CN202811141U - Energy storage type high pressure electronic fuel pump - Google Patents
Energy storage type high pressure electronic fuel pump Download PDFInfo
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- CN202811141U CN202811141U CN 201220202595 CN201220202595U CN202811141U CN 202811141 U CN202811141 U CN 202811141U CN 201220202595 CN201220202595 CN 201220202595 CN 201220202595 U CN201220202595 U CN 201220202595U CN 202811141 U CN202811141 U CN 202811141U
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Abstract
The utility model relates to an energy storage type high pressure electronic fuel pump, and belongs to the technical field of engines. The energy storage type high pressure electronic fuel pump comprises an electromagnetic power device and a plunger bushing component, wherein the plunger bushing component comprises a high-pressure vessel, a plunger bushing with a plunger hole, and a plunger capable of sliding in the plunger hole, a high-pressure fuel chamber is formed by the clearance volume of the plunger in the plunger hole, a low-pressure fuel chamber is formed by the clearance volume between the electromagnetic power device and the plunger bushing component, the fuel in the low-pressure fuel chamber is sucked into the high-pressure fuel chamber and sent to the high-pressure vessel through the plunger bushing component under the action of an electromagnetic driving apparatus, and the electromagnetic power device comprises an energy storage device, a moving part and a stationary part, and is controlled by driving current for transforming the electric energy into alternatively-changed bidirectional driving force for driving the moving part to make reciprocating motion. The all-phase work-doing energy is released at the part of the phases according to the electric reciprocating direct driving device and the energy storage principle, so that the transient energy density of the former electric driving device is increased, and the pump fuel pressure is increased.
Description
Technical field
The utility model belongs to technical field of engines, particularly spark ignition engines internal combustion oil of cylinder direct-injection system.
Background technique
The combustion manner that fuel oil is directly sprayed into the spark ignition engines cylinder is called direct injection technology.Because direct fuel-injection engine has good Economy, is the important development direction of alternate-engine.The key that realizes straight spray burning is fuel supply system, and it is low and to be convenient to use etc. be the target that direct injection technology is pursued that system satisfies requirement, the cost of engine combustion, performance and discharging to greatest extent.
Increasing motorcar engine adopts gasoline direct system (GDI).Be applied to the most altogether rail technology paths of gasoline that adopt of direct-injection system of motorcar engine, except start-up course, the pressure in the oily rail is usually between 8-20MPa.At present, the means of setting up oily rail pressure mainly rely on a kind of mechanical plunger pump with Electromagnetic Control, and this pump needs actuated by cams, and during installation, motor needs redesign.In addition, also there is following problem in mechanical type GDI high-pressure service pump:
1) oily rail pressure is uncertain before the engine start.Therefore shelve for a long time rear pressure and be lower than 1MPa, can affect transient process after starting and starting, engine emission pollutant etc.;
2) oily rail pressure is unstable, and pressure changes greatly with cam phase;
3) from complete oil-break to the transient working condition more complicated of recovering fuel feeding, during not oil spout or during idling, it is constant difficult to keep rail pressure;
4) in sub load, fuel oil is heated repeatedly, and low pressure diaphragm (MMD) is subjected to temperature and the dual destruction of alternating pressure;
5) the control association degree of motor oil mass demand computational logic and high pressure oil pump is large, and control logic is complicated;
6) oily rail volume is too little, and pressure surge increases, and volume is excessive, and pressurization is oversize before starting.
In a word, the problems referred to above and contradiction are that current GDI mechanical pump is intrinsic, thoroughly solve the technology path that needs to change pump oil.
Comparatively speaking, if with electronic type fuel pump fuel feeding, then do not have the problems referred to above.The advantage of electronic oil pump comprises: can set up high pressure before engine start; Can increase without restriction oily rail volume or introduce buffer, so that oily rail pressure fluctuation decrease sprays to realize constant voltage; Can realize as required fuel feeding more accurately; The oil-break operating mode can quit work fully; Operation of oil pump is very little on oil-way system (FUEL-LINE) impact; The pump housing is independent of motor, can install arbitrarily, is convenient to produce and after sales service; But the above fuel pressure of known disclosed electronic oil pump (electric oil pump) supply 8MPa is relatively more difficult.The pressure scope of building of rotary electronic fuel pump is not more than 3MPa.Do not have difference with mechanical type on the attainable pressure theory of plunger-type fuel pump with the electric rotating machine driving, but efficient is lower than the direct driving of mechanical type, cost is higher.As adopt the direct drive plunger oil pump of linear electric motor to-and-fro motion with cam mechanism, known disclosed scheme can only the one way loading cause energy
The low time availability of amount transformation efficiency is low, realizes that high pressure can cause the volume of product very large, and cost is also very high.
Summary of the invention
For the problems that exist in the prior art, the purpose of the utility model is to use the reciprocating type direct drive unit of electric energy and energy storage principle, the acting energy of full phase place is discharged in the part phase place, to improve the transient energy density toward electricity-driven device, improve the pump oil pressure.
The utility model above-mentioned purpose is achieved through the following technical solutions, that is: a kind of energy storage type high pressure electronic fuel pump, comprise electromagnetic motive device, the plunger guide bush assembly, the plunger guide bush assembly comprises high pressure volume and contain the plunger bushing of plunger hole and the plunger that can slide in plunger hole, clearance volume between electromagnetic motive device and the plunger guide bush assembly forms the low pressure oil pocket, plunger marks off high-voltage oil cavity in plunger hole, under the effect of electromagnetic actuator device, the plunger guide bush assembly sucks high-voltage oil cavity and force feed to high pressure volume with the fuel oil in the low pressure oil pocket, it is characterized by, described electromagnetic motive device comprises energy storage device, motion section and stationary part, electromagnetic motive device is the bi-directional drive power that alternately changes with electric energy conversion by driving current control, with the to-and-fro motion of actuation movement section, at reciprocating first direction, energy storage device absorbs the energy of autokinesis section, and in reciprocating second direction, the plunger guide bush assembly is at the acting in conjunction lower nip fuel oil of motion section and energy storage device.
