Engine control apparatus
    2.
    发明授权
    Engine control apparatus 失效
    发动机控制装置

    公开(公告)号:US4671242A

    公开(公告)日:1987-06-09

    申请号:US736373

    申请日:1985-05-21

    摘要: An engine control apparatus has an air flow rate measuring device for measuring an intake air flow rate. A temperature sensing element having a temperature characteristic and constituting the device is arranged in an intake pipe. The device generates an output pulse signal having a pulse width T corresponding to the intake air flow rate. An engine control unit has the one-dimensional map for storing the relationship between the engine speed N and the pulse width to of the signal corresponding to the air flow rate. This data to is read out from the one-dimensional map in accordance with the engine speed N. Subsequently, the data to is subtracted from the data T to calculate a time duration t. The unit also has a two-dimensional map for storing the relationship between each time duration t and the corresponding rate G/N in correspondence with each of the present engine speeds. A corresponding rate G/N is read out from the two-dimensional map in response to the calculated time duration t. The resultant rate G/N is used to calculate fuel injection quantity.

    摘要翻译: 发动机控制装置具有用于测量进气流量的空气流量测量装置。 具有温度特性并构成装置的温度感测元件设置在进气管中。 该装置产生具有对应于进气流量的脉冲宽度T的输出脉冲信号。 发动机控制单元具有存储发动机转速N与对应于空气流量的信号的脉冲宽度对的关系的一维映射。 根据发动机转速N从一维映射中读出该数据。接着,从数据T中减去数据,计算持续时间t。 该单元还具有用于存储与每个当前发动机速度相对应的每个持续时间t和相应速率G / N之间的关系的二维图。 响应于计算的持续时间t,从二维图中读出对应的速率G / N。 合成速率G / N用于计算燃料喷射量。

    Control system for determining the quantity of intake air of an internal
combustion engine
    3.
    发明授权
    Control system for determining the quantity of intake air of an internal combustion engine 失效
    用于确定内燃机的进气量的控制系统

    公开(公告)号:US4736302A

    公开(公告)日:1988-04-05

    申请号:US742524

    申请日:1985-06-07

    CPC分类号: F02D41/187 F02D41/263

    摘要: A system for controlling the operating condition of an engine in which a temperature sensing element constitutes an airflow measuring device disposed in an intake air passage of the engine. The temperature sensing element is supplied with a heating current in response to a start pulse signal produced with every one-half period of each combustion cycle of the engine. A comparator delivers an output signal when a reference temperature set on the basis of the air temperature measured by an auxiliary temperature sensing element is reached by the temperature of the temperature sensing element. A pulse signal indicative of the time interval between the generation of the start pulse signal and a rise in the output signal of the comparator is delivered as an airflow measurement signal. The average airflow quantity responsive to one combustion cycle of the engine is detected, and a correction factor K is calculated from the difference between two airflow rate data measured in each combustion cycle and the average airflow quantity. Based on the correction factor K, the injection quantity, injection timing and the like are calculated.

    摘要翻译: 一种用于控制发动机的操作状态的系统,其中温度感测元件构成设置在发动机的进气通道中的气流测量装置。 响应于在发动机的每个燃烧循环的每半个周期产生的起动脉冲信号,向温度感测元件供应加热电流。 当基于由辅助温度感测元件测量的空气温度设定的参考温度达到温度感测元件的温度时,比较器输出输出信号。 指示起始脉冲信号的产生和比较器的输出信号的上升之间的时间间隔的脉冲信号作为气流测量信号被输送。 检测响应于发动机的一个燃烧循环的平均气流量,并且根据在每个燃烧循环中测量的两个气流速率数据与平均气流量之间的差计算校正因子K. 基于校正因子K,计算喷射量,喷射正时等。

    Engine control apparatus
    4.
    发明授权
    Engine control apparatus 失效
    发动机控制装置

    公开(公告)号:US4730255A

    公开(公告)日:1988-03-08

    申请号:US737088

    申请日:1985-05-23

    CPC分类号: F02D41/2422 F02D41/187

    摘要: An engine control apparatus for controlling the quantity of fuel injected into the engine is equipped with an intake air flow rate measuring device for detecting the operating state of the engine. This measuring device has a heat sensitive element, which is located in the intake pipe, and outputs a pulse signal having a pulse width T corresponding to the intake fuel amount. Engine control apparatus has a plurality of map memory means in which a plurality of functions f.sub.1 (N), f.sub.2 (N), f.sub.3 (N), which express the polynomial approximation ##EQU1## for expressing the air flow rate G/N per engine revolution, are stored as the parameters of the number of engine rotations N. These functions are read out from the maps and, based on the number of engine rotations N, the fuel injection amount corresponding to the pulse width T of the air flow rate is calculated.

