CN205370812U - Trouble early -warning type fuel pump - Google Patents
Trouble early -warning type fuel pump Download PDFInfo
- Publication number
- CN205370812U CN205370812U CN201521107068.6U CN201521107068U CN205370812U CN 205370812 U CN205370812 U CN 205370812U CN 201521107068 U CN201521107068 U CN 201521107068U CN 205370812 U CN205370812 U CN 205370812U
- Authority
- CN
- China
- Prior art keywords
- fuel
- oil
- seat
- electric appliances
- level sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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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
- Y02T10/40—Engine management systems
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- Level Indicators Using A Float (AREA)
Abstract
The utility model provides a trouble early -warning type fuel pump. It includes the motor casing, electricity chassis bottom is connected with the oil feed board, and motor casing upper portion is connected with the end cover that produces oil, be provided with oil feed board fender nail in the middle of the oil feed board bottom, the oil feed board keeps off the nail top and is provided with the impeller, is provided with out the oiled -plate method above the impeller, be provided with out the oiled -plate method bearing in the middle of going out the oiled -plate method, go out the oiled -plate method bearing housing on the armature shaft of pump core below, electric seat left side top is provided with the choke coil assembly, and electric seat right side top is connected with glib, is provided with the electrode above the choke coil assembly, the end cover that produces oil lid is on electric seat, the pump core still is connected with oil level monitoring system, it includes engine oil level sensor circuit and observation circuit two parts oil level monitoring system. The utility model discloses not only solved among the engine oil level sensor varistor ware contact resistance to oil level signal's the problem that influences, moreover to a certain extent real -time supervision the extent of corrosion of fuel to engine oil level sensor and fuel pump to the early warning has been carried out.
Description
Technical field
This utility model relates to automobile fuel pump technical field, specifically a kind of fault pre-alarming formula fuel pump.
Background technology
Fuel level sender is the important spare part of automobile, and automobile driver learns the surplus of vehicle fuel by the fuel level sender in automotive oil tank, estimates the distance travelled of automobile with this.Simultaneously on the automobile possessing car networking, with greater need for the surplus accurately learning vehicle fuel, this is accomplished by fuel level signal accurately.But what current vehicle fuel fuel level sensor was taked mostly is the rheostat fuel level sensor of two-wire system, this kind of fuel level sensor can not be completely eliminated the impact on oil level signal of the rheostat contact resistance, therefore to oil level signal forbidden truly have certain hidden danger.In order to evade the impact on oil level signal of the rheostat contact resistance, also it has been proposed that three-wire system automobile oil level sensor, this kind of fuel level sensor can be completely eliminated the impact on oil level signal of the rheostat contact resistance, it is possible to the signal of accurate delivery vehicle fuel oil level.But, this just scheme that oil level signal affected by rheostat contact resistance is completely eliminated, has buried hidden danger but to the accident of casting anchor of automobile.This is owing to why automobile rheostat produces contact resistance, it it is the result owing to rheostatic corrosion is caused by fuel oil, since the rheostat of fuel level sensor is created corrosiveness by vehicle fuel, also just the fuel pump being immersed in fuel oil is produced corrosiveness, when fuel pump is corroded to a certain degree, fuel pump is by complete failure, quit work, automobile will appear from the accident of casting anchor, in this process owing to the impact of the rheostat contact resistance of fuel level sensor is completely eliminated, reflect so not having symptom before cut-out of fuel pump.The impact on oil level signal of the vehicle fuel fuel level sensor contact resistance, the accident of casting anchor that automobile fuel pump causes because of corrosion, this is the relation of fish and Pedis Ursus, if can get both, will be the breakthrough of vehicle fuel oil level monitoring technology.
Utility model content
The purpose of this utility model is to be in that to provide a kind of fault pre-alarming formula fuel pump; this system not only solves rheostat contact resistance in fuel level sensor affects problem to oil level signal; and monitored the fuel oil extent of corrosion to fuel level sensor and fuel pump thereof to a certain extent in real time; and carried out early warning; thus effectively protection is subject to the parts of electromagnetic effect; so that it can normal operation, improve the service life of self when ensureing fuel system normal operation.
