CN107725240B - A kind of fuel injector of internal pressurization - Google Patents
A kind of fuel injector of internal pressurization Download PDFInfo
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- CN107725240B CN107725240B CN201711162374.3A CN201711162374A CN107725240B CN 107725240 B CN107725240 B CN 107725240B CN 201711162374 A CN201711162374 A CN 201711162374A CN 107725240 B CN107725240 B CN 107725240B
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- Prior art keywords
- inlet pipe
- oil inlet
- oil
- piston
- check valve
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Classifications
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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
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
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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
- F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
- F02M53/02—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means with fuel-heating means, e.g. for vaporising
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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
- 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
-
- 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
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a kind of fuel injectors of internal pressurization, belong to automobile fuel injector field, including being set to the intracorporal oil inlet pipe one of fuel injector master, two piston pressurization chamber of oil inlet pipe, connection oil duct one and connection oil duct two, the oil inlet end of oil inlet pipe one and oil inlet pipe two is respectively equipped with check valve one and check valve two, piston pressurization chamber is set on oil inlet pipe one, the piston pressurization is intracavitary to be equipped with " ten " font piston, and reset spring is equipped between piston lower surface and piston pressurization bottom of chamber portion；Lower oil cavitie is connected to by connecting oil duct one with oil inlet pipe two, and the oil inlet pipe one below piston is connected to by connecting oil duct two with oil inlet pipe two, and oil inlet pipe one and two lower part of oil inlet pipe are respectively equipped with check valve three and check valve four；Oil inlet pipe one is equipped with electrical heating elements one on the part between check valve one and piston pressurization chamber, oil inlet pipe one is equipped with electrical heating elements two on the part below check valve three.Stronger pressure effect has can be achieved in the present invention；Structure itself facilitates easily-controllable；Using energy source is preferable.
Description
Technical field
The present invention relates to automobile fuel injector fields, are specifically related to a kind of fuel injector of internal pressurization.
Background technique
Fuel injector is a kind of very high accurate device of machining accuracy, it is desirable that its dynamic flow range is big, anti-clogging and anti-
Pollution capacity is strong and atomization is good.Fuel injector receives the fuel injection pulse signal that ECU is sent, and is accurately controlled fuel oil injection
Amount.Fuel injector is divided into open type and two kinds of enclosed.Open fuel injector structure is simple, but atomization badness, is seldom used, enclosed oil spout
Device is widely used in various automobile engines.Fuel injector is equivalent to solenoid valve, including fuel injector main body and is set to fuel injector master
Oil inlet pipe, internal galleries, oil suction chamber needle-valve driving mechanism and the power supply device being sequentially communicated in vivo, oil liquid in high pressure oil rail from
Oil inlet pipe enters fuel injector, sprays from the jet of oil suction chamber bottom, and the needle-valve of blocking jet, fuel injector are equipped in fuel injection chamber
Injection process are as follows: electromagnetic coil generates electromagnetic force when power supply device is powered, and armature and needle-valve pick up, and fuel injector is opened, oil liquid
Fuel chamber is sprayed into through jet；Electromagnetic force disappears when power-off, and armature and needle-valve close jet under the action of reset spring,
Fuel injector stops oil spout.Energization, the power-off of fuel injector are controlled by electronic control unit with electric pulse, and distributive value is determined by electronic pulse width
It is fixed, pulse width=injection duration=distributive value；General needle lift is about 0.1mm, and injection duration 2~
Within the scope of l0ms.For the fuel injector being used in high-pressure common-rail fuel system, the optimization and injection pressure of injection rate
Increase the performance of fuel injector is influenced it is most important.
A kind of fuel injector for being additionally arranged pressurizing device is disclosed in the patent that application notification number is CN 104847553A,
Its pressurizing device includes connected major diameter inner cavity and path inner cavity, and the large diameter portion of pressurizing piston is located at intracavitary, path in major diameter
Part is located in path inner hole, and after electromagnet is powered, major diameter inner cavity lower part emptying, pressurizing piston is pushed, will be intracavitary in path
Oil liquid is extruded and is transferred in oil suction chamber, achievees the purpose that increase injection pressure；The large diameter portion of pressurizing piston and major diameter inner cavity
It is equipped with return spring between bottom, matching is carried out to parameters such as parameter, the return spring pretightning forces of supercharging device internal structure and is set
The flexible controllable of injection rate optimization can be realized in meter.
