-
1.发明授权公开(公告)号：US06216460B1
公开(公告)日：2001-04-17
申请号：US09663054
申请日：2000-09-15
IPC分类号： F02M2507
CPC分类号： F02B33/00 , F02B29/0406 , F02B37/00 , F02B2075/025 , F02M26/05 , F02M26/08 , F02M26/23 , F02M26/34 , F02M26/40 , Y02T10/144
摘要： An exhaust gas recirculation and control system is provided for an internal combustion engine, wherein a portion of engine exhaust gas flow is recirculated through an EGR duct to engine intake air. The recirculated exhaust gas is pumped through the EGR duct by an EGR compressor driven by a dedicated EGR drive that is independently controllable. Because the EGR drive is independently powered and controlled, the EGR flow rate capacity of the system is not dictated by, or limited, by factors such as engine exhaust flow rate. A controller modulates power delivery to the drive means in response to at least one operating condition parameter in order to achieve a desired EGR flow rate. In order to further optimize efficiency, the EGR compressor is preferably a discrete displacement pump which is controllably drivable in a pulse-capture mode, wherein each intake of the EGR compressor is timed synchronously with exhaust pulses in the exhaust manifold.
摘要翻译： 提供了一种用于内燃机的排气再循环和控制系统，其中发动机废气流的一部分通过EGR管道再循环到发动机进气。 再循环废气通过由独立可控制的专用EGR驱动器驱动的EGR压缩机泵送通过EGR管道。 由于EGR驱动是独立供电和控制的，系统的EGR流量容量不受发动机排气流量等因素的限制。 控制器响应于至少一个操作条件参数来调制对驱动装置的功率传递，以便实现期望的EGR流量。 为了进一步优化效率，EGR压缩机优选是在脉冲捕获模式下可控地驱动的离散排量泵，其中EGR压缩机的每个进气与排气歧管中的排气脉冲同步地定时。
-
2.发明授权公开(公告)号：US08863504B2
公开(公告)日：2014-10-21
申请号：US12894965
申请日：2010-09-30
CPC分类号： F01N3/208 , F01N11/00 , F01N2560/026 , F01N2610/02 , F01N2610/14 , F01N2900/1621 , F01N2900/1806 , Y02T10/24 , Y02T10/47
摘要： A method includes determining a first NOx conversion efficiency (η) value and determining that a diesel exhaust fluid (DEF) level has increased a threshold amount. Further, the method includes determining a second NOx conversion η value and comparing the first NOx conversion η value and the second NOx conversion η value, determining a NOx conversion η change in response to comparing, and determining a DEF quality indicator in response to the NOx conversion η change.
摘要翻译： 一种方法包括确定第一NOx转化效率（＆eegr）值并确定柴油机废气流体（DEF）水平已经增加了阈值量。 此外，该方法包括确定第二NOx转化＆ 价值和比较第一个NOx转化和eegr; 值和第二NOx转化率 价值，确定NOx转化率 响应于比较而改变，并且响应于NOx转化和确定DEF质量指标; 更改。
-
3.发明申请公开(公告)号：US20110209461A1
公开(公告)日：2011-09-01
申请号：US12894965
申请日：2010-09-30
CPC分类号： F01N3/208 , F01N11/00 , F01N2560/026 , F01N2610/02 , F01N2610/14 , F01N2900/1621 , F01N2900/1806 , Y02T10/24 , Y02T10/47
摘要： A method includes determining a first NOx conversion efficiency (η) value and determining that a diesel exhaust fluid (DEF) level has increased a threshold amount. Further, the method includes determining a second NOx conversion η value and comparing the first NOx conversion η value and the second NOx conversion η value, determining a NOx conversion η change in response to comparing, and determining a DEF quality indicator in response to the NOx conversion η change.
