While on/off fan drives are usually preferred for their durability and fuel efficiency for over-the-road applications, BorgWarner's new DuroSpeed two-speed fan drive was developed for more severe service applications
Fuel efficiency—and the economic and ecological benefits associated with it—continues to be the white rabbit of the global aviation industry. While engine builders look toward composites and electrification, and airframe designers toward lightweighting and aerodynamics, engineers at NASA’s Glenn Research Center recently completed testing of a novel concept: the boundary layer ingesting propulsor.
To downsize or not to downsize engines? That’s the question facing all OEMs. In an initial move to be more environmentally responsible, for many downsizing seemed to be thoroughly sensible. But is it? Executives have their say.
After today’s emissions-driven revolution, Gian Maria Olivetti says that Federal-Mogul anticipates the off-highway engine market of the future to be more evolutionary in nature, with a focus on optimizing the cost of emissions control technologies and a greater emphasis placed on powertrain efficiency.
Developed in coordination with the Volvo Group, the D5 and D8 engines feature a newly designed platform with a larger displacement compared to previous versions. The new engines offer improved an engine block stiffness and higher torque at low speed.
The dedicated-EGR engine is so named because one of its four cylinders is dedicated exclusively to producing high levels of exhaust gas recirculation and hydrogen/CO reformate. PSA Citroen will put a D-EGR engine, co-developed with SwRI, into series production in 2018.
Bernd Krüper, head of the Construction & Agriculture business, and Frank Dräse, program manager for EU Stage V at MTU, talk about the world’s strictest off-highway emissions directive and the solutions being developed by MTU for the power range from 100 to 480 kW (134 to 643 hp).
In the exhaust systems arena, design innovations occurring within the last decade along with new analytical tools will help shape the way engineers design systems in the future, according to Tru-Flex's Scott Swank.
The technology-driven Aurora has been involved in numerous NASA programs since its founding in 1989, and as recently as October 24 announced that it had been awarded a contract to perform a comprehensive evaluation of NASA’s Single-aisle Turboelectric Aircraft with Aft Boundary Layer propulsion aircraft concept, and is also renowned for its work on the D8 and DARPA's XV-24A.