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49 条记录 (耗时 0.015 秒)

    Diagnostic system for detecting catalyst failure using switch ratio
    1.
    发明公开
    Diagnostic system for detecting catalyst failure using switch ratio 有权
    用于使用占空比检测催化剂的错误诊断装置

    公开(公告)号：EP1118753A3

    公开(公告)日：2003-06-18

    申请号：EP01300359.5

    申请日：2001-01-16

    申请人： Ford Global Technologies, Inc.

    发明人： Sealy, Brent Edward ,  Behr, Kenneth John ,  Booth, Richard Andrew ,  Cullen, Michael John

    IPC分类号： F01N11/00

    CPC分类号： F01N11/007 ,  F01N2550/02 ,  F01N2900/0421 ,  Y02T10/47

    摘要： A method and system for diagnosing catalyst operation in an internal combustion engine (32) having a two-bank, three EGO sensor structure (38,42,46) includes monitoring when the EGO sensors switch states between rich and lean and determining the ratio between a switch count of the post-catalyst EGO sensor signal and a switch count of a pre-catalyst EGO sensor signal over a selected time period. If the exhaust bank is a one-sensor bank having only a post-catalyst EGO sensor (46) and not a pre-catalyst EGO sensor, the system uses the switch count from the pre-catalyst EGO sensor (38) in the two-sensor bank to calculate the switch ratio, thereby allowing calculation of two switch ratios without two matched pairs of EGO sensors. The switch ratio indicates the efficiency of the catalyst and may be compared with later-generated ratios to monitor converter efficiency over time.

    摘要翻译： 一种用于内燃发动机（32），诊断催化剂操作具有两银行，三个EGO传感器结构（38,42,46）的方法和系统包括监测当浓和稀和确定性采矿之间的比值之间的EGO传感器开关状态 催化剂后EGO传感器信号的开关计数和催化剂预EGO传感器信号随选定的时间段的开关计数。 如果排气银行是仅具有一个催化剂后EGO传感器（46），而不是一个催化剂预EGO传感器的一传感器长椅，系统使用从双催化剂预EGO传感器（38）的开关计数 传感器替补来计算开关比，由此允许两个比率的计算切换，而无需两个匹配对EGO传感器。 开关比表示，催化剂的效率，并且可以与所生成的后述的比率进行比较，以监测随着时间转换器的效率。

    Method for controlling air/fuel mixture in an internal combustion engine
    4.
    发明公开
    Method for controlling air/fuel mixture in an internal combustion engine 审中-公开
    Verfahren zum Regeln des Luft-Kraftstoff-Verhältnisseseines Verbrennungsmotors

    公开(公告)号：EP1118757A3

    公开(公告)日：2001-12-05

    申请号：EP01300138.3

    申请日：2001-01-08

    申请人： Ford Global Technologies, Inc.

    发明人： Sealy, Brent Edward ,  Behr, Kenneth John ,  Cullen, Michael John ,  Booth, Richard Andrew

    IPC分类号： F02D41/14 ,  F02D41/24

    CPC分类号： F02D41/1443 ,  F02D41/2454 ,  F02D41/248

    摘要： A method and system for controlling the air/fuel ratio in an internal combustion engine (12) having a first group of cylinders and a second group of cylinders. The first group of cylinders is coupled to a catalyst (20) and at least one oxygen sensor (18,22), which provides a first feedback signal. The second group of cylinders is coupled to a catalyst (24) and a post-catalyst oxygen sensor (26), which provides a second feedback signal. A controller (202) uses the first and second feedback signals to calculate a short-term air/fuel bias value for the second group of cylinders. The controller (202) also calculates a new long-term air/fuel bias value corresponding to the current engine speed and engine. The new long-term air/fuel bias value is based on a previously-calculated long-term air/fuel bias value calculated for the same engine load and speed. A total air/fuel bias value is calculated based on the short-term air/fuel bias value and the long-term air/fuel bias value. The new long-term air/fuel bias value is stored for future calculations.

    摘要翻译： 一种用于控制具有第一组气缸和第二组气缸的内燃机（12）中的空气/燃料比的方法和系统。 第一组气缸耦合到催化剂（20）和至少一个氧传感器（18,22），其提供第一反馈信号。 第二组气缸与催化剂（24）和催化后氧传感器（26）相连，其提供第二反馈信号。 控制器（202）使用第一和第二反馈信号来计算第二组气缸的短期空气/燃料偏置值。 控制器（202）还计算对应于当前发动机转速和发动机的新的长期空气/燃料偏差值。 新的长期空气/燃料偏差值基于以前计算的相同发动机负载和速度的长期空气/燃料偏差值。 基于短期空气/燃料偏差值和长期空气/燃料偏差值计算总空气/燃料偏差值。 新的长期空气/燃料偏差值被存储用于将来的计算。

    Method and apparatus for controlling lean operation of an internal combustion engine
    5.
    发明公开
    Method and apparatus for controlling lean operation of an internal combustion engine 审中-公开
    Methode und Vorrichtung zur Steuerung des Magergemischverbrennungsbetriebs einer Brennkraftmaschine

    公开(公告)号：EP1134371A2

    公开(公告)日：2001-09-19

    申请号：EP01302353.6

    申请日：2001-03-14

    申请人： Ford Global Technologies, Inc.

