US20130233257A1 - Mechanical coolant pump - Google Patents
Mechanical coolant pump Download PDFInfo
- Publication number
- US20130233257A1 US20130233257A1 US13/821,240 US201013821240A US2013233257A1 US 20130233257 A1 US20130233257 A1 US 20130233257A1 US 201013821240 A US201013821240 A US 201013821240A US 2013233257 A1 US2013233257 A1 US 2013233257A1
- Authority
- US
- United States
- Prior art keywords
- pump
- clutch disk
- shaft
- wheel shaft
- pump wheel
- 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.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
- F01P5/12—Pump-driving arrangements
-
- 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
- F04D13/04—Units comprising pumps and their driving means the pump being fluid driven
- F04D13/043—Units comprising pumps and their driving means the pump being fluid driven the pump wheel carrying the fluid driving means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2070/00—Details
- F01P2070/06—Using intake pressure as actuating fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/162—Controlling of coolant flow the coolant being liquid by thermostatic control by cutting in and out of pumps
Definitions
- the present invention relates to a mechanical coolant pump for an internal combustion engine.
- a mechanical coolant pump is a coolant pump which is driven by a combustion engine itself, for example, by using a driving belt driving a pulley-wheel of the coolant pump.
- the pulley-wheel drives the rotor shaft or a pump wheel, which is rotatably fixed at the rotor shaft.
- the rotational speed of such a coolant pump is proportional to the rotational speed of the engine's crankshaft so that the coolant pump runs permanently even if no coolant flow is needed by the engine.
- this unnecessarily increases the fuel consumption of the combustion engine.
- Switchable coolant pumps are therefore used to optimize the energy consumption of the system. Particularly for as long as the combustion engine is cold and no coolant flow is needed, the coolant pumps can be switched-off with the result that the combustion engine's warming-up phase is shortened, exhaust emission decreases, and fuel consumption reduced.
- a mechanical coolant pump of the prior art which is switchable is described in DE 10 2006 039 680 A1.
- the coolant pump is provided with an internal mechanical clutch which is arranged inside the pump housing.
- the mechanical clutch is provided by the pump wheel-sided end of the rotor shaft and the pump wheel so that the rotor shaft can be disengaged from the pump wheel, for example, in the warm-up phase of the combustion engine.
- the mechanical clutch of such a coolant pump is controlled by a separate external actuator which is connected to the opposite end of the rotor shaft.
- An external actuator requires additional installation space in the engine compartment.
- An aspect of the present invention is to provide a compact mechanical coolant pump.
- the present invention provides a mechanical coolant pump for an internal combustion engine which includes a pump housing configured to be stationary.
- the pump housing comprises an internal pneumatic actuator configured to be supplied by a pneumatic supply device.
- a pump wheel comprises a pump wheel shaft.
- the pump wheel shaft is configured to be rotatably supported by the pump housing.
- a driven shaft is directly connected to a pulley-wheel.
- An internal pneumatic clutch unit comprises a fixed clutch disk attached to the driven shaft or to the pump wheel shaft, and a slidable clutch disk configured to be axially slidably.
- the slidable clutch disk is arranged at the pump wheel shaft or at the driven shaft and is configured to be rotatably fixed to the pump wheel shaft or to the driven shaft.
- the internal pneumatic actuator is configured to axially actuate the slidable clutch disk.
- the driven shaft is connectable to the pump wheel shaft via the internal pneumatic clutch unit].
- FIG. 1 shows a cross-sectional view of a mechanical coolant pump.
- the mechanical coolant pump for an internal combustion engine comprises a stationary cylindrical pump housing with an internal pneumatic actuator which is supplied by a pneumatic supply means supplying a low-pressure, i.e., a pressure below atmospheric pressure.
- the pump further comprises a pump wheel rotatably fixed with a pump wheel shaft, whereby the pump wheel shaft is rotatably supported by the pump housing.
- the pump wheel shaft is connectable to a separate driven shaft by an internal pneumatic clutch unit, whereby the driven shaft is directly connected with a pulley-wheel which is driven by a driving belt.
