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    Fuel control compensation for secondary air system flow variation
    1.
    发明申请
    Fuel control compensation for secondary air system flow variation 有权
    二次空气系统流量变化的燃油控制补偿

    公开(公告)号：US20060042232A1

    公开(公告)日：2006-03-02

    申请号：US10918581

    申请日：2004-08-13

    申请人： Stephen Fulcher ,  Richard Jess ,  Patrick Risse ,  Stuart Smith ,  James Eng

    发明人： Stephen Fulcher ,  Richard Jess ,  Patrick Risse ,  Stuart Smith ,  James Eng

    IPC分类号： F01N3/00

    CPC分类号： F02D21/10

    摘要： An engine control system and method maintains an optimum exhaust fuel to air ratio in an internal combustion engine. A secondary air injection (SAI) pressure is measured in an SAI system. The SAI pressure measurement is converted into an SAI flow value. A fuel compensation value is obtained based on the SAI flow value. Fuel delivery is compensated to the engine based on the fuel compensation value. In a second embodiment, the fuel compensation value is obtained based on the SAI pressure measurement. Fuel delivery is compensated to the engine based on the fuel compensation value. In a third embodiment, a primary flow value is calculated at an air intake of the engine. A fuel compensation value is calculated based on the SAI flow and primary flow values. Fuel delivery to the engine is compensated based on the fuel compensation value.

    摘要翻译： 发动机控制系统和方法在内燃机中保持最佳排气燃料与空气的比例。 在SAI系统中测量二次空气喷射（SAI）压力。 将SAI压力测量值转换为SAI流量值。 基于SAI流量值获得燃料补偿值。 基于燃料补偿值对发动机进行燃料补给。 在第二实施例中，基于SAI压力测量获得燃料补偿值。 基于燃料补偿值对发动机进行燃料补给。 在第三实施例中，在发动机的进气口处计算主流量值。 基于SAI流量和主流量值计算燃料补偿值。 基于燃料补偿值来补偿向发动机的输送。

    Diesel oxidation catalyst efficiency diagnostic method
    3.
    发明申请
    Diesel oxidation catalyst efficiency diagnostic method 有权
    柴油氧化催化剂效率诊断方法

    公开(公告)号：US20050279156A1

    公开(公告)日：2005-12-22

    申请号：US11098185

    申请日：2005-04-04

    申请人： Chuan He ,  Richard Jess ,  Jay Tolsma ,  John Van Gilder ,  Wenbo Wang

    发明人： Chuan He ,  Richard Jess ,  Jay Tolsma ,  John Van Gilder ,  Wenbo Wang

    IPC分类号： F01N3/035 ,  F01N11/00 ,  F01N13/02 ,  F02D41/02 ,  F02D41/40 ,  G01N33/497

    CPC分类号： F01N11/002 ,  F01N3/035 ,  F01N13/009 ,  F01N2550/02 ,  F01N2550/04 ,  F02D41/0235 ,  F02D41/405 ,  Y02T10/44 ,  Y02T10/47

    摘要： A diesel oxidation catalyst (DOC) testing system includes a DOC that is located in an exhaust system of a vehicle. A control module verifies proper operation of the DOC during a post-fuel injection process in an engine of the vehicle. The control module computes a predicted temperature of exhaust gases at an output of the DOC that corresponds with proper operation of the DOC during the post-fuel injection process, determines an actual temperature of the exhaust gases during the post-fuel injection process, and activates an alarm indicator when a difference between the predicted temperature and the actual temperature is greater than a first predetermined value. A first temperature sensor is located downstream from the DOC in the exhaust system. The first temperature sensor communicates with the control module, generates the actual temperature, and transmits the actual temperature to the control module.

    摘要翻译： 柴油氧化催化剂（DOC）测试系统包括位于车辆的排气系统中的DOC。 在车辆的发动机中的后燃料喷射过程中，控制模块验证DOC的正确操作。 控制模块计算在燃料喷射过程中DOC对应于DOC的适当操作的DOC输出处的废气的预测温度，确定后燃料喷射过程中废气的实际温度，并激活 当预测温度和实际温度之间的差大于第一预定值时的报警指示器。 第一温度传感器位于排气系统中DOC的下游。 第一个温度传感器与控制模块通信，产生实际温度，并将实际温度传送到控制模块。

    MODEL-BASED STATISTICAL PROCESS TO DETERMINE DIAGNOSTIC LIMITS IN A SENSOR POSITION SYSTEM FOR A TURBOCHARGER
    4.
    发明申请
    MODEL-BASED STATISTICAL PROCESS TO DETERMINE DIAGNOSTIC LIMITS IN A SENSOR POSITION SYSTEM FOR A TURBOCHARGER 有权
    基于模型的统计过程，用于确定涡轮增压器传感器位置系统中的诊断极限

    公开(公告)号：US20060257237A1

    公开(公告)日：2006-11-16

    申请号：US11129854

    申请日：2005-05-16

    申请人： Mike McDonald ,  Richard Jess

    发明人： Mike McDonald ,  Richard Jess

    IPC分类号： F04D27/02

    CPC分类号： F04D27/001 ,  F01D17/16 ,  F02B37/24 ,  F02C9/00 ,  F04D27/0246 ,  F05D2220/40

    摘要： A method of determining diagnostic limits for a vane position sensing system installed in a variable nozzle turbocharger (VNT). The method includes defining mechanical input probability distribution functions (PDFs) of the VNT, describing the vane position sensing system in terms of component models and defining component parameter PDFs for parameters associated with the component models. Vane position signal PDFs based are generated on the mechanical input PDFs, the component models and the component parameter PDFs, and diagnostic limits are set for the vane position sensing system based on the vane position signal PDFs.

    摘要翻译： 一种确定安装在可变喷嘴涡轮增压器（VNT）中的叶片位置检测系统的诊断限值的方法。 该方法包括定义VNT的机械输入概率分布函数（PDF），根据组件模型描述叶片位置感测系统，并定义与组件模型相关的参数的组件参数PDF。 叶片位置信号基于PDF的叶片位置信号PDF，在机械输入PDF，部件型号和部件参数PDF上生成叶片位置传感系统，并根据叶片位置信号PDF设置诊断限制。