Engine exhaust gas additive storage system

Abstract

System for storing an internal combustion engine exhaust gas liquid additive, the said system comprising a tank for storing the additive and an 'immersed' baseplate positioned through an opening made in the bottom wall of the tank, the said baseplate comprising at least one orifice through which a system for injecting the said additive into the exhaust gases can be fed, and also incorporating at least one other active component of the storage system and / or of the injection system.

Description

technical field [0001] The present application relates to an engine exhaust additive storage system. Background technique [0002] Legislation on emissions from vehicles and heavy goods vehicles provides, inter alia, to reduce emissions of nitrogen oxides (NO) in the atmosphere x amount. One known way to achieve this is to use SCR (Selective Catalytic Reduction), which reduces nitrogen oxides by injecting a reducing agent (usually ammonia) into the exhaust system. This ammonia may originate from the thermal decomposition of an ammonia precursor solution, which may be at a eutectic concentration. An ammonia precursor like this is usually a urea solution. [0003] High levels of NO produced by the engine during combustion with optimum efficiency using the SCR method x They are processed in a catalytic converter as they leave the engine. This treatment requires the use of reducing agents in a precise concentration and extreme quality. Therefore, the solution is precisely ...

AI Technical Summary

Problems solved by technology

[0009] However, the fact that this substrate is located on the top wall of the tank has a number of disadvantages:

[0014] - In the event of solidification, some components may be damaged as solid additive clumps floating on the surface may hit said components as they move back and forth

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