Remote Engine Start System State Management
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Solution Overview
Problem
Remote engine start systems face challenges in minimizing hazards and user-friendliness, particularly in preventing uncontrolled engine operation and timer circumvention, which can lead to unnecessary fuel consumption and safety risks.
Innovation Solution
A method and system that dynamically change states based on user presence detection, using a timer to manage the remote engine start mode, storing timer values and states when the user is present, and re-establishing them when the user is absent, ensuring the engine remains on only when intended, thus preventing prolonged uncontrolled operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the remote engine start mode is deactivated when the user approaches the vehicle, then the system returns to normal state, but the engine remains activated which may lead to uncontrolled operation
Solution Approach 1:
The system dynamically adjusts its behavior based on user presence detection. When the user approaches, the system transitions from automatic deactivation to a state where the engine remains controlled but the remote start mode is deactivated, allowing the user to manually control the engine while maintaining safety protocols.
Solution Approach 2:
The system continuously monitors user presence and adjusts engine control accordingly. The detection of user presence provides feedback that triggers a state change, ensuring the engine operation aligns with actual user needs while preventing uncontrolled operation.
2Ease of operation
If the timer is stopped and reset when user presence is detected, then the engine can run indefinitely, but this allows timer circumvention and prolonged uncontrolled operation
Solution Approach 1:
The system stores the remaining timer value before stopping the timer when user presence is detected. This preliminary action preserves the original timer constraint, allowing the system to restore it later if the user moves away, thereby preventing timer circumvention while maintaining user convenience during active use.
Solution Approach 2:
The system changes the timer parameter from active counting to stored value when user presence is detected, and can restore it when the user moves away. This parameter transformation allows flexible control while maintaining the original safety constraints against uncontrolled operation.
3Ease of operation
If the engine remains activated after remote start deactivation, then user comfort is improved, but the risk of hazards increases if the user moves away again
Solution Approach 1:
The system continuously monitors user presence and adjusts engine operation in real-time. If the user moves away after initially approaching, the system detects this change and restores the timer constraint, dynamically balancing comfort and safety based on current user status.
Solution Approach 2:
The engine control system dynamically transitions between different operational states based on user presence. The engine can remain running for user comfort during active presence, but automatically restores timer-based shutdown constraints when the user moves away, ensuring safety without compromising comfort during legitimate use.
Data Source
AI summary
In response to a triggering event, changing a vehicle remote engine start system from a first state to a second state. In the first state a remote engine start mode, a drive engine of the vehicle and a plurality of vehicle functions are deactivated. In the second state the remote engine start mode, at least one of the plurality of vehicle functions and the drive engine of the vehicle are activated. After activating the remote engine start mode, a timer is incremented or decremented from a predetermined start value. If the timer has not elapsed and the presence of a user is detected, the remote engine start system changes to a third state in which the last timer value and the current state of the remote engine start mode are stored and then the remote engine start mode and the timer are stopped, wherein the drive engine remains switched on.