气候变化领域集成服务门户(CCPortal): Holistic Engine and EAT Development of Low NOXand CO2Concepts for HD Diesel Engine Applications

CCPortal

DOI	10.4271/2020-01-2092
	Holistic Engine and EAT Development of Low NOXand CO2Concepts for HD Diesel Engine Applications
	Kovacs D.; Mennig M.; Rezaei R.; Bertram C.
发表日期	2020
ISSN	1487191
期号	2020
英文摘要	The latest legislative tendencies for on-highway heavy duty vehicles in the United States such as the feasibility assessment of low NOX standards of CARB or EPA's memorandum forecast further tightening of the NOX emissions limits. In addition, the GHG Phase 2 legislation and also phased-in regulations in the EU enforce a continuous reduction in CO2 emissions resp. fuel consumption. In order to meet such low NOX emission limits, a rapid heat-up of the exhaust after-Treatment system (EATS) is inevitable. However, the required thermal management results in increased fuel consumption, i.e. CO2 emissions as shown in numerous previous works also by the authors. A NOX-CO2 trade-off for cumulative cycle emissions can be observed, which can be optimized by using more advance technologies on the engine and/or on the EATS side. In the present study a systematic investigation is carried out by means of model-based holistic approach targeting the definition of a high efficiency engine layout and optimal thermal management calibration. First, the potentials of combustion process optimization (compression ratio, peak firing pressure) and of turbocharger efficiency increase are quantified aiming engine efficiency increase. Afterwards, using holistic engine and EAT concept development approach, conventional and advanced EATS layouts are tested. The advanced EATS layout consist of a close-coupled dual-stage SCR system. In order to explore the benefits of each layouts, the engine heat-up calibrations are varied and the resulting, cumulative NOX-CO2 emissions of the investigated cycle are compared and evaluated. Multiple improvement measures for both engine and EAT system are discussed and an outlook of future powertrain concepts is given. © 2020 SAE International. All rights reserved.
scopus关键词	Carbon dioxide; Diesel engines; Economic and social effects; Efficiency; Fuels; Laws and legislation; Optimization; Powertrains; Temperature control; Concept development; Exhaust aftertreatment; Feasibility assessment; Heavy duty vehicles; High-efficiency engines; Improvement measure; Peak-firing pressures; Turbocharger efficiency; Greenhouse gases
来源期刊	SAE Technical Papers
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176808
作者单位	Iav GmbH
推荐引用方式 GB/T 7714	Kovacs D.,Mennig M.,Rezaei R.,et al. Holistic Engine and EAT Development of Low NOXand CO2Concepts for HD Diesel Engine Applications[J],2020(2020).
APA	Kovacs D.,Mennig M.,Rezaei R.,&Bertram C..(2020).Holistic Engine and EAT Development of Low NOXand CO2Concepts for HD Diesel Engine Applications.SAE Technical Papers(2020).
MLA	Kovacs D.,et al."Holistic Engine and EAT Development of Low NOXand CO2Concepts for HD Diesel Engine Applications".SAE Technical Papers .2020(2020).