Method and system for control of auxiliary brakes

摘要

A method and a system to control an auxiliary brake system in a vehicle 100 having a service brake system 150 and an auxiliary brake system 160. Also a system for prevention of wheel lock when braking, which may deactivate a braking action provided by the auxiliary brake system 160 and may actively control a braking action provided by the service brake system 150. The system determines whether the vehicle 100 is in a driving mode for which it is acceptable in terms of safety and/or drivability to block the deactivation of the braking action for the auxiliary brake system 160. If a first manual control 170, which is set up solely for activating braking action for the auxiliary brake system 160, is activated, this means it is acceptable, from a safety and/or drivability point of view, for the driving mode in question, to block the deactivation. Also arranging block deactivation for the auxiliary brake system 160 if it is acceptable in terms of safety and drivability to block it.

主权项

1. A method for control of an auxiliary brake system in a vehicle, wherein the vehicle includes an auxiliary brake system configured for braking the vehicle not by direct braking of wheels of the vehicle, a service brake system configured for directly braking of wheels of the vehicle and a system for prevention of wheel lock when braking the vehicle, wherein the system for the prevention of wheel lock is configured to deactivate a braking action provided by the auxiliary brake system,
the method comprising: determining whether the vehicle is in a driving mode in which it is acceptable in terms of at least one of safety and drivability of the vehicle to block deactivation of the braking action of the auxiliary brake system through the system for prevention of wheel lock when braking, wherein the determining is based on at least a first input made by a driver of the vehicle through a first manual control, set up solely for activation of the braking action of the auxiliary brake system, and wherein an activation of the first manual control is interpreted as though it is acceptable in terms of at least one of safety and drivability for the driving mode to block the deactivation of the braking action of the auxiliary brake system; and if the determination shows that it is acceptable in terms of at least one of safety and drivability, blocking of the deactivation of the braking action of the auxiliary brake system.