CN106014722A - Electronic control fuel pump - Google Patents
Electronic control fuel pump Download PDFInfo
- Publication number
- CN106014722A CN106014722A CN201610350817.0A CN201610350817A CN106014722A CN 106014722 A CN106014722 A CN 106014722A CN 201610350817 A CN201610350817 A CN 201610350817A CN 106014722 A CN106014722 A CN 106014722A
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- Prior art keywords
- valve
- fuel pump
- spring
- needle
- electronic controlled
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- 239000000446 fuel Substances 0.000 title claims abstract description 107
- 230000006835 compression Effects 0.000 claims description 40
- 238000007906 compression Methods 0.000 claims description 40
- 238000013016 damping Methods 0.000 claims description 20
- 230000007704 transition Effects 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 31
- 239000000295 fuel oil Substances 0.000 description 13
- 238000002485 combustion reaction Methods 0.000 description 9
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 206010008469 Chest discomfort Diseases 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000010761 intermediate fuel oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 210000001215 vagina Anatomy 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses an electronic control fuel pump. The electronic control fuel pump comprises a pump body and a flow control valve arranged in the pump body. The flow control valve comprises a valve seat, a needle valve capable of moving in the axial direction, a preloaded spring and an adjustment screw capable of adjusting the preloading force of the preloaded spring. One end of the preloaded spring is fixedly arranged on a needle valve head backing onto the valve seat, and the other end of the preloaded spring is fixedly connected with the adjustment screw. A step is arranged on the needle valve head and provided with a step cylindrical surface capable of guiding the preloaded spring and a step plane serving as a preloaded spring supporting surface. By adopting the structure, after set assembling of the electronic control fuel pump, the adjustment screw can slightly adjust the spring preloading force applied by the preloaded spring within a certain range through thread screwing, change of the work characteristic of the flow control valve is caused, and therefore fine adjustment of the oil supply amount of the electronic control fuel pump can be realized. Finally, not only can the oil supply amount of the electronic control fuel pump be accurately controlled, but also the consistency of the oil supply amount after set assembling of the electronic control fuel pump can be guaranteed.
Description
Technical field
The present invention relates to the electronic controlled fuel pump that a kind of car combustion engine uses, it is adaptable to inject fuel directly into internal combustion engine
Fuel injection system in combustor, particularly a kind of electronic controlled fuel pump.
Background technology
It is known that electronic controlled fuel pump, can inject fuel directly in the fuel injection system in combustion chambers of internal combustion engines.
Fuel is transported to low pressure chamber by fuel tank by electronic controlled fuel pump, then is transported to a fuel rail being connected with high pressure chest by low pressure chamber
In.The pressure of fuel rail intermediate fuel oil, is generally regulated by flow control valve.Therefore, the accurate control to fuel pump fuel delivery
Directly affect the operating characteristic of whole fuel injection system, be also one of the key technology of fuel pump.
At present, in order to accurately control fuel pump fuel delivery, generally use the automatically controlled flow control valve being integrated on fuel pump
Realize the on-demand regulation of fuel delivery.Engine electric-controlled unit calculates this flow control according to the information of fuel rail pressure sensor
The opening time of valve processed, only will be for reaching during necessary to injection pressure, amount of fuel pumps into fuel rail, once in fuel rail
Fuel pressure reach required rated value, flow control valve is i.e. closed, the ram travel blowback that unnecessary fuel oil is left
In the oil-feed oil circuit of fuel pump.
Being disclosed a kind of method running the fuel injection system that internal combustion engine uses by US 8925525B2, this fuel sprays
System has a flow control valve.The oil inlet end of fuel pump and intracavity have a check valve, when solenoid no power, single
It is in normally open to valve；When the solenoid is activated, closed check valve, cavity pressure sets up, and delivery valve opens, and fuel enters
Oil rail；When the electric current of solenoid supplies and is again terminated when, check valve is forced open again.So, fuel pump carries
To oil rail fuel quantity number be to be determined by the pulse-width controlled moment of flow control valve.
