Invention Grant
- Patent Title: Internal-combustion engine, with system for variable actuation of the intake valves provided with a three-way electric valve having three levels of supply current, and method for controlling said engine
- Patent Title (中): 内燃机，具有用于可变致动的系统，其具有设有三电平供电电流的三通电动阀，以及用于控制所述发动机的方法
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Application No.: US14271782Application Date: 2014-05-07
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Publication No.: US09127576B2Publication Date: 2015-09-08
- Inventor: Sergio Stucchi , Raffaele Ricco , Onofrio De Michele , Marcello Gargano , Mitzi Puccio , Domenico Lepore
- Applicant: C.R.F. Societa Consortile per Azioni
- Applicant Address: IT Orbassano (Turin)
- Assignee: C.R.F. Societá Consortile per Azioni
- Current Assignee: C.R.F. Societá Consortile per Azioni
- Current Assignee Address: IT Orbassano (Turin)
- Agency: Heslin Rothenberg Farley & Mesiti P.C.
- Agent Victor A. Cardona, Esq.
- Priority: EP13167181 20130509
- Main IPC: F01L9/02
- IPC: F01L9/02 ; F01L13/00
Abstract:
An internal-combustion engine includes a three-way, three-position control valve with an inlet communicating with a pressurized-fluid chamber and with a hydraulic actuator of an intake valve, and two outlets communicating, respectively, with the actuator of the other intake valve and with said exhaust channel. The control valve has a first position, in which the inlet communicates with both of the outlets, a second position, in which the inlet communicates only with the outlet connected to the actuator of an intake valve and does not communicate, with the outlet connected to the exhaust channel, and a third position, in which the inlet does not communicate with the two outlets. The control valve has an electric actuator supplied only at three different values of electric current to bring the valve into the three positions.
Public/Granted literature
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