Brake Distribution Control for Combined Maneuvers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Combined brake and propulsion maneuvers, such as brake-stands or burn-outs, can lead to excessive heat and torque, potentially causing vehicle damage, and existing systems lack effective control to manage brake pressure distribution and prevent driveline damage while maintaining driver control.
Innovation Solution
A system that monitors driver inputs and automatically controls brake pressure distribution by applying a front braking force while reducing or eliminating rear braking force, allowing direct driver control over drive torque and brake torque, and automatically adjusting to prevent unsafe conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If combined brake and propulsion maneuvers are executed to warm up driven tires, then tire temperature increases, but excessive heat and torque can cause transmission or driveline damage
Solution Approach 1:
The system applies different braking forces to different axles by reducing rear brake torque while maintaining front brake torque during combined brake and propulsion maneuvers. This localized differentiation allows the maneuver to proceed while protecting the driveline from excessive torque loads that would cause damage.
2Reliability
If rear brake torque is reduced during combined brake and propulsion maneuvers, then driveline protection is improved, but vehicle control may be compromised
Solution Approach 1:
The system maintains front brake torque while reducing rear brake torque during combined brake and propulsion maneuvers. This localized differentiation preserves vehicle control through the front brakes while protecting the driveline by reducing torque loads on the rear driven wheels.
Solution Approach 2:
The control system continuously monitors vehicle conditions and driver inputs, automatically adjusting brake torque distribution in real-time. This feedback mechanism ensures vehicle control is maintained while protecting the driveline during combined brake and propulsion maneuvers.
3Reliability
If automatic brake pressure distribution control is implemented, then driveline damage is prevented, but system complexity increases
Solution Approach 1:
The control system uses feedback from vehicle sensors and driver inputs to automatically adjust brake pressure distribution. This feedback-based approach prevents driveline damage while maintaining a relatively simple system architecture that leverages existing vehicle control infrastructure.
Data Source
AI summary
A system for monitoring and controlling vehicle operation includes a monitoring unit disposed at a vehicle, the vehicle including rear brakes and front brakes, the monitoring unit configured to monitor driver inputs, and automatically detect a driver's intention to perform a combined brake and propulsion maneuver based on the driver inputs meeting a first set of conditions. The system also includes a control unit configured to receive a brake request and an engine torque request from the driver during the maneuver, and based on detecting the first set of conditions, apply a front braking force via the front brakes according to the brake request, and automatically control a rear braking force applied by the rear brakes during the maneuver, so that the rear braking force is less than the front braking force.