Fundamental Advancements in Pre-Chamber Spark Ignition and Emissions Control for Natural Gas Engines [electronic resource]

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Tác giả:

Ngôn ngữ: eng

Ký hiệu phân loại: 621.43 Internal-combustion engines

Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Office of the Assistant Secretary of Energy Efficiency and Renewable Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2019

Mô tả vật lý: Size: 2.4 MB : , digital, PDF file.

Bộ sưu tập: Metadata

ID: 266300

 Argonne National Laboratory, the National Renewable Energy Laboratory, Oak Ridge National Laboratory, and Sandia National Laboratories collaborated on research to address barriers for natural gas engine efficiency. This research project focuses on early stage research focusing on pre-chamber spark-ignition (PCSI) to achieve diesel-like efficiency in medium- and heavy-duty natural gas engines by extending the lean dilution limit and/or exhaust gas recirculation (EGR) dilution limit, as well as shortening burn duration, with integrated aftertreatment. This project integrates experimental and simulation based tasks to address four key barriers to market penetration of PCSI for medium- and heavy-duty natural gas engines. These include Inadequate science base and simulation tools to describe/predict the fluid-mechanical and chemical-kinetic processes governing PCSI to enable engineers in industry to optimize designs for efficiency, noise, reliability, pollutant formation, emissions control integration, and drivability
  limited ability to extend EGR and/or lean dilution limits at higher loads
  increased propensity for PCSI hot-spot pre-ignition at high loads relative to spark ignition
  and ineffective methane catalysts for the high engine-out unburned fuel concentrations coupled with low exhaust temperatures (<
 <
 400 degrees C) of high efficiency engines.
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