Search Menu
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information
Search Scholarly Publications

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

Journal Article · · Journal of Engineering for Gas Turbines and Power
DOI: https://doi.org/10.1115/1.4039845 · OSTI ID:1468207
 [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)
+ Show Author Affiliations

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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1468207
Journal Information:
Journal of Engineering for Gas Turbines and Power, Journal Name: Journal of Engineering for Gas Turbines and Power Journal Issue: 10 Vol. 140; ISSN 0742-4795
Publisher:
ASMECopyright Statement
Country of Publication:
United States
Language:
English

References (8)

Application of High Performance Computing for Simulating the Unstable Dynamics of Dilute Spark-Ignited Combustion book December 2013
Intake Flow Simulation and Comparison with PTV Measurements conference March 1999
A Spray/Wall Interaction Submodel for the KIVA-3 Wall Film Model conference March 2000
Advanced Design of Variable Compression Ratio Engine with Dual Piston Mechanism journal April 2009
Applying Detailed Kinetics to Realistic Engine Simulation: the Surrogate Blend Optimizer and Mechanism Reduction Strategies journal April 2010
Investigations on the Potential of a Variable Miller Cycle for SI Knock Control conference April 2013
The Interaction between Fuel Anti-Knock Index and Reformation Ratio in an Engine Equipped with Dedicated EGR journal April 2016
Mechanism of Soot and NOx Emission Reduction Using Multiple-injection in a Diesel Engine conference February 1996

Cited By (1)

Impact of methane energy fraction on emissions, performance and cyclic variability in low-load dual fuel combustion at early injection timings journal December 2019

Similar Records

Related Subjects

42 ENGINEERING
combustion
cylinders
design
engines
exhaust gas recirculation
flames
flow (dynamics)
fuel efficiency
pistons
simulation