Disclosed a kind of method running the fuel injection system that internal combustion engine uses by US 8925525B2, be directed to
Flow control valve controls the shortcoming of flow mainly, and after petrolift general assembly, the fuel delivery of fuel pump can not be again
Regulation, can only be controlled pulsewidth by control unit monitoring fuel rail fuel pressure regulation and realize Flow-rate adjustment, the combustion that batch produces
Material pump can cause the fuel delivery deviation of petrolift due to the foozle of parts or rigging error, and this fuel delivery deviation is nothing
Method correction, and then the operating characteristic of whole fuel injection system can be affected.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, and provides a kind of electronic controlled fuel pump,
This electronic controlled fuel pump can realize the real-time and minor adjustments of fuel delivery after electronic controlled fuel pump assembly assembles, and accurately controls fuel delivery,
Ensure the concordance of electronic controlled fuel oil pump feed amount.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
A kind of electronic controlled fuel pump, including the pump housing and the flow control valve that is arranged in the pump housing, described flow control valve include valve seat,
The needle-valve that can move axially, preloading spring and the regulation screw of preloading spring pretightning force can be regulated；One end of described preloading spring
Being fixedly installed on the needle-valve head deviating from valve seat, the other end of preloading spring is fixing with regulation screw to be connected.
Moving axially of described needle-valve is mainly driven by electromagnetic actuator, and described electromagnetic actuator includes that fixed cover is loaded on
The armature of needle-valve periphery, it is set in the fixed core of preloading spring periphery and is set in the solenoid of fixed core periphery.
Described fixed core coordinates with regulation screw thread, and the reach on described regulation screw is more than the spiral shell in fixed core
Stricture of vagina length.
Described electromagnetic actuator also includes housing, and fixed core is press-fitted in housing, by O type between regulation screw and housing
Circle is tightly connected.
Also it is set with on described needle-valve and fixes the stop block being connected with armature.
Described needle-valve head is provided with step, and this step has the stepped cylindrical face that can guide preloading spring and as pre-
The step plane in tight spring supporting face.
The center of described valve seat is disposed with centre bore and spring eye, is provided with valve block spring, valve in described spring eye
One end of flat spring is fixedly connected with valve block；The periphery of valve seat is set with transition connecting apparatus, and this transition connecting apparatus is arranged
There are through hole and the sealed seat surface that can match with valve block；Described valve seat is circumferentially evenly arranged with several inclined holes；Described pin
The afterbody of valve can match with the center of valve block, when needle-valve moves axially and makes valve block spring-compressed, and described through hole, inclined hole
Can be interconnected with centre bore.
It is provided with the compression chamber being connected with centre bore in the described pump housing and the plunger of compression chamber volume size can be regulated.
Oil-in, oil inlet passage and the pressure damping being connected by oil-in it is provided with oil inlet passage in the described pump housing
Chamber.
After the present invention uses said structure, have the advantages that
Electronic controlled fuel pump is after general assembly, and above-mentioned regulation screw, by threaded engagement, the spring that can apply preloading spring is pre-
Clamp force, carries out small regulation within the specific limits, causes the change of flow control valve operating characteristic, so that electronic controlled fuel
The fuel delivery of pump is capable of trace regulation, finally can accurately control the fuel delivery of electronic controlled fuel pump, can guarantee that again automatically controlled combustion
The concordance of fuel delivery after oil pump assy assembling.
Accompanying drawing explanation
Fig. 1 shows electronic controlled fuel pump structure schematic diagram of the present invention.
Fig. 2 shows the structural representation of flow control valve in electronic controlled fuel pump of the present invention.
Fig. 3 shows the structural representation of electromagnetic actuator in electronic controlled fuel pump of the present invention.
Fig. 4 shows that in the present invention, initial tension of spring affects relation to what movable member moved.
Fig. 5 shows the work process schematic diagram of electronic controlled fuel pump of the present invention.
