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Title: High-Performance Computing and Analysis-Led Development of High Efficiency Dilute Opposed Piston Gasoline Engine

Abstract

Pinnacle is developing a multicylinder 1.2 L gasoline engine for automotive applications using high-performance computing (HPC) and analysis methods. Pinnacle and Oak Ridge National Laboratory executed large-scale multidimensional combustion analyses at the Oak Ridge Leadership Computing Facility to thoroughly explore the design space. These HPC-led investigations show high fuel efficiency (~46% gross indicated efficiency) may be achieved by operating with extremely high charge dilution levels of exhaust gas recirculation (EGR) at a light load key drive cycle condition (2000 RPM, 3 bar brake mean effective pressure (BMEP)), while simultaneously attaining high levels of fuel conversion efficiency and low NO x emissions. In this extremely dilute environment, the flame propagation event is supported by turbulence and bulk in-cylinder charge motion brought about by modulation of inlet port flow. This arrangement produces a load and speed adjustable amalgamation of swirl and counter-rotating tumble which provides the turbulence required to support stable low-temperature combustion. At higher load conditions, the engine may operate at more traditional combustion modes to generate competitive power. In this work, the numerical results from these HPC simulations are presented. Finally, further HPC simulations and test validations are underway and will be reported in future publications.

Authors:
 [1];  [1];  [1];  [2];  [2]
  1. Pinnacle Engines, Inc., San Carlos, CA (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1468207
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Journal of Engineering for Gas Turbines and Power
Additional Journal Information:
Journal Volume: 140; Journal Issue: 10; Journal ID: ISSN 0742-4795
Publisher:
ASME
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; engines; simulation; design; cylinders; flames; pistons; flow (dynamics); combustion; exhaust gas recirculation; fuel efficiency

Citation Formats

Banerjee, Siddhartha, Naber, Clayton, Willcox, Michael, Finney, Charles E. A., and Edwards, Dean K. High-Performance Computing and Analysis-Led Development of High Efficiency Dilute Opposed Piston Gasoline Engine. United States: N. p., 2018. Web. doi:10.1115/1.4039845.
Banerjee, Siddhartha, Naber, Clayton, Willcox, Michael, Finney, Charles E. A., & Edwards, Dean K. High-Performance Computing and Analysis-Led Development of High Efficiency Dilute Opposed Piston Gasoline Engine. United States. doi:10.1115/1.4039845.
Banerjee, Siddhartha, Naber, Clayton, Willcox, Michael, Finney, Charles E. A., and Edwards, Dean K. Tue . "High-Performance Computing and Analysis-Led Development of High Efficiency Dilute Opposed Piston Gasoline Engine". United States. doi:10.1115/1.4039845.
@article{osti_1468207,
title = {High-Performance Computing and Analysis-Led Development of High Efficiency Dilute Opposed Piston Gasoline Engine},
author = {Banerjee, Siddhartha and Naber, Clayton and Willcox, Michael and Finney, Charles E. A. and Edwards, Dean K.},
abstractNote = {Pinnacle is developing a multicylinder 1.2 L gasoline engine for automotive applications using high-performance computing (HPC) and analysis methods. Pinnacle and Oak Ridge National Laboratory executed large-scale multidimensional combustion analyses at the Oak Ridge Leadership Computing Facility to thoroughly explore the design space. These HPC-led investigations show high fuel efficiency (~46% gross indicated efficiency) may be achieved by operating with extremely high charge dilution levels of exhaust gas recirculation (EGR) at a light load key drive cycle condition (2000 RPM, 3 bar brake mean effective pressure (BMEP)), while simultaneously attaining high levels of fuel conversion efficiency and low NOx emissions. In this extremely dilute environment, the flame propagation event is supported by turbulence and bulk in-cylinder charge motion brought about by modulation of inlet port flow. This arrangement produces a load and speed adjustable amalgamation of swirl and counter-rotating tumble which provides the turbulence required to support stable low-temperature combustion. At higher load conditions, the engine may operate at more traditional combustion modes to generate competitive power. In this work, the numerical results from these HPC simulations are presented. Finally, further HPC simulations and test validations are underway and will be reported in future publications.},
doi = {10.1115/1.4039845},
journal = {Journal of Engineering for Gas Turbines and Power},
issn = {0742-4795},
number = 10,
volume = 140,
place = {United States},
year = {2018},
month = {6}
}

Works referenced in this record:

Applying Detailed Kinetics to Realistic Engine Simulation: the Surrogate Blend Optimizer and Mechanism Reduction Strategies
journal, April 2010

  • Naik, Chitralkumar V.; Puduppakkam, Karthik; Wang, Cheng
  • SAE International Journal of Engines, Vol. 3, Issue 1
  • DOI: 10.4271/2010-01-0541

Advanced Design of Variable Compression Ratio Engine with Dual Piston Mechanism
journal, April 2009

  • Ishikawa, S.; Kadota, M.; Yoshida, K.
  • SAE International Journal of Engines, Vol. 2, Issue 1
  • DOI: 10.4271/2009-01-1046