CN113482820A - Dual-fuel oil injector with variable injection angle and control method thereof - Google Patents
Dual-fuel oil injector with variable injection angle and control method thereof Download PDFInfo
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- CN113482820A CN113482820A CN202110811177.XA CN202110811177A CN113482820A CN 113482820 A CN113482820 A CN 113482820A CN 202110811177 A CN202110811177 A CN 202110811177A CN 113482820 A CN113482820 A CN 113482820A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
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- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a dual-fuel oil sprayer with a variable spraying angle, which relates to the technical field of fuel oil spraying of engines and comprises an oil sprayer shell and an oil spraying angle adjusting device; the oil injection angle adjusting device comprises an oil chamber separating sheet and a main oil way needle valve; a main oil way and an auxiliary oil way are formed in the oil sprayer shell; a main oil way needle valve and an auxiliary oil way needle valve are respectively arranged in the main oil way and the auxiliary oil way; the auxiliary oil way needle valve moves up and down under the control of the auxiliary oil way electromagnetic valve so as to realize the closing or the conduction of an upper oil chamber oil way, and the upper oil chamber oil way leads oil into an upper oil chamber; the main oil way needle valve moves up and down under the control of the main oil way electromagnetic valve so as to realize that oil enters the lower oil chamber; an oil chamber is arranged below the main oil way, and the oil chamber is divided into an upper oil chamber and a lower oil chamber through an oil chamber separating sheet. The aim that two different types of fuel can be injected in an engine cylinder simultaneously and the injection angle can be changed in the injection process can be achieved.
Description
Technical Field
The invention relates to the technical field of fuel injection of engines, in particular to a fuel injector with a variable injection angle, which is suitable for a dual-fuel engine.
Background
From the steam engine era to the electric power era, energy plays a crucial role in civilization progress. With the continuous improvement of the technological level, the demand of human beings on various energy sources is increased sharply, and meanwhile, the energy sources of the earth are less and less due to the transitional exploitation of the energy sources. At present, the petroleum resources of China are mainly imported from the outside, and more than 60% of the petroleum resources are consumed by internal combustion engines. Therefore, the country wants to alleviate the problem of oil shortage in China by developing a method of replacing fuel automobiles. Many alternative fuels such as natural gas, methanol, dimethyl ether, polyoxymethylene dimethyl ether (PODE), biomass fuel, etc. are widely used in automobile engines. However, since international emission regulations become more and more strict, a single alternative fuel cannot meet the requirements of power performance and emission performance of an engine at the same time, and the performance of various aspects of the engine can be improved by using dual-fuel combustion on the engine, the research on the dual-fuel engine has a profound significance.
At present, the oil injector generally adopted on the internal combustion engine can only inject one fuel, and only one oil injector mounting hole is arranged on a single cylinder of the engine, so that few engines can be provided with two oil injectors. If two different fuel injections are realized, secondary machining and punching are needed to be carried out on the engine cylinder block, but the machining technology is high in requirement, difficult to realize, and the cylinder structure of the engine is easy to damage.
The injection angle of the injector also plays a crucial role in the combustion event in the engine cylinder during the engine combustion process. In the traditional engine, the injection angle of the oil injector after being installed on an engine cylinder is fixed, and the ECU cannot adjust the injection angle, so that the power performance and the emission performance of the engine cannot be improved by changing the injection angle of the oil injector.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a dual-fuel injector with a variable injection angle, which can realize the purposes of simultaneously injecting two different types of fuels in an engine cylinder and changing the injection angle in the injection process.
The present invention achieves the above-described object by the following technical means.
A dual-fuel injector with a variable injection angle comprises an injector shell and an injection angle adjusting device; the oil injection angle adjusting device comprises an oil chamber separating sheet and a main oil way needle valve; a main oil way and an auxiliary oil way are formed in the oil sprayer shell; a main oil way needle valve and an auxiliary oil way needle valve are respectively arranged in the main oil way and the auxiliary oil way; the auxiliary oil way needle valve moves up and down under the control of the auxiliary oil way electromagnetic valve so as to realize the closing or the conduction of an upper oil chamber oil way, and the upper oil chamber oil way leads oil into an upper oil chamber; the main oil way needle valve moves up and down under the control of the main oil way electromagnetic valve so as to realize that oil enters the lower oil chamber; an oil chamber is arranged below the main oil way, and the oil chamber is divided into an upper oil chamber and a lower oil chamber through an oil chamber separating sheet.
