universal motivation and motorcycle engine, develop a kind of that also do not have both at home and abroad, not only with Carburetor, but also can improve engine compression ratio, make it to keep characteristic of simple structure, energy consumption low, discharge, the imagination of new work engine that particularly power is big just carried.
The present invention is inventor 02 year design and applied for that patent " fixed choke spraying tubular type Carburetor " (patent No. ZL02242630.2) uses on the non-road general purpose engine with " the adjustable micro porous injection spray pipe Carburetor of butterfly valve type " (application number 200510086136x) through improving after; Design in 2000 and " the adjustable micro porous injection spray pipe Carburetor of plunger type " (application number 002034573) applied for a patent be applied to realize above-mentioned imagination on the motorcycle engine that needs constantly to change rotating speed and output power.
Summary of the invention:
The object of the present invention is to provide simple in structurely, cost does not increase substantially and power improves, energy consumption is low, and discharging is good, and compression ratio can be brought up to mini four-stroke, the two-stroke gasoline engine more than 10.If each stressed member redesign, compression ratio can bring up to 12.
The present invention includes popular style and the raising type of non-path link with high compression engine.Popular for the EPA emission standard that satisfies the U.S. and more the California standard that requires of maximum discharge design; The raising type is to require and the technological reserve done for from now on higher standard.The present invention also comprises the motor of the high compression ratio of motorcycle in addition.
The compression ratio of popular non-road general purpose engine is designed to 10-12, the Carburetor that it is joined is improved " fixed choke spraying tubular type Carburetor ", improved a former row and an above micropore thereof, make into more than two rows, guaranteed the three-dimensional spray regime of fan type like this, made with air mixing better.Suitably strengthened the throat pipe diameter of the Carburetor that mates with engine displacement in addition, made enough air enter the cylinder of motor.
The compression ratio of the non-road general purpose engine of raising type is designed to 10-12 equally, the Carburetor that it is joined is " the adjustable micro porous injection spray pipe Carburetor of butterfly valve type ", its main feature is that face cam cooperates the unlatching size of butterfly valve to control moving up and down of spindle, open what of injection spray pipe micropore, both guarantee accurately to supply with required oil mass, and can guarantee the purpose that atomizes and mix again.
The compression ratio design of the high compression engine of motorcycle is similarly 10-12, be " the adjustable micro porous injection spray pipe Carburetor of plunger type " with the Carburetor of its coupling, it utilizes the quantity of opening of the spindle control injection spray pipe micropore that moves together with plunger to realize the accurate supply of oil mass and the requirement that atomizes, mixes.
More than three kinds of high compression engines all be with " Carburetor ", all be to realize the purpose that atomizes, mix by " injection spray pipe ".
The design's minitype high voltage contracts and has compared following advantage than carburetor type petrol engine with existing miniature gasoline engine;
1, owing to adopted the injection spray pipe technology, not only atomize, and the mixing better off that installs than " EFI ".Because the injection spray pipe design is in whole trunnion, also there are many micropores at the middle part the highest in the degree of vacuum of trunnion, unlike the bottom of spout of traditional Carburetor at trunnion.So not only the gasoline atomizing through micropore ejection is good, and whole intake process is all in oil spout, and three-dimensional fan shape oil spout fully mixes with the air contact.The spout of " EFI " is just in some moments of an intake stroke, required 0.008 second time an of intake stroke for example, and injection time has only 0.001 second, injection time only accounts for 1/8 of intake stroke, so good inadequately with air mixing.From above analysis, adopt this technology, the compression ratio of motor can be accomplished with " in-cylinder injection " the same, reaches 12.
2, the engine power of comparable employing conventional carburetor improves more than 10%, can reach the power of common 173F h type engine h as the boosting type engine power of 168F.
3, the energy energy efficient is tested on the 168F petrol engine more than 15%, and fuel consumption rate can be accomplished below the 300g/kwh.
4, toxic emission can reduce more than 20%.
5, cost is low, does not increase cost than original type basically.
Description of drawings:
Accompanying drawing is the schematic representation of non-path link with one of high compression ratio carburetor engine popular (or title basic model).Because non-path link all is all to have indicated in aforesaid patent application document with the schematic representation of " the adjustable micro porous injection spray pipe Carburetor of plunger type " of " the adjustable micro porous injection spray pipe Carburetor of butterfly valve type " that mated of the raising type of high compression ratio carburetor engine and high compression ratio motorcycle engine institute adapted, so just simple.Figure number 1 is a high compression engine, and figure number 2 is fixed choke spraying tubular type Carburetors, and figure number 3 is injection spray pipes, and figure number 4 is pin pattern plugs, and figure number 5 is trunnions, and figure number 6 is foam tube, and figure number 7 is main jets, and figure number 8 is closures, and figure number 9 is chock plates.
Now be described with reference to the accompanying drawings the design.
According to accompanying drawing, figure number 1 high compression engine has been dwindled the volume of firing chamber, and compression ratio is brought up to more than 10, and the Carburetor of coupling is " the fixed choke spraying tubular type Carburetor " that atomizes, mixes, and sees figure number 2; Injection spray pipe sees figure number 3, changed two rows and the above micropore of two rows thereof into, and is more more reasonable than the micropore design that an original row and one row are above, and for example two rounds more help same air mixing than the oil spout of round fan type three-dimensional more; The spindle plug sees that figure number 4 is the same with original function; Trunnion sees that figure number 5 has strengthened 1-2mm than the throat pipe diameter of traditional Carburetor, guarantees that enough air pass through; Foam tube is seen figure number 6, and main jet is seen figure number 7 and closure, sees that the Design and Features of figure number 8 is the same with traditional Carburetor; Chock plate sees that figure number 9 also is provided with in order to start convenient.
