CN101205875A - Fuel supply device - Google Patents
Fuel supply device Download PDFInfo
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- CN101205875A CN101205875A CNA2007101413321A CN200710141332A CN101205875A CN 101205875 A CN101205875 A CN 101205875A CN A2007101413321 A CNA2007101413321 A CN A2007101413321A CN 200710141332 A CN200710141332 A CN 200710141332A CN 101205875 A CN101205875 A CN 101205875A
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- motor
- pump
- fuel
- unit
- chamber
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention provides a highly credible fuel supplying device preventing fuel temperature ascend. The fuel supplying device includes a case having a suction inlet, a delivery outlet, a motor chamber and a pump device chamber, the motor chamber are interconnected with the pump device chamber, but the suction inlet and the delivery outlet are directly connected with the pump chamber, fuel sucted from the suction inlet to the pump device chamber is sucted by the pump device on the condition of not passing the motor chamber, and output to the delivery outlet. A motor stator is embedded in the wall of the case. The motor may be brushless motor or stepper motor, processing speed control according to the consumption flow rate of the fuel injection valve. The fuel supplying device prevents the temperature ascend, and improves the credibility.
Description
Technical field
The present invention relates to a kind of fuel supplying device.
Background technique
Because of environmental problem, the viewpoint that rises from waste gas restriction, fuel cost and fuel supplying device has been changed over the electronic control type system with Fuelinjection nozzle from mechanical vaporizer, automobile has in recent years all adopted the latter's system.In recent years, the restriction of environmental problem not only is confined to automobile, also expand two-wheel vehicle, kicker gradually to, also has special car in addition, in the fuel supplying device that in automobile, adopts, the interior formula fuel supplying device (not shown) of case that employing is located at the centrifugal pump in the fuel tank has become main flow, but therefore need bigger fuel tank, vehicle little because of fuel tank, that air displacement is little, the problem in installing space can't dispose formula fuel supplying device in the case in fuel tank is difficult to the response environment problem, thereby needs to be installed in the outer in-line arrangement fuel supplying device of fuel tank.
As existing fuel supplying device, for example have in patent documentation 1 disclosed, by the in-line arrangement fuel supplying device that constitutes from the good volume type pump of absorption and direct-current brush motor.Pump comprises: suction valve; Delivery valve; Cylinder that can be chimeric slidably with piston; Constitute the plate of fuel pressurization chamber with cylinder; The swash plate that piston is moved in the axial direction; The slide block that between piston and swash plate, slides with the piston interlock, with respect to swash plate; Spring towards the swash plate pushing piston; And the spring holder that constitutes the seating plane of spring.Motor comprises: permanent magnet; The yoke in the formation magnetic force loop of stationary permanent magnet; With the swash plate one fixedly be rotated the axle; Be pressed into and be fixed on the stator that axle is gone up, had coiling; Constitute the brush of electrical contact; And connect the not shown storage battery and the lead-in wire of brush.Pump and motor utilize body or housing to interconnect and are integral, and fuel is attracted from the suction port of the motor-side that is located at housing, pass motor and enter in the pump, supply with in fuel passage at the delivery outlet from the pump side that is located at housing after the pressurization.
In this fuel supplying device, when rotating, make the swash plate rotation that is fixed on it when the storage battery of motor utilization outside.Then, under the rotation of swash plate, the piston and the cylinder that are pressed against on the swash plate by spring slide mobile.In the time of below piston moves to, the volume in the fuel pressurization chamber that is made of piston, cylinder, suction valve, delivery valve, plate increases, thus decompression in the described fuel pressurization chamber, and in the moment that becomes below the cracking pressure of suction valve, fuel is attracted from suction valve.Then, piston is moved upward, thus pressurization in the described fuel pressurization chamber, and in the stage more than pressing in being pressurized to the delivery pipe that is adjusted into authorized pressure by the pressure regulation device that is located at the outside, fuel is exported from delivery valve.This rotation of moving corresponding swash plate is carried out successively repeatedly by a plurality of pistons that concentric shape disposes.
