Gasoline Fuel Composition Using Polybutene to Shorten Burn Duration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing spark ignition internal combustion engines face challenges in improving power output, acceleration, and reducing emissions, particularly when using standard exchange gasoline fuel, with existing fuel formulations not effectively addressing burn duration and efficiency.
Innovation Solution
Incorporating a low molecular weight, high reactivity polybutene polymer, such as polyisobutylene, into gasoline fuel at specific concentrations (500 ppm to 5000 ppm) with a molecular weight range of 200 to 10,000 g/mol and having greater than 30% terminal vinylidene groups, to enhance power output and reduce burn duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If standard exchange gasoline fuel is used, then fuel cost is reduced and ease of operation is improved, but engine power output and acceleration are insufficient
Solution Approach 1:
The patent changes the chemical parameters of the fuel by adding polybutene polymer at specific concentrations (500-5000 ppm) with controlled molecular weight (200-10,000 g/mol) and terminal vinylidene group content (>30%). This modifies the fuel's combustion characteristics to achieve higher power output while still using standard exchange gasoline as the base fuel, thus maintaining fuel availability.
2Productivity
If burn duration is reduced, then engine efficiency is improved and emissions are reduced, but power output may be affected
Solution Approach 1:
The patent optimizes the polybutene polymer parameters (molecular weight 200-10,000 g/mol, terminal vinylidene group content >30%, concentration 500-5000 ppm) to achieve a balanced combustion profile. This allows reduced burn duration for improved efficiency and emissions while maintaining or enhancing power output through increased peak combustion pressure.
3Power
If polybutene polymer is added to improve power output, then engine power and acceleration are enhanced, but fuel composition complexity increases
Solution Approach 1:
The patent creates a composite fuel formulation by combining standard exchange gasoline with polybutene polymer additive. This composite approach leverages the properties of both components: the base gasoline provides stability and availability, while the polybutene polymer enhances combustion characteristics to improve power output and acceleration.
Solution Approach 2:
The patent specifies precise parameter ranges for the polybutene polymer (molecular weight 200-10,000 g/mol, terminal vinylidene group content >30%, concentration 500-5000 ppm) to standardize the additive and simplify formulation processes, reducing complexity while maintaining performance benefits.
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 fuel composition achieves improved power output (increased Pmax) and acceleration, along with reduced burn duration, leading to enhanced engine efficiency and lower harmful emissions.
Implementation Method 1
The present invention relates to a liquid fuel composition, in particular to a liquid fuel composition which provides improved engine power and which has a reduced burn duration in an internal combustion engine
Data Source
AI summary
Fuel composition comprising: (a) a gasoline base fuel suitable for use in a spark ignition internal combustion engine; and (b) a poly butene polymer: wherein the polybutene polymer has a molecular weight in the range from 200 to 10.000 g/mol, wherein greater than 30% of the polymer molecules in the polybutene polymer have a terminal vinylidene group and wherein the polybutene polymer is present at a level from 500 ppm to 5000 ppm, by weight of the fuel composition. The fuel compositions of the present invention provide improved engine power and reduced burn duration.