Furthermore, the oil injection angle adjusting device also comprises a straight rod, a connecting rod and an injection angle adjusting electromagnetic valve; one end of the straight rod is connected with the injection angle adjusting electromagnetic valve, and the other end of the straight rod is connected with one end of the connecting rod through a steering knuckle; the other end of the connecting rod is connected with an oil injection steering ball; the oil injection steering ball is internally provided with an auxiliary fuel spray hole, and the injection angle adjusting electromagnetic valve drives the straight rod to move up and down so that the connecting rod drives the oil injection steering ball to rotate, thereby adjusting the angle of oil sprayed from the auxiliary fuel spray hole.
Furthermore, an oil inlet groove, an oil outlet groove and a main fuel spray hole are formed in the oil chamber separation sheet, a connecting rod and an oil injection steering ball are arranged in the oil inlet groove, and the oil outlet groove is communicated with the main fuel spray hole.
Furthermore, the number of the connecting rods is two, and the connecting rods are connected through connecting rod springs.
Furthermore, a first sealing taper hole is formed in the oil chamber separation sheet; the lower end of the main oil way needle valve is attached to the first sealing taper hole.
Furthermore, the lower end of the needle valve of the auxiliary oil way is attached to the second sealing taper hole.
Furthermore, the number of the oil inlet grooves is four, and the oil inlet grooves are symmetrically distributed; the main fuel jet holes are four and symmetrically distributed.
The control method of the dual-fuel oil injector with the variable injection angle comprises a single-fuel injection mode and a dual-fuel injection mode;
the ECU detects the rotating speed and torque signals of the engine to judge the load of the engine, and the oil injector adopts a single fuel injection mode under the working condition of small load and adopts a dual fuel injection mode under the working condition of medium and large load;
single fuel injection mode:
the ECU controls a main oil way switch to be opened after detecting an oil injection time signal, and fuel oil in the main oil way enters the main oil way; at the moment, the inside of the main oil way is filled with high-pressure fuel oil, a main oil way electromagnetic valve controls a main oil way needle valve to move upwards, a gap is formed between the main oil way needle valve and a first sealing taper hole, the high-pressure fuel oil in the main oil way enters a lower oil chamber through the first sealing taper hole, the high-pressure fuel oil is filled in the lower oil chamber and then enters an oil outlet groove, and finally the high-pressure fuel oil is sprayed into the cylinder through a main fuel spray hole;
dual fuel injection mode:
after detecting an oil injection time signal, the ECU controls a main oil way switch and an auxiliary oil way switch to be simultaneously opened, and fuel oil in a main oil way and fuel oil in an auxiliary oil way respectively enter a main oil way and an auxiliary oil way; at the moment, the interior of the oil way is filled with high-pressure fuel oil, the main oil way electromagnetic valve controls the main oil way needle valve to move upwards, a gap is formed between the main oil way needle valve and the first sealing taper hole, the high-pressure fuel oil in the main oil way enters the lower oil chamber through the first sealing taper hole, the high-pressure fuel oil is filled in the lower oil chamber and then enters the oil outlet groove, and finally the high-pressure fuel oil is sprayed into the cylinder through the main fuel spray hole; the main oil way electromagnetic valve controls the needle valve of the main oil way to move upwards, the auxiliary oil way electromagnetic valve controls the needle valve of the auxiliary oil way to move upwards, the fuel oil of the auxiliary oil way reaches the upper oil chamber through the second sealing taper hole via the oil way of the upper oil chamber, and the fuel oil in the upper oil chamber enters the oil injection steering ball through the oil inlet groove; the ECU judges whether the injection angle is changed or not according to the working condition of the engine, and if the injection angle is not changed, the fuel oil of the auxiliary oil way is directly injected into the cylinder through the auxiliary fuel injection hole; if the injection angle is changed, the fuel oil in the auxiliary oil way is finally injected into the cylinder through the auxiliary fuel injection hole after the injection steering ball finishes the injection angle adjustment.
The invention has the beneficial effects that:
1. the invention has simple and reasonable structure, can realize the simultaneous injection of two different fuels in the cylinder under the condition of not changing the original structure of the engine, and compared with the traditional method for realizing the dual-fuel injection by combining the air inlet injection with the in-cylinder injection, the method avoids the phenomenon that the oil film of the air inlet of the engine is attached to the wall, and greatly improves the transient power responsiveness of the engine.