Wherein have: 1, the pump housing；2, oil inlet end parts；3, oil outlet end parts；4, plunger part；5, flow control valve；6, enter
Hydraulic fluid port；7, pressure damper；8, oil-out；9, delivery valve；10, plunger；11, plunger bushing；12, ring flange；13, valve seat；131、
Spring eye；132, inclined hole；133, centre bore；14, electromagnetic actuator；15, transition connecting apparatus；151, sealed seat surface；152, pass through
Through hole；16, pressure damping chamber；17, oil inlet passage；18, compression chamber；19, valve block；191, valve block seat surface；192, valve block plane；
20, valve block spring；21, longitudinal axis；22, transverse holes；23, transverse holes axis；24, the axis of oil outlet end parts；25, electromagnetic wire
Circle；26, movable member；27, housing；28, fixed core；281, through hole；282, female thread；29, preloading spring；30, regulation spiral shell
Nail；301, external screw thread；31, needle-valve；311, step；312, the face of cylinder；313, plane；314, afterbody；32, armature；33, backstop
Block；34, O.
Detailed description of the invention
The present invention is further detailed explanation with concrete better embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of electronic controlled fuel pump, including the pump housing 1, oil inlet end parts 2, oil outlet end parts 3, compression chamber 18,
Plunger part 4 and flow control valve 5.
Above-mentioned oil inlet end parts 2 include oil-in 6 and pressure damper 7.Pressure damper 7 is positioned at the pressure of the pump housing 1
In damping cavity 16, the pump housing 1 below pressure damping chamber 16 arranges oil inlet passage 17.Oil transfer pump by 3～6.5bar low compression ignition
Oil is pumped in oil-in 6 by oil pipe, and pressure damper 7 can alleviate the pressure oscillation of fuel oil in pressure damping chamber 16, makes
Obtain electronic controlled fuel pump and can guarantee that higher pump rate when high rotating speed.
Above-mentioned oil outlet end parts 3 include oil-out 8 and delivery valve 9.Above-mentioned compression chamber 18 is positioned at the middle part of the pump housing 1, compression
The right side in chamber 18 is provided with transverse holes 22, and transverse holes 22 is connected with oil inlet passage 17 by flow control valve 5；Compression chamber 18
Left side is connected with oil outlet end parts 3.
The axis 24 of above-mentioned oil outlet end parts, transverse holes axis 23 are the most coaxial with the longitudinal axis 21 of flow control valve 5.
Above-mentioned plunger part 4 includes plunger 10 and plunger bushing 11, and plunger 10 can move up and down.Plunger 10 is by a cam
Driving, this cam is driven by camshaft or bent axle.Plunger 10 is arranged on the interior and relative plunger bushing 11 of plunger bushing 11 and moves up and down.
When plunger 10 moves downward, compression chamber 18 volume increases, thus pumps fuel.When plunger 10 moves upward, fuel oil
Boosted by compression, through delivery valve 9, from oil-out 8 flows out the fuel rail being transported to fuel injection system.Namely compression chamber 18
Volume depend on the plunger 10 position in the pump housing 1.
As depicted in figs. 1 and 2, flow control valve 5 includes that ring flange 12, valve seat 13, electromagnetic actuator 14, transition connect dress
Put 15, valve block 19, valve block spring 20, needle-valve 31, preloading spring 29 and regulation screw 30.
Above-mentioned valve seat 13 is press fitted against in the oil duct being arranged on the pump housing 1, and relies on ring flange 12 to be fastened with the pump housing 1 by screw
Connect.Valve seat 13 is the most preferably evenly equipped with 6 inclined holes 132, and the center of valve seat 13 is disposed with centre bore 133 and spring eye
131。
Above-mentioned 6 inclined holes 132 are all connected with centre bore 133, and centre bore 133 is connected with transverse holes 22.
Being provided with valve block spring 20 in above-mentioned spring eye 131, the other end of valve block spring 20 is fixed on the valve block of valve block 19
On seat surface 191.
Above-mentioned transition connecting apparatus 15 is sleeved on the periphery of valve seat 13, and transition connecting apparatus 15 is provided with sealed seat surface
151 and through hole 152.Above-mentioned sealed seat surface 151 can seal with the valve block plane 192 of valve block 19 and coordinate, and formed one ring-type
Sealing coordinate face.
