CN202187851U - Scavenging air belt injection device of two-stroke kerosene engine - Google Patents
Scavenging air belt injection device of two-stroke kerosene engine Download PDFInfo
- Publication number
- CN202187851U CN202187851U CN2011202274690U CN201120227469U CN202187851U CN 202187851 U CN202187851 U CN 202187851U CN 2011202274690 U CN2011202274690 U CN 2011202274690U CN 201120227469 U CN201120227469 U CN 201120227469U CN 202187851 U CN202187851 U CN 202187851U
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- CN
- China
- Prior art keywords
- kerosene
- air belt
- scavenging air
- engine
- oil
- Prior art date
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Abstract
The utility model belongs to the field of two-stroke engine fuel injection, and particularly discloses a scavenging air belt injection device of a two-stroke kerosene engine, which includes a kerosene supply system, a scavenging air belt fuel injector and an electric control system, wherein the kerosene supply system is the fuel source of the engine; a kerosene supply pipeline of the kerosene supply system is connected with the scavenging air belt fuel injector; the scavenging air belt fuel injector is mounted on the air cylinder wall of the engine; and the electric control system controls the scavenging air belt fuel injector to directly inject the kerosene into the scavenging air belt during the scavenging process of the engine. The scavenging air belt injection device greatly shortens the distance for the kerosene from the fuel injector to the air cylinder, improves the atomizing effect of the kerosene, and improves the working performance of the kerosene engine during cold start and low load.
Description
Technical field
Scavenging air belt injection apparatus when the utility model relates to a kind of two-stroke kerosene engine burning kerosene oil plant belongs to two stroke engine fuel injection field.
Background technique
At present, the domestic finished product two stroke engine that does not also have to be directed against specially the kerosene research and development mainly is on existing two-stroke gasoline engine, to change burning kerosene to the research of two-stroke kerosene engine.Because the kinematical viscosity of kerosene is two to three times of gasoline, this just means that its flow resistance is big, causes the atomizing effect of kerosene more far short of what is expected than gasoline.The atomizing effect that improves kerosene is that petrol engine changes a key issue that will solve emphatically when burning kerosene.
For common reed valve induction formula spark ignition two stroke engine; Spray in the intake duct of fuel oil before leaf valve; And with air mixing after form inflammable mixture, inflammable mixture will successively pass through leaf valve, crankcase and scavenging air belt could finally get into cylinder combustion.In intake process, because airtight crankcase pressure is less than external atmospheric pressure, leaf valve is opened under the effect of atmospheric pressure, and inflammable mixture gets in the crankcase through leaf valve.When little load, the leaf valve aperture is very little, and the cross section that mixed gas flows through is very little, and fuel particles collides each other, can form bigger particle, thereby has reduced the atomizing effect of fuel oil.And in the cold starting process, because leaf valve and crankcase wall surface temperature are all very low, can condense after the fuel particles chance is cold, this has just further reduced the atomizing effect of fuel oil.
Therefore, along with mixed airflow is crossed the growth in path and increasing of process link, the atomization quality of fuel oil can be worse and worse.For the reasonable gasoline of atomizing effect own, this influence is not very big, so two-stroke gasoline engine can normal starting and work.Yet this influence is apparent in view for the two-stroke kerosene engine, problem such as combustion instability in the time of can causing kerosene engine cold starting difficulty and little load.
The model utility content
The defective that the utility model exists to existing technology, and a kind of two-stroke kerosene engine scavenging air belt injection apparatus that can improve fuel atomization effect is proposed.
This device comprises kerosene oil supply system, scavenging air belt oil sprayer and automatical control system; Wherein: the oil feed line of kerosene oil supply system connects the scavenging air belt oil sprayer; The scavenging air belt oil sprayer is installed on the cylinder wall of motor, and electric control system controls scavenging air belt oil sprayer is directly injected to kerosene in the scavenging air belt of cylinder wall in the motor scavenging process.
Said kerosene oil supply system is to be connected and composed through pressure regulator and filter cleaner by electric fuel punp, and the oil pressure in the oily rail of kerosene oil supply system is greater than 3bar pressure.
Said automatical control system is to be made up of ECU, TPS, crank position and speed probe, and wherein: ECU is controlled the fuel injection quantity and the oil spout moment of scavenging air belt oil sprayer through the induced signal of TPS and crank position and speed probe.
Technique effect:
1, changes two stroke engine fuel injection position into scavenging air belt by intake duct, shortened the path of fuel oil in from the oil sprayer to the cylinder, improved the atomizing effect of fuel oil.
2, strictness has been controlled oil spout constantly, guarantees that oil sprayer sprays kerosene in scavenging process, has further improved fuel atomization effect, and the service behaviour when having improved engine cold starting and little load has reduced the noxious gas emission in the cold starting process.
