Integrated Fuel Injector Igniter for Alternative Fuels
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Solution Overview
Problem
Current internal combustion engines face challenges in efficiently utilizing alternative fuels like hydrogen, methane, and other gaseous fuels due to issues such as engine degradation, pollution, and inefficient energy conversion, primarily because of the difficulty in delivering and igniting these fuels effectively within the constraints of existing engine designs.
Innovation Solution
The development of integrated fuel injectors and igniters that can adaptively inject and ignite various fuels by using dielectric materials for high-energy ignition, precise fuel delivery, and adaptive timing to optimize combustion, allowing for the use of lower-cost, cleaner-burning fuels like hydrogen and methane in both spark-ignited and compression-ignited engines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional fuel injection and ignition systems are used, then engine design is simple and reliable, but alternative fuels like hydrogen and methane cannot be efficiently utilized due to delivery and ignition difficulties
Solution Approach 1:
The patent combines the fuel injector and igniter into a single integrated assembly, where the injector delivers fuel and the igniter provides ignition in close proximity. This merging allows the system to handle multiple fuel types (hydrogen, methane, gasoline, diesel) with a single device rather than requiring separate systems for each fuel type, thereby improving fuel compatibility while managing system complexity.
Solution Approach 2:
The integrated injector-igniter assembly is designed to universally accommodate multiple fuel types through adjustable injection parameters and ignition timing. The system can be configured for spark-ignited engines (using hydrogen, methane, gasoline) or compression-ignited engines (using diesel, biodiesel), making it a multi-functional device that improves adaptability across different fuel sources.
2Productivity
If precise fuel injection and ignition are implemented, then energy conversion efficiency improves, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The integrated assembly is segmented into distinct functional components (injector portion with nozzle, igniter portion with electrodes or glow plug, housing, and mounting features) that can be manufactured separately using standard processes and then assembled. This segmentation allows each component to be optimized for its specific function while simplifying manufacturing compared to creating a fully integrated monolithic structure.
Solution Approach 2:
The system achieves precise energy conversion by allowing parameter adjustments in fuel injection timing, duration, and quantity, as well as ignition timing and energy level. These parameter changes enable optimization for different fuel types and engine conditions without requiring complex hardware modifications, thereby improving productivity while managing manufacturing complexity.
3Manufacturing precision
If integrated injector-igniter assembly is used, then fuel delivery precision and ignition timing are improved, but the complexity of the system increases
Solution Approach 1:
By merging the injector and igniter into a single integrated assembly with fixed spatial relationships between components, the system achieves precise fuel delivery and ignition timing without requiring complex external coordination mechanisms. The integration ensures that fuel and ignition occur at the optimal location and time, improving manufacturing precision while the modular design keeps assembly complexity manageable.
4Object-generated harmful factors
If alternative fuels like hydrogen and methane are used, then emissions are reduced and fuel cost decreases, but engine degradation and inefficient energy conversion occur
Solution Approach 1:
The system optimizes engine durability when using alternative fuels by precisely controlling injection parameters (quantity, timing, duration) and ignition parameters (timing, energy level) to ensure complete combustion. This prevents incomplete combustion products that could cause engine degradation, while maintaining the emission reduction benefits of alternative fuels like hydrogen and methane.
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
This solution enables efficient energy production with reduced emissions and extended engine life by ensuring precise fuel injection and ignition, overcoming the limitations of traditional engines in handling alternative fuels, and improving fuel economy and thermal efficiency.
Implementation Method 1
using dielectric materials for high-energy ignition
Implementation Method 2
precise fuel delivery
Implementation Method 3
high-energy ignition
Implementation Method 4
optimize combustion
Data Source
AI summary
The present disclosure is directed to integrated injector/igniters providing efficient injection, ignition, and complete combustion of various types of fuels. One example of such an injectors/igniter can include a body having a base portion opposite a nozzle portion, and a fuel passageway extending from the base portion to the nozzle portion. A force generator and a first valve are carried by the base portion. The first valve is movable in response to actuation from the force generator to move between closed and open positions. The injector/igniter also includes a second valve at the nozzle portion that is deformable in response to pressure in the fuel passageway to deform between a closed position and an open position.