CN1629469A - Pump horizontally placed fuel pump assembly - Google Patents
Pump horizontally placed fuel pump assembly Download PDFInfo
- Publication number
- CN1629469A CN1629469A CN 200410101343 CN200410101343A CN1629469A CN 1629469 A CN1629469 A CN 1629469A CN 200410101343 CN200410101343 CN 200410101343 CN 200410101343 A CN200410101343 A CN 200410101343A CN 1629469 A CN1629469 A CN 1629469A
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- fuel
- pump
- oil
- valve
- fuel pump
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- 239000000446 fuel Substances 0.000 title claims abstract description 209
- 239000002828 fuel tank Substances 0.000 claims abstract description 30
- 239000000295 fuel oil Substances 0.000 claims description 66
- 239000003921 oil Substances 0.000 claims description 42
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Images
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- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
- Details Of Reciprocating Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provided a horizontally arranged pump fuel pump unit in which a fuel pressure holding valve is provided in a place different from a main body of a fuel pump unit and arranged vertically while the fuel pump unit is horizontally arranged inside a fuel tank and used. A fuel pump case part 3 is provided with the fuel pump unit 12 arranged horizontally on a bottom part of the fuel tank 2 and a pump case 10 in which a pump connection part 14 of a fuel passage 16 is connected to a discharge port 13 of the fuel pump unit 12 and a filter connection part 25 is connected to a fuel filter part 20. The check valve 5 is provided inside the pump connection part 14 in the vertical direction of the pump case 10 different from the main body of the fuel pump unit 12.
Description
Technical field
The present invention relates to a kind of pump horizontally placed fuel pump assembly, this fuel oil pump assembly is arranged in the fuel oil supply system of motor of vehicle, and its fuel pump unit transverse is arranged in the fuel tank.
Background technique
Owing to be arranged on the head pressure of the fuel pump in the fuel tank, liquid fuel in the oil-fired system of internal-combustion engine vehicle (hereinafter referred to as fuel oil) is from above-mentioned fuel tank, be discharged from after the fuel filter filtering, this fuel oil that is discharged from is sent to internal-combustion engine under the state that its pressure is controlled, and is sprayed to the firing chamber of motor from fuel injector.
In nearest fuel pump, the higher turbine pump of head pressure becomes main flow, and the motor high speed rotary that it makes fuel pump utilizes impeller that fuel oil is upwards attracted, and with it to starting pusher side to discharge.
When fuel pressure stops (fuel pump stops) when descending because of motor, the starting of ensuing motor just is difficult to carry out smoothly.
Therefore, must remain on certain altitude near the fuel pressure in the fuel supply line of motor, to guarantee the performance of restarting of motor.
Therefore, remain on the pressure of regulation for fuel pressure with fuel oil supply device, people adopt a kind of like this fuel pump: the discharge side at fuel pump is provided with safety check, when motor quits work, stop fuel oil to the pump side oil return by this safety check, remain on when driving with on the contour pressure with fuel pump so that will stay the pressure of the fuel oil that starts pusher side.
When the maintenance of this fuel pressure is in poor shape, after may occurring in motor and just having quit work, the phenomenon that the fuel oil in the fuel supply line evaporates, vaporizes because of the heat of motor.Therefore, if motor also in the comparative heat once more with its starting, then when fuel oils such as gasoline that existence in the fuel supply line has been vaporized, can't pilot engine, motor is restarted the problem of aspect of performance.
On the other hand, in recent years, consideration for the environment aspect, requirement alleviates the gasified fuel that leaks from the oil-fired system of vehicle, and fuel pressure is high more, and the amount that its vaporization is leaked is just many more, therefore, also there is a kind of like this suggestion in fuel pressure, promptly during motor quits work, keeps after preferably making fuel pressure be reduced to the degree that does not make motor generation starting problem.
At such problem, a kind of vertical type fuel pump unit (referring to patent documentation 1: Japanese Patent Application Publication communique spy opens 2001-263187) of putting is arranged, when the pressure of staying the fuel oil that starts pusher side surpassed the pressure of regulation, it can discharge the pressure of overage.
