Post-processing hose for engine exhaust gas

Abstract

The invention relates to a rubber hose, in particular to a composite hose for post-processing automobile engine exhaust gas. The invention provides a post-processing hose for engine exhaust gas, which resists high temperature, high pressure and corrosion. The post-processing hose is formed by overlapping an inner glue layer, a skeleton layer and an outer glue layer; the inner glue layer is made of G type fluorous rubber, the skeleton layer is made of silica gel rolling aramid fiber cloth, and the outer glue layer is made of silicon rubber; the inner glue layer is prepared from the following raw materials in parts by mass:100 parts of G type fluorous rubber, 10-30 parts of reinforce filler, and 1-6 parts of peroxide vulcanizing agent; the skeleton layer is produced from aramid fiber cloth with high-breaking strength and low-hardness silica gel containing binding material component through friction calendering; and the outer glue layer is prepared from the following raw materials in parts by mass: 100 parts of silicon rubber, 30-60 parts of reinforce filler, 5-10 parts of structure control agent, 1-5 parts of heat resisting additive, and 1-3 parts of peroxide vulcanizing agent.

Description

technical field [0001] The invention relates to a rubber hose, in particular to a composite hose (including an exhaust gas recirculation system hose and a turbocharger rubber hose) used for exhaust aftertreatment of an automobile engine. Background technique [0002] To reduce particulate matter (PM) and nitrogen oxides (NOx) in motor vehicle exhaust X ) emissions and improve air quality. From January 1, 2007, Beijing began to implement the National IV emission standard (equivalent to Euro IV) for diesel vehicles. As the core of meeting the National IV emission standard - the engine, it is now generally recognized that it is relatively mature, and the technology that can realize the diesel engine Euro IV emission - there are three technical routes for exhaust after-treatment: EGR+POC (exhaust gas recirculation + particulate catalytic oxidizer ), EGR+DPF (Exhaust Gas Recirculation + Particulate Filter) and SCR (Selective Catalytic Reduction). [0003] Exhaust gas recirculat...

AI Technical Summary

Problems solved by technology

[0009] (3) Stronger corrosion

China FAW Group Corporation's patent No. ZL200620028879.1 proposes a turbocharger hose with an inner layer of fluorine rubber, a middle layer of reinforced braid, and an outer layer of silica gel, but this patent can only be used in The hose will not burst under the condition of 200℃ and 0.4MPa

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