Diesel oxidation catalyst filter heating system
    21.
    发明授权
    Diesel oxidation catalyst filter heating system 有权
    柴油氧化催化剂过滤器加热系统

    公开(公告)号:US07654079B2

    公开(公告)日:2010-02-02

    申请号:US11593722

    申请日:2006-11-07

    IPC分类号: F01N3/00

    摘要: A system, method, and software that rapidly heats a diesel oxidation catalyst unit to an effective operating temperature at engine startup is disclosed. Upon ignition of an engine an electronic control unit is operable to lower a fresh air flow target value to a reduced fresh air flow target value as well as lower a valve opening limit of an exhaust gas recirculation valve to a reduced valve opening limit. The electronic control unit monitors a temperature value of a flow of exhaust entering the diesel oxidation catalyst unit until the temperature value reaches a first predetermined threshold value. After reaching the first predetermined threshold value, the electronic control unit causes the fuel system to set post-injection fueling to a predetermined post-injection fueling value until the temperature value of the flow of exhaust entering the diesel oxidation catalyst unit reaches a second predetermined threshold value.

    摘要翻译: 公开了一种将柴油机氧化催化剂单元快速加热到发动机启动时的有效工作温度的系统,方法和软件。 在发动机点火时,电子控制单元可操作以将新鲜空气流量目标值降低到减少的新鲜空气流量目标值,以及将排气再循环阀的阀开启极限降低到减小的阀开启极限。 电子控制单元监视进入柴油机氧化催化剂单元的排气流的温度值,直到温度值达到第一预定阈值。 在达到第一预定阈值之后,电子控制单元使燃料系统将后喷射加油设定到预定的后喷射加油值,直到进入柴油机氧化催化剂单元的排气的温度值达到第二预定阈值 值。

    System for controlling absorber regeneration
    22.
    发明授权
    System for controlling absorber regeneration 有权
    控制吸收器再生的系统

    公开(公告)号:US07654076B2

    公开(公告)日:2010-02-02

    申请号:US11593803

    申请日:2006-11-07

    申请人: Joan M. Wills

    发明人: Joan M. Wills

    IPC分类号: F01N3/00

    摘要: A system, method, and software for controlling regeneration and desulfurization of a NOx adsorber is disclosed. An electronic control unit is connected with an engine for selectively controlling operation of the engine between a rich operating mode and a lean operating mode. A NOx adsorber is in fluid communication with a flow of exhaust from the engine. A NOx adsorber manager module is executable by the electronic control unit to determine the need to operate in a de-NOx mode or a de-SOx mode. If the NOx adsorber manager module determines a need exists to operate in the de-NOx mode and the de-SOx mode at the same time, the NOx adsorber manager module executes the de-SOx mode.

    摘要翻译: 公开了一种用于控制NOx吸附器的再生和脱硫的系统,方法和软件。 电子控制单元与发动机连接,用于在丰富的运行模式和精益运行模式之间选择性地控制发动机的运转。 NOx吸附器与来自发动机的排气流体连通。 NOx吸附器管理器模块可由电子控制单元执行以确定需要在脱NOx模式或脱SOX模式下操作。 如果NOx吸附器管理器模块确定需要同时在脱NOx模式和脱SOX模式下操作,则NOx吸附器管理器模块执行去SOx模式。

    System for controlling adsorber regeneration
    24.
    发明申请
    System for controlling adsorber regeneration 有权
    控制吸附器再生的系统

    公开(公告)号:US20080109146A1

    公开(公告)日:2008-05-08

    申请号:US11593830

    申请日:2006-11-07

    IPC分类号: F02D41/02 F01N3/00

    摘要: A system, method, and software for regenerating an adsorber connected with a flow of exhaust from an engine. An open-loop control module for ramping up and maintaining a temperature value of an adsorber to a regeneration temperature value by controlling an air fuel ratio value of an engine to operate at an open-loop controlled variable duty cycle. A closed-loop control module is operable to take control from the open-loop control module to maintain the adsorber at the regeneration temperature value if the temperature value of the adsorber deviates from the regeneration temperature value by controlling the air fuel ratio value of the engine to operate at a closed-loop controlled variable duty cycle.

    摘要翻译: 一种用于再生与来自发动机的排气流相连的吸附器的系统,方法和软件。 一种开环控制模块,用于通过控制发动机的空燃比值在开环控制的可变占空比下工作来将吸附器的温度值升高并保持到再生温度值。 如果吸附器的温度值通过控制发动机的空燃比值而偏离再生温度值,则闭环控制模块可操作以从开环控制模块控制以将吸附器维持在再生温度值 以闭环控制的可变占空比运行。

    Diesel oxidation catalyst filter heating system
    25.
    发明申请
    Diesel oxidation catalyst filter heating system 有权
    柴油氧化催化剂过滤器加热系统

    公开(公告)号:US20080104945A1

    公开(公告)日:2008-05-08

    申请号:US11593722

    申请日:2006-11-07

    IPC分类号: F02B33/44

    摘要: A system, method, and software that rapidly heats a diesel oxidation catalyst unit to an effective operating temperature at engine startup is disclosed. Upon ignition of an engine an electronic control unit is operable to lower a fresh air flow target value to a reduced fresh air flow target value as well as lower a valve opening limit of an exhaust gas recirculation valve to a reduced valve opening limit. The electronic control unit monitors a temperature value of a flow of exhaust entering the diesel oxidation catalyst unit until the temperature value reaches a first predetermined threshold value. After reaching the first predetermined threshold value, the electronic control unit causes the fuel system to set post-injection fueling to a predetermined post-injection fueling value until the temperature value of the flow of exhaust entering the diesel oxidation catalyst unit reaches a second predetermined threshold value.

    摘要翻译: 公开了一种将柴油机氧化催化剂单元快速加热到发动机启动时的有效工作温度的系统,方法和软件。 在发动机点火时,电子控制单元可操作以将新鲜空气流量目标值降低到减少的新鲜空气流量目标值,以及将排气再循环阀的阀开启极限降低至减小的阀开启极限。 电子控制单元监视进入柴油机氧化催化剂单元的排气流的温度值,直到温度值达到第一预定阈值。 在达到第一预定阈值之后,电子控制单元使燃料系统将后喷射加油设定到预定的后喷射加油值,直到进入柴油机氧化催化剂单元的排气的温度值达到第二预定阈值 值。