Patent · US Active

Vehicle brake system with adaptive pressure calibration

US11667272B2 · kind B2 · utility

1Cited by

5References

8Claims

0Family size

Assignee

ZF ACTIVE SAFETY US INC. · US

Inventors

Wendy Zhang · Farmington Hills, US
Christian Chemnitz · Neuwied, DE
Christoph Probst · Bendorf, DE

Key dates

Filing date	Jan 24, 2020
Grant date	Jun 6, 2023
Priority date	—
Expiry date	Jul 4, 2041

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K37/005
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A method of calibrating a solenoid actuated valve includes: providing a brake system including a fluid pressure source: providing a valve having a solenoid, and wherein the valve is in fluid communication with the fluid pressure source; operating the fluid pressure source to provide a constant flow of fluid to the valve; energizing the solenoid of the valve with a constant current such that fluid flows through the valve; measuring the pressure of the fluid flowing at the valve; adjusting the current sent to the solenoid until a predetermined pressure has been obtained; storing a nominal current value of the current required to obtain the predetermined pressure; and calibrating the valve by adding a correction offset factor to the nominal current value for future actuation of the solenoid of the valve.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.