Vehicle control system

The vehicle control device addresses backlash shocks and vibrations by dynamically adjusting torque control to adapt to manufacturing variations, effectively suppressing these issues while maintaining responsiveness.

JP2026091175APending Publication Date: 2026-06-03TOYOTA JIDOSHA KK
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
TOYOTA JIDOSHA KK
Filing Date
2024-11-22
Publication Date
2026-06-03

AI Technical Summary

Technical Problem

Existing vehicle control systems face issues with backlash shocks and vehicle vibrations due to manufacturing variations, which can lead to unpleasant sensory impressions and response delays, and existing solutions to mitigate these issues risk deteriorating vehicle responsiveness.

Method used

A vehicle control device with a torque limiting control unit that adjusts output torque based on predetermined gradients and stagnation times to manage backlash shocks and vehicle vibrations, adapting to variations in mass-produced vehicles and changing vehicle characteristics.

Benefits of technology

The system effectively suppresses backlash shocks and vehicle vibrations while maintaining responsiveness by dynamically adjusting torque control parameters based on shock and vibration levels, ensuring consistent performance across different vehicles.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention provides a vehicle control device that can suppress rattling shocks and vehicle vibrations while minimizing the deterioration of response even when there are variations in mass-produced vehicles. [Solution] When switching between a driven state and a driven state, torque limiting control is performed, which causes the output torque of the power source to remain at a predetermined torque, and then changes the output torque of the power source at a predetermined gradient. When torque limiting control is performed, if the magnitude of the rattle-reducing shock is greater than or equal to the first determination value, the next time the stagnation time at the predetermined torque is made longer than it is now, while if the magnitude of the rattle-reducing shock is less than the second determination value, the next time the stagnation time is made shorter than it is now. Also, when torque limiting control is performed, if the magnitude of the vehicle vibration is greater than or equal to the third determination value, the next predetermined gradient is made smaller than it is now, while if the magnitude of the vehicle vibration is less than the fourth determination value, the next predetermined gradient is made larger than it is now.
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