CN104066969B - Fuel pressure control device and use the fuel supply system of this device - Google Patents
Fuel pressure control device and use the fuel supply system of this device Download PDFInfo
- Publication number
- CN104066969B CN104066969B CN201280064918.1A CN201280064918A CN104066969B CN 104066969 B CN104066969 B CN 104066969B CN 201280064918 A CN201280064918 A CN 201280064918A CN 104066969 B CN104066969 B CN 104066969B
- Authority
- CN
- China
- Prior art keywords
- fuel
- diaphragm
- chamber
- pressure
- storage tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/02—Pumps peculiar thereto
-
- 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
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
- F02M37/0023—Valves in the fuel supply and return system
- F02M37/0029—Pressure regulator in the low pressure fuel system
-
- 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
- F02M59/12—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps having other positive-displacement pumping elements, e.g. rotary
- F02M59/14—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps having other positive-displacement pumping elements, e.g. rotary of elastic-wall type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/54—Arrangement of fuel pressure regulators
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Reciprocating Pumps (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
Being configured to include by storage tank (65): diaphragm (63), this diaphragm (63) bears fuel pressure and is shifted over；Storage tank main body (69), the space, room of this storage tank main body (69) is divided by diaphragm, and composition clips diaphragm towards the stilling chamber (77) of path one side opening and the back pressure chamber (67) of permission diaphragm displacement；First force application component (75), diaphragm is exerted a force by this first force application component (75) to stilling chamber side；Drainage element (78), when diaphragm is under pressure the fuel pressure of conditioning chamber and is displaced to more than setting, described drainage element makes the fuel of the excess pressure of stilling chamber escape into outside stilling chamber.
Description
Technical field
The present invention relates to a kind of for the fuel flowing to syringe from petrolift is carried out pressure controlled combustion
Expect pressure control device and use the fuel supply system of this device.
Background technology
In motor bike (vehicle), ejector is used to replace carburetor to spray the side of fuel
Formula is popularized.In this fashion, utilizing fuel pressure control device to the combustion from petrolift
After material carries out pressure regulation, this fuel is supplied to ejector.
Fuel pressure control device is to be installed in from being loaded into the petrolift of motor bike to ejector
Device in path, in most cases uses the structure using storage tank.
In above-mentioned fuel pressure control device, as disclosed in Patent Document 1, employing is as follows
Structure: utilize the diaphragm exerted a force by force application component that space, room is divided, clip diaphragm and by executing
Force direction side is provided with storage tank that connect, as stilling chamber with above-mentioned path, at this pressure
The turnover portion of conditioning chamber is provided with valve closing structure, along with stilling chamber becomes authorized pressure, above-mentioned closes
Valve arrangement prevents fuel from flowing into.It is to say, the fuel pressure control device disclosed in patent documentation 1
There is following structure: when fuel pressure reduces, direct fuel to, in stilling chamber, once press
Become the fuel pressure of regulation in power conditioning chamber, then closedown valve is to keep pressure, and utilizes diaphragm
Displacement proceeds pressure regulation.
Prior art literature
Patent documentation
Patent documentation 1: Japanese Patent Laid-Open 2000-265924 publication
Summary of the invention
Invent technical problem to be solved
Above-mentioned fuel pressure control device, in the case of fuel pressure rises, utilizes the displacement of diaphragm
Suppress excessive pressure.
But, motor bike also has the trend of the fuel using pressure at a relatively high.
Fuel pressure control device, when raising from the fuel pressure of petrolift, suppresses fuel pressure mistake
Big ability also uprises, but utilize the displacement of diaphragm in the structure suppressing excessive pressure, its ability
Limited by the back pressure chamber of confined space.It is additionally, since diaphragm and bears excessive burden, therefore, no
Readily and stably carry out the absorption of fuel slash.Thus, under many circumstances, can be as patent documentation 1
As disclosed, use special buffer the most simultaneously, i.e. absorb depressor (day of fluctuation
Literary composition: パ Le セ シ ョ Application ダ Application パ), supplements the absorbent properties of fluctuation.
Particularly, in the case of the fuel that employing pressure is at a relatively high, except arranging fuel pressure control
Outside device, it has to depressor is set, essentially result in maximization, or bear on cost
Burden.
The present invention makees based on above-mentioned technical problem, its object is to provide a kind of fuel pressure to control dress
Put and use the fuel supply system of this device, in above-mentioned fuel pressure control device, merely with one
Individual tank structure just can carry out in the case of bearing burdens not making diaphragm can tackling excessive pressure fully
Fuel pressure regulation, it addition, the fluctuation of fuel can be absorbed fully.
