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38 条记录 (耗时 0.022 秒)

    Method of determining throttle flow in a fuel delivery system
    1.
    发明授权
    Method of determining throttle flow in a fuel delivery system 失效
    确定燃油输送系统中的油门流量的方法

    公开(公告)号：US06591667B1

    公开(公告)日：2003-07-15

    申请号：US09839437

    申请日：2001-04-20

    申请人： Allan J. Kotwicki ,  Ross Dykstra Pursifull

    发明人： Allan J. Kotwicki ,  Ross Dykstra Pursifull

    IPC分类号： G01M1900

    CPC分类号： F02D11/107 ,  F02D41/187 ,  F02D41/22 ,  F02D2041/225 ,  F02D2200/0402 ,  Y02T10/40

    摘要： A method of determining throttle flow in a fuel delivery system is disclosed. First, a time-efficient throttle flow data collection method is described. The collection method uses a sonic nozzle flow bench to measure airflow as a function of throttle angle and pressure in a manner analogous to on-engine dynamometer throttle flow characterization. Opening each sonic nozzle combination, then recording throttle downstream pressure and computed nozzle flow allows data to be taken in a fraction of the time normally needed. In conventional methods, the estimated airflow rate as a function of throttle angle differs from the measured airflow rate because the leak area is incorrect. The method of the invention correctly determines the estimated throttle airflow rate by using a low pass filtering technique to adjust the estimated airflow rate to eventually equal the measured airflow rate, particularly at small throttle angles.

    摘要翻译： 公开了一种确定燃油输送系统中的节流流量的方法。 首先，描述了一种节省时间的节流流量数据收集方法。 收集方法使用声波喷嘴流动台以类似于发动机功率计油门流量表征的方式测量作为节气门角度和压力的函数的气流。 打开每个声波喷嘴组合，然后记录节气门下游压力和计算喷嘴流量允许在通常需要的时间的一小部分中拍摄数据。 在常规方法中，作为节流角的函数的估计气流速率与测量的气流速率不同，因为泄漏区域不正确。 本发明的方法通过使用低通滤波技术来正确地确定估计的节气门气流速率，以调整估计的气流速率，以最终等于所测量的气流速率，特别是在小节气门角度。

    Engine air/fuel control with exhaust gas oxygen sensor heater control
    7.
    发明授权
    Engine air/fuel control with exhaust gas oxygen sensor heater control 失效
    发动机空气/燃油控制与排气氧气传感器加热器控制

    公开(公告)号：US5588417A

    公开(公告)日：1996-12-31

    申请号：US552047

    申请日：1995-11-02

    申请人： Allan J. Kotwicki ,  Jeffrey A. Doering ,  Michael P. Falandino

    发明人： Allan J. Kotwicki ,  Jeffrey A. Doering ,  Michael P. Falandino

    IPC分类号： F02D41/14 ,  F02P15/08

    CPC分类号： F02D41/1494 ,  F02D41/1456

    摘要： An engine air/fuel control system responsive to an electrically heated exhaust gas oxygen sensor. Electrical power is supplied to the sensor by a feedback control system responsive to peak-to-peak measurement in the sensor output. Peak-to-peak measurements are averaged over a predetermined number of sample times and the resulting average value compared to a deadband. When the average measurement is above, within, or below the deadband, electrical power to the heater is, respectively, reduced, held constant, or decreased.

    摘要翻译： 一种响应电加热排气氧传感器的发动机空气/燃料控制系统。 电力通过响应于传感器输出中的峰 - 峰测量的反馈控制系统提供给传感器。 在预定数量的采样时间内对峰 - 峰测量进行平均，并且与死区相比得到的平均值。 当平均测量值在死区之上，之内或之下时，加热器的电功率分别降低，保持恒定或降低。

    Catalyst monitoring using ego sensors
    8.
    发明授权
    Catalyst monitoring using ego sensors 失效
    使用自我传感器进行催化剂监测

    公开(公告)号：US5365216A

    公开(公告)日：1994-11-15

    申请号：US203916

    申请日：1994-03-01

    申请人： Allan J. Kotwicki ,  Douglas R. Hamburg

    发明人： Allan J. Kotwicki ,  Douglas R. Hamburg

    IPC分类号： F01N3/20 ,  F01N11/00 ,  F02D45/00 ,  G01N27/409 ,  G01N27/416 ,  B60Q1/00 ,  F01N3/00

    CPC分类号： F01N11/007 ,  F01N2550/02 ,  Y02T10/22 ,  Y02T10/47

    摘要： A method of monitoring, while on board an automotive vehicle, one or more of catalyst performance, engine misfire, and combustion quality, the vehicle having an internal combustion engine equipped with a catalyst for converting noxious emissions of the engine, comprising: (i) exposing at least one pair of EGO sensors to substantially the same emissions either exiting from the engine or from the catalyst, one of the EGO sensors having its electrode highly catalytic, and the other sensor having its electrode low-to-noncatalytic; (ii) comparing the outputs of the sensor electrodes (amplitude, frequency, or phase shift) to determine if there is a sufficient differential to indicate a misfire or poor combustion in the case of the sensors being located downstream of the engine exhaust but upstream of the catalyst, or indicating poor catalyst efficiency in the case of the sensors being placed substantially immediately downstream of the catalyst. The catalyst may be a three-way catalyst (or an oxidation catalyst). The sensors may be of the EGO, HEGO, or UEGO types. Two pairs of sensors may be used, a first pair being placed substantially immediately upstream of the catalyst and the second pair being placed substantially immediately downstream of the catalyst, the pairs of EGO sensors being incorporated into a closed-loop feedback control of the engine fuel control system.

    摘要翻译： 一种在机载车上进行一种或多种催化剂性能，发动机失火和燃烧质量的监测的方法，所述车辆具有配备有用于转换发动机有害排放物的催化剂的内燃机，其包括：（i） 将至少一对EGO传感器暴露于从发动机或从催化剂离开的基本上相同的排放物，EGO传感器之一具有高度催化的电极，另一传感器具有其电极低至非催化剂; （ii）比较传感器电极的输出（振幅，频率或相移）以确定在传感器位于发动机排气下游的情况下是否存在足够的差异以指示发动机失火或燃烧不良 催化剂，或者在传感器基本上立即放置在催化剂的下游的情况下表明催化剂效率差。 催化剂可以是三元催化剂（或氧化催化剂）。 传感器可以是EGO，HEGO或UEGO类型。 可以使用两对传感器，第一对基本上立即放置在催化剂的上游，并且第二对基本上立即放置在催化剂的下游，这对EGO传感器被并入发动机燃料的闭环反馈控制 控制系统。