公开(公告)号：US20030111047A1

公开(公告)日：2003-06-19

申请号：US10259528

申请日：2002-09-30

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

Inventor： Vittorio Doria ,  Marco Lucatello

IPC: F01L001/34

CPC classification number: F01L9/025 ,  F01L9/02 ,  F01L9/023 ,  F01L13/0015 ,  F01L2800/00 ,  F01L2800/06 ,  F01L2820/01 ,  F02D13/0203 ,  F02D13/0207 ,  F02D13/0253 ,  Y02T10/18

Abstract: A multicylinder petrol engine is provided with a hydraulic system for variable actuation of the valves, which enables easy control of operation of the engine according to different strategies. The engine according to the invention is, in particular, able to operate with a variable engine displacement in a modular way via the exclusion of selected cylinders, to control combustion by means of adjustment of the effective compression ratio, and to control recirculation of the exhaust gases at intake, in order to achieve low levels of consumption and reduced harmful exhaust emissions.

Abstract translation: 多缸汽油发动机配备有用于阀的可变致动的液压系统，其能够根据不同的策略容易地控制发动机的运行。 根据本发明的发动机特别地能够通过排除所选择的气缸以模块化方式操作可变发动机排量，通过调节有效压缩比来控制燃烧，并且控制排气的再循环 为了达到低水平的消耗和减少有害排放物排放的气体。