Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • 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
  • F02M37/04—Feeding by means of driven pumps
  • F02M37/08—Feeding by means of driven pumps electrically driven
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
  • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
  • F04B49/06—Control using electricity
  • F04B49/065—Control using electricity and making use of computers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B51/00—Testing machines, pumps, or pumping installations
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B2203/00—Motor parameters
  • F04B2203/02—Motor parameters of rotating electric motors
  • F04B2203/0201—Current
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B2203/00—Motor parameters
  • F04B2203/02—Motor parameters of rotating electric motors
  • F04B2203/0209—Rotational speed

Definitions

• the present invention relates to a pressure control and a limitation for fluid pumps.
• an apparatus and method relates to for detecting an operating pressure of a fluid pump for a motor vehicle.
• a first aspect of the present invention relates to a device for detecting an operating pressure of a fluid pump for a motor vehicle, wherein the device comprises: a Drehzah ⁇ ler signeds worn, which is adapted to detect a rotation ⁇ number of the fluid pump; a pump flow sensing device configured to detect a flow of the fluid pump; a memory device designed for this purpose is to store a pump flow-speed characteristic field with at least ei ⁇ nem pressure reference point; , on the detected rotational speed, the current and the stored detected pumping current-speed characteristic curves to determine a center of the printer and ⁇ averaging means which is adapted based a prevailing in the fluid pump fluid pressure.
• current as used by the present invention also includes a pumping current as stored in the pumping current-speed characteristic map.
• the present invention relates to a fluid pump for a motor vehicle, wherein the fluid pump comprises a device according to the first aspect or according to any embodiment of the first aspect.
• a method for detecting an operating pressure of a Fluidpum ⁇ pe for a motor vehicle comprising the steps of: detecting a rotational speed of the fluid pump by means of a rotational speed detecting means; Detecting a pumping current of the fluid pump by means of a pump current detecting device; From ⁇ store a pump current-speed characteristic field with at least ⁇ least one or two pressure reference points by means of a memory means; and determining a prevailing in the fluid pump fluid pressure ⁇ based on the detected speed, the detected current and the stored pump current-rotating ⁇ number characteristic field by means of a printer means.
• the present invention advantageously allows to provide two or more additional points of reference for the phase current of a Flu ⁇ idpumpe at a known fluid pressure.
• the present invention enables a first additional reference point to be determined when the The pump speed is, for example, again increased by a precise ⁇ predetermined value after the opening point in ⁇ play, the point A, a Kalibrierventils is achieved.
• the present invention enables, for example, advantageous ⁇ way, the speed-dependent increase of the volume flow, that is, the slope of the flow characteristic of the fluid pump, store at ge ⁇ interviewedem pressure and to be deposited.
• the pressure regulator has a small and well-known example, volumenstromab- dependent slope, wherein the pressure of the pressure regulator with the Vo ⁇ volume flow increases.
• the present invention now performs be ⁇ knew increase of the volume flow by an increase in speed and can attribute the pump current then determined a limited hours ⁇ th fluid pressure.
• the apparatus further comprises a Rege ⁇ averaging means which is adapted to provide based on the determined fluid pressure, a pressure control for the Flu ⁇ idpumpe.
• the apparatus therefor is ⁇ puts to use a reference valve in order to determine the at least one pressure reference point of the pump current-speed characteristic ⁇ field and (2013)spei in the storage device ⁇ manuals.
• the device is adapted.
• the apparatus therefor is ⁇ inserted to determine further pressure reference points of the pump current-speed characteristic curves and further to determine a speed-dependent increase in the volume flow of the fluid pump.
• the Druckerstoffungsein ⁇ direction is adapted also based on a detected fuel temperature or a detected, the fuel ⁇ quality parameters describing or a detected force ⁇ stoffeinsprit zvolumina the fluid pressure to investigate.
• the Druckerstoffungsein ⁇ direction is adapted, further utilizing a handenen before ⁇ switching point of a coupled with the fluid pump pressure switch a spreading of the fluid pressure in the pump ⁇ current-speed characteristic curves to determine.
• the memory device is adapted to store the pump current-speed characteristic curves with the spreading of the fluid pressure.
• FIG. 1 is a schematic representation of an apparatus for detecting an operating pressure of a fluid pump according to an embodiment of the present invention
• FIG. 1 is a schematic representation of a flowchart of a method for detecting an operating pressure of a fluid pump for a motor vehicle according to another embodiment of the present invention
• FIG. 1 is a schematic representation of a fluid pump for a motor vehicle according to another advantageous embodiment of the present invention
• Fig. 4 is a schematic representation of a current consumption-speed diagram for a fluid pump for explaining the present invention
• a schematic representation of a power consumption-speed diagram of a fluid pump for a motor driving tool to explain the present invention for example for a fuel pump
• Fig. 6 is a schematic representation of a Stroming- speed diagram, a fluid pump for a motor driving ⁇ imaging to illustrate the invention
• Fig. 7 is a schematic representation of a Stroming- speed diagram, a fluid pump for a motor driving ⁇ imaging to illustrate the present invention.
• Fig. 1 shows a schematic representation of a Vorrich- processing for detecting an operating pressure of a fluid pump for a motor vehicle according to an embodiment of the present invention ⁇ .
• a device 1 for detecting an operating pressure of a Flu- idpumpe 100 for an automotive vehicle 2 comprises, for example, a rotational speed detection means 10, a Pumpenstromer resets- device 20, a storage device 30, a center of the printer ⁇ averaging means 40 and control means 50. Further, the control device 50 even in a other control unit can be executed.
