Diesel Engine Development for Low Emissions at GE Transportation
GE Transportation is in the process of updating its EVO and Powerhaul line of diesel engines to meet the requirements of EPA Tier 4 and EU Stage IIIB emissions standards. The base engine with the largest production volumes continues to be the locomotive version of the 12 cylinder EVO rated at 3375 kW. Additionally, in-line 6 and 8 cylinder and vee 12 and 16 cylinder versions of the EVO engine are under development to serve the marine market along with an update to the Powerhaul 16 cylinder engine for the European locomotive market. The EVO engine has been one of GE Transportation’s most successful products. Over 5000 engines have been built to date. The product line has been expanded to from its original offering to serve higher power applications and the marine market. This engine has also undergone a pervious emissions update to meet the requirements of EPA Tier 3 with the introduction of common rail and Miller Cycle. Tier 4 emission levels for U.S. locomotives present significant challenges in the reduction of NOx and particulate emissions compared to Tier 3. These challenges require the introduction of technologies such as Aftertreatment, Exhaust Gas Recirculation (EGR), Advanced Turbocharging, Aggressive Miller Cycle, Variable Valve Timing, and Higher Pressure Common Rail. This paper will cover the concept selection process by which these various technologies were evaluated and the selection of the best concept to serve GE Transportation’s customers. The selection process included a combination of modeling and single cylinder research engine testing to evaluate the various emission reduction technologies. The first field trials of the EPA Tier 4 compliant EVO engine are scheduled for spring of 2013.
Robert Mischler Paul Flynn
GE Transportation,USA
国际会议
上海
英文
1-8
2013-05-13（万方平台首次上网日期，不代表论文的发表时间）