Piston Pump Throttle Disk Dampens Pressure Pulsations
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Solution Overview
Problem
Existing piston pumps in hydraulic vehicle brake systems suffer from noise-causing pressure pulsations, which are not adequately addressed by conventional damping methods.
Innovation Solution
A piston pump design featuring a throttle disk as an outlet-restricting element, integrated into a component with precise mounting and a spring mechanism, which deflects radially to provide controlled throttling and damping downstream of the outlet valve, reducing pressure pulsations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a throttle is provided downstream of the pressure medium outlet to dampen pressure pulsations, then pressure pulsations are reduced, but the throttle requires precise positioning and additional structural complexity
Solution Approach 1:
The throttle disk is designed to be deflectable rather than fixed, allowing it to dynamically adjust its position in response to pressure differences. The deflection from radial alignment creates the throttling effect while the flexibility eliminates the need for complex positioning mechanisms, resolving the contradiction between damping effectiveness and structural complexity
Solution Approach 2:
The throttle disk is implemented as a flexible, deflectable element that can bend under pressure load. This flexible thin disk structure achieves precise throttling control through its deflection behavior without requiring complex mechanical positioning systems, thereby reducing device complexity while maintaining effective pressure pulsation damping
2Object-affected harmful factors
If the throttle is deflected from radial alignment to create throttling effect, then pressure pulsations are dampened, but manufacturing precision requirements increase
Solution Approach 1:
The deflectable throttle disk serves itself by using the fluid pressure difference as the actuating force for its deflection. The system automatically adjusts the throttle opening based on operating conditions without requiring external control mechanisms, achieving precise opening pressure through self-regulation and reducing manufacturing precision requirements for complex control systems
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design effectively dampens pressure pulsations, achieving a precise opening pressure and optimized hydraulic resistance, thereby reducing noise and maintaining a compressible volume without additional complexity.
Implementation Method 1
The throttle disk bends due to the inflow or pressure difference
Implementation Method 2
The throttle serves to dampen pressure pulsations of the fluid conveyed by the piston pump
Implementation Method 3
A second holder for a spring is preferably additionally arranged or integrated in the component with the first holder for the outlet-restricting element
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
In a piston pump (10), in particular for a hydraulic assembly of an electronically controllable vehicle brake system, having a cylinder element (22), in which a pressure chamber (32) with an outlet is formed on the inside, an outlet-restricting element (42) is held on the outside of the cylinder element, on a component (38) by way of a first holder (40).