Engine Control Torque Feedback for Fuel Combustion
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Solution Overview
Problem
Existing engine control systems face challenges in ensuring appropriate combustion of fuel when the type or mixing ratio of fuel is incorrectly set, leading to inefficient combustion and potential engine performance issues during refueling with different types of fuel.
Innovation Solution
An engine control apparatus that acquires estimated and actual torque values to correct combustion timing and injection amounts, using a control map to adjust operating conditions based on torque differences, ensuring optimal fuel combustion regardless of fuel type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the engine control system uses a fixed injection amount and combustion timing based on user-set fuel information, then the control system is simple to operate, but the fuel combustion becomes inappropriate when user input is incorrect
Solution Approach 1:
The system measures actual torque output and compares it with expected torque values to detect combustion abnormalities. Based on this feedback, the control device automatically adjusts injection timing and amount to correct combustion issues caused by incorrect fuel type or mixing ratio, resolving the contradiction between simple operation and reliable combustion.
Solution Approach 2:
The engine control system performs self-diagnosis and self-correction by monitoring torque characteristics and automatically adjusting injection parameters when combustion abnormalities are detected, eliminating the need for user intervention while maintaining reliable operation across different fuel types.
2Device complexity
If the engine control system provides fixed injection parameters without adjustment, then the device complexity is low, but the adaptability to different fuel types is poor
Solution Approach 1:
The control device dynamically changes injection timing and injection amount parameters based on detected torque characteristics. When combustion abnormalities are detected, the system adjusts these parameters to optimize combustion for the actual fuel being used, providing high adaptability without requiring complex hardware modifications.
Solution Approach 2:
The system transitions from static fixed injection parameters to dynamic adjustable parameters that automatically adapt to different fuel conditions. The control device continuously monitors torque output and modifies injection timing and amount in real-time, enabling the engine to handle various fuel types effectively.
3Measurement precision
If the system automatically detects and corrects combustion timing based on torque measurement, then the fuel combustion accuracy is improved, but the measurement and control complexity increases
Solution Approach 1:
The system uses torque measurement as an intermediary indicator to indirectly assess combustion quality. By measuring torque output and comparing it with expected values, the system can detect combustion abnormalities without requiring direct combustion chamber sensors, achieving precise combustion monitoring through a simpler intermediary measurement approach.
Data Source
AI summary
An engine control apparatus has: a first acquiring section that acquires an estimated torque of an engine according to a current rotation speed of the engine, and an instruction value representing an injection amount of a fuel injected to a cylinder of the engine; a second acquiring section that acquires an actual torque according to an amount of generated power generated by an electric power generator coupled to an output shaft of the engine when the amount of the fuel according to the instruction value is injected to the cylinder of the engine; and a correcting section that corrects at least any one of combustion timing at which the fuel is combusted in the cylinder and the instruction value on a basis of a first torque difference between the estimated torque acquired by the first acquiring section and the actual torque acquired by the second acquiring section.