As shown in Figure 4, this vertical putting in the type fuel pump unit, fuel pump device 40 is provided with pressure and regulates with valve body 46, this pressure is regulated and is formed in the valve chest 49 with valve body 46, the exhaust port 43 that this valve chest 49 is fuel pumps 41, and this pressure adjusting can overcome the elasticity loading force of elasticity load maintainer 48 with valve body 46 and move, the apparatus main body of fuel pump device 40 is provided with safety check 44, constituting of this safety check 44: oil return prevents to regulate with valve body 46 with this pressure with valve body 45 and moves towards the direction of leaving the valve seat 47 of valve chest 49 integratedly, thus between oil return prevents with valve body 45 and valve seat 47 formation slit and pressure is discharged.
In this fuel pump device 40, this fuel pump vertically is arranged in the fuel tank, goes up the valve chest that vertically is set to exhaust port 43 in the top, and the safety check 44 that is located in the valve chest can vertically moved up and down.
And, formation according to this safety check 44, though the head pressure of fuel pump is higher when driving, but when motor quits work, can't under higher pressure, keep, and keep after will making its pressure be reduced to the degree of the necessary pressure of piloting engine once more staying the fuel oil that starts pusher side.
Above-mentioned fuel pump unit in the past is generally vertical puts type, but the horizontally placed fuel pump assembly (referring to patent documentation 2: Japanese Patent Application Publication communique spy opens 2003-120453) that the fuel pump unit transverse is arranged on the bottom in the fuel tank is also arranged.
In recent years, effective utilization of the vehicle body of Motor Vehicle etc. is updated, and especially under the situation of four-wheel wagon, has in mind from the arrangement relation aspect that reduces vehicle body integral body such as vehicle body height, requires to do fuel tank to such an extent that thin as far as possible cry grows to even greater heights.
In order to satisfy this requirement, in pump horizontally placed fuel pump assembly, the fuel pump unit transverse is arranged at bottom in the fuel tank.
And the exhaust port of fuel pump unit also similarly is set on roughly the substantially horizontal with this unit main body, utilizes the motor of fuel pump unit to make the impeller revolution, with the fuel oil that sucts from this exhaust port to starting pusher side to discharge; Forming of fuel gallery: be connected in the communication passage of pump assembly from above-mentioned exhaust port, afterwards fuel oil longitudinally sent.
Summary of the invention
Therefore, people open cross setting spy in the horizontally placed fuel pump assembly of putting down in writing in the 2003-120453 communique the spy and open that the pump of putting down in writing in the 2001-263187 communique is vertical to be put type fuel pump unit and used.
In this case, as shown in Figure 4, exhaust port 43 as the fuel oil that drinks up, valve chest 49 is provided with along the rotational axis direction of the pump impeller 42 of fuel pump device 40, therefore, when with this fuel pump device 40 when horizontal, be located at the horizontal arrangement type that safety check 44 on the valve chest 49 also becomes approximate horizontal in the exhaust port 43.
When vertically being provided with, safety check 44 is designed to rely on the weight of valve body self and cut out naturally after motor quits work, and its oil return prevents to use can driving fit between valve body 45 and the valve seat.Yet, when safety check 44 itself is carried out above-mentioned cross setting, after motor quits work, the driving fit that can not between oil return prevents with valve body 45 and valve seat, realize ideal.
Therefore, when pressure stops to descend because of motor, or cause fuel leakage, or cause air to enter, when piloting engine after this, fuel oil will treat that the air in the fuel supply line just can supply with after being discharged from, and has so just produced to the problem that will spend the long period till burning.
So, following requirement to fuel oil pump assembly has appearred: can address the above problem, the fuel pump device cross setting is used, the fuel pressure maintaining valve with the split of fuel pump main body is set on other positions simultaneously, and the direction of action that makes the fuel pressure maintaining valve is for vertically.
The present invention relates to a kind of pump horizontally placed fuel pump assembly, described fuel oil pump assembly comprises: the fuel pump unit that is horizontally set at the bottom of fuel tank; And fuel gallery, one end of this fuel gallery is connected to the exhaust port of described fuel pump unit, the other end is connected to fuel filter portion, wherein, in the fuel gallery longitudinally of pump case, be provided with the fuel pressure maintaining valve, this longitudinally the axial direction of fuel gallery and described fuel pump unit intersect.
