Vehicle Drive Force Control Based on Green Power Availability
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Solution Overview
Problem
There is a demand for techniques that effectively prompt users to use environmentally friendly energy sources in vehicles to reduce greenhouse gas emissions.
Innovation Solution
A vehicle system that includes an energy source storage device and a control device, which classifies energy sources by greenhouse gas emission intensity and limits driving force when the proportion of low-emission energy is low, motivating users to increase the use of environmentally friendly energy by reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If driving force is limited when the amount of first energy source is small, then users are prompted to use environmentally friendly energy sources, but vehicle performance and user satisfaction deteriorate
Solution Approach 1:
The control device dynamically adjusts the driving force limitation based on the amount of first energy source in the energy source storage device. When the amount of first energy source is sufficient, the driving force is not limited, maintaining normal vehicle performance. When the amount becomes small, the driving force is limited to prompt users to use environmentally friendly energy sources. This dynamic adjustment resolves the contradiction between reducing emissions and maintaining performance.
2Use of energy by moving object
If driving force is limited to reduce power consumption, then greenhouse gas emissions are reduced, but vehicle usability and user experience worsen
Solution Approach 1:
The system changes the parameter of driving force limitation based on the state of the energy source storage device. The control device monitors the amount of first energy source and adjusts the driving force parameter accordingly. This parameter change approach allows the system to reduce power consumption when necessary while maintaining full usability when the energy source is sufficient, resolving the contradiction between energy efficiency and usability.
3Object-generated harmful factors
If the control device continuously monitors and adjusts driving force based on energy source amount, then environmental friendliness is improved, but system complexity increases
Solution Approach 1:
The control device implements a feedback mechanism by continuously monitoring the amount of first energy source in the energy source storage device and adjusting the driving force accordingly. This feedback loop enables the system to automatically respond to changes in energy source availability, managing emission intensity without requiring complex manual intervention or overly complicated control algorithms.
Data Source
AI summary
Vehicles include a battery, a MG, and an ECU. The battery stores electric power as an energy source of the vehicle. MG generates the driving force of the vehicles by consuming power. ECU controls MG. Battery power includes green power and non-green power, each classified according to the greenhouse gas emission intensity. The emission intensity of green power is smaller than that of non-green power. ECU controls MG so as to limit the driving force in a case where the amount of green power in the electric power of the battery is small than the driving force in a case where the amount of green power in the electric power of the battery is large.