Driver Assistance Slipstream Control for EV Range Extension
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Solution Overview
Problem
Existing driver assistance systems fail to address the significant influence of aerodynamics on energy consumption, particularly at higher speeds, which contributes to range anxiety in electric vehicles due to insufficient battery charge.
Innovation Solution
A driver assistance system that utilizes sensors to detect surrounding vehicles and environments, calculates slipstream efficiency, and provides visual and autonomous guidance to optimize aerodynamic performance by positioning the vehicle in the most efficient slipstream regions, adjusting vehicle settings, and offering compensation systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the vehicle drives at higher speeds to meet user requirements for driving range, then the driving range is extended, but the energy consumption increases significantly due to aerodynamic resistance
Solution Approach 1:
The system converts the harmful aerodynamic resistance into a beneficial effect by detecting slipstream regions created by surrounding vehicles and actively steering the ego vehicle into these regions. The air resistance that normally increases energy consumption at higher speeds is transformed into a drag-reducing opportunity, allowing extended driving range without proportionally increased energy consumption.
Solution Approach 2:
The driver assistance system continuously monitors the vehicle surroundings using sensors, calculates slipstream efficiency in real-time, and provides feedback to the driver through visual displays showing energy savings and aerodynamic efficiency. This feedback loop enables the driver to adjust driving behavior to optimize energy consumption while maintaining driving range.
2Use of energy by moving object
If the vehicle utilizes slipstream regions of surrounding vehicles to reduce energy consumption, then the energy efficiency is improved, but the driving safety and comfort may be compromised due to close proximity to other vehicles
Solution Approach 1:
The system dynamically adjusts the steering angle and positioning of the ego vehicle within the slipstream region based on real-time conditions. The driver assistance system continuously optimizes the vehicle's position to maximize aerodynamic efficiency while maintaining safe distances from surrounding vehicles, adapting to changing traffic conditions and ensuring both energy efficiency and driving safety.
3Use of energy by moving object
If the driver assistance system provides comprehensive aerodynamic information and control features, then the energy optimization capability is enhanced, but the system complexity increases
Solution Approach 1:
The driver assistance system integrates multiple functions into a single comprehensive solution: sensor-based detection of surrounding vehicles, calculation of slipstream efficiency, visual display of aerodynamic information, and autonomous or assisted steering control. This multi-functional approach consolidates what would otherwise require separate systems, enhancing energy optimization capability while managing system complexity through integration.
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
Significantly reduces energy consumption and extends the driving range by optimizing aerodynamic efficiency through intelligent slipstream driving and vehicle adjustments, enhancing user acceptance and safety.
Implementation Method 1
A slipstream region 5 of a relevant further motor vehicle 3 driving in a predetermined surrounding region 4 of the motor vehicle 2 is detected. Based on whether the motor vehicle 2 is driving in the slipstream region 5 or in one of the slipstream regions 5, a current slipstream efficiency 9 is ascertained.
Data Source
AI summary
The disclosure relates to a motor vehicle, to a driver assistance system, and to a method for operating the driver assistance system. A relevant slipstream region of a further motor vehicle driving in a predetermined surrounding region of the motor vehicle is detected. A current slipstream efficiency is ascertained based on whether the motor vehicle is driving in the slipstream region and, if so, based on which of the slipstream partial regions of the slipstream region the motor vehicle is driving in. An overall aerodynamic efficiency is ascertained based on a current driving speed of the motor vehicle and the current slipstream efficiency. An individual overall aerodynamic efficiency potential that characterizes an overall aerodynamic efficiency that will be achieved by the motor vehicle when same drives in the slipstream region of the further motor vehicle is assigned to the further motor vehicle based on the driving speed and slipstream region.