Vehicle Control for Circuit-Mode Start Sound and Fault Detection
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Solution Overview
Problem
Existing vehicles lack distinct performance differentiation between circuit mode and other modes, necessitating improved control devices to enhance circuit mode performance.
Innovation Solution
A control device with a mode determination unit to switch to circuit mode and a start sound control unit that increases the start sound of the vehicle's traveling power source, along with a fuel cut control unit to manage engine rotation speed and an abnormality determination unit to ensure safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the start sound is increased in circuit mode, then the performance differentiation between circuit mode and other modes is improved, but the risk of erroneous abnormality detection increases
Solution Approach 1:
The control device sets a specific flag before executing the start sound increase process, and uses this flag to select appropriate reference values for abnormality determination. This preliminary action ensures that the abnormality detection threshold is adjusted in advance to account for the increased start sound, preventing erroneous detection while maintaining the performance enhancement.
Solution Approach 2:
The control device changes the reference value parameter for abnormality determination based on the operating mode. When the start sound increase process is detected, a different reference value is selected compared to normal operation. This parameter change allows the abnormality detection to adapt to the altered sound conditions, maintaining detection accuracy despite the increased start sound.
2Adaptability or versatility
If the blowing rotation speed is increased to enhance start sound, then the circuit mode performance is improved, but the fuel consumption increases
Solution Approach 1:
The control device implements the start sound increase process as a temporary, periodic action rather than a continuous state. The process is activated only during the specific period when engine starting is required in circuit mode, and is automatically terminated after a predetermined time or when starting is complete. This periodic application minimizes fuel consumption while achieving the desired performance enhancement during the critical starting phase.
Solution Approach 2:
The control device dynamically adjusts the blowing rotation speed based on real-time detection of the start sound increase process. The rotation speed is increased only when the process is active and returned to normal levels when the process is terminated. This dynamic adjustment ensures that the enhanced performance is achieved only when necessary, reducing overall fuel consumption while maintaining circuit mode performance during engine starting.
Data Source
AI summary
A control device, for a vehicle, includes a mode determination unit configured to determine whether a traveling mode of the vehicle is switched to a circuit mode or not and a start sound control unit configured to execute a start sound increase process of increasing a start sound of a traveling power source of the vehicle in a case where the mode determination unit makes an affirmative determination, as compared to a case where the mode determination unit makes a negative determination.