CN204877672U - Automatically controlled many fuel two -cycle engine that directly spouts - Google Patents
Automatically controlled many fuel two -cycle engine that directly spouts Download PDFInfo
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- CN204877672U CN204877672U CN201520343561.1U CN201520343561U CN204877672U CN 204877672 U CN204877672 U CN 204877672U CN 201520343561 U CN201520343561 U CN 201520343561U CN 204877672 U CN204877672 U CN 204877672U
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Abstract
The utility model relates to an automatically controlled many fuel two -cycle engine that directly spouts, it includes engine cylinder (27), and piston (26) of coasting in the engine cylinder, one air pump (13), one connect in air / fuel rail (6) of air pump and directly nozzle (7), one solitary fuel tank (1) and rather than fuel pump (3) through specific tube coupling, and with the fuel pump reaches rather than the oil pump through specific tube coupling (17) through fuel nozzle (5) of specific tube coupling, one solitary machine oil case (12), and with oil injection nozzle (23) that the oil pump links to each other, one ECU ( engine control unit) (11) reach battery (22) rather than connecting through specific conducting wire, fuel pump (3), oil pump (17), fuel nozzle (5), directly nozzle (7), ignition coil (10) reach rather than associative spark plug (8), temperature sensor (9), crankshaft position sensor (14), throttle position sensor (15), ambient pressure sensor (20), oil pump (17) and ignition switch (21).
Description
Technical field
The utility model relates to a kind of electric controlled direct spray multi fuel two-cycle engine, particularly unmanned plane, outboard machine two-cycle engine.
Background technique
As everyone knows, two-cycle engine is mainly limited to motorcycle and uses, and this is mainly due to the simplification of the structure that amount of parts is few and bring thereupon.
Compared with four stroke engine, other advantages of two-cycle engine: the larger power produced under same displacement and moment of torsion more regularly, this just do because two-cycle engine often turns around a merit bring (four stroke engine often takes two turns and does a merit).
But at automotive field, passive aspect defeats these advantages: compared with four stroke engine, two-cycle engine oil consumption is higher, has more pollutant emission, and noise is larger, needs maintenance frequently.
Particularly oil consumption and discharge, the regulation that can be subject to increasingly stringent and the impact more paid close attention to from the common people.
But in unmanned plane and outboard machine field, the advantage of two-cycle engine can be embodied completely.Its reason is that these the two kinds power/weight ratios applied for motor have higher requirement, less to the problem such as noise, discharge attention rate.
Based on above logic, a kind of novel electric controlled direct spray multi fuel two-cycle engine in unmanned plane and outboard machine field seemingly one better select, the particularly two-cycle engine of high power/weight ratio, low fuel oil consumption, low engine oil consumption and multi fuel.
Summary of the invention
The utility model object is to provide a kind of two-cycle engine with the improvement of traditional two-cycle engine disadvantages associated that eliminates, and it makes use of better combustion method and lubricating system so that it more effectively can be used to traditional application.
Another object of the present utility model is to provide a kind of two-cycle engine and is particularly suitable for unmanned plane or outboard machine application.
The above object obtains according to a kind of two-cycle engine as described below.
A kind of electric controlled direct spray multi fuel two-cycle engine, comprise: a crankcase comprising at least one cylinder (27), corresponding to the engine piston in cylinder interior movement between top dead center and lower dead center (26) of number of cylinders, to be supported in described crankcase with at least two bearings and to comprise the bent axle (31) of the crank corresponding to number of cylinders, corresponding to the connecting rod (28) being articulated with the described crank of described engine piston (26) and described bent axle (31) of number of cylinders, a crankshaft position sensor (14), corresponding to suction port and the scavenging port of number of cylinders, corresponding to the spark plug (8) of number of cylinders, an independent sump (12) and an independent fuel tank (1) being provided with fuel component sensor, a closure (16), one be arranged on closure (16) after independently oil injection nozzle (23) and provide the oil pump (17) of required pressure for described oil injection nozzle (23), it is characterized in that: also comprise an air-fuel rail (6), one be arranged on crankcase body by the air pump (13) of bent axle Direct driver, an electronically controlled fuel pump (3) being applicable to various different liquids fuel, corresponding to fuel nozzle (5) and the straight spraying nozzle (7) of number of cylinders, an ECU (control unit of engine that can gather all the sensors respectively and control different power unit, 11), wherein, described air pump (13) provides the pressurized air of steady pressure for air-fuel rail (6) and straight spraying nozzle (7), described fuel pump (3) provides fuel oil for air-fuel rail (6), fuel oil is sprayed into air-fuel rail (6) by described fuel nozzle (5), fuel air mixture is sprayed into cylinder by described straight spraying nozzle (7).
