CN2869358Y - Engine air auxiliary fuel injection device - Google Patents
Engine air auxiliary fuel injection device Download PDFInfo
- Publication number
- CN2869358Y CN2869358Y CN 200520010561 CN200520010561U CN2869358Y CN 2869358 Y CN2869358 Y CN 2869358Y CN 200520010561 CN200520010561 CN 200520010561 CN 200520010561 U CN200520010561 U CN 200520010561U CN 2869358 Y CN2869358 Y CN 2869358Y
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- CN
- China
- Prior art keywords
- oil
- air
- pressure
- pump
- gas
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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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Abstract
The utility model relates to an air auxiliary fuel injection equipment for engine. A high-pressure oil pump and a constant pressure valve are connected on the oil path in turn from a low-pressure oil pump to an oil track. The high-pressure oil pump and the constant pressure valve are connected with the low-pressure oil pump through an oil pipe. An air pressure pump is connected on the air path from an air input-regulating valve to an air track. An air pressure sensor and the constant pressure valve are fixed on the air track; a nozzle for gas-oil mixture composed of an oil measuring nozzle and a gas-oil mixture measuring nozzle is connected with the oil track and the air track; and the low pressure oil pump, the air inlet regulating valve, the air pressure sensor, the oil measuring nozzle and the gas-oil mixture measuring nozzle are connected with an electronic controller separately. The utility model injects the mixture of high-pressure oil and high-pressure air into the engine cylinder for mixing with air so as to increase the effect of oil atomization and realize the lean burn within a broader area.
Description
Technical field
The utility model relates to the Fuel Injection field, particularly a kind of engine air auxiliary fuel injection apparatus.
Background technique
Automobile has been made indelible contribution for human civilization with progressive since 1886 come out, become indispensable means of transportation such as people's life, work, study, shopping, amusement.According to statistics, the world car recoverable amount is nearly 7.5 hundred million at present, tens a large amount of petroleum resources of annual consumption.Have data to show, automobile consumes 75.5% of China's gasoline gross production, 20% of diesel oil gross production every year approximately; Motor vehicle exhaust emission accounts for about 80% of big city pollution sources, has caused serious pollution and infringement to earth environment with to human health.For adapting to the severe current of petroleum resources worsening shortages and satisfying improving constantly of Abgasgesetz, vehicle energy saving and reduction exhaust emissions technology are maked rapid progress, and petrolic fuel injection technology develops into intake duct single-point electric-controlled injection and intake duct multiple spot electric-controlled injection by carburetor type.Present vehicle fuel electric-controlled injection technology, normally adopt electric oil pump fuel oil to be added to the low pressure of 3.5bar, under the control of electronic controller (ECU), by fuel nozzle to engine charge in front of the door, in intake duct with after the air mixing, be inhaled in the cylinder fuel injection.Though this technology than the Carburetor advanced person many, but exist fuel pressure not high, it is not thorough to atomize; Fuel oil is injected into shortcomings such as mixing before the intake valve is bad.
Summary of the invention
The purpose of this utility model provides a kind of engine air auxiliary fuel injection apparatus, it by high pressure fuel with spray in the engine cylinder again and air mixing after high-pressure air mixes, improve fuel atomization effect, realize the lean combustion of wider scope.
The purpose of this utility model is achieved in that low pressure fuel pump connects high pressure oil pump, constant pressure valve successively to the oil duct of oily rail, and high pressure oil pump, constant pressure valve are communicated with low pressure fuel pump by oil pipe; The air inlet adjustable valve is connected with air pressure pump to the air flue of gas rail, the gas rail is provided with air pressure probe, constant pressure valve; The mixed oil and gas nozzle that is made of fuel metering nozzle and mixed oil and gas measuring jet is connected in the gentle rail of oily rail, and low pressure fuel pump, air inlet adjustable valve, air pressure probe, fuel metering nozzle, mixed oil and gas measuring jet connect with electronic controller by lead respectively.