Energy storage device comprises at least one energy storage spring between motion section and stationary part, also can adopt the hydraulic fluid chamber energy storage with a constant volume, piston comprising a compressible hydraulic fluid chamber, normal opening one-way valve from the hydraulic pressure supply source to hydraulic fluid chamber, when the hydraulic pressure cavity internal pressure exceeded institute's definite value, closed check valve and energy storage began.
Electromagnetic motive device comprises a voice coil motor, and motion section comprises hand basket and the coil that is attached thereto, and hand basket is used for transmitting the power that coil produces.
Described voice coil motor comprises that one comprises U-shaped soft magnetic bodies and Ci Dui, the magnetic heap is roughly Cylindrical object, the magnetic heap comprises the first permanent magnet and the first soft magnetic bodies of cutting apart vertically, U-shaped soft magnetic bodies comprises sidewall and bottom surface, the first permanent magnet of magnetic heap is connected with the bottom surface and forms a uniform annular space with sidewall, the first permanent magnet magnetizes vertically, described coil comprises the first coil, the side week of the inwall of the first coil and the first soft magnetic bodies cooperatively interacts, and can not have resistively axially to slide in described annular space.
Further, described magnetic heap comprises the second permanent magnet and the second soft magnetic bodies of cutting apart vertically, and wherein, the second permanent magnet and the first soft magnetic bodies are adjacent with the second soft magnetic bodies, the second permanent magnet axial charging, and its polarity is opposite with the first permanent magnet.
Such scheme can comprise an additional soft magnetic bodies, and described additional soft magnetic bodies is replenished soft magnetic bodies and arranged in the mode that reduces the magnetic resistance between the second soft magnetic bodies and the U soft magnetic bodies between hand basket and U-shaped soft magnetic bodies.
Additional soft magnetic bodies can include the bump that stretches to the second soft magnetic bodies, described hand basket is included in the depressed part of relevant position, and described depressed part is compatible with bump on how much, to such an extent as to do not affect the axial motion of motion section, simultaneously, this convex-concave structure can prevent rotatablely moving of motion section.
Structure for two soft magnetic bodies, described coil comprises the second coil, hand basket, the second coil and the first coil interfix, the second coil is opposite with the winding direction of the first coil, the side week of the inwall of the second coil and the second soft magnetic bodies cooperatively interacts, can not have resistively and axially slide in described annular space, the increase of the second coil can further strengthen electromagnetic force and reduce the heating of coil.
The lead-in wire of coil can pass through following solution,, comprises tenminal block and lead-in wire spring that is, and lead-in wire one of spring passes stationary part and is connected with tenminal block, other end connecting coil wire, and the spring section of the spring that goes between is between stationary part and motion section.
Another kind of electromagnetic motive device comprises a double solenoid drive unit, and described motion section is an armature.
More than various electromagnetic motive devices, all be fit to adopt following plunger pump scheme to cooperate with it and form more specifically technological scheme, namely, comprise an oil inlet hole, described plunger hole is roughly a circular hole, plunger and plunger hole close fit and be free to slide therein, motion section drive plunger is moved in plunger bushing.
Described plunger comprises an oil inlet hole and the oiling valve seat surface of UNICOM with it, and oil inlet hole runs through the plunger two ends, and seat surface is positioned at high-voltage oil cavity one end, comprises an oil-feed valve member and oil-feed valve spring, and oil-feed valve member, oil-feed valve spring and oiling valve seat surface form oiling valve.
Described oil inlet hole can pass the setting of plunger bushing wall.
More than various electromagnetic motive devices, also all be fit to adopt following plunger pump scheme to cooperate with it and form more specifically technological scheme, namely, comprise an oil inlet hole, described plunger hole is roughly a circular hole, plunger and plunger hole close fit and be free to slide therein, motion section drive plunger is enclosed within on the plunger moves.
Further, described plunger guide bush assembly comprises oil-feed valve member, oiling valve spring and oil-feed valve seat, and the oil-feed valve seat is arranged in an end of plunger hole, and oil inlet hole is by oil-feed valve seat and high-voltage oil cavity UNICOM.
For the above-mentioned scheme that contains oiling valve, a valve push rod that is fixed in stationary part can be set, the valve push rod stretches to hyperbaric chamber from oil inlet hole, the oil-feed stroke closes on when finishing, the valve push rod contacts and limits the oil-feed valve member with the oil-feed valve member and continues motion, thereby the restriction oiling valve cuts out fully, and its effect can further improve the transient energy output density of electromagnetic motive device, with further raising oil pressure.
Adopt at least one above-mentioned energy storage type high pressure electronic fuel pump, can form a kind of oil supplying device, this device also comprises Low-voltage Electronic oil pump and electromagnetic valve type oil nozzle, an oily rail that is connected with high pressure volume, it is energy storage type high pressure electronic fuel oil pump feed that the Low-voltage Electronic oil pump is positioned at fuel tank, the computer control unit, fuel oil is delivered to oily rail as required by after the energy storage type high pressure electronic fuel pump pressurization, the electromagnetic valve type oil nozzle with the fuel quantitative in the oily rail be supplied to motor.
Further, such scheme can comprise one by cam-actuated plunger type mechanical pump, and described plunger type mechanical pump is by Low-voltage Electronic oil pump supply fuel oil, to described oily rail input fuel oil.Corresponding is a kind of fuel cut mode with it, in case motor powers on (initiation key unlatching), described energy storage type high pressure electronic fuel pump is immediately to oily rail fuel feeding, until oily rail pressure arrives institute's definite value, the plunger type mechanical pump will be by engine-driving, behind the engine running, thereupon to oily rail input fuel oil.The method not only can be set up rapidly oily rail pressure in actual applications before engine start, be conducive to further increase oily rail volume, and reduce oily rail pressure fluctuation.
