Ion current detection system and method for internal combustion engine
    11.
    发明授权
    Ion current detection system and method for internal combustion engine 失效
    内燃机离子电流检测系统及方法

    公开(公告)号:US06557537B2

    公开(公告)日:2003-05-06

    申请号:US09999196

    申请日:2001-12-03

    IPC分类号: F02P306

    摘要: A battery, an energy charge inductance, and a first transistor are connected in series in an ignition system. A primary winding and a second switching device are connected in series between the ground and a point between the energy charge inductance and the first switching device. A drive circuit switches periodically on and off the first switching device and the second switching device during multispark duration of the spark plug such that each switching device has a different switching status from each other. After the multispark duration, the drive circuit switches periodically on and off the second transistor with a short switching interval. The switching interval is set such that a relatively low voltage that almost causes a spark is impressed to the spark plug. An ion current detection is implemented by using this voltage as a power source.

    摘要翻译: 电池,能量电荷电感和第一晶体管串联在点火系统中。 初级绕组和第二开关装置串联连接在地之间和能量充电电感与第一开关装置之间的点之间。 驱动电路在火花塞的多电源持续时间期间周期性地接通和断开第一开关装置和第二开关装置,使得每个开关装置彼此具有不同的开关状态。 在多重拍摄持续时间之后,驱动电路以短的切换间隔周期性地开启和关闭第二晶体管。 切换间隔被设定为使得几乎引起火花的相对低的电压被施加到火花塞。 通过使用该电压作为电源来实现离子电流检测。

    Methods and apparatus for controlling spark duration in an internal combustion engine
    13.
    发明授权
    Methods and apparatus for controlling spark duration in an internal combustion engine 有权
    用于控制内燃机中的火花持续时间的方法和装置

    公开(公告)号:US06283103B1

    公开(公告)日:2001-09-04

    申请号:US09291570

    申请日:1999-04-13

    申请人: Gary R. Hoeflich

    发明人: Gary R. Hoeflich

    IPC分类号: F02P306

    CPC分类号: F02P3/0869 F02P7/035

    摘要: An ignition system, of the type having ignition coils supplying energy to spark plugs in an internal combustion engine, includes apparatus to measure an electrical characteristic indicative of spark duration and generate a representative spark duration signal therefrom, or alternately to directly measure spark duration and generate a representative spark duration signal. Computational circuitry receives the spark duration signal and a spark duration setpoint signal, computes the error between the setpoint and the actual spark duration on a real-time basis, and modulates the energy in the high energy power supply to the ignition coils for maintaining a constant spark duration.

    摘要翻译: 具有向内燃机中的火花塞提供能量的点火线圈的点火系统包括用于测量指示火花持续时间的电特性并从其产生代表火花持续时间信号的装置,或者交替地直接测量火花持续时间并产生 代表火花持续时间信号。 计算电路接收火花持续时间信号和火花持续时间设定点信号,实时计算设定值与实际火花持续时间之间的误差,并调制点火线圈的高能量电源中的能量,以保持恒定 火花持续时间。