Hybrid Vehicle Catalyst Heating Control via Speed-Linked Output Data
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Solution Overview
Problem
Existing hybrid vehicle control systems fail to perform catalyst heating control at a suitable timing due to the lack of vehicle speed linkage in output data collected at cloud servers, leading to discrepancies between calculated and actual outputs, especially during varying driving conditions such as congestion.
Innovation Solution
A control device and system for hybrid vehicles that communicate with a server storing output data linked with vehicle speeds for each road section, allowing the calculation of scheduled vehicle demanded output and timely catalyst heating control by using the internal combustion engine only when necessary, based on acquired parameter values from the server.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If output data from multiple vehicles is collected at a cloud server without vehicle speed linkage, then data quantity is increased, but data accuracy and reliability deteriorate due to mixing data from different driving conditions
Solution Approach 1:
The patent segments the aggregated output data by vehicle speed ranges, creating separate data sets for different speed conditions (e.g., low speed, medium speed, high speed). This segmentation prevents mixing of data from different driving conditions, thereby maintaining data reliability while preserving the benefits of aggregated data quantity from multiple vehicles.
2Ease of operation
If catalyst heating control is performed without accurate scheduled output calculation, then control simplicity is maintained, but catalyst heating timing accuracy deteriorates
Solution Approach 1:
The system performs preliminary calculation of the scheduled vehicle demanded output before actual driving occurs. By using historically aggregated data segmented by vehicle speed to pre-calculate expected output requirements for upcoming road sections, the system can determine optimal catalyst heating timing in advance, achieving both simplicity and precision.
3Temperature
If the internal combustion engine is operated continuously for catalyst heating, then catalyst temperature is maintained, but energy consumption and emissions increase
Solution Approach 1:
Instead of continuous engine operation, the system implements periodic or intermittent catalyst heating control based on predicted future output demands. The engine is operated only during specific periods when catalyst heating is actually needed, as determined by the scheduled output calculation, thereby maintaining catalyst temperature when necessary while minimizing energy consumption and emissions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise catalyst heating control at the right moment to prepare for increased vehicle output demands, improving exhaust emission management and reducing the risk of prolonged internal combustion engine operation for heating purposes.
Implementation Method 1
an internal combustion engine provided with a catalyst device for purifying exhaust discharged from an engine body
Implementation Method 2
heat the catalyst device before using the output of the internal combustion engine as part of the drive power
Data Source
AI summary
A control device for a hybrid vehicle includes a driving control part configured to acquire for each driving road section from a server a value of the output parameter linked with a vehicle speed of the same extent as the scheduled vehicle speed when driving over a driving road section on a scheduled driving route to calculate for each driving road section the scheduled vehicle demanded output when driving over the driving road section or acquire from the server the scheduled vehicle demanded output for each driving road section calculated based on the value of the output parameter for each driving road section at the server to heat the catalyst device before using the output of the internal combustion engine as part of the drive power when there is the driving road section where the scheduled vehicle demanded output becomes the engine start output or more.