Adopt above-mentioned energy storage type high pressure electronic fuel pump, and opened by pressure formula oil nozzle, can form a kind of injection apparatus that can finish DFF Direct Fuel Feed in the cylinder, this device does not need oily rail, and is simple in structure, reliable and cost is low.
Description of drawings
By the following drawings and embodiment the utility model is done and to be described in further detail:
Energy storage type high pressure electronic fuel pump the first embodiment's that Fig. 1 provides for the utility model structural drawing;
Energy storage type high pressure electronic fuel pump the second embodiment's that Fig. 2 provides for the utility model structural drawing;
Energy storage type high pressure electronic fuel pump the 3rd embodiment's that Fig. 3 provides for the utility model structural drawing;
Energy storage type high pressure electronic fuel pump the 3rd embodiment that Fig. 3 a provides for the utility model replenishes the soft magnetic bodies structural drawing;
Energy storage type high pressure electronic fuel pump the 3rd embodiment's that Fig. 3 b provides for the utility model basket structure figure;
Energy storage type high pressure electronic fuel pump the 4th embodiment's that Fig. 4 provides for the utility model structural drawing;
Energy storage type high pressure electronic fuel pump the 5th embodiment's that Fig. 5 provides for the utility model structural drawing;
Energy storage type high pressure electronic fuel pump the 6th embodiment's that Fig. 6 provides for the utility model structural drawing;
Energy storage type high pressure electronic fuel pump the 7th embodiment's that Fig. 7 provides for the utility model structural drawing;
Energy storage type high pressure electronic fuel pump the 8th embodiment's that Fig. 8 provides for the utility model structural drawing;
Oil supplying device the first embodiment's that Fig. 9 provides for the utility model pie graph;
Oil supplying device the first embodiment's that Fig. 9 a provides for the utility model pump group structural drawing;
Oil supplying device the second embodiment's that Figure 10 provides for the utility model pie graph;
Oil supplying device the 3rd embodiment's that Figure 11 provides for the utility model pie graph;
Embodiment
Fig. 1 has shown energy storage type high pressure electronic fuel pump the first embodiment's that the utility model provides structural drawing.
The energy storage type high pressure electronic fuel pump comprises 100, one plunger guide bush assemblies 200 of an electromagnetic motive device.
Plunger guide bush assembly 200 comprises a plunger bushing 201, a plunger 211, a return spring 209, an oiling valve that is formed by oil-feed valve member 204, oiling valve spring 206 and oiling valve seat surface 205, an outlet valve that is formed by fuel-displaced valve member 212, oil outlet valve spring 215, oil outlet valve spring seat 216 and outlet valve seat surface 213, an output cover 219 that contains high pressure volume 217.Plunger bushing 201 comprises plunger hole 208, and an end of plunger hole 208 is connected with oil inlet hole 203 by oiling valve seat surface 205, and the other end is included plunger 211 in and marked off high-voltage oil cavity 208a, and plunger bushing 201 comprises plunger bushing spring seat 210.Plunger 211 comprises a central oil passage 211a who connects high-voltage oil cavity 208a and outlet valve seat surface 213.Fuel-displaced valve member 212 and oil outlet valve spring 215 are positioned among the fuel-displaced valve chamber 214, and fuel-displaced valve chamber 214 is communicated with high pressure volume 217 by oil discharge passage 216a.Plunger 211 is connected with output cover 219 modes with sealing, and oil outlet valve spring seat 216 is fixed in output cover 219 by modes such as compressions.Output cover 219 contains high pressure joint 218 and is used for being connected with high-pressure oil passage.
The first coil 103 remains in axial range of movement around the first soft magnetic bodies 113, and the second coil 180 remains in axial range of movement around the second soft magnetic bodies 114.The external diameter of the first soft magnetic bodies 113 and the second soft magnetic bodies 114 can be slightly larger than the first permanent magnet 111 when design and the second permanent magnet 110 slides smooth and easy to guarantee motion section 101 in the first soft magnetic bodies 113 and the second soft magnetic bodies 114 perimeter surface.
Return spring 209 acts between plunger bushing spring seat 210 and the magnetic heap 109.
A complete working procedure of described energy storage type high pressure electronic fuel pump is: fuel oil enters low pressure oil pocket 198 from oil input channel 117, when the electric current of postive direction passes through the first coil 103 and the second coil 180, under the effect of radial magnetic field around the first soft magnetic bodies 113 and the second soft magnetic bodies 114, motion section 101 up compressed energy-storage springs 102, the described up oil suction stroke that refers to plunger guide bush assembly 200, it is up that return spring 209 also promotes plunger bushing 201 simultaneously, it is thereupon up that oiling valve spring 206 promotes oil-feed valve member 204, high-voltage oil cavity 208a is opened and entered to fuel oil in the low pressure oil pocket 198 because pressure reduction promotes oil-feed valve member 204 simultaneously, approach when spacing by loam cake 107 when movement parts 101 is up, 207 restrictions of valve push rod oil-feed valve member 204 is taken a seat, when movement parts 101 up when spacing by loam cake 107, form initial separation G between oil-feed valve member 204 and the oil-feed valve seat 205, high-voltage oil cavity 208a was full of or approached and has been full of fuel oil this moment.When back current passes through the first coil 103 and the second coil 180, under the effect of radial magnetic field around the first soft magnetic bodies 113 and the second soft magnetic bodies 114, it is descending that motion section 101 promotes plunger bushing 201, it is descending that while energy storage spring 102 also promotes plunger bushing 201, before oil-feed valve member 204 leaves valve push rod 207, plunger bushing 201 is made non-resistance along plunger 211 and is slided, part fuel oil among the high-voltage oil cavity 208a and the gas that may exist at first are extruded to low-voltage fuel chamber 198 from oil inlet hole 203, acting of electromagnetic field and energy storage spring 102 energy discharges are converted into the kinetic energy of plunger bushing 201 and motion section 101 during this, the moment that breaks away from oil-feed valve member 204 at valve push rod 207, oil-feed valve member 207 is seated at oil-feed valve seat 205, this moment plunger bushing 201 further descending fuel oils that begin to compress among the high-voltage oil cavity 208a, when the oil pressure among the high-voltage oil cavity 208a was higher than the pretightening force of oil outlet valve spring 215 and the oil pressure summation in the fuel-displaced valve chamber 214, high pressure fuel entered high pressure volume 217.