A kind of pressurization oil spout certainly for adding heating device is disclosed in the patent that Authorization Notice No. is CN 203640898U
Mouth is gasified oil liquid by electrically heated mode, generates high pressure by gas expansion, to reach the mesh for increasing injection pressure
's.
Above-mentioned two patent all realizes a pressure effect by way of separately setting power source, and using energy source is poor, and
Pressure effect is weaker.
Summary of the invention
1. technical problems to be solved
The technical problem to be solved in the present invention is that providing a kind of fuel injector of internal pressurization, the present invention is converted electrical energy into
Thermal energy not only as the direct driving force source for playing pressurization, it is multiple but also as the driving power source of another mechanical pressurization structure
Pressure effect superposition, realizes stronger pressure effect；Power source is single easily controllable, and convenient for operation, and using energy source is preferable.
2. technical solution
To solve the above problems, the present invention adopts the following technical scheme that:
A kind of fuel injector of internal pressurization, including fuel injector main body and be set to the intracorporal oil inlet pipe of fuel injector master, interior oil
Road, oil suction chamber, jet, needle-valve, needle-valve driving mechanism and power supply device, the oil inlet pipe include parallel to each other and are connected to oil inlet
The oil inlet pipe one and oil inlet pipe two of chamber, the other end of the oil suction chamber are connected to jet, and the internal galleries include that piston adds
It presses chamber, connection oil duct one and connects oil duct two, the oil inlet end of the oil inlet pipe one and oil inlet pipe two is respectively equipped with one He of check valve
Check valve two, the piston pressurization chamber are set on oil inlet pipe one, and the piston pressurization is intracavitary to be equipped with " ten " font piston, transverse direction
Piston body sidewall and the inner wall of piston pressurization chamber fit closely, and piston pressurization chamber is separated into upper oil cavitie and lower oil cavitie, longitudinal living
The phase backside of cock body extends respectively in two sections of oil inlet pipes one of piston pressurization chamber connection and the phase backside of longitudinal piston body is sealed
Oil inlet pipe one is closed, reset spring is equipped between horizontal piston body lower surface and piston pressurization bottom of chamber portion；The lower oil cavitie is logical
It crosses connection oil duct one to be connected to oil inlet pipe two, the oil inlet pipe one below the longitudinal direction piston body passes through connection oil duct two and oil inlet pipe
Two are connected to, and are respectively equipped with check valve three and check valve four, institute on the oil inlet pipe one and oil inlet pipe two of two lower section of connection oil duct
The threshold values for stating check valve three and check valve four is higher than the threshold values of check valve one and check valve two；The oil inlet pipe one is in check valve one
Part between piston pressurization chamber is equipped with electrical heating elements one, and the oil inlet pipe one is set on the part below check valve three
There are electrical heating elements two, the electrical heating elements one are connect with electrical heating elements two by electrical transmission element one, the electric heating
Element two is connect by electrical transmission element two with power supply device.
Further, the needle-valve driving mechanism includes the armature connecting with needle-valve upper end, and the armature is located in coil,
The coil is connect by electrical transmission element three with power supply device, and fixed plate is fixed on the armature, is consolidated in the fixed plate
Surely it is parallel to the spring of armature moving direction.Coil be powered after, generate magnetic field, attract armature move up, drive needle-valve to
Upper movement, opens jet, and oil liquid is sprayed from jet；After coil blackout, under the reset response of spring, band moving armature and needle
Valve moves down, and closes jet.Using most needle-valve driving structures is applied at present, driving effect is preferable, and can illustrate this
Invention is less to the change of fuel injector structure, with strong applicability.
Further, power regulator is equipped between the power supply device and electrical transmission element two.Pass through power regulator
The power of adjustable supply electrical heating elements one and electrical heating elements two, makes its oil liquid heating process provide different amounts of heat
Amount, to realize the controllable of oil liquid heating temperature.
