CN101886597B - Compact type ejection apparatus provided with injector opening inward - Google Patents
Compact type ejection apparatus provided with injector opening inward Download PDFInfo
- Publication number
- CN101886597B CN101886597B CN201010176705.0A CN201010176705A CN101886597B CN 101886597 B CN101886597 B CN 101886597B CN 201010176705 A CN201010176705 A CN 201010176705A CN 101886597 B CN101886597 B CN 101886597B
- Authority
- CN
- China
- Prior art keywords
- injection apparatus
- sparger
- petrolift
- fuel
- valve element
- Prior art date
- 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
Links
- 239000000446 fuel Substances 0.000 claims abstract description 48
- 238000002347 injection Methods 0.000 claims abstract description 44
- 239000007924 injection Substances 0.000 claims abstract description 44
- 230000000712 assembly Effects 0.000 claims description 33
- 238000000429 assembly Methods 0.000 claims description 33
- 238000007789 sealing Methods 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 230000033228 biological regulation Effects 0.000 claims description 5
- 239000000470 constituent Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000010992 reflux Methods 0.000 abstract 2
- 230000033001 locomotion Effects 0.000 description 4
- 230000008676 import Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/04—Injectors peculiar thereto
- F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
- F02M69/044—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into the intake conduit downstream of an air throttle valve
-
- 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
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/02—Injectors structurally combined with fuel-injection pumps
- F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
- F02M57/027—Injectors structurally combined with fuel-injection pumps characterised by the pump drive electric
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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
- F02M61/188—Spherical or partly spherical shaped valve member ends
-
- 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
- F02M61/1886—Details of valve seats not covered by groups F02M61/1866 - F02M61/188
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to an ejection apparatus, including a fuel pump (20a) and an injector (20c), characterized in that: the fuel pump (20a) and the injector (20c) are components of an integral injection module assembly (2), the fuel pump has a piston (23) and an actuator for operating the piston (23), the fuel pump (20a) also includes a pump chamber (27) with an input hole (50) for inputting fuel and a refluxing hole (51) connected to a fuel refluxing pipeline (6b), wherein the injector (20c) includes a valve component (40) opening inward.
Description
Technical field
The injection apparatus that the present invention relates to be provided with a petrolift and be provided with the compact structure formula of a sparger of inwardly opening.
Background technique
By prior art known the injection apparatus of various configurations.Especially the compact internal combustion engine that only has one or two cylinder and a little swept volume for the reason of cost and structure needs technological scheme alone.The application of this compact internal combustion engine is for example two-wheel vehicle or tricycle, or mowing machine etc.Known injection apparatus comprises a petrolift with pressure regulator at tank conventionally, wherein petrolift by the fuel with certain pressure be transported to a pipeline, such as in one " rail ".In the end of pipeline, be provided with a sparger, it is controlled by a control gear, injects fuel in sucking pipe or directly and is ejected in firing chamber.But this injection apparatus is very bothersome and especially expensive, so that it makes compact internal combustion engine also become very expensive.
By EP1340906B1 known a kind ofly there is electronically controlled fuel injection system, wherein sparger be disposed in pump piston near.In addition be provided with the precompression valve that an initial stage for the piston pressurization stroke during to tank at fuel return applies a precompression on fuel here.The part of fuel that this precompression valve makes to be arranged in pressure chamber is in the case to return line exhaust.Especially can reduce thus the formation of steam bubble in sparger.Yet this structure relatively complicated and this device is occupied large structure space.
