Vehicle Power Display Control for Temporary Power Limits
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Solution Overview
Problem
Existing vehicle display systems for electrified vehicles fail to accurately indicate instantaneous power delivery as a proportion of powertrain capability, leading to misleading information during temporary or fault conditions that reduce powertrain availability.
Innovation Solution
A controller for a vehicle display system that receives data on limitations such as reduced traction power or torque, determines if these conditions meet predetermined criteria, and outputs a signal to display the limitation as a proportion of powertrain capability, ensuring accurate and relevant information is provided to the driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the powertrain power indicator continuously displays power delivery as a proportion of power capability during all conditions, then the driver receives constant feedback on powertrain usage, but the display becomes misleading when temporary or fault conditions reduce power availability
Solution Approach 1:
The display system dynamically adjusts its behavior based on operating conditions. The processor monitors conditions and selectively modifies the display output - showing limitation indicators only when temporary or fault conditions are detected, and maintaining normal power delivery indication during regular operation. This dynamic adaptation resolves the contradiction by making the display accurate during fault conditions while avoiding unnecessary distraction during normal operation.
Solution Approach 2:
The system changes the display parameters based on detected conditions. When a limitation condition is detected (such as reduced power availability due to faults or temporary conditions), the processor modifies the display to show a limitation indicator alongside the power delivery indication. This parameter change ensures the information remains accurate during abnormal conditions without constantly distracting the driver during normal operation.
2Loss of information
If the system displays all detected limitations on power delivery, then complete information is provided to the driver, but unnecessary information may distract the driver during normal operation
Solution Approach 1:
The display system dynamically adjusts its behavior based on operating conditions. The processor monitors conditions and selectively modifies the display output - showing limitation indicators only when temporary or fault conditions are detected, and maintaining normal power delivery indication during regular operation. This dynamic adaptation resolves the contradiction by making the display accurate during fault conditions while avoiding unnecessary distraction during normal operation.
Solution Approach 2:
The system applies different display qualities to different operating conditions. During normal operation, only essential power delivery information is shown. When limitation conditions are detected, additional limitation indicators are locally added to the display. This selective application of information quality ensures completeness when needed while minimizing distraction during normal operation.
Data Source
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AI summary
A vehicle display system is configured to display instantaneous power delivery of a powertrain of the vehicle as a proportion of the instantaneous power capability of the powertrain. A controller for the vehicle display system comprises an input configured to receive data relating to a condition indicative of a limitation on the instantaneous power delivery and/or power capability, a processor configured to determine from the data whether the condition meets at least one predetermined criterion and an output configured to output a signal to display the limitation in relation to the instantaneous power capability of the powertrain when the condition meets the at least one predetermined criterion.