In this fuel oil pump assembly, the fuel gallery longitudinally of described pump case preferably comprises oil pump joint and filter cleaner joint.
In this fuel oil pump assembly, described fuel pressure maintaining valve is preferably disposed in the fuel gallery of described oil pump joint of described pump case, and wherein, this oil pump joint is connected to described exhaust port.
In this fuel oil pump assembly, described fuel pressure maintaining valve preferably has the valve body of action longitudinally.
According to the present invention, owing in the fuel gallery longitudinally of pump case, be provided with the fuel pressure maintaining valve, so even pump horizontally placed fuel pump assembly also can keep higher fuel pressure when motor quits work.In addition, can reduce the fuel pressure that takes place from the fuel pressure maintaining valve and leak, the starting performance that makes motor is put the type fuel oil pump assembly and is improved as vertical.
Description of drawings
Fig. 1 is the schematic representation of partly cut-away, the fuel oil pump assembly in its expression embodiments of the invention, and this fuel pump has fuel pump case portion.
Fig. 2 is for representing the schematic appearance of the fuel oil pump assembly in the embodiments of the invention with the form of partly cut-away, this fuel pump has fuel pump case portion.
The cross-sectional schematic of Fig. 3 for amplifying, the structure of the fuel pressure maintaining valve of its expression fuel pump case.
Fig. 4 is the expression vertical explanatory drawing of putting the type fuel pump device in the past.
Embodiment
With reference to the accompanying drawings embodiments of the invention are described in detail.
As shown in Figure 1, in the pump horizontally placed fuel pump assembly 1 of present embodiment, fuel pump case portion 3 has: fuel pump unit 12, and this fuel pump unit 12 is set at the bottom of fuel tank 2; With pump case 10, in this pump case 10, the oil pump joint 14 of fuel gallery 16 is connected with the exhaust port 13 of fuel pump unit 12, and filter cleaner joint 25 is connected with fuel filter portion 20.
Be formed with the fuel gallery 16 of oil pump joint 14 in this fuel pump case portion 3, the direction intersecting along the axial direction with fuel pump unit 12 is provided with safety check 5 in that part of fuel gallery 16 of i.e. vertical formation of pump case 10.
This safety check 5 is equivalent to the fuel pressure maintaining valve.The direction with the axis perpendicular of fuel pump unit 12 preferably is arranged in the fuel gallery 16 that is provided with safety check 5.
But fuel gallery longitudinally of the present invention is not limited thereto, so long as the valve body of safety check 5 relies on its deadweight driving fit in valve seat when motor quits work, thereby can prevent interior the getting final product of scope of fuel leakage.
Fuel oil pump assembly 1 mainly is made of fuel pump case portion 3 and fuel filter portion 20, and wherein, fuel pump case portion 3 has fuel pump unit 12 and pump case 10, and the opening portion of fuel tank 2 is fixed in fuel filter portion 20.
Receipts are equipped with fuel pump unit 12 in the inside of pump case 10.Fuel pump unit 12 is with respect to the bottom transverse setting of fuel tank 2.Pump case 10 has main body 11 and the fuel gallery 16 that is built-in with fuel pump unit 12.
There is connection opening 14a (referring to Fig. 3) fuel gallery 16 on the oil pump joint 14 of one end, not shown filter cleaner portion connection mouth is arranged on the filter cleaner joint 25 of its other end.
This fuel gallery 16 both can be formed on the inside of aforementioned body 11, also can form with main body 11 splits.
In addition, fuel gallery 16 comprises two kinds of integrated and split types, and so-called integrated is meant with fuel gallery 16 and has formed oil pump joint 14 and filter cleaner joint 25; So-called split type is meant with the main body of fuel gallery 16 and separates, and forms oil pump joint 14 and filter cleaner joint 25 separately, then they and fuel gallery 16 is coupled together.
As shown in Figure 1, present embodiment is depicted as the fuel gallery 16 of oil pump joint 14 and filter cleaner joint 25 splits formation.