Owing to adopted such scheme, low pressure fuel pump connects high pressure oil pump, constant pressure valve successively to the oil duct of oily rail, and high pressure oil pump, constant pressure valve are communicated with low pressure fuel pump by oil pipe.Make the fuel oil in the fuel tank be sent into high pressure oil pump by low pressure fuel pump sucking-off pressurization, again by delivering to constant pressure valve after the high pressure oil pump pressurization, when fuel pressure during greater than rated pressure, then by the constant pressure valve pressure release, unnecessary fuel oil refluxes from oil pipe and sends into high pressure oil pump again, makes the fuel pressure that is transported to oily rail from constant pressure valve remain constant compression force.The air inlet adjustable valve is connected with air pressure pump to the air flue of gas rail, the gas rail is provided with air pressure probe, constant pressure valve; Air inlet adjustable valve, air pressure probe connect with electronic controller (ECU) by lead respectively.After making air enter air input modulating valve from empty filter, formed high-pressure air by the air pressure pump pressurization and send into the gas rail, when air pressure probe detects air pressure and is higher than rated pressure, the information that monitors is passed to electronic controller, electronic controller output electrical signal is closed air input modulating valve, reduces the air inlet amount; The air that surpasses specified air pressure is made the air pressure in the gas rail remain constant compression force by the constant pressure valve pressure release simultaneously.The mixed oil and gas nozzle that is made of fuel metering nozzle and mixed oil and gas measuring jet is connected in the gentle rail of oily rail, and fuel metering nozzle, mixed oil and gas measuring jet connect with electronic controller by lead respectively.The mixed oil and gas nozzle make the fuel oil that enters from oily rail and from the air that the gas rail enters the mixed oil and gas nozzle, mix form atomizing after, be directly injected to again in the engine cylinder firing chamber and mix the better spray pattern of formation once more, realize the lean combustion of wider scope with the air that enters from the cylinder intake duct.The spray miscella tolerance of the fuel injection quantity of fuel metering nozzle and mixed oil and gas measuring jet is by electronic controller controls.
The utility model is simple in structure, can improve fuel atomization effect and fuel economy, makes engine power improve 5%～10%, and fuel consumption rate reduces by 5%～15%, and the discharge of poisonous waste amount reduces about 20% in the waste gas.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
In the accompanying drawing, 1 is the fuel metering nozzle, and 2 is the mixed oil and gas measuring jet, and 3 is bolt, 4 is oily rail, and 5 is constant pressure valve, and 6 is the gas rail, and 7 is the spring clip, 8 is air pressure probe, and 9 is flexible pipe, and 10 is the air inlet adjustable valve, and 11 is flexible pipe, 12 is air pressure pump, and 13 is constant pressure valve, and 14 is high pressure oil pump, 15 is fuel tank, and 16 is low pressure fuel pump, and 17 is lead, 18 is electronic controller, and 19 is resilient clip, and 20 is oil pipe.
Embodiment
Referring to accompanying drawing, low pressure fuel pump 16 is screwed and is installed on the fuel tank 15.Low pressure fuel pump 16 connects high pressure oil pump 14, constant pressure valve 13 successively to the oil duct of oily rail 4, high pressure oil pump 14, constant pressure valve 13 are communicated with low pressure fuel pump 16 by oil pipe 20, high pressure oil pump 14 is communicated with constant pressure valve 13 by oil pipe, constant pressure valve 13 is communicated with oily rail 4 by high pressure hose 9, its connection part spring clip 7 bandings.Oil pipe 20 is a three-way pipe, and the one end connects low pressure fuel pump 16, and the other end connects high pressure oil pump 14, and another end connects constant pressure valve 13.Air inlet adjustable valve 10 is used for being communicated with air-strainer (not shown), air inlet adjustable valve 10 is connected with air pressure pump 12 to the air flue of gas rail 6, air inlet adjustable valve 10 is communicated with air pressure pump 12 by tracheae, air pressure pump 12 is driven by the belt pulley of bent axle, air pressure pump 12 is communicated with gas rail 6 by high pressure hose 11, its connection part spring clip banding.Gas rail 6 is provided with air pressure probe 8, constant pressure valve 5, and air pressure probe 8, constant pressure valve 5 are threaded in respectively on the gas rail 6.Four mixed oil and gas nozzles that are made of fuel metering nozzle 1 and mixed oil and gas measuring jet 2 are connected in oily rail 4 gentle rails 6, and the quantity of mixed oil and gas nozzle is determined by the quantity of cylinder.The oil inlet end of the fuel metering nozzle 1 of each mixed oil and gas nozzle is assemblied on the oily rail 4 in the mounting hole that is provided with oil duct communicates, and the oil spout end is assemblied on the gas rail 6 in that be provided with and the mounting hole that air flue communicates, and uses the seal with elastometic washer of " O " type respectively; The inlet end of the mixed oil and gas measuring jet 2 of each mixed oil and gas nozzle is assemblied on the gas rail 6 in the mounting hole that is provided with air flue communicates, and with the seal with elastometic washer of " O " type, adopts resilient clip 19 to fix, and prevents from axially to withdraw from; Oil rail 4 is strained by bolt 3 through welding support and gas rail 6 thereon, fuel metering nozzle 1 and mixed oil and gas measuring jet 2 are combined tightly constitute the mixed oil and gas nozzle, the oil spout end of fuel metering nozzle 1 is communicated with the inlet end of mixed oil and gas measuring jet 2, and the intake duct of mixed oil and gas measuring jet 2 communicates with the air flue of gas rail 6.The nozzle end of mixed oil and gas measuring jet 2 is in order to being assemblied in the mounting hole on the cylinder cap (not shown), and with the seal with elastometic washer of " O " type, shower nozzle is arranged in the intake duct of cylinder, can directly spray in the firing chamber after making the atomizing of fuel oil and air height.Low pressure fuel pump 16, air inlet adjustable valve 10, air pressure probe 8, fuel metering nozzle 1, mixed oil and gas measuring jet 2 connect with electronic controller 18 by lead 17 respectively.
