Polyalkylene Glycol Lubricant Fuel Efficiency
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Solution Overview
Problem
Existing lubricant compositions do not adequately address the need for improved fuel efficiency in vehicles, despite market and regulatory pressures.
Innovation Solution
A lubricant composition featuring a polyalkylene glycol base oil component in amounts ranging from 60 to 98 parts by weight, with specific kinematic viscosity and viscosity index ranges, is developed to enhance fuel efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional lubricant compositions are used, then basic lubrication function is maintained, but fuel efficiency of vehicles is not improved
Solution Approach 1:
The patent changes the chemical composition parameters by using polyalkylene glycol base oils with specific molecular structures and viscosity characteristics. The base oil comprises polyalkylene glycols with average molecular weights and viscosity ranges optimized to reduce friction and improve fuel efficiency while maintaining reliable lubrication performance through controlled viscosity at operating temperatures.
Solution Approach 2:
The patent creates a composite lubricant formulation by combining polyalkylene glycol base oils with specific additive packages. This composite approach integrates multiple functional components that work synergistically to reduce energy consumption through lower friction while ensuring reliable lubrication through comprehensive protection against wear, oxidation, and other degradation mechanisms.
2Use of energy by moving object
If polyalkylene glycol base oil is used in high amounts, then fuel efficiency is improved, but viscosity stability across temperature range becomes challenging
Solution Approach 1:
The patent carefully selects and controls the viscosity parameters of polyalkylene glycol base oils to achieve optimal performance. By specifying base oils with kinematic viscosity at 40°C between 20-700 cSt and at 100°C between 2-50 cSt, the formulation maintains appropriate viscosity stability across the operating temperature range while enabling improved fuel efficiency through reduced internal friction.
Solution Approach 2:
The patent applies different viscosity characteristics to different operating conditions by selecting polyalkylene glycols with specific viscosity-temperature behavior. The base oil composition is tailored to provide higher viscosity at lower temperatures for adequate lubrication film formation, while maintaining lower viscosity at operating temperatures to reduce friction and improve fuel efficiency.
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 lubricant composition demonstrates improved fuel efficiency, as evidenced by traction coefficient measurements and fuel economy tests, while maintaining good shear stability and oxidation resistance.
Implementation Method 1
The lubricant composition includes a polyalkylene glycol base oil component in an amount of at least about 60 parts by weight based on 100 parts by weight of the lubricant composition
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
A lubricant composition includes a polyalkylene glycol base oil component in an amount of at least about 60 parts by weight based on 100 parts by weight of the lubricant composition. The lubricant composition has a kinematic viscosity at 100°C of from about 4 to about 50 cSt and a kinematic viscosity at 40°C of from about 20 to about 700 cSt, each measured in accordance with ASTM D445.