2. The invention can also realize the fuel distribution of the fuel in different areas in the cylinder by changing different injection angles, improve the combustion process in the cylinder and achieve the aim of reducing the emission.
Drawings
FIG. 1 is a schematic diagram of a variable spray angle dual fuel injector assembly in accordance with the present invention;
FIG. 2 is an enlarged schematic view of the spray angle adjustment apparatus of FIG. 1;
FIG. 3 is an enlarged partial schematic view of FIG. 2 at A;
FIG. 4 is a three-dimensional schematic view of the nozzle location configuration of the present invention;
fig. 5 is a schematic structural view of the lower end surface of the oil chamber separating sheet related to fig. 1 of the present invention;
fig. 6 is a schematic structural view of an upper end surface of the oil chamber separation sheet related to fig. 1 of the present invention;
fig. 7 is a flowchart illustrating a fuel injection control method according to the present invention.
Reference numerals:
1-main oil path switch, 2-auxiliary oil path switch, 3-main oil path, 4-auxiliary oil path, 5-auxiliary oil path electromagnetic valve, 6-auxiliary oil path needle valve, 7-main oil path needle valve body, 8-injection angle adjusting device, 9-auxiliary oil path needle valve body, 10-oil injector shell, 11-main oil path electromagnetic valve, 12-ECU, 13-second sealing taper hole, 14-upper oil chamber oil path, 15-oil outlet groove, 16-main fuel spray hole, 17-oil inlet groove, 18-auxiliary fuel spray hole, 8-1-upper oil chamber, 8-2-oil injection steering ball, 8-3-main oil path needle valve, 8-4-first sealing taper hole, 8-5-lower oil chamber, 8-6-oil chamber separating sheet, 8-7-an injection angle adjusting electromagnetic valve, 8-8-a main fuel spray hole, 8-1-1-a straight rod, 8-1-2-a steering knuckle, 8-1-3-a connecting rod spring, 8-1-4-a connecting rod and 8-1-5-an arc conical surface.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, the dual-fuel injector with variable injection angle comprises an injector shell 10, an injection assembly and an injection angle adjusting device 8, wherein the injection assembly comprises a main oil path switch 1, a main oil path 3, an auxiliary oil path switch 2 and an auxiliary oil path 4; the auxiliary oil way 4 is arranged on the left side of the main oil way 3, and the two groups of fuel oil ways are not interfered with each other;
the main oil way 3 and the auxiliary oil way 4 in the oil sprayer body are respectively provided with a main oil way needle valve 8-3 and an auxiliary oil way needle valve 6, the top end of the main oil way needle valve 8-3 is connected with a main oil way electromagnetic valve 11, the top end of the auxiliary oil way needle valve 6 is connected with an auxiliary oil way electromagnetic valve 5, the main oil way needle valve 8-3 is controlled by the main oil way electromagnetic valve 11, the auxiliary oil way needle valve 6 is controlled by the auxiliary oil way electromagnetic valve 5, and the auxiliary oil way needle valve 6 and the main oil way needle valve 8-3 can move up and down in respective needle valve bodies. The main oil way needle valve 8-3 is contacted with the first sealing taper hole 8-4, and the bottom of the main oil way needle valve is communicated with the lower oil chamber 8-5; the auxiliary oil path needle valve 6 is in contact with the second sealing taper hole 13, the bottom of the auxiliary oil path needle valve is connected with an upper oil chamber oil path 14, and the upper oil chamber oil path 14 is communicated with the upper oil chamber 8-1.
The upper oil chamber 8-1 and the lower oil chamber 8-5 are separated by an oil chamber separating sheet 8-6, and the upper position and the lower position are mutually independent and do not influence each other. After detecting the injection angle signal of the engine, the ECU 12 of the injector calculates the rising height of the injection angle adjusting electromagnetic valve 8-7 according to the relation between the injection angle and the position of the injection angle adjusting electromagnetic valve 8-7.