- the internal clutch unit comprises a clutch disk which is completely fixed to the driven shaft or, alternatively, to the pump wheel shaft, and an axially slidable clutch disk which is slidably arranged at the pump wheel shaft or, alternatively, at the driven shaft.
- the slidable clutch disk is rotatably fixed to the pump wheel shaft or, alternatively, to the driven shaft and is axially actuated by the pneumatic actuator.
- the internal pneumatic actuator uses a low-pressure to actuate the clutch unit, more specifically, to actuate the slidable clutch disk.
- the low-pressure is supplied by the pneumatic supply means, more specifically, by the intake section of the combustion engine so that the coolant pump does not need an external actuator. This minimizes the size of such a switchable coolant pump so that the required installation space is minimized in comparison to a switchable coolant pump with a separate external actuator.
- the pump wheel shaft or, alternatively, the driven shaft can, for example, be provided with a longitudinal slide-bar at the clutch-sided end of the shaft. This end is defined by a reduced cross-section compared to the other part of the shaft.
- the slidable clutch disk is rotatably fixed by the slide-bar and slidably arranged at the slide-bar. The axial movement of the slidable clutch disk into the disengaged position is limited at the opposite end by a radial stopping face, for example, by a circular step in the shaft.
- the slidable clutch disk can, for example, be pretensioned into the engaged position by a pretensioning element, whereby the pretensioning element can, for example, be a compression spring.
- the pretension element can, for example, be supported by the shaft, for example, by a spring supporting plate which is fixed to the shaft.
- the spring supporting plate is a mechanical support of the pretensioning element.
- the pretensioning into the engaged position makes the pump fail-safe so that the operation or the cooling of the engine, respectively, is provided even if the actuator fails.
- the clutch can be disengaged when needed, for example, during the warm-up phase of the engine by the pneumatic actuator which is supplied by the pneumatic supply means.
- the pneumatic supply means comprises an intake section which supplies the low-pressure, a pneumatic valve, and a pneumatic control unit which controls the pneumatic valve.
- the internal pneumatic actuator can, for example, be defined by the slidable clutch disk and the pump housing.
- the clutch disk is an integral part of the pneumatic actuator.
- the pump housing can, for example, be provided with a pneumatic opening provided axially between the slidable clutch disk and the pump wheel or, alternatively, the pulley-wheel.
- the pneumatic opening is connected to the pneumatic supply means.
- the slidable clutch disk can be disengaged from the fixed clutch disk by using the internal pneumatic actuator which is supplied by the pneumatic supply means.
- the pneumatic actuator therefore acts against the force of the pretensioning element or the force of the compression spring, respectively.
- the circumference of the slidable clutch disk can, for example, be provided with a ring-like sealing element which seals the circular gap between the slidable clutch disk and the inner side wall of the circular pump housing.
- the sealing element provides an air-tight internal pneumatic actuator so that the slidable clutch disk can be disengaged from the fixed clutch disk by the pneumatic actuator or the low-pressure, respectively.
- the sealing element can be, for example, be a lip seal or a Teflon-element.
- the gap between the slidable clutch disk and the pump wheel shaft or, alternatively, the driven shaft can, for example, be provided with a shaft sealing so that the gap is closed gas-tight.
- the pneumatic actuator supplied with the low-pressure is therefore able to disengage the slidable clutch disk from the fixed clutch disk by using the pneumatic supply means.
- FIG. 1 shows a mechanical coolant pump 10 for providing a coolant to an internal combustion engine.
- the mechanical coolant pump 10 comprises a stationary circular pump housing 12 with an internal pneumatic actuator 13 , a pump wheel 18 with a pump wheel shaft 20 , and a separate driven shaft 22 connected directly with a pulley wheel 24 .
- the shafts 20 , 22 are rotatably supported at each axial end of the shafts 20 , 22 by a ball bearing 40 , 41 and a friction bearing 32 , 33 , respectively.
