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Tubular filters for piston pumps in vehicle brake systems

A technology for vehicle brakes and filters, which is applied to components, mechanical equipment, pumps, etc. of pumping devices for elastic fluids, and can solve problems such as adverse effects on closing performance, damage to valve seats and closing bodies, etc.

Inactive Publication Date: 2016-07-13
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dirt particles can adversely affect the closing performance of the valve and can also cause lasting damage to the corresponding valve seat and closing body

Method used

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  • Tubular filters for piston pumps in vehicle brake systems
  • Tubular filters for piston pumps in vehicle brake systems
  • Tubular filters for piston pumps in vehicle brake systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] figure 1 Piston pump 10 is partially shown, wherein piston 14 is displaceably mounted in cylinder 12 . The piston 14 can be figure 1 The right side is driven mechanically by an eccentric not shown.

[0022] The inlet line 16 leads radially through the cylinder 12 to an inlet channel 18 formed in the piston 14 . The incoming fluid, in this case brake fluid, passes from there through the inlet valve 20 into the pressure chamber 22 . refer to figure 1 , the pressure chamber 22 is located on the left side of the piston 14 . When the piston 14 moves, the pressure chamber 22 contracts, whereby the fluid is forced out of the cylinder 12 under pressure via a discharge valve (not shown).

[0023] The piston 14 is surrounded radially on the outside by a filter 24 which serves to filter the fluid supplied via the inlet line 16 and to prevent dirt particles from possibly entering the inlet valve 20 or the outlet valve. exist figure 1 On the right, therefore on the side of th...

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PUM

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Abstract

The invention relates to a tubular filter (40) of a piston pump (10) for a vehicle braking system for surrounding a displaceable piston (14). According to the invention, the tubular filter is provided with at least one axially acting spring element (48).

Description

technical field [0001] The invention relates to a tubular filter for a piston pump of a vehicle brake system for enclosing a movable piston. Furthermore, the invention relates to the use of such a tubular filter on a pump element of a piston pump for a vehicle brake system. Background technique [0002] Filters are used in hydraulic systems, especially on piston pumps of vehicle brake systems, to ensure that dirt particles are not transmitted to the corresponding inlet and outlet valves. Dirt particles can adversely affect the closing behavior of the valve and can also cause lasting damage to the corresponding valve seat and closing body. [0003] Axially, a sealing ring for the piston is arranged next to the tubular filter of such a piston pump. In addition to its filtering function, the filter here also has the function of placing the sealing ring in its intended position during assembly and holding it in this position. [0004] German patent document DE19902019A1 discl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B1/04F04B53/20F04B53/22
CPCF04B53/20F04B1/0404F04B53/22
Inventor O·格特纳W·舒勒
Owner ROBERT BOSCH GMBH