Vehicle Control Apparatus Engine Stop Lane Departure
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Solution Overview
Problem
Existing vehicle control systems that combine lane departure prevention and automatic engine stop mechanisms face issues with insufficient electric power supply to systems like EPS and ECB, leading to ineffective lane keeping assist control due to engine stoppage.
Innovation Solution
A vehicle control apparatus with dual controllers: one for departure prevention and another for automatic engine stop and restart, which prohibits engine stop when the vehicle is about to depart from a lane, ensuring continuous power supply to critical systems by controlling the motor's operation and setting threshold conditions for engine restart.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the engine is automatically stopped to improve fuel consumption, then energy efficiency is improved, but the electric power supply to EPS and ECB becomes insufficient
Solution Approach 1:
The system performs preliminary detection of lane departure risk and proactively manages engine stop/start timing. When lane departure is detected, the system prevents engine stop or initiates engine restart before power deficiency occurs, ensuring EPS and ECB have adequate power while still enabling fuel-saving engine stop during normal operation
Solution Approach 2:
The system continuously monitors vehicle state, lane position, and engine operation status to dynamically adjust engine stop/start control. Based on feedback from lane departure detection and power consumption analysis, the system adaptively manages engine operation to balance fuel efficiency with adequate power supply for safety systems
2Loss of energy
If the engine is automatically stopped, then fuel consumption is reduced, but the lane keeping assist control becomes ineffective
Solution Approach 1:
The system detects lane departure risk in advance and proactively manages engine operation. When lane departure is detected, the system prevents engine stop or initiates engine restart before power deficiency occurs, ensuring EPS has adequate power for lane keeping assist control while still enabling fuel-saving engine stop during normal operation
Solution Approach 2:
The system continuously monitors lane position, vehicle state, and engine operation to dynamically adjust engine stop/start control. Based on feedback from lane departure detection and power consumption analysis, the system adaptively manages engine operation to balance fuel efficiency with adequate power supply for lane keeping assist control
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Prevents vehicle lane departure by maintaining adequate electric power to EPS and ECB, ensuring effective operation and preventing insufficient power issues during engine stop and restart scenarios.
Implementation Method 1
a motor configured to start the engine
Data Source
AI summary
A vehicle control apparatus is mounted on a vehicle, which includes an engine and a motor configured to start the engine. The vehicle control apparatus is provided with: a first controller programmed to perform a departure prevention control, which is to prevent the vehicle from departing from a driving lane, when the vehicle is about to depart from the driving lane; and a second controller programmed to perform an automatic stop control, which is to automatically stop the engine on condition that a predetermined stop condition is satisfied, and which is to operate the motor and to restart the engine on condition that a predetermined start condition is satisfied after the engine is automatically stopped. The first controller is programmed to prohibit a start of an automatic stop of the engine by the automatic stop control, when the vehicle is about to depart from the driving lane.