- the pump wheel shaft friction bearing 32 is a sealing arrangement sealing an internal pneumatic actuator 13 against the ambient pressure.
- the driven shaft 22 is connectable to the pump wheel shaft 20 via an internal pneumatic clutch unit 11 , which is positioned inside the pump housing 12 .
- the clutch unit 11 comprises a fixed clutch disk 26 which is attached completely fixed to the driven shaft 22 and an axially slidable clutch disk 28 which is arranged at the clutch-sided end of the pump wheel shaft 20 and which is axially actuated by the internal pneumatic actuator 13 .
- the clutch-sided end of the pump wheel shaft 20 provides a reduced cross-section diameter compared to the main portion of the pump wheel shaft 20 , and is provided with a longitudinal slide-bar 34 on which the slidable clutch disk 28 is axially slidable and rotatably fixed.
- the gap between the slidable clutch disk 28 and the pump wheel shaft 20 or the longitudinal slide-bar 34 , respectively, is closed by a shaft sealing 17 so that the gap is closed gas-tight.
- the axial movement of the slidable clutch disk 28 into the disengaged position is limited at the opposite end of the pump wheel shaft 20 by a radial stopping face 44 , for example, by a circular step in the shaft.
- the slidable clutch disk 28 is pretensioned into the engaged position by a pretensioning element 36 , whereby the pretensioning element 36 is a single compression spring which is positioned around the pump wheel shaft 20 .
- the compression spring 36 acts with a constant pressure on the thrust face 27 of the slidable clutch disk 28 so that no tilting moment is generated and jamming of the slidable clutch disk 28 with the inner side wall 30 of the pump housing 12 can be effectively avoided.
- the pretensioning element 36 is supported by the pump wheel shaft 20 via a spring supporting plate 42 which is completely fixed to the pump wheel shaft 20 .
- the circumference of the slidable clutch disk 28 is provided with a ring-like sealing element 38 .
- the sealing element 38 seals the circular gap between the inner side wall 30 of the circular pump housing 12 and the slidable clutch disk 28 .
- the internal pneumatic actuator 13 is defined by the slidable clutch disk 28 and the circular pump housing 12 .
- the internal pneumatic actuator 13 is arranged inside the pump housing 12 .
- the pump housing 12 is provided with a pneumatic opening 16 which connects the internal pneumatic actuator 13 with a pneumatic supply means 15 .
- the pneumatic supply means 15 comprises an intake section 45 which supplies the low-pressure, a pneumatic valve 19 and a pneumatic control unit 21 which controls the pneumatic valve 19 .
- the pneumatic opening 16 is axially positioned between the pump wheel 18 and the slidable clutch disk 28 so that the slidable clutch disk 28 can be disengaged by the internal pneumatic actuator 13 when needed, for example, during the warm-up phase of the cold combustion engine.
- the mechanical coolant pump 10 can be mounted directly to the engine block by a flange 48 .
Abstract
A mechanical coolant pump for an internal combustion engine includes a pump housing configured to be stationary. The pump housing comprises an internal pneumatic actuator supplied by a pneumatic supply device. A pump wheel comprises a pump wheel shaft. The pump wheel shaft is rotatably supported by the pump housing. A driven shaft is directly connected to a pulley-wheel. An internal pneumatic clutch unit comprises a fixed clutch disk attached to the driven shaft or to the pump wheel shaft, and an axially slidable clutch disk. The slidable clutch disk is arranged at the pump wheel shaft or at the driven shaft and is rotatably fixed to the pump wheel shaft or to the driven shaft. The internal pneumatic actuator axially actuates the slidable clutch disk. The driven shaft is connectable to the pump wheel shaft via the internal pneumatic clutch unit.
Description
- CROSS REFERENCE TO PRIOR APPLICATIONS
- This application is a U.S. National Phase application under 35 U.S.C. §371 of International Application No. PCT/EP2010/063123, filed on Sep. 7, 2010. The International Application was published in English on Mar. 15, 2012 as WO 2012/031624 A1 under PCT Article 21(2).
