Fuel Control System with Flow Cell for Dynamic Blending
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current fuel systems for internal combustion engines face challenges in maximizing the utilization of alternate fuels while maintaining compliance with governmental regulations and tracking renewable energy credits, as they often require fixed blending ratios that limit the use of renewable fuels and lead to cross-contamination of fuel types, affecting the purity and classification of alternate fuels.
Innovation Solution
A fuel control system that includes separate primary and alternate fuel sources, a flow cell for blending and storage, and an electronic controller for precise measurement and blending of fuels, preventing cross-contamination and allowing for dynamic adjustment of fuel ratios based on real-time conditions, including geographical location and user preferences, while tracking RINs and financial incentives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If fixed blending ratios are used to ameliorate alternate fuel negative attributes, then engine compatibility is improved, but alternate fuel utilization is limited
Solution Approach 1:
The system dynamically adjusts blending ratios based on real-time conditions including temperature, fuel quality, and engine requirements. The controller monitors alternate fuel properties and automatically modifies blend proportions to optimize both engine compatibility and fuel utilization, transitioning from static to dynamic blending control.
Solution Approach 2:
The system changes blending parameters (ratio, temperature, pressure) based on detected conditions. When alternate fuel temperature drops, the system adjusts blend ratio to maintain流动性. When fuel quality varies, the system modifies blending parameters to ensure reliable engine operation while maximizing renewable fuel usage.
2Adaptability or versatility
If separate fuel storage vessels are used for primary and alternate fuels, then fuel selection flexibility is improved, but cross-contamination risk increases
Solution Approach 1:
The system segments fuel storage into separate primary and alternate fuel vessels, allowing independent storage and selection. Each vessel has dedicated fuel lines and control mechanisms that prevent mixing, maintaining fuel purity while enabling flexible selection based on engine requirements and regulatory constraints.
Solution Approach 2:
A flow cell serves as an intermediary mixing chamber where selected primary and alternate fuels are combined in controlled proportions before reaching the engine. This intermediary component enables precise blend ratio control and RIN tracking while preventing direct contact between fuel storage vessels and the engine, reducing contamination risk.
3Reliability
If RIN extraction is performed at blending time, then regulatory compliance is improved, but fuel purity tracking becomes more complex
Solution Approach 1:
The system implements feedback control for RIN tracking by continuously monitoring fuel flow rates, blend ratios, and fuel type identification. The controller receives real-time data from sensors and automatically adjusts blending parameters to maintain accurate RIN accounting, ensuring regulatory compliance through automated feedback-based tracking.
Solution Approach 2:
The system replaces complex mechanical tracking mechanisms with electronic sensors and digital control systems. Electrical sensors monitor fuel flow and blend ratios, while digital processors track RINs and fuel purity, simplifying the tracking process while maintaining regulatory compliance through precise electronic measurement and data management.
Data Source
AI summary
A fuel control system for controlling the use of primary fuel and alternate fuel in an internal combustion engine without cross-contamination of fuel types. Cross-contamination of fuel types may eliminate the ability to receive certain benefits or financial incentives associated with use of alternate fuel, including but not limited to RINs, credits, and subsidies. In one embodiment, primary and/or alternate fuel are controllably delivered from sources to a flow cell. If blending is desired, both primary and alternate fuels are delivered to the flow cell. The engine is fed with the resulting primary fuel, alternate fuel, or blended mixture of fuel from the flow cell. The flow cell contains a bypass inlet port adapted to receive excess fuel not consumed by the engine in lieu of the excess fuel being returned to the primary and/or alternate fuel sources. In this manner, cross-contamination of the fuel sources can be avoided.