EP3456981A1 - Pompe à fluide de refroidissement pour un circuit de fluide de refroidissement d'un moteur à combustion interne - Google Patents

Pompe à fluide de refroidissement pour un circuit de fluide de refroidissement d'un moteur à combustion interne Download PDF

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Publication number
EP3456981A1
EP3456981A1 EP18188429.7A EP18188429A EP3456981A1 EP 3456981 A1 EP3456981 A1 EP 3456981A1 EP 18188429 A EP18188429 A EP 18188429A EP 3456981 A1 EP3456981 A1 EP 3456981A1
Authority
EP
European Patent Office
Prior art keywords
coolant
pump
chamber
pump housing
impeller
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.)
Withdrawn
Application number
EP18188429.7A
Other languages
German (de)
English (en)
Inventor
Harald Sengstock
Martin Umbreit
Oliver Stegner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MAN Truck and Bus SE
Original Assignee
MAN Truck and Bus SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MAN Truck and Bus SE filed Critical MAN Truck and Bus SE
Publication of EP3456981A1 publication Critical patent/EP3456981A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/022—Units comprising pumps and their driving means containing a coupling a coupling allowing slip, e.g. torque converter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4293—Details of fluid inlet or outlet

Definitions

  • the invention relates to a coolant pump for a coolant circuit of an internal combustion engine according to the preamble of claim 1, an engine coolant circuit with the coolant pump according to claim 11 and a vehicle, in particular a commercial vehicle, with the engine coolant circuit according to claim 12.
  • coolant pump To dissipate the heat generated during operation of an internal combustion engine, coolant is pumped by the latter into a coolant circuit by means of a coolant pump arranged in coolant lines.
  • a generally well-known, used in particular for vehicles coolant pump has a pump housing and an impeller and an axial drive shaft with a drive pulley.
  • the drive shaft is tightly guided in the pump housing, wherein in the pump housing, the impeller is rotatably disposed in a pump chamber through the drive shaft.
  • the impeller chamber also has a suction-side, central, axial coolant inlet opening and a pressure-side radial coolant outlet opening on the pump housing.
  • the drive disc is usually designed as a mechanically driven by a crankshaft of the internal combustion engine pulley, which is directed in front of the front, especially in internal combustion engines in vehicles.
  • the coolant inlet opening on the pump housing is arranged in a known manner opposite to the drive pulley and aligned in the vehicle to the rear.
  • This conventional known coolant pump design requires by the widely spaced coolant connections, on the one hand to the mating drive side rear coolant inlet port and on the other hand, the radially laterally lying coolant outlet port, a complex and space-consuming guidance of the coolant connection lines.
  • the space requirement at the mating drive side is relatively large, since the coolant with a supply line must be shown at the rear of the pump housing.
  • especially on the suction side relatively long connecting lines with multiple deflections and consequent unfavorable flow and pressure losses required.
  • the object of the invention is therefore to propose a coolant pump for a coolant circuit of an internal combustion engine with which the routing of the coolant circuit in Area of the coolant pump with less space requirement is more cost effective and flow efficient feasible.
  • a coolant pump for a coolant circuit of an internal combustion engine comprising a pump housing, an impeller and an axial drive shaft with a drive disk, wherein the drive shaft is guided tightly into the pump housing, in which the impeller in an impeller chamber of the pump housing by the drive shaft rotatable is arranged, and the impeller has a suction-side, central axial coolant inlet opening and a pressure-side radial coolant outlet opening on the pump housing.
  • a further chamber is integrated as inflow chamber with a radial suction-side coolant inflow opening and with an axial central coolant overflow opening as the coolant inlet opening of the impeller chamber in that both the suction-side coolant inflow opening and the pressure-side coolant outlet opening are arranged radially on the outside of a pump housing peripheral wall.
  • the complex supply of coolant from the counter drive side can be omitted and the suction side coolant supply as well as the coolant discharge can be done in the range of the coolant pump straight with little deflections and relatively short lines.
  • the space requirement for the coolant pump, in particular at the counter drive side by the elimination of the hitherto attached there coolant supply ports is significantly smaller than before.
  • the advantage of the coolant pump design according to the invention is thus essentially in simpler, less expensive cable routing of the connecting lines with improved flow conditions in the coolant circuit and in a total smaller space requirement.
  • the relatively small space requirement is especially advantageous for vehicles, especially for commercial vehicles, because an available installation space is becoming smaller and smaller by an increasingly larger number of engine-side ancillaries.
  • the impeller chamber and the inflow chamber are substantially formed as flat cylindrical, coaxial and juxtaposed cans, which are fluidly connected by the central coolant overflow.
  • a circumferential and, in particular radially inward, open to the coolant overflow opening open annular channel is preferably formed in the inflow.
  • the drive shaft is guided through the inflow through the pump impeller into the pump chamber.
  • the annular channel of the inflow chamber can also have an inclined surface, directed in particular as a tapered surface, as the coolant guide surface, directed toward the central coolant overflow opening.
  • the coolant inlet opening and the coolant outlet opening are arranged with their line connections easily accessible side by side.
  • the drive disk can be a drive pulley with a circumferential profile in the usual way, in particular for a driven by a crankshaft of the engine toothed and / or V-belt.
  • the drive disk of the drive shaft but also part of a gear train, for example, be designed as a gear and possibly also electrically, hydraulically or pneumatically driven.
  • a viscous coupling in particular for a speed variation, can be arranged between the drive disk and the drive shaft.
  • the drive shaft projects through the drive pulley and protrudes from the drive pulley with a, in particular free, end region axially opposite to the inflow chamber, and that a rotational speed sensor for measuring the drive shaft rotational speed is assigned to this end region. In this way, the drive shaft speed can be measured easily and effectively.
  • the speed sensor is fixed to the pump housing. More preferably, the speed sensor is sealed by means of a sealing device arranged by the pump chamber in a, a receiving space forming recess of the pump housing or received.
  • the speed sensor can be easily and reliably arranged on the coolant pump.
  • an internal combustion engine coolant circuit is claimed with the coolant pump according to the invention.
  • a vehicle is claimed with the internal combustion engine coolant circuit according to the invention.
  • the single figure shows a cross section through a coolant pump 1 with a pump housing 2 and a drive shaft 3, on the one hand in the pump housing 2, a pump 4 is arranged as an impeller.
  • the drive shaft 3 is coupled outside of the pump housing 2 via a (schematically illustrated) viscous coupling 5 with a drive pulley 6.
  • the pump housing 2 contains two chambers, as first (seen from the drive side) an inflow chamber 7 and then second as a pump chamber. 8
  • the inflow chamber 7 and the impeller chamber 8 are formed as flat, cylindrical, coaxial and juxtaposed cans, which are fluidly connected to each other by a central coolant overflow opening 9.
  • the central drive shaft is visible via a seal 10 in and out through the inflow chamber 7 and connected in the pump chamber 8 with the impeller 4 for a rotary drive.
  • a circumferential annular channel 18 is formed, which has an executed to a coolant overflow opening 9 inclined surface 11 as a coolant-guide surface.
  • the coolant line connection elements and coolant lines in the area of the coolant pump 1 are shown schematically by the arrows 13 and 15.
  • the drive shaft 3 here projects through the drive pulley 6, such that the drive shaft 3 protrudes with a free end region 19 axially opposite the inflow chamber 7 from the drive pulley 6.
  • This free end portion 19 of the drive shaft 3 is here also a speed sensor 20 for measuring the drive shaft speed assigned.
  • the measured drive shaft speed is used here as an example for the control or regulation of the viscous coupling 5.
  • the speed sensor 20 is fixed here by way of example on the pump housing 2.
  • the speed sensor is here by means of a sealing device sealed from the pump chamber 8 in a, a receiving space forming recess 21 of the pump housing 2 is arranged.
  • the illustrated coolant pump 1 has the following function: when the impeller 4 is driven, coolant is drawn through the coolant inflow opening 12 (arrow 13) into the annular space 18 of the inflow chamber 7 and from there through the coolant overflow opening 9 into the impeller chamber 8 (see flow arrows 16, FIG. 17). From there, the coolant in the cooling circuit is conveyed via the coolant outlet opening 14 (see arrow 15). As can be seen, here the coolant inflow opening 12 and the coolant outlet opening 14 are axially adjacent to one another, so that connecting lines can be easily brought and mounted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP18188429.7A 2017-09-13 2018-08-10 Pompe à fluide de refroidissement pour un circuit de fluide de refroidissement d'un moteur à combustion interne Withdrawn EP3456981A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017121198.5A DE102017121198A1 (de) 2017-09-13 2017-09-13 Kühlmittelpumpe für einen Kühlmittelkreislauf einer Brennkraftmaschine