- The present invention relates to a mechanical coolant pump for an internal combustion engine.
- A mechanical coolant pump is a coolant pump which is driven by a combustion engine itself, for example, by using a driving belt driving a pulley-wheel of the coolant pump. The pulley-wheel drives the rotor shaft or a pump wheel, which is rotatably fixed at the rotor shaft. The rotational speed of such a coolant pump is proportional to the rotational speed of the engine's crankshaft so that the coolant pump runs permanently even if no coolant flow is needed by the engine. However, this unnecessarily increases the fuel consumption of the combustion engine. Switchable coolant pumps are therefore used to optimize the energy consumption of the system. Particularly for as long as the combustion engine is cold and no coolant flow is needed, the coolant pumps can be switched-off with the result that the combustion engine's warming-up phase is shortened, exhaust emission decreases, and fuel consumption reduced.
- A mechanical coolant pump of the prior art which is switchable is described in
DE 10 2006 039 680 A1. The coolant pump is provided with an internal mechanical clutch which is arranged inside the pump housing. The mechanical clutch is provided by the pump wheel-sided end of the rotor shaft and the pump wheel so that the rotor shaft can be disengaged from the pump wheel, for example, in the warm-up phase of the combustion engine. The mechanical clutch of such a coolant pump is controlled by a separate external actuator which is connected to the opposite end of the rotor shaft. An external actuator requires additional installation space in the engine compartment. - An aspect of the present invention is to provide a compact mechanical coolant pump.
- In an embodiment, the present invention provides a mechanical coolant pump for an internal combustion engine which includes a pump housing configured to be stationary. The pump housing comprises an internal pneumatic actuator configured to be supplied by a pneumatic supply device. A pump wheel comprises a pump wheel shaft. The pump wheel shaft is configured to be rotatably supported by the pump housing. A driven shaft is directly connected to a pulley-wheel. An internal pneumatic clutch unit comprises a fixed clutch disk attached to the driven shaft or to the pump wheel shaft, and a slidable clutch disk configured to be axially slidably. The slidable clutch disk is arranged at the pump wheel shaft or at the driven shaft and is configured to be rotatably fixed to the pump wheel shaft or to the driven shaft. The internal pneumatic actuator is configured to axially actuate the slidable clutch disk. The driven shaft is connectable to the pump wheel shaft via the internal pneumatic clutch unit].
- The present invention is described in greater detail below on the basis of embodiments and of the drawings in which:
-
FIG. 1 shows a cross-sectional view of a mechanical coolant pump. - The mechanical coolant pump for an internal combustion engine according of the present invention comprises a stationary cylindrical pump housing with an internal pneumatic actuator which is supplied by a pneumatic supply means supplying a low-pressure, i.e., a pressure below atmospheric pressure. The pump further comprises a pump wheel rotatably fixed with a pump wheel shaft, whereby the pump wheel shaft is rotatably supported by the pump housing. The pump wheel shaft is connectable to a separate driven shaft by an internal pneumatic clutch unit, whereby the driven shaft is directly connected with a pulley-wheel which is driven by a driving belt. The internal clutch unit comprises a clutch disk which is completely fixed to the driven shaft or, alternatively, to the pump wheel shaft, and an axially slidable clutch disk which is slidably arranged at the pump wheel shaft or, alternatively, at the driven shaft. The slidable clutch disk is rotatably fixed to the pump wheel shaft or, alternatively, to the driven shaft and is axially actuated by the pneumatic actuator.
- The internal pneumatic actuator uses a low-pressure to actuate the clutch unit, more specifically, to actuate the slidable clutch disk. The low-pressure is supplied by the pneumatic supply means, more specifically, by the intake section of the combustion engine so that the coolant pump does not need an external actuator. This minimizes the size of such a switchable coolant pump so that the required installation space is minimized in comparison to a switchable coolant pump with a separate external actuator.
