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1. (WO2018104168) GROUP AND METHOD FOR UNCLOGGING A FILTER OF A PUMPING GROUP FOR PUMPING DIESEL TO AN INTERNAL COMBUSTION ENGINE

Pub. No.:    WO/2018/104168    International Application No.:    PCT/EP2017/081164
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Sat Dec 02 00:59:59 CET 2017
IPC: F02D 41/06
F02D 41/38
F02M 37/22
F02M 59/34
F02M 31/125
Applicants: ROBERT BOSCH GMBH
Inventors: DE CARLO, Pietro
MEDORO, Nello
Title: GROUP AND METHOD FOR UNCLOGGING A FILTER OF A PUMPING GROUP FOR PUMPING DIESEL TO AN INTERNAL COMBUSTION ENGINE
Abstract:
Unclogging group for unclogging a filter of a pumping group for pumping diesel to an internal combustion engine, the unclogging group comprising: - a metering unit comprising an electromagnetic head and a control valve for controlling the diesel flow; - a filter associated with the control valve made at least in part of metallic material; - a temperature sensor for measuring the ambient temperature; - a control unit coupled to the temperature sensor; - an electrical circuit controlled by the control unit for supplying electrical current to the filter; wherein the control unit is configured so once received the starting input of the pumping group it compares the temperature measured by the temperature sensor with a threshold value, and if the temperature measured by the temperature sensor is less than the threshold value the control unit commands a delay of the starting of the pumping group of a period wherein the control unit supplies electrical current to the electrical circuit connected to the filter.