公开(公告)号：US3702601A

公开(公告)日：1972-11-14

申请号：US3702601D

申请日：1971-06-11

Applicant: GEN MOTORS CORP

Inventor： GORDON COLIN C ,  MCGAVIC JOHN P

IPC: F02D41/36 ,  F02M51/00

CPC classification number: F02D41/36 ,  Y02T10/44

Abstract: An internal combustion engine includes a group of eight fuel injectors for applying fuel to the engine. A set of four timing signals developed in synchronization with engine operation collectively contain eight magnitude permutations per engine cycle. The occurrence of each of the magnitude permutations defines the start of injection for a corresponding one of the fuel injectors. The set of timing signals is combined to form a pair of timing signals which are combined to form a single timing signal containing all of the magnitude permutations. A single pulse train developed in synchronization with the single timing signal contain eight control pulses per engine cycle. The length of each of the control pulses defines the period of injection for a corresponding one of the fuel injectors in time compressed nonoverlapping relationship. The single pulse train is separated by the single timing signal to form a pair of pulse trains which are separated by the pair of timing signals to form a set of four pulse trains collectively containing all of the control pulses. The length of the control pulses in the set of pulse trains is extended to define the period of injection for the fuel injectors in time expanded overlapping relationship. Lastly, the set of pulse trains is separated by the set of timing signals to form a series of eight pulse trains each containing control pulses which are applied to energize a corresponding one of the group of eight fuel injectors.

Abstract translation: 内燃机包括一组用于向发动机施加燃料的燃料喷射器。 与发动机运行同步开发的四组定时信号集合包含每发动机循环8个排量。 每个大小排列的出现限定了对应的一个燃料喷射器的喷射开始。 组合定时信号以形成一对定时信号，这些定时信号被组合以形成包含所有幅度排列的单个定时信号。 与单个定时信号同步开发的单个脉冲串每个发动机循环包含八个控制脉冲。 每个控制脉冲的长度在时间压缩非重叠关系中限定对应的一个燃料喷射器的喷射周期。 单个脉冲序列由单个定时信号分离，以形成一对脉冲序列，由一对定时信号分离，以形成一组共同包含所有控制脉冲的四个脉冲串。 脉冲串组中的控制脉冲的长度被延长以在时间上扩大的重叠关系中限定燃料喷射器的喷射周期。 最后，脉冲序列组被定时信号组隔开，以形成一系列八个脉冲序列，每个脉冲序列包含控制脉冲，该控制脉冲被施加以激励该组八个燃料喷射器中相应的一个。

公开(公告)号：US3918417A

公开(公告)日：1975-11-11

申请号：US30142272

申请日：1972-10-27

Applicant: GEN MOTORS CORP

Inventor： GAMBILL CHARLES C ,  MCGAVIC JOHN P

IPC: F02D41/34 ,  F02D41/04 ,  F02D41/32 ,  F02B3/00

CPC classification number: F02D41/32

Abstract: A primary control pulse is initiated in synchronization with the operation of an internal combustion engine and is terminated after a time duration Tp which is determined as a preselected function of a primary engine operating parameter. A control voltage is developed across a capacitor having a capacitance C. The capacitor is charged with a charge current Ic in response to the presence of a primary control pulse to increase the control voltage from an initial level Li to a peak level Lp. The capacitor is discharged with a discharge current Id in response to the absence of a primary control pulse to decrease the control voltage from the peak level Lp to a final level Lf. Fuel is applied to the engine in an amount proportional to the time interval established between the departure of the control voltage from the initial level Li and the arrival of the control voltage at the final level Lf. As a result, the total quantity of fuel Q delivered to the engine is defined by the following equation:

Abstract translation: 主控制脉冲与内燃机的运行同步启动，并在被确定为主发动机运行参数的预选功能的持续时间Tp之后终止。 在具有电容C的电容器上产生控制电压。响应于主控制脉冲的存在，对电容器充电充电电流Ic，以将控制电压从初始电平Li增加到峰值电平Lp。 响应于不存在初级控制脉冲，电容器以放电电流Id放电，以将控制电压从峰值电平Lp降低到最终电平Lf。 燃料以与控制电压离开初始电平Li之间建立的时间间隔和控制电压到达最终电平Lf成比例的量施加到发动机。 结果，发送到发动机的燃料Q的总量由以下等式定义：Q NOTEQUAL T p（1 + Ic / Id）+（Li-Lf）C / Id。 充电电流Ic和放电电流Id中的至少一个被确定为与主发动机工作参数相乘的次级发动机工作参数的预选功能。 将初始水平Li和最终水位Lf中的至少一个确定为与主发动机工作参数相加的二次发动机运转参数的预选功能。