Accelerator Level Display Device for Fuel-Efficient Driving Guidance
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Solution Overview
Problem
Existing accelerator level display devices do not effectively assist drivers in operating within a fuel-efficient range, as they lack clear guidance on the degree of accelerator depression and fail to prevent fuel economy decreases by not displaying the causes of such decreases.
Innovation Solution
An accelerator level display device that includes a detection unit for current accelerator levels, a determining unit for target accelerator levels, and a display unit showing both current and target levels relative to each other, allowing drivers to adjust their accelerator operation to maintain fuel efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If an eco-lamp is turned on or off to indicate fuel-efficient driving, then the driver receives feedback on whether driving is suitable for improving fuel economy, but the driver cannot determine the specific degree of accelerator depression allowed within the threshold
Solution Approach 1:
The display device segments the accelerator operation guidance into two distinct components: a target accelerator level indicator showing the ideal accelerator position for fuel efficiency, and a current accelerator level indicator showing the driver's actual accelerator position. This segmentation provides specific quantitative guidance while maintaining relatively simple device structure.
Solution Approach 2:
The invention adds a spatial dimension to the feedback by displaying accelerator level indicators on a two-dimensional display screen rather than using a simple one-dimensional on/off lamp. This allows simultaneous presentation of target and current levels with clear visual differentiation, providing comprehensive guidance without excessive complexity.
2Loss of information
If instantaneous fuel economy is calculated and compared with recommended driving pattern, then fuel economy data is provided, but the driver cannot determine how to operate the accelerator before fuel economy decreases
Solution Approach 1:
The display device shows the target accelerator level in advance, allowing the driver to adjust accelerator operation before fuel economy deteriorates. By displaying the ideal accelerator position proactively rather than reacting to past fuel economy data, the system enables preventive action that improves fuel efficiency in real-time.
Solution Approach 2:
The system implements continuous feedback by simultaneously displaying both target accelerator level and current accelerator level. This real-time feedback loop allows the driver to immediately see the difference between desired and actual accelerator positions and make corrective adjustments, eliminating the time delay inherent in calculating and displaying past fuel economy data.
3Measurement precision
If the accelerator level is displayed relative to a changing target accelerator level, then accurate guidance is provided, but the display becomes difficult to understand and operate
Solution Approach 1:
The display device uses color differentiation to represent different accelerator level states. The target accelerator level indicator and current accelerator level indicator are displayed in distinct colors, enabling the driver to quickly comprehend the relationship between desired and actual accelerator positions without complex numerical data, thus maintaining ease of operation while preserving measurement precision.
Solution Approach 2:
The invention transforms the abstract concept of accelerator level difference into a visual spatial representation on a two-dimensional display. By showing target and current levels as separate visual elements with clear spatial relationships rather than numerical values, the system maintains precise measurement information while significantly improving driver comprehension and operational ease.
Data Source
Figure 1
Figure 2
Figure 3(a)~3(b)
AI summary
A disclosed accelerator level display device (1) includes an accelerator level detection unit (12) configured to detect an accelerator level; a target accelerator level determining unit (14b) configured to determine a target accelerator level for the accelerator level; and a display unit (15a, 20) wherein the target accelerator level is displayed at a fixed position and the level difference between the target accelerator level and the accelerator level is displayed relative to the target accelerator level.