Engine Control Method for Composite Operating Conditions
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Solution Overview
Problem
Existing engine ignition control and fuel injection systems fail to operate properly when composite operating conditions are present, lacking an effective solution for managing multiple conditions simultaneously.
Innovation Solution
A control method that determines a final control parameter value by combining reference values based on engine rotational speed and temperature with offsets specific to composite operating states, such as start-up, cold engine, accelerating, and adaptive-adjustment states, to optimize ignition timing and fuel injection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional operating condition control is used to determine ignition advance angle and fuel injection based on engine speed, temperature and throttle load, then the system is simple to implement, but the engine cannot work properly when composite conditions exist
Solution Approach 1:
The patent segments the control parameter adjustment into multiple independent operating state components (start-up state, cold engine state, accelerating state, adaptive-adjustment state). Each state has its own offset value that can be independently determined and then superimposed on the base control parameter, allowing complex composite conditions to be handled through simple addition of individual state offsets.
Solution Approach 2:
The patent merges multiple operating state offsets together through superposition to form the final control parameter adjustment. Instead of creating a completely new control system for composite conditions, it combines the effects of individual state offsets (start-up, cold engine, accelerating, adaptive-adjustment) to achieve reliable control under complex conditions while maintaining system simplicity.
2Power
If the engine operates under composite conditions without proper control strategy, then the control system remains simple, but power and combustion efficiency deteriorate
Solution Approach 1:
The patent performs preliminary determination of offset values for each operating state (start-up, cold engine, accelerating, adaptive-adjustment) before combining them. By pre-calculating and storing offset values for each individual state, the system can quickly retrieve and combine these values during composite conditions without complex real-time calculations, thus maintaining power and efficiency while keeping control strategy manageable.
Solution Approach 2:
The patent changes the control approach from direct absolute parameter setting to parameter offset adjustment. By determining base control parameters from standard tables and then applying offset adjustments for different operating states, the system achieves better power and combustion efficiency under composite conditions while avoiding the need for completely new control strategies.
3Loss of time
If traditional calibration methods are used for ignition and injection, then the system is easy to calibrate, but operation time increases under composite conditions
Solution Approach 1:
The patent segments the control parameter determination into base value lookup and offset addition steps. By separating the base control parameter determination (from speed, temperature, throttle load) from the state-specific offset adjustments, the system reduces calculation time under composite conditions while maintaining ease of calibration through standard table-based approaches.
Solution Approach 2:
The patent transforms the calibration approach from determining complete control parameters to determining only offset adjustments. This parameter change allows the system to maintain ease of calibration while significantly reducing operation time under composite conditions, as the offset values can be determined through simpler methods and then applied to base parameters.
Data Source
AI summary
A control method, a control device, an electronic device and a storage medium for engine operation are provided. The method includes: obtaining a rotational speed and a temperature of an engine at a current time and determining a reference value of the control parameter of the engine based on the rotational speed and the temperature; detecting a composite operating state of the engine at the current time and determining an offset of the control parameter corresponding to each operating state in the composite operating state; adding the reference value of the control parameter and the offset of the control parameter corresponding to each operating state in the composite operating state to obtain a final value of the control parameter; and controlling the engine at the current time according to the final value of the control parameter.