Brake system with pressure supply device and safety gate for brake circuit

JP2026090508APending Publication Date: 2026-06-02IPGATE
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
IPGATE
Filing Date
2026-02-25
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing braking systems face challenges in ensuring fail-safe operation with high safety and reduced cost, particularly in scenarios of single and dual failures, which can compromise braking effectiveness and safety, especially in vehicles with advanced automation levels.

Method used

A brake system design with a reduced number of valves, incorporating a safety gate for selective isolation or connection of brake circuits, a master brake cylinder actuated by a brake pedal, and diagnostic capabilities for fault detection, allowing for redundant pressure supply and controlled pressure reduction, ensuring sufficient braking even in failure scenarios.

Benefits of technology

The system achieves high fail-safety with reduced structural volume and cost, maintaining sufficient braking pressure and diagnostic capabilities to identify and mitigate faults, supporting various automation levels with enhanced reliability and maneuverability.

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Abstract

To provide a braking system that reduces cost and structural volume, and improves safety and / or the probability of failure caused by malfunction. [Solution] The master cylinder, which is actuated by an actuator in the form of a brake pedal (1), is provided with only one actuation chamber (110), which can be hydraulically connected to the brake circuit lines (HL4, HL5) of the brake circuit (BK1, BK2) directly via a hydraulic line (HL3) or via circuit isolation valves (BP1, BP2), and a switching valve is used to selectively close or open the hydraulic line (HL3), which is particularly open when de-energized.
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