Summary of the invention
By contrast, the injection apparatus with the feature of claim 1 according to the present invention has its advantage, and it has very compact structure.In addition can be especially advantageously manufactured on simple and cost according to injection apparatus of the present invention.According to injection apparatus of the present invention, especially can use in the compact internal combustion engine such as in two-wheel vehicle or mowing machine thus.According to the present invention, it will be realized in this wise: this injection apparatus comprises a petrolift and a sparger, and they are the complete constituent element of an ejection assemblies.This ejection assemblies is the assembly of compact a, small-scale structure, is provided with therein this petrolift and this sparger.For regulating the pressure regulator of jet pressure to be combined in this sparger.Petrolift comprises an actuator for operated piston and a pump chamber, this pump chamber with one for inputting input hole and the return port being connected with fuel return line of fuel.Here sparger comprises a valve element of inwardly opening.Can provide thus a simple especially valve assembly, because especially can cancel the cost of the valve element for always outwards opening so far.Pressure regulator preferably provides by the reset components of valve element.Therefore can provide the compact injection device with the valve element of inwardly opening, wherein in order to spray, this valve element moves against injection direction.This ejection assemblies also can be preassembled, so that it only needs to be connected on required interface and directly packs in Motor Vehicle.The parts of ejection assemblies are preferably arranged in a common housing of this ejection assemblies in the case.Except the compactedness of ejection assemblies, also have another large advantage, other parts for ejection assemblies also can minimize.
Dependent claims is expressed further configuration of the present invention.
Injection apparatus preferably includes a shower plate, and this shower plate is arranged on the downstream of valve element.Shower plate has been determined the outlet of fuel during course of injection.Therefore according to the present invention, determine by selecting, individually based on corresponding internal combustion (IC) Engine Design, there is the shower plate of different spray orifices.In this injection apparatus, can comprise thus the same parts of a large amount of numbers and only need to pack into the personalized shower plate for different application.Shower plate has a plurality of holes, and these holes for example can have the diameters of different sizes and/or towards different directions.Can provide personalized spraying thus.Particularly preferably be in the case, a plurality of axially bored lines in shower plate depart from the axial axis of injection apparatus.
For compact structure is as far as possible provided, be preferably provided with an input gap, it makes pump chamber be connected with sparger.Input in the case the radially outer that gap is arranged on sparger.Here input gap and especially comprise two gap sections, be arranged on a valve body their arcs and there is enough width, to fuel is carried towards valve element.
Sparger also preferably includes one and is provided with a receiving chamber, a sealing seat, a backstop and a valve body that is located at the reset components in receiving chamber.Here this valve element is also arranged in receiving chamber.Reset components applies a reposition force on valve element, wherein, and on the pressure side the forming and contacting with the fuel of pump chamber towards injection direction of valve element.When in present pump chamber, pressure raises, the pressure on valve element also raises, and wherein, is greater than the reposition force of reset components once this pressure, and valve element is opened.It should be pointed out that receiving chamber is preferably connected with tank or a return line, so that substantially there is external pressure in receiving chamber.
Sparger also preferably includes a regulation cock, for regulating the reposition force of reset components.At this, can change the relative position between regulation cock and valve body, to change reposition force.
Particularly preferably in the backstop of opening stroke of limiting valve element, be provided with one for the second sealing seat of valve element.Valve element, has consequently been avoided: under sparger open mode, fuel can flow in receiving chamber on the second sealing seat in backstop at sparger open mode lower seal thus.Therefore under sparger open mode, can avoid leaking.
Ejection assemblies also preferably includes one as the air regulator of complete constituent element.Can realize more compact structure thus, its mode is that air regulator is also combined in ejection assemblies.
According to another preferred configuration of the present invention, ejection assemblies also just in time comprises Yi Ge actuator, and it had both operated petrolift and has also operated air regulator.Here this actuator comprises a coil and first armature and second armature.Especially can cancel thus one separate for air regulator or for the actuator of petrolift, so that part count reduces widely.Self-evident, also obtain thus the decline of cost.Therefore first this common actuator bears the function of pump driving and secondly bears the adjusting driving function for air regulator.Operation when this common actuator can realize petrolift and air regulator, wherein, actuator comprises a coil, first armature and second armature.The first armature configures to petrolift in the case, and the second armature configures to air regulator, and two armature can operate by common coil.For compact structure is as far as possible provided, preferably the first armature is that a part and second armature of air regulator are parts for petrolift.Especially the first armature is a valve element of air regulator, and the second armature is a piston of petrolift.
