Brake Pump Housing Inlet Layout for Low-Loss Outlet Valve Flow
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Solution Overview
Problem
Conventional hydraulic assemblies in vehicle braking systems face inefficiencies due to complex redirection components in outlet valves, leading to friction, pressure, and energy losses when discharging brake fluid, which complicates controlled brake pressure management and recovery efficiency.
Innovation Solution
The pump housing design features an outlet valve receiving member with an inlet that directs brake fluid axially counter to the closure force without additional redirection components, allowing for direct axial flow and energy-efficient operation of the outlet valve, enabling selective and controlled discharge of brake pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If brake fluid is guided to flow transversely to the closure force through a conventional inlet and valve inlet, then the outlet valve can be received in the outlet valve receiving member, but friction, pressure, and energy losses occur due to the need for redirection components inside the outlet valve
Solution Approach 1:
The patent extracts the redirection function from inside the outlet valve by providing a specially designed inlet in the outlet valve receiving member. This inlet directly guides brake fluid to flow axially counter to the closure force, eliminating the need for complex redirection components within the outlet valve itself and reducing energy losses from friction and pressure drops
Solution Approach 2:
The inlet in the outlet valve receiving member acts as an intermediary element that redirects brake fluid flow before it enters the outlet valve. By positioning this inlet to guide fluid axially counter to the closure force, the system avoids the need for internal redirection mechanisms within the outlet valve, thereby reducing complexity and energy losses
2Ease of manufacture
If redirection components are provided inside the outlet valve to redirect brake fluid flowing transversely, then the outlet valve can receive brake fluid from a conventional inlet, but the structural complexity and manufacturing cost increase
Solution Approach 1:
The patent removes the redirection functionality from the outlet valve structure and relocates it to the inlet in the outlet valve receiving member. This extraction simplifies the outlet valve design, reduces manufacturing complexity, and lowers production costs while maintaining proper fluid flow guidance
Solution Approach 2:
The patent merges the fluid guidance function into the outlet valve receiving member structure itself. By integrating the inlet design that directs brake fluid axially counter to the closure force, the system combines multiple functions into a single component, reducing overall part count and manufacturing complexity
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 energy efficiency and controllability of brake fluid flow, optimizing brake pressure management and recovery efficiency in vehicle braking systems, particularly in hybrid electric vehicles, while simplifying the structural and cost aspects of the hydraulic assembly.
Implementation Method 1
the inlet is adapted to guide the brake fluid during introduction into the outlet valve in a flow direction which is directed counter to the closure force when the outlet valve is received in the outlet valve receiving member
Data Source
AI summary
A pump housing of a hydraulic assembly of a vehicle brake system has at least one wheel brake cylinder connection for connecting a wheel brake cylinder to the pump housing, and an outlet valve receiving member associated with the individual wheel brake cylinder connection to receive an outlet valve, which is provided for letting brake fluid out of the wheel brake cylinder into the pump housing. The outlet valve has a valve inlet that can be closed by a closing element with an associated closing force. The outlet valve receiving member has an inlet for letting brake fluid from the wheel brake cylinder into the outlet valve. The inlet is adapted for guiding the brake fluid in a flow direction opposite the closing force when letting the brake fluid into the outlet valve, when the outlet valve is received in the outlet valve receiving member.