Referring to the schematic diagram of fig. 2, the injection angle adjusting device 8 comprises an injection angle adjusting solenoid valve 8-7, a straight rod 8-1-1, a steering knuckle 8-1-2, a connecting rod spring 8-1-3, a connecting rod 8-1-4 and an oil injection steering ball 8-2. The connecting rod 8-1-4 is fixedly connected with an oil injection steering ball 8-2, the straight rod 8-1-1 is fixedly connected with the lower end face of an injection angle adjusting electromagnetic valve 8-7, the straight rod 8-1-1 is connected with the connecting rod 8-1-4 through a steering knuckle 8-1-2, the injection angle adjusting electromagnetic valve 8-7 controls the straight rod 8-1-1 to move up and down in the upper oil chamber 8-1, the angle between the straight rod 8-1-1 and the connecting rod 8-1-4 is changed along with the change of the position of the injection angle adjusting electromagnetic valve 8-7, and then the included angle between the connecting rod 8-1-4 and the axis of the oil injector is changed. The connecting rod 8-1-4 is fixedly connected with the oil injection steering ball 8-2, when the included angle between the oil injection steering ball 8-2 and the axis of the oil injector is changed, the auxiliary fuel spray hole 18 is positioned in the oil injection steering ball 8-2, and finally the change of the auxiliary fuel spray angle is realized. After the oil injection process is finished, the injection angle adjusting solenoid valves 8-7 keep the positions unchanged and wait for the oil injection angle signal of the next cycle of the engine.
Referring to fig. 7, the flow diagram of the fuel injection control method of the present invention is shown, the ECU 12 detects the rotation speed and torque signal of the engine to determine the load of the engine, the fuel injector adopts a single fuel injection mode under a low-load condition, the ECU 12 controls the opening of the main oil path switch 1 after detecting the fuel injection time signal, and the fuel in the main oil path enters the main oil path 3. At the moment, the inside of the main oil way is filled with high-pressure fuel oil, the main oil way electromagnetic valve 11 controls the main oil way needle valve 8-3 to move upwards, a gap is formed between the main oil way needle valve 8-3 and the oil chamber separation sheet 8-6, the high-pressure fuel oil in the main oil way enters the lower oil chamber 8-5 through the gap between the first sealing conical surfaces 8-6, the high-pressure fuel oil is filled in the lower oil chamber 8-5 and then enters the oil outlet groove 15, and finally the high-pressure fuel oil is sprayed into the cylinder through the main fuel spray hole 16.
Under the working condition of medium and large loads, the oil injector adopts a dual-fuel mode, the ECU 12 detects an oil injection time signal and then controls the main oil way switch 1 and the auxiliary oil way switch 2 to be simultaneously opened, and the fuel oil of the main oil way and the fuel oil of the auxiliary oil way respectively enter the main oil way 3 and the auxiliary oil way 4. At the moment, the interior of the oil way is filled with high-pressure fuel oil, the main oil way electromagnetic valve 11 controls the main oil way needle valve 8-3 to move upwards, a gap is formed between the main oil way needle valve 8-3 and the oil chamber separation sheet 8-6, the high-pressure fuel oil in the main oil way enters the lower oil chamber 8-5 through the gap between the first sealing conical surfaces 8-6, the high-pressure fuel oil is filled in the lower oil chamber 8-5 and then enters the oil outlet groove 15, and finally the high-pressure fuel oil is sprayed into the cylinder through the main fuel spray hole 16. The main oil way electromagnetic valve 11 controls the main oil way needle valve 8-3 to move upwards, the auxiliary oil way electromagnetic valve 5 controls the auxiliary oil way needle valve 6 to move upwards, the auxiliary oil way fuel oil reaches the upper oil chamber 8-1 through the second sealing conical surface 13 through the upper oil chamber oil way 14, and the fuel oil in the upper oil chamber enters the oil injection steering ball 8-2 through the oil inlet groove 17. The ECU judges whether to change the injection angle according to the working condition of the engine, if not, the fuel oil of the auxiliary oil way is directly injected into the cylinder through the auxiliary fuel injection hole 18; if the injection angle is changed, the fuel oil in the auxiliary oil way is finally injected into the cylinder through the auxiliary fuel spray hole 18 after the injection angle adjusting device 8 finishes adjusting the injection angle.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (8)
1. A dual-fuel injector with a variable injection angle is characterized by comprising an injector shell (10) and an injection angle adjusting device (8); the oil injection angle adjusting device (8) comprises an oil chamber separating sheet (8-6) and a main oil way needle valve (8-3); a main oil way (3) and an auxiliary oil way (4) are formed in the oil sprayer shell (10); a main oil way needle valve (8-3) and an auxiliary oil way needle valve (6) are respectively arranged in the main oil way (3) and the auxiliary oil way (4); the auxiliary oil way needle valve (6) moves up and down under the control of the auxiliary oil way electromagnetic valve (5) so as to close or conduct an upper oil chamber oil way (14), and the upper oil chamber oil way (14) leads oil into an upper oil chamber (8-1); the main oil way needle valve (8-3) moves up and down under the control of a main oil way electromagnetic valve (11) so as to realize that oil enters a lower oil chamber (8-5); an oil chamber is arranged below the main oil way (3), and is divided into an upper oil chamber (8-1) and a lower oil chamber (8-5) through an oil chamber separating sheet (8-6).
