Implementation and analysis of reverse breathing, rebreathing and cylinder deactivation for aftertreatment thermal management and overall efficiency benefit on diesel engines
Abstract
In order to meet stringent emissions regulations set by the Environment Protection Agency, diesel engine manufacturers install exhaust aftertreatment systems that reduce the tailpipe emissions. At low temperatures (usually below 200C), these systems lose their eectiveness, resulting in higher system out emissions. This problem arises during prolonged low load operation such as idling, and during cold start. Using the variable valve actuation for implementing reverse breathing, rebreathing, and cylinder deactivation (CDA) has been proposed as a means to elevate exhaust gas temperatures. This thesis discusses a research eort focused on reverse, rebreathing and CDA as potential solutions for aftertreatment thermal management without any fueling penalty. (Abstract shortened by ProQuest.)
Degree
M.S.M.E.
Advisors
Shaver, Purdue University.
Subject Area
Mechanical engineering
Off-Campus Purdue Users:
To access this dissertation, please log in to our
proxy server.