Above-mentioned needle-valve 31 can move axially, needle-valve 31 have one be positioned at right side needle-valve head and one be positioned at left side
Afterbody 314.
Being provided with step 311 on above-mentioned needle-valve head, this step 311 has the stepped cylindrical that can guide preloading spring 29
Face 312 and the step plane 313 as preloading spring 29 supporting surface.Namely one end of preloading spring 29 is sleeved on stepped cylindrical face
312 peripheries, and fixing with step plane 313 be connected.The other end of preloading spring 29 is fixing with regulation screw 30 to be connected.
The afterbody 314 of needle-valve 31 can contact with the valve block plane 192 of valve block 19 and tight fit so that valve block 19 follows pin
The motion of valve 31 and move.
Moving axially of needle-valve 31 is mainly driven by electromagnetic actuator 14, as it is shown on figure 3, electromagnetic actuator 14 includes shell
Body 27, fixed cover are loaded on the armature 32 of needle-valve 31 periphery, are set in the fixed core 28 of preloading spring 29 periphery and are set in and determine ferrum
The solenoid 25 of core 28 periphery.
The stop block 33 that be connected fixing with armature 32 also it is set with on above-mentioned needle-valve 31, excellent between stop block 33 and needle-valve 31
Elect welding as.Needle-valve 31, armature 32 and stop block 33 fixed set are integrally forming, and the application is referred to as movable member 26.
Above-mentioned fixed core 28 and regulation screw 30 threaded engagement, the reach on regulation screw 30 is more than in fixed core 28
Reach.
Above-mentioned fixed core 28 is press-fitted in housing 27, and the center of fixed core 28 is machined with through hole 281, one end of through hole 281
Preferably being machined with one section of female thread 282, this female thread 282 matches with the external screw thread 301 of regulation screw 30.Regulation screw 30
The screwing length of external screw thread 301 should be greater than the screwing length of the female thread 281 of fixed core 28, it is ensured that regulation screw 30 compresses forever
Preloading spring 29 also produces the thrust suitable with spring force to preloading spring 29.The spring force of preloading spring 29 and regulation screw
The length of 30 compression preloading springs 29 is correlated with, and spring force compresses the increase of the length of preloading spring 29 along with regulation screw 30 and increases
Greatly.
Above-mentioned preloading spring 29 is contained in fixed core 28, is assemblied between movable member 26 and regulation screw 30.
Above-mentioned regulation screw 30 is connected by threaded engagement with fixed core 28, and applies pressure to preloading spring 29 so that pretension
Spring 29 produces certain spring force to movable member 26, the force direction of this spring force by valve block 19 away from transition connecting apparatus
15.The afterbody 314 of needle-valve 31 props up valve block 19.Regulation screw 30 is tightly connected by O 34 with housing 27, it is ensured that fuel oil energy
It is not leaked in being sealed in flow control valve.
Initial tension of spring has important impact to lifting and taking a seat to move of movable member 26.Research shows, spring is pre-
Clamp force increases, it will increases movable member 26 and lifts required resistance, so that needle-valve 31 opens required time lengthening；With
Time, spring force when movable member 26 is taken a seat increases so that the speed taken a seat increases, so that required when needle-valve 31 is closed
Time shortens.
Fig. 4 shows that initial tension of spring affects relation to what movable member 26 moved.From fig. 4, it can be seen that spring pre-tightening
Power increases, and spring force when movable member 26 is taken a seat increases so that the speed taken a seat increases so that needle-valve 31 close time
Between, foreshorten to t1 from t2.
Owing to needle-valve 31 directly contacts with valve block 19, the motion of the motion accompanying needle-valve 31 of valve block 19.Therefore, spring pre-tightening
Power is to the effect that the effect that needle-valve 31 moves also is that valve block 19 is moved by initial tension of spring.
The work process of the electronic controlled fuel pump of the present invention is as follows:
1. electronic controlled fuel pump is in oil suction stroke
Fig. 5 then shows the work process schematic diagram of electronic controlled fuel pump.When plunger 10 moves down, solenoid 25 no power.
