Vehicle Control Apparatus Automatic Parking Power Cutoff
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Solution Overview
Problem
During automatic parking control, there is a risk of vehicle emergency states and shock generation due to improper operation of the manual shifting device, especially when the foot brake is not operated or when shifting between forward and reverse directions, leading to reduced drivability and potential accidents.
Innovation Solution
A control apparatus that includes an automatic parking control system, which places the automatic transmission in a power-cutoff state when the manual shifting device is operated to change directions, and then shifts it to the corresponding drive or parking position, reducing shock and ensuring safe operation by prioritizing the manual shifting device's commands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the automatic transmission is shifted according to the manual shifting device operation during automatic parking control, then the ease of operation is improved, but the vehicle may enter an emergency state contrary to operator intention
Solution Approach 1:
The control apparatus applies preliminary anti-action by detecting when the manual shifting device is operated during automatic parking control and proactively preventing the automatic transmission from shifting to positions that would create emergency states. The control unit inhibits the automatic shifting action before it can occur, ensuring the transmission only shifts when the manual device is in the appropriate position, thus preventing contradictory vehicle behaviors before they happen.
2Reliability
If the foot brake is operated when shifting to opposite direction, then the reliability is improved, but a shock is generated reducing drivability
Solution Approach 1:
The control apparatus applies dynamics by adaptively adjusting the shifting control strategy based on the operational context. When the foot brake is detected as operated during a shift to an opposite direction position, the control unit dynamically modifies the shifting execution timing and manner to reduce shock generation. This allows the system to maintain safety requirements while optimizing for smooth operation and drivability under different braking conditions.
Data Source
AI summary
A control apparatus for a vehicle provided with drive wheels, an automatic transmission, and a manual shifting device for shifting the automatic transmission, the control apparatus includes an automatic parking control portion configured to implement an automatic parking control for automatically parking the vehicle in a predetermined parking space, and controls the automatic transmission to be shifted according to a shifting control signal corresponding to an operation of the manual shifting device, the automatic parking control portion comprising a shifting control portion configured to place the automatic transmission in a power-cutoff state in which a vehicle drive force is not transmitted to the drive wheels, when the manual shifting device is operated to a position a running direction in which is different from a running direction of the vehicle when the automatic parking control is implemented.