Multi-Fuel Engine Control System for Leak Detection and Fuel Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing multi-fuel engine systems face challenges in maintaining performance over time due to wear and degradation of engine parts, and current systems lack effective methods for optimizing fuel usage and detecting leaks in gaseous fuel systems, leading to inefficiencies and emissions.
Innovation Solution
A multi-fuel capable engine system that includes a liquid fuel system, a gaseous fuel system, and a control system with processors to monitor pressure drops across gaseous fuel valves, indicating leaks and adjusting fuel amounts based on route information, fuel market data, and remaining fuel quantities, while also performing performance tests and venting excess gaseous fuel to ensure optimal operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the engine operates for extended periods, then productivity is maintained, but wear and degradation of engine parts occurs affecting performance
Solution Approach 1:
The control system continuously monitors engine parameters including knock sensor outputs from individual cylinders, pressure drops across gaseous fuel valves, and fuel consumption data. This feedback enables real-time detection of wear, degradation, and performance deviations, allowing the system to adjust fuel injection timing, valve timing, and fuel mix ratios to maintain consistent performance despite component aging.
Solution Approach 2:
The system dynamically adjusts operating parameters based on monitored conditions. The controller modifies fuel injection timing, compression ratio, air-fuel mixture ratios, and valve timing in real-time response to detected wear patterns and performance changes, enabling the engine to adapt to component degradation and maintain optimal performance throughout extended operation.
2Object-affected harmful factors
If gaseous fuel valves are closed to prevent leaks, then safety is improved, but pressure drop indicates potential leaks that affect system efficiency
Solution Approach 1:
The control system continuously monitors pressure drops across closed gaseous fuel valves using sensors in the gaseous fuel supply line. This feedback mechanism detects even minor pressure deviations that indicate leaks, allowing the system to identify leakage issues without requiring the valves to remain open, thus maintaining safety while detecting efficiency losses.
Solution Approach 2:
The system replaces manual leak detection methods with electronic pressure monitoring and control. Instead of relying on mechanical leak tests or physical inspection, the system uses electronic sensors and automated control to detect pressure drops, enabling continuous monitoring and real-time response to leakage issues.
3Productivity
If fuel amounts are optimized based on multiple factors, then efficiency is improved, but system complexity increases
Solution Approach 1:
The control system is designed as a multi-functional integrated controller that handles fuel optimization, leak detection, performance monitoring, and emissions control simultaneously. By consolidating these functions into a single control architecture, the system achieves comprehensive fuel efficiency optimization without proportionally increasing overall system complexity.
Solution Approach 2:
The system automatically optimizes fuel injection timing and air-fuel ratios based on real-time monitoring of engine conditions, knock sensor outputs, and pressure data. The control algorithm self-adjusts operating parameters without requiring manual intervention, reducing the operational complexity burden while maintaining high fuel efficiency.
4Measurement precision
If individual cylinder knock sensors are used to detect combustion issues, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The knock detection system is segmented into individual cylinder-level sensors, with each cylinder equipped with its own knock sensor. This segmentation enables precise, localized detection of combustion knock in specific cylinders, allowing the control system to identify and address individual cylinder issues without affecting the entire engine operation.
Solution Approach 2:
By implementing knock sensors at the individual cylinder level rather than using a single engine-wide sensor, the system achieves local quality measurement - detecting knock characteristics specific to each cylinder's combustion conditions. This enables differentiated control strategies for individual cylinders based on their specific knock patterns.
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 system maintains engine performance by detecting and addressing leaks, optimizing fuel usage, and minimizing emissions, ensuring efficient operation across various engine operating points and reducing the risk of fuel exhaustion imbalances.
Implementation Method 1
monitor a respective pressure drop across the one or more closed gaseous fuel valves at least in part by receiving information indicating a respective pressure upstream and a respective pressure downstream of the one or more closed gaseous fuel valves
Implementation Method 2
a liquid fuel system to deliver liquid fuel to the engine
Implementation Method 3
a gaseous fuel system to deliver gaseous fuel to the engine
Implementation Method 4
combusting the first fuel and the second fuel in an engine
Data Source
AI summary
Various methods and systems are provided for a multi-fuel capable engine. The system includes a liquid fuel system to deliver liquid fuel to an engine, a gaseous fuel system to deliver gaseous fuel to the engine, and a control system. The control system can control and test the liquid and gaseous fuel systems.