Embodiment:
The personnel of the industry know, compression ratio is the ratio of the piston volume of cylinder more than the piston head (title firing chamber) and piston volume of cylinder more than the piston head (claiming the work total measurement (volume)) when lower dead center when top dead center.Reduce combustion chamber volume and just improved compression ratio.Our experimental prototype piston diameter 68mm, stroke 45mm, discharge capacity is the motor of the 168F of 163ml, and the thick cylinder liner of original 1.2mm is changed into the thick cylinder liner of 0.2mm, combustion chamber volume has reduced to about 18ml from 21.6ml like this, and compression ratio has brought up to 10; Injection spray pipe has designed 21 apertures of 3 rows (for the effect that guarantees to atomize, the hole diameter maximum does not surpass 0.4mm for a middle row, each aperture every 30 ° of one row's diameter 0.3mm of two limits) at the back side of airintake direction.The throat pipe diameter of former Carburetor is 14mm, now changes 15mm into.The ignition advance angle of motor has increased by 1 degree, becomes 12 degree from 11 original degree.Former 168F motor is the complete machine after supporting with generator, and rated power is 2 kilowatts, existing increased compression ratio after, rated power can be brought up to more than 2.2 kilowatts, engine test bench characteristic test consumption minimization can reach below the 280g/kwh, and through emission testing, test result is much better than the U.S. EPA emission standard.
Claims (7)
1. high compression ratio carburetor type petrol engine is characterized in that: the compression ratio of motor is between 10-12, and the Carburetor that matches is a fixed choke spraying tubular type Carburetor.
2. high compression ratio carburetor type petrol engine, it is characterized in that: the compression ratio of motor is between 10-12, and the Carburetor that matches is the adjustable micro porous injection spray pipe Carburetor of butterfly valve type.
3. high compression ratio carburetor type motorcycle gasoline engine, it is characterized in that: the compression ratio of motor is between 10-12, and the Carburetor that matches is the adjustable micro porous injection spray pipe Carburetor of plunger type.
4. the Carburetor of Engine Matching according to claim 1, form by closure, fixed choke, injection spray pipe, pin pattern plug, foam tube, main jet, chock plate and Carburetor body etc., injection spray pipe is installed in the whole trunnion, the back side at the trunnion airintake direction of injection spray pipe is provided with two row and above apertures thereof, and trunnion is than the increasing 1-2mm of traditional Carburetor.
5. the Carburetor of Engine Matching according to claim 2 by the face cam that is installed on the throttle plate pin, cooperates the unlatching size of butterfly valve, and the control spindle moves up and down, and has realized opening the micropore quantity of required injection spray pipe.
6. the Carburetor of Engine Matching according to claim 3 is controlled the quantity of opening of required injection spray pipe micropore by the spindle that moves together with plunger.
7. according to claim 1,2,3 described motors, ignition advance angle shifts to an earlier date 1 ° than the ignition advance angle of conventional engine--and 3 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100272760A CN102128103A (en) | 2010-01-18 | 2010-01-18 | High-compression-ratio carburetor type gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100272760A CN102128103A (en) | 2010-01-18 | 2010-01-18 | High-compression-ratio carburetor type gasoline engine |
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| Publication Number | Publication Date |
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| CN102128103A true CN102128103A (en) | 2011-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010100272760A Pending CN102128103A (en) | 2010-01-18 | 2010-01-18 | High-compression-ratio carburetor type gasoline engine |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1432728A (en) * | 2002-01-06 | 2003-07-30 | 上海非常化油器有限公司 | Microporous nozzle carburator |
| CN2564763Y (en) * | 2002-07-21 | 2003-08-06 | 上海非常化油器有限公司 | Fixed choke spraying pipe-type carburetor |
| CN1896485A (en) * | 2005-07-14 | 2007-01-17 | 上海非常化油器有限公司 | Micropore spraying piping carburator of butterfly-valve adjusting |
| CN1900509A (en) * | 2005-07-19 | 2007-01-24 | 上海非常化油器有限公司 | Fixed choke adjustable micro porous spray tube gas mixing regulator |
-
2010
- 2010-01-18 CN CN2010100272760A patent/CN102128103A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1432728A (en) * | 2002-01-06 | 2003-07-30 | 上海非常化油器有限公司 | Microporous nozzle carburator |
| CN2564763Y (en) * | 2002-07-21 | 2003-08-06 | 上海非常化油器有限公司 | Fixed choke spraying pipe-type carburetor |
| CN1896485A (en) * | 2005-07-14 | 2007-01-17 | 上海非常化油器有限公司 | Micropore spraying piping carburator of butterfly-valve adjusting |
| CN1900509A (en) * | 2005-07-19 | 2007-01-24 | 上海非常化油器有限公司 | Fixed choke adjustable micro porous spray tube gas mixing regulator |
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Application publication date: 20110720 |