In said process, work done energy storage in magnetic field be about in the motion section 101 in energy storage spring 102, motion section again magnetic field was done work 101 descending incipient stages to move can form be stored in motion section 101 and the plunger bushing 201, the above-mentioned energy summation that is stored will be released to the fuel oil among the force feed high-voltage oil cavity 208a in motion section 101 follow-up descending, so fuel pressure can significantly improve without energy-storage system relatively.Therefore, by adjusting initial separation G, can change the energy storage total amount.
In said process, can an external common fuel circulating pump between oil input channel 117 and back oil road 118, be used for the heat of low pressure oil pocket 198 is in time taken away.
Fig. 2 has shown energy storage type high pressure electronic fuel pump the second embodiment's that the utility model provides structural drawing.
Compare with energy storage type high pressure electronic fuel pump the first embodiment that the utility model provides, the motion section 101 of present embodiment only comprises the first coil 113, stationary part 199 only comprises the first permanent magnet 111 and the first soft magnetic bodies 113, the first coil 113 remains in its range of movement around the first soft magnetic bodies 113, and all the other structures are identical with energy storage type high pressure electronic fuel pump the first embodiment with working procedure.
The working procedure of present embodiment is identical with high-pressure electronic fuel pump the first embodiment.
Fig. 3 has shown energy storage type high pressure electronic fuel pump the 3rd embodiment's that the utility model provides structural drawing.
Compare with energy storage type high pressure electronic fuel pump the second embodiment that the utility model provides, the stationary part 119 of present embodiment has increased the second permanent magnet 103 and the second soft magnetic bodies 114, increased simultaneously an additional soft magnetic bodies 122, these increase can improve the first soft magnetic bodies 113 magnetic intensity on every side, thereby puies forward high-octane conversion efficiency.
Replenish the structure of soft magnetic bodies 122 and see Fig. 3 a, comprising around uniformly magnet case 122a and two protruding 122b and 122c, correspondingly, the structure of hand basket 108 is seen Fig. 3 b, comprising two depression 198a and 198b, compatible additional soft magnetic bodies 122 on how much does not affect the unrestricted motion of hand basket 108 to such an extent as to two depressions 198a and 198b are respectively with two protruding 122b and 122c, two protruding 122b and 122c can limit rotatablely moving of hand basket 108, replenish soft magnetic bodies 122 and can reduce magnetic resistance between U-shaped soft magnetic bodies 115 and the second soft magnetic bodies 114.
The working procedure of present embodiment is identical with high-pressure electronic fuel pump the second embodiment.
Fig. 4 has shown energy storage type high pressure electronic fuel pump the 4th embodiment's that the utility model provides structural drawing.
Compare with energy storage type high pressure electronic fuel pump the first embodiment that the utility model provides, present embodiment difference structurally is plunger bushing assembly 200.Plunger bushing assembly 200 comprises plunger bushing 201 and oil inlet hole 203 that the sidewall that is located at plunger 211 is connected with its central oil passage 211a of an end sealing.
Compare with energy storage type high pressure electronic fuel pump the first embodiment that the utility model provides, the difference of present embodiment on working procedure is as follows, namely, plunger bushing 201 is in the up process of companion campaign section 101, oil inlet hole 203 is opened, fuel oil in the low pressure oil pocket 198 enters high-voltage oil cavity 208a because of pressure reduction, plunger bushing 201 continues up until limited afterwards, plunger bushing 201 is in the descending incipient stage of companion campaign section 101, before oil inlet hole 203 is covered by plunger bushing 201, resistanceless motion is done by plunger bushing 201 and motion section 101 under energy storage spring 102 and electromagnetic force acting in conjunction, the energy of the acting of this stage electromagnetic energy and energy storage spring 102 discharges can be with the kinetic energy form stored energy of movement parts 101 and plunger bushing 201, behind the plunger bushing 201 further descending covering oil inlet holes 203, begin to compress the fuel oil among the high-voltage oil cavity 208a, when the oil pressure among the high-voltage oil cavity 208a was higher than the pretightening force of oil outlet valve spring 215 and the oil pressure summation in the fuel-displaced valve chamber 214, high pressure fuel entered high pressure volume 217.
Fig. 5 has shown energy storage type high pressure electronic fuel pump the 5th embodiment's that the utility model provides structural drawing.
Compare with energy storage type high pressure electronic fuel pump the first embodiment that the utility model provides, present embodiment difference structurally is plunger bushing assembly 200.Plunger bushing assembly 200 comprises a plunger bushing 201 that is connected with sealing means with output cover 219, a plunger 211 that comprises piston spring seat 211b, oil inlet hole 203 runs through the two ends of plunger 211 vertically, one end connects low-voltage fuel chamber 198, the other end connects oiling valve seat surface 205, plunger trepanning 208 is shoulder holes, plunger 211 enters from opening one end and forms high-voltage oil cavity 208a, the other end in delivery valve seat 213 attachment post plug sleeve holes 208, a valve push rod 207 that is fixed in loam cake 107 stretches to high-voltage oil cavity 208a from oil inlet hole 203.
