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18 条记录 (耗时 0.018 秒)

    Control strategy for lean NOx trap regeneration
    2.
    发明申请
    Control strategy for lean NOx trap regeneration 有权
    贫NOx吸收再生控制策略

    公开(公告)号：US20050222748A1

    公开(公告)日：2005-10-06

    申请号：US10812467

    申请日：2004-03-30

    申请人： Sanjeev Naik ,  David Cleary

    发明人： Sanjeev Naik ,  David Cleary

    IPC分类号： F01N9/00 ,  F02D41/02 ,  F02D41/14 ,  F02D41/30 ,  G06F7/00

    CPC分类号： F02D41/0275 ,  F02D41/1456 ,  F02D41/3029 ,  F02D2200/0806

    摘要： A method for controlling regeneration of a lean NOx trap includes estimating an accumulated NOx in the lean NOx trap; determining whether the estimated NOx exceeds a first threshold value or a second threshold value; estimating the temperature of the lean NOx trap; determining whether the estimated temperature exceeds a threshold temperature; determining a desired air-fuel ratio for initiating a regeneration event, the desired air-fuel ratio being determined based upon the estimated NOx and the estimated temperature of the lean NOx trap; hastening the occurrence of a regeneration event when the estimated NOx exceeds the first threshold value through active control of engine operating regimes; and initiating a regeneration event when the estimated NOx exceeds the second threshold value or when the estimated temperature exceeds the threshold temperature by forcing homogenous operation of the engine at the desired air-fuel ratio.

    摘要翻译： 用于控制稀薄NOx捕集器的再生的方法包括：估计贫NOx捕集器中累积的NOx; 确定估计的NOx是否超过第一阈值或第二阈值; 估计贫NOx捕集器的温度; 确定估计温度是否超过阈值温度; 确定用于启动再生事件的期望的空燃比，基于所估计的NOx和所述贫NOx收集器的估计温度来确定所述空燃比; 通过主动控制发动机运转状态，当估计的NOx超过第一阈值时，加速再生事件的发生; 以及当所述估计的NOx超过所述第二阈值时或者当所述估计温度超过所述阈值温度时，通过迫使所述发动机以期望的空燃比的均匀运行来启动再生事件。

    POLYMER BLENDS
    3.
    发明申请
    POLYMER BLENDS 有权
    聚合物混合物

    公开(公告)号：US20130209775A1

    公开(公告)日：2013-08-15

    申请号：US13878582

    申请日：2011-10-11

    申请人： Scott D. Allen ,  Sanjeev Naik

    发明人： Scott D. Allen ,  Sanjeev Naik

    IPC分类号： C08L69/00 ,  C08L23/12 ,  B29C47/00 ,  C08L23/06

    CPC分类号： C08L69/00 ,  B29C47/0057 ,  C08J5/18 ,  C08L23/04 ,  C08L23/06 ,  C08L23/10 ,  C08L23/12 ,  Y10T428/31507 ,  C08L23/02 ,  C08L67/04

    摘要： The present invention provides, among other things, extruded blends of aliphatic polycarbonates and polyolefins. In one aspect, provided blends comprise aliphatic polycarbonates such as poly(propylene carbonate) and a lesser amount of a crystalline or semicrystalline polymer. In certain embodiments, provided blends are characterized in that they exhibit unexpected improvements in their elongation properties. In another aspect, the invention provides methods of making such materials and applications of the materials in applications such as the manufacture of consumer packaging materials.

    摘要翻译： 本发明尤其提供了脂肪族聚碳酸酯和聚烯烃的挤出共混物。 在一个方面，所提供的共混物包括脂族聚碳酸酯，例如聚（碳酸亚丙酯）和较少量的结晶或半结晶聚合物。 在某些实施方案中，所提供的共混物的特征在于它们在伸长性能方面表现出意想不到的改进。 另一方面，本发明提供了制造这种材料的方法以及将材料应用于如消费者包装材料的制造等应用中。

    Coordinated engine control for lean NOx trap regeneration
    4.
    发明申请
    Coordinated engine control for lean NOx trap regeneration 有权
    协调发动机控制，用于精益NOx捕集器再生

