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    Gaseous fueled engine system and method
    1.
    发明授权
    Gaseous fueled engine system and method 有权
    气体发动机系统及方法

    公开(公告)号：US06502550B1

    公开(公告)日：2003-01-07

    申请号：US09683702

    申请日：2002-02-05

    申请人： Allan J. Kotwicki ,  Siamak Hashemi ,  Steven Joseph Szwabowski ,  Woong-chul Yang ,  Yin Chen ,  Yong-Wha Kim

    发明人： Allan J. Kotwicki ,  Siamak Hashemi ,  Steven Joseph Szwabowski ,  Woong-chul Yang ,  Yin Chen ,  Yong-Wha Kim

    IPC分类号： F02P500

    CPC分类号： F02D41/009 ,  F02D37/02 ,  F02P7/067

    摘要： An ignition and fuel control system 10 of a vehicle 18 is provided including a controller 22. The controller 22 is electrically coupled to an ignition system 14, a fuel system 16, a crankshaft position sensor 32, and a camshaft position sensor 34. The crankshaft position sensor 32 senses a crankshaft position and generates a crankshaft position signal. A camshaft position sensor 34 senses a camshaft position and generates a camshaft position signal. The controller 22 determines a crankshaft position and a camshaft position in response to the crankshaft position signal and the camshaft position signal respectively. The controller 22 identifies a reference engine cylinder in response to the crankshaft position and the camshaft position and generates a synchronization value. The controller 22 also enables the ignition system 14 and the fuel system 16 in response to the synchronization value.

    摘要翻译： 车辆18的点燃和燃料控制系统10设置有控制器22.控制器22电连接到点火系统14，燃料系统16，曲轴位置传感器32和凸轮轴位置传感器34.曲轴 位置传感器32感测曲轴位置并产生曲轴位置信号。 凸轮轴位置传感器34感测凸轮轴位置并产生凸轮轴位置信号。 控制器22分别响应于曲轴位置信号和凸轮轴位置信号来确定曲轴位置和凸轮轴位置。 控制器22响应于曲轴位置和凸轮轴位置识别参考发动机气缸，并产生同步值。 控制器22还能够响应于同步值启用点火系统14和燃料系统16。

    Cylinder air charge estimation system and method for internal combustion engine including exhaust gas recirculation
    2.
    发明授权
    Cylinder air charge estimation system and method for internal combustion engine including exhaust gas recirculation 失效
    包括排气再循环的内燃机的气缸空气充量估算系统和方法

    公开(公告)号：US06738707B2

    公开(公告)日：2004-05-18

    申请号：US10003365

    申请日：2001-11-15

    申请人： Allan J. Kotwicki ,  Steven Joseph Szwabowski ,  Woong-chul Yang ,  Yin Chen

    发明人： Allan J. Kotwicki ,  Steven Joseph Szwabowski ,  Woong-chul Yang ,  Yin Chen

    IPC分类号： F02D4118

    CPC分类号： F02D41/18 ,  F02D41/0072 ,  F02D41/32 ,  F02D2041/0067 ,  F02D2200/0402 ,  F02D2200/0414

    摘要： A system (12) and method for determining the charged air mass in a cylinder (14) of an internal combustion engine (10) are provided. The system (12) includes an electronic control unit (ECU) (58) configured to determine a temperature of the combination of charged air and recirculated exhaust gas inducted into the cylinder (14). The ECU (58) is further configured to determine a total mass flow rate of the combination of inducted air and recirculated exhaust gas based on a pressure in an intake manifold (22) of the engine (10) and the previously determined temperature. Finally, the ECU (58) is configured to determine the mass of charged air in the cylinder (14) from the total mass flow rate.

    摘要翻译： 提供了一种用于确定内燃机（10）的气缸（14）中的带电气体质量的系统（12）和方法。 系统（12）包括电子控制单元（ECU）（58），该电子控制单元（58）被配置为确定加入到气缸（14）中的带电空气和再循环废气的组合的温度。 ECU（58）还被配置为基于发动机（10）的进气歧管（22）中的压力和先前确定的温度来确定感应空气和再循环排气的组合的总质量流量。 最后，ECU（58）构成为从总质量流量确定汽缸（14）中的带电空气的质量。

    Method of determining throttle flow in a fuel delivery system
    3.
    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
    5.
    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
    6.
    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。

    Engine air/fuel ratio control responsive to stereo ego sensors
    10.
    发明授权
    Engine air/fuel ratio control responsive to stereo ego sensors 失效
    发动机空气/燃料比控制响应立体声自我感应器

    公开(公告)号：US5511377A

    公开(公告)日：1996-04-30

    申请号：US283434

    申请日：1994-08-01

    申请人： Allan J. Kotwicki

    发明人： Allan J. Kotwicki

    IPC分类号： F02D41/14 ,  F01N3/20

    CPC分类号： F02D41/1443 ,  F02D41/1456

    摘要： An air/fuel control system (8) and method for an engine (28) having two engine banks coupled to a single catalytic converter (50). First and second exhaust gas oxygen sensors (44, 55) are coupled to respective first and second exhaust manifolds (56, 57). A feedback signal is generated by a PI controller responsive to an average (104-120) of the first and second sensor outputs (44, 45). An adjustment signal is generated (440-448) by another PI controller responsive to a difference between the first and second sensor outputs (44, 45). Fuel delivered to the first engine bank (300a-306a) is adjusted by a first modified feedback signal generated by adding the adjustment term to the feedback signal (450-454). And, fuel delivered to the second engine bank (300b-306b) is adjusted by a second modified feedback signal generated by adding the adjustment term to the feedback signal (460-462).

    摘要翻译： 一种用于具有耦合到单个催化转化器（50）的两个发动机组的发动机（28）的空气/燃料控制系统（8）和方法。 第一和第二排气氧传感器（44,55）联接到相应的第一和第二排气歧管（56,57）。 响应于第一和第二传感器输出（44,45）的平均值（104-120），PI控制器产生反馈信号。 响应于第一和第二传感器输出（44,45）之间的差异，另一个PI控制器产生一个调整信号（440-448）。 通过将调整项添加到反馈信号（450-454）而产生的第一修正反馈信号来调节输送到第一发动机组（300a-306a）的燃料。 并且，通过将调整项添加到反馈信号（460-462）而产生的第二修正反馈信号来调节输送到第二发动机组（300b-306b）的燃料。