Coasting Guidance Timing Based on Approach Lane
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Solution Overview
Problem
Drivers face challenges in gauging when to coast to improve fuel efficiency, particularly when approaching different types of stop events in multiple lanes, leading to inefficient braking and energy loss.
Innovation Solution
A coasting guidance system that uses an electronic control unit to determine the ideal coasting location based on the vehicle's lane and specific conditions, such as traffic and stop event types, providing notifications to the driver to begin coasting at the appropriate time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the driver begins to coast too early, then fuel efficiency is improved, but the vehicle may stop before reaching the stop sign
Solution Approach 1:
The system performs preliminary calculation of the ideal coasting start location based on vehicle mass, braking characteristics, and distance to stop sign, then provides advance notification to the driver before reaching that location, allowing the driver to begin coasting at the optimal point rather than guessing
Solution Approach 2:
The system incorporates feedback mechanisms by learning actual stopping positions and coasting effectiveness from previous trips, then adjusting future coasting recommendations to improve both fuel efficiency and stopping accuracy over time
2Reliability
If the driver begins to coast too late, then stopping accuracy is improved, but energy dissipation brakes must be applied resulting in energy loss
Solution Approach 1:
The system calculates the optimal coasting start location in advance based on vehicle characteristics and road conditions, notifying the driver before reaching that point to ensure coasting begins at the precise moment needed to maximize regenerative braking energy recovery
Solution Approach 2:
The system adjusts coasting parameters such as the ideal coasting start location and notification timing based on learned vehicle mass, braking characteristics, and environmental conditions to optimize the balance between coasting duration and stopping precision
3Adaptability or versatility
If the system provides coasting guidance for multiple lanes with different stop events, then adaptability is improved, but device complexity increases
Solution Approach 1:
The system uses a single learning mechanism and control algorithm that automatically adapts to different lane configurations and stop event types (stop signs, traffic lights, yield signs) without requiring separate specialized systems for each lane or event type
Solution Approach 2:
The system automatically learns vehicle-specific parameters such as mass and braking characteristics through normal operation, and autonomously adjusts coasting recommendations for different lanes based on observed stopping patterns, eliminating the need for manual configuration or complex pre-programming
Data Source
AI summary
Methods, systems, and apparatus for adjusting coasting guidance and control to the driver of a vehicle to improve fuel efficiency. The coasting guidance system includes a user interface for displaying coasting information. The coasting guidance system includes an electronic control unit (ECU) coupled to the user interface. The ECU is configured to obtain a current location of the vehicle and a location of a respective lane of a plurality of lanes. The ECU is configured to determine that the vehicle is travelling in the respective lane based on the current location of the vehicle and location of the respective lane. The ECU is configured to determine a stop area of the respective lane and determine an ideal coasting location based on the stop area. The ECU is configured to provide a notification to begin coasting at or within a threshold distance of the ideal coasting location.