- In an embodiment of the present invention, the pump wheel shaft or, alternatively, the driven shaft can, for example, be provided with a longitudinal slide-bar at the clutch-sided end of the shaft. This end is defined by a reduced cross-section compared to the other part of the shaft. The slidable clutch disk is rotatably fixed by the slide-bar and slidably arranged at the slide-bar. The axial movement of the slidable clutch disk into the disengaged position is limited at the opposite end by a radial stopping face, for example, by a circular step in the shaft.
- In an embodiment of the present invention, the slidable clutch disk can, for example, be pretensioned into the engaged position by a pretensioning element, whereby the pretensioning element can, for example, be a compression spring. The pretension element can, for example, be supported by the shaft, for example, by a spring supporting plate which is fixed to the shaft. The spring supporting plate is a mechanical support of the pretensioning element. The pretensioning into the engaged position makes the pump fail-safe so that the operation or the cooling of the engine, respectively, is provided even if the actuator fails. The clutch can be disengaged when needed, for example, during the warm-up phase of the engine by the pneumatic actuator which is supplied by the pneumatic supply means. The pneumatic supply means comprises an intake section which supplies the low-pressure, a pneumatic valve, and a pneumatic control unit which controls the pneumatic valve.
- In an embodiment of the present invention, the internal pneumatic actuator can, for example, be defined by the slidable clutch disk and the pump housing. The clutch disk is an integral part of the pneumatic actuator.
- In an embodiment of the present invention, the pump housing can, for example, be provided with a pneumatic opening provided axially between the slidable clutch disk and the pump wheel or, alternatively, the pulley-wheel. The pneumatic opening is connected to the pneumatic supply means. The slidable clutch disk can be disengaged from the fixed clutch disk by using the internal pneumatic actuator which is supplied by the pneumatic supply means. The pneumatic actuator therefore acts against the force of the pretensioning element or the force of the compression spring, respectively.
- In an embodiment of the present invention, the circumference of the slidable clutch disk can, for example, be provided with a ring-like sealing element which seals the circular gap between the slidable clutch disk and the inner side wall of the circular pump housing. The sealing element provides an air-tight internal pneumatic actuator so that the slidable clutch disk can be disengaged from the fixed clutch disk by the pneumatic actuator or the low-pressure, respectively. The sealing element can be, for example, be a lip seal or a Teflon-element.
- In an embodiment of the present invention, the gap between the slidable clutch disk and the pump wheel shaft or, alternatively, the driven shaft can, for example, be provided with a shaft sealing so that the gap is closed gas-tight. The pneumatic actuator supplied with the low-pressure is therefore able to disengage the slidable clutch disk from the fixed clutch disk by using the pneumatic supply means.
-
FIG. 1 shows amechanical coolant pump 10 for providing a coolant to an internal combustion engine. Themechanical coolant pump 10 comprises a stationarycircular pump housing 12 with an internalpneumatic actuator 13, apump wheel 18 with apump wheel shaft 20, and a separate drivenshaft 22 connected directly with apulley wheel 24. - The
shafts shafts pneumatic actuator 13 against the ambient pressure. - The driven
shaft 22 is connectable to thepump wheel shaft 20 via an internal pneumaticclutch unit 11, which is positioned inside thepump housing 12. Theclutch unit 11 comprises a fixedclutch disk 26 which is attached completely fixed to the drivenshaft 22 and an axially slidableclutch disk 28 which is arranged at the clutch-sided end of thepump wheel shaft 20 and which is axially actuated by the internalpneumatic actuator 13. - The clutch-sided end of the
pump wheel shaft 20 provides a reduced cross-section diameter compared to the main portion of thepump wheel shaft 20, and is provided with a longitudinal slide-bar 34 on which the slidableclutch disk 28 is axially slidable and rotatably fixed. The gap between the slidableclutch disk 28 and thepump wheel shaft 20 or the longitudinal slide-bar 34, respectively, is closed by a shaft sealing 17 so that the gap is closed gas-tight. The axial movement of the slidableclutch disk 28 into the disengaged position is limited at the opposite end of thepump wheel shaft 20 by aradial stopping face 44, for example, by a circular step in the shaft. - The slidable
