Anti-wear energy-saving type diesel engine oil composition

Abstract

The invention discloses an anti-wear energy-saving type diesel engine oil composition. The anti-wear energy-saving type diesel engine oil composition is prepared from the following raw materials in percentage by weight: 75 to 85 percent of base oil, 9.0 to 12.0 percent of engine oil complexing agent, 1.0 to 3.0 percent of dispersing agent, 0.1 to 0.5 percent of friction modifier, 0.05 to 1.5 percent of anti-wear agent, 0.2 to 0.5 percent of antioxidant, 4 to 10 percent of viscosity index improver and 0.05 to 0.5 percent of pour point depressant; the kinematic viscosity of the obtained diesel engine oil composition at the temperature of 100DEG C is 11.5 to 16.3mm<2> / s. According to the anti-wear energy-saving type diesel engine oil composition disclosed by the invention, the fuel economy of a vehicle with a diesel engine under different working conditions can be remarkably improved, and the service life of the engine can be prolonged; in addition, the anti-wear energy-saving type diesel engine oil composition has excellent piston cleanliness and energy-saving retentivity within a whole oil change period.

Description

technical field [0001] The invention relates to an anti-wear and energy-saving diesel engine oil composition, in particular to an energy-saving lubricating oil composition for commercial vehicles, and belongs to the technical field of lubricating oil. Background technique [0002] With the country's increasing emphasis on environmental issues, the gradual introduction of energy-saving and environmental protection regulations, the full implementation of the National IV emission standards, the formulation of fuel consumption limit standards for commercial vehicles, and the high-end commercial vehicles have become an objective law of economic development. At the same time, with the rapid growth of the heavy-duty truck and bus market, energy-saving and long-drain engine oils that meet the needs of heavy-duty trucks and buses will become the mainstream of the diesel engine oil market in the future. [0003] Prior to this, my country has not formulated a limit value standard for t...

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Problems solved by technology

[0005] CN101481638A proposes an energy-saving and emission-reducing heavy-duty truck special nano-anti-wear lubricating oil and its production method. This patent is mainly aimed at heavy-duty diesel engines, and the viscosity of the oil is high. In the lubricated state, it will increase fuel consumption instead, and does not have a comprehensive energy-saving effect

CN103160364A also proposes an energy-saving and anti-friction diesel engine oil, which only reduces the friction coefficient by adding some anti-friction additives to achieve energy saving, without considering the problem of fuel economy decline or even fuel consumption increase caused by oil aging, and There is also a lack of consideration for the durability of the engine

In addition, CN1091152A, CN10351576A, CN103497815A and CN103923728A all describe the preparation method of energy-saving lubricating oil. Molybdenum salts only generate friction-reducing substances after chemical reactions at high temperatures, and then adsorb on the metal surface, thereby producing friction-reducing effects. The reaction of the produced peroxide will lead to a gradual decrease in the effective molybdenum content, an increase in frictional resistance, and an increase in fuel consumption; and the energy saving effect will only be achieved when the heavy-duty vehicle is at low load and low speed

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