High-property synthetic power-assisted steering oil composition and preparation method thereof

Abstract

The invention discloses a high-property synthetic power-assisted steering oil composition and a preparation method thereof. The high-property synthetic power-assisted steering oil composition is prepared from the following components in percentage by weight: 10 to 15% viscosity-index improver, 0.5 to 1.5% ashless hydraulic-oil compounding agent, 0.05 to 1.0% antiwear agent, 0.05- to 0.5% metal deactivating agent, 0.3 to 0.5% antioxidant, 0.01 to 0.06% anti-foaming agent, 0.006 to 0.012% oil-soluble green and the balance of base oil, wherein the content of hydrogenated polydecene in the base oil is more than or equal to 65%. The high-property synthetic power-assisted steering oil composition provided by the invention has the advantages of ultrahigh viscosity index, excellent low-temperaturefluidity, and good oxidation stability and antiwear property; and the preparation process is simple and convenience is brought for industrial production.

Description

technical field [0001] The invention belongs to the field of lubricating oil, and in particular relates to a high-performance synthetic power steering oil composition and a preparation method thereof. Background technique [0002] The automobile power steering gear is used to convert part of the mechanical energy output by the engine into pressure energy, and provides power assist for the driver during the steering process, so as to reduce his physical exertion during the steering action. At present, the power steering system configured on the car can be roughly divided into three categories: (1) mechanical hydraulic power steering system; (2) electronic hydraulic power steering system; (3) electric power steering system. Among them, the advantage of the hydraulic power steering system is that it can improve the comfort and safety of the vehicle. When the tires are involuntarily turned due to the violent beating of the wheels or encountering potholes on the road, the effect ...

AI Technical Summary

Problems solved by technology

Due to the high low-temperature dynamic viscosity of these oils, the Brookfield viscosity at -40°C is as high as 20,000mPa.s, and the low-temperature fluidity of the oils in winter or in northern regions is poor, resulting in heavy or even difficult steering.

In addition, the power of the steering pump in the power steering system is small. If the low temperature fluidity of the oil is poor, it will lead to high energy consumption, serious pump wear, and affect the service life.

Images