METHOD TO DEFROST A CONTROL FLUID IN A TANK OF AN EXHAUST SYSTEM PROVIDED WITH EXHAUST GAS AFTER-TREATMENT IN AN INTERNAL COMBUSTION ENGINE

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Abstract

A method to defrost a control fluid in a tank (10) of an exhaust system (2) provided with exhaust gas aftertreatment in an internal combustion engine (1) comprising a reversible pumping device (11), which is drowned inside the tank (10) and is driven by an electric motor (M), preferably a brushless DC motor (M); the method comprises the steps of detecting the current temperature of the control fluid inside the tank (10); and controlling the electric motor (M) in a non-efficient manner, so as to generate a thermal power due to Joule effect that helps defrost the control fluid close the pumping device (11), in case the current temperature of the control fluid is below a safety value (Vs), which indicates the frosting of the control fluid contained in the tank (10).

Classe Tecnologica

F - Mechanical engineering, lighting, heating, weapons, blasting

Patent Office

European Patent Office

Numero Deposito

EP 3085912

Anno Deposito

2016

Anno Concessione

2016

Inventori Pugliesi

  • De Cesare Matteo

Tutti gli inventori

  • Osbat Giovanni
  • De Cesare Matteo

Titolari pugliesi

  • Non ci sono titolari pugliesi

Tutti i titolari

  • Magneti Marelli S.p.A.