公开(公告)号：US10746138B2

公开(公告)日：2020-08-18

申请号：US15967134

申请日：2018-04-30

Applicant: Progress Rail Locomotive Inc.

Inventor： Sudarshan Kedarnath Loya ,  Steven D. Johnson ,  Vijaya Kumar ,  Laura Elise Rasmussen ,  Adarsh Gopinathan Nair ,  Michael B. Goetzke

IPC: F01N3/04 ,  F02M26/29 ,  F01N3/02 ,  F28D21/00 ,  F28D7/16

Abstract: An EGR cooler may include an EGR cooler housing having top, bottom and side walls, inlet and outlet end walls disposed at opposite ends, and a longitudinal axis extending in a direction of exhaust gas flow from the inlet end to the outlet end. A plurality of cooling tubes extend through the EGR cooler between the top and bottom walls, and are arranged in a cooling tube array to form an exhaust gas receiving area at an upstream side of the cooling tube array proximate the inlet end wall so that exhaust gas flowing into the EGR cooler through an exhaust gas inlet opening will flow into the exhaust gas receiving area and then disperse through the cooling tube array. A pitch distance between the cooling tubes may be greater proximate the longitudinal axis than proximate the side walls to promote flow through, instead of around, the cooling tube array.

公开(公告)号：US20190331066A1

公开(公告)日：2019-10-31

申请号：US15967134

申请日：2018-04-30

Applicant: Progress Rail Locomotive Inc.

Inventor： Sudarshan Kedarnath Loya ,  Steven D. Johnson ,  Vijaya Kumar ,  Laura Elise Rasmussen ,  Adarsh Gopinathan Nair ,  Michael B. Goetzke

IPC: F02M26/29

Abstract: An EGR cooler may include an EGR cooler housing having top, bottom and side walls, inlet and outlet end walls disposed at opposite ends, and a longitudinal axis extending in a direction of exhaust gas flow from the inlet end to the outlet end. A plurality of cooling tubes extend through the EGR cooler between the top and bottom walls, and are arranged in a cooling tube array to form an exhaust gas receiving area at an upstream side of the cooling tube array proximate the inlet end wall so that exhaust gas flowing into the EGR cooler through an exhaust gas inlet opening will flow into the exhaust gas receiving area and then disperse through the cooling tube array. A pitch distance between the cooling tubes may be greater proximate the longitudinal axis than proximate the side walls to promote flow through, instead of around, the cooling tube array.