Patent documentation 1: the Japan Patent spy opens the 2001-65447 communique
Axial piston pump is the good high efficiency pump of the performance that sucks the barometric pressure fuel down in the fuel tank (below be called self-priming performance), but owing to the configuration relation of suction valve, motor is configured in the suction side of pump sometimes.Therefore, if constitute the brush wear of the electric property contact of motor, then its abrasion powder may enter in the pump, thereby makes the pump breakage.In addition, the heating of Yin Mada and fuel temperature is risen produces steam from fuel, can produce air-resistance phenomenon when this steam enters in the pump, thus the problem that exists pump performance obviously to descend.
In addition, for example can dispose oil sealing or the such sealing component of mechanical seal at the joint of pump and motor and suppress the intrusion of brush wear powder and the rising of fuel temperature.Yet this moment, fuel can leak into the outside if sealed department is damaged or worsen, and in addition, also existed sealed department to produce torque loss, the structure problem complicated, that motor maximizes that becomes.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of high fuel supplying device of rising, reliability that prevents fuel temperature.
Fuel supplying device of the present invention comprises: the housing with suction port, delivery outlet, motor room and pump-unit chamber; Be located at the motor in the described motor room; And be located at the indoor pump-unit of described pump-unit, described motor room and described pump-unit chamber are interconnected, be characterized in that be attracted to the indoor fuel of described pump-unit is inhaled into the described pump-unit under not by the situation in the described motor room from described suction port, and to described delivery outlet output.
In addition, fuel supplying device of the present invention comprises: the housing with suction port, delivery outlet, motor room and pump-unit chamber; Be located at the motor in the described motor room; And be located at the indoor pump-unit of described pump-unit, and described motor room and described pump-unit chamber are interconnected, and it is held a little is that described suction port and delivery outlet all directly are communicated with described pump-unit chamber.
In addition, fuel supplying device of the present invention comprises: the housing with suction port, delivery outlet, motor room and pump-unit chamber; Be located at the motor in the described motor room; And be located at the indoor pump-unit of described pump-unit, and described motor room and described pump-unit chamber are interconnected, and its another characteristics are that described motor is a brushless motor.
Adopt fuel supplying device of the present invention, can obtain to prevent the rising of fuel temperature, the effect that reliability uprises.
Description of drawings
Fig. 1 is the sectional view of expression fuel supplying device of the present invention.
Fig. 2 is another routine sectional view of expression fuel supplying device of the present invention.
(symbol description)
1 housing
2 motor
3 pump-units
4 shell body walls
6 motor room
Pump-unit chambers 10
12 suction ports
13 delivery outlets
14 stators
Embodiment
Example 1
Fuel supplying device of the present invention shown in Figure 1 comprises: integral body is the columnar housing 1 of general hollow; Be located at the motor 2 in the housing 1; And the pump-unit 3 that is located in the housing 1, drives by motor 2.
Housing 1 comprises: motor field frame 7, have cylindrical wall 4 and end wall 5 as shell body wall, and be formed with the motor room 6 of accommodating motor 2 in inside; And pump-unit housing 11, pump-unit housing 11 has cylindrical wall 8 and end wall 9, is formed with the pump-unit chamber 10 of accommodating pump-unit 3 in inside.Utilize riveted joint to wait proper method to be combined with the open end of pump-unit housing 11 securely on the open end of motor field frame 7, motor room 6 is interconnected with pump-unit chamber 10.The cylindrical wall 8 of pump-unit housing 11 is provided with the suction port 12 of fuel, and end wall 9 is provided with the delivery outlet 13 of fuel.Motor field frame 7 except that the open end with pump-unit housing 11 is communicated with, all the other sealings.
Pump-unit 3 comprises: be located at the cylinder block 20 in the pump-unit housing 11; Thereby and the plunger 22 of cylinder 21 in the pump chamber of formation variable volume of in being located at a plurality of cylinders 21 of cylinder block 20, sliding.In addition, cylinder block 20 is provided with: the output channel 26 that has the suction path 24 of suction valve 23 and have the delivery valve 23 of the fuel output that is used to make compression in cylinder 21 for the fuel in the pump-unit chamber 10 is supplied with in cylinder 21.
Be provided with pressure spring 28 by retainer of the spring 27 on the protruding terminus of giving prominence to from cylinder 21 of plunger 22, plunger 22 contacts all the time slidably with the rotation swash plate 29 that is supported by the live axle 17 of motor 2 and rotate.