End (right side among the figure) in the main body 11 of pump case 10 is provided with oil pump joint 14.
The connection opening 14a (referring to Fig. 3) that is arranged on the oil pump joint 14 on this main body 11 is connected to the exhaust port 13 of fuel pump unit 12.The filter cleaner connection mouth of filter cleaner joint 25 is connected to the entrance part of fuel filter portion 20.
In Fig. 1, in the main body 11 of pump case 10, receive the suction filter 30 that fuel pump unit 12 is housed and is arranged on the bottom of this fuel pump unit 12, suction filter 30 is connected to the suction port of fuel pump unit 12.
Constituting of these pump case 10 integral body: when fuel oil being injected in the fuel tank 2, pump case 10 integral body are immersed in the fuel oil, and the fuel pump unit 12 that is located in the main body 11 can fully suck fuel oil.
Therefore, main body 11 forms: the fuel oil that is injected in the fuel tank 2 can freely enter in this main body 11.
Like this, fuel pump unit 12 sucks the fuel oil in the fuel tank 2 by suction filter 30.The bigger impurity that suction filter 30 can be avoided being contained in the fuel oil sucks fuel pump unit 12.
In addition, fuel oil transmitter 31 is arranged on main body 11, measure and measurement result is exported by the amount of the fuel oil in 31 pairs of fuel tanks of fuel oil transmitter 2.Discharged from its exhaust port 13 by the fuel oil that fuel pump unit 12 sucks, and be sent to the oil pump joint 14 of fuel gallery 16.
As shown in Figure 2, pump case 10 is configured to be separated with each other at interval with fuel filter portion 20.The opening portion of fuel tank 2 is fixed in fuel filter portion 20.In Fig. 2 with the structure of the represented pump case of the form of partly cut-away 10 with the joint of fuel filter portion 20, the best Connecting format when being illustrated in these both isolated configurations.
By the supporting part 24,24 that is located at its both sides, fuel filter portion 20 is with the state of frame on pump case 10, is against the support bearing parts 19,19 be located on this pump case 10 and coupled.
One end is fixed on supporting part 24 in the fuel filter portion 20 and has compression helical spring 24a in the hole portion that is mounted on this supporting part 24.Be formed with blind hole 19a at the front end that is formed at the support bearing parts 19 on the pump case 10.
Supporting part 24 is configured to: when its front end is engaged with the support bearing parts 19 of pump case 10, its compression helical spring 24a is inserted among the blind hole 19a of support bearing parts 19, is made between pump case 10 and the fuel filter portion 20 slightly separately and with fuel filter portion 20 elastic support by this compression helical spring 24a.
Whereby, between supporting part 24 and support bearing portion were with 19, separated state linked together to be loaded by elasticity for pump case 10 and fuel filter portion 20, and its interval between the two is scalable.
The structure that formation adopted of this pump case 10 and fuel filter portion 20 is: suction filter 30 is loaded push consistently, even this makes because the variation in pressure of box house, the vibration of fuel tank 2 in vehicle is exercised etc. have taken place under the situation of fuel tank 2 self-deformations etc., is arranged on the bottom that suction filter 30 that receipts are loaded on the bottom of the fuel pump unit 12 in the pump case 10 also can not leave fuel tank 2.
In addition, float 18 shown in Figure 2 is provided with for the liquid level that detects the fuel oil in the fuel tank.
Below the exhaust port 13 of fuel pump unit 12 shown in Figure 1 and the linkage structure that is provided with between the oil pump joint 14 of safety check 5 are described.
The oil pump joint of being located on the main body 11 of pump case 10 14 is connected on the exhaust port cylindraceous 13 of fuel pump unit 12, and this fuel pump unit 12 is horizontally installed in the fuel tank 2.
As shown in Figure 3, in this linkage structure, make the outer embedding of connection opening 14a of oil pump joint 14 be connected in the exhaust port 13 of fuel pump unit 12.
Oil pump joint 14 has: the connection opening 14a that is flush-mounted in exhaust port 13; The passage that will form from this connection opening 14a undergauge is towards the curved part 14b of vertical approximate vertical bending; Valve filler opening 14c; Seat portion 14d; Valve chest 14e with safety check 5.Seat portion 14d and valve chest 14e are combined into one by bonding or welding etc.
