Analog Needle Light Control for Hybrid Tachometer Bounce
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Solution Overview
Problem
Vehicles with hybrid powertrains experience needle bounce in the tachometer needle due to transitions between electric and internal combustion engine modes, distracting drivers and causing concern about vehicle issues.
Innovation Solution
A system and method that adjust the intensity of light provided to an analog needle based on the engine's operating state, decreasing light when the engine is shutting down or starting to minimize distraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light intensity provided to the analog needle is increased to improve visibility, then the needle becomes more visible to the driver, but the needle bounce during engine state transitions becomes more distracting
Solution Approach 1:
The patent applies dynamics by making the light intensity adjustable and variable over time. The system dynamically changes the illumination intensity based on engine operating states, transitioning between different intensity levels during engine start-up, shutdown, and steady-state operations. This dynamic adjustment allows the needle to be highly visible when needed while reducing distraction during transient events.
Solution Approach 2:
The patent changes the parameter of light intensity based on engine operating conditions. By monitoring engine state (running, starting, shutting down) and adjusting the corresponding light intensity parameter, the system optimizes both visibility and driver comfort. The light intensity parameter is modified in response to changing operational requirements.
2Object-affected harmful factors
If the light intensity provided to the analog needle is decreased to reduce distraction during engine transitions, then the needle bounce becomes less distracting, but the needle visibility to the driver is reduced
Solution Approach 1:
The system dynamically adjusts light intensity based on real-time engine operating states. During transient events like engine start-up or shutdown, the system reduces light intensity to minimize distraction from needle bounce. During steady-state operation, the system increases light intensity to ensure optimal visibility, creating a dynamic response to changing conditions.
Solution Approach 2:
The light intensity parameter is changed in response to engine operating conditions. The system monitors engine state and adjusts the illumination parameter accordingly - decreasing intensity during transitions when needle bounce occurs, and maintaining or increasing intensity during stable operation when visibility is prioritized.
Data Source
AI summary
A system and method for adjusting the intensity of light provided to an analog needle are disclosed herein. The system and method adjust the intensity of light provided to the analog needle based on an operating state of an engine of a vehicle.