Fuel metering control system for internal combustion engine
    1.
    发明授权
    Fuel metering control system for internal combustion engine 失效
    内燃机燃油计量控制系统

    公开(公告)号:US5758630A

    公开(公告)日:1998-06-02

    申请号:US580662

    申请日:1995-12-29

    IPC分类号: F02D41/00 F02D41/14 F02D41/34

    摘要: A fuel metering control system for an internal combustion engine including a feedback loop having an adaptive controller and an adaptation mechanism that estimates a controller parameters .theta.. The adaptive controller corrects the quantity of fuel injection to bring a controlled variable obtained at least based on an output of said air/fuel ratio sensor, to a desired value. The air/fuel ratio sensor outputs are sampled and one of the sampled data is selected as the air/fuel ratio to be input to the adaptation mechanism. Similarly, the senor outputs are sampled and one of the sampled is selected in accordance with another characteristic to be used in the estimation of the air/fuel ratios of the individual cylinder. The air/fuel ratio is discriminated to be within a prescribed range, and set to a predetermined value when it is determined to be within the prescribed range.

    摘要翻译: 一种用于内燃机的燃料计量控制系统,包括具有自适应控制器的反馈回路和估计控制器参数+ E,cirθ+ EE的自适应机构。 自适应控制器校正燃料喷射量,使至少基于所述空气/燃料比传感器的输出获得的受控变量达到期望值。 空气/燃料比传感器输出被采样,并且其中一个采样数据被选择为要输入到适应机构的空燃比。 类似地,传感器输出被采样,并且根据用于估计单个气缸的空气/燃料比的另一特性来选择采样中的一个。 空气/燃料比被判断为在规定范围内,并且当确定在规定范围内时将其设定为预定值。

    Fuel metering control system for internal combustion engine
    2.
    发明授权
    Fuel metering control system for internal combustion engine 失效
    内燃机燃油计量控制系统

    公开(公告)号:US5590638A

    公开(公告)日:1997-01-07

    申请号:US545325

    申请日:1995-10-19

    IPC分类号: F02D41/00 F02D41/14 F02D41/34

    摘要: A fuel metering control system for an internal combustion engine including feedback loop having an adaptive controller and an adaptation mechanism that estimates a controller parameters .theta.. The adaptive controller corrects the quantity of fuel injection to bring a controlled variable at least obtained based on an output of said air/fuel ratio sensor to a desired value. The adaptation mechanism is input with the controlled variable once per prescribed crank angle such as a TDC of a certain cylinder of a four-cylinder engine and estimates the controller parameters (vector) such that the adaptive controller is operated to synchronize with every 4 prescribed crank angle such as every TDC of all cylinders of the internal combustion engine, or with every prescribed crank angle such as every TDC. With the arrangement, the system enables adaptive control of a commercially practical internal combustion engine without degrading control performance.

    摘要翻译: 一种用于内燃机的燃料计量控制系统,包括具有自适应控制器和估计控制器参数+ E,cirθ+ EE的自适应机构的反馈回路。 自适应控制器校正燃料喷射量,使得基于所述空气/燃料比传感器的输出至少获得控制变量达到期望值。 适应机构以每个规定的曲柄角一次输入控制变量,例如四缸发动机的某个气缸的TDC,并估计控制器参数(矢量),以使自适应控制器与每4个规定的曲柄同步 内燃机的所有气缸的每个TDC或每个规定的曲柄角度(例如每个TDC)的角度。 通过该装置,该系统能够实现对商业上实用的内燃机的自适应控制,而不降低控制性能。

    Fuel metering control system for internal combustion engine
    5.
    发明授权
    Fuel metering control system for internal combustion engine 失效
    内燃机燃油计量控制系统

    公开(公告)号:US5558076A

    公开(公告)日:1996-09-24

    申请号:US514857

    申请日:1995-08-14

    摘要: A fuel metering control system for an internal combustion engine, having a feedback loop. In the system, the quantity of fuel injection (Tim) to be supplied to the engine (plant) is determined outside of the feedback loop. A first feedback correction coefficient (KSTR) is calculated using an adaptive law, while a second feedback correction coefficient (KLAF(KSTRL)), whose control response is inferior to the first feedback correction coefficient is calculated using a PID control law. The feedback correction coefficients are calculated such that the plant output (air/fuel ratio) is brought to a desired value (desired air/fuel ratio). The engine is equipped with a variable valve timing mechanism which switches the valve timing between characteristics for low engine speed and those for high engine speed. If the characteristic for high engine speed is selected, the second feedback correction coefficient is used for fuel injection quantity correction.

    摘要翻译: 一种用于内燃机的燃料计量控制系统,具有反馈回路。 在该系统中,在反馈回路之外确定要供应给发动机(工厂)的燃料喷射量(Tim)。 使用自适应规律计算第一反馈校正系数(KSTR),而使用PID控制定律计算其控制响应低于第一反馈校正系数的第二反馈校正系数(KLAF(KSTRL))。 计算反馈校正系数,使得工厂输出(空气/燃料比)达到期望值(期望的空气/燃料比)。 该发动机配备有可变气门正时机构,可在低发动机转速的特性与高发动机转速的特性之间切换气门正时。 如果选择高发动机转速的特性,则将第二反馈校正系数用于燃料喷射量校正。

    Fuel metering control system for internal combustion engine
    7.
    发明授权
    Fuel metering control system for internal combustion engine 失效
    内燃机燃油计量控制系统

    公开(公告)号:US5720265A

    公开(公告)日:1998-02-24

    申请号:US514632

    申请日:1995-08-14

    IPC分类号: F02D13/02 F02D41/14

    摘要: A fuel metering control system for an internal combustion engine, having a feedback loop. In the system, the quantity of fuel injection (Tim) to be supplied to the engine (plant) is determined outside of the feedback loop. A first feedback correction coefficient (KSTR) is calculated using an adaptive law, while a second feedback correction coefficient (KLAF), whose control response is inferior to that of the first feedback correction coefficient, is calculated using a PID control law. The feedback correction coefficients are calculated such that the plant output (air/fuel ratio) is brought to a desired value (desired air/fuel ratio). The coefficients are calculated at least in parallel and either of them is selected to be multiplied by the quantity of fuel injection (Ti).

    摘要翻译: 一种用于内燃机的燃料计量控制系统,具有反馈回路。 在该系统中,在反馈回路之外确定要供应给发动机(工厂)的燃料喷射量(Tim)。 使用自适应法计算第一反馈校正系数(KSTR),而使用PID控制定律计算其控制响应低于第一反馈校正系数的第二反馈校正系数(KLAF)。 计算反馈校正系数,使得工厂输出(空气/燃料比)达到期望值(期望的空气/燃料比)。 至少并行计算系数,并选择其中的任一个乘以燃料喷射量(Ti)。