Now, needle-valve 31 extrudes the valve block 19 sealed seat surface 151 away from transition connecting apparatus 15 under the effect of preloading spring 29.Plunger
During 10 move down, in the pump housing 1, the volume of compression chamber 18 becomes big, and pressure reduces.Thus, it is applied to from through hole 152
The hydraulic coupling of valve block 19 is more than the hydraulic coupling being applied to valve block 19 from compression chamber 18.Therefore so that valve block 19 connects away from transition
The sealed seat surface 151 of device 15.Pressure damping chamber 16 is by oil inlet passage 17, through hole 152, inclined hole 132, transverse holes 22 and pressure
Contracting chamber 18 connects.Therefore, during the fuel oil in pressure damping chamber 16 is inhaled into compression chamber 18.
2. electronic controlled fuel pump is in overflow stroke
Plunger 10 is during lower dead center is moved upward to top dead centre, and the fuel pressure in compression chamber 18 increases, compression chamber 18
Internal combustion oil liquid pressure produces active force to valve block 19, and valve block 19 moves towards sealed seat surface 151.But, needle-valve 31 is at pretension bullet
Valve block 19 is extruded so that valve block 19 is far from the sealed seat surface 151 of transition connecting apparatus 15 under the effect of spring 29.So, pressure
Power damping cavity 16 keeps connecting with compression chamber 18, moves up by plunger 10 and the fuel oil that pressurizes passes through horizontal in compression chamber 18
Hole 22, centre bore 133, inclined hole 132, through hole 152 and oil inlet passage 17 return to pressure damping chamber 16.
3. electronic controlled fuel pump is in compression travel
At the end of overflow stroke, now apply voltage to solenoid 25, the fixed core 28 around solenoid 25, armature 32
Form magnetic circuit with housing 27 and produce magnetic field, between fixed core 28 separated from one another and armature 32, produce magnetic attraction.Work as fixed core
When the magnetic attraction produced between 28 and armature 32 becomes greatly until being more than the spring force of preloading spring 29, armature 32 is just to fixed core
28 move, and thus, the needle-valve 31 integrated with armature 32 also moves towards fixed core 28.When needle-valve 31 is towards fixed core 28
Time mobile, valve block 19 and needle-valve 31 are separated from one another, and valve block 19 is not subjected to the power applied by needle-valve 31.Therefore, valve block 19 is at valve
The effect of the resilience force of flat spring 20 and the fuel oil hydraulic coupling of compression chamber 18 is moved to the sealed seat surface of transition connecting apparatus 15
On 151.
Valve block 19 moves to fit on the sealed seat surface 151 of transition connecting apparatus 15 and with sealed seat surface 151, inclined hole
132 disconnect with through hole 152.Thus, terminate fuel oil and flowed to pressure damping chamber 16 by compression chamber 18.Move upward at plunger 10
Time, regulate the amount of fuel from compression chamber 18 returning pressure damping cavity 16 by cutting off compression chamber 18 with pressure damping chamber 16.By
This, the amount of fuel pressurizeed in controlling compression chamber 18.As can be seen here, when overflow stroke terminates in plunger 10 uphill process,
Being to be determined by required fuel delivery, fuel delivery the most then overflow stroke is short, otherwise the longest.
When compression chamber 18 is cut off with pressure damping chamber 16, when plunger 10 is moved further up to top dead centre
Time, the fuel pressure in compression chamber 18 increases further.When the fuel pressure in compression chamber 18 becomes predetermined pressure or bigger
Time, delivery valve 9 opens, and the high pressure fuel in compression chamber 18 is discharged from electronic controlled fuel pump by oil-out 8, is transported to fuel oil injection
In the fuel rail of system.
