Hydraulic Brake Assembly Throttle Element Springless Design
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Solution Overview
Problem
Existing hydraulic assemblies for vehicle brake systems with wheel slip control face issues due to pressure pulsation caused by cyclical fluid delivery, leading to reduced ride comfort and increased costs and complexity from the use of multiple components and precise throttle device production requirements.
Innovation Solution
The hydraulic assembly eliminates the need for a spring element by using a throttle element supported by two integrated supports on the pump mounting and cylinder sleeve, allowing adjustable throttling and damping characteristics through axial distance variation, cross-sectional shape, material choice, and geometry, reducing component count and assembly space while maintaining precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a spring element is used to pre-tension the throttle element, then the throttle device can maintain precise throttling characteristics, but the number of components increases and assembly complexity increases
Solution Approach 1:
The invention extracts and eliminates the spring element from the throttle device, replacing it with a direct mechanical pre-tensioning mechanism where the throttle element is pressed against the valve seat by the force generated during piston pump operation. This removes the need for separate spring components while maintaining the necessary pre-tensioning force for precise throttling control.
Solution Approach 2:
The invention merges the pre-tensioning function previously performed by a separate spring element into the operational force of the piston pump itself. The throttle element is integrated such that its pre-tensioning against the valve seat is achieved through the mechanical action of the piston pump, combining multiple functions into a unified mechanism that reduces component count.
2Manufacturing precision
If multiple separate components are used in the throttle device, then the throttling characteristic can be precisely controlled, but the assembly space increases and production costs increase
Solution Approach 1:
The invention combines multiple separate components (spring element, throttle element, valve seat, supporting structures) into an integrated throttle device where the piston pump structure itself provides the mounting and pre-tensioning functions. This merging reduces the overall volume occupied by the throttle device while maintaining precise throttling control through the integrated design.
Solution Approach 2:
The piston pump structure is designed to serve multiple functions: it generates hydraulic pressure, provides the mounting structure for the throttle device, and generates the pre-tensioning force for the throttle element. This multi-functionality eliminates the need for separate dedicated components, reducing assembly space and production costs while maintaining control precision.
3Adaptability or versatility
If a rigid throttle element with spring pre-tensioning is used, then the throttling characteristic can be adjusted, but the device complexity and production cost increase
Solution Approach 1:
The invention extracts the spring element from the design, eliminating the need for expensive precision spring manufacturing and assembly. The pre-tensioning force is instead generated through the mechanical operation of the piston pump, which reduces manufacturing complexity and cost while maintaining the ability to adjust throttling characteristics through the rigid throttle element's geometry and positioning.
Solution Approach 2:
The invention maintains adaptability of throttling characteristics by allowing adjustment of the rigid throttle element's geometry, positioning, and the valve seat configuration. These parameter changes provide the necessary versatility without requiring complex spring mechanisms, thereby reducing production cost while preserving adjustability.
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
This design reduces part and assembly costs, simplifies the assembly process, and provides flexibility in design and operation, effectively damping pressure pulsation without compromising throttling characteristics, thereby enhancing ride comfort and system efficiency.
Implementation Method 1
a throttle element (70) which interrupts a direct connection of the outlet (66) to the fluid delivery duct (68) and which forms a throttle cross section variable in its dimensions as a function of the pressure
Implementation Method 2
The throttle element (70) is composed of an elastic material, preferably of spring steel or plastic
Implementation Method 3
a pressure generator (16), in this case a piston pump, which is inserted into this pump mounting (14)
Data Source
AI summary
A hydraulic assembly, particularly for supplying a brake circuit of a vehicle brake system with fluid at brake pressure, includes a throttle element, which in the unpressurized state rests with an upper side on a first support and with an underside on a second support, the supports being formed on opposite sides of the gap. The throttle device advantageously dispenses with a spring element for axial pre-tensioning, is accordingly of compact and cost-effective construction and is moreover easy to assemble.