Shock Absorber Oil Composition for Low-Speed Vibration Damping
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Solution Overview
Problem
The existing shock absorber oil compositions transmit rough vibrations to vehicle bodies during low-speed travel, resulting in insufficient ride quality.
Innovation Solution
A shock absorber oil composition comprising a base oil, a phosphate or amine phosphate salt, an amide compound, and a primary amine, with specific alkyl or alkenyl groups and content ranges to optimize friction coefficients, ensuring smooth movement and efficient vibration absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing shock absorber oil composition is used, then friction characteristics are improved for expressway travel, but rough vibration is transmitted to vehicle body during low speed travel
Solution Approach 1:
The patent applies parameter changes by modifying the chemical composition parameters of the shock absorber oil. Specifically, it introduces component (A) with alkyl or alkenyl groups having 12-20 carbon atoms, component (B) amide compound with 12-20 carbon atoms, and component (C) primary amine with 12-20 carbon atoms, each within specific concentration ranges. This chemical parameter modification enables the oil to provide appropriate friction characteristics at both high speeds (expressway) and low speeds, preventing rough vibration transmission while maintaining reliable friction performance.
2Speed
If shock absorber oil is designed for high speed travel, then friction characteristics are optimized, but ride quality becomes insufficient during low speed travel
Solution Approach 1:
The patent applies universality by designing a multi-functional shock absorber oil composition that performs effectively across different speed conditions. The composition includes component (A) phosphate or amine phosphate salt, component (B) amide compound, and component (C) primary amine, where each component contributes to both high-speed friction characteristics and low-speed vibration damping. This universal formulation ensures reliable ride quality whether the vehicle is traveling at high speeds on expressways or at low speeds in urban environments.
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 composition provides an excellent ride quality by maintaining low friction coefficients at both high and low speeds, enhancing the shock absorber's ability to absorb vibrations and improve ride comfort during travel.
Implementation Method 1
a component (A) that is at least one of phosphate, amine phosphate salt, phosphite and amine phosphite salt
Implementation Method 2
a component (B) that is an amide compound; and a component (C) that is a primary amine
Data Source
AI summary
A shock absorber oil composition of the invention includes a base oil: (A) at least one of phosphate, amine phosphate salt, phosphite and amine phosphite salt; (B) an amide compound; and (C) a primary amine.