Fuel Cell Vehicle Idling-Stop Control via Driving Pattern
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Solution Overview
Problem
Existing fuel cell vehicle control methods do not dynamically adjust idling-stop mode activation and deactivation based on driving patterns, leading to inefficient fuel usage and responsiveness.
Innovation Solution
A method and system that determine a driver's driving pattern through acceleration and deceleration information, setting specific conditions for idling-stop activation and deactivation based on predefined reference values, allowing the fuel cell to stop or start generating power accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed criteria are used for activation and deactivation of idling-stop mode, then control simplicity is maintained, but fuel efficiency and system responsiveness are reduced
Solution Approach 1:
The patent applies dynamics by transitioning from fixed, static criteria for idling-stop mode to dynamic criteria that adapt in real-time based on driving patterns. The controller continuously monitors driving behavior and adjusts activation/deactivation conditions accordingly, making the control system flexible and responsive to changing operational contexts, thereby improving fuel efficiency without excessive complexity
Solution Approach 2:
The patent changes the parameters used for control decisions from fixed thresholds to variable parameters that evolve based on driving patterns. By monitoring acceleration, deceleration, and other driving characteristics over time, the system adjusts the parameters for idling-stop activation and deactivation to match actual driving conditions, optimizing energy efficiency
2Device complexity
If fixed criteria are used for activation and deactivation of idling-stop mode, then system simplicity is maintained, but vehicle responsiveness is reduced
Solution Approach 1:
The system becomes dynamic by continuously adapting idling-stop control parameters based on real-time driving pattern recognition. This allows the system to respond quickly to driver intentions and changing driving conditions, improving vehicle responsiveness while maintaining reasonable system complexity through structured control logic
Solution Approach 2:
The patent implements feedback mechanisms where the controller monitors driving patterns and uses this information to adjust idling-stop mode timing. This closed-loop approach ensures the system responds appropriately to actual driving conditions, improving responsiveness by learning from and adapting to driver behavior patterns
3Loss of energy
If idling-stop mode is activated frequently, then fuel efficiency is improved, but power generation availability is reduced
Solution Approach 1:
The system dynamically balances fuel efficiency gains against power generation needs by adjusting idling-stop activation frequency based on driving patterns. During periods where fuel savings are most beneficial, the system activates idling-stop more frequently, while maintaining the capability to quickly restore power generation when needed, optimizing the trade-off between these two objectives
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances fuel efficiency by optimizing the idling-stop mode ratio and improving vehicle responsiveness based on the driving pattern, whether aggressive or gentle, thereby enhancing overall vehicle operation.
Implementation Method 1
a fuel cell stack configured to generate electric energy through an electrochemical reaction of a reaction gas
Data Source
AI summary
A method and system for controlling a fuel cell vehicle are provided. The method includes determining, by a controller, a driving pattern of a driver based on driving information including acceleration and deceleration information. A condition for activation of an idling-stop of a fuel cell is then set based on the determined driving pattern and the fuel cell is stopped from generating electric energy when the condition for activation of the idling-stop is satisfied.