2. The dual fuel injector with variable injection angle according to claim 1, characterized in that the injection angle adjusting device (8) further comprises a straight rod (8-1-1), a connecting rod (8-1-4) and an injection angle adjusting solenoid valve (8-7); one end of the straight rod (8-1-1) is connected with the injection angle adjusting electromagnetic valve (8-7), and the other end of the straight rod is connected with one end of the connecting rod (8-1-4) through a steering knuckle (8-1-2); the other end of the connecting rod (8-1-4) is connected with an oil injection steering ball (8-2); an auxiliary fuel spray hole (18) is formed in the oil injection steering ball (8-2), the injection angle adjusting electromagnetic valve (8-7) drives the straight rod (8-1-1) to move up and down, so that the connecting rod (8-1-4) drives the oil injection steering ball (8-2) to rotate, and the angle of oil sprayed from the auxiliary fuel spray hole (18) is adjusted.
3. The dual fuel injector with the variable injection angle according to claim 2, characterized in that the oil chamber separation sheet (8-6) is provided with an oil inlet groove (17), an oil outlet groove (15) and a main fuel spray hole (16), the oil inlet groove (17) is internally provided with a connecting rod (8-1-4) and an injection steering ball (8-2), and the oil outlet groove (15) is communicated with the main fuel spray hole (16).
4. The dual fuel injector with variable injection angle according to claim 2 is characterized in that there are two connecting rods (8-1-4), and the connecting rods (8-1-4) are connected with each other through connecting rod springs (8-1-3).
5. The dual fuel injector with the variable injection angle according to claim 1, characterized in that the oil chamber separating sheet (8-6) is provided with a first sealing taper hole (8-4); the lower end of the main oil way needle valve (8-3) is attached to the first sealing taper hole (8-4).
6. The dual fuel injector with variable injection angle according to claim 1 is characterized in that the lower end of the secondary fuel path needle valve (6) is attached to the second sealing taper hole (13).
7. The dual fuel injector with variable injection angle according to claim 3, characterized in that the oil feed grooves (17) are four and symmetrically distributed; the main fuel jet holes (16) are four and symmetrically distributed.
8. The control method for a variable injection angle dual fuel injector as claimed in claim 1, characterized by comprising a single fuel injection mode and a dual fuel injection mode;
the ECU (12) detects the rotating speed and torque signals of the engine to judge the load of the engine, and the oil injector adopts a single fuel injection mode under a small-load working condition and adopts a dual fuel injection mode under a medium-large load working condition;
single fuel injection mode:
the ECU (12) controls the main oil way switch (1) to be opened after detecting an oil injection time signal, and the fuel oil of the main oil way enters the main oil way (3); at the moment, the main oil way (3) is filled with high-pressure fuel oil, a main oil way electromagnetic valve (11) controls a main oil way needle valve (8-3) to move upwards, a gap is formed between the main oil way needle valve (8-3) and a first sealing taper hole (8-6), the high-pressure fuel oil in the main oil way (3) enters a lower oil chamber (8-5) through the first sealing taper hole (8-6), the high-pressure fuel oil is filled in the lower oil chamber (8-5), enters an oil outlet groove (15), and is finally sprayed into the cylinder through a main fuel spray hole (16);
dual fuel injection mode:
