Controll arrangement and method for controlling a vehicle

An adjusted gear selection strategy for vehicle transmission systems aligns brake torque with slip control needs, addressing wheel locking issues and improving safety and performance during braking.

WO2026122013A1 Publication Date: 2026-06-11SCANIA CV AB
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
SCANIA CV AB
Filing Date
2025-12-04
Publication Date
2026-06-11

AI Technical Summary

⚠Technical Problem

Existing vehicle control systems struggle to effectively manage wheel slip during braking, leading to potential wheel locking and reduced safety and performance, particularly in heavy vehicles.

⚗Method used

Implementing an adjusted gear selection strategy for the transmission arrangement in conjunction with auxiliary brake systems to ensure the available brake torque operational range aligns with the desired brake torque operational range for slip control, preventing wheel locking and improving braking control.

🎯Benefits of technology

Enhances safety and performance by allowing precise control of braking torque, reducing the risk of wheel locking, and achieving shorter stopping distances.

✦ Generated by Eureka AI based on patent content.

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Abstract

Control arrangement (100) and method for controlling a vehicle (1), said vehicle (1) comprising a powertrain (2) configured to transmit torque to one or more drive wheels (7) of the vehicle (1). The powertrain (2) comprises a transmission arrangement (4), and an auxiliary brake system (11, 12, 13) arranged upstream of the transmission arrangement (4). The method comprises, when slip control of the vehicle (1) is initiated and / or actively performed, determining (S102) a desired brake torque operational range for slip control of the vehicle (1). The method further comprises, when the vehicle (1) is braked using the auxiliary brake system (11, 12, 13), activating (S104) an adjusted gear selection strategy so that the transmission arrangement (4) is controlled in accordance therewith. Said adjusted gear selection strategy comprises selecting a gear that, for a predefined operational output torque window for the auxiliary brake system (11, 12, 13), results in an available brake torque operational range at the one or more drive wheels (7) that falls within, and / or provides a broadest overlap with, the determined desired brake torque operational range for slip control.
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