A system and method for managing gear shifts in vehicle

The system automates gear shifts by adjusting motor torque and RPM to manage dog clutches, addressing the limitations of existing transmissions with improved efficiency and reduced maintenance.

WO2026115327A1PCT designated stage Publication Date: 2026-06-04ATHER ENERGY LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
ATHER ENERGY LTD
Filing Date
2025-09-19
Publication Date
2026-06-04

AI Technical Summary

Technical Problem

Existing vehicle transmission systems, such as manual, dual-clutch, and continuously variable transmissions, face issues with driver skill requirements, complexity, maintenance costs, reliability, and durability, particularly in stop-and-go traffic, leading to wear and tear and high repair costs.

Method used

A system and method that automatically manage gear shifts by momentarily adjusting motor torque to disengage and engage dog clutches, estimate RPM, and adjust rotational speed to facilitate seamless gear changes using a controller and motor control strategies.

Benefits of technology

Enables fast, precise, and smooth gear shifts, reducing system complexity, maintenance, and repair costs while improving performance and durability by eliminating the need for clutches and synchromesh assemblies.

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Abstract

The present disclosure provides a system (200) and a method (300) for managing gear shifts in a vehicle (10). The method (300) receives a gear shift request from a user, and momentarily adjusts a temporary torque of a motor to facilitate disengagement of a dog clutch from a gear. The method (300) determines a subsequent gear shift when the dog clutch is successfully disengaged, estimates a Revolutions Per Minute (RPM) for the subsequent gear shift, and adjusts a rotational speed of the motor to match the RPM of the subsequent gear shift to facilitate successful engagement of the dog clutch to a pre-defined gear. If the dog clutch is engaged to the pre-defined gear, the method (300) ramps up or ramps down the temporary torque of the motor to a user requested torque for enabling fast and precise gearshifts, and providing smoother driving experience to the user.
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