Fuel Efficiency Estimation via Velocity Disturbance Attenuation
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Solution Overview
Problem
Existing fuel efficiency estimation systems face high processing loads and difficulties in making real-time predictions due to fragmented geographic feature considerations, leading to inaccurate fuel efficiency calculations.
Innovation Solution
A fuel efficiency estimation system that includes a velocity profile calculation unit, a velocity disturbance calculation unit to determine an attenuation factor based on disturbance events and traveling history, and a fuel efficiency calculation unit using the velocity profile and disturbance correction coefficient to accurately estimate fuel efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If geographic features are fragmented to perform fuel efficiency calculation process, then fuel efficiency calculation accuracy is improved, but process load becomes extremely high and real-time predictions become difficult
Solution Approach 1:
The patent segments the fuel efficiency calculation process into two distinct parts: (1) a velocity profile calculation unit that computes a basic velocity profile without considering disturbances, and (2) a velocity disturbance calculation unit that separately calculates disturbance effects using an attenuation factor. This segmentation allows each unit to handle specific aspects independently, reducing overall process load while maintaining calculation accuracy.
Solution Approach 2:
The patent extracts the disturbance calculation from the main fuel efficiency calculation process. The velocity disturbance calculation unit separately computes the attenuation factor based on disturbance information and traveling history, then applies it to the basic velocity profile. This extraction reduces the computational burden on the main process, enabling real-time predictions while preserving accuracy.
2Measurement precision
If disturbance information and traveling history information are processed to calculate attenuation factor, then velocity disturbance correction accuracy is improved, but calculation complexity increases
Solution Approach 1:
The patent introduces an attenuation factor as an intermediary parameter that mediates between disturbance information and fuel efficiency calculation. The velocity disturbance calculation unit uses the attenuation factor to represent the combined effect of multiple disturbances, simplifying the overall calculation while maintaining accuracy in representing velocity changes due to disturbances.
Solution Approach 2:
The patent changes the representation of disturbance effects from detailed individual disturbance calculations to a single attenuation factor parameter. This parameter transformation simplifies the calculation complexity by consolidating multiple disturbance influences into one adjustable parameter that can be applied to the velocity profile without requiring complex multi-parameter calculations.
Data Source
AI summary
A fuel efficiency estimation system includes: a velocity profile calculation unit to calculate a velocity profile indicating a change in velocity of a motor vehicle traveling a traveling route; a velocity disturbance calculation unit to calculate, based on disturbance information indicating a disturbance event occurring on the traveling route and traveling history information collected from the motor vehicle traveling the traveling route, an attenuation factor, which is a ratio of attenuation of the velocity of the motor vehicle traveling the traveling route, as a velocity disturbance correction coefficient; and a fuel efficiency calculation unit to calculate fuel efficiency of the motor vehicle traveling the traveling route by using the velocity profile and the velocity disturbance correction coefficient.