In addition, the invention still further relates to a kind of internal-combustion engine, it just comprise what a cylinder or just in time two cylinders and one according to injection apparatus of the present invention.This internal-combustion engine particularly preferably comprises a fuel tank, and this fuel tank is arranged on the top of ejection assemblies.Especially petrolift can be designed to be very little thus.
Accompanying drawing explanation
Referring to accompanying drawing, carry out the preferred embodiment of the present invention will be described in detail.In accompanying drawing, represent:
Fig. 1: there is the summary view of a mini engine of injection apparatus according to an embodiment of the invention,
Fig. 2: according to this embodiment's injection apparatus summary view, and
Fig. 3 and 4: by this sparger two turn over the sparger sectional view in the plane of 90 ° mutually.
Embodiment
Referring to Fig. 1 to 4, describe in detail and have according to the injection apparatus of the first embodiment of the present invention mini engine 1.
Fig. 1 summarily represents to be configured to the structure of the mini engine 1 of single-cylinder engine.This mini engine 1 comprises 3, one, a cylinder 4, one control units 5 of the reciprocating piston of portion and a tank 6 within it.Tank 6 is connected with ejection assemblies 2 by a fuel inlet pipe road 6a.A fuel return line 6b returns to tank 6 by ejection assemblies 2.As represented by Fig. 1 summary, tank 6 be arranged on ejection assemblies 2 above.Fuel flows to ejection assemblies 2 based on gravity by fuel inlet pipe road 6a thus.This ejection assemblies 2 is very summarily represented and is comprised a petrolift, sparger and an air regulator with the pressure regulator of combination, so that this ejection assemblies 2 is formed very compactly.
Miniature motor 1 also comprises a throttle valve 7, and this throttle valve is arranged in a sucking pipe 8.On cylinder 3, be also provided with 9, one suction valves 10 of a spark plug and an outlet valve 11.Label 12 represents a bypass conduit for air, it make air in sucking pipe 8 on air-flow direction throttle valve 7 Yi Ge region branch above out and directly import and be combined in the air regulator in ejection assemblies 2.An outlet 12z the passing in sucking pipe 8 below at throttle valve 7 of bypass conduit 12.
Mini engine 1 also comprises a gas exhaust piping 13, and it is discharged or closed by outlet valve 11.This external gas exhaust piping 13 is provided with an oxygen sensor 14, this oxygen sensor is connected with control unit 5, control unit 5 also connects with 15, one oil temperature sensors 16 of a cooling water sensor and a sensor unit 17 for detection of pressure in the throttle position in sucking pipe 8, temperature and sucking pipe 8.Control unit 5 is by the SC sigmal control ejection assemblies 2 obtaining in the case.In addition be provided with an amplifier 18, while starting for starting in actuator, realize and start fast and make thus piston accelerate rapidly.Here amplifier 18 is especially enlarged into the set signal of actuator of ejection assemblies.Therefore injection apparatus according to the present invention is configured to have a petrolift, a pressure regulator, and the ejection assemblies 2 of a sparger and an air regulator, and can be designed to that compactness and structure are little especially.In addition according to injection apparatus of the present invention, can be on cost very advantageously manufacture and especially can pre-install in advance and be made into complete ejection assemblies, so that it only needs to be installed on mini engine 1 as the assembly of compact structure.Therefore by four unitary part, be petrolift, pressure regulator, the combination of sparger and air regulator has guaranteed favourable manufacturability on simple and cost.Petrolift and air regulator are operated by a common actuator in the case.Injection apparatus 2 according to the present invention for example can use in the mini engine of two-wheel vehicle or mowing machine thus.