Solve the technical scheme that technical problem is used
In order to achieve the above object, the feature of the fuel pressure control device of first aspect is, storage tank bag
Including: diaphragm, this diaphragm bears fuel pressure and is shifted over；Storage tank main body, the room of this storage tank main body
Space is divided by diaphragm, and constitute clip above-mentioned diaphragm path one side opening stilling chamber and
Allow the back pressure chamber of diaphragm displacement；First force application component, diaphragm is adjusted by this first force application component to pressure
Joint side, room force；Drainage element, is under pressure the fuel pressure of conditioning chamber when diaphragm and is displaced to regulation
When being worth above, above-mentioned drainage element makes the fuel of the excess pressure of stilling chamber escape into pressure regulation
Outdoor.
In second aspect, it is characterized in that, drainage element has: fuel passage, and this fuel passage sets
It is set to connect between stilling chamber with back pressure chamber；Check-valves, this check-valves is positioned at fuel passage,
And be folded between stilling chamber and back pressure chamber；Second force application component, this second force application component will be only
Return valve to the side force contrary with the force direction of diaphragm；Open element, when diaphragm is under pressure tune
When saving the fuel pressure of room and be displaced to more than setting, check-valves is opened by above-mentioned element of opening；With
And leading-out portion, this leading-out portion will export to outside stilling chamber from the fuel of the check-valves after opening.
In a third aspect, it is characterized in that, diaphragm is located at by fuel passage and check-valves, opens element and sets
In back pressure chamber, leading-out portion is formed as making a part for back pressure chamber to open.
The feature of the fuel supply system of fourth aspect is, uses following structure: make petrolift and first
Aspect connects to the storage tank main body one of the fuel supply system of either side in the third aspect.
In the 5th aspect, it is characterized in that, use following structure: make petrolift and storage tank main body in combustion
The position one that the outlet of material pump is relative with the stilling chamber of storage tank main body connects.
Invention effect
According to the present invention, owing to becoming more than the fuel pressure of regulation when the fuel pressure of stilling chamber,
And the displacement of diaphragm reach regulation displacement time, make the fuel of extra fuel pressure escape into stilling chamber
Outward, therefore, either what kind of extra fuel pressure, can be in the situation not making diaphragm bear burdens
Under carry out pressure regulation.And, utilize the diaphragm of displacement while keeping the fuel pressure of regulation,
Absorb the fuel slash produced along with fuel injection, therefore, it is possible to fire the most simultaneously
The pressure regulation of material pressure and the absorption of fluctuation.Particularly, diaphragm can be before arriving regulation displacement
Fuel pressure in the range of, undertake the effect absorbing fuel slash fully, therefore, it is not necessary to as in the past
Additionally use buffer like that.
Thus, it is possible to utilize the single product being only made up of a tank structure, provide and will not make diaphragm
In the case of bearing burdens, there is the pressure regulation of sufficient pressure regulation performance and fluctuation absorption performance
Device, and can be to the miniaturization of fuel pressure control device and reduce into present aspect and contribute.
It addition, drainage element is by using check-valves and the structure making this check-valves open, or use
Above-mentioned check-valves is located at the structure of diaphragm and the structure opened is located at the structure of back pressure chamber, thereby,
It is able to maintain that the miniaturization of fuel pressure control device, and can realize making combustion with simple structure
The structure that material is discharged into outside stilling chamber.In addition, the back pressure chamber of diaphragm is formed as making fuel escape
The structure gone out, therefore, even if diaphragm breakage and make in the fuel such as steam contained volatile ingredient from pressure
Conditioning chamber is to back pressure chamber internal leakage, and above-mentioned volatile ingredient also will not leak in air, in safety side
Face is the most excellent.
It addition, by making fuel pressure control device and petrolift one be connected, using the teaching of the invention it is possible to provide small-sized and
There is higher pressure regulation performance and the fuel supply system of fluctuation absorption performance.And, pass through shape
Become and make fuel pressure control device and petrolift adjust with the pressure of storage tank main body in the outlet of petrolift
The structure of the position connection that joint room is relative, it is thus possible to make the negative pressure produced at the outlet of petrolift
Do not affect discharging performance, and fuel can be supplied in ejector with stable fuel pressure.
Accompanying drawing explanation
Fig. 1 is to represent to be mounted with the fuel pressure control device of an embodiment of the present invention, fuel supply
The side view of the motor bike of device.
