Drive train with a hydrodynamic retarder that can be decoupled and has a displacement sensor
A technology of hydraulic reducer and displacement sensor, applied in the field of drive train, can solve the problems of slow release clutch and wear and so on
Pending Publication Date: 2022-01-28
VOITH PATENT GMBH
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- Abstract
- Description
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- Application Information
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Problems solved by technology
A quick engagement of the separating clutch promotes wear, whereas a slow closing of the separating clutch is disadvantageous when the hydrodynamic retarder is switched on, since the braking power of the hydrodynamic retarder is supplied with a corresponding delay
Method used
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Embodiment Construction
[0027] figure 1A drive train, eg of a commercial vehicle, is shown schematically with a drive motor 17 and a transmission 18 driven by the drive motor 17 , the transmission having a transmission output shaft 19 via which drive wheels 20 are driven. The auxiliary output shaft of the transmission 18 forms the power input 5 for the hydrodynamic retarder 1 having a rotor 2 and a stator 3 which together form an annular working space 4 .
[0028] A separating clutch 6 is arranged in the drive connection between the power input 5 and the rotor 2 of the hydrodynamic retarder 1 in order to completely separate the hydrodynamic retarder 1 from the drive power flow and thus avoid idling losses.
[0029] In the closed state of the separating clutch 6 , the rotor 2 is driven in rotation about the axis of rotation via the transmission 18 , whereas in the disengaged state of the separating clutch 6 the rotor is at rest.
[0030] as in figure 2 As shown very schematically in , the separatin...
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The invention relates to a drive train having: a hydrodynamic retarder, which comprises a bladed rotor rotating about an axis of rotation and a bladed stator, which, together with the rotor, forms a working chamber for the hydrodynamic transfer of power from the rotor to the stator; a power input for feeding drive power to the hydrodynamic retarder; a disconnect clutch in a drive connection between the power input and the rotor of the hydrodynamic retarder, wherein: the disconnect clutch is designed as a synchronised clutch having two clutch halves, friction elements that can be brought into contact with each other and mechanical blocking elements; the friction elements are designed to equalise the rotational speed between the clutch halves, and the blocking elements are designed to lock the two clutch halves to each other in an interlocking manner; and the disconnect clutch comprises an actuator that can be displaced along a displacement path and can be displaced over a first initial displacement section, in order to bring the friction elements into mutual contact, and can be displaced over a second displacement section adjoining the first displacement section, in order to synchronise the two friction elements and thus the rotational speed of the clutch halves and to lock same together with the blocking elements. The drive train according to the invention is characterised in that at least one displacement sensor is provided, which directly or indirectly senses the displacement travelled by the actuator and / or the position of the actuator on the displacement path.
Description
technical field [0001] The invention relates to a drive train with a hydrodynamic retarder which can be disengaged by means of a separating clutch in order to avoid idling losses during non-braking operation. Background technique [0002] Hydrodynamic retarders are used in drive trains, for example motor vehicle drive trains, in particular commercial vehicle drive trains, as the invention relates in particular, to hydraulically decelerate the motor vehicle without wear. For this purpose, the hydrodynamic retarder has a bladed rotor rotating about an axis of rotation and a bladed stator, wherein, within the meaning of the invention, the stator can in principle also be embodied as a counter-rotating rotor, and wherein the rotor and the stator Together they form an annular working space which can be filled with a working medium in order to transmit the drive power hydraulically from the rotor to the stator by means of a hydraulic working medium circuit formed in the working spa...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F16D67/02F16D57/02F16D23/06F16D66/00
CPCF16D67/02F16D57/02F16D23/06F16D2066/003F16D2066/008B60T1/087B60T10/02F16D57/04F16H47/06F16H2061/0414
Inventor A.梅恩P.米勒D.劳克曼M.瓦塞尔曼
Owner VOITH PATENT GMBH