Aromatic Amine Lubricant Advances Spark Timing
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Solution Overview
Problem
Conventional spark-ignition internal combustion engines face challenges in achieving optimal ignition timing, leading to inefficiencies in fuel consumption and engine performance due to the limitations of current ignition systems and additives, which do not effectively advance spark timing without increasing the risk of knocking.
Innovation Solution
Incorporating an aromatic amine, such as aniline or alkyl-substituted aniline compounds, into a lubricating composition to advance spark timing while minimizing knocking, thereby optimizing fuel efficiency and reducing brake specific fuel consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional ignition systems and additives are used, then engine operation is stable, but spark timing cannot be advanced sufficiently without increasing knocking risk
Solution Approach 1:
The patent changes the chemical composition parameter of the lubricating oil by incorporating aromatic amines (aniline, alkyl-substituted anilines, 1,2,3,4-tetrahydroquinoline, diphenylamines, and their derivatives) at concentrations of 3-20 wt%. This chemical parameter change advances the spark timing by 5-15 degrees BTDC, improving fuel efficiency while the aromatic amine structure prevents knocking through its anti-knock properties
Solution Approach 2:
The aromatic amine compounds act as an intermediary substance in the lubricating oil that mediates between the need for advanced spark timing (for fuel efficiency) and the need to prevent knocking. The aromatic amine absorbs the harmful effect of premature combustion, allowing the spark to be timed earlier without causing knocking
2Productivity
If spark timing is advanced to improve fuel efficiency, then brake specific fuel consumption decreases, but the risk of knocking increases
Solution Approach 1:
The patent achieves a dual effect by changing the chemical composition to include aromatic amines: spark timing is advanced by 5-15 degrees BTDC (improving productivity/fuel efficiency) while the aromatic amine's chemical structure maintains reliability by preventing knocking through its anti-knock properties
Data Source
AI summary
The present invention relates to a method for advancing the spark timing of a spark-ignited internal combustion engine, the method comprising lubricating the spark-ignited internal combustion engine with a lubricating composition comprising base oil and an anti- knock additive, wherein the anti-knock additive is an aromatic amine.