The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2015
Filed:
Jun. 30, 2011
Keith E. Moravec, Downers Grove, IL (US);
Gary R. Svihla, Burr Ridge, IL (US);
Ajay Patel, Joliet, IL (US);
Keith E. Moravec, Downers Grove, IL (US);
Gary R. Svihla, Burr Ridge, IL (US);
Ajay Patel, Joliet, IL (US);
Electro-Motive Diesel, Inc., LaGrange, IL (US);
Abstract
A two-stroke uniflow scavenged diesel engine system including an exhaust gas recirculation (EGR) system is described for reducing NOemissions and achieving desired fuel economy by recirculating exhaust gas through the engine. More specifically, the present invention is directed to a pressure balance exhaust gas recirculation (EGR) assembly for a two-stroke locomotive diesel engine having an EGR system. The present pressure balance EGR assembly includes an EGR module adapted to define a space between the external housing wall of the DOC housing and the inner wall of the EGR module housing and a space between the external wall of the DPF housing and the inner wall of the EGR module housing. One side of each space is confined by a flange-gasket arrangement, whereas the other side of the space is in open communication with the outlet of the respective DOC or DPF such that a portion of the exhaust fills each space. As a result of this configuration, pressure between each space and the pressure in the DOC or DPF, respectively, are about equal. As a result, internal exhaust pressure which the DOC and DPF components are subjected to is balanced by the external pressure provided by the present disclosure arrangement.