Electronic Control Unit for Dynamic Gear Shift Optimization
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Solution Overview
Problem
Existing vehicle fuel efficiency systems rely on preconfigured engine speed thresholds and wheel torque ratios, which are insufficient for optimizing gear shifts based on multiple vehicle performance characteristics, leading to suboptimal fuel consumption and driveability.
Innovation Solution
An electronic control unit monitors various vehicle performance characteristics to determine the ideal gear ratio for shifting, ensuring minimum driveability is maintained while reducing fuel consumption, and presents a shift indicator to the operator to prompt gear changes based on calculated conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If preconfigured engine speed thresholds and wheel torque ratios are used to determine gear shifts, then the system complexity is reduced, but fuel consumption optimization is insufficient
Solution Approach 1:
The system dynamically changes multiple operating parameters simultaneously (engine speed, vehicle speed, acceleration rate, torque, gear position) rather than relying on fixed thresholds. This allows the system to identify optimal gear shift points that truly minimize fuel consumption while adapting to real-time driving conditions, thereby resolving the contradiction between system complexity and fuel optimization effectiveness.
Solution Approach 2:
The system transitions from static preconfigured thresholds to dynamic real-time monitoring and calculation of gear shift recommendations. By continuously adjusting gear shift decisions based on current vehicle state and predicted future states, the system achieves better fuel economy without requiring excessively complex hardware, thus balancing complexity and performance.
2Loss of energy
If multiple vehicle performance characteristics are monitored to optimize fuel efficiency, then fuel consumption is reduced, but the device complexity increases
Solution Approach 1:
The electronic control unit performs multiple functions using a single integrated system: it monitors various vehicle parameters, calculates predicted operating conditions, determines optimal gear shifts, and provides recommendations to the operator. This multi-functional approach consolidates what could be multiple separate systems into one unified device, reducing overall complexity while achieving comprehensive fuel optimization.
Solution Approach 2:
The system uses the vehicle's existing sensors and control unit to gather necessary data and perform calculations, rather than requiring entirely new dedicated hardware. By leveraging existing vehicle components for fuel optimization purposes, the system achieves reduced fuel consumption without proportionally increasing device complexity.
3Loss of energy
If gear shifts are optimized for fuel efficiency, then fuel consumption is lowered, but driveability may be compromised
Solution Approach 1:
The system calculates predicted future operating conditions before recommending a gear shift, ensuring that the shift will result in desirable outcomes. By looking ahead and simulating future states, the system can identify shift opportunities that improve fuel economy while maintaining or enhancing driveability, rather than making reactive shifts that might compromise performance.
Solution Approach 2:
The system continuously monitors actual vehicle performance and compares it with predicted conditions to refine its gear shift recommendations. This feedback mechanism ensures that fuel efficiency optimizations do not degrade driveability, as the system adapts its recommendations based on real-world performance data and operator responses.
Data Source
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AI summary
Systems and methods for displaying a driver shift aid are disclosed. In one aspect, an electronic control unit causes a shift indicator to be presented if a need for a shift is detected and vehicle performance after the shift would not be unduly impacted. If the vehicle operator follows the guidance of the shift indicator, vehicle fuel efficiency may be improved while vehicle performance remains adequate. In one aspect, a different indicator may be displayed to prompt the vehicle operator to shift either one gear or two gears.