CN104066969A - Fuel pressure control device and fuel supply apparatus using same - Google Patents
Fuel pressure control device and fuel supply apparatus using same Download PDFInfo
- Publication number
- CN104066969A CN104066969A CN201280064918.1A CN201280064918A CN104066969A CN 104066969 A CN104066969 A CN 104066969A CN 201280064918 A CN201280064918 A CN 201280064918A CN 104066969 A CN104066969 A CN 104066969A
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- Prior art keywords
- fuel
- diaphragm
- chamber
- pressure
- storage tank
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—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
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- 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
An accumulator (65) is configured to be provided with: a diaphragm (63) which is displaced by receiving fuel pressure; an accumulator body (69) in which a chamber space is partitioned by the diaphragm to constitute a pressure adjustment chamber (77) that is open to the path side and a back pressure chamber (67) that permits the displacement of the diaphragm with the diaphragm interposed therebetween; a first biasing member (75) which biases the diaphragm to the pressure adjustment chamber side; and a release means (78) which, when the diaphragm is displaced by a predetermined value or more by receiving the fuel pressure in the pressure adjustment chamber, releases fuel corresponding to the excess pressure in the pressure adjustment chamber to the outside of the pressure adjustment chamber.
Description
Technical field
The present invention relates to a kind of for the fuel that flows to injector from petrolift being carried out to pressure controlled fuel pressure control device and using the fuel supplying device of this device.
Background technique
In motor bike (vehicle), the mode that replaces Carburetor to carry out burner oil with sparger is universal.In this mode, utilizing fuel pressure control device to carry out, after pressure adjusting, this fuel being supplied with to sparger to the fuel from petrolift.
Fuel pressure control device is to be installed in petrolift from being loaded into motor bike to the device the path of sparger, in most cases adopts the structure that uses storage tank.
In above-mentioned fuel pressure control device, as disclosed in Patent Document 1, adopt following structure: utilize and divided space, chamber by the diaphragm of the force application component application of force, clipping diaphragm by application of force direction one side be provided be communicated with above-mentioned path, as the storage tank of stilling chamber, be provided with and close valve arrangement in the turnover portion of this stilling chamber, along with stilling chamber becomes authorized pressure, the above-mentioned valve arrangement that closes prevents fuel from flowing into.That is to say, the disclosed fuel pressure control device of patent documentation 1 has following structure: in the time that fuel pressure reduces, fuel is imported in stilling chamber, once become the fuel pressure of regulation in stilling chamber, throttle down to be to keep pressure, and utilizes the displacement of diaphragm to proceed pressure to regulate.
Prior art document
Patent documentation
Patent documentation 1: Japanese Patent Laid-Open 2000-265924 communique
Summary of the invention
Invent technical problem to be solved
Above-mentioned fuel pressure control device, in the situation that fuel pressure rises, utilizes the displacement of diaphragm to suppress excessive pressure.
But, in motor bike, also there is the trend that adopts the fuel that pressure is quite high.
Fuel pressure control device, in the time that the fuel pressure from petrolift raises, suppresses the excessive ability of fuel pressure and also uprises, but suppress in the structure of excessive pressure in the displacement that utilizes diaphragm, and its ability is subject to the back pressure chamber restriction of confined space.And, because diaphragm bears excessive burden, therefore, be not easy stably to carry out the absorption of fuel fluctuation.Thereby, under many circumstances, can be disclosed as patent documentation 1, use in addition special buffer simultaneously, absorb the fluctuation buffer (Japanese: パ ル セ ー シ ョ Application ダ Application パ) fluctuating, supplement the absorbability of fluctuation.
Particularly, in the case of adopting the fuel that pressure is quite high, except fuel pressure control device is set, have to arrange fluctuation buffer, cause in fact maximizing, or bear the burden on cost.
The present invention is based on above-mentioned technical problem and do, the fuel supplying device that its object is to provide a kind of fuel pressure control device and uses this device, in above-mentioned fuel pressure control device, the pressure that only utilizes a tank structure just can carry out the fuel that can tackle fully excessive pressure in the situation that not making diaphragm bear burdens regulates, in addition, can absorb fully the fluctuation of fuel.