Described motor is applicable to various different liquid fuel, use the mode running engine all using spark plug (8) to light a fire during different liquids fuel, and the moment that ECU (11) can light a fire to adjust straight spraying nozzle (7) time for spraying and spark plug (8) according to the fuel component sensor automatic discrimination fuel type in fuel tank (1).Described liquid fuel is gasoline, diesel oil, aviation kerosine or its mixture.
Described oil pump (17) junctor fuel tank (12) is also controlled by ECU (11), described oil pump (17) provides the machine oil of required pressure for the independent oil injection nozzle (23) after being installed on engine air throttle (16), and described oil injection nozzle (23) controls emitted dose and discharge time separately by ECU (11) equally.
Described air pump (13), drives (24) by the drive plate of the band curved surface of bent axle one end.
Described air-fuel rail (6), is installed on engine cylinder cover (25) top, and the pressure of air and fuel oil is regulated by ECU (11) accordingly with the difference of engine operating condition.
Described straight spraying nozzle (7), be installed in described air-fuel rail (6), the mixture of air and fuel oil is sprayed into cylinder (27), described straight spraying nozzle (7) and fuel nozzle (5) use simultaneously, fuel oil is sprayed into air-fuel rail (6) by fuel nozzle (5), and the mixture in rail is sprayed into cylinder (27) at reasonable time by described straight spraying nozzle (7) again.Described straight spraying nozzle (7) is arranged on engine cylinder cover (25), and position is relative with cylinder centerline and radial perpendicular to cylinder, and spark plug (8) and described straight spraying nozzle (7) form 45 ± 10 ° of angles.
Described ECU (11) carries out independent control according to special control strategy to fuel nozzle (5), straight spraying nozzle (7) and spark plug (8), first air-fuel rail (6) is sprayed into by the fuel oil through accurate measurement via fuel nozzle (5), then control straight spraying nozzle (7) and air fuel mixture is sprayed into cylinder (27), the precise moments after air fuel mixture sprays into cylinder controls spark plug (8) and lights a fire.
Compared to traditional two-cycle engine, the advantage of described motor is as follows:
1) generation of wet wall is reduced;
2) the fuel-oil atmozation degree promoted can make the Sauter mean diameter of various liquid fuel reach less than 10 microns when the jet pressure lower than 10bar, realizes the stratified mixture combustion in cylinder and lean combustion;
3) air fuel ratio electronic control more flexibly, it can help:
Reduce the oil consumption of 35-50%, i.e. CO2 emissions;
Reduce by the hydrocarbon emission amount of 85%;
Reduce by the CO (carbon monoxide converter) emission of 70%;
Reduce the discharge of cold start-up and thermal starting;
Increase the condition range of lean combustion;
Promote the transformation efficiency of reprocessing;
Promote EGR rate (percent of exhaust gas recirculation)
4) conforming lifting is discharged.Experimentally, namely the discharge conformity of the two-cycle engine manufactured by the utility model improves than traditional two-cycle engine greatly with the emission level of money motor Different Individual.
5) advantage of described motor is also the cold starting performance compared to traditional two-stroke engine high degree improvement, experimentally, the two-cycle engine manufactured by the utility model can start smoothly when-30 DEG C of ambient temperatures when not adopting any warm-up auxiliary system and stability is high.
6) described motor can be applied various conventional liquid fuel neatly and comprises gasoline, diesel oil, aviation kerosine or its mixture etc.
7) the low-pressure electric controlled direct spray type oil supply system of described motor employing, improve control accuracy and engine operation stability on the one hand, the NVH level of motor is improved greatly, greatly reduces the requirement of motor for oil-fired system on the other hand, thus reduce manufacture cost.
8) except the minimizing of discharge, this kind of motor also has other advantage, such as reduces brake specific fuel consumption, increases output power under full engine load operating mode and moment of torsion etc.
Accompanying drawing explanation
Fig. 1 shows the system construction drawing of the two-cycle engine involved by the utility model.
Fig. 2 shows the parts transversely sectional drawing of two cylinder two-cycle engines manufactured according to the utility model, based on one by cylinder axis and perpendicular to the plane of crankshaft center.
