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    Internal combustion engine simulation and testing
    21.
    发明授权
    Internal combustion engine simulation and testing 有权
    内燃机模拟和试验

    公开(公告)号：US06708557B2

    公开(公告)日：2004-03-23

    申请号：US10075013

    申请日：2002-02-13

    申请人： John J. Moskwa ,  John L. Lahti

    发明人： John J. Moskwa ,  John L. Lahti

    IPC分类号： G01M1500

    CPC分类号： G01M15/044

    摘要： A dynamometer is coupled to a single cylinder version of a multi-cylinder engine. The dynamometer control system calculates the instantaneous dynamic torques (e.g., inertial, combustion, and/or other torques) that would normally be generated in the multi-cylinder engine. The control system then inputs the torque from the missing cylinders of the engine to the dynamometer, preferably by a hydraulic system capable of accurately applying these torque pulses. By inputting energy to the engine as well as receiving it, the single-cylinder engine can replicate the rapid transients that are experienced in multi-cylinder engine operation, and can therefore be made to have an instantaneous speed profile matching that of the multi-cylinder engine. This allows testing of the single-cylinder engine at all engine speeds (including very low speed operation, which has traditionally been problematic), and also allows transient speed and load testing on single-cylinder engines, where such testing has heretofore been infeasible. The dynamometer thereby expands use of simpler, more versatile, and less expensive single cylinder test engines in place of multi-cylinder test engines, thereby decreasing the time and cost of engine research efforts.

    摘要翻译： 测力计连接到单缸发动机的单缸版本。 测力计控制系统计算通常在多气缸发动机中产生的瞬时动态转矩（例如，惯性，燃烧和/或其他转矩）。 然后，控制系统优选地通过能够精确地施加这些扭矩脉冲的液压系统将来自发动机的缺失气缸的扭矩输入到测力计。 通过向发动机输入能量并接收它，单缸发动机可以复制在多缸发动机运行中经历的快速瞬变，因此可以使其具有与多缸相同的瞬时速度曲线 发动机。 这允许在所有发动机速度（包括传统上是有问题的极低速运行）下测试单缸发动机，并且还允许在单缸发动机上进行瞬时速度和负载测试，其中这种测试迄今为止是不可行的。 测功机从而扩大了使用更简单，更通用和更便宜的单缸测试发动机代替多气缸测试发动机，从而减少了发动机研究工作的时间和成本。

    HYBRID ACCESSORY POWER MODULE SHEDDING FOR HIGH VOLTAGE BATTERY PROTECTION
    25.
    发明申请
    HYBRID ACCESSORY POWER MODULE SHEDDING FOR HIGH VOLTAGE BATTERY PROTECTION 审中-公开
    用于高压电池保护的混合附件功率模块

    公开(公告)号：US20110144837A1

    公开(公告)日：2011-06-16

    申请号：US12634735

    申请日：2009-12-10

    申请人： Adam J. Heisel ,  John L. Lahti ,  Anthony H. Heap

    发明人： Adam J. Heisel ,  John L. Lahti ,  Anthony H. Heap

    IPC分类号： B60W20/00 ,  H02J7/04

    CPC分类号： B60W20/15 ,  B60K6/48 ,  B60L1/14 ,  B60L50/16 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  B60W30/188 ,  B60W30/1884 ,  B60W50/06 ,  H02J7/04 ,  Y02T10/6221 ,  Y02T10/6286 ,  Y02T10/70 ,  Y02T10/7077

    摘要： A method of controlling a hybrid powertrain of a vehicle includes lowering a target voltage set point of a low voltage battery to a temporary voltage set point to reduce the overall power required by the accessory power module when a requested voltage from a vehicle accessory draws the voltage of the low voltage battery below the target voltage set point. The temporary voltage set point gradually increases over time until equal to the target voltage set point, allowing sufficient time for a high voltage battery to provide the required power for the accessory power module or for an electric motor/generator to generate the current required by the accessory power module.

    摘要翻译： 一种控制车辆的混合动力系统的方法包括将低压电池的目标电压设定点降低到临时电压设定点，以便当来自车辆附件的请求电压消除电压时降低辅助功率模块所需的总功率 的低压电池低于目标电压设定点。 临时电压设定点随着时间逐渐增加直到目标电压设定点为止，允许高压电池足够的时间为附件电源模块或电动机/发电机提供所需的电力，以产生所需的电流 附件电源模块。

    Method for on-board diagnosis of cold start emissions reduction control strategy
    28.
    发明授权
    Method for on-board diagnosis of cold start emissions reduction control strategy 有权
    冷启动减排控制策略车载诊断方法

    公开(公告)号：US07630826B2

    公开(公告)日：2009-12-08

    申请号：US11673870

    申请日：2007-02-12

    申请人： Wenbo Wang ,  John L. Lahti ,  Christopher A Gillanders ,  Robert J. Genslak ,  John F. Van Gilder

    发明人： Wenbo Wang ,  John L. Lahti ,  Christopher A Gillanders ,  Robert J. Genslak ,  John F. Van Gilder

    IPC分类号： G06F19/00 ,  G01M15/10

    CPC分类号： F02D41/064 ,  F02D41/1497 ,  F02D41/22 ,  F02D2200/1004 ,  Y02T10/40

    摘要： A diagnostic cold start emissions control system for an internal combustion engine includes a control module having a calculated engine-out energy module, an engine-out energy residual module, and a diagnostic system evaluation module. The calculated engine-out energy module is in communication with the engine-out energy residual module and is configured to determine an operating engine-out energy flow based on an operating engine torque. The engine-out energy residual module is in communication with the diagnostic system evaluation module and is configured to determine an engine-out energy residual based on the determined engine-out energy flow and an expected engine-out energy flow. The diagnostic system evaluation module is configured to determine whether the determined engine-out energy residual meets a predetermined value indicative of proper cold start emissions control.

    摘要翻译： 用于内燃机的诊断冷启动排放控制系统包括具有计算的发动机输出能量模块，发动机输出能量残余模块和诊断系统评估模块的控制模块。 所计算的发动机输出能量模块与发动机输出能量残余模块通信，并且被配置为基于操作发动机扭矩来确定操作发动机输出的能量流。 发动机输出能量残余模块与诊断系统评估模块通信，并且被配置为基于所确定的发动机输出能量流和预期发动机输出能量流来确定发动机输出能量残余。 诊断系统评估模块被配置为确定确定的发动机输出能量残余是否满足指示适当的冷启动排放控制的预定值。