METHOD FOR DETECTING A DEGEL OF A REDUCING AGENT

摘要

The invention relates to a method for detecting (P) a thawing of a reducing agent contained inside a tank fitted to a motor vehicle, the detection method (P) comprising a pressurization step ( 106) of an injection line, the pressurizing step (106) comprising a step of delivering the reducing agent into an exhaust line via an injector. The detection method (P) comprises a step of detecting a thawing requirement (101) comprising a determination of a frost risk zone which is an area where indifferently an outside temperature is lower than a phase change temperature solid-liquid of the reducing agent and an agent temperature is lower than the solid-liquid phase change temperature of the reducing agent.