Fig. 2 is to represent fuel pressure control device in the lump and be connected with this fuel pressure control device one
The axonometric chart of petrolift.
Fig. 3 is line A-A that represent the internal structure of above-mentioned fuel pressure control device, along Fig. 2
Sectional view.
Fig. 4 in fuel pressure control device, the pressure of regulation fuel and absorb fuel slash
The sectional view that action illustrates.
Detailed description of the invention
Hereinafter, based on Fig. 1 to Fig. 4, an embodiment of the present invention is illustrated.
Fig. 1 represents the schematic side of the motor bike of the fuel pressure control device being provided with the present invention
Figure.Arrow F in Fig. 1 represents the direction, front side of motor bike, and arrow R represents motor bike
Rear direction.
Motor bike (only has the main frame member extended along the longitudinal direction, such as main tube member 1
A part is shown).Front fork 3 is utilized to be hung with front-wheel 5 in the end of the front side of above-mentioned main tube member 1,
Similarly the end at the rear side of above-mentioned main tube member 1 utilizes swing arm arrangements 7 to be hung with trailing wheel 9.
Main tube member 1 is sequentially installed with fuel tank 11 and seat 12 from front side.Clipping supervisor
The side (right side) of component 1 is provided with brake pedal and throttle grip (Japanese: ス ト ッ ロ Le
グ リ ッ プ) etc. acceleration and deceleration system (not shown), opposite side (left side) is provided with clutch
Bar and control pedal (Japanese: シ Off ト パ ダ Le) iso-variable velocity system (not shown).
Surrounded by the descending manner pipe component 1a extended towards downside from main tube member 1 and fuel tank 11
In space (engine room), internal combustion engine is installed, e.g. so that piston 13a can reciprocating side
Formula houses the shuttle electromotor 13 of this piston 13a.Suction side connection at this electromotor 13 has short
Pipe component 15 (suction nozzle component) and throttle valve device 17, these components are constituted electromotor 13
The air suction way being connected between suction side port (not shown) with air filter (not shown).
As in figure 2 it is shown, be provided with fuel supply system 21 on short tubular member 15.This fuel supplies
Device 21 such as has following structure: using petrolift 20 and the pressure as fuel pressure control device
Actuator 61 one connects, and is assembled with the injection of electronic control type in this fuel supply system 21
Device 19 and the motor part 25 etc. that petrolift 20 is driven.
Figure 2 illustrates entirety and the internal structure (dotted portion) of fuel supply system 21,
Fig. 3 shows the cross section (Section A-A in Fig. 2) of each several part of fuel supply system 21.
As it is shown on figure 3, petrolift 20 is configured to be accommodated with the post of tubular in the pump main body 33 of tubular
The diaphragm type pumping section 49 that plug pumping section 35 and the inlet capacity to above-mentioned pumping section 35 are supplemented.Enter one
If step explanation, plunger type pumping section 35 is configured to have the sleeve 37 of tubular, with the reciprocating side of energy
Inlet valve in the inner chamber that formula is accommodated in the plunger 39 in above-mentioned sleeve 37, be assembled in above-mentioned plunger 39
41 and be assembled in the dump valve 43 of discharge side of sleeve 37.
As shown in Figures 2 and 3, motor part 25 is such as configured to built-in in motor field frame 27a
There is DC motor 27.The output unit of DC motor 27 is reciprocating via converting rotational motion into
Cam mechanism 29 (shifter) and be connected with plunger 39.Thereby, when utilizing DC motor 27
When back and forth driving plunger 39, the fuel (suction fuel) in plunger 39 is via inlet valve 41
It is directed to be formed in the compression chamber 45 of socket end, pressurized in above-mentioned compression chamber 45, and from row
Go out valve 43 to discharge.
As it is shown on figure 3, diaphragm type pumping section 49 is configured to have: be formed at the suction side of sleeve 37
Diaphragm chamber 51；The diaphragm 53 arranged in the way of this diaphragm chamber 51 is blocked；And by this diaphragm 53
Central part be fixed on the fixture 55 of end of plunger 39.Diaphragm chamber 51 by path 57a with
Inlet valve 57 connects.Thereby, when plunger 39 moves back and forth, diaphragm 51 produces amplitude, utilize by
Pump action that above-mentioned amplitude brings, in diaphragm chamber 51, sucks fuel from inlet valve 57, and
It is directed in plunger 39.It addition, ejector 19 is assembled in the connection oral area 33c being formed at pump main body 33.
