Lubricating oil for natural gas and gasoline dual purpose fuel engine

Abstract

A lubricating oil for the convertible fuel motor of the natural gas and the petrol is made up of the paraffin neutral oil 58%-80%, the residual oil 9%-20%, the ethylene-propylene copolymer 2%-6%, the poly a olefin adjusted by the hydrogen 0.6%-1.0%, the methyl silicone oil 0.0005-0.001%, the calcium alkylbenzenesulfonate with the low base number 0.5%-1.5%, the calcium alkylbenzenesulfonate with the high base number 1.0%-2.0%, the single allyl succinyl imine 1.5%-3.0%, the double allyl succinyl imine 1.5%-3.0%, the sulfur phosphorus secondary alcohol zinc salt 0.8%-2.8%, the dialkyl phosphorodithioic acid molybdenum 0.2%-0.7%, the alkyl diphenylamine 0.2%-0.7%, the high molecular phenol with the ester 0.2%-0.7%, the triazol 0.2%-0.7%.The product can meet the need of the convertible fuel motor after the small and the pilot plant.

Description

technical field [0001] The invention belongs to the technical field of improving specific physical properties or chemical properties with additives characterizing lubricating oil compositions, such as multifunctional additives. Background technique [0002] As people's awareness of energy saving and environmental protection gradually increases, countries have stricter air quality control and vehicle emission requirements. As one of the effective means to solve the problem of vehicle emission pollution, gas vehicles have a very bright development prospect. The world's major automobile manufacturing companies are stepping up the development and research of gas fuel (compressed natural gas or LPG) engines, dual fuel (natural gas and diesel or LPG / diesel) engines and dual fuel (natural gas and gasoline or LPG / gasoline) engines. The natural gas and gasoline dual-purpose fuel engine vehicle is to install a natural gas-type vehicle compressed natural gas supply device under the con...

AI Technical Summary

Problems solved by technology

[0003] At present, the price of engine lubricating oil for natural gas on the market is higher than that of ordinary gasoline engine oil. It is difficult to promote the use of natural gas engine lubricating oil to natural gas and gasoline dual-fuel vehicles. The engine lubricating oil used in such vehicles is still gasoline engine lubricating oil , because natural gas and gasoline dual-purpose fuel engines use natural gas, the temperature of the combustion chamber is high, the temperature of the exhaust gas is high, the gasoline engine lubricating oil is easily oxidized and nitrated, and sludge is formed, which makes the back of the engine's intake valve, combustion chamber, and piston rings The increase of carbon deposits in other components affects the normal operation of the engine. There is a lot of sludge on the valve cover, oil pan and other components. The lubricating oil must be changed from 9000km to 5000km. Severe corrosion of components such as pistons and cylinder walls will cause early wear and tear, and the engine overhaul mileage will be shortened by about 1 / 3

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