Fig. 3 shows the partial longitudinal section of motor as shown in Figure 2, passes through the plane of two cylinder centerlines based on one.
Fig. 4 shows the control strategy that ECU (11) that the utility model relates to lights a fire to oil spout.
Fig. 5 shows mounting point and the driving principle of the air pump (13) that the utility model relates to.
Description of reference numerals
In figure: 1, fuel tank, 2, fuel filter, 3, fuel pump, 4, fuel pressure regulating valve, 5 fuel nozzles, 6, air-fuel rail, 7, straight spraying nozzle, 8, spark plug, 9, temperature transducer, 10, spark coil, 11, ECU, 12, sump, 13, air pump, 14, crankshaft position sensor, 15, throttle position sensor, 16, closure, 17, oil pump, 18, air pressure stabilizing cavity, 19, air-strainer, 20, ambient pressure sensor, 21, ignition switch, 22, storage battery, 23, oil injection nozzle, 24, air pump drive plate, 25, engine cylinder cover, 26, engine piston, 27, cylinder, 28, connecting rod, 29, crank, 30, motor, 31, bent axle.
Embodiment
Below in conjunction with accompanying drawing 1-5, enforcement of the present utility model is described in further detail, but to those skilled in the relevant art, according to thought of the present utility model, all likely changes in specific embodiments and applications.So, this specification should be interpreted as restriction of the present utility model.Any change under the restriction of the utility model basic thought all belongs within the utility model category, and scope of patent protection of the present utility model should be limited by claim.
As Figure 1-3, described engine working process is as follows: during engine operation, when piston (26) come downwards to open suction port time, intake process starts.Fresh air arrives closure (16) after filter cleaner (19) and pressure stabilizing cavity (18), after a certain amount of machine oil is sprayed into closure (16) by the oil injection nozzle (23) after same subject throttle (16).Air and wellatomized machine oil mixture enter engine crankcase, first lubricate the motion in crankcase and cool, then by entering cylinder (27) with the intake duct of suction port UNICOM.When piston stroking upward enters compression process to closing porting rear engine, now machine oil air mixture lubricates the friction pair in cylinder.Meanwhile, the fuel air mixture of all set premix in air-fuel rail (6), this air fuel mixture provides pressurized air by air pump (13), fuel oil is sprayed into by fuel nozzle (5), when piston (26) goes upward to top dead center annex, fuel air mixture sprays into cylinder (27) through straight spraying nozzle (7), and at appropriate time after this, spark plug (8) is lighted a fire, motor enters combustion expansion process, promotes piston (26) descending acting.When piston (26) come downwards to open relief opening time, exhaust process starts until next intake process.Described above is complete job circulation of this motor.
As shown in Figure 4, when cylinder (27) inner carrier (26) runs to budc (BTDC) 155 °, the fuel nozzle (5) corresponding to this cylinder (27) starts fuel oil to be sprayed into air-fuel rail (6), this fuel nozzle (5) discharge time is determined by concrete engine operating condition, from 5 ° of crank angles to 50 ° of crank angles not etc.; When budc (BTDC) 80 °, straight spraying nozzle (7) is again by the air fuel mixture direct cylinder injection (27) in air-fuel rail (6), the discharge time of this straight spraying nozzle (7) is determined by concrete engine operating condition, from 5 ° of crank angles to 50 ° of crank angles not etc.; Light a fire when straight spraying nozzle (7) starts the appropriate time after spraying, concrete time of ignition from spray after 3 ° of crank angles to 10 ° of crank angles not etc.
Motor described in the utility model fuel oil and air pressure all at below 10bar time the Sauter mean diameter of various injected fuel spray just can be made to reach less than 10 microns, and well-known ordinary straight injection diesel engine can make Sauter mean diameter reach the magnitude of 10 microns when the jet pressure up to more than 1600bar, such one side just greatly reduces the requirement of motor for oil-fired system, make spraying diffusion mixing process more rapid on the other hand, make the liquid fuels such as diesel oil, aviation kerosine and gasoline can both realize ignition combustion on described motor.The mode of lighting can increase substantially engine speed, improve specific power, alleviate engine weight, (comparing with the compression ignition engine such as conventional diesel and kerosene engine), these advantages are for most important unmanned plane and outboard machine application.