clutch disk 28 is pretensioned into the engaged position by apretensioning element 36, whereby thepretensioning element 36 is a single compression spring which is positioned around thepump wheel shaft 20. Thecompression spring 36 acts with a constant pressure on the thrust face 27 of the slidableclutch disk 28 so that no tilting moment is generated and jamming of the slidableclutch disk 28 with theinner side wall 30 of thepump housing 12 can be effectively avoided. Thepretensioning element 36 is supported by thepump wheel shaft 20 via aspring supporting plate 42 which is completely fixed to thepump wheel shaft 20. - The circumference of the slidable
clutch disk 28 is provided with a ring-like sealing element 38. The sealingelement 38 seals the circular gap between theinner side wall 30 of thecircular pump housing 12 and the slidableclutch disk 28. - The internal
pneumatic actuator 13 is defined by the slidableclutch disk 28 and thecircular pump housing 12. The internalpneumatic actuator 13 is arranged inside thepump housing 12. Thepump housing 12 is provided with apneumatic opening 16 which connects the internalpneumatic actuator 13 with a pneumatic supply means 15. The pneumatic supply means 15 comprises anintake section 45 which supplies the low-pressure, apneumatic valve 19 and apneumatic control unit 21 which controls thepneumatic valve 19. Thepneumatic opening 16 is axially positioned between thepump wheel 18 and the slidableclutch disk 28 so that the slidableclutch disk 28 can be disengaged by the internalpneumatic actuator 13 when needed, for example, during the warm-up phase of the cold combustion engine. - The
mechanical coolant pump 10 can be mounted directly to the engine block by aflange 48. - The present invention is not limited to embodiments described herein; reference should be had to the appended claims.
Claims (10)
1-9. (canceled)
10. A mechanical coolant pump for an internal combustion engine, the mechanical coolant pump comprising:
a pump housing configured to be stationary, the pump housing comprising an internal pneumatic actuator configured to be supplied by a pneumatic supply device;
a pump wheel comprising a pump wheel shaft, the pump wheel shaft being configured to be rotatably supported by the pump housing;
a driven shaft directly connected to a pulley-wheel; and
an internal pneumatic clutch unit comprising:
a fixed clutch disk attached to the driven shaft or to the pump wheel shaft, and
a slidable clutch disk configured to be axially slidably, the slidable clutch disk being arranged at the pump wheel shaft or at the driven shaft and being configured to be rotatably fixed to the pump wheel shaft or to the driven shaft,
wherein the internal pneumatic actuator is configured to axially actuate the slidable clutch disk, and
wherein the driven shaft is connectable to the pump wheel shaft via the internal pneumatic clutch unit.
11. The mechanical coolant pump as recited in claim 10 , wherein the internal pneumatic actuator is defined by the slidable clutch disk and the pump housing.
12. The mechanical coolant pump as recited in claim 10 , wherein the pump wheel shaft or the driven shaft comprises a slide bar at a clutch-sided end, the slidable clutch disk being slidably arranged at the slide bar and configured to be rotatably fixed by the slide bar.
13. The mechanical coolant pump as recited in claim 10 , further comprising a pretensioning element, the pretensioning element being configured to pretention the slidable clutch disk into an engaged position by
14. The mechanical coolant pump as recited in claim 13 , wherein the pretensioning element is supported by the pump wheel shaft or by the driven shaft.
15. The mechanical coolant pump as recited in claim 13 , wherein the pretensioning element is a compression spring.
16. The mechanical coolant pump as recited in claim 10 , wherein the pump housing further comprises a pneumatic opening arranged between the slidable clutch disk and the pump wheel or the pulley-wheel, the pneumatic opening being connected to the pneumatic supply device.
17. The mechanical coolant pump as recited in claim 10 , wherein the pump housing further comprises an inner side wall, the slidable clutch disk comprises a circumference with a ring-like sealing element, and further comprising a circular gap arranged between the slidable clutch disk and the inner side wall of the pump housing, wherein the ring-like sealing element is configured to seal the circular gap between the slidable clutch disk and the inner side wall of the pump housing.