Plunger 10 moves down after arriving top dead centre, which reduces the fuel pressure in compression chamber 18.Now, disconnect
The electric current supply of solenoid 25.Therefore, valve block 19 from sealed seat surface 151 again away from, fuel is inhaled from pressure damping chamber 16
Enter compression chamber 18.When the fuel pressure in compression chamber 18 increases to predetermined pressure, it is possible to the electric current of cutoff solenoid 25
Supply.By above-mentioned oil suction stroke repeatedly to compression travel, electronic controlled fuel is pumped the fuel oil of contracting suction and discharges pressurization
Fuel oil.The fuel delivery of fuel oil is adjusted by the initial time and pulse width period controlling the electric current supply of solenoid 25.
In the whole work process of electronic controlled fuel pump, valve block 19 plays connection or cuts off pressure damping in electronic controlled fuel pump
The effect of the compression chamber 18 in chamber 16 and the pump housing 1.When valve block 19 is away from transition connecting apparatus 15, pressure damping chamber 16 and compression
It is interconnected between chamber 18；When valve block 19 is fitted with transition connecting apparatus 15, between valve block plane 192 and sealed seat surface 151
Form a sealed diameter, mutually cut off between pressure damping chamber 16 and compression chamber 18.The motion lifted and the take a seat speed of needle-valve 31
Degree directly affect fuel circulation number.It is to say, screw regulation screw 30 so that preloading spring 29 reduction length becomes
Long, initial tension of spring increases, and lifting of movable member 26 slows, and the shut-in time of valve block 19 is the most slack-off, from pressure damping
Chamber 16 flows into the oil inlet quantity of the compression chamber 18 in the pump housing 1 and also can somewhat increase.Equally, regulation screw 30 is screwed so that pretension
Spring 29 reduction length is elongated, and initial tension of spring increases, and the seating velocity of movable member 26 accelerates, and the opening time of valve block 19 is also
Can accelerate, the oil inlet quantity flowing into compression chamber 18 from pressure damping chamber 16 also can somewhat increase.
After the assembling of electronic controlled fuel pump assembly, the discharge characteristic of detection electronic controlled fuel pump, by changing regulation screw 30 with fixed
The length of thread engagement regulation spring force of iron core 28, causes the change of flow control valve operating characteristic, thus realizes electronic controlled fuel
The trace regulation of oil pump feed amount, finally can accurately control the fuel delivery of electronic controlled fuel pump, can ensure that again electronic controlled fuel pump is total
Become the concordance of fuel delivery.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited in above-mentioned embodiment
Detail, in the technology concept of the present invention, technical scheme can be carried out multiple equivalents, this
A little equivalents belong to protection scope of the present invention.
Claims (9)
1. an electronic controlled fuel pump, including the pump housing and the flow control valve being arranged in the pump housing, it is characterised in that: described flow control
Valve processed includes valve seat, the needle-valve that can move axially, preloading spring and can regulate the regulation screw of preloading spring pretightning force；Described pre-
One end of tight spring is fixedly installed on the needle-valve head deviating from valve seat, and the other end of preloading spring is fixing with regulation screw to be connected.
Electronic controlled fuel pump the most according to claim 1, it is characterised in that: moving axially of described needle-valve is mainly held by electromagnetism
Row device is driven, and described electromagnetic actuator includes that fixed cover is loaded on the armature of needle-valve periphery, is set in determining of preloading spring periphery
Iron core and the solenoid being set in fixed core periphery.
Electronic controlled fuel pump the most according to claim 2, it is characterised in that: described fixed core coordinates with regulation screw thread,
Reach on described regulation screw is more than the reach in fixed core.
Electronic controlled fuel pump the most according to claim 2, it is characterised in that: described electromagnetic actuator also includes housing, determines ferrum
Core is press-fitted in housing, is tightly connected by O between regulation screw and housing.
Electronic controlled fuel pump the most according to claim 2, it is characterised in that: also it is set with connect fixing with armature on described needle-valve
The stop block connect.
Electronic controlled fuel pump the most according to claim 1, it is characterised in that: described needle-valve head is provided with step, this step
There is the stepped cylindrical face that can guide preloading spring and the step plane as preloading spring supporting surface.