The first embodiment compares with the energy storage type high pressure electronic fuel pump, the difference of present embodiment on working procedure is as follows, namely, when motion section 101 up compressed energy-storage spring 102, it is up that return spring 209 also promotes plunger 211 simultaneously, it is thereupon up that oiling valve spring 206 promotes oil-feed valve member 204, high-voltage oil cavity 208a is opened and entered to fuel oil in the low pressure oil pocket 198 because pressure reduction promotes oil-feed valve member 204 simultaneously, approach when spacing by loam cake 107 when movement parts 101 is up, 207 restrictions of valve push rod oil-feed valve member 204 is taken a seat, when movement parts 101 up when spacing by loam cake 107, form initial separation G between oil-feed valve member 204 and the oil-feed valve seat 205, high-voltage oil cavity 208a was full of or approached and has been full of fuel oil this moment.When motion section 101 promotes plunger 211 when descending, it is descending that energy storage spring 102 also promotes plunger 211 simultaneously, before oil-feed valve member 204 leaves valve push rod 207, plunger 211 is made non-resistance along plunger trepanning 208 and is slided, part fuel oil among the high-voltage oil cavity 208a and the gas that may exist at first are extruded to low-voltage fuel chamber 198 from oil inlet hole 203, acting of electromagnetic field and energy storage spring 102 energy discharges are converted into the kinetic energy of plunger 211 and motion section 101 during this, the moment that breaks away from oil-feed valve member 204 at valve push rod 207, oil-feed valve member 207 is seated at oil-feed valve seat 205, this moment plunger 211 further descending fuel oils that begin to compress among the high-voltage oil cavity 208a, when the oil pressure among the high-voltage oil cavity 208a was higher than the pretightening force of oil outlet valve spring 215 and the oil pressure summation in the fuel-displaced valve chamber 214, high pressure fuel entered high pressure volume 217.
Fig. 6 has shown energy storage type high pressure electronic fuel pump the 6th embodiment's that the utility model provides structural drawing.
Compare with energy storage type high pressure electronic fuel pump the first embodiment that the utility model provides, present embodiment difference structurally is, namely, output cover 219 is fixed in loam cake 107, valve push rod 207 is fixed in bottom surface 115b, bottom surface 115b is that a sealing that contains internal oil channel 198a is dull and stereotyped, the center hole that energy storage spring 102 passes magnetic heap 109 acts between hand basket 108 and the bottom surface 115b, return spring 209 acts between plunger bushing spring seat 210 and the output cover 219, hand basket 108 comprises a center hollow out 108b, and valve push rod 207 passes center hollow out 108b and stretches to high-voltage oil cavity 208a from oil inlet hole 203.
In the such scheme, the center hole of magnetic heap 109 also can be a shoulder hole that outer imperial palace is little, also can be a blind hole, and valve push rod 207 also can be fixed in magnetic heap 109.
Present embodiment is basic identical or similar to energy storage type high pressure electronic fuel pump the first embodiment in working procedure, repeats no more here.
Fig. 7 has shown energy storage type high pressure electronic fuel pump the 7th embodiment's that the utility model provides structural drawing.
Compare with energy storage type high pressure electronic fuel pump the 6th embodiment that the utility model provides, present embodiment difference structurally is, namely, U-shaped outer magnet 115 comprises an extending portion 190, hydraulic-pressure sleeve 192 is through the center of magnetic heap 109 and U-shaped outer magnet 115 and extending portion thereof, in hydraulic-pressure sleeve 192, be provided with a close fit and can free-moving hydraulic plunger 188, be fixed with an energy storage spring seat 189 in the extending portion 190, energy storage spring acts between hydraulic plunger 188 and the energy storage spring seat 189, be provided with in the extending portion 190 one often open comprise hydraulic valve piece 195, hydraulic pressure valve seat 196 and hydraulically-controlled one-way valve spring 194 are at interior hydraulically-controlled one-way valve, be provided with a passage 193 that leads to the low pressure oil sources in the outlet port of hydraulically-controlled one-way valve, between hydraulic plunger 188 and hydraulically-controlled one-way valve, be provided with a hydraulic volume chamber 191, hydraulic volume chamber 191 can extend to outside the extending portion 190, plunger bushing 201 comprises an oil inlet hole 203 that passes sidewall, one termination is received plunger 211, the other end sealing.
The 6th embodiment compares with the energy storage type high pressure electronic fuel pump, the difference of present embodiment on working procedure is as follows, namely, when motion section 101 is up, promote hydraulic plunger 188 and pass through hydraulic plunger 188 compressed energy-storage springs 102, when the pressure of hydraulic volume chamber 191 suddenly rises because of the hydraulic plunger motion, hydraulically-controlled one-way valve spare 195 will overcome the active force of hydraulically-controlled one-way valve spring 194 and close and hydraulically-controlled one-way valve seat 196, at this moment, along with hydraulic plunger 188 can continue up, the fuel oil of hydraulic volume chamber 191 is constantly pressurizeed, energy storage spring energy and hydraulic energy are constantly built high simultaneously and are stored, plunger bushing 201 is in the up process of companion campaign section 101, oil inlet hole 203 is opened, fuel oil in the low pressure oil pocket 198 enters high-voltage oil cavity 208a because of pressure reduction, plunger bushing 201 continues up until limited afterwards, plunger bushing 201 is in the descending incipient stage of companion campaign section 101, before oil inlet hole 203 is covered by plunger bushing 201, plunger bushing 201 and motion section 101 are at the pressure of hydraulic volume chamber 191, do resistanceless motion under energy storage spring 102 and the electromagnetic force acting in conjunction and with the form stored energy of kinetic energy, behind the plunger bushing 201 further descending covering oil inlet holes 203, begin to compress the fuel oil among the high-voltage oil cavity 208a, when the oil pressure among the high-voltage oil cavity 208a is higher than the pretightening force of oil outlet valve spring 215 and the oil pressure summation in the fuel-displaced valve chamber 214, high pressure fuel enters high pressure volume 217, during near descending terminal point, hydraulic volume chamber 191 pressure drops, this moment, hydraulic pressure was opened for unidirectional 195, if the fuel oil in the hydraulic volume chamber 191 has disappearance then can pass through to replenish from the fuel oil in the low pressure oil sources.
