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Piston pump for conveying a fluid and associated braking system

A technology of piston pump and piston parts, which is applied to the components of pumping devices for elastic fluids, brakes, liquid fuel engines, etc., can solve the problems of weakening strength, etc. best results

Active Publication Date: 2012-12-12
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second piston part 2.2, which is designed as a valve seat, is therefore made of a stable part, preferably a metal part, and can only be weakened by the influence of the suction hole in the form of the transverse hole 3

Method used

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  • Piston pump for conveying a fluid and associated braking system
  • Piston pump for conveying a fluid and associated braking system
  • Piston pump for conveying a fluid and associated braking system

Examples

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Embodiment Construction

[0016] The piston pump according to the present invention can be used as an oil return pump in an automobile braking system, and it basically includes Figures 1 to 3 The same components as described in the conventional piston pump 1 . Therefore, here in order to avoid repetition, only the piston pump according to the invention and the piston pump according to the invention will be described in detail. Figures 1 to 3 The main difference of a traditional piston pump. with in accordance with Figures 1 to 3 Unlike the conventional piston pump 1 of the present invention, the piston pump according to the present invention includes an improved inlet valve combined with an improved piston assembly.

[0017] like Figure 4 As shown, similar to the conventional piston pump 1, the inlet valve 25 of the piston pump according to the invention comprises a cage 31 and a corresponding inlet valve seat 25.1, in which the inlet valve spring 25.2 is arranged and for example formed by sealing ...

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Abstract

The invention relates to a piston pump having a piston assembly including at least one cross bore and a longitudinal bore corresponding to the at least one transverse bore, a cylinder, into which the piston assembly is guided in a longitudinally movable manner, and an inlet valve with a cage element, in which an inlet valve spring and an inlet valve sealing element are disposed, and a corresponding inlet valve seat, which is disposed on the piston assembly. Fluid can be guided through the longitudinal bore into a compression chamber via the inlet valve. A return spring is disposed in the compression chamber for the piston assembly. The invention further relates to an associated braking system. The cage element has a resilient high-pressure sealing element that is configured to receive radially acting power components, and to effect a seal against a cylinder wall via a radial sealing surface, and in order to effect an axial seal against the piston assembly via an axial sealing surface.

Description

technical field [0001] The invention relates to a piston pump for conveying fluids according to the preamble of independent claim 1, which is used in particular in a brake system of a motor vehicle. Background technique [0002] This type of piston pump is preferably used as a return pump in vehicles with hydraulic or electrohydraulic vehicle braking systems for selectively lowering or raising the brake pressure in the wheel brake cylinders, whereby the wheel brakes can be adjusted brake pressure in the cylinder. Such regulation can be carried out, for example, in an antilock brake system (ABS), an anti-skid control system (ASR system), a driving dynamics control system, or the like. Figures 1 to 3 Shown is a conventional piston pump, which is used in automotive braking systems. like Figures 1 to 3 As shown, a conventional piston pump 1 includes a piston assembly 2 , an inlet valve 5 , an outlet valve 6 and a cylinder 8 . The piston assembly has a first piston part 2.1 an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B1/04F04B53/10
CPCF04B1/0452F04B53/10B60T8/4031F04B53/126F04B53/146
Inventor H·雅恩M·齐默尔曼
Owner ROBERT BOSCH GMBH
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