Low-viscosity energy-saving engine oil composition with low-speed preignition control performance

Abstract

The invention relates to a low-viscosity energy-saving engine oil composition with low-speed preignition control performance. The low-viscosity energy-saving engine oil composition comprises the following components: 2.5-4% of a detergent, 1.5-5.5% of a dispersing agent, 0.5-2% of an antioxidant, 1-2% of a pour point depressant, 0.3-1.0% of a friction reducing agent, 0.1-0.5% of a viscosity index agent and 0.1-0.8% of an antioxidant complexing agent, with the balance being neutral base oil. The low-viscosity energy-saving engine oil with low-speed preignition control performance is prepared from the oil-soluble detergent, the dispersing agent, the antioxidant, the pour point depressant, the friction reducing agent and the neutral base oil according to a specific ratio; and due to the reasonable addition amount and proper proportion selection, the problems that the low-viscosity energy-saving oil product has a low-speed preignition phenomenon due to usage of a magnesium-salt-free pure calcium salt formula; and in addition, the problem of metal corrosion caused by a metal antifriction agent is also solved.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil, and in particular relates to an engine oil composition with low viscosity, energy saving and low speed pre-ignition control performance. Background technique [0002] In recent years, as the automotive industry’s environmental protection laws and regulations have become more stringent, low-viscosity energy-saving oil products need to be developed urgently. While meeting energy-saving requirements, they must also have good cleaning and dispersing properties, anti-wear properties, anti-oxidation, and sediment control capabilities. In particular, the control of low-speed pre-ignition performance has become one of the concerns of the original manufacturer's safety elements. [0003] In the technical solutions of low-viscosity, energy-saving and low-speed pre-ignition control engine oils disclosed in the prior art, molybdenum-containing friction reducers are mostly used to achieve energy-savin...

AI Technical Summary

Problems solved by technology

[0003] In the technical solutions of low-viscosity, energy-saving and low-speed pre-ignition control engine oils disclosed in the prior art, molybdenum-containing friction reducers are mostly used to achieve energy-saving effects. According to the prior art, molybdenum-containing friction reducers will corrode metals. However, engine oils with low viscosity, energy saving and low-speed pre-ignition control performance have very high requirements for friction reduction, and the performance of friction reducers is also related to the overall formula of the oil. Directly add molybdenum friction reducers Replacement often does not guarantee wear reduction performance

[0004] In the technical scheme of the engine oil disclosed in the prior art, which has both energy saving viscosity and low-speed pre-ignition control performance, the detergent compounded with calcium salt and magnesium salt is mostly used to achieve the effect of controlling low-speed pre-ignition, but it is currently difficult to achieve the effect of pure calcium salt system.

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