Electronic controlled fuel pump the most according to claim 1, it is characterised in that: the center of described valve seat is disposed with centre bore
And spring eye, it being provided with valve block spring in described spring eye, one end of valve block spring is fixedly connected with valve block；The periphery set of valve seat
Equipped with transition connecting apparatus, this transition connecting apparatus is provided with through hole and the sealed seat surface that can match with valve block；Described
Valve seat is circumferentially evenly arranged with several inclined holes；The afterbody of described needle-valve can match with the center of valve block, when needle-valve is axial
When moving and make valve block spring-compressed, described through hole, inclined hole and centre bore can be interconnected.
Electronic controlled fuel pump the most according to claim 7, it is characterised in that: it is provided with in the described pump housing and is connected with centre bore
Compression chamber and the plunger of compression chamber volume size can be regulated.
Electronic controlled fuel pump the most according to claim 8, it is characterised in that: be provided with oil-in in the described pump housing, oil-feed is led to
Road and the pressure damping chamber that oil-in is connected with oil inlet passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610350817.0A CN106014722B (en) | 2016-05-25 | 2016-05-25 | A kind of electronic controlled fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610350817.0A CN106014722B (en) | 2016-05-25 | 2016-05-25 | A kind of electronic controlled fuel pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106014722A true CN106014722A (en) | 2016-10-12 |
| CN106014722B CN106014722B (en) | 2018-07-24 |
Family
ID=57093484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610350817.0A Expired - Fee Related CN106014722B (en) | 2016-05-25 | 2016-05-25 | A kind of electronic controlled fuel pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN106014722B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194239A (en) * | 2018-02-09 | 2018-06-22 | 南京威孚金宁有限公司 | A kind of automatically controlled VE types dispensing pump and its flameout method |
| CN108757251A (en) * | 2018-03-07 | 2018-11-06 | 宁波赛驰动力技术有限公司 | Fuel injector |
| CN114991965A (en) * | 2022-05-31 | 2022-09-02 | 哈尔滨工程大学 | Fuel oil adjusting and flow measuring device |
| CN115306612A (en) * | 2022-03-09 | 2022-11-08 | 浙江巴腾动力***有限公司 | Fuel high-pressure pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2236809A2 (en) * | 2009-03-30 | 2010-10-06 | Magneti Marelli S.p.A. | Direct-injection system fuel pump with an improved maximum-pressure valve |
| WO2012171890A1 (en) * | 2011-06-15 | 2012-12-20 | Continental Automotive Gmbh | Fuel pump |
| CN202746076U (en) * | 2012-07-18 | 2013-02-20 | 江阴林格科技有限公司 | Initial position adjusting mechanism of control valve core |
| CN104847554A (en) * | 2015-04-09 | 2015-08-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Electric control unit pump for diesel machine |
-
2016
- 2016-05-25 CN CN201610350817.0A patent/CN106014722B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2236809A2 (en) * | 2009-03-30 | 2010-10-06 | Magneti Marelli S.p.A. | Direct-injection system fuel pump with an improved maximum-pressure valve |
| WO2012171890A1 (en) * | 2011-06-15 | 2012-12-20 | Continental Automotive Gmbh | Fuel pump |
| CN202746076U (en) * | 2012-07-18 | 2013-02-20 | 江阴林格科技有限公司 | Initial position adjusting mechanism of control valve core |
| CN104847554A (en) * | 2015-04-09 | 2015-08-19 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | Electric control unit pump for diesel machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194239A (en) * | 2018-02-09 | 2018-06-22 | 南京威孚金宁有限公司 | A kind of automatically controlled VE types dispensing pump and its flameout method |
| CN108757251A (en) * | 2018-03-07 | 2018-11-06 | 宁波赛驰动力技术有限公司 | Fuel injector |
| CN108757251B (en) * | 2018-03-07 | 2023-09-22 | 宁波赛驰动力技术有限公司 | Fuel injector |
| CN115306612A (en) * | 2022-03-09 | 2022-11-08 | 浙江巴腾动力***有限公司 | Fuel high-pressure pump |
| CN114991965A (en) * | 2022-05-31 | 2022-09-02 | 哈尔滨工程大学 | Fuel oil adjusting and flow measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106014722B (en) | 2018-07-24 |
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