As it is shown on figure 3, use the storage being such as made up of circular diaphragm 63 in pressure regulator 61
Tank 65.This storage tank 65 detachably end with the discharge side of pump main body 33 is connected.Utilize above-mentioned company
Connect, pressure regulator 61 entirety is installed in the base portion from outlet 44 to ejector 19, i.e. connects
The midway of the path 33b (path) of oral area 33a, wherein, above-mentioned outlet 44 is formed at as post
The outlet side of the dump valve 43 of plug pumping section 35 outlet side.
This storage tank 65 (pressure regulator 61) is designed, thus diaphragm 63 is not brought excessive
Burden, and fully the fuel discharged from plunger type pumping section 35 can be carried out pressure regulation, and fully
The fluctuation of the fuel that the fuel injection event with ejector 19 is produced by ground absorbs.
Hereinafter, with reference to Fig. 2 and Fig. 3, the structure of storage tank 65 is illustrated.Symbol 69 is to incite somebody to action
The storage tank main body that the mode that the end face entirety of the discharge side of pump main body 33 covers is connected with this end face, symbol
71 spaces, room being formed at the storage tank main body 69 with pump main body 33 end face in opposite directions.
Storage tank main body 69 is provided with suction connector body 74a and backflow connector body 74b,
Wherein, above-mentioned suction connector body 74a is by suction passage 57a and inlet valve 57 and diaphragm chamber
51 connections, above-mentioned backflow connector body 74b is by current return circuit 59a and reflux inlet 59 and diaphragm
Room 51 connects.Thereby, it is possible to the fuel of fuel tank 11 is directed to from suction connector body 74a
Diaphragm type pumping section 49, or make the residual fuel not sucked by plunger type pumping section 35 connect from backflow
Mouth body 74b returns in fuel tank 11.Symbol 76a, 76b table that double dot dash line in Fig. 3 represents
Show the flexible pipe being connected by suction connector body 74a and backflow connector body 74b with fuel tank 11.
E.g. concentric with outlet 44 perisporium in space, above-mentioned room 71 within storage tank main body 69 in
There is the space of tubular.In space, above-mentioned room 71, diaphragm 63 is installed, with by 71 strokes of space, above-mentioned room
It is divided into outlet 44 side and the side contrary with outlet 44 side.Utilize as the first force application element
Spring member 75 by diaphragm 63 towards outlet 44 side exert a force.Clipping diaphragm 63 by path 33b
(path) side is formed with the stilling chamber 77 towards this path 33b mono-side opening, in opposite side
It is formed with the back pressure chamber 67 allowing diaphragm 63 displacement.Spring member 75 it is provided with in back pressure chamber 67.
It is to say, offer outlet 44 at stilling chamber 77, stilling chamber 77 with from even
The path 33b connection that interface portion 33c (being assembled with the part of ejector end) extends.So towards
The midway in the path of ejector 19 is configured with the fuel turnover portion of stilling chamber 77.Thereby, in storage
In tank 65, import to, in stilling chamber 77, utilize diaphragm 63 from plunger type pumping section 35 by fuel
Displacement and accumulate the fuel pressure of regulation, and be supplied in ejector 19.
It addition, stilling chamber 77 is formed as relative with the outlet 44 of plunger type pumping section 35, upper
State relative position to be connected with plunger type pumping section 35 by storage tank 65.Utilize said structure, at pressure
In conditioning chamber 77 effectively to fuel suction, discharge time the pressure of plunger type pumping section 35 that produces
Variation absorbs, and can be supplied in ejector 19 with stable fuel pressure by fuel.
In above-mentioned storage tank 65 (storage tank main body 69), it is provided with drainage mechanism 78 (is equivalent to the present invention
Drainage element), (be appropriate to fuel when the fuel pressure of stilling chamber 77 becomes authorized pressure
Injection pressure) more than time, this drainage mechanism 78 makes the fuel of the excess pressure of stilling chamber 77
Make a concession outside stilling chamber 77.
Drainage mechanism 78 is configured to have: the combustion that will connect between stilling chamber 77 with back pressure chamber 67
Material path 79；With the rising of fuel pressure of stilling chamber 77, fuel passage 79 is closed
Regulation valve 81 (being equivalent to the check-valves of the present invention)；Fuel pressure at stilling chamber 77 becomes rule
More than fixed fuel pressure and when diaphragm 63 shifts more than setting, make the regulation valve 81 after above-mentioned closedown
That opens opens part 80 (be equivalent to the present invention opens element)；And the regulation valve 81 after opening
Fuel is exported to the leading-out portion 84 outside stilling chamber 77.