nullThe purpose of this utility model is achieved through the following technical solutions: it includes motor casing，Oil-feed plate it is connected to bottom described motor casing，Motor casing top is connected to fuel-displaced end cap，It is provided with oil-feed plate retaining screw in the middle of bottom described oil-feed plate，Oil-feed plate retaining screw is provided above impeller，Impeller is provided above out oiled-plate method，Described go out to be provided with fuel-displaced board shaft in the middle of oiled-plate method and hold，On fuel-displaced board shaft bearing sleeve armature shaft below pump core，Armature shaft above described pump core is cased with Seat for electric appliances bearing，Described Seat for electric appliances bearing is cased with Seat for electric appliances，Choke coil assembly it is provided above on the left of described Seat for electric appliances，It is installed with magnetic core in choke coil assembly，Seat for electric appliances middle upper part is provided with brush，On the right side of Seat for electric appliances, top is connected with oil nozzle，Choke coil assembly is provided above electrode，Described fuel-displaced end cap covers on Seat for electric appliances，Described oil nozzle side is additionally provided with relief valve，Described pump core is also connected with oil level monitoring system，Described oil level monitoring system it include fuel level sensor circuit and observation circuit two parts，Wherein fuel level sensor circuit again by: rheostat and rheostat contact resistance two parts are constituted；Observation circuit by: fuel gauge electronic control unit, divider resistance and constant-current source power module are constituted, the contact resistance at described rheostat movable contact place electrically connects with fuel gauge electronic control unit, and contact resistance is connected with constant-current source power module also by divider resistance simultaneously；Described rheostat two ends except movable contact, wherein one end is connected with power supply, and other end, as the collection terminal of oil level signal, electrically connects with fuel gauge electronic control unit；The power supply of whole system is by the storage battery power supply of automobile, and the power supply of fuel level sensor is powered by constant-current source power module.
The utility model has the advantage of: what (1) can avoid rheostat contact resistance in fuel level sensor on oil level signal completely affects problem；(2) monitor the fuel oil extent of corrosion to fuel level sensor and fuel pump thereof in real time, and carry out early warning.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is sectional view of the present utility model；
Fig. 3 is the top view of Fig. 1；
Fig. 4 is the circuit diagram of this utility model oil level monitoring system.
Detailed description of the invention
By the examples below, and in conjunction with accompanying drawing, the technical solution of the utility model is further described in detail.
Embodiment: as shown in accompanying drawing 1-4, this utility model is a kind of fault pre-alarming formula fuel pump.nullIt includes motor casing 1，It is connected to oil-feed plate 2 bottom described motor casing 1，Motor casing 1 top is connected to fuel-displaced end cap 3，It is provided with oil-feed plate retaining screw 4 in the middle of bottom described oil-feed plate 2，Oil-feed plate retaining screw 4 is provided above impeller 5，Impeller 5 is provided above out oiled-plate method 6，Described go out to be provided with fuel-displaced board shaft in the middle of oiled-plate method 6 and hold 7，Fuel-displaced board shaft is held on 7 armature shafts being enclosed within below pump core 8，Armature shaft above described pump core 8 is cased with Seat for electric appliances bearing 9，Described Seat for electric appliances bearing 9 is cased with Seat for electric appliances 10，It is provided above choke coil assembly 11 on the left of described Seat for electric appliances 10，Magnetic core 12 it is installed with in choke coil assembly，Seat for electric appliances 10 middle upper part is provided with brush 13，On the right side of Seat for electric appliances 10, top is connected with oil nozzle 14，Choke coil assembly 11 is provided above electrode 15，Described fuel-displaced end cap 3 covers on Seat for electric appliances 10，Described oil nozzle 14 side is additionally provided with relief valve 17，Described pump core 8 is also connected with oil level monitoring system，Described oil level monitoring system includes fuel tank internal fuel level sensor circuit 101 and gauge internal observation circuit 102 two parts，Wherein fuel tank internal fuel level sensor circuit 101 again by: rheostat 111 and rheostat contact resistance 112 two parts are constituted；Gauge internal observation circuit 102 by: fuel gauge electronic control unit 121, divider resistance 122 and constant-current source power module 123 are constituted, the contact resistance 112 at described rheostat 111 movable contact place electrically connects with fuel gauge electronic control unit 121, and contact resistance 112 is connected with constant-current source power module 123 also by divider resistance 122 simultaneously；The described rheostat 111 two ends except movable contact, wherein one end is connected with power supply, and other end, as the collection terminal of oil level signal, electrically connects with fuel gauge electronic control unit 121；The power supply of whole system is by the storage battery power supply of automobile, and the power supply of fuel tank internal fuel level sensor is powered by constant-current source power module 123, and described contact resistance 112 is owing to rheostat 111 is corroded and the resistance of issuable a kind of uncertain resistance by fuel oil.
