公开(公告)号：EP0603929B1

公开(公告)日：1996-06-05

申请号：EP93203418.4

申请日：1993-12-06

申请人： GENERAL MOTORS CORPORATION

发明人： Schroeder, Thaddeus ,  Lequesne, Bruno Patrice Bernard ,  Henry, Rassem Ragheb ,  Murty, Balarama Vempaty

IPC分类号： F01L9/04 ,  F01L1/30

CPC分类号： F01L9/04 ,  F01L1/30 ,  F01L13/0005 ,  F01L2009/0411

公开(公告)号：EP0603929A1

公开(公告)日：1994-06-29

申请号：EP93203418.4

申请日：1993-12-06

申请人： GENERAL MOTORS CORPORATION

发明人： Schroeder, Thaddeus ,  Lequesne, Bruno Patrice Bernard ,  Henry, Rassem Ragheb ,  Murty, Balarama Vempaty

IPC分类号： F01L9/04 ,  F01L1/30

CPC分类号： F01L9/04 ,  F01L1/30 ,  F01L13/0005 ,  F01L2009/0411

摘要： Each valve (18) of an internal combustion engine is driven by a separate rotary electric motor (10). The valves are preferably either rotary valves, driven directly, or poppet valves (18), driven through a cam (16). Each motor (10) may run at half the engine speed to open and close a valve (18) at a basic profile during each engine cycle. Valve operation is shaped to engine conditions by slowing the motor speed in the valve-open period to increase the valve-open period, or increasing the motor speed in the valve-open period to decrease the valve-open period. The motor speed is oppositely controlled when the valve is closed to compensate for phase changes of the motor (10) relative to the engine. Valve phase as well as opening and closing velocity of the valve (18) are controlled by motor speed. A cam mechanism (16) for poppet valves (18) comprises a cylindrical cam (24) in line with the motor axis (20) and the valve stem (21), the mechanism (16) having inner and outer cylinders (24,30), one cylinder (24) rotating with the motor (10) and carrying a cam (36) and the other containing a cam follower (42) and reciprocating with the valve (18). A motor control includes position transducers for generating crankshaft position and motor position pulse trains. The pulse trains are compared to detect any phase difference between engine and motor (10). Tables are generated to define the desired phase difference needed for particular valve characteristics. The phase difference represents the instantaneous deviation from the basic profile. One of the tables is selected according to the engine conditions and the motor (10) is driven to achieve the desired phase differences.

摘要翻译： 内燃机的每个阀门（18）由单独的旋转电动机（10）驱动。 阀优选地是旋转阀，直接驱动或通过凸轮（16）驱动的提升阀（18）。 每个发动机循环期间，每个马达（10）可以以一半的发动机速度运行，以基本轮廓打开和关闭阀（18）。 阀门操作通过在阀门打开期间减慢电机速度来增加阀门打开时间，或增加阀门打开期间的电机速度以减少阀门打开时间，形成发动机状态。 当阀门关闭时，马达速度被相反地控制，以补偿马达（10）相对于发动机的相位变化。 阀门的相位以及阀门（18）的打开和关闭速度由电机速度控制。 一种用于提升阀（18）的凸轮机构（16）包括与马达轴线（20）和阀杆（21）成直角的圆柱形凸轮（24），该机构（16）具有内圆柱体和外圆柱体（24,30 ），与电机（10）一起旋转并承载凸轮（36）的一个气缸（24），另一个容纳凸轮从动件（42）并与阀门（18）往复运动。 电动机控制器包括用于产生曲轴位置和电动机位置脉冲串的位置传感器。 比较脉冲串以检测发动机和电动机之间的任何相位差（10）。 生成表以定义特定阀特性所需的期望相位差。 相位差表示与基本曲线的瞬时偏差。 根据发动机条件选择其中一个表，并且驱动马达（10）以实现期望的相位差。