The technological scheme that technical solution problem adopts
In order to achieve the above object, the feature of the fuel pressure control device of first aspect is that storage tank comprises: diaphragm, and this diaphragm bears fuel pressure and is shifted; Storage tank main body, the space, chamber of this storage tank main body is divided by diaphragm, and formation clips the back pressure chamber of above-mentioned diaphragm in the stilling chamber of path one side opening and the displacement of permission diaphragm; The first force application component, this first force application component by diaphragm to the stilling chamber side application of force; Drainage element, when diaphragm be under pressure conditioning chamber fuel pressure and be displaced to specified value when above, above-mentioned drainage element escapes into outside stilling chamber the fuel of the unnecessary pressure of stilling chamber.
In second aspect, it is characterized in that, drainage element has: fuel passage, this fuel passage is arranged between stilling chamber and back pressure chamber, to be communicated with; Safety check, this safety check is positioned at fuel passage, and is folded between stilling chamber and back pressure chamber; The second force application component, this second force application component by safety check to the side application of force of the application of force opposite direction of diaphragm; Open element, when diaphragm be under pressure conditioning chamber fuel pressure and be displaced to specified value when above, the above-mentioned element of opening is opened safety check; And leading-out portion, this leading-out portion exports to the fuel of the safety check from after opening outside stilling chamber.
In the third aspect, it is characterized in that, fuel passage and safety check are located at diaphragm, open element and are located at back pressure chamber, and leading-out portion is formed as making a part for back pressure chamber to open.
The feature of the fuel supplying device of fourth aspect is to adopt following structure: petrolift and first aspect to the storage tank main body one of the fuel supplying device of either side in the third aspect is connected.
In aspect the 5th, it is characterized in that, adopt following structure: petrolift is connected in the exhaust port of the petrolift position one relative with the stilling chamber of storage tank main body with storage tank main body.
Invention effect
According to the present invention, more than becoming the fuel pressure of regulation when the fuel pressure of stilling chamber, and when the displacement of diaphragm reaches regulation displacement, the fuel of unnecessary fuel pressure is escaped into outside stilling chamber, therefore, no matter be what kind of unnecessary fuel pressure, can in the situation that not making diaphragm bear burdens, carry out pressure adjusting.And, utilize the diaphragm being shifted in keeping the fuel pressure specifying, absorb the fuel fluctuation that is accompanied by fuel injection and produce, therefore, can stably carry out the pressure adjusting of fuel pressure and the absorption of fluctuating simultaneously.Particularly, diaphragm can the fuel pressure before arriving regulation displacement within the scope of, bear fully the effect that absorbs fuel fluctuation, therefore, needn't be as in the past other use buffer.
Thereby, can utilize the single product that only formed by a tank structure, provide in the situation that can not making diaphragm bear burdens, there is the pressure regulator of sufficient pressure adjusting function and fluctuation absorption performance, and can and reduce costs aspect to the miniaturization of fuel pressure control device and contribute.
In addition, drainage element is by the structure that adopts safety check and this safety check is opened, or adopt the structure of above-mentioned safety check being located to the structure of diaphragm and the structure of opening being located to back pressure chamber, by this, can maintain the miniaturization of fuel pressure control device, and can realize and make fuel be discharged into the structure outside stilling chamber with simple structure.In addition, the structure that the back pressure chamber of diaphragm is formed as making fuel to overflow, therefore, even diaphragm breakage and make volatile ingredient contained in the fuel such as steam from stilling chamber to back pressure chamber internal leakage, above-mentioned volatile ingredient can not leak in atmosphere yet, excellent aspect Security yet.
In addition, by fuel pressure control device is connected with petrolift one, can provides small-sized and there is the fuel supplying device of higher pressure adjusting function and fluctuation absorption performance.And, by the structure that is formed as fuel pressure control device is connected in the exhaust port of the petrolift position relative with the stilling chamber of storage tank main body with petrolift, thereby can make the negative pressure producing at the exhaust port place of petrolift not affect discharging performance, and fuel can be supplied in sparger with stable fuel pressure.
Brief description of the drawings
Fig. 1 is the side view of the motor bike of the fuel pressure control device that represents to be mounted with an embodiment of the present invention, fuel supplying device.
Fig. 2 is the stereogram that represents in the lump fuel pressure control device and the petrolift being connected with this fuel pressure control device one.
Fig. 3 be represent above-mentioned fuel pressure control device internal structure, along the A in Fig. 2? the sectional view of A line.