Publications (1)

Publication Number Publication Date
EP3456981A1 true EP3456981A1 (fr) 2019-03-20

Family

ID=63293944

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18188429.7A Withdrawn EP3456981A1 (fr) 2017-09-13 2018-08-10 Pompe à fluide de refroidissement pour un circuit de fluide de refroidissement d'un moteur à combustion interne

Country Status (2)

Country Link
EP (1) EP3456981A1 (fr)
DE (1) DE102017121198A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0071807A2 (fr) * 1981-08-03 1983-02-16 Deere & Company Système de refroidissement à liquide de moteur avec pompe rotative
DE19932359A1 (de) * 1998-07-30 2000-02-03 Behr Gmbh & Co Antrieb für eine Kühlmittelpumpe
DE10012663A1 (de) * 2000-03-15 2001-09-20 Geraete & Pumpenbau Gmbh Kühlmittelpumpe mit elektrisch kommutiertem Eletromotor
DE10018721A1 (de) * 2000-04-15 2001-10-18 Geraete & Pumpenbau Gmbh Regelbare Kühlmittelpumpe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734457A (en) * 1956-02-14 fernstrum
US3126832A (en) * 1964-03-31 Mencarelli
CH259921A (de) * 1946-01-31 1949-02-15 Ford Motor Co Zentrifugalpumpe.
GB1013341A (en) * 1961-02-02 1965-12-15 Tetmark Patents Ltd Improvements in volute pumps, turbines and the like
US3367273A (en) * 1966-02-15 1968-02-06 Dodson Walter Rotary fluid pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0071807A2 (fr) * 1981-08-03 1983-02-16 Deere & Company Système de refroidissement à liquide de moteur avec pompe rotative
DE19932359A1 (de) * 1998-07-30 2000-02-03 Behr Gmbh & Co Antrieb für eine Kühlmittelpumpe
DE10012663A1 (de) * 2000-03-15 2001-09-20 Geraete & Pumpenbau Gmbh Kühlmittelpumpe mit elektrisch kommutiertem Eletromotor
DE10018721A1 (de) * 2000-04-15 2001-10-18 Geraete & Pumpenbau Gmbh Regelbare Kühlmittelpumpe

Also Published As

Publication number Publication date
DE102017121198A1 (de) 2019-03-14

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