    公开(公告)号：US20050217240A1

    公开(公告)日：2005-10-06

    申请号：US10812584

    申请日：2004-03-30

    申请人： Sanjeev Naik

    发明人： Sanjeev Naik

    IPC分类号： F01N3/00 ,  F01N3/08 ,  F01N13/02 ,  F01N13/04 ,  F02D41/02 ,  F02D41/14 ,  F02D41/40

    CPC分类号： F02D41/0275 ,  F01N3/0871 ,  F01N13/009 ,  F01N13/011 ,  F02D41/1488 ,  F02D2250/21

    摘要： A method for controlling a direct-injection gasoline engine during regeneration of a lean NOx trap disposed in an exhaust path of the engine includes determining the current air-fuel ratio and comparing the current air-fuel ratio to a lean limit air-fuel ratio. Transitions from lean stratified engine operation to rich homogenous engine operation are delayed until the current air-fuel ratio reaches the lean limit air-fuel ratio.

    摘要翻译： 在发动机的排气路径中的稀薄NOx捕集器的再生期间控制直接喷射汽油发动机的方法包括确定当前空燃比并将当前空燃比与稀薄极限空燃比进行比较。 从精简分级发动机运行到丰富的均匀发动机运行的转变被延迟，直到目前的空燃比达到稀薄极限空燃比。

    Rough road detection system
    5.
    发明申请
    Rough road detection system 有权

    公开(公告)号：US20070095130A1

    公开(公告)日：2007-05-03

    申请号：US11263174

    申请日：2005-10-31

    申请人： Tameem Assaf ,  David Mathews ,  Sanjeev Naik

    发明人： Tameem Assaf ,  David Mathews ,  Sanjeev Naik

    IPC分类号： B23Q17/09

    CPC分类号： G01M15/11 ,  B60T2210/14

    摘要： A rough road detection system includes a collection module, a statistical module, and a comparison module. The collection module collects samples from a vibration sensitive signal. The statistical module removes a periodic anomaly from the samples and removes a random anomaly from the samples with a filter having a filter coefficient based on an engine speed signal. In addition, the statistical module calculates a statistical signal based on the samples. The rough road detection system also includes a derivative module that calculates a first and second derivative based on a rate or time. The derivative module removes negative derivatives when the derivatives are calculated with respect to the rate and positive derivatives when the derivatives are calculated with respect to time. The comparison module determines whether a rough road condition exists based on the statistical signal or the first and second derivatives.

    Steer by wire motor control algorithm
    6.
    发明申请
    Steer by wire motor control algorithm 审中-公开
    转向线电机控制算法

    公开(公告)号：US20050274565A1

    公开(公告)日：2005-12-15

    申请号：US10864671

    申请日：2004-06-09

    申请人： Randall Greenwell ,  David Cameron ,  Sanjeev Naik

    发明人： Randall Greenwell ,  David Cameron ,  Sanjeev Naik

    IPC分类号： B62D5/00

    CPC分类号： B62D5/006 ,  B62D5/003

    摘要： A steer by wire system for a vehicle that employs a steering torque assist to allow the vehicle operator to more easily steer the vehicle in the event of a steer by wire system fault. The steer by wire system includes a sensor that generates a signal indicative of the position of and torque applied to the steering wheel that is received by a controller. From the position signal, the controller controls the steering of the vehicle by a steering motor. A feedback motor provides counter-torque to the rotation of the steering wheel to simulate the turning of the vehicle wheels. If the steer by wire system fails, a clutch engages a mechanical linkage to allow the vehicle operator to control the vehicle steering by the steering wheel. The controller provides a motor drive signal to the feedback motor to provide the torque assist when the mechanical linkage is engaged.

    摘要翻译： 用于车辆的转向系统，其采用转向转矩辅助以允许车辆操作者在由于系统故障的转向的情况下更容易地引导车辆。 导线系统的转向装置包括一个传感器，该传感器产生指示由控制器接收的方向盘施加的位置和扭矩的信号。 控制器根据位置信号通过转向马达来控制车辆的转向。 反馈电机为方向盘的旋转提供反扭矩，以模拟车轮的转动。 如果导线系统转向失效，则离合器接合机械联动装置，以允许车辆操作者通过方向盘来控制车辆转向。 控制器向反馈电机提供电动机驱动信号，以在机械联动接合时提供转矩辅助。

