• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>SAE World Congress >The Effects of Two Catalyzed Particulate Filters on Exhaust Emissions from a Heavy-Duty Diesel Engine: Filtration and Particulate Matter Oxidation Characteristics Studied Experimentally and Using a 1-D, 2-Layer Model
【24h】

The Effects of Two Catalyzed Particulate Filters on Exhaust Emissions from a Heavy-Duty Diesel Engine: Filtration and Particulate Matter Oxidation Characteristics Studied Experimentally and Using a 1-D, 2-Layer Model

机译：两种催化颗粒过滤器对重型柴油发动机废气排放的影响：过滤和颗粒物质氧化特性，使用1-D，2层模型研究

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A 1-D, 2-layer model developed previously at MTU was used in this research to predict the pressure drop, filtration characteristics and various properties of the particulate filter and the particulate deposit layer. The model was used along with dilute emission data to characterize two catalyzed particulate filters (CPFs) having different catalyst loading and catalyst application processes. The model was calibrated and validated with data obtained from steady state experiments conducted using a 1995 Cummins M11-330E heavy-duty diesel engine with manual EGR with different fuels for the two different CPFs. The two different catalyzed particulate filters were CPF III (5 gms/ft{sup}3 Pt) and CPF V (50 gms/ft{sup}3 Pt). Both the CPFs had cordierite substrates with CPF III and CPF V had MEX and NEX catalyst type formulation respectively. The CPF III filter was catalyzed using a solution-impregnated process while the CPF V filter was catalyzed using a wash coat process. Experiments with the CPF III were conducted using conventional low sulfur fuel (CLSF) while ultra low sulfur fuel (ULSF) was used in conjunction with the CPF V. The model was used to predict the pressure drop, particulate mass retained inside the CPF, particulate mass filtration efficiency and concentration downstream of the CPFs with good agreement between the experimental and simulated results. Emissions characterization experiments were conducted for the CPFs in the dilute exhaust at rated speed (1800 rpm) and 25, 50, 75 and 100% load conditions designated as Modes 11, 10, 9 and 8 respectively. The emissions characterized included, 1) TPM, SOL, SOF and sulfates using the gravimetric method, 2) TC, EC and OC using the thermal optical method (TOM), 3) gas phase emissions and 4) particle. The two CPFs were compared based on the raw experimental, dilute experimental and simulated results to determine the influence of the differences in the CPFs on their performance.
机译：在本研究中使用先前在MTU的1-D，2层模型用于预测颗粒过滤器和颗粒沉积物的压降，过滤特性和各种性质。使用稀释排放数据使用该模型，以表征具有不同催化剂负载和催化剂施用方法的两个催化颗粒过滤器（CPF）。该模型被校准并验证了从使用1995康明斯M11-330E重型柴油发动机进行的稳态实验获得的数据，手动EGR为两种不同的CPF具有不同的燃料。两种不同的催化颗粒过滤器是CPF III（5GM / FT {SUP} 3 PT）和CPF V（50 gms / ft {sup} 3 pt）。 CPF两者都有堇青石底物，CPF III和CPF V分别具有MEX和NEX催化剂型制剂。使用溶液浸渍过程催化CPF III过滤器，同时使用洗涤涂层催化CPF V过滤器。使用常规的低硫燃料（CLSF）进行CPF III的实验，同时结合CPF V使用超低硫燃料（ULSF）。该模型用于预测压降，颗粒物质在CPF内保留，颗粒状物质在实验和模拟结果之间具有良好的协议，CPF下游的质量过滤效率和浓度。在额定速度（1800rpm）和25,50,75和100％载荷条件下，分别指定为模式11,10,9和8的稀释排气中的CPF的排放表征实验。用热光学方法（汤姆），3）气相排放和4）颗粒，使用热光学方法（汤姆），3）气相排放和4）颗粒，其特征在于，1）TPM，SOL，SOF和硫酸盐，2）TC，EC和OC。基于原始实验，稀释实验和模拟结果进行比较两个CPF，以确定CPFS对其性能差异的影响。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号