In order to pressure regulator 61 is formed as small-sized, drainage mechanism 78 is configured to fuel passage 79
And regulation valve 81 is installed on diaphragm 63, part 80 will be opened and be installed on back pressure chamber 67.It addition, leading-out portion
84 openings opened wide for example formed as a part for the sidewall making back pressure chamber 67.This leading-out portion 84 with return
Stream connector body 74b connects, and thereby, channels fuel into outside stilling chamber 77.
If further illustrating, regulation valve 81 is configured to arrange the valve of tubular at the central part of diaphragm 63
Room component 83, the fuel passage 79 stilling chamber 77 connected with back pressure chamber 67 with formation, and
This fuel passage 79 arranges valve arrangement.
That is, regulation valve 81 is configured to be provided with the ball 85 as spool, right in fuel passage 79
The spring member 87 (backflow is used: be equivalent to second force application component of the present invention) of above-mentioned ball 85 force
And contact or separate valve seat member 89 with above-mentioned ball 85, fuel passage 79 has permission fuel
From back pressure chamber 67 to the circulation of the direction of stilling chamber 77 and along with the pressure of stilling chamber 77
The function of the check-valves risen and fuel passage 79 is closed.By so by closure of check ring and make diaphragm
63 displacements, thus direct fuel in stilling chamber 77 from plunger type pumping section 35.
Open part 80 to be such as made up of the pin component 86 prominent from the bottom surface central authorities of back pressure chamber 67.Pin structure
The leading section of part 86 is such as inserted in the valve opening of valve seat member 89 in the way of being inserted freely into, deviating from
In.Outer peripheral face in the front of this pin component 86 be such as formed a plurality of effusion groove portion 86a (
Fig. 3 only illustrates with double dot dash line).This pin component 86 is set to when the combustion of stilling chamber 77
When material pressure becomes the pressure pressure of injection (be appropriate to fuel) of regulation, this pin component 86 with will
Lower surface contact (valve closing) of the ball 85 of the valve opening blocking of valve seat member 89.Thereby, pressure is adjusted
The fuel pressure of joint room 77 becomes more than the fuel pressure of regulation, when the displacement of diaphragm 63 reaches regulation
During displacement, utilize and push away ball 85 on the leading section of pin component 86 and valve opening is opened, and then by fuel
Path 79 is opened, and the fuel of excess pressure of stilling chamber 77 can be made via open groove portion 86a
Escape into outside stilling chamber 77, and escape into backflow use at this via back pressure chamber 67 and leading-out portion 84
In connector body 74b.
Utilize the structure making the fuel of above-mentioned excess pressure escape, it is possible to bear excessively not making diaphragm 63
Burden in the case of, fuel is carried out pressure regulation and to the ripple that produces along with fuel injection
Move and absorb.Above-mentioned action is shown in Fig. 4 (a)～Fig. 4 (e).
With reference to Fig. 4 (a)～Fig. 4 (e), the pressure of above-mentioned fuel is regulated and the absorption of fluctuation is carried out
Explanation.
Currently, each several part of fuel tank 11, each pumping section 35,49 and pressure regulator 61 be set as by
Fuel fills up.
In this condition, make motor part 25 action, utilize the driving force pair of above-mentioned motor part 25
Diaphragm type pumping section 49 and plunger type pumping section 35 are driven.
First, utilize the pump action being made up of the diaphragm 53 of diaphragm type pumping section 49, connect from suction
Mouth body 74a sucks the fuel of fuel tank 11, and guides to plunger type pumping section 35.Then, post is utilized
The reciprocating motion of the plunger 39 of plug pumping section 35, adds fuel in the compression chamber 45 of socket end
Pressure, makes fuel export to pressure regulator from dump valve 43 via the outlet 44 of pump main body 33 end
In 61.
Now, the residual fuel not sucked by plunger type pumping section 35 from diaphragm type pumping section 49 via return
Stream connector body 74b returns in fuel tank 11.
In pressure regulator 61, as shown in Fig. 4 (a), the fuel of outlet 44 regulates to pressure
Room 77 imports.This fuel pressure is utilized to make ball 85 contact with valve seat member 89 and by valve seat member 89
Valve opening blocking.Thereby, diaphragm 63, when keeping fuel passage 79 blocked, follows post
Plug action and shift while overcoming the elastic force of spring member 75, to fuel pressurization and store
Amass in stilling chamber 77.
