Hydraulic Brake Valve Block Layout for Pressure Pulsation Damping
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Solution Overview
Problem
The existing hydraulic brake system valve blocks become complex and difficult to interchange when a damping device is installed, leading to increased size and cost due to changes in flow path structures.
Innovation Solution
A valve block design with symmetrically arranged bores for solenoid valves, damping devices, and hydraulic lines that maintain the same flow paths regardless of damping device installation, optimizing space and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a damping device is installed in the valve block to reduce pressure pulsation, then pressure pulsation is reduced, but the flow path structure changes making interchange between valve blocks with and without damping devices difficult
Solution Approach 1:
The valve block is designed with a universal bore structure that can accommodate both damping devices and non-damping configurations. The bore is positioned and dimensioned such that it serves as a flow path when no damping device is installed, and can receive a damping device when needed, without requiring changes to the valve block's flow path structure. This enables a single valve block design to fulfill multiple functions and be interchangeable between different configurations.
2Object-affected harmful factors
If a damping device is installed in the valve block, then pressure pulsation is reduced, but the overall structure becomes complicated and size increases
Solution Approach 1:
The damping device is integrated within the existing bore structure of the valve block, merging the damping function with the flow path structure. The bore that originally served solely as a flow path now simultaneously serves as the housing for the damping device, eliminating the need for separate damping device housings and reducing overall structural complexity.
Solution Approach 2:
The damping device is nested within the bore of the valve block, with the damping element positioned inside the bore space. This nested configuration allows the damping device to be compactly integrated into the existing valve block structure without increasing the external dimensions or requiring additional space, thereby reducing device complexity while maintaining the pressure pulsation reduction function.
3Object-affected harmful factors
If a damping device is installed in the valve block, then pressure pulsation is reduced, but manufacturing cost increases
Solution Approach 1:
The valve block is designed with a universal bore structure that serves dual purposes: as a flow path when no damping device is installed, and as a housing for the damping device when needed. This eliminates the need for separate damping device housings and complex flow path modifications, reducing manufacturing complexity and cost while enabling optional damping functionality.
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 enhances compatibility and reduces the size of the valve block, allowing for easier interchangeability and cost-effective manufacturing by maintaining consistent flow paths with or without damping devices.
Implementation Method 1
a first pressure pulsation reducing device and a second pressure pulsation reducing device which are disposed above the first valve row and reduce pressure pulsation generated when hydraulic pressure of brake oil discharged from the pump is formed at high pressure
Data Source
AI summary
The present disclosure relates to a valve block for a hydraulic brake system. The valve block for a hydraulic brake system includes a first valve row in which NO valve receiving bores to receive a plurality of NO valves are disposed, a second valve row in which NC valve receiving bores to receive a plurality of NC valves are disposed, a pair of pump receiving bores formed symmetrically to each other on opposite side surfaces to be disposed between the first and second valve rows and receiving a piston pump, a pair of first damping bores formed symmetrically to each other on the opposite side surfaces to be disposed above the first valve row and receiving a first pressure pulsation reducing device, a pair of second damping bores formed symmetrically to each other on an upper surface to be disposed above the first damping bores and receiving a second pressure pulsation reducing device, a pair of low pressure accumulator receiving bores formed symmetrically to each other on a lower surface, and a pressure sensor receiving bore formed on a front surface to be disposed adjacent to the pair of low pressure accumulator receiving bores.