A kind of light-duty diesel oil/gasoline car engine lubricating oil composition

Abstract

The invention discloses an engine lubricating oil composition. The engine lubricating oil composition has quality satisfying ACEA-2010A3 / B4 and SAEJ300 specification requirements, is suitable for lubricating a light-duty diesel oil / gasoline car engine under harsh conditions and is especially suitable for lubricating a direct injection light-duty diesel oil / gasoline engine having turbocharging. The engine lubricating oil composition has excellent oxidation and wear resistance, middle / low temperature dispersibility and high temperature detergency, a high base number and strong alkali maintenance capability, can effectively inhibit high-temperature piston deposit generation, can prevent piston adhesion to a ring, has a long oil change period and can provide full lubricating protection on the engine. The engine lubricating oil composition comprises at least two metal detergents, two ashless dispersants, three antioxidant, anticorrosive and antiwear agents, a viscosity index improver, a pour point depressant, an anti-foaming agent and two base oil.

Description

(1) Technical field [0001] The invention belongs to the technical field of lubricating oil, and in particular relates to a lubricating oil composition which can meet the requirements of lubricating light-load diesel / gasoline car engines under harsh working conditions, and is especially suitable for lubricating oil compositions with turbocharged direct-injection light-load diesel engines. It should have excellent anti-oxidation and anti-wear properties, medium and low temperature dispersibility and high temperature detergency, as well as high alkali number and good alkali retention capacity. The present invention belongs to the class of hydrogenated lubricating compositions. (2) Background technology [0002] With the depletion of limited oil resources, the seriousness of environmental pollution and the upgrading of emission regulations, light-duty diesel cars with good fuel economy, power, and low CO 2 Emissions and other advantages have been more and more valued and favore...

AI Technical Summary

Problems solved by technology

The lubricating oil composition involved in the present invention has the above performance requirements for lubricating oils for light-duty diesel / gasoline car engines, while ordinary commercially available gasoline car engine oils do not have outstanding performance in terms of high-temperature detergency, and the base number does not meet light-duty diesel oil. High Base Number Performance Requirements for Car Engines

Ordinary heavy-duty diesel engine oils are not outstanding in low-temperature sludge dispersibility, anti-oxidation and anti-wear properties.

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