METHOD AND CONTROL DEVICE FOR DETERMINING A BRAKE CYLINDER PRESSURE IN A PNEUMATIC BRAKE SYSTEM OF A COMMERCIAL VEHICLE
Dossier Overview
Applicant
ZF CV Systems Global GmbH
Inventor
Joachim Pracht; Ulrich Brockmeyer
IPC Classification
CPC Classification
A method is for determining a brake cylinder pressure in a pneumatic brake system of a commercial vehicle, in which the brake cylinder pressure is estimated via a mathematical model. In a method with which the brake chamber pressure can be determined reliably without using a pressure sensor, the brake cylinder pressure is determined continuously as a function of an air mass flow, which is adjusted by an open or closed state of an electronically controllable solenoid valve arranged outside a control device for the brake cylinder pressure in an air supply line immediately upstream of a brake cylinder, and the physical properties of the air in the chamber of the brake cylinder while taking into account the currently predefined open or closed state of the solenoid valve.
Original (Chinese)
A method is for determining a brake cylinder pressure in a pneumatic brake system of a commercial vehicle, in which the brake cylinder pressure is estimated via a mathematical model. In a method with which the brake chamber pressure can be determined reliably without using a pressure sensor, the brake cylinder pressure is determined continuously as a function of an air mass flow, which is adjusted by an open or closed state of an electronically controllable solenoid valve arranged outside a control device for the brake cylinder pressure in an air supply line immediately upstream of a brake cylinder, and the physical properties of the air in the chamber of the brake cylinder while taking into account the currently predefined open or closed state of the solenoid valve.
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