Vehicle Drive Mode Control for Delayed Motor Priority Cancellation
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Solution Overview
Problem
Users experience discomfort due to the sudden cancellation of motor drive priority mode when changing vehicle drive modes, leading to unusual engine starting sensations.
Innovation Solution
A vehicle control system that suspends the cancellation of motor drive priority mode when changing from the first drive mode to the second drive mode, and cancels it only after a predetermined time if the vehicle is drivable, while displaying the status changes on a user interface to manage user expectations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the motor drive priority mode is canceled immediately when changing drive mode, then the drive mode switching is efficient and responsive, but the user experiences discomfort and strangeness due to sudden engine starting
Solution Approach 1:
The system performs preliminary action by suspending the cancellation of motor drive priority mode before the drive mode change is fully executed. This allows the system to prepare for the mode transition in advance, preventing the sudden engine start that causes user discomfort, while still maintaining the efficiency of drive mode switching.
Solution Approach 2:
The system applies dynamics by making the cancellation timing of motor drive priority mode flexible rather than fixed. The cancellation is suspended during the transition period and executed at an optimal moment after the transition, allowing the system to adapt to the dynamic state changes during drive mode switching and reduce user discomfort.
2Ease of operation
If the cancellation of motor drive priority mode is suspended during drive mode transition, then user comfort is improved, but the response time of the system increases
Solution Approach 1:
The system uses periodic action by implementing a suspension period with a predetermined time limit. The cancellation of motor drive priority mode is suspended for this specific period during drive mode transition, then automatically executed if the transition completes successfully. This periodic suspension balances user comfort with system responsiveness.
3Loss of information
If the system provides clear visual cues about mode transition status, then user understanding is improved, but the display system complexity increases
Solution Approach 1:
The system applies color changes by displaying different colors or visual states on the display unit to indicate the suspension status of motor drive priority mode cancellation. This provides clear visual cues to users about the current mode transition status without requiring complex display control mechanisms, maintaining simplicity while improving user understanding.
Data Source
AI summary
A vehicle control system includes a mode setting control unit that suspends cancellation of a motor drive priority mode when a drive mode is changed from a first drive mode to a second drive mode in response to acceptance of a change to the second drive mode when a driving status recognition unit recognizes that a vehicle is able to drive or is driving in a state in which the motor drive priority mode is set and the drive mode is set to the first drive mode, and cancels the suspension to cancel the motor drive priority mode when the drive mode change acceptance unit does not accept a change to the third drive mode during a first suspension period.