US 11,801,814 B2 · Brake compliance calibration with electrohydraulic brakes

Abstract

An EH braking system including a brake valve operably connected to a brake and a brake pressure sensor. A calibration event for the EH braking system where the compliance calibration time is measured from when the brake valve is operated at full activation to when the brake pressure sensor senses the pressure starts to build in the brake circuit. The compliance calibration time is the time it takes to fill the compliance volume of the brake(s). The compliance calibrated fill time is used during a normal braking event wherein the brake valve will be operated to a full activation condition for duration of the compliance calibration time. After the calibrated fill time has elapsed, the brake valve will be operated at the desired operator command of the brake pedal. This results in quicker fill times of the brake and better brake system response.

Claims20

Dependent claims

A method for managing a braking operation, comprising:

initiating a calibration event for an electro-hydraulic braking system including a brake valve operably connected to a brake and a brake pressure sensor, and a controller operably connected to the electro-hydraulic braking system;
operating the brake valve to a full activation condition;
measure a compliance calibration time for the brake valve in response to operation of the brake valve at the full activation condition;
determining a pressure event associated with the brake pressure sensor;
and
terminating the measurement of the compliance calibration time in response to occurrence of the pressure event.

3 more elements

An apparatus for managing a braking operation, comprising:

an electro-hydraulic braking system including a brake valve operably connected to a brake and a brake pressure sensor;
a controller operably connected to the electro-hydraulic braking system, wherein the controller is configured to:
initiate a calibration event associated with the electro-hydraulic braking system;
measure a compliance calibration time for the brake valve in response to operation of the brake valve at a full activation condition;
determine a pressure event associated with the brake pressure sensor;
and
terminate the measurement of the compliance calibration time in response to the pressure event.

4 more elements

Dependencies are inferred from the claim text.

Brake compliance calibration with electrohydraulic brakes

Life of this patent

Brake compliance calibration with electrohydraulic brakes

Life of this patent

Abstract

Claims20