If motor 2 rotations, then plunger 22 to-and-fro motion in cylinder 21 successively under the rotation of rotation swash plate 29 is exported the fuel in the suction pump device chamber 10 from delivery outlet 13.At this moment, the fuel that enters in the pump-unit chamber 10 from suction port 12 is not directly attracted by pump-unit 3 by the motor room 6 that disposes motor 2, therefore we can say that motor room 6 is not in fuel passage.
Like this, in this fuel supplying device, the joint of pump and motor, be between motor room 6 and the pump-unit chamber 10 configuration prevent the sealing component that fuel enters.In addition, suction port 12 and delivery outlet 13 all only directly are communicated with pump-unit chamber 10, and directly are not communicated with motor room 6, only need to be communicated with motor room 6 by bearing 16 via pump-unit chamber 10, thereby motor room 6 become the stagnation part of fuel stream again.Therefore, in illustrated example, we can say that the motor 2 as DC Brushless Motor is configured in outside the fuel passage.In addition, motor 2 is a brushless motor, does not cause that in fuel passage foreign material sneak into fuel and produce the brush of electrical spark reason.
Fuel supplying device of the present invention comprises: the housing 1 with suction port 12, delivery outlet 13, motor room 6 and pump-unit chamber 10; Be located at the motor 2 in the motor room 6; And be located at pump-unit 3 in the pump-unit chamber 10, and motor room 6 and pump-unit chamber 10 are interconnected, and suction port 12 and delivery outlet 13 all directly are communicated with pump-unit chamber 10.In addition, the fuel in suction port 12 is attracted to pump-unit chamber 10 can be by not being inhaled into the pump-unit in the motor room 6, from delivery outlet 13 outputs.
In addition, motor 2 also can be brushless motor or stepper motor, and consumed flow that also can the based on fuel injection valve is carried out rotating speed control to motor 2, or the stator of brushless motor is embedded in the shell body wall of housing.
Therefore, adopt fuel supplying device of the present invention, can obtain to prevent the rising of fuel temperature, the effect that reliability uprises.
In illustrated fuel supplying device, adopted DC Brushless Motor, in this DC Brushless Motor, the rotor 18 of motor 2 is fixed on permanent magnet on the live axle 17, iron core, coiling and lead-in wire are embedded in the cylindrical wall inner of the outer housing of fuel passage, therefore durability is good, can suppress torque loss, the motor Miniaturizable.In addition, because the housing of DC Brushless Motor is the moulding resin of pyroconductivity less than metal, therefore by suppressing to suppress the rising of fuel temperature as the heat that coiling produced of heater heat output to pump side.
In addition, because DC Brushless Motor is determined rotating speed by the excitation signal from Electronic Control Unit (ECU), therefore rotating speed control easily, come the control pump rotating speed by the consumed flow of corresponding Fuelinjection nozzle, also the capacity of reflux of getting back to the fuel tank from pressure control device can be suppressed at inferior limit, the slip heat that piston and the slide part between the cylinder at pump can be produced suppresses minimumly.
In addition, as the method for rotor 18 stationary permanent magnet, used Bond, fuel might make Bond worsen in the past, but this point also can adopt bonded permanent magnet and inlays shaping and improve reliability on rotor 18 (axle) by permanent magnet.
Example 2
In example shown in Figure 1, adopt DC Brushless Motor to be illustrated to the motor 2 of fuel supplying device, but for Spin Control, DC Brushless Motor need expensive driving loop, thereby has the expensive problem of Electronic Control Unit (ECU).In fuel supplying device shown in Figure 2, as shown in Figure 2, this problem can be by adopting stepper motor to be solved as motor 2.Other structure is identical with the fuel supplying device of Fig. 1.
That is, identical with the example of Fig. 1, comprise as the motor 2 of stepper motor: have the rotor 18 that is fixed on the permanent magnet on the live axle 17 and as the stator 14 of the coil that produces driving magnetic field.Adopt this stepper motor, make the driving loop of the Electronic Control Unit of motor 2 rotations just can become cheap.
Claims (7)
1. fuel supplying device comprises:
Housing with suction port, delivery outlet, motor room and pump-unit chamber;
Be located at the motor in the described motor room; And
Be located at the indoor pump-unit of described pump-unit,
Described motor room and described pump-unit chamber are interconnected, it is characterized in that,
Be attracted to the indoor fuel of described pump-unit is inhaled into the described pump-unit under not by the situation in the described motor room from described suction port, and to described delivery outlet output.