after detecting an oil injection time signal, the ECU (12) controls a main oil way switch (1) and an auxiliary oil way switch (2) to be simultaneously opened, and fuel oil in a main oil way and fuel oil in an auxiliary oil way respectively enter a main oil way (3) and an auxiliary oil way (4); at the moment, high-pressure fuel oil is filled in the oil way, the main oil way electromagnetic valve (11) controls the main oil way needle valve (8-3) to move upwards, a gap is formed between the main oil way needle valve (8-3) and the first sealing taper hole (8-6), the high-pressure fuel oil in the main oil way enters the lower oil chamber (8-5) through the first sealing taper hole (8-6), the high-pressure fuel oil is filled in the lower oil chamber (8-5), enters the oil outlet groove (15), and is finally sprayed into the cylinder through the main fuel spray hole (16); the main oil way electromagnetic valve (11) controls the main oil way needle valve (8-3) to move upwards, the auxiliary oil way electromagnetic valve (5) controls the auxiliary oil way needle valve (6) to move upwards, the auxiliary oil way fuel oil reaches an upper oil chamber (8-1) through a second sealing taper hole (13) through an upper oil chamber oil way (14), and the fuel oil in the upper oil chamber (8-1) enters an oil injection steering ball (8-2) through an oil inlet groove (17); the ECU (12) judges whether to change the injection angle according to the working condition of the engine, if not, the fuel oil of the auxiliary oil way is directly injected into the cylinder through an auxiliary fuel injection hole (18); if the injection angle is changed, the fuel oil in the auxiliary oil way is finally injected into the cylinder through the auxiliary fuel injection hole (18) after the injection steering ball (8-2) finishes the injection angle adjustment.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114352452A (en) * | 2022-02-18 | 2022-04-15 | 吉林大学 | Pressure-controlled double-path oil sprayer with safety protection function |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007285204A (en) * | 2006-04-17 | 2007-11-01 | Toyota Motor Corp | Internal combustion engine |
| US20130213358A1 (en) * | 2010-10-15 | 2013-08-22 | Deyang Hou | Fuel injector capable of dual fuel injection |
| CN103967671A (en) * | 2014-05-22 | 2014-08-06 | 中国北方发动机研究所(天津) | Dual-valve orifice-area-variable fuel nozzle |
| CN104675592A (en) * | 2015-02-13 | 2015-06-03 | 江苏大学 | Natural gas/diesel dual-fuel ejector with self-lubricating function |
| CN106762276A (en) * | 2017-01-05 | 2017-05-31 | 江苏大学 | A kind of new dual fuel injector of cavitation prevention and common rail fuel system |
| CN107152360A (en) * | 2017-07-03 | 2017-09-12 | 东莞市盈森汽车电喷科技有限公司 | High-performance fuel injector |
| CN107165755A (en) * | 2017-07-03 | 2017-09-15 | 浙江凯利智控科技有限公司 | Fuel injector atomization characteristics can adjust cone structure |
| CN108060999A (en) * | 2016-11-08 | 2018-05-22 | 福特环球技术公司 | Fuel injector with variable-flow direction |
| CN111577497A (en) * | 2020-05-09 | 2020-08-25 | 上海工程技术大学 | Dual-fuel injector |
-
2021
- 2021-07-19 CN CN202110811177.XA patent/CN113482820B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007285204A (en) * | 2006-04-17 | 2007-11-01 | Toyota Motor Corp | Internal combustion engine |
| US20130213358A1 (en) * | 2010-10-15 | 2013-08-22 | Deyang Hou | Fuel injector capable of dual fuel injection |
| CN103967671A (en) * | 2014-05-22 | 2014-08-06 | 中国北方发动机研究所(天津) | Dual-valve orifice-area-variable fuel nozzle |
| CN104675592A (en) * | 2015-02-13 | 2015-06-03 | 江苏大学 | Natural gas/diesel dual-fuel ejector with self-lubricating function |
| CN108060999A (en) * | 2016-11-08 | 2018-05-22 | 福特环球技术公司 | Fuel injector with variable-flow direction |
| CN106762276A (en) * | 2017-01-05 | 2017-05-31 | 江苏大学 | A kind of new dual fuel injector of cavitation prevention and common rail fuel system |
| CN107152360A (en) * | 2017-07-03 | 2017-09-12 | 东莞市盈森汽车电喷科技有限公司 | High-performance fuel injector |
| CN107165755A (en) * | 2017-07-03 | 2017-09-15 | 浙江凯利智控科技有限公司 | Fuel injector atomization characteristics can adjust cone structure |
| CN111577497A (en) * | 2020-05-09 | 2020-08-25 | 上海工程技术大学 | Dual-fuel injector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352452A (en) * | 2022-02-18 | 2022-04-15 | 吉林大学 | Pressure-controlled double-path oil sprayer with safety protection function |
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