• the regulation device 50 can be used, for example, directly or z. B. via a vehicle ⁇ bus system z. B. CAN be connected to the device.
• the speed detection device 10 is designed, for example, to detect a rotational speed of the fluid pump 100.
• the pump current detection device 20 is designed, for example, to detect a pump current of the fluid pump 100.
• the storage device 30 is for example adapted to store a pump current-speed characteristic field with at least one pressure reference point or with at least two pressure reference point ⁇ th.
• the printer averaging means 40 is for example configured to determine, based on the detected rotational speed, the detected pump current and the stored pump current-speed characteristic curves ⁇ a prevailing in the fluid pump 100 Flu- iddruck.
• the control device 50 is designed, for example, to provide pressure regulation for the fluid pump 100 based on the determined fluid pressure.
• FIG. 2 shows a schematic representation of a method for detecting an operating pressure of a fluid pump 100 for a motor vehicle 2.
• the method comprises, for example, the following steps:
• a detection Sl of a rotational speed of the fluid pump 100 by means of a rotational speed detection device 10 takes place.
• a detection S2 of a pump flow of the fluid pump 100 by means of a pump current detection means 20 As a third step of the method, for example, a storage S3 S3 a pump flow-speed characteristic field with at least one pressure reference point by means of a Spei ⁇ cher worn 30 takes place. As a fourth step of the method, for example, determining S4 of a prevailing in the fluid pump 100 fluid pressure based on the detected speed, the detected pump current and the stored pump current-speed characteristic field by means of a printer means means 40th
• An opening pressure of the reference valve is bar, for example, at 8, a pump current is, for example 11 A, a Volu ⁇ volume flow, which the following pump is promoted, is ⁇ play, at 10 1 / h, a speed of the fluid pump is ⁇ play, at about 3000 revolutions / min. Subsequently, for example, the speed of the fluid pump, for example, increased to 5000 revolutions / min, the volume ⁇ flow increases to 100 1 / h, the opening pressure of the reference valve can then be calculated to 8.1 bar, a pump current of 12 A is measured.
• the slope of the whole Fel ⁇ can now be determined by the speed. If the method is repeated with several speeds in defined steps, a curvature of the current curves can also be determined.
• the ISIN field pump current-speed characteristic curves can be adjusted on the basis of this re ⁇ ference points.
• FIG. 3 shows a schematic representation of a fluid pump according to a further embodiment of the present invention.
• a fluid pump 100 for a motor vehicle 2 comprises example ⁇ , a device 1 as the pump control electronics and electrical ei ⁇ ne combustion engine 110. Furthermore, the fluid pump comprising 100, a mechanical pump stage 120 which is coupled via a shaft.
• FIG. 4 shows a schematic representation of a current consumption-speed diagram for explaining the invention.
• FIG. 4 shows a schematic representation of Stromaufnah me a fluid pump over the speed, depending on the respective system pressure PO to P4. Furthermore, the Fig. 4 shows an examplary ⁇ specific representation of the threshold curves P2 and P3, which are used in ⁇ playing manner for warning messages, that is be ⁇ there is the system pressure above this as permissible in ⁇ the limit values, an appropriate warning message.
• FIG. 5 shows a schematic representation of the characteristic curve of the pump current over the rotational speed when using a reference valve Refe ⁇ .
• the opening point of the calibration valve "A" is determined in a known method as a reference value and used to improve the system accuracy.
• Fig. 6 shows a schematic representation of the characteristic curve of the pump current as the rotational speed when using a Refe rence ⁇ valve.
• the opening point of the Kalibrierventils "A" is determined in a known method as a reference value.
• the to ⁇ additional determination and advantageous use of the points B0, Bl, B2, and other points is made possible by the present invention.
• the point CO is controlled by the switching a pressurized ⁇ switch determines, as also by the present inventions PHg advantageously used, as indicated by the name "switching ⁇ point reference switch".
• Fig. 7 shows a schematic representation of the characteristic curve of the pump current as the rotational speed showing a Sprei ⁇ wetting characteristic of the field by a viscosity influence.
• the points Cl, C2 have been determined by switching the pressure switch at a switching pressure, but at different speeds or flow rates of the fluid pump. Likewise, further points can be determined by switching points of other switches.
• the present invention advantageously makes it possible to determine by Ermit ⁇ stuffs of a further reference point, the pitch of the Kennli ⁇ nienfelds on pressure, that is change in current over Drucktechnike ⁇ tion.
• a cost-effective pressure ⁇ switch is suitable, which closes in the workspace at a certain pressure and thus allows continuous tracking of Kenn ⁇ field expansion.
• the present invention allows when this pressure switch switches at a pressure that can be approached at any time and arbitrarily by the pump control or by the engine control even in the normal operation of the motor vehicle ⁇ .
• the working pressure can range from 2 to 7 bar, the core working range from 3 to 6 bar.
• the system pressure at ⁇ example increased to 6 bar. If the pressure switch is set to 4 bar, this switching point can be cyclically ⁇ periodically approached for referencing in most times of normal operation, without the mileage or the emission of carbon dioxide is affected.

Applications Claiming Priority (2)

Publications (1)

Family

ID=54478001

Family Applications (1)

Country Status (5)

Families Citing this family (7)

Family Cites Families (9)

• 2014
  • 2014-10-31 DE DE102014222335.0A patent/DE102014222335B4/de active Active
• 2015
  • 2015-10-21 EP EP15791259.3A patent/EP3212929A1/de not_active Withdrawn
  • 2015-10-21 CN CN201580067429.5A patent/CN107002645B/zh active Active
  • 2015-10-21 US US15/522,566 patent/US20180017050A1/en not_active Abandoned
  • 2015-10-21 WO PCT/EP2015/074408 patent/WO2016066504A1/de active Application Filing

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