Remote Start-Up ECU Parking Valve Position Verification
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Solution Overview
Problem
When a vehicle is parked on an inclined surface due to compressed air leakage, remote start-up systems may inadvertently release the parking mechanism, risking vehicle movement during engine startup, as they lack information on the parking valve's position relative to the parking lever.
Innovation Solution
An electronic system that generates an electrical signal based on the parking lever's position and transmits it to the remote start-up ECU, preventing engine startup unless the parking lever is in the correct position, ensuring the parking valve operates correctly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If remote start-up is enabled without verifying parking valve position, then convenience of remote start-up is improved, but vehicle safety deteriorates due to risk of unintended movement
Solution Approach 1:
The system introduces feedback by having the remote start-up ECU receive and process information about the parking lever position from the parking valve. This feedback mechanism allows the system to verify the current parking state before enabling remote start-up, ensuring that the vehicle is in a safe state for remote operation and preventing unintended vehicle movement.
Solution Approach 2:
The system performs preliminary verification of the parking valve position before allowing remote start-up to occur. The remote start-up ECU checks whether the parking lever is in the correct position (indicating the vehicle is properly parked) before transmitting the engine start-up signal, thus preventing premature or unsafe remote start-up operations.
2Reliability
If the system checks parking lever position before remote start-up, then vehicle safety is improved, but system complexity increases due to additional signaling requirements
Solution Approach 1:
The electrical signal generated by the parking valve serves multiple functions: it indicates the parking lever position to the remote start-up ECU and simultaneously serves as a verification condition for enabling remote start-up. This multi-functionality reduces the need for separate verification systems and minimizes overall system complexity while maintaining safety.
3Reliability
If compressed air leakage occurs on inclined surface, then parking mechanism may fail, but adding position verification system increases manufacturing cost
Solution Approach 1:
The system replaces complex mechanical verification mechanisms with an electrical signaling and control system. The parking valve's electrical signal about lever position is processed by the remote start-up ECU, which then controls whether to enable remote start-up. This electrical control approach is simpler to manufacture and implement compared to mechanical interlocking systems.
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 unintended vehicle movement by ensuring the parking valve's operation aligns with the driver's intent, enhancing safety during remote start-up by verifying the parking lever's position before initiating engine startup.
Implementation Method 1
When the driver moves the parking lever for a parking operation and the plunger passes through an inlet of the plunger guide, the plunger may be pressed by the plunger guide and the pressed plunger presses the negative electrode to be in contact with the positive electrode and be electrically conducted. As a result, the electrical signal may be generated and transmitted to the remote start-up ECU.
Data Source
AI summary
A remote start-up operating method and a method for preventing parking malfunction during remote start-up is provided. The method includes determining whether a remote start-up ECU receives a remote start-up signal and determining whether the remote start-up ECU receives an electrical signal that indicates whether to operate a parking valve based on a position of a parking lever. An engine start-up signal is then transmitted to an engine ECU.