During the utility model work, fuel oil is forced into 3.5bar by low pressure fuel pump sucking-off from fuel tank, the high pressure that is forced into 8bar by high pressure oil pump is delivered to constant pressure valve again, when fuel pressure during greater than 8bar, then by the constant pressure valve pressure release, unnecessary fuel oil refluxes from oil pipe and delivers to high pressure oil pump again, makes fuel pressure remain at the constant pressure of 8bar.High pressure fuel enters the fuel metering nozzle of mixed oil and gas nozzle through high pressure hose, oily rail, by the fuel injection quantity of electronic controller controls fuel metering nozzle, in fuel oil spirt mixed oil and gas measuring jet.Simultaneously, part air through air-strainer enters air pressure pump from air input modulating valve, be transported to the gas rail after being pressurized to the high pressure of 6.5bar, in case air pressure probe detects air pressure when being higher than 6.5bar, close air input modulating valve by electronic controller output electrical signal, reduce the air inlet amount, and control constant pressure valve pressure release, make air in the gas rail remain at the constant pressure of 6.5bar.High-pressure air enters the mixed oil and gas measuring jet of mixed oil and gas nozzle from the gas rail, mix the formation spray pattern with the oil that sprays into from the fuel metering nozzle, pass through the spray miscella tolerance of electronic controller controls mixed oil and gas measuring jet again, the mixed oil and gas of atomizing is ejected into and directly sprays in the firing chamber, mix the better spray pattern of formation once more with the air that enters from the cylinder intake duct, realize the lean combustion of wider scope.
Claims (4)
1. engine air auxiliary fuel injection apparatus, comprise low pressure fuel pump (16), oil rail (4), electronic controller (ECU), it is characterized in that: low pressure fuel pump (16) connects high pressure oil pump (14), constant pressure valve (13) successively to the oil duct of oily rail (4), and high pressure oil pump (14), constant pressure valve (13) are communicated with low pressure fuel pump (16) by oil pipe (20); Air inlet adjustable valve (10) is connected with air pressure pump (12) to the air flue of gas rail (6), gas rail (6) is provided with air pressure probe (8), constant pressure valve (5); The mixed oil and gas nozzle that is made of fuel metering nozzle (1) and mixed oil and gas measuring jet (2) is connected in the gentle rail of oily rail (4) (6), and low pressure fuel pump (16), air inlet adjustable valve (10), air pressure probe (8), fuel metering nozzle (1), mixed oil and gas measuring jet (2) connect with electronic controller (18) by lead (17) respectively.
2. engine air auxiliary fuel injection apparatus according to claim 1 is characterized in that: oil pipe (20) is a three-way pipe, and the one end connects low pressure fuel pump (16), and the other end connects high pressure oil pump (14), and another end connects constant pressure valve (13).
3. engine air auxiliary fuel injection apparatus according to claim 1 is characterized in that: constant pressure valve (13) connects oily rail (4) by high pressure hose (9).
4. engine air auxiliary fuel injection apparatus according to claim 1 is characterized in that: air pressure pump (12) connects gas rail (6) by flexible pipe (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520010561 CN2869358Y (en) | 2005-12-20 | 2005-12-20 | Engine air auxiliary fuel injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520010561 CN2869358Y (en) | 2005-12-20 | 2005-12-20 | Engine air auxiliary fuel injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2869358Y true CN2869358Y (en) | 2007-02-14 |
Family
ID=37724293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520010561 Expired - Fee Related CN2869358Y (en) | 2005-12-20 | 2005-12-20 | Engine air auxiliary fuel injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2869358Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635474A (en) * | 2012-05-03 | 2012-08-15 | 张玉金 | Compressed fuel and compressed air mixed injection system of diesel engine |
| CN110848066A (en) * | 2019-09-30 | 2020-02-28 | 广西擎芯动力科技有限公司 | Ignition type two-stroke heavy oil piston engine |
| CN114198233A (en) * | 2021-12-16 | 2022-03-18 | 北京理工大学 | Integrated vertically-arranged compact air-assisted injection system structure |
-
2005
- 2005-12-20 CN CN 200520010561 patent/CN2869358Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635474A (en) * | 2012-05-03 | 2012-08-15 | 张玉金 | Compressed fuel and compressed air mixed injection system of diesel engine |
| CN110848066A (en) * | 2019-09-30 | 2020-02-28 | 广西擎芯动力科技有限公司 | Ignition type two-stroke heavy oil piston engine |
| CN114198233A (en) * | 2021-12-16 | 2022-03-18 | 北京理工大学 | Integrated vertically-arranged compact air-assisted injection system structure |
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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: 20070214 Termination date: 20111220 |