Robert Boschgmbh

Pietro De Carlo

Nello Medoro

Antonio Scamarcio

A pumping unit for feeding fuel, preferably diesel fuel, to an internal combustion engine has a pre-feed pump (), which feeds the fuel to a high-pressure pump (), is connected to a fuel storage chamber by means of an intake duct () and is provided with two gearings () engaging with each other and made to rotate by an electric motor (), a stator () of which is housed inside a containing chamber () formed in a pump body () of the pre-feed pump () and hydraulically connected to the intake duct ().

Pumping unit for feeding fuel, preferably diesel fuel, to an internal combustion engine

Unclogging group for unclogging a filter of a pumping group for pumping diesel to an internal combustion engine, the unclogging group comprising: &#x2014;a metering unit comprising an electromagnetic head and a control valve for controlling the diesel flow; &#x2014;a filter associated with the control valve made at least in part of metallic material; &#x2014;a temperature sensor for measuring the ambient temperature; &#x2014;a control unit coupled to the temperature sensor; &#x2014;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 starling of the pumping group of a period wherein the control unit supplies electrical current to the electrical circuit connected to the filter.

Group and method for unclogging a filter of a pumping group for pumping diesel to an internal combustion engine

Unclogging group for unclogging a filter of a pumping group for pumping diesel to an internal combustion engine, the unclogging group () comprising: &#x2014;a metering unit () supplied by diesel leaving a low pressure pump and configured for feeding in a controlled manner the diesel to a high pressure pump; the metering unit () comprising an electromagnetic head () provided with a coil () and a control valve () for controlling the diesel flow; &#x2014;a filter () associated with the control valve (); &#x2014;a temperature sensor () for measuring the ambient temperature; &#x2014;a control unit () coupled at one side to the temperature sensor () and at another side to the coil (); wherein the control unit () is configured so that once it has 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 coil ().

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Bitritto, Italy

Pietro De Carlo