Automatic Transmission Prepared State for Acceleration Response
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Solution Overview
Problem
Conventional vehicles experience delays in accelerating due to the time required for transmission ratio changes, which can lead to inadequate power for rapid maneuvers like changing lanes or passing other vehicles, compromising safety and efficiency.
Innovation Solution
A system that uses sensors to detect environmental conditions and automatically adjusts the transmission from a normal to a prepared state when a likelihood of increased acceleration is detected, allowing for quicker ratio changes and preserving fuel efficiency by reverting to the normal state if no user indication for increased ratio is given.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the transmission uses a low transmission ratio to conserve energy during constant speed or low acceleration, then energy efficiency is improved, but power output becomes insufficient for rapid acceleration
Solution Approach 1:
The system performs preliminary action by detecting environmental conditions (such as presence of other vehicles, lane conditions) and proactively changing the transmission ratio to a higher gear before the driver actually presses the accelerator. This anticipatory gear change ensures that when rapid acceleration is needed, the transmission is already in the optimal ratio, eliminating the delay between driver input and power delivery while maintaining energy efficiency during normal cruising.
2Power
If the transmission ratio is increased rapidly to achieve target acceleration, then power output is improved, but delay occurs due to hydraulic fluid filling time and multiple ratio changes
Solution Approach 1:
The system performs preliminary action by detecting environmental conditions (such as presence of other vehicles, lane conditions) and proactively changing the transmission ratio to a higher gear before the driver actually presses the accelerator. This anticipatory gear change ensures that when rapid acceleration is needed, the transmission is already in the optimal ratio, eliminating the delay between driver input and power delivery while maintaining energy efficiency during normal cruising.
3Power
If the transmission ratio is increased multiple times to reach target ratio, then power output is improved, but the number of hydraulic operations and time required increases
Solution Approach 1:
The system performs preliminary action by detecting environmental conditions (such as presence of other vehicles, lane conditions) and proactively changing the transmission ratio to a higher gear before the driver actually presses the accelerator. This anticipatory gear change ensures that when rapid acceleration is needed, the transmission is already in the optimal ratio, eliminating the delay between driver input and power delivery while maintaining energy efficiency during normal cruising.
4Use of energy by moving object
If the transmission operates in normal state to preserve fuel efficiency, then energy consumption is reduced, but acceleration response is delayed when sudden power is needed
Solution Approach 1:
The system applies dynamics by implementing two operational states: normal state for fuel-efficient cruising and prepared state for rapid acceleration. The transmission dynamically transitions between these states based on real-time environmental conditions detected by sensors. When conditions suggest upcoming acceleration needs (such as detecting a slower vehicle ahead or open lane), the system shifts to prepared state with higher transmission ratio, ensuring immediate power availability while returning to normal state afterward to maintain fuel efficiency.
Data Source
AI summary
The present invention relates to a method and system for automated control of transmission ratio change which balances the requirements for power with energy efficiency. A plurality of sensors detect environmental conditions of a vehicle. An environmental conditions analysis unit analyzes the environmental conditions to determine whether the detected environmental conditions indicate a likelihood of a transmission ratio increase. When the detected environmental conditions indicate the likelihood of the transmission ratio increase, an automatic transmission changes in operation from a normal state to a prepared state. However, after a predetermined amount of time, the automatic transmission changes from the prepared state back to the normal state when there is no user indication that the transmission ratio should be increased.