Further, temperature sensor is equipped on the electrical heating elements one and electrical heating elements two.Using temperature
Sensor detects the temperature of heating element, convenient for grasping oil liquid temperature in real time, and makes adjustment in time.
3. beneficial effect
(1) present invention includes oil inlet pipe one, and is located at the position below check valve one and below check valve three in oil inlet pipe one
It sets and is respectively equipped with electrical heating elements one and electrical heating elements two, after energization, electrical heating elements carry out the oil liquid of corresponding site
Heating is vaporized expansion, and the oil liquid of three lower section of check valve is directly pressurized to be sent to oil suction chamber, i.e., is changed by physical form real
Now pressurize.
(2) present invention is equipped with piston pressurization chamber on oil inlet pipe one, and piston pressurization is intracavitary to be equipped with " ten " font piston, and list is living
It fills in and is equipped with electrical heating elements one above pressurizing chamber；It further include oil inlet pipe two, the lower oil cavitie of single-piston pressurizing chamber passes through connection oil duct
One is connected to oil inlet pipe two, and the oil inlet pipe one below longitudinal piston body of " ten " font piston passes through connection oil duct two and oil inlet pipe
Two connections.Heated by the oil liquid in one corresponding site of electrical heating elements a pair of oil inlet pipe, be allowed to gasification expansion, due into
The Intercepting effects of check valve one at one oil inlet end of oil pipe, so that oil liquid gas pushes down on piston, piston is moved down, will be in lower oil cavitie
Oil liquid extrude, which enters oil inlet pipe two by connection oil duct one and conveys downwards along oil inlet pipe two, realizes primary
Pressurization, oil liquid wash check valve four open and enter oil suction chamber along oil inlet pipe two；Meanwhile longitudinal piston body bottom end of " ten " font piston
Also moved down in oil inlet pipe one, oil liquid pushed, make a portion oil liquid wash open check valve three and along oil inlet pipe one into
Enter oil suction chamber, some oil liquid enters oil inlet pipe two by connection oil duct two and conveys downwards along oil inlet pipe two, realizes two
Secondary pressurization.It follows that double pressure effect can be achieved at the same time by the mechanical action of piston pressurization chamber.
To sum up, the thermal energy that the present invention converts electrical energy into is not only as the direct driving force source for playing pressurization, but also as another
The driving power source of mechanical pressurization structure, multiple pressure effect superposition, realizes stronger pressure effect；Power source is single to be easy to
Control, convenient for operation, and using energy source is preferable.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Wherein, 1- high pressure oil rail, 2- fuel injector main body, 3- oil inlet pipe one, 4- oil inlet pipe two, 5- check valve one, 6- is unidirectional
Valve two, 7- electrical heating elements one, 8- piston pressurization chamber, 9- " ten " font piston, 10- lower oil cavitie, 11- connection oil duct one, 12- connect
Connect oil duct two, 13- power supply device, 14- check valve three, 15- electrical heating elements two, 16- electrical transmission element one, 17- electrical transmission member
Part two, 18- power regulator, 19- electrical transmission element three, 20- coil, 21- armature, 22- spring, 23- fixed plate, 24- needle-valve,
25- oil suction chamber, 26- jet, 27- check valve four, 28- temperature sensor, 29- reset spring.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
Embodiment
The fuel injector of a kind of internal pressurization as shown in Figure 1, including fuel injector main body 2 and in fuel injector main body 2