As shown in Figure 3, seat portion 14d and valve chest 14e form in curved part 14b continuously, and curved part 14b and seat portion 14d form continuously by partition wall 14f, and this partition wall 14f has the less valve filler opening 14c of diameter.
As shown in Figure 1, as the circulation path from the exhaust port 13 of fuel pump unit 12 to the fuel oil of the filter cleaner connection mouth of filter cleaner joint 25, oil pump joint 14 constitutes the part of fuel galleries 16.
In addition, about the position of safety check 5 is set, in the present embodiment, be that example is illustrated with oil pump joint 14 places that are arranged on fuel gallery 16 as shown in Figure 1, but the present invention is not limited to this.For example, can be arranged on filter cleaner joint 25 places of fuel gallery 16, also can be arranged on other middle part office of fuel gallery 16.
Below the structure as the safety check 5 of fuel pressure maintaining valve is described.As shown in Figure 3, safety check 5 is by constituting as the bottom: valve body 5a, and this valve body 5a is formed by hemispheric valve head 5b and valve axial region 5g; Retainer 5f, this retainer 5f leads to the valve axial region, and the valve axial region can vertically slided freely; Valve seat 5c, this valve seat 5c are formed on the partition wall 14f of valve head 5b institute butt; With valve oil outlet 5e.
12 fuel oils of discharging from the fuel pump unit, at first by valve filler opening 14c, the passage 5d of the periphery by being formed at retainer 5f is sent valve oil outlet 5e then.
In addition, safety check 5 is not limited to the structure of form shown in Figure 3, also can adopt other forms of structure.For example, the shape of the head of valve head 5b is not limited to hemisphere, also can be conical.And valve body 5a also can be a spheroid.
Below fuel filter portion 20 is described.As shown in Figure 1, the flange components 23 of fuel filter portion 20 is formed at the upper end portion of receiving dress parts 22.
On the upper end of the outside that stretches out in fuel tank 2 of fuel oil pump assembly 1, be provided with main pipe assembly department 27 and connector 29.
Fuel oil is fed into motor by the main pipe (not shown) that is connected in this main pipe assembly department 27.Connector 29 is connected to the not shown FPC Fuel Pump Controller unit (PFC unit) as control device.
This PFC unit is based on the information of illustrated control unit of engine (ECU) output never, current value that control is supplied with to fuel pump unit 12 or voltage are with the output of control fuel pump unit 12, so that control the pressure of the fuel oil of supplying with to motor according to the operational situation of motor.
The known control mechanism that the control of the PFC unit that is undertaken by this ECU can utilize Japanese Patent Application Publication communique 2001-214827 for example to be put down in writing.
Below with reference to Fig. 1-Fig. 3, the action of the fuel oil pump assembly 1 of present embodiment is described.
The fuel oil pump assembly 1 of present embodiment is so-called anti-oil-return type (returnless) fuel pump, is promptly directly controlled the output of fuel pump unit 12 by not shown control mechanism, so that fuel pressure becomes expected value.
Therefore, in the starting process of motor, carry out such control: worked in fuel pump unit 12 always and the pressure of the fuel oil of being discharged is maintained certain value, be desired value in order to ensure fuel pressure simultaneously, make not shown return flow oil valve work, thereby make a part of return flow oil to fuel tank 2.
When making 12 work of fuel pump unit, the fuel oil in the fuel tank 2 is promptly sucked in the fuel pump unit 12 from suction filter 30 by not shown impeller.
The exhaust port 13 that the fuel oil that is inhaled into is provided with from the oil pump axial direction along fuel pump unit 12 is discharged, and is sent to the connection opening 14a of oil pump joint 14, and this oil pump joint 14 is located on the main body 11 of pump case 10.
Then, at the curved part 14b place of oil pump joint 14, stream becomes vertically, and 14c enters seat portion 14d from the valve filler opening, then is sent oil pump joint 14 by passage 5d and valve oil outlet 5e in the safety check 5.
