INTERNAL COMBUSTION ENGINE WITH AN ELECTRONICALLY

专利名称：INTERNAL COMBUSTION ENGINE WITH AN

ELECTRONICALLY CONTROLLEDHYDRAULIC SYSTEM FOR VARIABLEACTUATION OF THE INTAKE VALVES,PROVIDED WITH A DEVICE FOR REFILLINGTHE SYSTEM WITH FLUID

发明人：Gentile, Luca,Vattaneo, Francesco申请号：EP14197112.7申请日：20141210公开号：EP3032054B1公开日：20170329

摘要：In an internal-combustion engine equipped with an electronically controlledhydraulic system for variable actuation of the intake valves (7), an operating step ofrefilling prior to ignition of the engine is activated in order to refill a pressure chamber(C) of the system with fluid when, after a prolonged inactivity of the engine, the aforesaidchamber has been emptied. In this refilling operating step, the supply of fuel to theengine is inhibited, and the camshaft (11) of the engine is driven in rotation followingupon activation of the engine-starting electrical machine (53). In this way, a pumpingmember (16) associated to the tappet (15) for actuating an intake valve (7) is used aspump for drawing fluid into the pressure chamber (C) from an auxiliary fluid tank (600).During this step, an electrically actuated control valve (24) is opened and closed insynchronism with the movement of the pumping member (16) so as to be open when thepumping member (16) advances towards the pressure chamber (C) and be instead closed

when the pumping member (16) moves away from the pressure chamber (C).

申请人：C R F SOCIETÀ CONSORTILE PER AZIONI

地址：IT

国籍：IT

代理机构：Notaro, Giancarlo

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