Carry out shifting when diaphragm 63 and make the fuel pressure of stilling chamber 77 rise to the pressure of regulation
Time (being appropriate to the pressure of fuel injection), as shown in Fig. 4 (b), by the ball 85 of valve bore closure
Contact with the leading section of pin component 86.Additionally, when diaphragm 63 carries out shifting and making stilling chamber 77
Fuel pressure when becoming more than authorized pressure, as shown in Fig. 4 (c), utilize pin component 86 by ball
Push away on 85 and make the valve opening of valve seat member 89 open.
After the valve opening so making valve seat member 89 is opened, make the excess pressure of stilling chamber 77
Fuel imports to back pressure via groove portion 86a (the most not shown) of the outer peripheral face of pin component 86
In room 67.Then, the fuel of excess pressure connects via backflow from the leading-out portion 84 of back pressure chamber 67
Mouth body 74b returns to (stilling chamber 77 is outer) in fuel tank 11.As shown in Fig. 4 (d), profit
With the effusion of above-mentioned extra fuel pressure, the fuel of stilling chamber 77 is remained the fuel pressure of regulation
Power.
By the importing of this fuel, the effusion of extra fuel pressure are repeated, will not be to diaphragm 63
Force excessive burden, the fuel of stilling chamber 77 is remained continuously the fuel pressure of regulation.
In above process, when spraying fuel from ejector 19, as shown in Fig. 4 (e), diaphragm
63 return with the corresponding amount of injection fuel derived from stilling chamber 77 (because of stilling chamber 77
Volume reduces and causes), and persistently keep the fuel pressure of stilling chamber 77.Thereby, fully
While playing the function of diaphragm 63, absorb the fluctuation produced along with fuel injection.
So, by making the fuel of extra fuel pressure escape into outside stilling chamber 77, the most why
The extra fuel pressure of sample, can carry out pressure tune in the case of bearing excessive burden not making diaphragm 63
Joint.It is additionally, since and utilizes the diaphragm 63 carrying out shifting while keeping fuel pressure, absorb companion
The fuel slash produced along with fuel injection, therefore, it is possible to carry out fuel pressure the most simultaneously
Pressure regulation and the absorption of fluctuation.Particularly, diaphragm 63 can arrive the fuel before regulation displacement
In pressure limit, play the effect absorbing fuel slash fully, therefore, there is no need to as in the past
Additionally use special buffer.
Thus, it is possible to utilize the single product being made up of a tank structure, it is provided that bear not making diaphragm 63
Sufficient pressure regulation performance and the pressure regulator 61 of fluctuation absorption performance is played in the case of burden.
Therefore, it is possible in using the electromotor 13 of fuel of at a relatively high pressure, it is achieved fuel injection system
Miniaturization and the reduction of cost.
And, as long as making the structure that unnecessary fuel pressure escapes by fuel passage 79, regulation valve 81
(check-valves), open part 80 (opening element) and leading-out portion 84 combines, can be with simple knot
Being configured to, wherein, above-mentioned fuel passage 79 will connect between stilling chamber 77 with back pressure chamber 67,
Above-mentioned opening the regulation valve 81 that part 80 (opening element) turns off and open, above-mentioned leading-out portion 84 makes many
Remaining fuel pressure exports to stilling chamber 77 from the regulation valve 81 opened.
In addition, pressure regulator 61 is configured to fuel passage 79 and regulation valve 81 are installed on film
Sheet 63, part 80 will be opened it is installed on back pressure chamber 67 and leading-out portion 84 is formed at back pressure chamber 67, because of
This, it is possible to make full use of the space of pressure regulator 61 efficiently, it is achieved pressure regulator 61 little
Type.Particularly, back pressure chamber 67 is formed as the structure making fuel escape, accordingly, it is capable to be formed as following
Structure: even if diaphragm 63 is damaged and make volatile ingredient contained in the fuel such as steam from stilling chamber 77
To back pressure chamber 67 internal leakage, above-mentioned volatile ingredient also will not leak in air, at the aspect of safety
Also excellent.
Particularly, by the fuel supply system 21 that pressure regulator 61 is connected with petrolift 20 one it is
Small-sized, and there is higher pressure regulation performance and fluctuation absorption performance, therefore effect is big.And,
Pressure regulator 61 connects in the position that outlet 44 is relative with stilling chamber 77 with petrolift 20
Connect, accordingly, it is capable to make the negative pressure produced at the outlet 44 of petrolift 20 not affect discharging performance,
And fuel can be supplied in ejector 19 with stable fuel pressure.
