Internal-combustion engine with an electronically

专利名称：Internal-combustion engine with an

electronically controlled hydraulic systemfor variable actuation of the intake valves,provided with a device for refilling thesystem with fluid

发明人：Luca Gentile,Francesco Vattaneo申请号：US14874720申请日：20151005公开号：US09970336B2公开日：20180515

专利附图：

摘要：In an engine having an electronically controlled hydraulic system for variableactuation of intake valves, an operating step of refilling, prior to ignition of the engine, isactivated to refill a pressure chamber of the system with fluid when, after prolongedengine inactivity, the chamber has been emptied. In this refilling step, fuel supply to theengine is inhibited, and a camshaft is rotationally driven following upon activation of anengine-starting electrical machine. In this way, a pumping member associated to a tappetfor actuating an intake valve is used as a pump for drawing fluid into the pressurechamber from an auxiliary fluid tank. During this step, a control valve is opened andclosed in synchronism with movement of the pumping member so as to be open whenthe pumping member advances towards the pressure chamber and closed when thepumping member moves away from the pressure chamber.

申请人：C.R.F. Societa Consortile per Azioni

地址：Orbassano (Turin) IT

国籍：IT

代理机构：RMCK Law Group PLC

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