Engine Research and Development
Engine Research and Development
News Article | September 12, 2017
« Honda unveils Urban EV Concept, production version in 2019; electrified technology for every new model launched in Europe | Main | German government awards €4.1M to Fastned to build 25 fast charging stations » The US Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) intends to issue, on behalf of the Vehicle Technologies Office (VTO), a funding opportunity announcement (DE-FOA-0001813) entitled “FY 2017 Vehicle Technologies Office Medium/Heavy-Duty, On-Road Natural Gas Engine Research and Development Funding Opportunity Announcement”. VTO is seeking to address barriers to adoption of natural gas vehicles through early-stage research on medium- and heavy-duty on-road engine technologies. The goal is to enable natural gas engines that can cost-effectively achieve diesel-like efficiency while meeting current and future emissions standards. Through this notice, VTO is making interested parties aware of plans to release a funding opportunity announcement in the near-term. The programmatic goal is to enable natural gas engines that can cost-effectively achieve diesel-like efficiency while meeting current and future emissions standards. A complete engine development project is outside the scope of this effort, but engine subsystem research must have a plausible pathway to higher engine efficiency. Emission control technology projects addressing criteria pollutants and GHGs are desired, with consideration that future standards are likely to influence NGV technology adoption. Potential technologies include (but are not limited to) combustion strategies, engine subsystems, emission control systems, fuel systems, and controls. As the world’s leading natural gas producer, the United States could benefit from using low-cost natural gas as an alternative to other energy sources for transporting goods. Opportunities exist to improve performance, reliability, durability, cost effectiveness, and efficiency of natural gas vehicles through research and development. A public workshop on natural gas vehicles was held at the National Renewable Energy Laboratory on 25 July 2017 to identify early-stage research needs for natural gas engines, including topics in engine efficiency, emissions control and fuel and fuel systems. Industry feedback showed interest in low TRL level aspects of natural gas efficiency, as well as lubricant effects and advanced modeling; industry would like to see DOE continue building on expertise with liquid fuel engine systems. Both criteria air pollutants and GHG control are of interest for NG vehicles, research needs exist for addressing the unique NG challenges of methane conversion for all combustion strategies There are several low and medium TRL research topics related to NG fuels and fuel systems which can increase of MD/HD NG vehicles. These may not be directly related to FY17 goals of engine efficiency improvements but represent a critical piece of overall NGV efficiency.
Ravikrishna R.V.,Indian Institute of Science |
Pandey S.K.,Engine Research and Development |
Muralitharan N.,Engine Research and Development
Journal of Combustion | Year: 2011
A quasi-dimensional modelling study is conducted for the first time for a heavy duty, diesel-fuelled, multicylinder engine operating in HCCI mode. This quasidimensional approach involves a zero-dimensional single-zone homogeneous charge compression ignition (HCCI) combustion model along with a one-dimensional treatment of the intake and exhaust systems. A skeletal chemical kinetic scheme for n-heptane was used in the simulations. Exhaust gas recirculation (EGR) and compression ratio (CR) were the two parameters that were altered in order to deal with the challenges of combustion phasing control and operating load range extension. Results from the HCCI mode simulations show good potential when compared to conventional diesel performance with respect to important performance parameters such as peak firing pressure, specific fuel consumption, peak pressure rise, and combustion noise. This study shows that HCCI combustion mode can be employed at part load of 25 varying the EGR rates between 0 and 60. © 2011 Sunil Kumar Pandey et al.