Fig. 4 in fuel pressure control device, the pressure of fuel metering and absorb the sectional view that the action of fuel fluctuation describes.
Embodiment
Below, based on Fig. 1 to Fig. 4, an embodiment of the present invention is described.
Fig. 1 represents the diagrammatic side view of the motor bike that fuel pressure control device of the present invention is installed.The front side that arrow F in Fig. 1 represents motor bike to, arrow R represents the rear direction of motor bike.
Motor bike has the main frame member of extending along fore-and-aft direction, for example, be responsible for member 1 (part is only shown).Utilize front fork 3 to be hung with front-wheel 5 in the end of the front side of above-mentioned supervisor's member 1, similarly utilize swing arm member 7 to be hung with trailing wheel 9 in the end of the rear side of above-mentioned supervisor's member 1.
On supervisor's member 1, fuel tank 11 and seat 12 are installed successively from front side.Be provided with the acceleration and deceleration system (not shown) such as brake petal and throttle grip (Japanese: ス ト ッ ロ Le グ リ ッ プ) in a side (right side) that clips supervisor's member 1, be provided with clutch shaft and control pedal (Japanese: シ Off ト パ ダ Le) iso-variable velocity system (not shown) in a contrary side (left side).
In the descending manner pipe component 1a by extending towards downside from supervisor's member 1 and the space (engine compartment) that surrounds of fuel tank 11, internal-combustion engine being installed, for example, is so that the shuttle motor 13 that piston 13a can reciprocating mode accommodates this piston 13a.Be connected with short tube member 15 (sucking pipe member) and throttle valve device 17 in the suction side of this motor 13, these members form the air suction way being connected between the suction side port (not shown) of motor 13 and air filter (not shown).
As shown in Figure 2, on short tube member 15, be provided with fuel supplying device 21.This fuel supplying device 21 for example has following structure: petrolift 20 is connected with pressure regulator 61 one as fuel pressure control device, and in this fuel supplying device 21, is assembled with the sparger 19 of electronic control type and motor part 25 that petrolift 20 is driven etc.
Figure 2 illustrates entirety and the internal structure (dotted portion) of fuel supplying device 21, figure 3 illustrates the cross section (A in Fig. 2 of the each several part of fuel supplying device 21? A cross section).
As shown in Figure 3, petrolift 20 is configured to and in the pump main body 33 of tubular, is accommodated with the ram type pump portion 35 of tubular and the inlet capacity of said pump portion 35 is carried out to supplementary diaphragm type pump portion 49.Further illustrate, ram type pump portion 35 be configured to there is the sleeve 37 of tubular, can reciprocating mode to be accommodated in plunger 39 in above-mentioned sleeve 37, be assembled in the suction valve 41 in the inner chamber of above-mentioned plunger 39 and be assembled in the expulsion valve 43 of the discharge side of sleeve 37.
As shown in Figures 2 and 3, motor part 25 is for example configured to and in motor field frame 27a, is built-in with DC motor 27.The carry-out part of DC motor 27 is converted to reciprocating cam mechanism 29 (switching mechanism) via rotatablely moving and is connected with plunger 39.By this, in the time utilizing DC motor 27 back and forth to drive plunger 39, fuel (suction fuel) in plunger 39 is directed to via suction valve 41 in the pressurized chamber 45 that is formed at socket end, interior pressurized in above-mentioned pressurized chamber 45, and discharges from expulsion valve 43.
As shown in Figure 3, diaphragm type pump portion 49 is configured to and has: the diaphragm chamber 51 that is formed on the suction side of sleeve 37; The diaphragm 53 arranging in the mode that this diaphragm chamber 51 is stopped up; And the central part of this diaphragm 53 is fixed on to the fixed block 55 of the end of plunger 39.Diaphragm chamber 51 is communicated with suction valve 57 by path 57a.By this, in the time of plunger 39 to-and-fro motion, diaphragm 51 produces amplitude, utilizes pump that brought by above-mentioned amplitude, in diaphragm chamber 51 to move, and fuel is sucked from suction valve 57, and be directed in plunger 39.In addition, sparger 19 is assembled in the connection oral area 33c that is formed at pump main body 33.
