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    • 6. 发明授权
    • Method for improving regeneration of a catalytic diesel particulate filter
    • 改善催化柴油颗粒过滤器再生的方法
    • US07992381B2
    • 2011-08-09
    • US12011530
    • 2008-01-28
    • Tanto SugiartoJohn D. WilliamsThomas M. Harris
    • Tanto SugiartoJohn D. WilliamsThomas M. Harris
    • F01N3/00
    • F01N3/023F01N9/002Y02T10/47
    • A method for regeneration of a CDPF disposed in the exhaust stream of a diesel engine. The method includes a second phase operation following a first phase substantially as disclosed in the prior art. As the first phase ends, as indicated by a temperature sensor at the exit end of the CDPF, the temperature and oxygen content of the exhaust gas are increased at the entrance to the CDPF in an ensuing second stage. These increases cause oxidation of the soot remaining near the entrance and the sides of the CDPF, resulting in a cleaner and higher-capacity CDPF than is produced by a single-phase regeneration in the prior art. The sequential stages are implemented via an algorithm programmed into an Engine Control Module (ECM). A CDPF regenerated in accordance with the invention can have approximately 95% of its filtration capacity restored.
    • 一种设置在柴油发动机的排气流中的CDPF的再生方法。 该方法包括基本上如现有技术中所公开的第一阶段之后的第二阶段操作。 当第一相结束时,如在CDPF的出口端处的温度传感器所示,随后的第二阶段,排气的温度和氧含量在CDPF的入口处增加。 这些增加导致残留在CDPF的入口和侧面附近的烟灰的氧化,导致比现有技术中的单相再生产生的更清洁和更高容量的CDPF。 顺序阶段通过编程到发动机控制模块(ECM)中的算法来实现。 根据本发明再生的CDPF可以恢复约95%的过滤能力。
    • 9. 发明申请
    • Method for controlling catalyst and filter temperatures in regeneration of a catalytic diesel particulate filter
    • 控制催化柴油微粒过滤器再生催化剂和过滤器温度的方法
    • US20090188243A1
    • 2009-07-30
    • US12011536
    • 2008-01-28
    • John D. WilliamsTanto SugiartoGeorge N. Simopoulos
    • John D. WilliamsTanto SugiartoGeorge N. Simopoulos
    • F01N3/023F01N11/00
    • F01N3/023F01N9/002Y02T10/47
    • A system for managing regeneration of a CDPF in a diesel engine. The system determines volatility of the accumulated soot by a weighting/indexing method to select a regeneration control strategy that protects the CDPF from thermal damage. The system determines the mass of wet soot and dry soot accumulated over the previous driving cycle and selects a management strategy to control the rate of temperature increase and the thermal gradient imposed upon the filter. The wet soot percent is an index for setting the regeneration temperature control profile for an allowable total accumulated soot mass as a function of the accumulated wet soot. The method also scales the soot mass regeneration threshold value based upon wet soot accumulation and accumulation rate and provides an indicator of combustibility of the soot accumulation. The method provides a temperature ramp rate, total regeneration time, and exhaust oxygen level required to control regeneration.
    • 一种用于管理柴油发动机中的CDPF再生的系统。 该系统通过加权/索引方法确定积累的烟灰的挥发性,以选择保护CDPF免受热损伤的再生控制策略。 该系统确定在先前的驱动循环中累积的湿煤烟和干烟尘的质量,并选择管理策略来控制温度升高速率和施加在过滤器上的热梯度。 湿烟灰百分比是用于将再生温度控制曲线设置为允许的总累积烟灰质量作为累积湿烟灰的函数的指标。 该方法还基于湿烟灰积累和积累速率来缩放烟灰质量再生阈值,并提供烟灰积聚的可燃性指标。 该方法提供了控制再生所需的温度升高速率,总再生时间和排气氧气水平。
    • 10. 发明申请
    • Method for improving regeneration of a catalytic diesel particulate filter
    • 改善催化柴油颗粒过滤器再生的方法
    • US20090188241A1
    • 2009-07-30
    • US12011530
    • 2008-01-28
    • Tanto SugiartoJohn D. WilliamsThomas M. Harris
    • Tanto SugiartoJohn D. WilliamsThomas M. Harris
    • F01N3/023F01N11/00
    • F01N3/023F01N9/002Y02T10/47
    • A method for regeneration of a CDPF disposed in the exhaust stream of a diesel engine. The method includes a second phase operation following a first phase substantially as disclosed in the prior art. As the first phase ends, as indicated by a temperature sensor at the exit end of the CDPF, the temperature and oxygen content of the exhaust gas are increased at the entrance to the CDPF in an ensuing second stage. These increases cause oxidation of the soot remaining near the entrance and the sides of the CDPF, resulting in a cleaner and higher-capacity CDPF than is produced by a single-phase regeneration in the prior art. The sequential stages are implemented via an algorithm programmed into an Engine Control Module (ECM). A CDPF regenerated in accordance with the invention can have approximately 95% of its filtration capacity restored.
    • 一种设置在柴油发动机的排气流中的CDPF的再生方法。 该方法包括基本上如现有技术中所公开的第一阶段之后的第二阶段操作。 当第一相结束时,如在CDPF的出口端处的温度传感器所示,随后的第二阶段,排气的温度和氧含量在CDPF的入口处增加。 这些增加导致残留在CDPF的入口和侧面附近的烟灰的氧化,导致比现有技术中的单相再生产生的更清洁和更高容量的CDPF。 顺序阶段通过编程到发动机控制模块(ECM)中的算法来实现。 根据本发明再生的CDPF可以恢复约95%的过滤能力。