As shown in Figure 5, in the air pump drive system of motor described in the utility model and fuel oil supply system, the pressurized air of described system is provided by a little plunger-type air pump (13), and it can be driven by an eccentric air pump drive plate (24) be arranged on bent axle.Fresh air after the filtration that crankcase flows into is inhaled in plunger cavity by air pump gas-entered passageway, because described drive plate (24) is eccentric design, therefore the motor described drive plate (24) that often turns around all can make air pump plunger to-and-fro motion once, thus by the air compressing in plunger cavity.Air after compression is subsequently by sending into air-fuel rail (6) (air pump outlet is connected by pipeline with suction tude) at a butterfly valve of air pump head and air pump outlet.This design does not need separately for air pump provides belt, belt pulley, compressor rod-crankshaft, intake valve, suction tude and air intake filter.By avoiding designing these unwanted component, cause system and succinct, exquisite and low cost, and can be fabulous meet engine performance requirement.Described system and air-fuel rail (6), fuel pump (3), fuel nozzle (5), straight spraying nozzle (7) constitute the fuel oil supply system (working principle as Fig. 4 accompanying drawing illustrate as described in) of motor described in model utility jointly.The major character of fuel oil supply system:
1) the fabulous atomization (average Suo Te diameter is less than 10 microns) by using the pressurized air of low pressure to reach fuel oil;
2) inflammable mixture be formed in cylinder can be accelerated;
3) a small amount of air owing to spraying, insensitive to the residual gas of a circulation upper in cylinder;
4) the uncorrelated control of independence that fuel oil sprays and mixture sprays, this is performed by fuel nozzle (5) and straight spraying nozzle (7) respectively.This feature can bring a series of benefit, comprising: the flexibility improving fuel oil mixture form, insensitive to the extreme of carbon distribution, reduce system cost etc.
Finally, not deviating from the scope of this claim, can clearly find out described by the utility model start function to be modified or change.
Claims (9)
1. an electric controlled direct spray multi fuel two-cycle engine, comprise: a crankcase comprising at least one cylinder (27), corresponding to the engine piston in cylinder interior movement between top dead center and lower dead center (26) of number of cylinders, to be supported in described crankcase with at least two bearings and to comprise the bent axle (31) of the crank corresponding to number of cylinders, corresponding to the connecting rod (28) being articulated with described engine piston (26) and described crank of number of cylinders, a crankshaft position sensor (14), corresponding to suction port and the scavenging port of number of cylinders, corresponding to the spark plug (8) of number of cylinders, an independent sump (12) and an independent fuel tank (1) being provided with fuel component sensor, a closure (16), one be arranged on closure (16) after independently oil injection nozzle (23) and provide the oil pump (17) of required pressure for described oil injection nozzle (23), it is characterized in that: also comprise an air-fuel rail (6), one be arranged on crankcase body by the air pump (13) of bent axle Direct driver, an electronically controlled fuel pump (3) being applicable to various different liquids fuel, corresponding to fuel nozzle (5) and the straight spraying nozzle (7) of number of cylinders, an ECU (11) that can gather all the sensors respectively and control different power unit, wherein, described air pump (13) provides the pressurized air of steady pressure for air-fuel rail (6) and straight spraying nozzle (7), described fuel pump (3) provides fuel oil for air-fuel rail (6), fuel oil is sprayed into air-fuel rail (6) by described fuel nozzle (5), fuel air mixture is sprayed into cylinder by described straight spraying nozzle (7).
2. motor according to claim 1, it is characterized in that: described motor is applicable to various different liquid fuel, use the mode running engine all using spark plug (8) to light a fire during different liquids fuel, and the moment that ECU (11) can light a fire to adjust straight spraying nozzle (7) time for spraying and spark plug (8) according to the fuel component sensor automatic discrimination fuel type in fuel tank (1).
3. motor according to claim 1, described liquid fuel is gasoline, diesel oil or aviation kerosine.
4. motor according to claim 1, it is characterized in that: described oil pump (17) junctor fuel tank (12) is also controlled by ECU (11), described oil pump (17) provides the machine oil of required pressure for the independent oil injection nozzle (23) after being installed on engine air throttle (16), and described oil injection nozzle (23) controls emitted dose and discharge time separately by ECU (11) equally.
5. motor according to claim 1, is characterized in that: described air pump (13), drives (24) by the eccentric driving of bent axle one end.
6. motor according to claim 1, it is characterized in that: described air-fuel rail (6), be installed on engine cylinder cover (25) top, the pressure of air and fuel oil is regulated by ECU (11) accordingly with the difference of engine operating condition.