Fig. 8 has shown energy storage type high pressure electronic fuel pump the 8th embodiment's that the utility model provides structural drawing.
The energy storage type high pressure electronic fuel pump comprises 100, one plunger guide bush assemblies 200 of an electromagnetic motive device.
Plunger guide bush assembly 200 comprises a plunger bushing 201, a plunger 211, a return spring 209, one by fuel-displaced valve member 212, the outlet valve that oil outlet valve spring 215 and outlet valve seat surface 213 form, an output cover 219 that contains high pressure volume 217, plunger bushing 201 comprises plunger hole 208, plunger 211 enters and forms high-voltage oil cavity 208a from an end of plunger hole 208, the sidewall that oil inlet hole 203 passes plunger bushing 201 connects low pressure oil pocket 198 and plunger hole 208, plunger 211 comprises piston spring seat 211b, return spring 209 acts between piston spring seat 211b and the plunger bushing 201, oil outlet valve spring 215 acts between fuel-displaced valve member 212 and the output cover 219, plunger bushing 201 overlaps between 219 with output and is connected in the mode that seals, and output cover 219 contains high pressure joint 218 and is used for being connected with high-pressure oil passage.
A complete working procedure of described energy storage type high pressure electronic fuel pump is: the fuel oil with certain pressure enters low pressure oil pocket 198 from oil input channel 117, after the second solenoid 123 powers on, armature 132 is up because the second magnetic gap 126 drives motion section 101 under the effect of electromagnetic force, the described up oil suction stroke that refers to plunger guide bush assembly 200, motion section 101 up compressed energy-storage springs 102, it is up that return spring 209 promotes plunger 211, behind the certain hour, oil inlet hole 203 is opened, fuel oil in the low pressure oil pocket 198 enters high-voltage oil cavity 208a because of pressure reduction, continue the up a certain moment before limited at motion section 101 and plunger 211,123 outages of the second solenoid and the first solenoid 124 power on, armature 132 is descending because the first magnetic gap 127 drives motion section 101 under the effect of electromagnetic force, plunger 211 is descending in companion campaign section 101, in the initial incipient stage, before oil inlet hole 203 is by plunger 211 sealings, resistanceless motion is done by plunger 211 and motion section 101 under energy storage spring 102 and electromagnetic force acting in conjunction, part fuel oil among the high-voltage oil cavity 208a and the gas that may exist at first are extruded to low-voltage fuel chamber 198 from oil inlet hole 203, the energy of the acting of this stage electromagnetic energy and energy storage spring 102 discharges and can store with the kinetic energy form of movement parts 101 and plunger 211, behind the plunger 211 further descending sealing oil inlet holes 203, plunger 211 begins to compress the fuel oil among the high-voltage oil cavity 208a, when the oil pressure among the high-voltage oil cavity 208a is higher than the pretightening force of oil outlet valve spring 215 and the oil pressure summation in the fuel-displaced valve chamber 214, fuel-displaced valve member 212 leaves fuel-displaced valve member seat surface 213, and high pressure fuel enters high pressure volume 217.
Oil supplying device the first embodiment's that Fig. 9 provides for the utility model pie graph.
A kind of oil supplying device namely, comprises the high pressure fuel pump group 2 that is comprised of two energy storage type high pressure electronic fuel pumps that provide embodiment illustrated in fig. 1, a Low-voltage Electronic oil pump 405, pressure governor 406, oily rail 402, electromagnetic valve type oil nozzle 403, oil rail pressure sensor 404, computer control unit 401, low pressure oil supply pipe 407, low-pressure oil return pipe 408, pressure governor low-pressure oil return pipe 408a, high-pressure oil feed pipe 409, fuel tank 410.
The structural drawing of oil supplying device the first embodiment's who provides with reference to figure 9a pump group 2, described high pressure fuel pump group 2 comprises two energy storage type high pressure electronic fuel pumps 1, a Coupler 300, Coupler 300 comprises one by overflow valve member 303, the relief valve that relief valve spring 304 and relief valve seat surface 305 consist of, the overflow ducts 306 of connection relief valve seat surface 305 and high-voltage oil cavity 217, a high pressure joint 218, a back oil road 118, the drainback passage 118a of two energy storage type high pressure electronic fuel pumps 1 is connected low pressure seal spare 301a and is connected with back oil road 118 with 301b with 118b, the output cover 219a of two energy storage type high pressure electronic fuel pumps 1 is connected high-pressure sealing ring 302a and is connected with high-voltage oil cavity 217 with 302b with 219b.
The working procedure of described oil supplying device is, Low-voltage Electronic oil pump 405 is supplied to high pressure fuel pump group 2 with the fuel oil in the fuel tank 410 by low pressure oil supply pipe 407, wherein the part fuel oil is got back to fuel tank 410 through pressure governor 406 by pressure governor return tube 408a by low-pressure oil return pipe 408, in order to keep a goal pressure of oily rail 402, the information that computer control unit 401 provides according to oily rail pressure sensor 404, and motor is to the information of fuel demand amount, determine a target fuel delivery, according to driving voltage or electric current and pulsewidth and the frequency of this target fuel delivery decision to the high pressure fuel pump group, as required, the phase place work of can staggering of two energy storage type high pressure electronic fuel pumps of high pressure fuel pump group, also can cophasing work, computer unit 401 as required opens solenoid valve formula oil nozzle 403 to cylinder of internal-combustion engine inner direct fuel oil, fuel oil can be gasoline, also can be kerosene, diesel oil and other bio-fuel-oil.Low-voltage fuel is conducive to cool off described oil burning installation through described high pressure fuel pump group 2 backflow oil sump tanks 410, and the effect of pressure governor 406 is the pressure of keeping low pressure oil supply pipe 407, to prevent the normal operation of the described oil burning installation of aeration.
