The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2025
Filed:
Aug. 11, 2022
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Naoki Yabusaki, Toyota, JP;
Teppei Onodera, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A brake device for a vehicle includes a fluid supply portion that supplies a fluid to a wheel cylinder utilizing the fluid in a reservoir and is configured such that a piston presses brake pads against a disc rotor to apply a braking force to a wheel. The brake device includes: a fluid level sensor configured to measure a value of a fluid level in the reservoir and a controller including one or more processors and configured to: estimate a wear amount of the brake pads based on a result of measurement by the fluid level sensor; estimate a heat generation amount of the brake pads based on the result of measurement; and determine whether a fluid leakage is occurring based on i) an amount of change in the fluid level that is based on the result of the measurement, ii) the wear amount, and iii) the heat generation amount.