摘要翻译： 一种方法包括确定第一NOx转化效率（＆eegr）值并确定柴油机废气流体（DEF）水平已经增加了阈值量。 此外，该方法包括确定第二NOx转化＆ 价值和比较第一个NOx转化和eegr; 值和第二NOx转化率 价值，确定NOx转化率 响应于比较而改变，并且响应于NOx转化和确定DEF质量指标; 更改。
-
4.发明授权
公开(公告)号：US6164071A
公开(公告)日：2000-12-26
申请号：US925579
申请日：1997-09-08
CPC分类号： F02B33/00 , F02B29/0406 , F02B37/00 , F02B2075/025 , F02M26/05 , F02M26/08 , F02M26/23 , F02M26/34 , F02M26/40 , Y02T10/144
摘要： An exhaust gas recirculation and control system is provided for an internal combustion engine, wherein a portion of engine exhaust gas flow is recirculated through an EGR duct to engine intake air. The recirculated exhaust gas is pumped through the EGR duct by an EGR compressor driven by a dedicated EGR drive that is independently controllable. Because the EGR drive is independently powered and controlled, the EGR flow rate capacity of the system is not dictated by, or limited, by factors such as engine exhaust flow rate. A controller modulates power delivery to the drive means in response to at least one operating condition parameter in order to achieve a desired EGR flow rate. In order to further optimize efficiency, the EGR compressor is preferably a discrete displacement pump which is controllably drivable in a pulse-capture mode, wherein each intake of the EGR compressor is timed synchronously with exhaust pulses in the exhaust manifold.
摘要翻译： 提供了一种用于内燃机的排气再循环和控制系统，其中发动机废气流的一部分通过EGR管道再循环到发动机进气。 再循环废气通过由独立可控制的专用EGR驱动器驱动的EGR压缩机泵送通过EGR管道。 由于EGR驱动是独立供电和控制的，系统的EGR流量容量不受发动机排气流量等因素的限制。 控制器响应于至少一个操作条件参数来调制对驱动装置的功率传递，以便实现期望的EGR流量。 为了进一步优化效率，EGR压缩机优选是在脉冲捕获模式下可控地驱动的离散排量泵，其中EGR压缩机的每个进气与排气歧管中的排气脉冲同步地定时。
-
公开(公告)号：US06216461B1
公开(公告)日：2001-04-17
申请号：US09663090
申请日：2000-09-15
IPC分类号： F02M2507
CPC分类号： F02B33/00 , F02B29/0406 , F02B37/00 , F02B2075/025 , F02M26/05 , F02M26/08 , F02M26/23 , F02M26/34 , F02M26/40 , Y02T10/144
摘要： An exhaust gas recirculation and control system is provided for an internal combustion engine, wherein a portion of engine exhaust gas flow is recirculated through an EGR duct to engine intake air. The recirculated exhaust gas is pumped through the EGR duct by an EGR compressor driven by a dedicated EGR drive that is independently controllable. Because the EGR drive is independently powered and controlled, the EGR flow rate capacity of the system is not dictated by, or limited, by factors such as engine exhaust flow rate. A controller modulates power delivery to the drive means in response to at least one operating condition parameter in order to achieve a desired EGR flow rate. In order to further optimize efficiency, the EGR compressor is preferably a discrete displacement pump which is controllably drivable in a pulse-capture mode, wherein each intake of the EGR compressor is timed synchronously with exhaust pulses in the exhaust manifold.
-
公开(公告)号：US06837227B2
公开(公告)日：2005-01-04
申请号：US09774897
申请日：2001-01-31
申请人： Salim A. Jaliwala , Paul R. Miller , Larry J. Brackney , Thomas A. Dollmeyer , Chuan He , George Brunemann , John F. Wright , Stephen J. Charlton
发明人： Salim A. Jaliwala , Paul R. Miller , Larry J. Brackney , Thomas A. Dollmeyer , Chuan He , George Brunemann , John F. Wright , Stephen J. Charlton
CPC分类号： F02D41/0072 , F02B29/0406 , F02B29/0493 , F02M26/05 , F02M26/23 , F02M26/33 , F02M26/47 , Y02T10/47
摘要： A system is disclosed for estimating the mass flow of recirculated exhaust gas (EGR) from an exhaust manifold to an intake manifold of an internal combustion engine via an EGR conduit disposed therebetween and a fraction of EGR attributable to a mass of charge flow entering the intake manifold. An engine controller is responsive to current values of various combinations of the engine exhaust temperature (ETE), intake manifold pressure (IMP), differential pressure (ΔP) across an EGR valve, and EGR valve position (EGRP) to determine an estimate of EGR mass flow. The controller is further operable to estimate EGR fraction as a function of the estimated EGR mass flow value, mass flow of charge entering the intake manifold, and engine speed.
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.012 秒)