When this utility model oil level monitoring system runs, rheostat 111 in fuel tank internal fuel level sensor is under the drive of oil float, resistance value between A point and B point will change therewith, assume when certain oil mass, resistance value between A point and B point is Rx, the resistance of rheostat contact resistance 112 is Rcontact, and the current value that constant-current source power module 123 provides is I, then fuel level sensor exports and to magnitude of voltage U1 and the U2 of gauge internal observation circuit is:
U1=I*Rx, U1 are oil level signal, and the size of its magnitude of voltage is unrelated with the resistance of rheostat contact resistance 112, i.e. oil level signal is not by the impact of rheostat contact resistance 112.
U2=I* (Rx+Rcontact), U2 are that fuel level sensor and fuel pump thereof are by the main signal of fuel oil extent of corrosion.
U2-U1=I*Rcontact, so the magnitude of voltage of U2-U1 represents fuel level sensor and fuel pump thereof to a certain extent by fuel oil extent of corrosion.
As U2-U1=0, i.e. U2=U1 illustrates that rheostat contact resistance 112 resistance of fuel level sensor is 0, illustrate that fuel level sensor and fuel pump thereof are not corroded by fuel oil to a certain extent.
When the difference of U2-U1 increases, illustrates that the resistance of rheostat contact resistance 112 is that Rcontact is increasing, represent degree that fuel level sensor and fuel pump thereof corroded by fuel oil to a certain extent in increase.
Embodiment described above is one of the present utility model preferably scheme, not this reality utility model is done any pro forma restriction, also has other variant and remodeling under the premise without departing from the technical scheme described in claim.
Claims (1)
- null1. a fault pre-alarming formula fuel pump，It is characterized in that，It includes motor casing，Oil-feed plate it is connected to bottom described motor casing，Motor casing top is connected to fuel-displaced end cap，It is provided with oil-feed plate retaining screw in the middle of bottom described oil-feed plate，Oil-feed plate retaining screw is provided above impeller，Impeller is provided above out oiled-plate method，Described go out to be provided with fuel-displaced board shaft in the middle of oiled-plate method and hold，On fuel-displaced board shaft bearing sleeve armature shaft below pump core，Armature shaft above described pump core is cased with Seat for electric appliances bearing，Described Seat for electric appliances bearing is cased with Seat for electric appliances，Choke coil assembly it is provided above on the left of described Seat for electric appliances，It is installed with magnetic core in choke coil assembly，Seat for electric appliances middle upper part is provided with brush，On the right side of Seat for electric appliances, top is connected with oil nozzle，Choke coil assembly is provided above electrode，Described fuel-displaced end cap covers on Seat for electric appliances，Described oil nozzle side is additionally provided with relief valve，Described pump core is also connected with oil level monitoring system，Described oil level monitoring system it include fuel level sensor circuit and observation circuit two parts，Wherein fuel level sensor circuit again by: rheostat and rheostat contact resistance two parts are constituted；Observation circuit by: fuel gauge electronic control unit, divider resistance and constant-current source power module are constituted, the contact resistance at described rheostat movable contact place electrically connects with fuel gauge electronic control unit, and contact resistance is connected with constant-current source power module also by divider resistance simultaneously；Described rheostat two ends except movable contact, wherein one end is connected with power supply, and other end, as the collection terminal of oil level signal, electrically connects with fuel gauge electronic control unit；The power supply of whole system is by the storage battery power supply of automobile, and the power supply of fuel level sensor is powered by constant-current source power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521107068.6U CN205370812U (en) | 2015-12-25 | 2015-12-25 | Trouble early -warning type fuel pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521107068.6U CN205370812U (en) | 2015-12-25 | 2015-12-25 | Trouble early -warning type fuel pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205370812U true CN205370812U (en) | 2016-07-06 |
Family
ID=56257535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521107068.6U Expired - Fee Related CN205370812U (en) | 2015-12-25 | 2015-12-25 | Trouble early -warning type fuel pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205370812U (en) |
-
2015
- 2015-12-25 CN CN201521107068.6U patent/CN205370812U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20191225 |