    摘要翻译: 用于控制喷射到发动机中的燃料量的发动机控制装置配备有用于检测发动机的运行状态的进气流量测量装置。 该测量装置具有位于进气管中的热敏元件,并输出与进气量对应的脉冲宽度T的脉冲信号。 发动机控制装置具有多个地图存储装置,其中表示用于表示每个发动机的空气流量G / N的多项式近似值“IMAGE”的多个函数f1(N),f2(N),f3(N) 旋转数据被存储为发动机转数N的参数。这些功能从图中读出,并且基于发动机转数N,与空气流量的脉冲宽度T对应的燃料喷射量是 计算。

    Apparatus for processing engine operation detection signals
    5.
    发明授权
    Apparatus for processing engine operation detection signals 失效
    用于处理发动机操作检测信号的装置

    公开(公告)号:US4800499A

    公开(公告)日:1989-01-24

    申请号:US854818

    申请日:1986-04-23

    摘要: A rotation signal Ne is generated for every 1.degree. of rotation of the engine crankshaft together with a crankshaft angle signal G for every 360.degree. of crankshaft rotation. In response to each rotation signal Ne, a pseudo random number generator generates random number data which is converted to analog data by a D/A converter and supplied to a comparator circuit. An intake air pressure detection data Pim is also supplied to the comparator circuit and the two signals are compared. When the detection data Pim is larger than the converted analog data, the comparator output level is high. The output from the comparator is read for every rotation signal Ne and, when the detection data is larger than the analog data from the D/A converter, a counter is incremented. The count value is read for every generation of the crankshaft signal G and is supplied to the engine control unit as the intake air pressure detection data. The counter is then reset to the initial count value.

    摘要翻译: 每发生一次曲轴旋转360°,每发动机曲轴每转1度产生旋转信号Ne,以及曲轴角度信号G。 响应于每个旋转信号Ne,伪随机数发生器产生随机数数据,其通过D / A转换器转换成模拟数据并提供给比较器电路。 进气压力检测数据Pim也被提供给比较器电路,并且比较两个信号。 当检测数据Pim大于转换的模拟数据时,比较器输出电平为高。 对于每个旋转信号Ne读取比较器的输出,当检测数据大于D / A转换器的模拟数据时,计数器递增。 对于每一代曲轴信号G读取计数值,并将其作为进气压力检测数据提供给发动机控制单元。 然后将计数器复位到初始计数值。

    Intake air amount control apparatus of internal combustion engine
    6.
    发明授权
    Intake air amount control apparatus of internal combustion engine 失效
    内燃机进气量控制装置

    公开(公告)号:US4549512A

    公开(公告)日:1985-10-29

    申请号:US650212

    申请日:1984-09-13

    摘要: An intake air amount control apparatus of an internal combustion engine controls an air control valve provided at a by-path formed with respect to a throttle valve which is provided in an intake air path of the engine. When the open-loop control mode of the engine is set, the apparatus determines which of the feedback loop and the open-loop control mode has been performed. When it is found that the feedback loop control mode has been switched to the open-loop control mode, a control amount corresponding to a current cooling water temperature of the engine is read out from a preset map, thus preparing for the following open-loop control. Simultaneously, a control amount in the previous feedback control mode is read out, and a current open-loop control amount is calculated by adding a compensation value to the thus read-out control amount. When it is determined that the open-loop control mode is continuously performed, a control amount corresponding to the current cooling water temperature is read from the map. Then, the difference between this control amount and the prepared control amount is obtained. The current control amount is compensated for with reference to this difference, and the amount of intake air is controlled with reference to this control amount.

    摘要翻译: 内燃机的进气量控制装置控制设置在设置在发动机的进气通路中的节流阀形成的旁路的空气控制阀。 当发动机的开环控制模式被设定时,该装置确定已经执行了哪个反馈回路和开环控制模式。 当发现反馈回路控制模式已被切换到开环控制模式时,从预设映射读出对应于发动机的当前冷却水温度的控制量,从而准备以下开环 控制。 同时,读出先前反馈控制模式中的控制量,并通过将补偿值与所读出的控制量相加来计算当前开环控制量。 当确定连续执行开环控制模式时,从地图读取对应于当前冷却水温度的控制量。 然后,获得该控制量与准备的控制量之间的差。 参照该差异对电流控制量进行补偿,参照该控制量来控制进气量。