Oil inlet pipe (connection high pressure oil rail 1), internal galleries, oil suction chamber 25, jet 26, needle-valve 24, needle-valve driving mechanism and charger
Part 13, the oil inlet pipe include oil inlet pipe 1 and oil inlet pipe 24 that be parallel to each other and being connected to oil suction chamber 25, the oil suction chamber 25
The other end be connected to jet 26, the internal galleries include piston pressurization chamber 8, connection oil duct 1 and connection oil duct two
12, the oil inlet end of the oil inlet pipe 1 and oil inlet pipe 24 is respectively equipped with check valve 1 and check valve 26, the piston pressurization
Chamber 8 is set on oil inlet pipe 1, is equipped with " ten " font piston 9, horizontal piston body sidewall and piston in the piston pressurization chamber 8
The inner wall of pressurizing chamber 8 fits closely, and piston pressurization chamber 8 is separated into upper oil cavitie and lower oil cavitie 10, the phase backside of longitudinal piston body
In two sections of oil inlet pipes 1 for extending respectively to the connection of piston pressurization chamber 8, and the phase backside of longitudinal piston body is all closed oil inlet pipe,
3, reset spring 29 is equipped between 8 bottom of horizontal piston body lower surface and piston pressurization chamber；The lower oil cavitie 10 passes through company
It connects oil duct 1 to be connected to oil inlet pipe 24, the oil inlet pipe 1 below the longitudinal direction piston body passes through connection oil duct 2 12 and oil inlet
Pipe 24 is connected to, and is respectively equipped with check valve 3 14 and list on the oil inlet pipe 1 and oil inlet pipe 24 of 2 12 lower section of connection oil duct
To valve 4 27, the threshold values of the check valve 3 14 and check valve 4 27 is higher than the threshold values of check valve 1 and check valve 26；It is described
Oil inlet pipe 1 is equipped with electrical heating elements 1, the oil inlet pipe 1 on the part between check valve 1 and piston pressurization chamber 8
Electrical heating elements 2 15, the electrical heating elements 1 and electrical heating elements 2 15 are equipped on the part below check valve 3 14
It is connected by electrical transmission element 1, the electrical heating elements 2 15 are connect by electrical transmission element 2 17 with power supply device 13.
In the present embodiment, the needle-valve driving mechanism includes the armature 21 connecting with 24 upper end of needle-valve, the armature 21
In coil 20, the coil 20 is connect by electrical transmission element 3 19 with power supply device 13, is fixed on the armature 21
Fixed plate 23, the fixed spring 22 for being parallel to 21 moving direction of armature in the fixed plate 23.After coil 20 is powered, magnetic is generated
, attract armature 21 to move up, needle-valve 24 is driven to move up, open jet 26, oil liquid is sprayed from jet 26；Coil
After 20 power-off, under the reset response of spring 22, band moving armature 21 and needle-valve 24 are moved down, and close jet 26.Using mesh
The most needle-valve driving structure of preceding application, driving effect is preferable, and can illustrate that the present invention is less to the change of fuel injector structure, fits
It is stronger with property.
In the present embodiment, power regulator 18 is equipped between the power supply device 13 and electrical transmission element 2 17.Pass through
The power of the adjustable supply electrical heating elements 1 and electrical heating elements 2 15 of power regulator 18, makes its oil liquid heating process
Different amounts of heat is provided, to realize the controllable of oil liquid heating temperature.
In the present embodiment, temperature sensor 28 is equipped on the electrical heating elements 1 and electrical heating elements 2 15.It adopts
The temperature of electrical heating elements is detected with temperature sensor 28, convenient for grasping oil liquid temperature in real time, and is made adjustment in time.
