Eco-Drive Assist Display Positioning for Hybrid Vehicle Feedback
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Solution Overview
Problem
Hybrid vehicles experience discomfort due to engine operation at high speeds, as existing eco-drive assist systems fail to provide a reliable and comfortable indication of eco-drive state, leading to mismatch between driver operation and fuel efficiency feedback.
Innovation Solution
An eco-drive assist apparatus that calculates and displays the quantity of eco-drive as a relative quantity to engine startup and eco-drive judgment threshold values, adjusting the display to reflect whether the engine has been started and the level of vehicle power needed, ensuring accurate and comfortable feedback to the driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the engine is always working when the vehicle is traveling at high speed, then the vehicle can maintain sufficient power output, but the driver experiences discomfort due to mismatch between driver operation and displayed eco-drive information
Solution Approach 1:
The display position of eco-drive information is made dynamic rather than static. The system automatically adjusts the display position based on real-time engine operation state and driver's operation needs. When the engine is working but driver's operation needs no vehicle power, the display position shifts to indicate better eco-drive performance, creating a dynamic adaptation that resolves the contradiction between power output and driver comfort
Solution Approach 2:
The system changes the display parameter (position) of eco-drive information based on engine operation state. By modifying which parameter is displayed and where it is displayed, the system provides accurate feedback that matches driver expectations while maintaining the necessary power output from the engine
2Loss of information
If information indicating the engine is working is displayed, then the driver receives feedback about engine operation, but this causes driver discomfort when the driver releases the accelerator pedal
Solution Approach 1:
The display position adapts dynamically to the engine operation state. When the engine is working but the driver's operation does not require vehicle power, the system displays the eco-drive information at a position indicating better performance rather than showing the engine as continuously working. This dynamic adjustment provides accurate information while preventing driver discomfort
Solution Approach 2:
The system provides accurate feedback about eco-drive state by adjusting the display position based on real-time conditions. The feedback mechanism considers both engine operation state and driver's operation needs, displaying information that accurately reflects the actual eco-drive performance rather than simply indicating engine on/off state, thereby maintaining driver comfort
Data Source
AI summary
An eco-drive assist apparatus displays a quantity of eco-drive that indicates a degree of ecology and/or economy in driving in a hybrid vehicle equipped with an engine and a motor. The apparatus includes a first part configured to calculate the quantity of eco-drive on the basis of a vehicle power generated in the vehicle, and a second part configured to cause the quantity of eco-drive to be displayed in a graphic manner as a relative quantity to an eco-drive judgment threshold value that indicates whether the vehicle is in an eco-drive state and as a relative quantity to an engine startup threshold value that indicates whether the engine has been started up and configured to cause the quantity of eco-drive to be displayed on a boundary of the engine startup threshold value or displayed at a position where the quantity of eco-drive is worse than the engine startup threshold value when the engine has been started up. The second part causes the quantity of eco-drive to be displayed at a position where the quantity of eco-drive is better than the engine startup threshold value when the engine has been started up and a driver's operation needs no vehicle power.