As shown in Figure 3, in pressure regulator 61, adopt the storage tank 65 for example being formed by circular diaphragm 63.This storage tank 65 can load and unload ground and be connected with the end of the discharge side of pump main body 33.Utilize above-mentioned connection, by pressure regulator 61 entirety be installed in base portion from exhaust port 44 to sparger 19, the path 33b (path) that connects oral area 33a midway, wherein, above-mentioned exhaust port 44 is formed on the outlet side as the expulsion valve 43 of ram type pump portion 35 exhaust ends.
This storage tank 65 (pressure regulator 61) is designed, thereby diaphragm 63 is not brought to excessive burden, and can carry out pressure adjusting to the fuel of discharging from ram type pump portion 35 fully, and the fluctuation of the fuel producing following the fuel injection event of sparger 19 fully absorbs.
Below, with reference to Fig. 2 and Fig. 3, the structure of storage tank 65 is described.Symbol 69 is storage tank main bodys that the mode so that the end face entirety of the discharge side of pump main body 33 is covered is connected with this end face, and symbol 71 is to be formed at and the space, chamber of the storage tank main body 69 of pump main body 33 end face in opposite directions.
In storage tank main body 69, be provided with and suck with connection mouth body 74a and reflux with connection mouth body 74b, wherein, above-mentioned suction is communicated with diaphragm chamber 51 by sucking path 57a and suction valve 57 with connection mouth body 74a, and above-mentioned backflow is communicated with diaphragm chamber 51 by current return circuit 59a and reflux valve 59 with connection mouth body 74b.By this, the fuel of fuel tank 11 can be directed to diaphragm type pump portion 49 from suction with connection mouth body 74a, or the residual fuel not sucked by ram type pump portion 35 is turned back in fuel tank 11 from backflow connection mouth body 74b.Symbol 76a, the 76b that double dot dash line in Fig. 3 represents represents to suck with connection mouth body 74a and the flexible pipe being connected with fuel tank 11 with connection mouth body 74b that refluxes.
The space, above-mentioned chamber 71 of storage tank main body 69 inside is to be for example with the concentric perisporium of exhaust port 44 space that has tubular.In space, above-mentioned chamber 71, diaphragm 63 is installed, space, above-mentioned chamber 71 is divided into exhaust port 44 1 sides and a side contrary with exhaust port 44 sides.Utilize as the spring component 75 of the first force application element diaphragm 63 towards the exhaust port 44 side application of forces.Be formed with towards the stilling chamber 77 of this path 33b mono-side opening by path 33b (path) side clipping diaphragm 63, be formed with the back pressure chamber 67 that allows diaphragm 63 to be shifted in a contrary side.In back pressure chamber 67, be provided with spring component 75.
That is to say, offer exhaust port 44 at stilling chamber 77, stilling chamber 77 and the path 33b connection of extending from being connected oral area 33c (being assembled with the part of sparger end).Like this in the fuel turnover portion that disposes stilling chamber 77 midway in the path towards sparger 18.By this, in storage tank 65, fuel is imported in stilling chamber 77 from ram type pump portion 35, utilize the displacement of diaphragm 63 and accumulate the fuel pressure of regulation, and be supplied in sparger 19.
In addition, stilling chamber 77 is formed as relative with the exhaust port 44 of ram type pump portion 35, in above-mentioned relative position, storage tank 65 is connected with ram type pump portion 35.Utilize said structure, in stilling chamber 77, effectively the pressure oscillation of the ram type pump portion 35 producing in the suction of fuel, while discharging is absorbed, and fuel can be supplied in sparger 19 with stable fuel pressure.
In above-mentioned storage tank 65 (storage tank main body 69), be provided with drainage mechanism 78 (being equivalent to drainage element of the present invention), when the fuel pressure of stilling chamber 77 becomes authorized pressure (being applicable to carrying out the pressure of fuel injection) when above, this drainage mechanism 78 makes a concession outside stilling chamber 77 fuel of the unnecessary pressure of stilling chamber 77.
Drainage mechanism 78 is configured to be had: by the fuel passage 79 being communicated with between stilling chamber 77 and back pressure chamber 67; Follow the rising of fuel pressure of stilling chamber 77 and modulating valve 81 (being equivalent to safety check of the present invention) that fuel passage 79 is closed; More than the fuel pressure of stilling chamber 77 becomes the fuel pressure of regulation and diaphragm 63 be shifted specified value when above, what make that modulating valve 81 after above-mentioned cutting out opens opens part 80 (being equivalent to the element of opening of the present invention); And fuel is exported to the leading-out portion 84 outside stilling chamber 77 by modulating valve 81 from opening.
