Integrated Brake and Suspension Pressure Control Layout

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Solution Overview

Problem

The separate mounting of various control units, including a hydraulic pressure controller and suspension control units, occupies excessive mounting space in vehicles.

Innovation Solution

Integration of a hydraulic pressure control mechanism and suspension control mechanism into a single control unit, utilizing a control substrate with relays to independently supply power to either the brake control valve or suspension control valve, reducing the number of separate units and minimizing space requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate control units are mounted for hydraulic pressure control and suspension control, then each control function can be independently implemented, but the mounting space in the vehicle increases

Engineering Contradiction:
Improveindependent control functionVSAvoidmounting space
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

The patent combines the hydraulic pressure controller and suspension controller into a single integrated control unit. The controller includes a brake control circuit for controlling the brake control valve and a suspension control circuit for controlling the suspension control valve, both housed in the same controller housing with a shared power supply connection structure.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The integrated controller is designed to perform multiple functions: it can control the brake control valve through the brake control circuit, control the suspension control valve through the suspension control circuit, and provide independent power supply to either or both valves through the shared power supply connection structure with switching elements.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Device complexity

If a single power supply connection structure is used for both brake control valve and suspension control valve, then the device complexity is reduced, but the reliability of independent operation decreases

Engineering Contradiction:
Improvepower supply structureVSAvoidindependent operation
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The power supply connection structure is segmented into multiple independent power supply paths. Each path includes a switching element (relay or contactor) that can independently control power supply to the brake control valve or suspension control valve. This allows the controller to selectively supply power to one or the other valve based on operational requirements.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The power supply connection structure is made dynamic through the use of switching elements that can change the electrical connection state. The switching elements allow the controller to adaptively configure the power supply paths, enabling independent operation of either valve by closing the appropriate relay or contactor based on control signals from the control substrate.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12434680B2Hydraulic pressure controller
Publication Date: 2025.10.07 ROBERT BOSCH GMBH
  • US12434680B2 patent drawing
  • US12434680B2 patent drawing
  • US12434680B2 patent drawing

AI summary

A hydraulic pressure controller includes: a hydraulic pressure control mechanism including a brake control valve for controlling a hydraulic pressure of a brake fluid; and a control substrate including a brake control circuit that controls an operation of the brake control valve. The control substrate includes a suspension control circuit that controls an operation of a suspension control valve for controlling a damping force of a suspension of the vehicle, a first relay that enables energization between the brake control valve and a power supply, and that shuts off energization between the brake control valve and the power supply, and a second relay that enables energization between the suspension control valve and the power supply, and that shuts off energization between the suspension control valve and the power supply.