Fig. 2 represents the detailed drawing of ejection assemblies 2.In this ejection assemblies 2, combined petrolift 20a, pressure regulator 20b, sparger 20c and air regulator 20d.Be provided with the housing 25 of a multi-part type for this reason.Pressure regulator 20b is the constituent element of sparger 20c in the case.Here a common actuator operates petrolift 20a and air regulator 20d simultaneously.This common actuator comprises 21, one the first armature 22 of a coil and a second armature 23a in the case.As appreciable by Fig. 2, the first armature 22 is parts of air regulator 20d, and wherein armature 22 is configured to valve element 22a on its one end, and this valve element can discharge or close this bypass conduit 12 at the valve seat 12a place of a bypass conduit 12.Air regulator 20d has also been configured to first Returnning spring 28.The second armature 23a is a part of petrolift 20a in this embodiment.Here a piston 23 of the second armature 23a and petrolift 20a is permanently connected.The second armature 23a is columniform parts and the shape with sleeve pipe, and it also has the function that supports the second Returnning spring 24 that makes the second armature 23a reset except guide function.While passing through electric current in the case in coil 21, this coil had both operated the first armature 22 and had also operated the second armature 23a.When the electric current of coil 21 is cancelled, the first Returnning spring 28 or the second Returnning spring 24 turn back to again in the home position shown in Fig. 2 two armature.Position shown in Fig. 2 is a position on the terminal of an aspiration stroke of petrolift 20a in the case, and in this position, piston is positioned on top dead center.At this moment this actuator is not activated.
Ejection assemblies 2 also comprises the housing 25 of multi-part type, and this housing comprises the first housing parts 25a, the second housing parts 25b, the 3rd housing parts 25c and the 4th housing parts 25d.Here the 4th housing parts 25d is arranged between petrolift 20a and air regulator 20d.In the case the 4th housing parts 25d have one substantially tank shape shape and on the bottom section of portion, additionally also there is a backstop 26 within it.Here backstop 26 is rigidly fixed to and as the backstop of the second armature 23a at the 4th housing parts 25d the interior end.As also appreciable by Fig. 2, on the outer basal plane 25e of the 4th housing parts 25d, be provided with the first Returnning spring 28 and it is supported on this outer basal plane 25e.As shown in Figure 2, the 4th housing parts 25d position is arranged on regularly the inside of coil 21 and is connected with the second housing parts 25b by a sleeve pipe 34 here.In the second housing parts 25b, be provided with for fuel inlet pipe road 6a and for the interface of fuel return line 6b.Fuel inlet pipe road 6a passes into a suction areas 32 in the case, and the recirculation zone 33 of fuel return line 6b in housing drawn.Here should point out, can be also that fuel return line 6b does not turn back to tank, but be connected with fuel inlet pipe road 6a.The 3rd housing parts 25c has determined a pump chamber 27, can make fuel under pressure therein by piston 23.Here in the 3rd housing parts 25, be provided with input hole 50 and a return port 51 with the second safety check 31 with the first safety check 29.The first safety check 29 opens or closes between suction areas 32 and pump chamber 27 and is connected.The second safety check 31 opens or closes being connected between pump chamber 27 and recirculation zone 33, by this recirculation zone, draws fuel return line 6b.
As seen from Figure 2, return port 51 is set to than the more close piston 23 of input hole 50 on the axial X-X of ejection assemblies.Therefore because the second safety check 31 is opened to recirculation zone 33 by pump chamber 27, at piston 23, move to until be arranged in the fuel of pump chamber 27 during the control edge 51a at return port 51 places and be discharged to fuel return line 6b (the stroke H1 of piston 23) by return port 51.Also can make thus the bubble that may exist be discharged in fuel return line 6b by pump chamber 27.Only when piston 23 is crossed control edge 51a, just can realize the pressure rise in pump chamber 27 in the case, wherein with H2, represent the range of piston 3.
