公开(公告)号：WO2007126592A1

公开(公告)日：2007-11-08

申请号：PCT/US2007/006485

申请日：2007-03-14

Applicant: CATERPILLAR INC. ,  EASLEY, JR., William, L. ,  VERKIEL, Maarten ,  STRAUSER, Aaron, D. ,  DRISCOLL, James, J. ,  ROBEL, Wade, J.

Inventor： EASLEY, JR., William, L. ,  VERKIEL, Maarten ,  STRAUSER, Aaron, D. ,  DRISCOLL, James, J. ,  ROBEL, Wade, J.

IPC: F01N3/035 ,  F01N3/08 ,  F01N9/00 ,  F01N3/025 ,  F01N3/027

CPC classification number: F01N3/027 ,  F01N3/025 ,  F01N3/0821 ,  F01N13/009 ,  F01N2250/02 ,  F01N2430/00

Abstract: An exhaust treatment system (20) is provided. The system may include a particulate trap (34) configured to remove one or more types of particulate matter from an exhaust flow of an engine (18). The system may also include a catalyst (32) configured to chemically alter at least one component of the exhaust flow. Further, the system may include an exhaust conduit (26) configured to direct the exhaust flow from the engine to the particulate trap and the catalyst. In addition, the exhaust treatment system may include a heating system (38) configured to maintain the temperature of the catalyst above a first predetermined temperature. The heating system may also be configured to periodically raise the temperature of the particulate trap above a higher, second predetermined temperature to thereby effectuate a regeneration of the particulate trap by oxidizing particulate matter accumulated in the particulate trap.

Abstract translation: 提供排气处理系统（20）。 该系统可以包括被配置成从发动机（18）的排气流中去除一种或多种类型的颗粒物质的颗粒捕集器（34）。 该系统还可以包括构造成化学改变排气流的至少一个组分的催化剂（32）。 此外，该系统可以包括排气导管（26），该排气导管（26）构造成将来自发动机的排气流引导到颗粒捕集器和催化剂。 此外，排气处理系统可以包括被配置为将催化剂的温度保持在第一预定温度以上的加热系统（38）。 加热系统还可以被配置为周期性地将颗粒捕集器的温度升高到更高的第二预定温度以上，从而通过氧化颗粒捕集器中积聚的颗粒物质来实现颗粒捕集器的再生。

公开(公告)号：WO2008005382A1

公开(公告)日：2008-01-10

申请号：PCT/US2007/015230

申请日：2007-06-29

Applicant: CATERPILLAR INC. ,  STRAUSER, Aaron, D.

Inventor： STRAUSER, Aaron, D.

IPC: F02M25/07

CPC classification number: F02B29/0412 ,  F02B29/0425 ,  F02B37/013 ,  F02M26/07 ,  F02M26/08 ,  F02M26/09 ,  F02M26/17 ,  F02M26/34 ,  F02M26/35 ,  F02M26/37 ,  Y02T10/146

Abstract: A system for recirculating exhaust gas in an engine system (100) includes a turbocharger and an exhaust gas recirculation system. The turbocharger (137) includes a turbine (133) driven by the exhaust gas from an engine, and a compressor operatively connected to the turbine. The compressor includes an air inlet and a diffuser portion (166) located downstream of the air inlet (145). The exhaust gas recirculation system (112) includes a fluid passage (180) having an inlet fluidly connected to an outlet of the engine, and an outlet fluidly connected to the diffuser portion of the compressor and located downstream of the air inlet of the compressor.

Abstract translation: 用于在发动机系统（100）中再循环废气的系统包括涡轮增压器和废气再循环系统。 涡轮增压器（137）包括由来自发动机的废气驱动的涡轮机（133）和可操作地连接到涡轮机的压缩机。 压缩机包括空气入口和位于空气入口（145）下游的扩散器部分（166）。 废气再循环系统（112）包括流体通道（180），其具有流体连接到发动机的出口的入口和流体连接到压缩机的扩散器部分并且位于压缩机的空气入口下游的出口。