2. fuel supplying device as claimed in claim 1 is characterized in that, described motor is a brushless motor.
3. fuel supplying device as claimed in claim 1 is characterized in that, described motor is a stepper motor.
4. as each described fuel supplying device in the claim 1～3, it is characterized in that the stator of described motor is inlayed in the shell body wall that is formed in described housing.
5. as each described fuel supplying device in the claim 1～4, it is characterized in that the consumed flow of based on fuel injection valve is carried out rotating speed control to described motor.
6. fuel supplying device comprises:
Housing with suction port, delivery outlet, motor room and pump-unit chamber;
Be located at the motor in the described motor room; And
Be located at the indoor pump-unit of described pump-unit,
Described motor room and described pump-unit chamber are interconnected, it is characterized in that,
Described suction port and delivery outlet all directly are communicated with described pump-unit chamber.
7. fuel supplying device comprises:
Housing with suction port, delivery outlet, motor room and pump-unit chamber;
Be located at the motor in the described motor room; And
Be located at the indoor pump-unit of described pump-unit,
Described motor room and described pump-unit chamber are interconnected, it is characterized in that,
Described motor is a brushless motor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006344263 | 2006-12-21 | ||
| JP2006344263A JP2008157055A (en) | 2006-12-21 | 2006-12-21 | Fuel feeding apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101205875A true CN101205875A (en) | 2008-06-25 |
Family
ID=39566290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101413321A Pending CN101205875A (en) | 2006-12-21 | 2007-08-01 | Fuel supply device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2008157055A (en) |
| CN (1) | CN101205875A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235277A (en) * | 2010-04-21 | 2011-11-09 | 三菱电机株式会社 | Fuel supply device |
| CN102235278A (en) * | 2010-04-23 | 2011-11-09 | 三菱电机株式会社 | Fuel supply device |
| CN101634264B (en) * | 2008-07-22 | 2012-02-22 | 三菱电机株式会社 | Fuel supply device |
| CN101737213B (en) * | 2008-11-18 | 2013-03-06 | 三菱电机株式会社 | Fuel supply device |
| CN103089501A (en) * | 2011-11-02 | 2013-05-08 | 三菱电机株式会社 | Fuel supply device |
| CN101871410B (en) * | 2009-04-27 | 2013-08-14 | 三菱电机株式会社 | Fuel supply device |
| CN109268274A (en) * | 2018-12-06 | 2019-01-25 | 郑子叶 | A kind of centrifugal pump and its assembly method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6396083B2 (en) * | 2014-06-09 | 2018-09-26 | 日立アプライアンス株式会社 | Electric blower and vacuum cleaner |
| JP2018194004A (en) * | 2018-08-29 | 2018-12-06 | 日立アプライアンス株式会社 | Electric air blower and vacuum cleaner |
-
2006
- 2006-12-21 JP JP2006344263A patent/JP2008157055A/en active Pending
-
2007
- 2007-08-01 CN CNA2007101413321A patent/CN101205875A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634264B (en) * | 2008-07-22 | 2012-02-22 | 三菱电机株式会社 | Fuel supply device |
| CN101737213B (en) * | 2008-11-18 | 2013-03-06 | 三菱电机株式会社 | Fuel supply device |
| CN101871410B (en) * | 2009-04-27 | 2013-08-14 | 三菱电机株式会社 | Fuel supply device |
| CN102235277A (en) * | 2010-04-21 | 2011-11-09 | 三菱电机株式会社 | Fuel supply device |
| CN102235277B (en) * | 2010-04-21 | 2014-03-12 | 三菱电机株式会社 | Fuel supply device |
| CN102235278A (en) * | 2010-04-23 | 2011-11-09 | 三菱电机株式会社 | Fuel supply device |
| CN102235278B (en) * | 2010-04-23 | 2013-09-18 | 三菱电机株式会社 | Fuel supply device |
| CN103089501A (en) * | 2011-11-02 | 2013-05-08 | 三菱电机株式会社 | Fuel supply device |
| CN109268274A (en) * | 2018-12-06 | 2019-01-25 | 郑子叶 | A kind of centrifugal pump and its assembly method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008157055A (en) | 2008-07-10 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080625 |