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Device for the pulsed release of an amount of fluid which can be stored in an accumulator housing

A technology of storage box and fluid quantity, which is applied in the direction of fluid pressure actuation device, transmission device control, fluid pressure actuation system components, etc., can solve the problems of costly manufacturing and achieve the effect of minimizing the demand for structural space

Active Publication Date: 2012-07-11
HYDAC TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This known device is at least expensive to produce or requires a considerable installation space requirement, which is basically only rarely available in a motor vehicle to the desired extent.

Method used

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  • Device for the pulsed release of an amount of fluid which can be stored in an accumulator housing
  • Device for the pulsed release of an amount of fluid which can be stored in an accumulator housing
  • Device for the pulsed release of an amount of fluid which can be stored in an accumulator housing

Examples

Experimental program
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Embodiment Construction

[0028] figure 1 A device 1 for pulse-like release of a fluid quantity 3 that can be stored in a storage tank 2 is shown in . The device 1 is used to store a working medium for consumers of a hydraulic system (not shown in detail), for example for storing and pulsating hydraulic oil for a working cylinder of an automatic transmission of a passenger car. Other applications are conceivable here, in which in particular it is critical to obtain defined fluid quantities supplied in pulses.

[0029] The cylindrical storage box 2 has a first energy store 4 in the form of a cylindrical compression spring. The accumulator 4 is used to load the piston 5 with a predeterminable pressure sufficient to move the piston 5 from figure 1 The locked position shown in figure 2 ). Fluid volume 3 at piston 5 figure 1 The indicated positions are fed under pressure into the storage tank 2 by means of a fluid delivery device known per se, such as a rotary pump. The piston 5 is kept in the presse...

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Abstract

The invention relates to a device for the pulsed release of an amount of fluid (3) which can be stored in an accumulator housing (2), especially for allowing a start-stop function in automatic transmissions. Said device comprises a piston (5) which is supported by a first energy store (4), which can be displaced inside the accumulator housing (2), which, together with the accumulator housing, delimits the amount of fluid (3) that can be accommodated and which, when actuated by means of an actuator (6) and released by a locking device (7), ejects the amount of fluid (3) in a pulsed manner from the accumulator housing (2). The locking device (7) has individual detent means (8) that keep, when locked, the piston (5) in its prestressed position and that release, when actuated by the actuator (6), the piston (5) in a release position. The device is characterized in that the detent means (8), in every position of displacement of the piston (5), rest at least partially on an inner wall of the piston (5) facing them and in that the detent means (8) act upon the end section (9) of the piston (5) that is arranged adjacent to the stored amount of fluid (3) for locking the piston.

Description

technical field [0001] The invention relates to a device for the pulsed release of a fluid quantity that can be stored in a storage tank, in particular for the start-stop function in an automatic transmission, the device comprising a piston supported on a first accumulator, The piston is movable within the storage tank and together with the storage tank defines the volume of fluid that can be contained, and the piston is controlled by means of the operating device and released by the locking device to discharge the fluid volume from the storage tank in pulses, wherein the locking device has each Detent mechanisms which, in their locked position, hold the piston in its preloaded position, and which, in the disengaged position, are actuated by the actuating device to release the piston. Background technique [0002] In modern motor vehicles the internal combustion engine is switched off in suitable operating states for reasons of fuel saving and minimization of pollutant emiss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/00F15B1/24
CPCY02E60/15F15B2201/40F16H61/0021F15B1/24F15B2201/21F16H2061/0034F15B2201/31F16H2312/14F15B21/065Y02E60/16Y10T74/20024F16H61/0025
Inventor N·朗格N·韦伯
Owner HYDAC TECH GMBH
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