    发明人： Bidner, David Karl ,  Surnilla, Gopichandra ,  Hepburn, Jeffrey Scott ,  Robichaux, Jerry D. ,  Cullen, Michael John

    IPC分类号： F01N9/00 ,  F02D41/14

    CPC分类号： F01N3/0842 ,  F02D41/0275 ,  F02D41/1441 ,  F02D41/146 ,  F02D41/1462 ,  F02D41/1463 ,  Y02T10/22

    摘要： A method and system for controlling the operation of "lean-burn" internal combustion engines determines a current rate of vehicle NO x emissions, and determines a threshold value for permissible vehicle NO x emissions based on at least one current value for the intake air-fuel ratio, engine speed, engine load (e.g., brake torque, manifold air pressure, or throttle position), and/or vehicle speed. A differential NO x emissions rate is calculated as the difference between the current rate and the threshold rate, and the differential rate is accumulated over time to obtain a differential measure representing the amount by which cumulative NO x emissions have fallen below permissible levels therefor. Lean engine operation is disabled when the differential NO x emissions measure exceeds a predetermined excess vehicle NO x emission value. In this manner, vehicle NO x emissions are favourably controlled even when the engine is operated "off-cycle," i.e., under operating conditions falling outside of the FTP driving cycles.

    摘要翻译： 用于控制“稀燃”内燃机的运行的方法和系统确定车辆NOx排放的当前速率，并且基于进气空燃比的至少一个当前值来确定允许的车辆NOx排放的阈值 ，发动机转速，发动机负载（例如，制动转矩，歧管空气压力或节气门位置）和/或车辆速度。 差分NOx排放率被计算为当前速率和阈值比率之间的差异，并且差分速率随时间累积以获得表示累积NOx排放量已经低于其允许水平的量的差异量度。 当差示NOx排放量超过预定的过量车辆NOx排放值时，精益引擎操作被禁用。 以这种方式，即使当发动机“非循环”操作，即在不在FTP驱动循环之外的操作条件下，车辆NOx排放也被有利地控制。

    Exhaust gas temperature estimation
    7.
    发明公开
    Exhaust gas temperature estimation 有权
    废气温度估算

    公开(公告)号：EP1020624A3

    公开(公告)日：2002-07-10

    申请号：EP00300247.4

    申请日：2000-01-14

    申请人： Ford Global Technologies, Inc.

    发明人： Cullen, Michael John ,  Nader, David Robert ,  Kindree, James Matthew ,  Jentz, Robert Roy

    IPC分类号： F02D21/08 ,  F02M25/07

    CPC分类号： F02D41/0072 ,  F02D2041/007 ,  Y02T10/47

    摘要： An EGR system for an internal combustion engine (105) comprises an EGR valve (150) disposed in an EGR recirculation conduit (125) involves estimating exhaust gas temperature at an engine exhaust manifold (130). An exhaust gas temperature drop between the exhaust manifold and the EGR valve (150) is estimated and a time constant is determined that models the exhaust gas temperature as a function of EGR mass flow rate so that exhaust gas temperature at the EGR valve (150) can be estimated by adjusting the estimated exhaust gas temperature at the exhaust manifold (130) by the exhaust gas temperature drop and the time constant.

    Control method for a vehicle having an engine and an accessory device
    10.
    发明公开
    Control method for a vehicle having an engine and an accessory device 有权
    一种用于车辆的控制方法，具有内燃发动机和辅助设备

    公开(公告)号：EP1116616A2

    公开(公告)日：2001-07-18

    申请号：EP01300103.7

    申请日：2001-01-08

    申请人： Ford Global Technologies, Inc.

    发明人： Kotwicki, Allan Joseph ,  Blaha, George ,  Dage, Gerhard A. ,  Russell, John David ,  Cullen, Michael John

    IPC分类号： B60H1/32 ,  F02D41/08

    CPC分类号： B60H1/3208 ,  F02D41/083

    摘要： A method for controlling cycling of an air conditioning compressor (220) coupled to an internal combustion engine (10) interrupts normal cycling based on operation conditions. In addition, normal engaged and disengaged cycling durations are adaptively estimated in real-time. The method of the present invention achieves improved fuel economy and improved drive feel. As an example, improved fuel economy is achieved by engaging the compressor during braking or when the engine is being driven by the vehicle. As another example, improved drive feel is achieved by engaging the compressor during transient conditions when drive feel is unaffected.

    摘要翻译： 一种用于控制在内燃机（10），耦合到空调压缩机（220）的循环方法中断基于操作条件正常循环。 此外，正常的接合与分离循环持续时间在实时自适应估计。 本发明的方法实现了改进的燃油经济性和改进的驱动的感觉。 如在实施例中，改进的燃料经济性由制动或当发动机正在被驱动车辆过程中接合所述压缩机实现。 作为另一实施例，改进的驱动器的感觉是通过当驱动手感不受影响在瞬态条件期间接合所述压缩机实现。