SUPPLY PRESSURE CONTROL DEVICE FOR FUEL PUMP FOR INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To provide a simple and reliable device for controlling the supply pressure of a pump. SOLUTION: This device comprises a supply pipe 34 communicated with a pump 16, a drain pipe, a solenoid valve 32 provided with an electromagnet which can be energized to control an armature fo...

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Bibliographische Detailangaben
Hauptverfasser:	PACUCCI NICOLA, DE MATTHAEIS SISTO LUIGI
Format:	Patent
Sprache:	eng
Schlagworte:	ACTUATING-FLOATS BLASTING COCKS COMBUSTION ENGINES DEVICES FOR VENTING OR AERATING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TAPS THERMAL INSULATION IN GENERAL VALVES WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a simple and reliable device for controlling the supply pressure of a pump. SOLUTION: This device comprises a supply pipe 34 communicated with a pump 16, a drain pipe, a solenoid valve 32 provided with an electromagnet which can be energized to control an armature for controlling a shutter and a damping means for damping disturbance in supply pressure in the pump 16 when the electromagnet is energized. The damping means has a chamber having a predetermined capacity and disposed between the supply pipe 34 and the drain pipe and a fixed shield having an opening where a small-diameter portion of a stem of the armature is slid inside. The electromagnet is controlled by an electronic unit, via a modulator for modulating the duty cycle of a control pulse and via a circuit for selecting the frequency of the control pulse following the prediction of water pressure disturbance in accordance with at least one operation parameter.