    CONTINUOUS CYLINDER MISFIRE DETECTION METHOD
    7.
    发明申请
    CONTINUOUS CYLINDER MISFIRE DETECTION METHOD 有权
    连续气缸故障检测方法

    公开(公告)号：US20060282212A1

    公开(公告)日：2006-12-14

    申请号：US11151584

    申请日：2005-06-13

    申请人： Sanjeev Naik

    发明人： Sanjeev Naik

    IPC分类号： G01M15/11

    CPC分类号： G01L23/221 ,  G01M15/06 ,  G01M15/11

    摘要： A method and system for detection of continuous single cylinder misfire, by more completely analyzing an estimated periodic sequence of reference period signals, and comparing the periodic sequence with a sample corresponding to an immediately prior revolution, is offered. Data occurring periodically, with a period of one revolution, are eliminated, whereas signals associated with a period of one engine cycle are enhanced. This comprises measuring a sequence of engine reference periods corresponding to a single engine revolution. Transient noise is removed. A first difference is calculated, and a disturbance sequence is estimated, correlatable to a single engine cycle. A difference is calculated and compared to a threshold. The threshold comprises an array of calibrated values, determined based upon engine operating speed and engine load.

    摘要翻译： 提供了一种用于检测连续单缸失火的方法和系统，通过更完全地分析估计的参考周期信号的周期性序列，并将周期序列与对应于先前的旋转的样本进行比较。 消除周期性地周期性地转动的数据，而与一个发动机循环周期相关联的信号被增强。 这包括测量与单个发动机转数相对应的发动机参考时段的序列。 瞬态噪音被消除。 计算第一个差异，估计干扰序列，与单个发动机循环相关。 计算差额并与阈值进行比较。 阈值包括基于发动机操作速度和发动机负载确定的校准值阵列。

    Vehicle control system and method
    8.
    发明申请
    Vehicle control system and method 有权
    车辆控制系统及方法

    公开(公告)号：US20050228546A1

    公开(公告)日：2005-10-13

    申请号：US10823170

    申请日：2004-04-13

    申请人： Sanjeev Naik ,  Pradyumna Mishra ,  Mark Howell ,  Rami Debouk ,  Mutasim Salman

    发明人： Sanjeev Naik ,  Pradyumna Mishra ,  Mark Howell ,  Rami Debouk ,  Mutasim Salman

    IPC分类号： B60T8/00 ,  B60T8/88 ,  B60W50/02 ,  B62D5/00 ,  B62D6/00 ,  G06F17/00

    CPC分类号： B60W50/023 ,  B60T8/885 ,  B60T2270/413 ,  B62D5/001

    摘要： A control system and method for use in vehicles, such as automotive vehicles. The control system and method is particularly adapted for use in vehicles having by-wire control systems. The control system uses three system controllers. Each of the controllers is adapted to receive redundant control inputs from at least one input device, such as a steering actuator, an accelerator actuator and a brake actuator. Each controller is adapted to receive a different unprocessed actuator sensor signal and a processed actuator sensor signal which are associated with the input device. Each controller may also be adapted to receive a sensor status signal which is also associated with the input device. In accordance with the method of the invention, these signals may be used to determine a sensor signal which may be used as the basis for control of control systems or components in response to the input device. Depending on the status of these signals, the sensor signal used for control may comprise the processed sensor signal or a resolved sensor signal. The sensor signal used for control may be determined by implementing a voting process in conjunction with the controllers which utilizes both the unprocessed sensor signals and the processed sensor signals.

    摘要翻译： 用于诸如汽车的车辆的控制系统和方法。 控制系统和方法特别适用于具有线控制系统的车辆。 控制系统使用三个系统控制器。 每个控制器适于接收来自至少一个输入装置（例如转向致动器，加速器致动器和制动致动器）的冗余控制输入。 每个控制器适于接收与输入设备相关联的不同的未处理的致动器传感器信号和经处理的致动器传感器信号。 每个控制器还可以适于接收也与输入设备相关联的传感器状态信号。 根据本发明的方法，可以使用这些信号来确定传感器信号，该传感器信号可以用作响应于输入装置的控制系统或部件的控制的基础。 根据这些信号的状态，用于控制的传感器信号可以包括经处理的传感器信号或分辨的传感器信号。 用于控制的传感器信号可以通过结合使用未处理的传感器信号和处理的传感器信号的控制器实施投票过程来确定。