公开(公告)号：US20170125145A1

公开(公告)日：2017-05-04

申请号：US15341066

申请日：2016-11-02

Applicant: C.R.F. Societa Consortile per Azioni

Inventor： Andrea PECORI ,  Emanuele PISANO ,  Mitzi PUCCIO

IPC: H01F7/06 ,  H01F7/08 ,  F16K31/06

Abstract: Described herein is a system for controlling a solenoid valve, which includes a driving circuit for driving a solenoid of the solenoid valve and a control unit for controlling the driving circuit. The control unit is configured for generating in the solenoid, during operation of the solenoid valve: first current signal for moving the open/close element from a first position to a second position, which is generated by the external supply network, to which the solenoid is connected; and second current signal, which is generated exclusively as a result of residual magnetism in the magnetic element of the solenoid valve and is activated when the open/close element is still in the aforesaid second position.

公开(公告)号：US20130284133A1

公开(公告)日：2013-10-31

申请号：US13738276

申请日：2013-01-10

Applicant: C.R.F. SOCIETA CONSORTILE PER AZIONI

Inventor： Claudio LANFRANCO ,  Mitzi PUCCIO

IPC: F01L1/34

CPC classification number: F01L1/34 ,  F01L9/025 ,  F01L2001/3443 ,  F01L2001/34446 ,  F01L2800/05 ,  Y10T137/7758 ,  Y10T137/7761

Abstract: A method for controlling a valve-control system for variable-lift actuation of the valves of an internal-combustion engine, wherein the valve-control system comprises, for each cylinder of the engine, a solenoid valve for controlling the flow of a hydraulic fluid in the system, and means configured for determining a real temperature value of said hydraulic fluid.The method includes: determining a deviation of performance of the solenoid valves due to a degradation of the characteristics of said hydraulic fluid with respect to nominal values thereof; and substituting for said real temperature value an equivalent temperature value consisting of a temperature value at which the hydraulic fluid having nominal characteristics would produce performance of the solenoid valves corresponding to the performance resulting from the aforesaid deviation so that each solenoid valve is governed as a function of said equivalent temperature value.

Abstract translation: 一种用于控制用于内燃机的阀的可变升程致动的阀控制系统的方法，其中所述阀控制系统包括用于每个发动机气缸的电磁阀，用于控制液压流体的流动 以及构造成用于确定所述液压流体的实际温度值的装置。 该方法包括：由于所述液压流体的特性相对于其标称值的劣化，确定电磁阀的性能偏差; 并且用所述实际温度值代替由具有标称特性的液压流体产生对应于由上述偏差产生的性能的电磁阀的性能的温度值组成的等效温度值，使得每个电磁阀被控制为功能 的等效温度值。