SAE 2014 Commercial Vehicle Engineering Congress

Technical Session Schedule

Thursday, October 9

ComVEC High Efficiency Session - Oral Only Session
(Session Code: CVHE)

Room 40  ALL DAY

The need to identify and implement cost-effective technologies capable of delivering quantifiable improvements in vehicle efficiency is a top priority for the entire heavy duty vehicle continuum. Topics being invited include: IC Engine Technologies, Hybrids (both electric and hydraulic), Whole-Vehicle Technologies (electrification, cooling systems, low rolling resistance tires, aerodynamics, etc.) and Intelligent Transportation Systems.

Organizers - Long-Kung Hwang, Cummins Inc.; Darius Mehta, Southwest Research Institute; Craig Puetz, John Deere Product Engineering Center; David Smith, Robert M. Wagner, Oak Ridge National Laboratory

Time Paper No. Title
9:00 a.m. ORAL ONLY
Technology Recognition for the Next Phase Heavy-Duty Greenhouse Gas Emission and Fuel Efficiency Standards
Building upon the success of the first-ever U.S. regulatory program to reduce greenhouse gas emissions (GHG) and improve the fuel efficiency of medium- and heavy-duty vehicles, issued in 2011, the Environmental Protection Agency (EPA), the National Highway Traffic Safety Administration (NHTSA), and California Air Resource Board (CARB) are working together to develop the technical foundation for proposing the next phase of heavy-duty GHG and fuel efficiency standards. One of the options the Agencies are considering involves recognizing the efficiency of powertrain technologies within the context of a full vehicle standard. For this option it becomes critical to develop methods that assess the expected real world performance of those technologies, which include the engine, transmission, and axle technologies. In order to accomplish this goal, the agencies have developed and evaluated a number of experimental approaches to recognize the performance of these technologies. In parallel, the agencies have been evaluating potential enhancements to the Agencies’ full vehicle simulation software tool called GEM (Greenhouse Emission Model), which is used for heavy-duty vehicle certification today. With the enhancements being considered, GEM could potentially have the ability to recognize most of the advanced technologies related to the engine and vehicle that can be recognized through engine and chassis dynamometer tests today. The agencies are also evaluating potential test procedure enhancements to better recognize the performance of certain technologies that GEM might be unable to model. This presentation will provide the latest update on these technical efforts.
Houshun Zhang, EPA
9:30 a.m. ORAL ONLY
DOE SuperTruck Program Update
As part of its efforts to reduce the consumption of petroleum fuels at a national level, the US Department of Energy awarded several contracts to improve Class 8 truck freight hauling efficiency (ton-miles/gal) by greater than 50%. The class tuck segment was targeted because of the large amount of fuel consumed by these vehicles. To reach this aggressive target, all elements of the vehicle and power train were studied to determine the most customer centric elements to incorporate into the truck. A key enabler to meet the freight efficiency improvement was developing and integrating technology to improve diesel engine fuel energy conversion efficiency by 20% to achieve a brake thermal efficiency of 50%.
Wayne Eckerle, Cummins Inc.
10:00 a.m. ORAL ONLY
From Vision to Production: The Roles of R&D Consortia, Government , and Industry to meet the Efficiency and Emissions Goals of the Future
Charles E. Roberts, Southwest Research Institute
10:30 a.m.
10:30 am - 1:00 pm ~~ Break For Executive Panel Discussion & Lunch with Exhibits
1:00 p.m. ORAL ONLY
Path to a 50% Brake Thermal Efficiency Product
Commercial vehicles and off-road equipment provide functions that are key for sustainable economic growth. They are crucial for long haul movement of goods, they provide for services and infrastructure support, they are used for local delivery and people movement as well as to move soil, harvest bio-mass to provide food, and provide the power needed for construction, mining and other resource management efforts.

Owing to the significant amount of fuel consumed by the market segment, the US has implemented CO2 and Fuel Economy regulations for Commercial On-Highway engines and vehicles, driven by both environmental concerns and the desire for energy independence. Many other regions are also considering or developing analogous regulations. While improvements to their fuel efficiency are implemented, these engines must also comply with all criteria pollutant emission and be in balance with the business needs of the purchaser and operator.

This presentation provides an overview of some of the engine technologies being developed to improve the thermal efficiency beyond 50% and reduce the CO2 footprint of commercial engines. A systems approach is employed, including contributions from the engine, energy management and recovery, and emission control components.

Optimized interactions between the engine systems enabled through technology development will yield improvements in the fuel efficiency and CO2 footprint of future commercial vehicles while enabling sustainable growth.
Gary Hunter, AVL Powertrain Engineering Inc.
1:30 p.m. ORAL ONLY
Understanding Agricultural Tractor External Loads
Agricultural tractors power a wide variety implements and attachments for agricultural, industrial, commercial, municipal, and private customers. Common applications include: soil preparation; seeding; crop care; crop harvest; material handling; material processing; and material hauling. Power is commonly transmitted to the implements and attachments through mechanical, hydraulic, and electrical means. Manufacturers work hard to optimize performance, productivity, fluid economy and value in these varied and often complex applications. Due to the difficulty in creating repeatable in-field test conditions, a key enabler is the development of realistic customer duty cycles that provide a basis for lab and virtual models. This discussion presents examples of some “typical” duty cycles and discusses considerations in the development of additional duty cycles which may help manufacturers and others in the evaluation of agricultural tractor performance.
Brad Kuczmarski, John Deere Product Engineering Center
2:00 p.m. ORAL ONLY
Power-pack Testing of Heavy-Duty Vehicle Powertrains
Oak Ridge National Laboratory’s Vehicle Systems Integration powertrain test cell is designed to develop and test medium and heavy-duty vehicle hybrid powertrains by subjecting them to steady state and transient operating speeds and loads representative of real world driving conditions. This facility is currently supporting the development of heavy-duty emissions and fuel consumption test procedures. Three different types of power-packs (automated manual, automatic, and hybrid transmissions coupled to the same heavy-duty engine) are being subjected to an extensive matrix of tests and drive cycles using a powertrain-in-the-loop set-up. This presentation will compare engine-only results, power-pack results, as well as chassis dynamometer results to establish the advantages and disadvantages of each testing method.
Paul Chambon, Oak Ridge National Laboratory
2:30 p.m. ORAL ONLY
BraytonEnergy Presentation
Jim Kesseli, BraytonEnergy LLC
3:00 p.m. ORAL ONLY
Roots Expander Organic Rankine Cycle Exhaust Energy Recovery System for Heavy Duty Diesel Engines
For most Heavy Duty (HD) diesel engines over 50% of total fuel energy is lost to the ambient as heat (exhaust and coolant). Eaton Roots (Supercharger) technology has been used as expander (Roots Expander to demonstrate an efficient Organic Rankine Cycle (ORC) Waste Heat Recovery (WHR) system for a HD diesel engine. The present work includes a baseline engine characterization to identify and quantify the potential waste energy sources and correlate the thermodynamic models. Thermodynamic models were used to assess the merits of various WHR layouts and WHR components on system performance. An average of 6% fuel economy improvement has been predicted for Eaton Supercharger based expander in an ORC WHR system with ethanol as a working fluid for HD diesel engines
Matthew J. Fortini
3:30 p.m. ORAL ONLY
Q&A High Efficiency Panel Session