WO2012000487A1 - Kurbelwellenriemenscheibe - Google Patents
Kurbelwellenriemenscheibe Download PDFInfo
- Publication number
- WO2012000487A1 WO2012000487A1 PCT/DE2011/001375 DE2011001375W WO2012000487A1 WO 2012000487 A1 WO2012000487 A1 WO 2012000487A1 DE 2011001375 W DE2011001375 W DE 2011001375W WO 2012000487 A1 WO2012000487 A1 WO 2012000487A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- crankshaft
- crankshaft pulley
- braking device
- pulley
- planetary gear
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/32—Friction members
- F16H55/36—Pulleys
- F16H2055/366—Pulleys with means providing resilience or vibration damping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/46—Gearings having only two central gears, connected by orbital gears
- F16H3/48—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears
- F16H3/52—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears comprising orbital spur gears
- F16H3/54—Gearings having only two central gears, connected by orbital gears with single orbital gears or pairs of rigidly-connected orbital gears comprising orbital spur gears one of the central gears being internally toothed and the other externally toothed
Definitions
- the invention relates to a crank pulley for transmitting a torque between a crankshaft and a belt drive, with at least one freewheel and a transmission.
- German Patent Application DE 10 2007 021 233 A1 discloses a drive train for a motor vehicle having a power transmission unit which has two freewheels acting in opposite directions and a planetary gear.
- the object of the invention is to further optimize a crankshaft pulley according to the preamble of claim 1, in particular with regard to different operating functions and / or the required installation space.
- the object is achieved in a crankshaft pulley for transmitting a torque between a crankshaft and a belt drive, with at least one freewheel and a transmission, characterized in that the transmission is combined in the crankshaft pulley with a braking device.
- the braking device different modes, for example, a starter generator and a stationary air conditioning can be realized in a simple manner.
- the braking device allows a decoupling of the planetary gear in certain operating conditions, such as the stationary air conditioning.
- the braking device is designed as a frictional magnetic brake or electric brake.
- the braking device preferably comprises a coil carrier with a coil which generates a magnetic field when it is energized. As a result of the magnetic field, an armature of the braking device can be attracted as needed to close the braking device.
- the transmission is activated or deactivated as required by closing the brake device.
- the crankshaft pulley is characterized in that the braking device comprises a movable yoke body and a stationary coil carrier, which constitutes a first friction partner of the braking device.
- the bobbin serves to receive the coil of the braking device. Fixed means that the bobbin is fixed relative to the crankshaft pulley. For this purpose, the bobbin on a supporting structure, for example on a crankcase, outside attached to the crankshaft pulley.
- the fixed coil support provides the advantage that no rotary feedthrough is required for the voltage supply of the coil.
- crankshaft pulley is characterized in that at least one axial and / or at least one radial air gap is / are formed between the yoke body and the coil carrier.
- the air gaps between the rotating yoke body and the fixed bobbin are preferably designed so that no large attractive magnetic force between the yoke body and the bobbin can adjust. This can be achieved, for example, by keeping the axial air gap or the axial air gaps large relative to the radial air gap or the radial air gaps.
- the magnetic forces in the radial direction cancel out over the circumference and produce no relative movement between the yoke body and the coil carrier.
- the terms radial and axial refer to a rotational axis of the crankshaft pulley.
- Axial means in the direction or parallel to the axis of rotation.
- Radial means transverse to the axis of rotation.
- crankshaft pulley comprises an anchor body, which constitutes a second friction partner of the braking device.
- the anchor body is movable in the crankshaft pulley in the axial direction on the fixed bobbin to close the braking device. When the brake device is closed, the anchor body, that is, the anchor body does not rotate.
- crankshaft pulley is characterized in that the transmission is designed as a planetary gear with a ring gear, which is combined with the anchor body of the braking device.
- the ring gear is integrally connected to the anchor body.
- anchor body and ring gear can also be designed as separate parts, which are firmly connected to one another by material engagement or with the aid of fastening elements.
- crankshaft pulley is characterized in that the anchor body is spaced from the coil carrier in the de-energized state of a coil of the braking device.