Small-sized for pressure regulator 61 is formed as, drainage mechanism 78 is configured to fuel passage 79 and modulating valve 81 is installed on to diaphragm 73, will open part 80 and be installed on back pressure chamber 67.In addition, leading-out portion 84 is for example formed as the unlimited opening of a part of the sidewall that makes back pressure chamber 67.This leading-out portion 84 is communicated with connection mouth body 74b with backflow, by this, fuel is directed to outside stilling chamber 77.
Further illustrate, modulating valve 81 is configured to the valve chamber member 83 that tubular is set at the central part of diaphragm 63, to form the fuel passage 79 that stilling chamber 77 is communicated with back pressure chamber 67, and in this fuel passage 79, valve arrangement is set.
; modulating valve 81 is configured to and in fuel passage 79, is provided with as the ball 85 of spool, the spring component 87 (reflux and use: be equivalent to the second force application component of the present invention) to above-mentioned ball 85 application of forces and the valve seat member 89 that contacts or separate with above-mentioned ball 85, and fuel passage 79 has the function of the safety check that allows the direction of fuel from back pressure chamber 67 to stilling chamber 77 to circulate and along with the pressure rise of stilling chamber 77, fuel passage 79 to be closed.By like this by closure of check ring and diaphragm 63 is shifted, thereby from ram type pump portion 35, fuel is imported in stilling chamber 77.
Opening part 80 is for example made up of the outstanding pin member 86 of bottom surface central authorities from back pressure chamber 67.The front end of pin member 86 is for example inserted in the valve opening of valve seat member 89 in the mode that can freely insert, deviate from.For example be formed with the slot part 86a (only illustrating with double dot dash line) of many effusion use in Fig. 3 at the outer circumferential face of the forward end of this pin member 86.This pin member 86 is set in the time that the fuel pressure of stilling chamber 77 becomes the pressure (being applicable to carrying out the pressure of fuel injection) of regulation, and this pin member 86 contacts (closing valve) with the lower surface of the ball 85 that the valve opening of valve seat member 89 is stopped up.By this, more than the fuel pressure of stilling chamber 77 becomes the fuel pressure of regulation, in the time that the displacement of diaphragm 63 reaches regulation displacement, on the front end of utilization pin member 86, push away ball 85 and valve opening is opened, and then fuel passage 79 is opened, can make the fuel of the unnecessary pressure of stilling chamber 77 escape into outside stilling chamber 77 via open slot part 86a, and escape into via back pressure chamber 67 and leading-out portion 84 at this in backflow connection mouth body 74b.
The structure that utilization is overflowed the fuel of above-mentioned unnecessary pressure, can be in the case of not making diaphragm 63 bear excessive burden, and fuel is carried out to pressure adjusting and to being accompanied by that fuel sprays and the fluctuation that produces absorbs.Above-mentioned action is shown in Fig. 4 (a)～Fig. 4 (e).
With reference to Fig. 4 (a)～Fig. 4 (e), the pressure adjusting to above-mentioned fuel and the absorption of fluctuation describe.
Current, the each several part of fuel tank 11, each pump portion 35,49 and pressure regulator 61 is set as being filled up by fuel.
Under this state, motor part 25 is moved, utilize the driving force of above-mentioned motor part 25 to drive diaphragm type pump portion 49 and ram type pump portion 35.
First, utilize the pump being formed by the diaphragm 53 of diaphragm type pump portion 49 to move, from sucking the fuel with connection mouth body 74a suction fuel tank 11, and guide to ram type pump portion 35.Then, utilize the to-and-fro motion of the plunger 39 of ram type pump portion 35, in the pressurized chamber 45 of socket end, fuel is pressurizeed, fuel is exported to pressure regulator 61 via the exhaust port 44 of pump main body 33 ends from expulsion valve 43.
Now, the residual fuel not sucked by ram type pump portion 35 turns back in fuel tank 11 with connection mouth body 74b via backflow from diaphragm type pump portion 49.
In pressure regulator 61, as shown in Fig. 4 (a), the fuel of exhaust port 44 imports to stilling chamber 77.Utilize this fuel pressure that ball 85 is contacted with valve seat member 89 and the valve opening of valve seat member 89 is stopped up.By this, diaphragm 63 is keeping under the blocked state of fuel passage 79, follows plunger action and is shifted in the elastic force that overcomes spring component 75, to fuel pressurization and accumulate in stilling chamber 77.
