公开(公告)号：US20110251777A1

公开(公告)日：2011-10-13

申请号：US13069862

申请日：2011-03-23

申请人： PHILIPPE S. FARAH ,  RONALD J. KREFTA ,  BRENT JACK WAHBA ,  EUGENE ANTHONY KOBOS ,  KEVIN RICHARD KEEGAN

发明人： PHILIPPE S. FARAH ,  RONALD J. KREFTA ,  BRENT JACK WAHBA ,  EUGENE ANTHONY KOBOS ,  KEVIN RICHARD KEEGAN

IPC分类号： F02D41/24

CPC分类号： F02D41/20 ,  F02D41/1401 ,  F02D2041/2027 ,  F02D2041/2055

摘要： A system and method for controlling an injection time of a fuel injector. The system includes a drive circuit configured to output a drive signal having a pulse width, wherein the injection time is influenced by the pulse width and a closing electrical decay of the fuel injector. A controller is configured to determine the closing electrical decay of the fuel injector and adapt the pulse width based on the closing electrical decay to control the injection time. The closing electrical decay includes a closing response. The controller determines the closing response based on an injector signal, such as a coil voltage of the fuel injector. By determining the closing response, the pulse width can be adjusted to compensate for fuel injector part-to-part variability, fuel injector wear, variations in fuel pressure received by the fuel injector, dirt in the fuel injector, and the like.

摘要翻译： 一种用于控制燃料喷射器的喷射时间的系统和方法。 该系统包括：驱动电路，被配置为输出具有脉冲宽度的驱动信号，其中喷射时间受燃料喷射器的脉冲宽度和闭合电衰减的影响。 控制器被配置为确定燃料喷射器的闭合电衰减，并且基于闭合电衰减来适应脉冲宽度以控制喷射时间。 关闭电气衰减包括关闭响应。 控制器基于诸如燃料喷射器的线圈电压的喷射器信号来确定关闭响应。 通过确定关闭响应，可以调整脉冲宽度以补偿燃料喷射器部件间变化，燃料喷射器磨损，燃料喷射器接收的燃料压力变化，燃料喷射器中的污垢等。