公开(公告)号：US20020134328A1

公开(公告)日：2002-09-26

申请号：US10102727

申请日：2002-03-22

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

Inventor： Stefano Chiappini ,  Andrea Pecori ,  Francesco Vattaneo

IPC: F01L009/02 ,  F01L001/34

CPC classification number: F01L9/021 ,  F01L9/025 ,  F01L2001/34446 ,  F01L2760/001

Abstract: In an internal-combustion engine with a hydraulic system for variable operation of the engine valves, there is envisaged at least one supplementary reservoir bled off to the atmosphere, communicating with the low-pressure circuit for compensating for the variations in volume of the hydraulic fluid that derive from the variations in temperature and for thus preventing air bubbles from forming in the circuit.

Abstract translation: 在具有用于可变运行发动机气门的液压系统的内燃机中，设想有至少一个补充储存器排放到大气中，与低压回路连通以补偿液压流体的体积变化 这是因为温度变化导致的，从而防止在电路中形成气泡。

公开(公告)号：US20020134331A1

公开(公告)日：2002-09-26

申请号：US10102922

申请日：2002-03-22

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

Inventor： Stefano Chiappini ,  Andrea Pecori ,  Francesco Vattaneo

IPC: F01L001/34 ,  F01L001/14

CPC classification number: F01L9/025 ,  F01L9/021 ,  F01L2001/34446

Abstract: In an internal-combustion engine with a hydraulic system for variable operation of the valves, the tappet actuated by each cam of the camshaft is slidably mounted in a tubular body which is made of a single piece with a bushing for guiding the valve-actuating piston.

Abstract translation: 在具有用于阀的可变操作的液压系统的内燃机中，由凸轮轴的每个凸轮致动的挺杆可滑动地安装在管状体中，管状体由具有用于引导阀致动活塞的衬套的单件制成 。

公开(公告)号：US20020134330A1

公开(公告)日：2002-09-26

申请号：US10102753

申请日：2002-03-22

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

Inventor： Stefano Chiappini ,  Andrea Pecori ,  Francesco Vattaneo

IPC: F01L001/34

CPC classification number: F01L9/023 ,  F01L1/053 ,  F01L2001/34446

Abstract: In an internal-combustion engine with a hydraulic system for variable operation of the valves, the piston for operating each valve includes an auxiliary hydraulic tappet.

Abstract translation: 在具有用于阀的可变操作的液压系统的内燃机中，用于操作每个阀的活塞包括辅助液压挺杆。

公开(公告)号：US20030172890A1

公开(公告)日：2003-09-18

申请号：US10259527

申请日：2002-09-30

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

Inventor： Francesco Vattaneo ,  Stefano Chiappini ,  Macor Lorentino ,  Dante Malatto

IPC: F01L001/14

CPC classification number: F01L9/025 ,  F01L9/02 ,  F01L9/021 ,  F01L2001/0537 ,  F01L2001/34446 ,  F01L2820/02

Abstract: Described herein is a multicylinder internal-combustion engine provided with an electronically controlled hydraulic device for controlling variable actuation of the valves of the engine. The final phase of the movement of closing the intake valves is slowed down by a hydraulic braking device of an improved type.

Abstract translation: 本文描述了一种多缸内燃机，其具有用于控制发动机的阀的可变致动的电控液压装置。 关闭进气门的运动的最后阶段由改进型液压制动装置减速。

公开(公告)号：US20020134332A1

公开(公告)日：2002-09-26

申请号：US10102924

申请日：2002-03-22

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

Inventor： Stefano Chiappini ,  Andrea Pecori ,  Francesco Vattaneo

IPC: F01L001/34 ,  F01L001/02 ,  F01L001/14

CPC classification number: F01L9/025 ,  F01L9/021 ,  F01L2001/34446 ,  F01L2760/001

Abstract: In an internal-combustion engine with a hydraulic system for variable operation of the valves, associated to the tappet controlled by each cam of the cam shaft is a passage for bleeding the hydraulic system.

Abstract translation: 在具有用于阀的可变操作的液压系统的内燃机中，与由凸轮轴的每个凸轮控制的挺杆相关联的是用于使液压系统流出的通道。