Gasoline Combustion Improver for Compression Ignition
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Solution Overview
Problem
Existing gasoline products often have high ignition points, making them unsuitable for use in compression-ignition internal combustion engines, and current methods to reduce octane numbers are costly and inefficient.
Innovation Solution
A combustion improver is added to gasoline to reduce its ignition point, allowing it to be ignited through compression, with specific compounds like ammonium nitrate and nitrobenzene being used to achieve a homogeneous nitrogen-oxygen equivalent, enabling the gasoline to be used in compression-ignition engines with reduced octane numbers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If gasoline is used in compression-ignition engines, then thermal conversion efficiency is improved, but high ignition point prevents ignition through compression
Solution Approach 1:
The patent changes the chemical composition parameters of gasoline by adding combustion improvers (nitrogen-containing compounds like ammonium nitrate, urea, or organic nitrates) to modify the ignition characteristics. This allows the fuel to achieve the low ignition point required for compression-ignition engines while maintaining its base gasoline composition for compatibility with existing infrastructure.
2Temperature
If combustion improver is added to reduce octane number, then compression ignition is enabled, but nitrogen oxide content in exhaust increases
Solution Approach 1:
The patent carefully controls the concentration and chemical type of nitrogen-containing combustion improvers to achieve the desired ignition point reduction while managing nitrogen oxide emissions. By optimizing the dosage and selecting specific compounds, the system balances ignition performance with emission control requirements.
Solution Approach 2:
The combustion improver acts as an intermediary substance that facilitates compression ignition while its nitrogen content can be managed through catalyst design. The patent integrates these compounds into the fuel formulation to enable the transition from spark-ignition to compression-ignition mode.
3Temperature
If existing methods are used to reduce octane number, then compression ignition is enabled, but manufacturing cost increases
Solution Approach 1:
The patent modifies the chemical parameters of gasoline by adding relatively inexpensive nitrogen-containing combustion improvers rather than using costly reforming processes or blending with expensive low-octane components. This approach achieves octane number reduction at lower manufacturing cost.
Solution Approach 2:
The patent uses affordable chemical additives (combustion improvers) that can be easily mixed into gasoline to achieve the desired ignition characteristics, replacing more expensive conventional methods for producing low-octane fuel suitable for compression-ignition engines.
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 solution results in a 30% higher thermal conversion efficiency in compression ignition engines, provides a cost-effective method for converting unsuitable gasoline, and reduces emissions by stabilizing nitrogen oxide content, facilitating exhaust gas treatment.
Implementation Method 1
adding the combustion improver to the gasoline to reduce an ignition point and an octane number of the gasoline, so that the gasoline can be ignited through compression
Data Source
AI summary
Provided is a gasoline product containing a combustion improver, and a method for preparing the gasoline product. The combustion improver is added to gasoline to reduce an octane number and thus an ignition point of the gasoline, so that the gasoline product can be used in a compression ignition internal combustion engine. The combustion improver-containing gasoline product is a low-octane number gasoline, and is capable of being ignited through compression by an internal combustion engine having a compression ratio in the range from 12 to 22.