Bismuth Boron Oil Additive Stability
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Solution Overview
Problem
Existing oil additives, particularly those containing bismuth, suffer from instability, leading to separation, coagulation, or precipitation over time, rendering them unsuitable for extended service and shelf life, and fail to provide consistent lubrication and corrosion protection across varying temperatures.
Innovation Solution
A bismuth-containing premix combined with a boron-containing premix, along with additional components like anionic surfactants, shear stable polymers, and carboxylic acids, is used to create a stable oil additive that enhances lubrication, prevents separation, and improves engine performance by maintaining viscosity and reducing corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bismuth is added to lubricating oil to improve lubricating properties, then lubrication performance is improved, but the additive becomes unstable and salts out over short periods
Solution Approach 1:
The patent combines bismuth with boron to create a composite additive system where bismuth provides lubricating properties and boron compounds (boric acid, borates) provide stability and corrosion protection. This composite approach allows the bismuth to maintain its lubricating effectiveness while the boron components prevent the additive from salting out, resolving the contradiction between lubrication performance and stability.
Solution Approach 2:
The boron-containing compounds act as intermediary substances that mediate between the bismuth additive and the oil environment. These intermediaries stabilize the bismuth carrying compounds, preventing their decomposition and salting out, thereby enabling the bismuth to function effectively as a lubricant without compromising additive stability.
2Temperature
If viscosity stabilizers are added to maintain desired viscosity at operating temperature, then high-temperature viscosity is improved, but the oil has high viscosity at start-up causing improper lubrication
Solution Approach 1:
The patent utilizes the temperature-dependent properties of bismuth-containing additives, which remain relatively stable across the operating temperature range. The bismuth-boron composite system maintains appropriate viscosity characteristics at both start-up and operating temperatures, avoiding the extreme viscosity changes caused by conventional viscosity modifiers while providing consistent lubrication protection.
3Strength
If sulfur and chlorine compounds are added to increase film strength, then film strength is improved, but water reacts with these compounds to produce acidic components causing corrosion
Solution Approach 1:
The patent converts the potentially harmful interaction between water and additives into a beneficial system by using boron compounds that react with water to form stable, non-corrosive borates. This transforms the harmful acid-generation pathway into a beneficial corrosion-protection mechanism, where the boron components neutralize acidic byproducts and provide film strength without generating corrosive substances.
Solution Approach 2:
The boron-containing compounds serve as intermediary substances that intercept and neutralize acidic components before they can cause corrosion. These intermediaries react with the acidic byproducts of water decomposition to form stable borate complexes, thereby protecting the lubricated surfaces from corrosion while maintaining film strength.
4Object-affected harmful factors
If caustic materials are added to counteract corrosive effects of acidic components, then corrosion protection is improved, but caustic materials produce a corrosive atmosphere
Solution Approach 1:
Instead of using caustic materials that neutralize acids but create corrosive atmospheres, the patent inverts the approach by using boron compounds that naturally form stable, non-corrosive borates when reacting with water. This inverted chemistry provides corrosion protection through a different mechanism that eliminates the corrosive atmosphere problem inherent in caustic-based 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 additive provides improved engine performance, increased horsepower and torque, reduced engine temperature, and extended service life by maintaining stability and film strength, while reducing wear and emissions, and is self-stable over months.
Implementation Method 1
The oil additive is a homogeneous liquid comprising, in general, the combination of a bismuth-containing premix (BiP) and a boron-containing premix (BP) in a refined oil
Implementation Method 2
a boron-containing premix comprising boric acid, a boron carrier, and an anionic surfactant
Implementation Method 3
Lubricating oils are frequently subjected to extreme temperatures in service which can range from about −50° F. to 400° F. In order to provide the oil with a desired viscosity at the normal running temperature
Implementation Method 4
bismuth provides excellent lubricating properties
Implementation Method 5
water or moisture resulting from condensation can accumulate in the oil and react with the sulfur or chlorine compounds to produce acidic components, which can cause corrosion of the lubricated parts
Data Source
AI summary
Disclosed herein is an oil additive and combination oil product comprising an effective amount of the oil additive. The oil additive comprises a bismuth-containing premix, the bismuth-containing premix comprising bismuth trioxide and a carrier, and a boron-containing premix, the boron-containing premix comprising boric acid, a carrier, and an anionic surfactant.