In the fuel oil that safety check 5 is sent oil pump joint 14 is flowed through fuel gallery 16, be sent to the entrance part of fuel filter portion 20 from the not shown filter cleaner connection mouth of filter cleaner joint 25, and then be sent in the fuel filter portion 20.
The fuel oil that is sent in the fuel filter portion 20 passes through filter element 21.By this filter element 21 time, less impurity etc. is promptly filtered from fuel oil.
Passed through the fuel oil of filter element 21, the inner passage by fuel filter portion 20 is sent to main pipe assembly department 27 again, and is fed into motor via the main pipe that is connected in this main pipe assembly department 27 (not shown).
The fuel pressure transmitter (not shown) that utilizes connector 29 to be had detects the pressure of the fuel oil that has passed through filter element 21, this detected fuel pressure signal is outputed to not shown PFC unit, output to fuel pump unit 12 is controlled so that the pressure of the fuel oil of supplying with to motor become just when.
The fuel oil of discharging from the exhaust port 13 of fuel pump unit 12 flows along the oil pump axial direction.And the path direction of this fuel oil stream is changed vertically at the curved part 14b place of the inlet side of the valve body 5a that is formed at safety check 5.
Therefore, what be transferred in safety check 5 is that path direction is changed fuel oil longitudinally, pushes away the valve body 5a of safety check 5 upward by the pressure of this fuel oil, thereby away from valve seat 5c.Par, back side 5h and the retainer 5f of the valve head 5b of valve body 5a above being pushed to connect.
Whereby, fuel oil from valve filler opening 14c by the slit between valve head 5b and the valve seat 5c, flow through valve body 5a around, by passage 5d, then from the valve oil outlet 5e in downstream side, promptly from oil pump joint 14, be sent via fuel gallery 16, then, this fuel oil is sent to the firing chamber of motor via above-mentioned fuel filter portion 20 and not shown sparger.
When the revolution of fuel pump unit 12 during because of the stopping of motor, fuel oil pump assembly 1 promptly can not be again from fuel tank 2 pressurized delivered fuel oils.
So, the pressure in the not shown above-mentioned main pipe just becomes and is higher than the pressure of fuel oil pump assembly 1.
Because this pressure reduction, par, the back side 5h of the valve head 5b of the valve body 5a of safety check 5 are subjected to contrary pressure of fuel oil and are pushed away downwards.Whereby, valve head 5b is connected to valve seat 5c and general's gap closing between the two.
At this moment, the valve body 5b and the valve seat 5c that are accompanied by safety check 5 connect, and safety check 5 switches to closed condition from open mode, thereby stop the oil return of fuel oil, and stop the decline of fuel pressure.
Whereby, the fuel pressure in the above-mentioned main pipe that starts pusher side is remained on high pressure conditions after being discharged from optimum state from fuel pump unit 12.
In this case, since safety check 5 be provided with direction with respect to the oil pump axial direction of fuel pump unit 12 for vertically, so no matter be under the situation of the suitable pressure when being subjected to the starting of fuel pump unit 12, still under the contrary situation of pressing when stopped by it, the direction of displacement of valve body 5a is vertically.
Therefore, because the deadweight of valve body 5a in addition of above-mentioned pressure reduction, valve body 5a can vertically successfully move up and down.
In addition, valve body 5a can also be connected to it central position that forms spherical or conical valve seat 5c always and remain on the round type attitude, and make this central position under this state with valve seat 5c driving fit.
Since have safety check 5 valve body 5a deadweight in action, so this closed state is continued after motor stops to be kept.Therefore, valve body 5a is improved with respect to the driving fit performance (seating performance) of valve seat 5c, thereby can farthest eliminate because of the bad fuel leakage that produces of the driving fit between valve body 5a and the valve seat 5c.
In addition, almost can all eliminate such bad phenomenon, promptly effect moves up and down the torsional moment that produces obstacle smoothly to it on valve body 5a.
Like this, therefore the length of the valve axial region of the valve body 5a that just can extend can enlarge the scope of design of allowing the amount that fuel oil passes through in the safety check 5 to strengthen its stroke.
