Fuel Injection Control Device Dynamic Correction Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fuel injection control systems for internal combustion engines face challenges in accurately correcting fuel injection variations due to individual differences and aging, leading to overcorrection issues and prolonged convergence times.
Innovation Solution
A fuel injection control device that acquires dynamic and injection amount parameters to calculate dynamic and injection amount correction values, allowing for precise fuel injection correction by prioritizing dynamic correction followed by injection amount correction, thereby avoiding double correction of dynamic errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If both dynamic correction and injection amount correction are applied simultaneously, then fuel injection accuracy is improved, but overcorrection occurs and convergence time increases
Solution Approach 1:
The correction process is divided into two distinct segments: dynamic correction (addressing valve opening/closing timing variations) and injection amount correction (addressing fuel quantity variations). By segmenting the correction into separate sequential steps rather than simultaneous application, the system avoids overcorrection while maintaining high accuracy, thereby reducing convergence time.
2Measurement precision
If multiple correction methods are applied to compensate for individual differences and aging, then fuel injection accuracy is improved, but system complexity increases
Solution Approach 1:
The control system segments correction into two distinct parameters: dynamic correction values (for valve timing variations) and injection amount correction values (for fuel quantity variations). This segmentation allows each correction type to be calculated and applied independently, managing complexity while achieving comprehensive accuracy improvement for individual differences and aging effects.
Solution Approach 2:
The system introduces two separate correction parameters (dynamic correction value and injection amount correction value) to address different aspects of fuel injection variation. By changing the parameter structure from a single correction value to two distinct parameters, the system can compensate for both dynamic valve behavior changes and static injection amount deviations without excessive complexity.
3Measurement precision
If correction values are calculated based on multiple parameters, then correction accuracy is improved, but calculation complexity increases
Solution Approach 1:
The calculation process is segmented into two independent calculation paths: one for dynamic correction values (based on dynamic parameters) and one for injection amount correction values (based on injection amount parameters). This segmentation reduces calculation complexity by avoiding the need to compute a single complex correction value that would require considering all factors simultaneously.
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
The solution enables accurate and efficient correction of fuel injection variations, preventing overcorrection and ensuring timely convergence of fuel correction amounts, thus improving engine performance.
Implementation Method 1
causes a valve body to be in a valve open state accompanying an energization of the fuel injection valve to inject fuel
Data Source
AI summary
A fuel injection control device is applied to an internal combustion engine including a fuel injection valve and causes a valve body to be in a valve open state accompanying an energization of the fuel injection valve to inject fuel. The fuel injection control device acquires a dynamic parameter. The fuel injection control device acquires an injection amount parameter. The fuel injection control device calculates, based on the dynamic parameter, a dynamic correction value. The fuel injection control device calculates, based on the injection amount parameter, an injection amount correction value. The fuel injection control device corrects a fuel injection using the dynamic correction value and the injection amount correction value.