Because the impact of the factor such as temperature is when being higher than institute's definite value, overflow valve member 303 will promote relief valve spring 304 unlatching overflow ducts 306, until the pressure of oily rail 402 is lower than institute's definite value when the pressure in the oily rail 402.The pressure that this overflow is mainly used in controlling oily rail 402 can't be opened because of overpressure electromagnetic valve type oil nozzle 403 preventing.
Oil supplying device the second embodiment's that Figure 10 provides for the utility model pie graph.
Compare with oil supplying device the first embodiment that the utility model provides, present embodiment difference structurally is, comprise an energy storage type high pressure electronic fuel pump 1, a cam-actuated high-pressure service pump 413, high-pressure service pump 413 is business-like direct fuel-injection engine high-pressure service pumps that an existing market generally adopts, one route high-pressure service pump 413 leads to the mechanical pump high-pressure oil pipe 412 of oily rail 402, a-road-through is to the mechanical pump low pressure fuel pipe 407a and the electronic pump low pressure fuel pipe 407b that leads to the energy storage type high pressure electronic fuel pump, the pressure accumulating chamber that can select 411 of high-pressure service pump 413.
Compare with oil supplying device the first embodiment that the utility model provides, there is following difference in the working procedure of described oil supplying device, namely, Low-voltage Electronic oil pump 405 is supplied with high-pressure service pump 413 with the fuel oil in the fuel tank 410 by low pressure oil supply pipe 407 1 route mechanical pump low pressure fuel pipe 407a, another route electronic pump low pressure fuel pipe 407b supplies with energy storage type high pressure electronic fuel pump 1, before engine start or after starting, whether computer control unit 401 at first determines by energy storage type high pressure electronic fuel pump 1 oil supply rail 402 fuel feeding according to the information that oily rail pressure sensor 404 provides, when if the pressure in the oily rail 402 is lower than institute's definite value, then computer control unit 401 drive energy storage type high pressure electronic fuel pumps 1 by high-pressure oil pipe 409 and pressure accumulating chamber 411 to oily rail 402 fuel feeding, when the pressure in the oily rail 402 was higher than institute's definite value, 1 of energy storage type high pressure electronic fuel pump stopped to oily rail 402 fuel feeding.
The effect of pressure accumulating chamber 411 is the volumes that are equivalent to increase oily rail 402, and this effect can be solved by the volume of the oily rail 402 of direct increase.
Described oil supplying device can solve the pressure surge in the oil rail 402 and the contradiction between the rate of pressure rise when adopting simple mechanical high-voltage pump 413 effectively, be conducive to the startup of motor, thereby the pressure surge that is conducive to reduce in the oily rail 402 improves for accuracy and simplification control logic.
Oil supplying device the 3rd embodiment's that Figure 11 provides for the utility model pie graph.
A kind of oil supplying device namely, the energy storage type high pressure electronic fuel pump 1 that provided by first embodiment is provided and is connected an outward opening nozzle 500 that is connected with high pressure volume 217.
Outward opening nozzle 500 comprises 501, one lifting valve bases 502 of a poppet valve element, poppet valve spring 503, and poppet valve spring seat 504, bounding means 505, lifting valve base 502 comprise a poppet valve seat surface 506.
The working procedure of described oil supplying device is, at off position, poppet valve element 501 is seated at lifting valve base 506 under the effect of poppet valve spring 503, thereby close external-open nozzle 500, when the fuel pressure in the high pressure volume 217 can overcome the pass valve power of poppet valve spring 503,501 of poppet valve element are left lifting valve base 506, external-open nozzle 500 is opened, fuel oil in the high pressure volume 217 can spray into cylinder, in the lifting process of poppet valve element 501, poppet valve spring seat 504 meets with bounding means 505, and 501 of poppet valve element arrive its maximum lift.
Oil supplying device the first embodiment to the three embodiments of providing for the utility model all are provided energy storage type high pressure electronic fuel pump the first embodiment to the eight embodiments that the utility model provides.All belong to the utility model based on other further scheme of the utility model Spirit Essence and should belong to the protection interest field.
Claims (13)
1. energy storage type high pressure electronic fuel pump, comprise electromagnetic motive device and plunger guide bush assembly, the plunger bushing assembly comprises high pressure volume and contain the plunger bushing of plunger hole and the plunger that can slide in plunger hole, the coproduct of plunger in plunger hole is high-voltage oil cavity, clearance volume between electromagnetic motive device and the plunger guide bush assembly forms the low pressure oil pocket, the plunger guide bush assembly sucks high-voltage oil cavity and force feed to high pressure volume with the fuel oil in the low pressure oil pocket under the effect of electromagnetic actuator device, it is characterized in that described electromagnetic motive device comprises energy storage device, motion section and stationary part, electromagnetic motive device is to replace the bi-directional drive power of variation with the to-and-fro motion of actuation movement section by driving current control with electric energy conversion, and energy storage device comprises at least one energy storage spring between motion section and stationary part and at least one hydraulic fluid chamber.
2. energy storage type high pressure electronic fuel pump as claimed in claim 1, it is characterized by, described electromagnetic motive device comprises a voice coil motor, motion section comprises hand basket and the coil that is attached thereto, described voice coil motor comprises that one comprises U-shaped soft magnetic bodies and Ci Dui, the magnetic heap is roughly Cylindrical object, the magnetic heap comprises the first permanent magnet and the first soft magnetic bodies of cutting apart vertically, U-shaped soft magnetic bodies comprises sidewall and bottom surface, the first permanent magnet of magnetic heap is connected with the bottom surface and forms a uniform annular space with sidewall, the first permanent magnet magnetizes vertically, described coil comprises the first coil, the side week of the inwall of the first coil and the first soft magnetic bodies cooperatively interacts, and can not have resistively axially to slide in described annular space.
3. energy storage type high pressure electronic fuel pump as claimed in claim 2, it is characterized by, described magnetic heap comprises the second permanent magnet and the second soft magnetic bodies of cutting apart vertically, wherein, the second permanent magnet and the first soft magnetic bodies are adjacent with the second soft magnetic bodies, the second permanent magnet axial charging, its polarity is opposite with the first permanent magnet.
