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:
May. 17, 2022
Filed:
Oct. 29, 2018
Robert Bosch Gmbh, Stuttgart, DE;
Timothy J. Albert, Niles, MI (US);
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A brake system () for a vehicle includes a brake unit (A;B) having: a fluid reservoir () for containing a volume of brake fluid therein, an ECU (), and an electronically-controlled plunger device () operable to stroke in response to a control signal from the ECU () to supply fluid pressure to at least one wheel cylinder (RL, RR) for vehicle braking. The plunger device () includes: a rod () coupled to an actuator (M), a primary seal () coupled to the rod () and arranged to seal against an inner wall of a plunger chamber, and a secondary seal () surrounding the rod () to seal an interface where the rod () exits the plunger chamber. A portion of the plunger chamber between the primary and secondary seals () is coupled through a switchable valve () to the fluid reservoir (). A method of operating a brake system () for self-contained brake circuit filling comprises the steps of providing a brake unit (A;B), performing a pressure bleed on a first portion of a brake circuit, supplying pressurized brake fluid to a wheel (RL) coupled to the first portion and supplying brake fluid from a reservoir () to a second portion of the brake circuit by switching a valve () while using a plunger device () under control of an ECU ().