- the braking device is normally preferably open.
- the planetary gear is activated by means of the braking device.
- crank pulley is characterized in that the yoke body forms an absorber mass. This can be dispensed with an additional absorber mass for the Kurbelwellentilger and built an integral, space-saving unit.
- crankshaft pulley is characterized in that the anchor body is braked with the ring gear in the energized state of the coil so that a belt track of the crank pulley is coupled via the planetary gear with the crankshaft.
- the activated by means of the braking device planetary gear can be provided in a simple manner required for starting the engine torque.
- crankshaft pulley comprises a pulley freewheel having an inner ring rotatably connected together with a planetary carrier of the planetary gear to the crankshaft, and having an outer ring which is rotatably connected to the belt track of the crankshaft pulley.
- the pulley freewheel effective between the crankshaft and the belt track serves to dampen torque in the operation of the crankshaft pulley.
- crankshaft pulley is characterized in that the outer ring of the pulley freewheel is combined with a sun gear of the planetary gear. Combined means that the outer ring of the pulley freewheel can be integrally connected to the sun gear of the planetary gear. But the outer ring can also be firmly bonded to the sun gear and with the help of fasteners.
- the invention further relates to a drive train of a motor vehicle, as disclosed, for example, in German Offenlegungsschrift DE 10 2007 021 233 A1.
- the power transmission unit described therein is replaced by the crankshaft pulley according to the invention.
- Figure 1 is a highly simplified representation of a drive train of a motor vehicle with a crankshaft pulley according to the invention
- FIG 2 is a detailed view of an embodiment of the crankshaft pulley of Figure 1 in longitudinal section.
- crankshaft pulley 1 is shown in various views.
- the crankshaft pulley 1 includes a pulley track 2, which is also referred to as a pulley or belt track for short, for example, for coupling a belt of a belt drive to a belt starter generator and / or at least one accessory such as an air conditioning compressor.
- the crankshaft pulley 1 is in the drive train of a motor vehicle, as disclosed for example in German Patent Application DE 10 2007 021 233 A1, mounted on a crankshaft 4, which is rotatable about a rotation axis 5.
- the motor vehicle may be a hybrid vehicle with an internal combustion engine and an electric machine, which is designed in particular as a generator.
- a hybrid vehicle may be driven solely by the internal combustion engine or solely by the electric machine.
- the crankshaft pulley drives a belt drive that includes, among other things, an air conditioning compressor and a starter generator.
- in the crankshaft pulley 1 is a pulley free run 6 integrated.
- the belt disk freewheel 6 is effective between the belt track 2 and the crankshaft 4.
- the belt pulley freewheel 6 serves to dampen torque shocks during operation of the crankshaft pulley.
- a Tilgermassenvic 7 is further integrated.
- the absorber mass carrier 7 is fixedly connected to the crankshaft 4.
- a damper mass 9 is mounted radially on the outside of the absorber mass carrier 7.
- the absorber mass 9 represents a crank shaft absorber which serves to prevent undesired torque fluctuations. ment vibrations, torque irregularities and / or torque shocks of the crankshaft pulley 4 to pay.
- a transmission 10 is further integrated, which is preferably designed as a planetary gear.
- the planetary gear 10 comprises a fixable on the housing ring gear 11. Housing solid means fixed. With the ring gear 11 meshing planet gears 12 which are rotatably mounted on a planet carrier 13. The planet gears 12 further mesh with a sun gear 14, which is integrated with the ring gear 11, the planet gears 12 and the planet carrier 13 in the crankshaft pulley 1.
- the Kurbtwellenriemen Computer 1 shown in Figures 1 and 2 comprises a braking device 20, which is designed as an electric brake, in particular as a frictional magnetic brake.
- the braking device 20 comprises a yoke body 21, which is formed by the absorber mass 9 according to one aspect of the present invention.
- the yoke body 21 is rotatable about the rotation axis 5 of the crankshaft pulley 1 relative to a fixed bobbin 22.
- the bobbin 22 carries a coil 23 and is fastened via a connecting element 24 to a crankcase 25 in the drive train of the motor vehicle.
- the fixed bobbin 22 represents a first friction partner of the brake device 20.
- An anchor body 28 represents a second friction partner of the brake device 20.
- the anchor body 28 is movable relative to the bobbin 22 in the axial direction.
- the anchor body 28 When the anchor body 28 is spaced axially from the stationary bobbin 22, the anchor body 28 may rotate relative to the bobbin 22. When the coil 23 is energized, an electromagnetic field is generated, which attracts the anchor body 28 so that the anchor body 28 is frictionally connected to the fixed coil carrier 22. Then the braking device 20 is closed and the anchor body 28 stands still. In the closed state of the braking device 20, the anchor body 28 is frictionally connected to the bobbin 22 and via the connecting element 24 fixed to the crankcase 25.
- the internal combustion engine which is also referred to as an internal combustion engine, in a so-called start / stop operation or in a purely electric driving a hybrid driving zeugs, resting, that is no torque outputs, then can be operated with the brake device 20 through the starter generator via the belt drive a connected air conditioning compressor for stationary air conditioning.
- the starter generator can set the crankshaft 4 in rotation via the belt drive and the planetary gear 10, whereby the internal combustion engine is started.
- the planetary gear 10 the provided via the belt drive by the starter generator torque is increased, whereby a cold start of the brake motor is made possible.
- the braking device 20 is opened again.
- the starter generator can be driven by the crankshaft 4 via the pulley free wheel 6. This operation is also referred to as regenerative operation. In this case, crankshaft vibrations are damped by the pulley freewheel 6.
- the pulley free-wheel 6 comprises an inner ring 41 and an outer ring 42.
- the inner ring 41 of the belt disk freewheel 6 is fastened to the crankshaft (not shown in FIG. 2) by means of a mounting screw 44.
- the outer ring 42 is rotatably supported by a rolling bearing 45 designed as a ball bearing on a screw head of the mounting screw 44.
- the outer ring 42 is rotatably supported by means of a designed as a roller bearing bearing 46 on the inner ring 41 of the pulley 10.
- the Tilgermassenarme 7 is attached to the inner ring 41 of the pulley freewheel 6. As a result, the Tilgermassenange 7 is firmly connected to the crankshaft.
- the planetary carrier 13 is also secured to the inner ring 41 of the pulley freewheel 6 via an axial connecting portion 48 and a radial flange 49. As a result, the planet carrier 13 is also firmly connected to the crankshaft.
- the damper mass 9, which constitutes the yoke body 21, comprises in the interior of the crankshaft pulley 1 an annular body 50 with a rectangular cross section.
- the ring body 50 extends coaxially with the coil 23 of the brake device 20.
- Radial air gaps 51, 52 and axial air gaps 53, 54 are formed between the yoke body 21 and the coil carrier 22.
- the air gaps 51 to 54 are designed in such a way that drove the braking device 20 does not set too great attracting magnetic force between the yoke body 21 and the bobbin 22. This is achieved in that the axial air gaps 53, 54 relative to the radial air gaps 51, 52 are made relatively large. The magnetic forces in the radial direction are irrelevant because they cancel each other over the circumference of the crankshaft pulley 1 and generate no unwanted force and thus movement.
- the outer ring 42 of the pulley free run 6 is connected via a connecting flange 60 fixed to the belt track 2.
- the belt track 2 is integrally connected to the connecting flange 60.
- the sun gear 14 of the planetary gear 10 is attached to the outer ring 42.
- the ring gear 11 of the planetary gear 10 is mounted radially inwardly on the anchor body 28 of the brake device 20.