4. energy storage type high pressure electronic fuel pump as claimed in claim 3 is characterized by and is provided with an additional soft magnetic bodies between hand basket and the U-shaped soft magnetic bodies, replenishes soft magnetic bodies and arranges in the mode that reduces the magnetic resistance between the second soft magnetic bodies and the U soft magnetic bodies.
5. energy storage type high pressure electronic fuel pump as claimed in claim 4, it is characterized by, described additional soft magnetic bodies includes the bump that stretches to the second soft magnetic bodies, described hand basket is included in the depressed part of relevant position, described depressed part is compatible with bump on how much, to such an extent as to do not affect the axial motion of motion section.
6. energy storage type high pressure electronic fuel pump as claimed in claim 5, it is characterized by, described coil comprises the second coil, hand basket, the second coil and the first coil interfix, the second coil is opposite with the winding direction of the first coil, the side week of the inwall of the second coil and the second soft magnetic bodies cooperatively interacts, and can not have resistively axially to slide in described annular space.
7. such as one of claim 1-5 described energy storage type high pressure electronic fuel pump, it is characterized by coil and be connected with the lead-in wire spring, one of the lead-in wire spring is passed stationary part and is connected with tenminal block, and the spring section of the spring that goes between is between stationary part and motion section.
8. energy storage type high pressure electronic fuel pump as claimed in claim 1 is characterized by, and described electromagnetic motive device comprises a double solenoid drive unit, and described motion section is an armature.
9. such as one of claim 1-6 described energy storage type high pressure electronic fuel pump, it is characterized in that this energy storage type high pressure electronic fuel pump comprises an oil inlet hole that leads to high-voltage oil cavity, described plunger hole is roughly a circular hole, plunger and plunger hole close fit and be free to slide therein, motion section drive plunger is moved in plunger bushing.
10. energy storage type high pressure electronic fuel pump as claimed in claim 9, it is characterized by, described plunger comprises an oil inlet hole and the oiling valve seat surface of UNICOM with it, oil inlet hole runs through the plunger two ends, seat surface is positioned at high-voltage oil cavity one end, comprise an oil-feed valve member and oil-feed valve spring, oil-feed valve member, oil-feed valve spring and oiling valve seat surface form oiling valve, stationary part is provided with the valve push rod, the valve push rod stretches to hyperbaric chamber from oil inlet hole, the oil-feed stroke closes on when finishing, and the valve push rod contacts and limits the oil-feed valve member with the oil-feed valve member and continues motion.
11. energy storage type high pressure electronic fuel pump as claimed in claim 9 is characterized by, described oil inlet hole passes the setting of plunger bushing wall.
12. such as claim 11 a described energy storage type high pressure electronic fuel pump, it is characterized by, this energy storage type high pressure electronic fuel pump comprises an oil inlet hole that leads to high-voltage oil cavity, described plunger hole is roughly a circular hole, plunger and plunger hole close fit and be free to slide therein, motion section drive plunger is enclosed within on the plunger moves.
13. energy storage type high pressure electronic fuel pump as claimed in claim 12, it is characterized by described plunger guide bush assembly and comprise oil-feed valve member, oiling valve spring and oil-feed valve seat, the oil-feed valve seat is arranged in an end of plunger hole, oil inlet hole is by oil-feed valve seat and high-voltage oil cavity UNICOM, stationary part is provided with the valve push rod, the valve push rod stretches to hyperbaric chamber from oil inlet hole, and the oil-feed stroke closes on when finishing, and the valve push rod contacts and limits the oil-feed valve member with the oil-feed valve member and continues motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220202595 CN202811141U (en) | 2012-05-04 | 2012-05-04 | Energy storage type high pressure electronic fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220202595 CN202811141U (en) | 2012-05-04 | 2012-05-04 | Energy storage type high pressure electronic fuel pump |
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| CN202811141U true CN202811141U (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220202595 Withdrawn - After Issue CN202811141U (en) | 2012-05-04 | 2012-05-04 | Energy storage type high pressure electronic fuel pump |
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| CN (1) | CN202811141U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953883A (en) * | 2012-05-04 | 2013-03-06 | 浙江福爱电子有限公司 | Energy-storage type high-pressure electronic fuel pump, fuel supply device and application method thereof |
| CN108119273A (en) * | 2016-11-28 | 2018-06-05 | 长城汽车股份有限公司 | Fuel pump and oil supply system |
| CN109719799A (en) * | 2017-10-30 | 2019-05-07 | 南京德朔实业有限公司 | A kind of chain saw |
-
2012
- 2012-05-04 CN CN 201220202595 patent/CN202811141U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953883A (en) * | 2012-05-04 | 2013-03-06 | 浙江福爱电子有限公司 | Energy-storage type high-pressure electronic fuel pump, fuel supply device and application method thereof |
| WO2013163961A1 (en) * | 2012-05-04 | 2013-11-07 | 浙江福爱电子有限公司 | Energy-storing-type high-pressure electric fuel pump, fuel-supplying apparatus, and application method therefor |
| CN102953883B (en) * | 2012-05-04 | 2015-02-04 | 浙江福爱电子有限公司 | Energy-storage type high-pressure electronic fuel pump, fuel supply device and application method thereof |
| US10495077B2 (en) | 2012-05-04 | 2019-12-03 | Zhejiang Fai Electronics Co., Ltd. | Energy-storing-type high-pressure electric fuel pump, fuel-supplying apparatus, and application method therefor |
| CN108119273A (en) * | 2016-11-28 | 2018-06-05 | 长城汽车股份有限公司 | Fuel pump and oil supply system |
| CN109719799A (en) * | 2017-10-30 | 2019-05-07 | 南京德朔实业有限公司 | A kind of chain saw |
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Granted publication date: 20130320 Effective date of abandoning: 20150204 |
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