Better Roads Digital Magazine
Issue link: https://read.dmtmag.com/i/85919
Intermat overview | continued uses a combination diesel oxidation catalyst/SCR module. The 1206F has two turbos – one small, one large – mounted in a series. The smaller, first stage turbo accelerates quickly to give rapid low speed response; the larger second stage turbo provides high air- flow required for power density. The engine's DOC/diesel particulate filter canister and SCR system are in one integrated module. Driving additional fuel savings Two exhibitors showcased drivetrain developments they say have the potential for significant fuel savings. The Dana Rexroth HVT R3 hydro- mechanical variable transmission, currently undergoing field testing, will offer drivetrain fuel savings of up to 20 percent when "compared with the same vehicle outfitted with conventional torque converter trans- missions," Dana says. Designed for front-end loaders, graders and other off-highway applications of up to 360 horsepower, the transmission is the first powersplit system from the 50-50 joint venture between Dana and Bosch Rexroth. At low vehicle speeds, only the hydrostatic circuit of the HVT is used, allowing quick acceleration and braking, low-speed maneuvering and reverse without the need of an additional clutch. At higher speeds, the HVT still uses the hydrostatic path, but a power splitter begins to route engine power through a parallel path that also uses the me- chanical elements, allowing accelera- tion with no interruption in tractive force. Both paths are managed by an electrical control unit. Engine speed is decoupled from drive speed and maintenance costs decrease with the use of hydrostatic breaking. The 427 (pictured) and 437 loaders replace JCB's 426 and 436 models, and are scheduled to go into production this fall. Powered by a 6.7-liter Cummins QSB engine, the models have automatic front axle diff locks and an optional 5-speed power shift box. Shorts Acquisition of the Dressta dozer line gives LiuGong a parts depot in the Chicago area the company will use for all U.S. distributed products, says David Beaten- bough, LiuGong's vice president of research and development. The company currently has around 17 North American dealers. Beatenbough says he's "extremely happy" with the first days of the acquisition from Poland's HSW. LiuGong is currently working out the lineup of Dressta and LiuGong dealers. North America is a key market for the Dressta dozers, where eight models ranging from 74 to 515 horsepower are sold, Beaten- bough says. 39c June 2012 Better Roads