SAE 2014 High Efficiency IC Engine Symposium

Technical Session Schedule

Monday, April 7

High Efficiency Combustion
(Session Code: HEE2)

Room Woodward B, C, & D  ALL DAY

Time Paper No. Title
7:55 a.m. ORAL ONLY
High Efficiency Combustion Moderator
Moderators - Paul Richards
Paul Richards, Innospec (ret.)
8:00 a.m. ORAL ONLY
Efficiency and Emissions Comparison of Single and Dual-Fuel Lo Temp Combo on a Light Duty Multi-Cylinder Diesel Engine
Scott Curran, Oak Ridge National Laboratory
8:40 a.m. ORAL ONLY
HD 51.5% Efficiency
Wayne Eckerle, Cummins Inc.
9:20 a.m.
BREAK
10:00 a.m. ORAL ONLY
Study on Homogeneous Lean Charge SI Ignition Combustion
Most of manufacturers vigorously are studying new combustion technologies in order to attain the new and more stringent fuel efficiency and emissions regulations. Recently, lean burn technology has been attracted again. This talk will begin by looking back at the former lean burn technology. Then homogeneous Lean charge SI (HLSI) which is studying at Honda R&D Co., Ltd. to triumph over the many problems of former lean burn technologies will be described
Takashi Kondo, Honda
10:40 a.m. ORAL ONLY
Development of a 1.8L Gasoline Direct Injection Compression Ignition (GDCI) Engine
Gasoline Direct Injection Compression Ignition (GDCI) has demonstrated good potential for high fuel efficiency, low NOx, and low PM over the speed-load range using RON91 gasoline. In the current work, a four-cylinder, 1.8L engine was designed and built. The engine features a pent roof combustion chamber, central-mounted injector, 15:1 compression ratio, and zero swirl and squish. The fuel injection, valvetrain, and boost systems were key technology enablers. Steady state engine dynamometer tests were conducted with partially premixed compression ignition without mode switching or diffusion controlled combustion. Preliminary test results showed that targets for NOx, PM, and combustion noise and stability could be achieved. Brake specific fuel consumption was similar to published data for light duty diesel engines. Preliminary transient tests demonstrated potential for very good control. More work is needed to calibrate the engine over the full operating map and to further develop the engine control system.
Mark C. Sellnau, Delphi Corp.
11:20 a.m. ORAL ONLY
Advances in Opposed-Piston, Two-Stroke Engine Performance and Emissions
New and more stringent fuel efficiency and emissions regulations have prompted manufacturers to evaluate alternative engine technologies. These technologies include the opposed-piston, two-stroke engine that, since the 1970s, has been reserved for maritime and stationary power applications due to poor emissions and oil control. However, recent advancements made by Achates Power demonstrate that the opposed-piston engine has advantages over conventional, four-stroke diesels—making it extremely well suited for today’s passenger vehicles and commercial trucks.
Fabien Redon, Achates Power Inc.
12:00 p.m. ORAL ONLY
LUNCH
12:55 p.m. ORAL ONLY
High Efficiency Combustion Moderator
Moderators - Bengt Johansson, Lund University
Bengt Johansson, Lund University
1:00 p.m. ORAL ONLY
Knock & Megaknock: The Ultimate Barrier to Spark Ignition Engines Downsizing?
Although nowadays downsizing associated with turbocharging represents one of the most valuable options to reduce the CO2 emissions of automotive Spark Ignition (SI) engines, the search for continuously increasing boost levels has led to a dramatic increase of the knock likelihood, requiring quite often spark timing retards, mixture enrichment and/or compression ratio reductions which can jeopardize the expected CO2 emissions benefits.
Federico Millo, Politecnico di Torino
1:40 p.m. ORAL ONLY
The Increasing Importance of Fuel Octane Rating
Fuel octane rating is an increasingly critical constraint on engine efficiency, but its importance is not widely understood. This talk will begin by reviewing the basics of engine knock and fuel octane rating. Then quantitative examples will be used to illustrate why high-octane fuels are so important for modern engines.
Thomas G. Leone, Ford Powertrain Research Lab.
2:20 p.m.
BREAK
2:50 p.m. ORAL ONLY
VEA - Volvo Engine Architecture: 4-cylinder Diesel and Gasoline Engines with High Specific Performance and Low Fuel Consumption.
The new engine family from Volvo Car Corporation shows a unique commonality between spark-ignited and compression ignited engines. Its main characteristics are high specific performance and low fuel consumption caused by extreme downsizing, DI technology and low friction. The future of Volvos’ engine line up allows a maximum of 4 cylinders, replacing the existing 5 and 6 cylinder engines, hence lowering fleet fuel consumption.
Lucien Clemens Koopmans, Volvo Car Corporation
3:30 p.m. ORAL ONLY
Ionic Liquid-Additized Engine Oil for Improved Fuel Efficiency
Here we summarize our progress on the development of oil-soluble ionic liquids (ILs) as next-generation oil additives for engine lubrication. Candidate ILs possess high thermal stability, non-corrosiveness, excellent wettability, and most importantly effective anti-scuffing/anti-wear and friction reduction characteristics. Mechanistic analysis attributes the superior lubricating performance of IL additives to their physical and chemical interactions with metallic surfaces. The ORNL-GM-Lubrizol team has recently developed a prototype low-viscosity engine oil using a phosphonium-phosphate IL at 1 wt.% treat rate as the anti-wear additive. Tribological bench tests of the IL-additized oil showed 20% lower friction in mixed and elastohydrodynamic lubrication and 38% lower wear in boundary lubrication when compared with the commercial Mobil 1 5W-30 engine oil. High-temperature, high load (HTHL) full-size engine tests showed excellent anti-wear performance for the prototype oil in both fresh and aged conditions. Sequence VID engine dynamometer tests demonstrated an improved fuel economy by >2% for this IL-additized engine oil benchmarked against the Mobil 1 5W-30 oil. In addition, accelerated catalyst aging tests suggest that the IL additive may potentially have less adverse impact on three-way catalysts compared to the conventional ZDDP.
Jun Qu, Oak Ridge National Laboratory
4:10 p.m. ORAL ONLY
Model-Based Control, Calibration and Optimization of High Efficiency Engines
Future high efficiency engines will adopt new air, fuel, exhaust, combustion and emissions management systems, advanced combustion regimes, novel engine architectures, hybridization and waste energy recovery. This increase in engine complexity will require the integration of an expanding number of additional mechanical and electronic subsystems, actuators and sensors.
Christopher Atkinson, Atkinson LLC