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Apparatus for controlling a hydraulic accumulator of a hydraulic system

A technology of hydraulic accumulator and hydraulic system, applied in accumulator device, fluid pressure actuating device, transmission device control and other directions, can solve problems such as moment jump, undesigned load, etc., achieve low power consumption, simple manufacture, The effect of wear and less susceptibility to contamination

Inactive Publication Date: 2013-06-05
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, undesired torque jumps occur when the clutch closes uncontrollably or slips / spins
Furthermore, the clutch is generally not designed for the loads that occur here

Method used

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  • Apparatus for controlling a hydraulic accumulator of a hydraulic system
  • Apparatus for controlling a hydraulic accumulator of a hydraulic system
  • Apparatus for controlling a hydraulic accumulator of a hydraulic system

Examples

Experimental program
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Embodiment Construction

[0064] figure 1 A simplified schematic diagram of the arrangement of the hydraulic accumulator 10 in the hydraulic system 12 of the automatic transmission 14 of the motor vehicle which is not explained in detail here is shown. The hydraulic accumulator 10 is here a pressure accumulator 10, which is connected to the remaining hydraulic system 16 by means of a device 20 explained in more detail below and via a hydraulic connection 18. The device 20 includes a valve mechanism 26 and can be electromagnetically actuated by the control and / or adjustment mechanism 21 of the motor vehicle by means of an output stage 22. This is shown symbolically by arrow 24. The device 20 has an interface A on the system side and an interface B on the storage side for exchanging fluids. The control and / or adjustment mechanism 21 may be, for example, a motor controller, a transmission controller, or other controllers of a motor vehicle.

[0065] Furthermore, the hydraulic system 12 exemplarily cited he...

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PUM

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Abstract

Described is an apparatus (20) for controlling a hydraulic accumulator (10) of a hydraulic system (12), for example of a vehicle gearbox (14), having a valve device (26) by means of which an accumulator-side port (B) of the apparatus (20) can be connected to and separated from a system-side port (A), wherein the valve device (26) comprises at least one valve main stage (56), said valve main stage being arranged hydraulically between the accumulator-side port (B) and the system-side port (A) and being acted on in the opening direction by a load-exerting means, preferably the pressure prevailing hydraulically at the accumulator-side port (B), and comprises an electrically actuated control valve (52) which can connect the system-side port (A) to a control port (X), which acts in the closing direction of the valve main stage (56), of the valve main stage (56); and to the accumulator-side port (B), wherein at least a first restrictor (60) is arranged between the control valve (52) and the accumulator-side port (B).

Description

Technical field [0001] The invention relates to a device according to the preamble of claim 1. Background technique [0002] The so-called start-stop function for motor vehicles is known from the market, by which the internal combustion engine can be automatically cut off by the controller when the motor vehicle is stopped. This can save fuel in the range of about 3% to about 5%. [0003] Automatic transmissions, such as stepped automatics, dual-clutch transmissions or continuously variable transmissions, are usually triggered hydraulically and require hydraulic pressure and hydraulic volume flow for operation. This hydraulic volume flow is provided by a mechanical pump, that is to say driven by an internal combustion engine, in which the linear dependence of the volume flow and the speed and the advance reserve for taking into account the idling speed of the internal combustion engine and the possible high oil temperature Pumps are usually designed to be oversized. [0004] The s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B1/027F15B13/043F16H61/00
CPCF16H61/0021F15B1/027F15B13/0431F16H61/0025F16H2061/0034F15B2201/411F16H61/0009F15B1/033Y10T137/86485
Inventor R.布洛克N.施泰因巴赫W.鲁多尔夫W.黑斯I.克拉斯特夫M.施塔歇利H.施奈德S.施特劳斯U.库洛夫C.奥特
Owner ROBERT BOSCH GMBH
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