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and triple generator systems
are becoming very popular.”
The TWD1663GE utilizes
Volvo’s SCR system that is used
on Volvo engines for off-road
applications as well as for Volvo
and Mack trucks. Volvo said the
system requires no downtime for
regeneration or decreased serv-
ice intervals compared with the
current Volvo engine program. It
does not increase the amount of
cooling capacity needed, resulting in a system that is easy to
install in limited space.
The TWD1663GE is based on the existing TWD1643GE
engine. The power output for standby power applications is up
to 625 k We. This output is applicable for generator manufacturers choosing to link multiple generator sets together to offer
1. 25, 1.875 and 2. 5 MW power blocks, the company said.
Volvo Penta TWD1663GE
Volvo Penta said its off-road engine range uses SCR
technology to comply with 2011 EPA Tier 4 interim emissions regulations. Volvo said its SCR system has the same
(or lower) cooling demand than currently — minimizing noise
levels and the cost of the radiator package. A smaller radiator
also allows OEMs the flexibility to accommodate the cooling
system in space-sensitive installations, Volvo said.
For 2011, Volvo Penta announced the appointment of
Engine Distributors Inc., Blackwood, N.J., as its industrial
engine distributor for Maryland, New Jersey, New York,
eastern Pennsylvania, Delaware and New England.
Volvo Trucks’ EPA 2010 solution with its No Regen SCR
technology and a diesel particulate filter is designed to
reduce emissions of NOx and PM to near-zero levels, but it
has also improved fuel efficiency by 5% or more over EPA
2007 engines, the company said.
For 2011, Volvo Trucks introduced powertrain enhancements to further improve fuel efficiency. The first
enhancement is the new 455 hp and 1750 lb.ft. torque rating for the Volvo D13 engine, complementing the existing
ratings of 405, 425, 475 and 500 hp. Volvo Trucks’ Eco-Torque and Dual-Torque ratings are designed to maximize
fuel economy by providing a driver-intuitive, easy-to-use
algorithm that rewards fuel-efficient driving and encourages
low-rpm engine operation.
Eco-Torque and Dual Torque ratings take advantage of
high torque rise engine curves that allow full torque down
to 1050 or 1000 rpm. These features take effect in the top
two gears, where drivers in line-haul operations spend as
much as 95% of their driving time, Volvo said.
Upon demand, engine torque will increase by 200 lb.ft.
— up to 300 lb.ft. in the case of the 425 hp engine — to
allow the vehicle to remain in top gear on most grades. Eco-Torque ratings allow full performance and fuel economy in
the remaining gears, while Dual-Torque ratings are available
to allow lower-rated transmissions to be used. Volvo Trucks
also features the Eco-Torque ratings on both its D11 and
Fuel savings can also be achieved through Volvo
Trucks’ new mass-based variable torque software, which
is designed to sense the gross combination weight of the
truck and adjusts the engine’s torque when the truck is
lightly loaded. The software’s adjustments improve overall
fuel efficiency while still delivering excellent performance
during all conditions, Volvo said.
Volvo Trucks North America
P.O. Box 26115
7900 National Service Rd.
Greensboro, NC 27402-6115
Phone: (336) 393-2000
Sales: Ron Huibers
Marketing: Magnus Koeck
Powertrain: Ed Saxman
Trucks: Frank Bio
Westport Innovations Inc.
101-1750 West 75th Ave.
Vancouver, BC, Canada V6P 6G2
Phone: (562) 256-9922, ext 229
Fax: (562) 256-9966
Sales: Kelly Mills
Diesel: 325 to 550 hp
Gaseous Fuel: 400 to 475 hp
continued on page 70
68 DIESEL PROGRESS NORTH AMERICAN EDITION June 2011