Description of drawings
Fig. 1 is the mounting structure schematic representation of the utility model and motor.
Label title among the figure: 1, spark plug; 2, cylinder; 3, outlet pipe; 4, crankcase; 5, bent axle; 6, scavenging air belt oil sprayer; 7, scavenging air belt; 8, leaf valve; 9, intake duct; 10, throttle body; 11, electric fuel punp; 12, pressure regulator; 13, filter cleaner; 14, ECU; 15, TPS; 16, crank position and speed probe.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
The mounting structure of the utility model and motor is as shown in Figure 1.The utility model device comprises the automatical control system of kerosene oil supply system, scavenging air belt oil sprayer 6 and control scavenging air belt oil sprayer 6.
Kerosene oil supply system and regular gasoline oil supply system are basic identical; Form by electric fuel punp 11, pressure regulator 12, filter cleaner 13 and corresponding connecting pipeline; Pressed problems such as increase when solving the big and oil spout of the kinematical viscosity of kerosene own in the scavenging air belt; Improve the jet atomization level of kerosene, need suitably to increase the pretightening force of pressure regulator 12 medi-springs, make the 3bar pressure of the oil pressure overgauge in the oily rail.At punching of the appropriate location of engine air casing wall and installation scavenging air belt oil sprayer 6, scavenging air belt oil sprayer 6 connects the oil feed line of oil supply systems, and receives electric control system controls.The automatical control system that the utility model relates to mainly is made up of ECU 14, TPS 15, crank position and speed probe 16; ECU 14 adopts singlechip technology to realize; Automatical control system is confirmed every circuit fuel injection quantity according to throttle opening and engine speed; And the oil spout of confirming each cylinder injector according to crank position constantly, finally controls each cylinder injector work.Automatical control system guarantees that scavenging air belt oil sprayer 6 sprays kerosene in the motor scavenging process.
In engine intake process, piston stroking upward, electric control system controls scavenging air belt oil sprayer 6 does not carry out oil spout, gets into the air that has only of crankcase 4 through leaf valve 8.In the descent of piston process; Air in the crankcase 4 is by precompression, and after the scavenging port on the casing wall was opened, motor got into scavenging process; This moment, ECU 14 confirmed that through crank position and speed probe 16 motor gets into scavenging process; And control scavenging air belt oil sprayer 6 sprays kerosene to scavenging air belt 7 in, the kerosene particle that ejects with in scavenging air belt 7, mixed by precompressed air, pass through scavenging port entering cylinder 2 internal combustion then rapidly.
Claims (3)
1. two-stroke kerosene engine scavenging air belt injection apparatus is characterized in that:
This device comprises kerosene oil supply system, scavenging air belt oil sprayer (6) and automatical control system; Wherein: the oil feed line of kerosene oil supply system connects scavenging air belt oil sprayer (6); Scavenging air belt oil sprayer (6) is installed on the cylinder wall of motor, and electric control system controls scavenging air belt oil sprayer (6) is directly injected to kerosene in the scavenging air belt (7) of cylinder wall in the motor scavenging process.
2. two-stroke kerosene engine scavenging air belt injection apparatus according to claim 1; It is characterized in that: said kerosene oil supply system is to be connected and composed through pressure regulator (12) and filter cleaner (13) by electric fuel punp (11), and the oil pressure in the oily rail of kerosene oil supply system is greater than 3bar pressure.
3. two-stroke kerosene engine scavenging air belt injection apparatus according to claim 1; It is characterized in that: said automatical control system is to be made up of ECU (14), TPS (15), crank position and speed probe (16), and wherein: ECU (14) is controlled the fuel injection quantity and the oil spout moment of scavenging air belt oil sprayer (6) through the induced signal of TPS (15) and crank position and speed probe (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202274690U CN202187851U (en) | 2011-06-30 | 2011-06-30 | Scavenging air belt injection device of two-stroke kerosene engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202274690U CN202187851U (en) | 2011-06-30 | 2011-06-30 | Scavenging air belt injection device of two-stroke kerosene engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202187851U true CN202187851U (en) | 2012-04-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202274690U Expired - Fee Related CN202187851U (en) | 2011-06-30 | 2011-06-30 | Scavenging air belt injection device of two-stroke kerosene engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202187851U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104583557A (en) * | 2012-08-31 | 2015-04-29 | 株式会社Ihi | Uniflow scavenging two-cycle engine |
-
2011
- 2011-06-30 CN CN2011202274690U patent/CN202187851U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104583557A (en) * | 2012-08-31 | 2015-04-29 | 株式会社Ihi | Uniflow scavenging two-cycle 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: 20120411 Termination date: 20130630 |