As especially, by Fig. 3 and 4 appreciable, sparger 20c comprises a valve element 40, in this embodiment its structure balling-up.Sparger 20c also comprises spring members 41 and a valve body 42 and an inner receiving chamber 49 for valve element 40 is resetted, and is configured with sealing seat 43 on this valve body.Valve element 40 is positioned on sealing seat 43 hermetically.In receiving chamber 49, be provided with a backstop 44, in this backstop, form another valve seat 44a.Backstop 44 is configured to annular and can for example by a press fit connection and valve body 42, be permanently connected in this embodiment.In addition sparger 20c comprises a regulation cock 45, and it is arranged on the end contrary with valve element 40 of valve body 42.Regulation cock 45 for example can be made to screw rod and can change by screwing in deeper valve body 42 reposition force of spring members 41.Here spring members 41 forms the pressure regulator of injection apparatus, to determine the size of jet pressure.Spring members 41 is configured to volute spring here.
On the outside of valve body 42, be provided with one first input gap 46 and one second input gap 47.Here first and second input gap 46,47 forms and is connected with pump chamber 27.As appreciable by Fig. 3, in valve body 42, structure has attachment hole 42a, and 42b, for making fuel by the on the pressure side 40a that inputs gap 46,47 and import to valve element 40.As also appreciable by Fig. 4, the receiving chamber 49 of valve body 42 (not shown) that is connected with tank or fuel return line 6b by a backflow part 48.
Sparger 20c also comprises a shower plate 60, it on flow direction, be arranged on sealing seat 43 after.In shower plate 60, be provided with a plurality of holes 61, wherein in Fig. 3 and 4, only demonstrate and express two holes.Here axis X-the X of these Kong Keyu ejection assemblies offers or axially bored line off-axis X-X abreast.These holes 61 can at random be distributed in shower plate 60 and have different diameters in the case.Shower plate 60 is preferably made by Special Steel Plate, so that can on cost, advantageously provide shower plate 60.Because these holes 61 can at random be opened in shower plate 60, thus can provide different injection vaporific, for example taper or two-beam spraying.As by Fig. 3 and 4 appreciable, shower plate 60 is for example fixed in a locking nut 62 by laser bonding and is then screwed around on a threaded portion of the 3rd housing parts 25c.
Here as follows according to the function of ejection assemblies 2 of the present invention: by the position shown in Fig. 2 set out-in this position, carried out the suction of fuel by fuel inlet pipe road 6a, carry out the energising of coil 21.The voltage that sends coil 21 to by control unit in the case amplifies by amplifier 18.Thus can be by large magnetic force in piston 23, thus this piston in the direction of arrow A towards the bottom motion of pump chamber 27.Energising by coil 21 also makes the first armature 22 of air regulator 20d side by side in the direction towards arrow B, be attracted.Make thus air regulator 20d open, so that air can flow by bypass conduit 12.Here should point out, by the selection selectively actuatable armature 22 of the different spring constant of the first Returnning spring 28 and the second Returnning spring 24 or piston 23 not in the same time.
Therefore the energising by coil 21 is accelerated piston 23, and wherein, the second safety check 31 based on still opening can't be realized the rising of pressure in pump chamber 27.In piston 23 motion until cross return port 51 during fuel and bubble-these bubble coalescence that may exist in pump chamber 27 on the end face of piston 27-by return port 51, discharge.In the case piston 23 can be almost without back pressure accelerate.Once piston base crosses the control edge 51a on return port 51, can be discharged in fuel return line 6b by pump chamber 27 without medium again.At this moment the rising of initiation pressure in pump chamber 27, wherein pressure is by first and second input gap 46,47 and hole 42a, and 42b imports the on the pressure side 40a of valve element 40.Valve element is still sealed on sealing seat 43 in the case, until be applied to the reposition force that fuel pressure on valve element 40 is greater than spring members 41.Here Fig. 3 represents the state that sparger 20c also closes.Once the pressure on valve element 40 is greater than the reposition force of spring members 41, valve element in the direction of arrow C towards lateral movement in sparger, and by lifting (Fig. 4) on sealing seat 43.At this, after a short running length, valve element 40 forms contact with valve seat 44a in backstop 44 and makes the present regional seal under high pressure before the relative shower plate of receiving chamber 49 of valve body 42, is especially provided with spring members 41 in this receiving chamber.Can prevent thus: the fuel under high pressure flows to backflow part 48 by hollow valve body 42.In the open position shown in Fig. 4, the fuel under high pressure at this moment can be directed and injected by the hole 61 in shower plate 60.
