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Electrically-driven pressure regulator- and volume-delivery unit

A pressure and volume technology, applied in the direction of brakes, transportation and packaging, machines/engines, etc., can solve the problems of low reliability, achieve the effect of small mass/inertia, and avoid throttling loss

Active Publication Date: 2016-06-01
IPGATE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dynamic switching between forward and return is not proposed in DE201108003212, moreover the reliability of the principle of action is low for use as a pump operating in forward and return

Method used

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  • Electrically-driven pressure regulator- and volume-delivery unit
  • Electrically-driven pressure regulator- and volume-delivery unit
  • Electrically-driven pressure regulator- and volume-delivery unit

Examples

Experimental program
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Effect test

Embodiment Construction

[0044] Figure 1a shows the basic structure of a pressure regulation and volume delivery unit (hereinafter also referred to as pressure regulation unit), which consists of a piston 1 acting on both sides (hereinafter also referred to as double-pass piston), Said piston is displaceable on the path sk in both directions via the plunger 2 . The double-stroke piston 1 delimits a first pressure chamber 3 a with an effective surface A1 and a second pressure chamber 3 b with an effective surface A2 . The ratio of the cross-sections of the faces A1 and A2 is approximately 2:1, at least 1.5:1 and at most 2.5:1. This ratio corresponds approximately to the ratio between the maximum pressure and the typical operating pressure. The two chambers 3a, 3b are connected to the storage container 5 via non-return valves 4a and 4b. The non-return valve has a large opening cross-section, whereby throttling effects are avoided. Additionally, a switchable pressure compensation valve AV is provided...

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PUM

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Abstract

The invention relates to a pressure-volume delivery system comprising a piston-cylinder unit with a piston acting on both sides (dual-action reciprocating piston), said piston having at least two different active surfaces in corresponding pressure chambers and the pressure chambers being connected to at least one consumer via hydraulic lines. The delivery system also comprises a drive for the piston-cylinder unit. According to the invention, the pressure chambers and / or hydraulic lines are interconnected by means of at least one or more switching valves connected in parallel and having a large flow cross-section (AV) and via a short hydraulic line or lines with low flow resistance.

Description

technical field [0001] The invention relates to an electrically driven pressure regulation and volume delivery unit according to the preamble of claim 1 . Background technique [0002] Prior art is piston or gear pumps, which are usually driven by an internal combustion engine and deliver a volume flow that is permanently coupled to the rotational speed of the internal combustion engine. Embodiments of pumps for variable delivery performance are axial piston pumps with adjustable swash plate or variable vane pumps. For delivery as desired, the pump is electrically driven. [0003] The above-mentioned pumps are mechanically complex and complex in design and do not allow precise pressure regulation by motor position adjustment due to the relatively high leakage. [0004] Pumps are likewise known based on a double-stroke piston that delivers by forward and reverse movements (pump principle). The double-stroke piston is connected via two non-return valves to the storage conta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/40B60T13/74F04B5/02
CPCB60T8/267B60T8/326B60T8/328B60T8/4018B60T8/4081B60T13/686B60T13/745F04B17/044F04B19/20F04B49/12
Inventor 海因茨·莱贝尔托马斯·莱贝尔瓦伦丁·翁特尔弗罗纳
Owner IPGATE
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