Rotating Fuel Injector Assembly for Combustion Optimization
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Solution Overview
Problem
Current fuel injector systems in internal combustion engines face challenges in efficiently distributing fuel to optimize combustion efficiency, flame propagation, and emissions control, particularly in diesel and direct injection gasoline engines.
Innovation Solution
A rotating fuel injector assembly comprising a base, internal, intermediate, and external coaxial tips, with actuators that allow for adjustable fuel stream direction and alignment, enabling both fixed linear and rotating curvilinear injection modes to enhance fuel distribution and emissions optimization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional fuel injector with fixed injection direction is used, then the structure is simple, but the fuel distribution and combustion efficiency are insufficient
Solution Approach 1:
The patent applies the dynamics principle by making the injection tip rotatable around the injection axis. The injection tip can change its orientation dynamically during operation, allowing the fuel injection direction to be adjusted according to different combustion chamber conditions. This dynamic adjustment capability improves fuel distribution and combustion efficiency without requiring a completely complex redesign of the injector structure.
Solution Approach 2:
The injection tip is segmented into a rotatable component that can be independently controlled. By separating the injection tip from the fixed injector body and allowing independent rotation, the system achieves variable injection directions while maintaining a relatively simple overall structure. This segmentation enables the injection direction to be optimized for different operating conditions.
2Loss of substance
If the injection tip is made rotatable to improve fuel distribution, then the fuel consumption is optimized, but the device complexity increases
Solution Approach 1:
The rotatable injection tip allows dynamic adjustment of fuel spray direction to optimize combustion efficiency and reduce fuel consumption. The rotation mechanism is integrated into the existing injector structure, minimizing additional complexity while achieving the fuel savings benefit.
Solution Approach 2:
The rotatable injection tip serves multiple functions: it can adjust injection direction for different combustion chamber geometries, optimize fuel distribution under various operating conditions, and improve combustion efficiency. This multi-functionality justifies the moderate increase in device complexity by providing multiple benefits from a single mechanism.
3Area of stationary object
If multiple coaxial tips with different injection angles are used, then the fuel spray coverage is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent employs a nested structure where multiple coaxial tips are arranged concentrically around the injection axis. The internal tip, intermediate coaxial tip, and external coaxial tip are nested within each other, with each tip having different injection angles. This nested arrangement allows multiple injection directions to be achieved within a compact structure, improving fuel spray coverage while maintaining manufacturing feasibility through standardized concentric fabrication processes.
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 rotating fuel injector assembly improves fuel mass flow rate, combustion efficiency, and reduces NOx, CO2, and soot emissions by providing precise control over fuel distribution and injection angles, optimizing engine performance across various operating conditions.
Implementation Method 1
an incoming fuel flow from a fuel inlet of the base may be configured to generate an internal fluid pressure to rotate the intermediate and external coaxial tips about an injection axis
Implementation Method 2
The internal tip may be configured to move between an extended closed position and a retracted open position relative to the base
Implementation Method 3
The rotating fuel injector assembly improves fuel mass flow rate, combustion efficiency, and reduces NOx, CO2, and soot emissions by providing precise control over fuel distribution and injection angles
Data Source
AI summary
A rotating fuel injector assembly for a vehicle engine includes a base, an internal tip, an intermediate coaxial tip, and an external coaxial tip. The internal tip may be configured to move between an extended closed position and a retracted open position relative to the base. The intermediate coaxial tip may include an opening defined in a base of the intermediate coaxial tip. The base and the opening abuts the internal tip when the internal tip is in the extended closed position. The external coaxial tip may move between an extended open position and a retracted closed position relative to the base. The external coaxial tip includes a plurality of apertures which may align with the at least one opening in the intermediate coaxial tip at a predetermined event.