The concrete application process of the fuel injector of above-mentioned internal pressurization are as follows:
(1) after starting fuel injector, the oil liquid in high pressure oil rail 1 washes check valve 1 open and enters oil inlet pipe 1, by " ten " word
Longitudinal piston body of shape piston 9 is blocked in oil inlet pipe 1；Meanwhile the oil liquid in high pressure oil rail 1 washes the entrance of check valve 26 open
Oil inlet pipe 24, a part of oil liquid enter the lower oil cavitie 10 of piston pressurization chamber 8 (at this point, " ten " font piston from connection oil duct 1
About 9 two sides stress equalizations are in stable state), rest part oil liquid continues to convey along oil inlet pipe 24, and some oil
Liquid enters one 3 part of oil inlet pipe of 9 bottom end of " ten " font piston from connection oil duct 2 12, then oil inlet pipe 1 and oil inlet pipe 24
In oil liquid stopped respectively by check valve 3 14 and check valve 4 27 (because the threshold values of check valve 3 14 and check valve 4 27 is higher than
The threshold values of check valve 1 and check valve 2 6)；
(2) it is powered to electrical transmission element 1 and electrical transmission element 2 17, electrical heating elements 1 and electrical heating elements 2 15
Starting, heats the oil liquid of corresponding site, is vaporized expansion, the oil liquid in the oil inlet pipe 1 of 8 top of piston pressurization chamber
Gasification expansion, and because of the effect of check valve 1, the thrust downward by oil liquid gas of " ten " font piston 9, so that " ten " word
9 upside stress of shape piston is significantly greater than downside stress and pushes, and the oil liquid in lower oil cavitie 10 is extruded, and reset spring 29 is pressed
Contracting, the part oil liquid enter oil inlet pipe 24 by connection oil duct 1 and convey downwards along oil inlet pipe 24, realize primary pressurization,
Oil liquid washes check valve 4 27 open and enters oil suction chamber 25 along oil inlet pipe 24；Meanwhile longitudinal piston body bottom of " ten " font piston 9
End also moves down in oil inlet pipe 1, and oil liquid is pushed, a portion oil liquid is made to wash check valve 3 14 open and along oil inlet pipe
One 3 enter oil suction chamber 25, some oil liquid is into oil inlet pipe 24 and downward along oil inlet pipe 24 by connection oil duct 2 12
Secondary pressurized is realized in conveying；In addition, the oil liquid of 2 15 pairs of check valves of electrical heating elements, 3 14 lower section heats, it is vaporized
Expansion, so that the part oil liquid pushes its oil liquid below to enter oil suction chamber 25, is realized three times because of the effect of check valve 3 14
Pressurization；
(3) it is powered by electrical transmission element 3 19 to coil 20, generates magnetic field, armature 21 is attracted to rise, drive needle-valve 24
It moves up, jet 26 is opened, and oil liquid sprays fuel injector with biggish injection pressure, and spring 22 is compressed；
(4) it when oil spout closes to an end, disconnects between electrical transmission element 1 and electrical transmission element 2 17 and power supply device 13
Connection, temperature decline, the oil liquid liquefaction gasified before, pressurization dissipates three times, the two sides up and down of " ten " font piston 9 by
Power is balanced, returns to original state under the action of reset spring 29, and primary, secondary pressurized effect is also dissipated；To after end of injection,
The connection between electrical transmission element 3 19 and power supply device 13 is disconnected, is powered off to coil 20, under the reset response of spring 22, rank
Iron 21 moves down, and needle-valve 24 moves down therewith, until blocking jet 26, that is, completes an operated fuel injection.
It can be seen from the above, on the one hand the thermal energy that the present invention converts electrical energy into is used directly to drive reinforces fuel injector injection three times
The progress of pressure-operated, on the other hand as the driving effect source of piston pressurization chamber, to drive primary and secondary reinforcement fuel injector
The progress of pressure-operated is sprayed, triple pressure effect superpositions realize stronger pressure effect；Power source is single, easily controllable,
Convenient for operation；And using energy source is preferable.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as the change in spirit of the invention, to embodiment described above
Change, modification will all be fallen in scope of the presently claimed invention.
Claims (4)
1. a kind of fuel injector of internal pressurization, including fuel injector main body (2) and the oil inlet pipe being set in fuel injector main body (2), interior
Portion's oil duct, oil suction chamber (25), jet (26), needle-valve (24), needle-valve driving mechanism and power supply device (13), which is characterized in that
The oil inlet pipe includes oil inlet pipe one (3) and oil inlet pipe two (4) that be parallel to each other and being connected to oil suction chamber (25), the oil suction chamber
(25) the other end is connected to jet (26), and the internal galleries include piston pressurization chamber (8), connection oil duct one (11) and connect
Connect oil duct two (12), the oil inlet end of the oil inlet pipe one (3) and oil inlet pipe two (4) is respectively equipped with check valve one (5) and check valve
Two (6), the piston pressurization chamber (8) are set on oil inlet pipe one (3), and " ten " font piston is equipped in the piston pressurization chamber (8)
(9), horizontal piston body sidewall and the inner wall of piston pressurization chamber (8) fit closely, and piston pressurization chamber (8) is separated into upper oil cavitie
With lower oil cavitie (10), the phase backside of longitudinal piston body is extended respectively in two sections of oil inlet pipes one (3) of piston pressurization chamber (8) connection
And the phase backside of longitudinal piston body is all closed oil inlet pipe one (3), horizontal piston body lower surface and piston pressurization chamber (8) bottom
Between be equipped with reset spring (29)；The lower oil cavitie (10) is connected to by connecting oil duct one (11) with oil inlet pipe two (4), described vertical
It is connected to the oil inlet pipe one (3) below piston body by connection oil duct two (12) with oil inlet pipe two (4), the connection oil duct two
(12) check valve three (14) and check valve four (27), the list are respectively equipped on the oil inlet pipe one (3) and oil inlet pipe two (4) below
It is higher than the threshold values of check valve one (5) and check valve two (6) to the threshold values of valve three (14) and check valve four (27)；The oil inlet pipe one
(3) electrical heating elements one (7), the oil inlet pipe one are equipped on the part between check valve one (5) and piston pressurization chamber (8)
(3) electrical heating elements two (15), the electrical heating elements one (7) and electric heating are equipped on the part below check valve three (14)
Element two (15) by electrical transmission element one (16) connect, the electrical heating elements two (15) by electrical transmission element two (17) with
Power supply device (13) connection.
2. a kind of fuel injector of internal pressurization according to claim 1, which is characterized in that the needle-valve driving mechanism includes
The armature (21) connecting with needle-valve (24) upper end, the armature (21) are located in coil (20), and the coil (20) passes through fax
Defeated element three (19) connect with power supply device (13), is fixed with fixed plate (23) on the armature (21), the fixed plate (23)
Upper fixation is parallel to the spring (22) of armature (21) moving direction.
3. a kind of fuel injector of internal pressurization according to claim 1, which is characterized in that the power supply device (13) and electricity
Power regulator (18) are equipped between transfer element two (17).
4. a kind of fuel injector of internal pressurization according to claim 3, which is characterized in that the electrical heating elements one (7)
With temperature sensor (28) are equipped on electrical heating elements two (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711162374.3A CN107725240B (en) | 2017-11-21 | 2017-11-21 | A kind of fuel injector of internal pressurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711162374.3A CN107725240B (en) | 2017-11-21 | 2017-11-21 | A kind of fuel injector of internal pressurization |
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| Publication Number | Publication Date |
|---|---|
| CN107725240A CN107725240A (en) | 2018-02-23 |
| CN107725240B true CN107725240B (en) | 2019-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711162374.3A Active CN107725240B (en) | 2017-11-21 | 2017-11-21 | A kind of fuel injector of internal pressurization |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109681361A (en) * | 2018-11-29 | 2019-04-26 | 江苏大学 | It is a kind of to strengthen spraying atomizer based on vortex cavitation effect |
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| CN107148515A (en) * | 2014-08-08 | 2017-09-08 | 勒克拉布公司 | Injection apparatus and the method using injection apparatus |
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| DE10335059A1 (en) * | 2003-07-31 | 2005-02-17 | Robert Bosch Gmbh | Switching valve for a fuel injector with pressure booster |
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| US4870943A (en) * | 1986-07-01 | 1989-10-03 | Bradley Curtis E | Thermal liquid pump |
| CN1488035A (en) * | 2001-11-30 | 2004-04-07 | ���ء����߸� | Fuel injection valve |
| CN102758672A (en) * | 2011-04-29 | 2012-10-31 | 北京理工大学 | SCR (silicon controlled rectifier) pump nozzle device |
| CN203640898U (en) * | 2014-01-15 | 2014-06-11 | 苟仲武 | Self-pressurizing oil nozzle |
| CN107148515A (en) * | 2014-08-08 | 2017-09-08 | 勒克拉布公司 | Injection apparatus and the method using injection apparatus |
| CN104847553A (en) * | 2015-04-09 | 2015-08-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Pressurization type common-rail fuel injector capable of optimizing fuel-injecting rate |
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| CN107725240A (en) | 2018-02-23 |
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