When injection should finish, the energising of coil 21 finishes, so that the second reset components 24 makes piston 23 reset to again the initial position shown in Fig. 2.During this return movement of piston 23, the second safety check 31 cuts out and the first safety check 29 is opened.Therefore fuel can be drawn in pump chamber 27 by fuel inlet pipe road 6a.If form bubble thus or bubble is inhaled into, these bubbles are collected at again the piston base of piston 23, so that they can be discharged from by the second safety check 31 of opening at that time along with the next stroke of piston 23 again.Because the pressure in pump chamber 27 declines again thus, spring members 41 makes valve element 40 reset to again the closed position on the sealing seat shown in Fig. 3.
Valve body 42 is configured to rectangular parallelepiped shape in this embodiment, thus input gap 46,47 can be in the gap of the side surface configurations Cheng Zhi of the valve body 42 of rectangular parallelepiped shape.But can be also, this valve body 42 be configured to cylindrical substantially, consequently inputting gap is configured to part circumferential weld gap.Can consider in addition, pump chamber 27 is connected with the on the pressure side 40a of valve element 40 by the passage in housing parts 25c and/or valve body 42.
Therefore a kind of ejection assemblies 2 that is provided with the sparger 20c inwardly opening can be provided according to the present invention, by this ejection assemblies, especially can realize in firing chamber direct injection without a doubt thus.Here the use of shower plate 60 also allows the high-freedom degree aspect the beam shaping of spraying, and consequently ejection assemblies according to the present invention can be applicable in various internal-combustion engines, wherein only needs to change shower plate.Therefore can reach high same parts number and can on cost, advantageously manufacture thus.
It should be pointed out that this injection apparatus can be very compact and cost on advantageously form.As actuator, be always the electromagnetic actuator flowing by coil electricity in this embodiment.But should point out, also can use in principle other possible actuator, for example piezoelectricity type actuator.In addition should point out, the closure member 22a of described air regulator 20d also can be made to tapered, the end regions of taper especially of actuator 22, or is for example made to spherical or part is spherical in other any mode.
Claims (11)
1. injection apparatus, comprise a petrolift (20a) and a sparger (20c), wherein, this petrolift (20a) and this sparger (20c) are the complete constituent element of an ejection assemblies (2), this petrolift has a piston (23) and one for operating the actuator of this piston (23), this petrolift (20a) also comprise one with one for inputting pump chamber (27) and the return port (51) being connected with a fuel return line (6b) of the input hole (50) of fuel, wherein, this sparger (20c) comprises a valve element (40) of inwardly opening, it is characterized in that: described sparger (20c) has a valve body (42), this valve body has the receiving chamber (49) of reception described valve element (40) and a reset components (41) and in this valve body, is provided with one for the sealing seat (43) of described valve element (40), and, by an input gap (46, 47) carry out fuel input, this input gap makes described pump chamber (27) be connected with on the pressure side (40a) of described valve element (40).
2. according to the injection apparatus of claim 1, it is characterized in that: described sparger (20c) comprises a shower plate (60) with a plurality of holes (61), realizes the injection of fuel by this shower plate.
3. according to the injection apparatus of one of above claim, it is characterized in that: described valve body (42) is also provided with the backstop (44) for described valve element (40) and a reset components (41).
4. according to the injection apparatus of claim 3, it is characterized in that: described sparger (20c) also comprises a regulation cock (45), for regulating the reposition force of described reset components (41).