It addition, the present invention is not limited to an embodiment, it is also possible in the spirit without departing from the present invention
In the range of, carry out various change and implement.
Such as, in an above-mentioned embodiment, as drainage element, use utilization at outer peripheral face
There is the drainage mechanism that the pin component in groove portion will push away on ball, but the present invention be not limited to this, it is possible to
To utilize mechanism in addition and structure to make the fuel of extra fuel pressure escape.
It addition, in an above-mentioned embodiment, list and the present invention applied in motor bike
Example, but the present invention is not limited to this, it is also possible to apply in other vehicles such as carriage.
(symbol description)
13 electromotors (internal combustion engine)
19 ejectors
20 petrolifts
21 fuel supply systems
44 outlets
61 pressure regulators (fuel pressure control device)
63 diaphragms
65 storage tanks
67 back pressure chambers
69 storage tank main bodys
75 spring members (the first force application component)
77 stilling chambers
78 drainage mechanisms (drainage element)
79 fuel passage
81 regulations valve (check-valves)
84 leading-out portions
86 pins component (opening element)
87 spring members (the second force application component).
Claims (6)
1. a fuel pressure control device, is made up of storage tank, and this storage tank can be installed in from internal combustion engine
Petrolift is in the path of ejector, it is characterised in that
Described storage tank includes:
Diaphragm, this diaphragm bears fuel pressure and is shifted over；
Storage tank main body, the space, room of this storage tank main body is divided by described diaphragm, and composition clips above-mentioned
Diaphragm towards described path one side opening stilling chamber and allow described diaphragm displacement back pressure chamber；
First force application component, described diaphragm is executed by this first force application component to described stilling chamber side
Power；
Drainage element, when described diaphragm is displaced to specify by the fuel pressure of described stilling chamber
When being worth above, described drainage element makes the fuel of the excess pressure of described stilling chamber escape into pressure
Outside conditioning chamber,
Described drainage element is configured to have:
Fuel passage, this fuel passage is arranged to connect between described stilling chamber and described back pressure chamber
Logical；
Check-valves, this check-valves is positioned at described fuel passage, and be folded in described stilling chamber with
Between described back pressure chamber；
Second force application component, this second force application component by described check-valves to the force side with described diaphragm
To contrary side force；
Open element, when described diaphragm is displaced to specify by the fuel pressure of described stilling chamber
When being worth above, described in open element described check-valves opened；And
Leading-out portion, the fuel from the described check-valves after opening is exported to pressure regulation by this leading-out portion
Outdoor.
2. fuel pressure control device as claimed in claim 1, it is characterised in that
Described check-valves has spool and contacts with this spool or separate valve seat member,
Described spool is executed by described second force application component to the side contrary with the force direction of described diaphragm
Power,
Described spool is opened by described element of opening.
3. fuel pressure control device as claimed in claim 1, it is characterised in that
Described diaphragm is located at by described fuel passage and described check-valves,
Described back pressure chamber is located at by described element of opening,
Described leading-out portion is formed as making a part for described back pressure chamber open.
4. fuel pressure control device as claimed in claim 2, it is characterised in that
Described diaphragm is located at by described fuel passage and described check-valves,
Described back pressure chamber is located at by described element of opening,
Described leading-out portion is formed as making a part for described back pressure chamber open.
5. a fuel supply system, it is characterised in that described fuel supply system includes:
Fuel pressure control device according to any one of Claims 1-4；And
Petrolift, this petrolift is connected with the described storage tank main body one of described fuel pressure control device.
6. fuel supply system as claimed in claim 5, it is characterised in that
Described petrolift and described storage tank main body are in the outlet of described petrolift and described storage tank main body
The position one that described stilling chamber is relative connects.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-288702 | 2011-12-28 | ||
| JP2011288702A JP6072411B2 (en) | 2011-12-28 | 2011-12-28 | Fuel pressure control device and fuel supply device using the same |
| PCT/JP2012/082683 WO2013099679A1 (en) | 2011-12-28 | 2012-12-17 | Fuel pressure control device and fuel supply apparatus using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104066969A CN104066969A (en) | 2014-09-24 |
| CN104066969B true CN104066969B (en) | 2016-09-14 |
Family
ID=48697171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280064918.1A Active CN104066969B (en) | 2011-12-28 | 2012-12-17 | Fuel pressure control device and use the fuel supply system of this device |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP6072411B2 (en) |
| CN (1) | CN104066969B (en) |
| BR (1) | BR112014015888A8 (en) |
| MY (1) | MY167936A (en) |
| PH (1) | PH12014501452A1 (en) |
| WO (1) | WO2013099679A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6545006B2 (en) * | 2015-06-08 | 2019-07-17 | 株式会社ミクニ | Fuel pump control device and control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1134181A (en) * | 1994-08-27 | 1996-10-23 | 罗伯特·博施有限公司 | Pressure control valve |
| JP2001099068A (en) * | 1999-10-01 | 2001-04-10 | Keihin Corp | Vacuum type fuel supply device |
| JP2007146669A (en) * | 2005-11-24 | 2007-06-14 | Keihin Corp | Fuel supply pressure adjusting device |
| JP2011080389A (en) * | 2009-10-06 | 2011-04-21 | Hitachi Automotive Systems Ltd | High pressure fuel supply pump |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1532215A (en) * | 1974-11-16 | 1978-11-15 | Lucas Electrical Ltd | Pressure regulating valve |
| JPH0914097A (en) * | 1995-06-29 | 1997-01-14 | Aisin Seiki Co Ltd | Fuel pressure controller |
| DE10046736B4 (en) * | 2000-09-21 | 2006-04-13 | Siemens Ag | pressure regulator |
-
2011
- 2011-12-28 JP JP2011288702A patent/JP6072411B2/en active Active
-
2012
- 2012-12-17 CN CN201280064918.1A patent/CN104066969B/en active Active
- 2012-12-17 BR BR112014015888A patent/BR112014015888A8/en not_active IP Right Cessation
- 2012-12-17 MY MYPI2014701622A patent/MY167936A/en unknown
- 2012-12-17 WO PCT/JP2012/082683 patent/WO2013099679A1/en active Application Filing
-
2014
- 2014-06-23 PH PH12014501452A patent/PH12014501452A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1134181A (en) * | 1994-08-27 | 1996-10-23 | 罗伯特·博施有限公司 | Pressure control valve |
| JP2001099068A (en) * | 1999-10-01 | 2001-04-10 | Keihin Corp | Vacuum type fuel supply device |
| JP2007146669A (en) * | 2005-11-24 | 2007-06-14 | Keihin Corp | Fuel supply pressure adjusting device |
| JP2011080389A (en) * | 2009-10-06 | 2011-04-21 | Hitachi Automotive Systems Ltd | High pressure fuel supply pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013136990A (en) | 2013-07-11 |
| JP6072411B2 (en) | 2017-02-01 |
| BR112014015888A8 (en) | 2017-07-04 |
| CN104066969A (en) | 2014-09-24 |
| BR112014015888A2 (en) | 2017-06-13 |
| WO2013099679A1 (en) | 2013-07-04 |
| PH12014501452A1 (en) | 2014-10-08 |
| MY167936A (en) | 2018-10-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107110072A (en) | Evaporated fuel treating apparatus | |
| CN103362696B (en) | Modular design for fuel vapor purging in boosted engines | |
| US8474439B2 (en) | Fuel vapor processors | |
| US5623911A (en) | Fuel vapor treating apparatus | |
| US20080236550A1 (en) | Vehicle fuel supply device | |
| CN108138702A (en) | Evaporated fuel treating apparatus | |
| KR20140040080A (en) | Internal combustion engine with improved tank cleaning | |
| JP6327067B2 (en) | Fuel supply device | |
| KR20110082707A (en) | Fuel pump module | |
| JP5920324B2 (en) | Fuel storage device | |
| CN105705766A (en) | Fuel supply device | |
| CN104508289A (en) | Fuel vapor processing apparatus | |
| CN103573508B (en) | The fuel supplying device of internal-combustion engine | |
| CN110100086B (en) | Purge injector assembly for an engine | |
| CN104066969B (en) | Fuel pressure control device and use the fuel supply system of this device | |
| JP5983365B2 (en) | Evaporative fuel purge device | |
| CN101857039B (en) | Linear shock absorber for railway vehicles | |
| CN1311156C (en) | Fuel feeder | |
| CN101963116B (en) | Fuel supply device | |
| JP2014227972A (en) | Evaporative fuel purge device | |
| CN102016286B (en) | Compact injection device having a flat armature air adjuster | |
| KR102463193B1 (en) | Purge control solenoid valve | |
| CN113818974B (en) | Electric control component of fuel system and fuel system control method | |
| US8066030B2 (en) | Fuel conveying device | |
| CN109958552B (en) | Fuel steam desorption system and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |