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    Cost structure method including fuel economy and engine emission considerations
    53.
    发明授权
    Cost structure method including fuel economy and engine emission considerations 有权
    成本结构方法包括燃油经济性和发动机排放考虑

    公开(公告)号：US07454278B2

    公开(公告)日：2008-11-18

    申请号：US11546801

    申请日：2006-10-12

    申请人： Anthony H. Heap ,  William R. Cawthorne ,  Gregory A. Hubbard

    发明人： Anthony H. Heap ,  William R. Cawthorne ,  Gregory A. Hubbard

    IPC分类号： G06F19/00 ,  F02D41/04

    CPC分类号： F02D41/1406 ,  F02D2200/1006 ,  F02D2250/18

    摘要： A powertrain control selects engine operating points in accordance with power loss minimization controls. Power loss contributions come from a variety of sources including engine power losses. Engine power losses are determined in accordance with engine operating metrics such as power production per unit fuel consumption and power production per unit emission production. Engine power losses are combined in accordance with assigned weighting into a single engine power loss term for use in the power loss minimization control and operating point selection.

    摘要翻译： 动力总成控制根据功率损耗最小化控制选择发动机工作点。 功率损耗贡献来自各种来源，包括发动机功率损失。 发动机功率损失根据发动机运行指标确定，例如每单位燃料消耗的功率生产和每单位排放产量的发电量。 发动机功率损耗根据分配的权重组合成单个发动机功率损耗项，用于功率损耗最小化控制和工作点选择。

    Multi-stage compression ignition engine start
    59.
    发明授权
    Multi-stage compression ignition engine start 有权
    多级压缩点火发动机起动

    公开(公告)号：US07028657B2

    公开(公告)日：2006-04-18

    申请号：US10846013

    申请日：2004-05-14

    申请人： Jy-Jen F. Sah ,  Gregory A. Hubbard ,  William R. Cawthorne ,  Xuefeng T. Tao ,  Todd M. Steinmetz

    发明人： Jy-Jen F. Sah ,  Gregory A. Hubbard ,  William R. Cawthorne ,  Xuefeng T. Tao ,  Todd M. Steinmetz

    IPC分类号： F02N11/00

    CPC分类号： F02D41/064 ,  F02N11/08 ,  F02N2300/102

    摘要： A powertrain includes a diesel compression engine and an electric machine operatively coupled thereto and effective to rotate the engine during engine cranking. Cold engine cranking is accomplished in a staged manner including a first stage wherein the engine is cranked to a first speed below the resonant speed of the coupled engine and electric machine combination for a first duration and thereafter cranked to a second speed above the resonant speed for a second duration. Transition out of cranking at the first and second speeds is accomplished when relative combustion stability is demonstrated. Cranking at the first or second speed is aborted when excessive crank times or if low battery voltages are observed. A third stage is included wherein the engine is cranked to a third speed below the engine idle speed. Transition out of cranking at the third speed is accomplished when relative combustion stability is demonstrated, whereafter normal engine control takes over.

    摘要翻译： 动力系包括柴油压缩发动机和可操作地联接到其上的电机，并且在发动机起动期间有效地使发动机旋转。 冷发动机起动以分阶段方式实现，包括第一阶段，其中发动机起动至低于联合发动机和电机组合的共振速度的第一速度，并且之后起动至高于谐振速度的第二速度 第二个持续时间。 当相对燃烧稳定性得到证实时，可以以第一和第二速度转换起动。 在超过曲柄时间或观察到电池电压不足时，以第一或第二速度起动。 包括第三级，其中发动机起动至低于发动机怠速转速的第三速度。 当相对燃烧稳定性得到证明时，在第三速度下转变为起动，此后正常的发动机控制接管。