5. according to the injection apparatus of claim 3, it is characterized in that: described receiving chamber (49) is connected with a tank (6).
6. according to the injection apparatus of claim 3, it is characterized in that: described backstop (44) has one for second sealing seat (44a) of described valve element (40).
7. according to the injection apparatus of claim 2, it is characterized in that: whole or a plurality of axially bored lines in the described hole (61) in described shower plate (60) depart from the axial axis (X-X) of described injection apparatus.
8. according to the injection apparatus of claim 1 or 2, it is characterized in that: also comprise an air regulator (20d), this air regulator is the complete constituent element of described ejection assemblies (2).
9. injection apparatus according to Claim 8, it is characterized in that: described injection apparatus just in time comprises Yi Ge actuator, it had both operated described petrolift (20a) and had also operated described air regulator (20d), wherein, described actuator comprises a coil (21), first armature (22) and second armature (23a).
10. according to the injection apparatus of claim 9, it is characterized in that: described the first armature (22) is a part of described air regulator (20d), described the second armature (23a) is a part of described petrolift (20a).
11. internal-combustion engines, is characterized in that: this internal-combustion engine comprises what a cylinder just or the injection apparatus of one of two cylinders and the above claim of basis just in time.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200910003081 DE102009003081A1 (en) | 2009-05-13 | 2009-05-13 | Compact injector with inward opening injector |
| DE102009003081.6 | 2009-05-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101886597A CN101886597A (en) | 2010-11-17 |
| CN101886597B true CN101886597B (en) | 2014-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010176705.0A Expired - Fee Related CN101886597B (en) | 2009-05-13 | 2010-05-13 | Compact type ejection apparatus provided with injector opening inward |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5761925B2 (en) |
| CN (1) | CN101886597B (en) |
| DE (1) | DE102009003081A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7124350B2 (en) * | 2018-03-08 | 2022-08-24 | 株式会社デンソー | fuel injection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2707804B2 (en) * | 1990-06-18 | 1998-02-04 | トヨタ自動車株式会社 | Driving device for piezoelectric element |
| JP2884108B2 (en) * | 1990-10-01 | 1999-04-19 | 愛三工業株式会社 | Flow control valve |
| US5661895A (en) * | 1995-07-25 | 1997-09-02 | Outboard Marine Corporatin | Method of controlling the magnetic gap length and the initial stroke length of a pressure surge fuel pump |
| JP4168564B2 (en) * | 2000-02-01 | 2008-10-22 | 株式会社デンソー | Fuel injection device |
| JP4431268B2 (en) * | 2000-11-17 | 2010-03-10 | 株式会社ミクニ | Electronically controlled fuel injection device |
| JP2007263008A (en) * | 2006-03-29 | 2007-10-11 | Mikuni Corp | Electromagnetic actuator and fuel injector |
| DE102006041471A1 (en) * | 2006-09-05 | 2008-03-06 | Robert Bosch Gmbh | Fuel injecting valve for fuel injection systems of internal-combustion engines, has spraying device which is carried out as multi-fan-jet nozzle such that fluid disks form laminated disks in which fluid disks run divergently to each other |
| DE102007050547A1 (en) * | 2007-10-23 | 2009-04-30 | Robert Bosch Gmbh | Compact injector |
| JP2010190069A (en) * | 2009-02-17 | 2010-09-02 | Mikuni Corp | Fuel injection device |
-
2009
- 2009-05-13 DE DE200910003081 patent/DE102009003081A1/en not_active Withdrawn
-
2010
- 2010-05-13 JP JP2010110850A patent/JP5761925B2/en not_active Expired - Fee Related
- 2010-05-13 CN CN201010176705.0A patent/CN101886597B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE102009003081A1 (en) | 2010-11-18 |
| JP2010265898A (en) | 2010-11-25 |
| JP5761925B2 (en) | 2015-08-12 |
| CN101886597A (en) | 2010-11-17 |
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