As above-mentioned illustrated, because safety check 5 (fuel pressure maintaining valve) vertically is provided with, even so after motor stops, motor also heat in, fuel leakage also can not take place in the pump horizontally placed fuel pump assembly 1 of present embodiment, and can keep and the vertical same high fuel pressure of fuel pressure maintaining valve of putting the type fuel pump device.Therefore, can aspect pump horizontally placed fuel pump assembly 1, improve the starting performance of motor.
Claims (5)
1. pump horizontally placed fuel pump assembly, wherein, described fuel oil pump assembly comprises:
Be horizontally installed on the fuel pump unit of the bottom of fuel tank; With
The fuel gallery, an end of this fuel gallery is connected to the exhaust port of described fuel pump unit, and the other end is connected to fuel filter portion,
It is characterized in that: in the fuel gallery longitudinally of pump case, be provided with the fuel pressure maintaining valve, this longitudinally the axial direction of fuel gallery and described fuel pump unit intersect.
2. pump horizontally placed fuel pump assembly according to claim 1,
It is characterized in that: the fuel gallery longitudinally of described pump case comprises oil pump joint and filter cleaner joint.
3. pump horizontally placed fuel pump assembly according to claim 1 and 2,
It is characterized in that: described fuel pressure maintaining valve is arranged in the fuel gallery of described oil pump joint of described pump case, and this oil pump joint is connected to described exhaust port.
4. pump horizontally placed fuel pump assembly according to claim 1 and 2,
It is characterized in that: described fuel pressure maintaining valve has the valve body of action longitudinally.
5. pump horizontally placed fuel pump assembly according to claim 3,
It is characterized in that: described fuel pressure maintaining valve has the valve body of action longitudinally.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP422032/2003 | 2003-12-19 | ||
| JP2003422032A JP2005180300A (en) | 2003-12-19 | 2003-12-19 | Horizontally arranged pump fuel pump module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1629469A true CN1629469A (en) | 2005-06-22 |
Family
ID=34783026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410101343 Pending CN1629469A (en) | 2003-12-19 | 2004-12-17 | Pump horizontally placed fuel pump assembly |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2005180300A (en) |
| CN (1) | CN1629469A (en) |
| TW (1) | TWI297373B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993993A (en) * | 2013-02-14 | 2014-08-20 | 罗伯特·博世有限公司 | Device for delivering fuel |
| CN115306609A (en) * | 2021-05-07 | 2022-11-08 | 温州锦佳汽车零部件有限公司 | Snap-on rotatable rocker arm support structure fuel pump assembly |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007231907A (en) * | 2006-03-03 | 2007-09-13 | Denso Corp | Fuel supply device |
| JP4670781B2 (en) * | 2006-09-22 | 2011-04-13 | 株式会社デンソー | Fuel pump module |
| JP4591873B2 (en) * | 2006-09-22 | 2010-12-01 | 株式会社デンソー | Fuel pump module |
| DE102006050827A1 (en) * | 2006-10-27 | 2008-04-30 | Audi Ag | Internal-combustion engine for motor vehicle, has lubricant circuit operated according to dry sump principle and provided with oil collecting tank that is arranged within cylinder crankcase in installation space between cylinders |
| JP2021139345A (en) * | 2020-03-06 | 2021-09-16 | 愛三工業株式会社 | Fuel supply device |
-
2003
- 2003-12-19 JP JP2003422032A patent/JP2005180300A/en active Pending
-
2004
- 2004-11-22 TW TW93135787A patent/TWI297373B/en not_active IP Right Cessation
- 2004-12-17 CN CN 200410101343 patent/CN1629469A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993993A (en) * | 2013-02-14 | 2014-08-20 | 罗伯特·博世有限公司 | Device for delivering fuel |
| CN103993993B (en) * | 2013-02-14 | 2018-11-13 | 罗伯特·博世有限公司 | Device for conveying fuel |
| CN115306609A (en) * | 2021-05-07 | 2022-11-08 | 温州锦佳汽车零部件有限公司 | Snap-on rotatable rocker arm support structure fuel pump assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI297373B (en) | 2008-06-01 |
| TW200530501A (en) | 2005-09-16 |
| JP2005180300A (en) | 2005-07-07 |
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