18. The mechanical coolant pump as recited in claim 10 , further comprising a shaft sealing arranged between the slidable clutch disk and the pump wheel shaft.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2010/063123 WO2012031624A1 (en) | 2010-09-07 | 2010-09-07 | Mechanical coolant pump |
Publications (1)
Publication Number | Publication Date |
---|---|
US20130233257A1 true US20130233257A1 (en) | 2013-09-12 |
Family
ID=44012362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/821,240 Abandoned US20130233257A1 (en) | 2010-09-07 | 2010-09-07 | Mechanical coolant pump |
Country Status (4)
Country | Link |
---|---|
US (1) | US20130233257A1 (en) |
EP (1) | EP2614233A1 (en) |
CN (1) | CN103201475A (en) |
WO (1) | WO2012031624A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6007303A (en) * | 1997-01-22 | 1999-12-28 | Schmidt; Eugen | Controllable coolant pump for motor vehicles |
US6644933B2 (en) * | 2002-01-02 | 2003-11-11 | Borgwarner, Inc. | Water pump with electronically controlled viscous coupling drive |
US20090022606A1 (en) * | 2006-12-27 | 2009-01-22 | Kyosuke Togawa | Water Pump |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3651083B2 (en) * | 1995-09-27 | 2005-05-25 | アイシン精機株式会社 | Automotive engine water cooling system |
DE10013252A1 (en) * | 2000-03-17 | 2001-10-25 | Audi Ag | Refrigerant pump for vehicle internal combustion engine; has mechanically driven impeller coupled by friction coupling closed by spring and opened hydraulically, electromagnetically or pneumatically |
DE102006039680A1 (en) | 2006-08-24 | 2008-02-28 | Audi Ag | Coolant pump for cooling circuit of internal combustion engine, has adjustable clutch arranged at opposite front end of pump shaft, between pump shaft and pump impeller |
JP2008185003A (en) * | 2007-01-31 | 2008-08-14 | Toyota Motor Corp | Power transmitting mechanism and water pump which is provided with it |
JP4297946B2 (en) * | 2007-03-20 | 2009-07-15 | トヨタ自動車株式会社 | Pressure operating mechanism and water pump provided with the pressure operating mechanism |
JP2009024632A (en) * | 2007-07-20 | 2009-02-05 | Toyota Motor Corp | Water pump |
CN201090630Y (en) * | 2007-09-19 | 2008-07-23 | 薛宗浩 | Pneumatic engaging and disengaging gear for automobile |
IT1399003B1 (en) * | 2010-03-25 | 2013-03-28 | Dayco Europe Srl | PULLEY UNIT DISABLED PREFERABLY FOR COMMANDING AN ACCESSORY DEVICE FOR AN INTERNAL COMBUSTION ENGINE. |
-
2010
- 2010-09-07 CN CN2010800700193A patent/CN103201475A/en active Pending
- 2010-09-07 EP EP10752794.7A patent/EP2614233A1/en not_active Withdrawn
- 2010-09-07 WO PCT/EP2010/063123 patent/WO2012031624A1/en active Application Filing
- 2010-09-07 US US13/821,240 patent/US20130233257A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6007303A (en) * | 1997-01-22 | 1999-12-28 | Schmidt; Eugen | Controllable coolant pump for motor vehicles |
US6644933B2 (en) * | 2002-01-02 | 2003-11-11 | Borgwarner, Inc. | Water pump with electronically controlled viscous coupling drive |
US20090022606A1 (en) * | 2006-12-27 | 2009-01-22 | Kyosuke Togawa | Water Pump |
Also Published As
Publication number | Publication date |
---|---|
EP2614233A1 (en) | 2013-07-17 |
CN103201475A (en) | 2013-07-10 |
WO2012031624A1 (en) | 2012-03-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: PIERBURG PUMP TECHNOLOGY GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DURAND, JEAN-MICHEL, MR.;REEL/FRAME:030451/0454 Effective date: 20130504 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |