Vehicle Transmission Control Unit Automatic Data Selection
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Solution Overview
Problem
The existing method of separately installing and replacing transmission control units for automatic transmissions in vehicles increases costs and processing time, and can lead to errors if the wrong unit is installed.
Innovation Solution
A control apparatus and method that uses a speed sensor, memory unit, and control unit to automatically select and store the appropriate transmission control data by comparing actual driving speed with calculated speeds through different final reduction gear ratios, allowing the transmission control unit to switch between data sets based on specific conditions, thereby eliminating the need for separate installation or replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission control units are separately installed for each transmission specification, then the transmission can be controlled with dedicated data, but the production cost and processing time increase
Solution Approach 1:
The patent applies universality by designing a single transmission control unit that can store and switch between multiple sets of final reduction gear ratio data corresponding to different transmission specifications. This allows one control unit to serve multiple transmission types, eliminating the need for separate control units for each specification while maintaining accurate control through data switching based on the installed transmission type.
Solution Approach 2:
The patent changes the parameter of stored data by maintaining multiple sets of final reduction gear ratio data with different values in the same transmission control unit. The control unit switches between these different data sets based on the detected transmission specification, allowing accurate control adaptation without physical hardware changes or separate control units.
2Reliability
If transmission control units are separately installed for each transmission specification, then the transmission can be controlled with dedicated data, but the installation process becomes more complex and error-prone
Solution Approach 1:
The transmission control unit automatically detects the installed transmission specification and selects the appropriate final reduction gear ratio data set without requiring manual intervention or operator judgment. This self-service capability eliminates the complexity of manual matching and reduces the risk of human error in selecting the correct control data for the installed transmission.
Solution Approach 2:
The control unit uses feedback from speed sensor data and driving condition detection to automatically determine which transmission specification is installed and switch to the corresponding final reduction gear ratio data set. This feedback mechanism ensures the correct control data is always used without requiring complex installation procedures or operator expertise.
3Reliability
If multiple transmission control units are kept in inventory for different specifications, then the correct unit can be installed, but inventory costs and storage requirements increase
Solution Approach 1:
The patent applies universality by designing a single transmission control unit that can store and switch between multiple sets of final reduction gear ratio data corresponding to different transmission specifications. This allows one control unit to serve multiple transmission types, eliminating the need for separate control units for each specification while maintaining accurate control through data switching based on the installed transmission type.
Data Source
AI summary
Provided are a control apparatus and a control method for a vehicle capable of automatically storing transmission control data corresponding to a transmission after the transmission is installed. The control apparatus for the vehicle includes a speed sensor for measuring the actual driving speed of a vehicle; a memory unit for storing first final reduction gear ratio data and second final reduction gear ratio data; and a control unit for setting a final reduction gear ratio corresponding to an installed transmission by comparing a difference between the actual driving speed of the vehicle received from the speed sensor and the driving speed of the vehicle calculated through a first final reduction gear ratio with a difference between the actual driving speed of the vehicle and the driving speed of the vehicle calculated through a second final reduction gear ratio.