- the anchor body 28 is slightly spring-loaded relative to the planetary carrier 13 in order to minimize drag losses occurring in the generator mode of the crankshaft pulley 1.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pulleys (AREA)
- Retarders (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112011102239T DE112011102239A5 (de) | 2010-06-29 | 2011-06-24 | Kurbelwellenriemenscheibe |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010025436 | 2010-06-29 | ||
| DE102010025436.3 | 2010-06-29 | ||
| DE102010027472.0 | 2010-07-16 | ||
| DE102010027472 | 2010-07-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012000487A1 true WO2012000487A1 (de) | 2012-01-05 |
Family
ID=44653927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2011/001375 Ceased WO2012000487A1 (de) | 2010-06-29 | 2011-06-24 | Kurbelwellenriemenscheibe |
Country Status (2)
| Country | Link |
|---|---|
| DE (2) | DE112011102239A5 (de) |
| WO (1) | WO2012000487A1 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012202308A1 (de) * | 2012-02-15 | 2013-08-22 | Iwis Motorsysteme Gmbh & Co. Kg | Getriebe sowie Verfahren zum Betreiben eines Getriebes |
| DE102013007997A1 (de) | 2013-05-08 | 2014-11-27 | Iwis Motorsysteme Gmbh & Co. Kg | Axiale Kupplungseinrichtung |
| US11092216B2 (en) * | 2018-09-25 | 2021-08-17 | Smc Corporation | Speed reduction ratio automatic switching device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3469473A (en) * | 1966-09-27 | 1969-09-30 | Daimler Benz Ag | Drive for auxiliary units of an internal combustion engine,especially in motor vehicles |
| EP0346743A2 (de) * | 1988-06-11 | 1989-12-20 | Pierburg Gmbh | Regelbarer Antrieb und Verfahren zu seiner Steuerung |
| EP1369279A1 (de) * | 2002-06-04 | 2003-12-10 | Mitsubishi Denki Kabushiki Kaisha | Getriebesteuereinrichtung für ein Fahrzeug |
| DE102007021233A1 (de) | 2006-05-17 | 2007-11-22 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Antriebsstrang, insbesondere für ein Kraftfahrzeug |
-
2011
- 2011-06-24 DE DE112011102239T patent/DE112011102239A5/de not_active Ceased
- 2011-06-24 DE DE201110105498 patent/DE102011105498A1/de not_active Withdrawn
- 2011-06-24 WO PCT/DE2011/001375 patent/WO2012000487A1/de not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3469473A (en) * | 1966-09-27 | 1969-09-30 | Daimler Benz Ag | Drive for auxiliary units of an internal combustion engine,especially in motor vehicles |
| DE1526560A1 (de) * | 1966-09-27 | 1970-04-02 | Daimler Benz Ag | Antrieb fuer Nebenaggregate einer Brennkraftmaschine,insbesondere in Kraftfahrzeugen |
| EP0346743A2 (de) * | 1988-06-11 | 1989-12-20 | Pierburg Gmbh | Regelbarer Antrieb und Verfahren zu seiner Steuerung |
| EP1369279A1 (de) * | 2002-06-04 | 2003-12-10 | Mitsubishi Denki Kabushiki Kaisha | Getriebesteuereinrichtung für ein Fahrzeug |
| DE102007021233A1 (de) | 2006-05-17 | 2007-11-22 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Antriebsstrang, insbesondere für ein Kraftfahrzeug |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012202308A1 (de) * | 2012-02-15 | 2013-08-22 | Iwis Motorsysteme Gmbh & Co. Kg | Getriebe sowie Verfahren zum Betreiben eines Getriebes |
| WO2013120602A1 (de) | 2012-02-15 | 2013-08-22 | Iwis Motorsysteme Gmbh & Co. Kg | Getriebe sowie verfahren zum betreiben eines getriebes |
| DE102012202308B4 (de) | 2012-02-15 | 2024-07-18 | Hochschule München | Steuergerät zum Ansteuern eines Getriebes, Einrichtung mit Getriebe und Steuergerät, Verfahren zum Betreiben eines Getriebes sowie Computerprogramm |
| DE102013007997A1 (de) | 2013-05-08 | 2014-11-27 | Iwis Motorsysteme Gmbh & Co. Kg | Axiale Kupplungseinrichtung |
| US11092216B2 (en) * | 2018-09-25 | 2021-08-17 | Smc Corporation | Speed reduction ratio automatic switching device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112011102239A5 (de) | 2013-05-02 |
| DE102011105498A1 (de) | 2012-03-08 |
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