Commercial Vehicle Coasting Control Using Brake State Feedback
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Solution Overview
Problem
Conventional techniques fail to set an inertial driving mode or power driving mode in commercial vehicles based on their braking means state, leading to inefficiencies and safety concerns.
Innovation Solution
A system and method to determine the driving state and road slope of commercial vehicles, setting the driving mode to inertial when conditions are met, and switching to power mode when sufficient braking force is not secured, using a state determination unit and driving mode setting unit to control engine, power transmission, and braking means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If inertial driving mode is set based on conventional techniques (road slope only), then fuel efficiency is improved, but driving safety deteriorates due to insufficient consideration of braking means state
Solution Approach 1:
The invention changes the parameters used for inertial driving mode determination from only road slope to a comprehensive set including braking means state (temperature, wear degree, fluid pressure). This parameter expansion allows the system to evaluate both fuel efficiency and safety conditions, switching between inertial and power driving modes based on the combined assessment of multiple parameters.
2Loss of energy
If inertial driving mode is set to maximize fuel efficiency, then energy consumption is reduced, but braking performance deteriorates when braking means are in poor condition
Solution Approach 1:
The invention implements a feedback mechanism that continuously monitors the state of braking means (temperature, wear degree, fluid pressure) and uses this information to determine whether to maintain inertial driving mode or switch to power driving mode. When braking means state indicates insufficient braking performance, the system provides feedback to switch to power driving mode, ensuring safety while maintaining fuel efficiency when conditions are favorable.
3Device complexity
If conventional inertial driving control is used (ignoring braking means), then device complexity is reduced, but adaptability deteriorates to commercial vehicle specific conditions
Solution Approach 1:
The invention creates a universal control system that integrates multiple functions: road slope detection, braking means state monitoring (temperature, wear, pressure), and driving mode determination. This multi-functional system adapts to commercial vehicle specific conditions while maintaining a unified control architecture that can handle various operating scenarios through a single integrated decision-making process.
Data Source
AI summary
According to one aspect of the present invention, there is provided a method for controlling an inertial driving mode of a commercial vehicle, the method comprising the steps of: determining at least one of a driving state of a commercial vehicle and a slope state of a road on which the commercial vehicle is driving; and setting a driving mode of the commercial vehicle to an inertial driving mode in response to the driving state of the commercial vehicle satisfying a first condition or the slope state satisfying a second condition, wherein the driving mode of the commercial vehicle is switched from the inertial driving mode to a power driving mode in response to a state of a braking means of the commercial vehicle satisfying a third condition.