When diaphragm 63 is shifted and while making the fuel pressure of stilling chamber 77 rise to the pressure (being applicable to carrying out the pressure of fuel injection) of regulation, as shown in Fig. 4 (b), the ball 85 of valve opening sealing is contacted with the front end of pin member 86.In addition,, when diaphragm 63 is shifted and makes the fuel pressure of stilling chamber 77 become authorized pressure when above, as shown in Fig. 4 (c), utilize pin member 86 ball 85 is above pushed away and the valve opening of valve seat member 89 is opened.
After the valve opening that makes like this valve seat member 89 is opened, the fuel of the unnecessary pressure of stilling chamber 77 is imported in back pressure chamber 67 via the slot part 86a (not shown in Fig. 4) of the outer circumferential face of pin member 86.Then, the fuel of unnecessary pressure turns back in fuel tank 11 (stilling chamber 77) with connection mouth body 74b via backflow from the leading-out portion 84 of back pressure chamber 67.As shown in Fig. 4 (d), utilize the effusion of above-mentioned unnecessary fuel pressure, the fuel of stilling chamber 77 is remained to the fuel pressure of regulation.
By repeatedly carrying out the importing of this fuel, the effusion of unnecessary fuel pressure, can not force excessive burden ground to diaphragm 73, the fuel of stilling chamber 77 is continued to remain to the fuel pressure of regulation.
In said process, when from sparger 19 burner oil, as shown in Fig. 4 (e), diaphragm 63 returns with the burner oil of deriving from stilling chamber 77 measures (causing because the volume of stilling chamber 77 reduces) accordingly, and continues to keep the fuel pressure of stilling chamber 77.By this, in bringing into play fully the function of diaphragm 63, absorb the fluctuation that is accompanied by fuel injection and produce.
Like this, by the fuel of unnecessary fuel pressure is escaped into outside stilling chamber 77, no matter be what kind of unnecessary fuel pressure, can in the situation that not making diaphragm 63 bear excessive burden, carry out pressure adjusting.And, due to the diaphragm 63 that utilization is shifted in keeping fuel pressure, absorb the fuel fluctuation that is accompanied by fuel injection and produce, therefore, can stably carry out the pressure adjusting of fuel pressure and the absorption of fluctuation simultaneously.Particularly, diaphragm 63 can, within the scope of the fuel pressure arriving before specifying displacement, play the effect that absorbs fuel fluctuation fully, therefore, does not need the special buffer of other use as in the past.
Thereby, can utilize the single product that formed by a tank structure, the pressure regulator 61 of bringing into play sufficient pressure adjusting function and fluctuation absorption performance in the situation that not making diaphragm 63 bear burdens is provided.Therefore, can, in the motor 13 of fuel that uses quite high pressure, realize the miniaturization of fuel injection system and the reduction of cost.
And, make the structure that unnecessary fuel pressure is overflowed need only fuel passage 79, modulating valve 81 (safety check), open part 80 (opening element) and leading-out portion 74 combinations, can form with simple structure, wherein, above-mentioned fuel passage 79 will be communicated with between stilling chamber 77 and back pressure chamber 67, the above-mentioned part 80 (opening element) of opening is opened the modulating valve 81 of closing, and above-mentioned leading-out portion 84 makes unnecessary fuel pressure export to stilling chamber 77 from the modulating valve 81 of opening.
In addition, pressure regulator 61 is configured to fuel passage 79 and modulating valve 81 is installed on to diaphragm 63, will opens part 80 and be installed on back pressure chamber 67 and leading-out portion 84 is formed to back pressure chamber 67, therefore, can make full use of efficiently the space of pressure regulator 61, realize the miniaturization of pressure regulator 61.Particularly, back pressure chamber 67 is formed as the structure that fuel is overflowed, therefore, make volatile ingredient contained in the fuel such as steam from stilling chamber 77 to back pressure chamber 67 internal leakages even if can be formed as diaphragm 63 breakages, above-mentioned volatile ingredient can not leak in atmosphere yet, yet excellent structure aspect Security.
Particularly, the fuel supplying device 21 that pressure regulator 61 is connected with petrolift 20 one is small-sized, and has higher pressure adjusting function and fluctuation absorption performance, and therefore effect is large.And, pressure regulator 61 is connected in discharge chamber 44 position relative with stilling chamber 77 with petrolift 20, therefore, can make the negative pressure producing at exhaust port 44 places of petrolift 20 not affect discharging performance, and fuel can be supplied in sparger 19 with stable fuel pressure.
In addition, the present invention is not limited to a mode of execution, also can be without departing from the spirit of the invention within the scope, and carry out various changes and implement.
For example, in an above-mentioned mode of execution, as drainage element, employing be to utilize at outer circumferential face to there is the drainage mechanism that the pin member of slot part above pushes away ball, but the present invention is not limited to this, also can utilize mechanism and structure in addition that the fuel of unnecessary fuel pressure is overflowed.
In addition, in an above-mentioned mode of execution, enumerated the present invention is applied in to the example in motor bike, but the present invention is not limited to this, also can be applied in other vehicles such as four-wheel wagon.
(symbol description)
13 motors (internal-combustion engine)
19 spargers
20 petrolifts
21 fuel supplying devices
44 exhaust ports
61 pressure regulators (fuel pressure control device)
63 diaphragms
65 storage tanks
67 back pressure chambers
69 storage tank main bodys
75 spring components (the first force application component)
77 stilling chambers
78 drainage mechanisms (drainage element)
79 fuel passage
81 modulating valve (safety check)
84 leading-out portions
86 pin members (opening element)
87 spring components (the second force application component).
Claims (5)
1. a fuel pressure control device, is made up of storage tank, and this storage tank can be installed in from the petrolift of internal-combustion engine to the path of sparger, it is characterized in that,
Described storage tank comprises:
Diaphragm, this diaphragm bears fuel pressure and is shifted;
Storage tank main body, the space, chamber of this storage tank main body is divided by described diaphragm, and formation clips the back pressure chamber of above-mentioned diaphragm towards the stilling chamber of described path one side opening and the described diaphragm displacement of permission;
The first force application component, this first force application component by described diaphragm to the described stilling chamber one side application of force;
Drainage element, when described diaphragm is subject to the fuel pressure of described stilling chamber and is displaced to specified value when above, described drainage element escapes into outside stilling chamber the fuel of the unnecessary pressure of described stilling chamber.
2. fuel pressure control device as claimed in claim 1, is characterized in that,
Described drainage element is configured to be had:
Fuel passage, this fuel passage is arranged between described stilling chamber and described back pressure chamber, to be communicated with;
Safety check, this safety check is positioned at described fuel passage, and is folded between described stilling chamber and described back pressure chamber;
The second force application component, this second force application component by described safety check to the side application of force of the application of force opposite direction of described diaphragm;
Open element, when described diaphragm is subject to the fuel pressure of described stilling chamber and is displaced to specified value when above, described in open element described safety check opened; And
Leading-out portion, this leading-out portion exports to the fuel of the described safety check from after opening outside stilling chamber.
3. fuel pressure control device as claimed in claim 2, is characterized in that,
Described fuel passage and described safety check are located at described diaphragm,
The described element of opening is located at described back pressure chamber,
Described leading-out portion is formed as making a part for described back pressure chamber to open.
4. a fuel supplying device, is characterized in that, described fuel supplying device comprises:
Fuel pressure control device in claims 1 to 3 described in any one; And
Petrolift, this petrolift is connected with the described storage tank main body one of described fuel pressure control device.
5. fuel supplying device as claimed in claim 4, is characterized in that,
Described petrolift is connected in the exhaust port of the described petrolift position one relative with the described stilling chamber of described storage tank main body with described storage tank main body.
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 true CN104066969A (en) | 2014-09-24 |
| CN104066969B 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 (5)
| 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 |
| US20030056831A1 (en) * | 2000-09-21 | 2003-03-27 | Karl Eck | Pressure regulator |
| 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 (2)
| 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 |
-
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 (5)
| 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 |
| US20030056831A1 (en) * | 2000-09-21 | 2003-03-27 | Karl Eck | Pressure regulator |
| 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 |
| CN104066969B (en) | 2016-09-14 |
| BR112014015888A2 (en) | 2017-06-13 |
| WO2013099679A1 (en) | 2013-07-04 |
| PH12014501452A1 (en) | 2014-10-08 |
| MY167936A (en) | 2018-10-04 |
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