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Hydrodynamic retarder device

A hydraulic retarder and retarder technology, applied in hydraulic brakes, hydraulic resistance brakes, brakes, etc., can solve the problems of fluid remaining in the working space and failure of mechanical coupling elements.

Inactive Publication Date: 2018-02-16
SCANIA CV AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, if the vacuum pump fails, fluid may remain in the workspace when the rotor is connected to the power train
As a result, due to the high torque at the moment of connecting the rotor to the drive train, considerable stresses can be placed on the mechanical coupling elements between the rotor and the drive train, which can lead to failure of the mechanical coupling elements

Method used

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Examples

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Embodiment Construction

[0032] figure 1 A schematic side view of a vehicle 1 equipped with a retarder arrangement 2 according to the invention is shown. The vehicle 1 is also equipped with a power train 4 comprising a gearbox 6 connected to a combustion or / and electric engine 8 which provides drive to the drive wheels 10 of the vehicle 1 via the gearbox 6 and a drive shaft 12 torque. The drive wheels 10 are provided with wheel brakes 11 . The electronic control unit 16 is arranged for controlling the retarder 2 .

[0033] figure 2 A sectional view of a hydraulic retarder according to a first embodiment of the present invention is shown. The first shaft 18 is connected to the rotor 20 of the retarder 2 and the second shaft 22 is adapted to be connected to a drive source. according to figure 2 , the drive source is provided in the vehicle 1, wherein the connection of the retarder 2 to the vehicle 1 is performed through the gearbox 6, which thus constitutes the drive source. exist figure 2The...

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PUM

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Abstract

The invention relates to a hydrodynamic retarder device, comprising a rotor (20) and a stator (42) which together form a workspace (44) connected to a fluid circuit (49), and an expansion vessel (72)connected to the fluid circuit (49). A vacuum chamber (76) is connected to the workspace (44), which vacuum chamber (76) is arranged to remove fluid (46) from the workspace (44). The invention also relates to a vehicle (1) comprising such a hydrodynamic retarder device (2). The invention also relates to a method of controlling a hydrodynamic retarder device (2).

Description

technical field [0001] The invention relates to a retarder, a vehicle comprising such a retarder arrangement and a method for controlling a retarder arrangement according to the preambles of the appended independent claims. Background technique [0002] A hydraulic retarder device is provided to brake a drive source, such as a drive shaft in a vehicle. Usually the retarder is used as an auxiliary brake, which supplements the vehicle's wheel brakes. Excessive wear of the wheel brakes is thus avoided. [0003] A retarder consists of a rotor and a stator which together form a working space with an annular geometry. When braking torque from the retarder is required, the working space must be filled with fluid (such as water), coolant or oil as quickly as possible. Slow filling first results in a loss of braking torque from the retarder, which leads to overuse of the vehicle's wheel brakes as the wheel brakes are used to brake the vehicle before the retarder delivers the requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01P11/00B60T1/087B60T10/02
CPCB60T1/087B60T10/02F16D57/04
Inventor J·费尔姆
Owner SCANIA CV AB