Multipurpose Jet Fuel Composition Freezing Point and Cetane Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Jet fuels used in aircraft and ground vehicles face challenges with freezing points that are not low enough to prevent solidification at operational temperatures, and diesel fuels have cetane numbers that are not suitable for modern engines, limiting their versatility and efficiency.
Innovation Solution
A multipurpose fuel composition is created by blending petroleum-derived jet fuel with a renewable jet fuel component, resulting in a fuel with a freezing point of −40° C. or below and a cetane number of more than 40, enabling its use in both aircraft and ground vehicles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If petroleum derived jet fuel is used, then the fuel can be produced from conventional sources, but the freezing point is not low enough for Jet A-1 grade requirements
Solution Approach 1:
The patent combines petroleum derived jet fuel (Jet A grade) with renewable jet fuel components to create a blended multipurpose fuel. This merging of different fuel sources allows the final composition to achieve Jet A-1 freezing point specifications (−40° C. or below) while maintaining compatibility with both aircraft and ground vehicle engines through appropriate component selection and blending ratios.
Solution Approach 2:
The invention creates a composite fuel composition by blending petroleum-derived hydrocarbons with renewable jet fuel components (such as hydrotreated vegetable oils or Fischer-Tropsch derived fuels). This composite approach allows the fuel to exhibit properties of both components, achieving the required freezing point depression while maintaining cetane number above 40 for diesel engine compatibility.
2Ease of operation
If diesel fuel is used for ground vehicles, then it can power vehicles, but the cetane number is not suitable for modern engines requiring higher ignition quality
Solution Approach 1:
The patent modifies the chemical composition parameters of the fuel blend to achieve a cetane number greater than 40. By selecting renewable jet fuel components with appropriate molecular structures (such as paraffinic structures from hydrotreated vegetable oils or Fischer-Tropsch synthesis), the blend attains high ignition quality suitable for modern diesel engines while maintaining jet fuel performance characteristics.
3Adaptability or versatility
If separate fuels are maintained for aircraft and ground vehicles, then each fuel can be optimized for its specific use, but logistical flexibility is reduced
Solution Approach 1:
The patent creates a truly multipurpose fuel composition that can be used in both aircraft engines and ground vehicle diesel engines. By carefully balancing the blend components to achieve freezing point of −40° C. or below and cetane number greater than 40, the fuel satisfies Jet A-1 specifications for aviation while simultaneously meeting diesel fuel requirements for ground vehicles, eliminating the need for separate fuel storage and distribution systems.
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 blended fuel composition effectively lowers the freezing point and enhances the cetane number, making it suitable for use in both aircraft and ground vehicles, improving logistical flexibility and performance by meeting the freezing point requirements of Jet A-1 grade while utilizing components of Jet A grade.
Implementation Method 1
the freezing point of the multipurpose fuel composition is −40° C. or below
Implementation Method 2
mixing petroleum derived jet fuel component and renewable jet fuel component to obtain a multipurpose fuel composition
Data Source
AI summary
A multipurpose fuel composition is disclosed which contains a petroleum derived jet fuel component and a renewable jet fuel component, wherein the multipurpose fuel composition has a freezing point of −40° C. or below, and an exemplary cetane number more than 40, preferably more than 45, more preferably more than 50.