7. motor according to claim 1, it is characterized in that: described straight spraying nozzle (7), be installed in described air-fuel rail (6), the mixture of air and fuel oil is sprayed into cylinder (27), described straight spraying nozzle (7) and fuel nozzle (5) use simultaneously, fuel oil is sprayed into air-fuel rail (6) by fuel nozzle (5), and the mixture in rail is sprayed into cylinder (27) at reasonable time by described straight spraying nozzle (7) again.
8. motor according to claim 7, it is characterized in that: described straight spraying nozzle (7) is arranged on engine cylinder cover (25), position is relative with cylinder centerline and radial perpendicular to cylinder, and spark plug (8) and described straight spraying nozzle (7) form 45 ± 10 ° of angles.
9. the motor according to above arbitrary claim, it is characterized in that: described ECU (11) carries out independent control to fuel nozzle (5), straight spraying nozzle (7) and spark plug (8), first air-fuel rail (6) is sprayed into by the fuel oil through accurate measurement via fuel nozzle (5), then control straight spraying nozzle (7) and air fuel mixture is sprayed into cylinder (27), the precise moments after air fuel mixture sprays into cylinder controls spark plug (8) and lights a fire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520343561.1U CN204877672U (en) | 2015-05-26 | 2015-05-26 | Automatically controlled many fuel two -cycle engine that directly spouts |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520343561.1U CN204877672U (en) | 2015-05-26 | 2015-05-26 | Automatically controlled many fuel two -cycle engine that directly spouts |
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| CN204877672U true CN204877672U (en) | 2015-12-16 |
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| CN201520343561.1U Expired - Fee Related CN204877672U (en) | 2015-05-26 | 2015-05-26 | Automatically controlled many fuel two -cycle engine that directly spouts |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965402A (en) * | 2017-12-21 | 2018-04-27 | 苏州百胜动力机器股份有限公司 | A kind of control fuel injection formula shipboard |
| CN110206629A (en) * | 2019-04-25 | 2019-09-06 | 清华大学 | Active precombustion-chamber ignition system and combustion system for hybrid power engine |
| CN110953106A (en) * | 2019-09-30 | 2020-04-03 | 广西擎芯动力科技有限公司 | Gas auxiliary fuel supply system and method for direct injection engine in ignition type heavy oil cylinder |
| CN113266465A (en) * | 2021-05-11 | 2021-08-17 | 苏州百胜动力机器股份有限公司 | Outboard engine power assembly with air inlet control and air entrainment injection |
-
2015
- 2015-05-26 CN CN201520343561.1U patent/CN204877672U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107965402A (en) * | 2017-12-21 | 2018-04-27 | 苏州百胜动力机器股份有限公司 | A kind of control fuel injection formula shipboard |
| CN110206629A (en) * | 2019-04-25 | 2019-09-06 | 清华大学 | Active precombustion-chamber ignition system and combustion system for hybrid power engine |
| CN110206629B (en) * | 2019-04-25 | 2020-07-14 | 清华大学 | Active pre-combustion chamber ignition system for hybrid power engine and combustion system |
| CN110953106A (en) * | 2019-09-30 | 2020-04-03 | 广西擎芯动力科技有限公司 | Gas auxiliary fuel supply system and method for direct injection engine in ignition type heavy oil cylinder |
| CN113266465A (en) * | 2021-05-11 | 2021-08-17 | 苏州百胜动力机器股份有限公司 | Outboard engine power assembly with air inlet control and air entrainment injection |
| CN113266465B (en) * | 2021-05-11 | 2022-10-18 | 苏州百胜动力机器股份有限公司 | Outboard engine power assembly with air inlet control and air entrainment injection |
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Effective date of registration: 20160623 Address after: 535000 building, 31 building, Shuguang garden, hi tech Industrial Development Zone, the Guangxi Zhuang Autonomous Region, Qinzhou, 1-3 Patentee after: Guangxi Yinyi Power Technology Co.,Ltd. Address before: 100101, 801-F22, room 8, triumph centre, 170 Beiyuan Road, Beijing, Chaoyang District Patentee before: BEIJING YINYI TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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Addressee: Guangxi Yinyi Power Technology Co.,Ltd. Document name: Notification of Passing Examination on Formalities |
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Addressee: Guangxi Yinyi Power Technology Co.,Ltd. Person in charge of patentsThe principal of patent Document name: Payment Notice |
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