Hybrid Vehicle Mode Switching for Mountain Terrain
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Solution Overview
Problem
Hybrid vehicles face challenges in maintaining optimal performance on steep inclines, such as mountain roads, where the electric motor's battery charge is depleted, leading to a noticeable reduction in power when relying solely on the internal combustion engine.
Innovation Solution
A method for identifying and recommending optimal hybrid vehicle operating modes based on geographic data, establishing zones for specific environments like mountains, and using a control unit to determine when to switch to a performance-oriented 'mountain mode' to manage battery charge and ensure adequate propulsion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the electric motor is used for majority of propulsion needs, then fuel economy is improved, but power is reduced when battery charge is depleted on steep inclines
Solution Approach 1:
The system performs preliminary action by detecting mountainous terrain conditions in advance using geographic data and establishing mountain zones before the vehicle enters them. When a mountain zone is detected, the system proactively switches to mountain mode, which prioritizes battery charge maintenance and engine supplementation, ensuring adequate power is available before the vehicle actually needs it for climbing steep inclines.
2Power
If the internal combustion engine is used to supplement propulsion on steep inclines, then power is maintained, but fuel economy deteriorates
Solution Approach 1:
The system applies dynamics by implementing multiple operating modes (standard mode and mountain mode) that dynamically adjust the balance between electric motor and internal combustion engine usage. The control unit switches between modes based on real-time detection of geographic conditions, allowing the powertrain to adapt its energy consumption characteristics to match the driving environment, thereby maintaining power when needed while optimizing fuel economy in normal conditions.
3Adaptability or versatility
If geographic data retrieval and zone establishment systems are added, then adaptability to different environments is improved, but device complexity increases
Solution Approach 1:
The system achieves universality by integrating multiple functions into existing vehicle components. The geographic data retrieval system uses the vehicle's existing GPS/location capabilities for dual purposes: navigation and mountain zone detection. The control unit that manages powertrain operation is enhanced to also handle mountain mode detection and switching, combining environmental adaptability functions with existing vehicle control systems rather than adding entirely separate systems.
Data Source
AI summary
A method and system used to identify an optimal hybrid vehicle operating mode based on a variety of potential factors, and then recommend the optimal operating mode to the driver so that they can make an informed decision regarding their operating mode selection. In one embodiment, the method uses geographic-, vehicle- and/or environmental-related factors to establish one or more operating zones, monitors the location of the hybrid vehicle and determines when it is within one of the operating zones, and then determines an operating mode that is optimal for that particular operating zone.