公开(公告)号：US20130061831A1

公开(公告)日：2013-03-14

申请号：US13231106

申请日：2011-09-13

申请人： GURPREET GAMBHIR ,  RAMMOHAN SANKAR ,  TRAVIS BARNES ,  ZENEBE GETE

发明人： GURPREET GAMBHIR ,  RAMMOHAN SANKAR ,  TRAVIS BARNES ,  ZENEBE GETE

IPC分类号： F02B47/08 ,  G06F19/00

CPC分类号： F02B47/08 ,  F01N3/00 ,  F02D41/0072 ,  F02D2021/083 ,  F02M26/43 ,  G06F19/00 ,  Y02T10/121 ,  Y02T10/47

摘要： A system and method for measuring an EGR flow rate for an engine having an EGR valve with a selectable EGR valve position and a venturi sensor situated to take a differential pressure measurement relative to recirculated exhaust gas includes determining an EGR valve effective area based on the EGR valve position, determining a weighting factor based on the effective area, calculating a first EGR flow estimate based on the effective area, and calculating a second EGR flow estimate based on the differential pressure measurement of the venturi sensor. A final EGR flow rate is determined based on the weighting factor, the first EGR flow estimate, and the second EGR flow estimate.

摘要翻译： 一种用于测量具有具有可选EGR阀位置的EGR阀和相对于再循环废气进行差压测量的文氏管传感器的发动机的EGR流量的系统和方法包括基于EGR确定EGR阀有效面积 阀位置，基于有效面积确定加权因子，基于有效面积计算第一EGR流量估计，以及基于文丘里管传感器的差压测量来计算第二EGR流量估计。 基于加权因子，第一EGR流量估计和第二EGR流量估计来确定最终EGR流量。

公开(公告)号：US20120325187A1

公开(公告)日：2012-12-27

申请号：US13165113

申请日：2011-06-21

申请人： RAMMOHAN SANKAR ,  TRAVIS BARNES

发明人： RAMMOHAN SANKAR ,  TRAVIS BARNES

IPC分类号： F02B47/08

CPC分类号： F02D41/0077 ,  F02B29/0406 ,  F02B37/007 ,  F02B47/08 ,  F02D41/0065 ,  F02M26/05 ,  F02M26/08 ,  F02M26/10 ,  F02M26/24 ,  F02M26/43 ,  F02M26/47 ,  Y02T10/47

摘要： An internal combustion engine and control system are provided having improved efficiency through improved exhaust flow control. The engine includes at least one bank of combustion cylinders and a respective exhaust manifold for conveying exhaust to the atmosphere. Further included is an exhaust gas restriction valve (ERV) associated with the exhaust manifold for selectively increasing backpressure on the associated bank of combustion cylinders and for redirecting a portion of the exhaust into an exhaust gas conditioning system for conditioning the portion of the exhaust and returning it to an air intake of the engine. An engine exhaust gas recirculation (EGR) valve in the exhaust gas recirculation system restricts the flow of conditioned exhaust, and an EGR flow controller operates the EGR valve in one of a substantially open and substantially closed condition and controls the flow of conditioned exhaust to the air intake by modulating the ERV.

摘要翻译： 通过改善排气流量控制，提供了一种提高效率的内燃机和控制系统。 发动机包括至少一组燃烧气缸和用于将废气输送到大气的各自的排气歧管。 还包括与排气歧管相关联的排气限制阀（ERV），用于选择性地增加相关联的燃烧缸组上的背压，并将排气的一部分重新定向到排气调节系统中，用于调节排气的一部分并返回 它到发动机的进气口。 排气再循环系统中的发动机废气再循环（EGR）阀限制经调节的排气的流量，并且EGR流量控制器将EGR阀以基本上打开和基本关闭的条件中的一个操作，并且将经调节的排气的流量控制到 通过调节ERV进气。