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1. 发明授权

US07104260B2 EGR control unit and method for an internal combustion engine 有权
公开(公告)号：US07104260B2
公开(公告)日：2006-09-12
申请号：US11159403
申请日：2005-06-23
申请人： Takashi Nakazawa , Takanobu Ikeuchi
发明人： Takashi Nakazawa , Takanobu Ikeuchi
IPC分类号： F02M25/07 , F02D41/18 , F16K31/04
CPC分类号： F02D41/005 , F02D41/1498 , F02D41/2464 , Y02T10/47
摘要： An EGR control method and unit for an internal combustion engine includes an EGR passage configured to recirculate a portion of an exhaust gas from an exhaust system to an intake system. An EGR valve, disposed in the EGR passage, is configured to control an amount of EGR, and an index calculator is configured to calculate a surge-increase index according to a variance in rotation of the engine. A detector is configured to compare the surge-increase index with a determination threshold to detect a surge increase, an adjuster is configured to adjust a correction value relative to a target amount of the EGR according to an output of the detector, and a target-amount calculator is configured to calculate the target amount of the EGR by subtracting the correction value from a reference target amount of the EGR determined based upon an engine operating condition.

2. 发明申请

US20060102148A1 EGR control unit and method for an internal combustion engine 有权
标题翻译： EGR控制单元和内燃机的方法
公开(公告)号：US20060102148A1
公开(公告)日：2006-05-18
申请号：US11159403
申请日：2005-06-23
申请人： Takashi Nakazawa , Takanobu Ikeuchi
发明人： Takashi Nakazawa , Takanobu Ikeuchi
IPC分类号： F02M7/00 , F02M25/07
CPC分类号： F02D41/005 , F02D41/1498 , F02D41/2464 , Y02T10/47
摘要： An EGR control method and unit for an internal combustion engine includes an EGR passage configured to recirculate a portion of an exhaust gas from an exhaust system to an intake system. An EGR valve, disposed in the EGR passage, is configured to control an amount of EGR, and an index calculator is configured to calculate a surge-increase index according to a variance in rotation of the engine. A detector is configured to compare the surge-increase index with a determination threshold to detect a surge increase, an adjuster is configured to adjust a correction value relative to a target amount of the EGR according to an output of the detector, and a target-amount calculator is configured to calculate the target amount of the EGR by subtracting the correction value from a reference target amount of the EGR determined based upon an engine operating condition.
摘要翻译：用于内燃机的EGR控制方法和单元包括：EGR通路，其构造成将废气的一部分从排气系统再循环到进气系统。设置在EGR通路中的EGR阀被配置为控制EGR量，并且指标计算器被配置为根据发动机的旋转方差来计算喘振增加指数。检测器被配置为将喘振增加指数与确定阈值进行比较以检测浪涌增加，调整器被配置为根据检测器的输出来调整相对于目标量的EGR的校正值，量计算器被配置为通过从基于发动机操作条件确定的EGR的参考目标量中减去校正值来计算EGR的目标量。

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