Brake system and control method

JP2026101633APending Publication Date: 2026-06-22ARVINMERITOR TECHNOLOGY LLC
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
ARVINMERITOR TECHNOLOGY LLC
Filing Date
2025-12-08
Publication Date
2026-06-22

AI Technical Summary

Technical Problem

Existing brake systems face challenges in accurately determining and maintaining optimal running clearance between brake pad assemblies and friction members, which affects braking performance and component wear, and require additional sensors for direct measurement, increasing complexity and cost.

Method used

A method and system using a fluid power system with a pressure sensor to indirectly evaluate running clearance by measuring pressure drops during brake actuation, allowing individual brake actuation and leak detection without additional sensors, and controlling fluid pressure within thresholds to maintain optimal brake operation.

Benefits of technology

Indirectly evaluates running clearance effectively, reduces wear on brake components, and simplifies the system by eliminating the need for additional sensors, while maintaining braking performance and durability.

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Abstract

This invention relates to a friction brake system and control method for vehicles. [Solution] The brake pad assembly is actuated by fluid from a retracted position to an extended position. The method includes determining whether running clearance is acceptable based on a first fluid supply pressure associated with the brake pad assembly being in the retracted position and a second fluid supply pressure associated with the brake pad assembly being in the extended position.
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