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Hydraulic reducer

A hydraulic reducer and pressure technology, applied in the field of hydraulic reducer, can solve the problems of rotor deceleration, rotor shaft deceleration, etc., and achieve the effect of reducing idling loss

Active Publication Date: 2019-08-06
ZF FRIEDRICHSHAFEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This leads to a deceleration of the rotor and thus also of the rotor shaft of the hydrodynamic retarder leading the rotor

Method used

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  • Hydraulic reducer
  • Hydraulic reducer

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Embodiment Construction

[0025] figure 1 A hydrodynamic retarder 1 according to a preferred embodiment of the invention is shown. The gear unit here consists of a stator 2 and a rotor 3 , whose mutually facing sides are each provided with a blade arrangement 4 or 5 and which delimit an annular working chamber 6 between them.

[0026] The rotor 3 is now arranged on a rotor shaft 7 which, in addition to the rotor 3, guides a spur gear 8 in which the rotor shaft 7 turns when the hydrodynamic retarder 1 is installed in the drive train of the motor vehicle In motion, it is coupled with an axially parallel shaft via the spur gear. Furthermore, bearings 9 and 10 are provided on both axial sides of the spur gear 8 , via which the rotor shaft 7 is rotatably mounted.

[0027] Additionally, as in figure 1 Neutralize in figure 2 As can be seen in the further sectional view in , the rotor 3 is coupled to the rotor shaft 7 via a mechanism 11 in the form of a driving tooth 12 which extends helically and is conn...

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Abstract

The present invention relates to a hydraulic reducer (1) comprising a stator (2) and a rotor (3) which are respectively provided with one blade arrangement (4, 5) on the side facing each other and between them lies the fluid. The rotor (3) is coupled to the rotor shaft (7) and is guided on the rotor shaft (7) in such a way as to be axially movable with respect to the stator (2) such that the blade arrangement (5) of the rotor pitch (x) of the blade arrangement (4) of the stator (2) can be varied. Means (11) are provided for transferring the rotor (3) to a position remote from the stator. The mechanism (11) now connects the rotor (3) to the rotor shaft (7) in the circumferential direction in order to enable a sudden drop in the braking power and will also generate a braking torque on the rotor (3) by introducing the fluid to an axial force acting in a direction away from the position of the stator. The invention also relates to a drive train for a motor vehicle having a speed reducer (1).

Description

technical field [0001] The invention relates to a hydrodynamic retarder comprising a stator and a rotor, each of which is equipped with a vane arrangement on the sides facing each other and between which a fluid can be introduced, wherein the rotor is coupled to the rotor shaft and Guided on the rotor shaft in a manner that can move relative to the stator in the axial direction, so that the distance between the blade arrangement of the rotor and the blade arrangement of the stator can be changed, and wherein the following mechanism is provided, through which the rotor can be moved to a distance from The position of the stator. Background technique [0002] Hydrodynamic retarders are used, in particular, as wear-free permanent brakes in drive trains of commercial vehicles and are used here to reduce the load on the individual service brakes, for example when driving on long downhill road sections. Conventionally, the hydrodynamic retarder is formed here from a rotor and a st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D57/02
CPCB60T1/087B60T10/02F16D57/04
Inventor 格奥尔格·埃格霍斯特·莱希森林
Owner ZF FRIEDRICHSHAFEN AG