Engine Fueling Control for Injector Drift Compensation
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Solution Overview
Problem
Improper fuel injection due to fuel injector drift causes engine damage and decreased performance in internal combustion engines, particularly in dual fuel engines where different fuels with varying energy densities are used.
Innovation Solution
A control system with sensors and a controller that estimates actual fueling amounts and determines compensation amounts for fuel injectors based on cylinder conditions, adjusting fueling commands to account for injector drift and ensure accurate fuel substitution rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If fuel injector drift occurs, then fuel injection accuracy deteriorates, but engine performance and reliability worsen
Solution Approach 1:
The system employs feedback control by continuously monitoring actual fueling amounts through cylinder sensors and comparing them against commanded fueling amounts. The controller adjusts fueling commands based on the difference between actual and commanded values, creating a closed-loop system that compensates for injector drift and maintains accurate fuel injection despite component degradation over time.
2Productivity
If fuel substitution rates are imprecise, then engine performance deteriorates, but fuel injection accuracy worsens
Solution Approach 1:
The system uses feedback control to monitor actual fueling amounts and adjust fueling commands accordingly. By continuously comparing actual fuel substitution rates against target rates and modifying injection commands in real-time, the system maintains precise fuel substitution rates that optimize engine performance while compensating for injector drift and fuel property variations.
Data Source
AI summary
A control system for an internal combustion engine structured to operate using at least a first fuel includes at least one sensor configured to sense a condition within at least one cylinder of the internal combustion engine, and a controller operably connected to the at least one sensor. The controller is configured to receive at least one fueling request corresponding to at least the first fuel, send at least one fueling command to at least one injector within the internal combustion engine system corresponding to the at least one fueling request, receive at least one signal from the at least one sensor corresponding to the condition, estimate an actual fueling amount within the internal combustion engine based on the at least one signal, and determine at least one compensation amount corresponding to the at least one injector based on the actual fueling amount.