Hybrid Vehicle Lock-Up Charge Control via Driver Deceleration Prediction
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Solution Overview
Problem
Existing hybrid vehicle lock-up charge control technologies struggle to accurately predict driver intentions, leading to inefficient engine operation and increased fuel consumption due to frequent engine switching on and off.
Innovation Solution
An apparatus and method that include a state identifying unit, a determination unit, and a driving controller to assess the vehicle's driving state and determine the driver's deceleration intention, preventing the hybrid vehicle from entering a lock-up charge driving mode when a deceleration intention is detected, thus maintaining the lock-up driving mode and minimizing engine switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If lock-up charge control is implemented to reduce non-driven loss fuel, then fuel efficiency is improved, but engine efficiency deteriorates due to low operation point
Solution Approach 1:
The patent changes the control parameters by introducing multiple prediction time points (first prediction time point and second prediction time point) and adjusting the lock-up charge control duration based on predicted driver intentions. This dynamic parameter adjustment allows the system to optimize between reducing non-driven loss fuel and maintaining engine efficiency by adapting the control strategy to actual driving conditions.
2Stability of the object's composition
If prediction control is used to maintain engine coupling, then frequent engine switching is reduced, but driver intention prediction accuracy is insufficient
Solution Approach 1:
The patent performs preliminary prediction of driver intention at a first prediction time point before the actual deceleration occurs. This preliminary action allows the system to prepare appropriate control strategies in advance, improving the accuracy of driver intention prediction by analyzing driving patterns before the actual event happens, rather than reacting after the fact.
Solution Approach 2:
The system implements feedback by continuously monitoring actual driver actions and comparing them with predicted intentions. When the predicted intention matches the actual driver action, the system reinforces this prediction pattern; when they differ, the system adjusts its prediction algorithm. This feedback mechanism progressively improves prediction accuracy while maintaining stable engine coupling.
3Loss of energy
If lock-up charge control maintains engine coupling for specific time, then fuel consumption is reduced, but engine operation point becomes suboptimal
Solution Approach 1:
The patent introduces dynamic adjustment of the lock-up charge control duration based on predicted driver intentions. Instead of maintaining a fixed time period, the system adaptively extends or shortens the control duration according to real-time driving conditions and predicted driver behavior. This dynamic approach allows the engine to operate at optimal points longer while still achieving fuel savings during appropriate deceleration events.
Data Source
AI summary
An apparatus and method for controlling driving of a hybrid vehicle are provided. The apparatus includes a state identifying unit that identifies a driving state of a vehicle based on driving information of the vehicle during lock-up driving of the vehicle and a determination unit that determines whether the identified driving state satisfies a preset lock-up charge driving mode entering condition and determines a deceleration volition of a driver based on the identified driving state. When the identified driving state satisfies the lock-up charge driving mode entering condition a driving controller interrupts the vehicle from entering into a lock-up charge driving mode when the driver has a deceleration intention.